Air conditioning ventilation system

Abstract

To provide an air conditioning ventilation system capable of preventing deterioration due to dew condensation of a duct and a heat exchange element and preventing mold within a bathroom while recovering heat input to the bathroom and capable of attaining an energy saving comfortable life with clean air through a flow of air conditioning air and ventilation air to an entire house.SOLUTION: Air supply sections 20, 21 and air discharge sections 40, 41 are provided in a bathroom 6 and a room A in a building 1, and an air recirculation passage from the air discharge sections 40, 41 to an air conditioning unit 15 is provided. An air blowing section 18 and an air conditioning section 17 are provided within the air conditioning unit 15. Air conditioning air with a smaller temperature difference than that between a temperature of blowout air of the air conditioning section 17 and a temperature of the room A is produced by the air conditioning unit 15, and is sent to the air supply sections 20, 21. A ventilation air supply section 85 and ventilation air discharge sections 60, 61 are provided in the bathroom 6 and other rooms. By using a heat exchange ventilation unit 50, air in the bathroom 6 and other rooms and outdoor air exchange heat with each other and are discharged to an outdoor side, and outdoor air that has undergone heat exchange is introduced into the building 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an air conditioning and ventilation system that conditions a plurality of rooms in a building using an air conditioning unit and an air blowing unit and ventilates the rooms using a heat exchange ventilation unit. [Background technology]

[0002] Homes are becoming increasingly airtight and insulated to save energy and make life more comfortable. At the same time, ventilation is becoming increasingly important to ensure clean air and healthy living. Conventionally, this type of air conditioning and ventilation system has been known to have an air conditioning room inside the building, with the air drawn into this room adjusted to a certain temperature by an air conditioner, and then blown to a number of rooms by multiple blower units to condition the air, and also to have a utility room where equipment such as washing machines, dryers, and irons are installed together, or to have ventilation air from under the floor exchanged with outside air in a heat exchange unit before being exhausted (see, for example, Patent Document 1). Another known heat recovery ventilation system is one in which a bathroom heater / dryer installed in the bathroom is passed through a branch box and then exhausted after exchanging heat with outside air in a sensible heat exchange ventilation unit (see, for example, Patent Document 2). Also known as a heat exchange ventilation system is one in which a bathroom exhaust duct, through which air passes in the bathroom, is connected to an exhaust passage on the downwind side of a total heat exchanger (see, for example, Patent Document 3). Also, a ventilation and air conditioning system is known that controls a ventilation device and an air conditioner that have a heat exchange ventilation mode and a normal ventilation mode by calculating indoor enthalpy and outdoor enthalpy from indoor temperature, humidity, outdoor temperature, and humidity (for example, Patent Document 4). Furthermore, an air conditioning ventilation system is known in which ventilation air from a bathroom or toilet is heat exchanged with outside air in a heat exchanger, and then discharged to the air intake side of the outdoor unit of an air conditioner (for example, Patent Document 5). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5094894 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-168503 [Patent Document 3] Patent No. 3959182 [Patent Document 4] Patent No. 6156245 [Patent Document 5] Japanese Patent Application Laid-Open No. 2006-112684 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the air conditioning and ventilation system described in Patent Document 1, when ventilation air from the bathroom is passed through a duct and introduced into a heat exchange unit to recover heat from the bathroom air, there is a problem that when taking a bath in winter, the high temperature and humidity of the air causes condensation on the duct and the total heat exchange element, deteriorating performance and shortening the lifespan. In addition, the sensible heat exchange element of the heat recovery ventilation system described in Patent Document 2 also has the same shortened lifespan due to condensation, and requires the connection to a drain hose or drain outlet to drain the condensed water. Furthermore, the sensible heat exchange element has the problem of being inferior in heat exchange efficiency to the total heat exchange element. Furthermore, in the heat exchange ventilation system described in Patent Document 3, ventilation air from the bathroom passes downstream of the heat exchange element, so condensation does not occur, but there is a problem in that heat cannot be recovered. Furthermore, the ventilation air-conditioning system described in Patent Document 4 performs control to approach a comfortable indoor target enthalpy with less energy, so the problem of condensation on the total heat exchanger elements remains unresolved. Furthermore, in the air conditioning ventilation system described in Patent Document 5, ventilation air from the bathroom is passed through the heat exchange element of the heat exchange device, which causes problems due to condensation.

[0005] The present invention aims to solve these conventional problems by providing an air conditioning and ventilation system that recovers heat input into the bathroom, prevents deterioration due to condensation on the duct and heat exchange element, prevents mold in the bathroom, and provides an energy-saving, comfortable, and clean-air lifestyle through the flow of conditioned air and ventilation air throughout the house. [Means for solving the problem]

[0006] In order to achieve the above object, the air conditioning and ventilation system of the present invention comprises an air supply section and an exhaust section in room A of a building, a bathroom air supply section in the bathroom, conditioned air is blown from the air supply section and the bathroom air supply section to room A and the bathroom, a return air path is provided for returning a portion of the conditioned air from the exhaust section of room A to a return section, a blower section and an air conditioning section are provided in the return section, the air supply section and the blower section are connected, and the blower section and the air conditioning section create conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning section and the temperature of room A, and blow the conditioned air to the air supply section and the bathroom air supply section, A ventilation air intake section and a ventilation exhaust section are provided in the bathroom and room B, the return air duct and the ventilation air intake section are connected, and the ventilation exhaust section is connected to a heat exchange air unit. The heat exchange air unit causes the remaining conditioned air to flow from the ventilation air intake section into the bathroom and room B, draws in air C from the bathroom through the ventilation exhaust section of the bathroom, draws in air D from room B through the ventilation exhaust section of room B, exchanges heat between the air C from the bathroom and the air D from room B and discharges them to the outside, and introduces the heat-exchanged outdoor air into the return air duct or the return section. With this system, fresh outdoor air and conditioned air return from the heat exchange ventilation unit are converted into fresh conditioned air in the return section by the air conditioning unit and the blower unit, with a temperature difference smaller than the temperature difference between the air conditioning unit's outlet air and the room temperature, and then sent to the bathroom and room for conditioning. After bathing, the conditioned air and bathroom air mix in the bathroom, lowering the relative humidity. The bathroom air is then exhausted by the heat exchange ventilation unit, quickly lowering the absolute humidity in the bathroom. The bathroom air with its reduced relative humidity flows into the heat exchange ventilation unit, exchanges heat with the outdoor air, and is then exhausted outside, recovering heat during bathing, reducing condensation on the heat exchange element, preventing its lifespan, and preventing mold growth in the bathroom. This results in an air conditioning and ventilation system that is energy-efficient, provides comfortable, and clean air. In addition, because conditioned air is blown directly into the bathroom, the bathroom dries faster after a bath, and clothes can be dried by hanging them in the bathroom. Heat can also be recovered during bathroom air conditioning, bathroom drying, and clothes drying. Therefore, by recovering the heat from the conditioned air supplied to the bathroom throughout the year, further energy savings can be achieved.

[0007] Another means is to provide a ventilation fan in the ventilation exhaust section of the bathroom. By this means, the ventilation air volume in the bathroom can be varied, so that the ventilation air volume can be increased when drying the bathroom or clothes, and these effects can be exhibited earlier, and the ventilation air volume can be minimized when taking a bath, reducing the feeling of cold air. Another means is to provide an air intake section and an exhaust section in room A of the building, provide a bathroom air intake section in the bathroom, send conditioned air from the air intake section and the bathroom air intake section to room A and the bathroom, provide a return air path that returns a portion of the conditioned air from the exhaust section of room A to a return section, provide a blower section and an air conditioning section in the return section, connect the air intake section and the bathroom air intake section to the blower section, create conditioned air with a temperature difference that is smaller than the temperature difference between the temperature of the air blown out from the air conditioning section and the temperature of room A, and blow the conditioned air to the air intake section and the bathroom air intake section, provide a ventilation air intake section and a ventilation exhaust section in the bathroom and room B, and connect the return air path to the ventilation air intake section. The ventilation and exhaust section, the confluence chamber, and the heat exchange air unit are connected, and the heat exchange air unit causes the remainder of the conditioned air to flow from the ventilation and exhaust section into the bathroom and room B, and air C from the bathroom is drawn in from the ventilation and exhaust section of the bathroom, and air D from room B is drawn in from the ventilation and exhaust section of room B, and the confluence chamber combines the air D from the ventilation and exhaust section of room B with the air C from the ventilation and exhaust section of the bathroom to form combined air, and the heat exchange air unit exchanges heat with the combined air and then discharges it to the outside, and the outdoor air that has exchanged heat with the combined air is introduced into the return air duct or the return section. This method allows the mixture of conditioned air and bathroom air to merge with air from other rooms, such as toilets and washrooms, in a merging chamber with a larger internal volume than a normal branch duct. As a result, the ratio of odor and humidity to the merged air is further reduced, reducing the possibility of condensation in the duct leading to the heat exchange unit after the merger. This further reduces condensation on the heat exchange element, preventing its lifespan and preventing mold in the bathroom. This results in an air conditioning and ventilation system that is energy-efficient, provides comfortable, and clean air. In addition, since conditioned air is blown directly into the bathroom, the bathroom dries faster after bathing, and clothes can also be dried by hanging them out to dry in the bathroom. Furthermore, if another room is used as a washroom connected to the bathroom by a door, when the bathroom door is opened after bathing and moisture from the bath leaks into the washroom, the bathroom and washroom can be ventilated as one, allowing the moisture to be quickly expelled and preventing mold from growing in the washroom. Furthermore, since the exhaust duct connects the ventilation and exhaust section to the washroom, which is the room next to the bathroom, it is significantly shorter than the exhaust duct to the heat exchange ventilation unit, and there is no need to run a long exhaust duct, which improves workability.

[0008] Another means is to provide a ventilation fan in the ventilation exhaust section or the merging chamber of the bathroom. By this means, the ventilation air volume of the bathroom or the ventilation air volume of the bathroom and other rooms can be varied, so that the air volume can be increased when drying the bathroom or clothes, thereby speeding up the drying, and the ventilation air volume can be minimized when taking a bath, reducing the feeling of cold air. Another means is to integrate the confluence chamber so that it is in contact with the ventilation exhaust part of the bathroom on the ceiling of the bathroom. This method allows the bathroom ventilation exhaust section to be directly connected to the junction chamber without using a duct, making installation easy. It also allows stable ventilation of the bathroom, sanitary area, storage room, or kitchen, regardless of duct resistance, and allows maintenance from under the bathroom ceiling. Another means is to provide a ventilation fan, a heating unit for heating and circulating the air C in the bathroom, and a circulation fan in the confluence chamber. This means allows heated air to circulate in the bathroom, which can expedite the effects of drying the bathroom or clothes, and minimizes the amount of ventilation air when taking a bath, reducing the feeling of cold air. It can also recover heat from the heated circulating air in the bathroom.

[0009] Another means is to provide an air supply section and an exhaust section in room A of the building, provide a bathroom air supply section in the bathroom, send conditioned air from the air supply section and the bathroom air supply section to room A and the bathroom, provide a return air path that returns a portion of the conditioned air from the exhaust section of room A to a return section, provide a blower section and an air conditioning section in the return section, connect the air supply section and the bathroom air supply section to the blower section, create conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning section and the temperature of room A by the blower section and the air conditioning section, and send the conditioned air to the air supply section and the bathroom air supply section, and provide an openable / closable outdoor opening in the bathroom. An adjacent room opening that can be used for ventilation is provided, and by blowing the conditioned air into the bathroom, air C in the bathroom is discharged at least from either the outdoor opening or the adjacent room opening to at least one of the outside room or the adjacent room; a ventilation air supply section and a ventilation exhaust section are provided in room B which includes the adjacent room to the bathroom; the return air duct and the ventilation air supply section are connected, and the ventilation exhaust section is connected to a heat exchange air unit; the heat exchange air unit draws air D from room B through the ventilation exhaust section of room B, exchanges heat with the air D from room B, and then discharges it to the outside, and the outdoor air after heat exchange is introduced into the return air duct or the return section. With this means, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom, fresh outdoor air from the heat exchange ventilation unit and the return air of the conditioned air are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the room temperature by the air conditioning section and the blower section in the air conditioning unit which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown into the bathroom, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity. By closing the bathroom's outdoor opening and opening the adjacent room, the mixed air from the bathroom flows into the adjacent washroom, where it flows into the heat exchange unit through the washroom's ventilation and exhaust section, exchanges heat with outdoor air, and is then discharged outside, recovering heat during bathing and quickly lowering the absolute humidity in the bathroom. Because the mixed air from the bathroom with a reduced relative humidity passes through the duct and heat exchange element, condensation on the duct and heat exchange element is reduced, preventing a shortened lifespan of the heat exchange element and preventing mold in the bathroom. After bathing, in summer, rainy season, etc., if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, the outdoor opening can be opened and the opening of the adjacent room closed, so that the mixed air from the bathroom is exhausted to the outside, which quickly reduces the absolute humidity in the bathroom, prevents mold from growing in the bathroom, and allows the outdoor air to be supplied at a comfortable temperature and humidity after heat exchange. This provides an air conditioning and ventilation system that is energy-efficient, comfortable, and provides clean air. In addition, because conditioned air is blown directly into the bathroom, the bathroom dries faster after a bath, and clothes can be dried by hanging them in the bathroom. Heat can also be recovered during bathroom air conditioning, bathroom drying, and clothes drying. Therefore, by recovering the heat from the conditioned air supplied to the bathroom almost all year round, further energy savings can be achieved.

[0010] Another means is to provide an air supply section and an exhaust section in room A of the building, provide a bathroom air supply section in the bathroom, send conditioned air from the air supply section and the bathroom air supply section to room A and the bathroom, provide a return air path that returns a portion of the conditioned air from the exhaust section of room A to a return section, provide a blower section and an air conditioning section in the return section, connect the air supply section and the bathroom air supply section to the blower section, create conditioned air with a temperature difference that is smaller than the temperature difference between the temperature of the air blown out by the air conditioning section and the temperature of room A, and blow the conditioned air to the air supply section and the bathroom air supply section, provide a ventilation fan and an opening for an adjacent room that can be opened and closed in the bathroom, The system can selectively discharge bathroom air C outside the room using the ventilation fan, or discharge the bathroom air C into the adjacent room through the adjacent room opening by blowing the conditioned air into the bathroom. A ventilation air supply section and a ventilation exhaust section are provided in room B, which includes the adjacent room to the bathroom, and the return air duct and the ventilation air supply section are connected, and the ventilation exhaust section is connected to a heat exchange air unit. The heat exchange air unit draws in air D from room B through the ventilation exhaust section of room B, exchanges heat with the air D from room B, and then discharges it outside, and the outdoor air after heat exchange is introduced into the return air duct or the return section. With this means, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom, fresh outdoor air from the heat exchange ventilation unit and the return air of the conditioned air are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the room temperature by the air conditioning section and the blower section in the air conditioning unit which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown into the bathroom, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity. By opening the adjacent room opening, the mixed air from the bathroom can flow into the adjacent washroom, where it flows through the washroom's ventilation and exhaust section into the heat exchange unit, where it exchanges heat with outdoor air and is then discharged outdoors, recovering heat during bathing and quickly lowering the absolute humidity in the bathroom. Because the mixed air from the bathroom with a reduced relative humidity passes through the duct and heat exchange element, condensation on the duct and heat exchange element is reduced, preventing a shortened lifespan of the heat exchange element and preventing mold in the bathroom. After bathing, in summer or the rainy season, if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, the ventilation fan is operated and the opening to the adjacent room is closed, so that the mixed air in the bathroom is quickly exhausted outside, quickly reducing the absolute humidity in the bathroom, preventing mold in the bathroom, and supplying outdoor air at a comfortable temperature and humidity after heat exchange. This provides an air conditioning and ventilation system that is energy-efficient, comfortable, and provides clean air. In addition, because conditioned air is blown directly into the bathroom, the bathroom dries faster after a bath, and clothes can be dried by hanging them in the bathroom. Heat can also be recovered during bathroom air conditioning, bathroom drying, and clothes drying. Therefore, by recovering the heat from the conditioned air supplied to the bathroom almost all year round, further energy savings can be achieved.

[0011] Another means is to provide an air intake section and an exhaust section in room A of the building, provide a bathroom air intake section in the bathroom, send conditioned air from the air intake section and the bathroom air intake section to room A and the bathroom, provide a return air path that returns part of the conditioned air from the exhaust section of room A to a return section, provide a blower section and an air conditioning section in the return section, connect the air intake section and the bathroom air intake section to the blower section, create conditioned air with a temperature difference that is smaller than the temperature difference between the temperature of the air blown out from the air conditioning section and the temperature of room A using the blower section and the air conditioning section, and send it to the air intake section and the bathroom air intake section, provide an openable outdoor opening and a bathroom ventilation exhaust section in the bathroom, and provide a ventilation air intake section and a ventilation exhaust section in room B. The system is characterized in that it has a section that connects the return air duct and the ventilation air supply section, and connects the bathroom ventilation exhaust section and the ventilation exhaust section to a heat exchange air unit, and is capable of selectively discharging the bathroom air C from the outdoor opening to the outside by blowing the conditioned air into the bathroom, or sucking the bathroom air C from the bathroom ventilation exhaust section using the heat exchange air unit, and sucking in air D from at least room B from the ventilation exhaust section of room B, exchanging heat with at least room B air D before discharging it to the outside, and introducing the outdoor air after heat exchange into the return air duct or the return section. With this means, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom, fresh outdoor air from the heat exchange ventilation unit and the return air of the conditioned air are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the room temperature by the air conditioning section and the blower section in the air conditioning unit which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown into the bathroom, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity. By operating the heat exchange ventilation unit and closing the bathroom's outdoor opening, the mixed air in the bathroom quickly flows into the heat exchange ventilation unit, where it exchanges heat with the outdoor air and is then discharged outside, quickly lowering the absolute humidity in the bathroom while recovering heat during bathing.The mixed air in the bathroom with its reduced relative humidity flows directly into the bathroom's ventilation exhaust section and passes through the duct and heat exchange element, reducing condensation in adjacent rooms, the duct, and the heat exchange element, preventing a shortened lifespan of the heat exchange element and preventing mold in the bathroom. After bathing, in summer, rainy season, etc., if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, the heat exchange ventilation unit is stopped and the outdoor opening is opened to exhaust the mixed air from the bathroom to the outside, which quickly reduces the absolute humidity in the bathroom and prevents mold from growing in the bathroom. This provides an air conditioning and ventilation system that is energy-efficient, comfortable, and provides clean air. In addition, because conditioned air is blown directly into the bathroom, the bathroom dries faster after a bath, and clothes can be dried by hanging them in the bathroom. Heat can also be recovered during bathroom air conditioning, bathroom drying, and clothes drying. Therefore, by recovering the heat from the conditioned air supplied to the bathroom almost all year round, further energy savings can be achieved.

[0012] Another means is to provide an air intake section and an exhaust section in room A of the building, provide a bathroom air intake section in the bathroom, send conditioned air from the air intake section and the bathroom air intake section to room A and the bathroom, provide a return air path that returns a portion of the conditioned air from the exhaust section of room A to a return section, provide a blower section and an air conditioning section in the return section, connect the air intake section and the bathroom air intake section to the blower section, create conditioned air with a temperature difference that is smaller than the temperature difference between the temperature of the air blown out from the air conditioning section and the temperature of room A using the blower section and the air conditioning section, and send the conditioned air to the air intake section and the bathroom air intake section, provide an openable outdoor opening and a bathroom ventilation exhaust section in the bathroom, provide a ventilation air intake section and a ventilation exhaust section in room B, A confluence chamber is provided that connects the return air duct to the ventilation air supply section and connects the bathroom ventilation exhaust section to the ventilation exhaust section, and the confluence chamber is connected to a heat exchange air unit. By blowing the conditioned air into the bathroom, it is possible to selectively discharge the bathroom air C from the outdoor opening to the outside, or to use the heat exchange air unit to draw in the bathroom air C from the bathroom ventilation exhaust section. The heat exchange air unit draws in air D from at least room B from the ventilation exhaust section of room B, exchanges heat with at least room B air D, and then discharges it to the outside, and introduces the outdoor air after heat exchange into the return air duct or the return section. With this means, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom, fresh outdoor air from the heat exchange ventilation unit and the return air of the conditioned air are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the room temperature by the air conditioning section and the blower section in the air conditioning unit which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown into the bathroom, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity. By operating the heat exchange ventilation unit and closing the bathroom's outdoor opening, the mixed air in the bathroom is combined with the indoor air in the bathroom ventilation exhaust chamber to produce combined air with a lower relative humidity. This combined air then flows through the duct into the heat exchange ventilation unit, where it exchanges heat with the outdoor air and is then discharged outdoors, recovering heat from bathing while quickly lowering the absolute humidity in the bathroom. Furthermore, because the combined air with a lower relative humidity flows from the ventilation exhaust chamber and passes through the duct and heat exchange element, the possibility of condensation on the duct and heat exchange element is further reduced, preventing a shortened lifespan of the heat exchange element and preventing mold from growing in the duct and inside the bathroom. After bathing, in summer, rainy season, etc., if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, the heat exchange ventilation unit is stopped and the outdoor opening is opened to exhaust the mixed air from the bathroom to the outside, which quickly reduces the absolute humidity in the bathroom and prevents mold from growing in the bathroom. This provides an air conditioning and ventilation system that is energy-efficient, comfortable, and provides clean air. In addition, because conditioned air is blown directly into the bathroom, the bathroom dries faster after a bath, and clothes can be dried by hanging them in the bathroom. Heat can also be recovered during bathroom air conditioning, bathroom drying, and clothes drying. Therefore, by recovering the heat from the conditioned air supplied to the bathroom almost all year round, further energy savings can be achieved.

[0013] Another means is that the bathroom ventilation exhaust part has a damper that can be opened and closed. This means can prevent the feeling of cold air caused by ventilation when bathing without having to bother stopping the heat exchange ventilation unit or closing the opening of the adjacent room, and when drying the bathroom after bathing in summer or when drying clothes, the heat exchange ventilation unit can be operated to recover heat from air D in room B, etc., saving energy and supplying outdoor air after heat exchange at a comfortable temperature and humidity. [Effects of the Invention]

[0014] According to the present invention, the heat generated when bathing in the bathroom and the heat generated by the conditioned air are recovered, while preventing the shortening of the lifespan of the heat exchange element due to condensation. The bathroom is air-conditioned and ventilated 24 hours a day, preventing mold in the bathroom. The conditioned air efficiently mixes the air throughout the house, introducing fresh air and expelling air containing moisture and odors, thereby providing an air-conditioning and ventilation system that is even more energy-efficient and allows for a life that is always comfortable and always filled with clean air. It is also possible to provide an air conditioning and ventilation system that can be easily installed and maintained from the bathroom. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a cross-sectional view of a building showing the configuration of an air conditioning and ventilation system according to first and second embodiments of the present invention. [Figure 2] 1 is a cross-sectional view of a ventilation exhaust section of a bathroom according to the first embodiment of the present invention; [Figure 3] Bottom view of the ventilation exhaust section [Figure 4] Cross-sectional view of a bathroom and a washroom in accordance with the first embodiment of the present invention. [Figure 5] Cross-sectional view of a bathroom and a washroom in accordance with a second embodiment of the present invention. [Figure 6] FIG. 1 is a cross-sectional view of a building showing the configuration of an air conditioning and ventilation system according to third, fourth, and fifth embodiments of the present invention. [Figure 7] 10 is a cross-sectional view of a confluence chamber according to a third embodiment of the present invention. [Figure 8] Bottom view of the same confluence chamber [Figure 9] Cross-sectional view of a bathroom and a washroom in accordance with a third embodiment of the present invention. [Figure 10] Cross-sectional view of a bathroom and a washroom in accordance with a fourth embodiment of the present invention. [Figure 11] Cross-sectional view of a bathroom and a washroom in embodiment 5 of the present invention [Figure 12] FIG. 10 is a cross-sectional view of a building showing the configuration of an air conditioning ventilation system according to a sixth embodiment of the present invention. [Figure 13] Cross-sectional view of a bathroom and a washroom in accordance with a sixth embodiment of the present invention. [Figure 14] FIG. 10 is a perspective view of a bathroom according to a sixth embodiment of the present invention. [Figure 15] FIG. 10 is a cross-sectional view of a building showing the configuration of an air conditioning ventilation system according to a seventh embodiment of the present invention. [Figure 16] Cross-sectional view of a bathroom and a washroom in embodiment 7 of the present invention [Figure 17] FIG. 13 is a perspective view of a bathroom according to a seventh embodiment of the present invention. [Figure 18] Cross-sectional view of a bathroom and a washroom in embodiment 8 of the present invention [Figure 19] FIG. 13 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to a ninth embodiment of the present invention. [Figure 20] Cross-sectional view of a bathroom and a washroom in embodiment 9 of the present invention [Figure 21] Cross-sectional view of a bathroom and a washroom in a tenth embodiment of the present invention DETAILED DESCRIPTION OF THE INVENTION

[0016] (Embodiment 1) FIG. 1 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to first and second embodiments of the present invention. As shown in the figure, an air conditioning and ventilation system 2 installed in building 1, which is a highly airtight and highly insulated house, air-conditions and ventilates habitable and non-habitable rooms, such as a living room (room A) 4, bedroom (room A) 5, bathroom 6, washroom (room B) 7, toilet (room B) 8, kitchen (not shown), attic (room A) 9, entrance 10, staircase landing 11, hallway (not shown), and underfloor space (room A) 12, which are divided into multiple rooms within building 1. In this case, habitable rooms refer to rooms that are used continuously for living, working, working, gathering, recreation, or other similar purposes, while non-habitable rooms refer to rooms that are not. However, rooms that are difficult to determine as habitable rooms can be determined based on the actual usage. The building 1 has an outer skin tightly covered with insulation material (not shown) and airtight sheeting (not shown), the roof (not shown) is insulated, the foundation (not shown) is insulated, the windows are insulated sashes (not shown) such as triple-glazed resin sashes, and the doors are insulated doors (not shown). All rooms and spaces within the building 1, including the attic (insulated space) 9 and underfloor (insulated space) 12, are insulated spaces. Insulation methods can be broadly divided into external insulation and internal insulation, and each can be adopted depending on its advantages and disadvantages, but this applies to buildings 1 that have no insulation defects in the outer envelope of building 1 and that at least meet the insulation performance requirements of the ZEH standards. Regarding airtightness performance, although it depends on the specifications of the airtight sheet, the target is buildings 1 that maintain the continuity of the airtight layer by applying airtight tape to the joints of the airtight sheet and meet at least a C value of 1.0.

[0017] An air conditioning unit 15 is provided on staircase landing 11 as a return section that produces conditioned air and blows it into rooms, etc. Air conditioning unit 15 is provided with an intake louver 16 into which air conditioned in each room, etc. flows in as return air, an air conditioning section 17 that is connected to an air conditioning outdoor unit 19 installed outdoors by refrigerant piping and electrical wiring (not shown) and has an indoor heat exchanger (not shown) and an indoor fan (not shown), and multiple blower sections 18 that blow the conditioned air into each room, etc. Air conditioning section 17 has a remote control (not shown) that can be used to operate / stop, switch between cooling / heating / dehumidification, set the air volume, set the temperature, set the air outlet direction, etc.

[0018] In this embodiment, the return section is an air conditioning unit 15 that is sealed and covered with walls and insulation, and is located on the staircase landing 11, but it may also be located in the attic 9, under the floor 12, under the stairs (not shown), etc., as long as it is in the return air path through which the air that has been conditioned in each room etc. returns as return air. The return section may also be a compact housing covered with sheet metal or heat insulating material, and may be a partially open space, such as a staircase landing 11, an entrance hall 10, or a corridor, as long as uniform conditioned air can be created by adjusting the relative positions of the air conditioning section 17 and the blower section 18.

[0019] Air intake units 20, 21, 23, 24 and a bathroom air intake unit 22 that blow out conditioned air produced by an air conditioning unit 15 are installed on the ceilings or floors of the living room (room A) 4, bedroom (room A) 5, attic (room A) 9, underfloor (room A) 12 and bathroom 6. There are six air intake units in other rooms and spaces, for a total of 11 units in building 1. The multiple air blowers 18 and air supply sections 20, 21, 23, 24 and bathroom air supply section 22 are connected one-to-one by multiple ducts 30, 31, 33, 34 and duct 32. There are 11 air blowers 18 and 11 ducts 30, etc., and each of the multiple air blowers 18 has a switch (not shown) that allows the temperature to be adjusted by adjusting the air volume and turning on / off the air blowers 18. The airflow rate of each blower 18 is determined based on the volume of each room or space. The airflow rate required for air conditioning is 2.5 m 3 At least 8m per 3 / h or more, ideally 20m 3 / h or more is desirable, and the airflow rate is adjusted depending on the air conditioning load, such as the size of the room and solar radiation. Since the air blower 18 rotates a sirocco fan (not shown) using a highly efficient DC motor (not shown), the rotation speed of the sirocco fan (not shown) is controlled by an electrical component (not shown) or the like depending on the air conditioning load, etc. As a result, the conditioned air generated within the air conditioning unit 15 is blown by the blower section 18 through the ducts 30 and other sections that are all connected to the insulated space, and from the air supply section 20 and other sections and the bathroom air supply section 22 to the living room 4, bedroom 5, attic 9, under the floor 12, and bathroom 6, forming an air conditioning air duct (not shown).

[0020] In this embodiment, the blower 18, the air intake 20, etc., and the duct 30, etc. are connected one-to-one. Changing the airflow rate of the blower 18 directly changes the airflow rate of the air intake 20, etc., making it easy to control air conditioning, such as temperature regulation. However, if the building 1 is highly airtight and insulated, for example, a thick duct may be connected to a single large-volume blower, which may then branch into multiple thin ducts along the way. Alternatively, instead of ducts, chambers made of wood, metal, etc. may be used between floors, in the attic, under the floor, inside walls, etc. to prevent air leakage. Multiple air intakes 20, etc. may also be installed in a single room, etc. As long as the flow of conditioned air is smooth, stable, and has little resistance, and the room, etc. is uniformly conditioned, these changes can be determined from the perspectives of material cost, ease of construction, and maintenance, in relation to the relative positions of the blower and air intake units, etc. within the building 1. Furthermore, the blower unit 18 of this embodiment is an integrated unit with an intake grille (not shown) on the surface of the main body, a fan (not shown), a motor (not shown), and an electrical component (not shown) inside, and a duct connector. However, it is also possible to provide a duct connector on an intake box that only has an intake grille (not shown) and the main body, install it inside the air conditioning unit, connect it to a duct, and install an intermediate duct type blower between the intake box and the air supply unit, which has a fan (not shown), a motor (not shown), and an electrical component (not shown) inside the main body, and is equipped with a duct connector. These modifications can be made based on ease of installation, maintenance, specifications, etc.

[0021] In the living room 4, bedroom 5, attic 9 and underfloor space 12, door undercuts, vents and the like are provided as exhaust sections 40, 41, 43 and 44, and the conditioned air blown out from the air intake section 20 and the like becomes return air after conditioning each room, flows from the exhaust section 40 and the like into the corridor (not shown) and the like, passes through the entrance 10 and staircase landing 11, passes through the intake louver 16 and returns to the air conditioning unit (return section) 15. This creates a return air duct (not shown), which is an air path through which the return air passes through the exhaust section 40 of each room and returns to the air conditioning unit (return section) 15 from the corridor (not shown), entrance 10, staircase landing 11, etc. The air conditioning air duct and the return air duct are connected to form a circulation path (not shown). The intake louver 16 is provided with a filter (not shown) that removes dust and the like from the return air to purify it. The return air usually has the same temperature and humidity as the room, and the CO2 concentration is slightly higher in rooms where people are present, but because the blower unit 18 is constantly running and the conditioned air and return air are circulating within the building 1, the quality of the return air is not otherwise deteriorated compared to the conditioned air that is blown out.

[0022] A heat exchange ventilation unit 50 is provided in the attic 9 to introduce outdoor air into the room and recover all heat of the indoor air to the outdoor air when the indoor air is discharged to the outside, thereby ventilating the entire building 1. The amount of outdoor air introduced by the heat exchange ventilation unit 50 and the amount of indoor air discharged, that is, the ventilation air volume, is, for example, about 100 m 2, with a ceiling height of 2.5m and a ventilation rate of 0.5 times / h, the 24-hour ventilation air volume is 125m 3 / h. In this embodiment, the heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h, strong notch ventilation air volume 250m 3 / h, and the total heat exchange rate is approximately 70%. In the ceilings of the bathroom 6, washroom (room B) 7, and toilet (room B) 8 in the building 1, ventilation exhaust sections 60, 61, and 62 such as exhaust louvers are provided to exhaust air from each room, and are connected to exhaust ducts A65, 66, and 67, respectively. The exhaust ducts A65, 66, and 67 are connected to exhaust duct B71 at a junction 70, and the exhaust duct B71 is connected to the heat exchange ventilation unit 50. An outdoor exhaust hood A75 is provided in a through-hole in the exterior wall of the building 1, and is connected to the heat exchange ventilation unit 50 by an exhaust duct C76.

[0023] The heat exchange ventilation unit 50 has an intake fan (not shown) that introduces outdoor air, an exhaust fan (not shown) that exhausts indoor air, a motor (not shown), a heat exchange element 51 that recovers all the heat from the indoor air and converts it into outdoor air, and an element pre-filter (not shown) that is arranged on the indoor air inlet side of the heat exchange element 51 to prevent dust and the like from the indoor air from adhering to the element. In addition, by providing a maintenance space around the heat exchange ventilation unit 50 and providing an inspection hatch in the ceiling below, it is easy to perform maintenance such as regular cleaning of the heat exchange element 51 and the element pre-filter (not shown). As a result, indoor air passes from the ventilation exhaust section 60 and other sections through the exhaust duct A65 and other sections, the confluence section 70, and the exhaust duct B71, where all heat is recovered by the heat exchange ventilation unit 50, and then passes through the exhaust duct C76 and is exhausted outside from the outdoor exhaust hood A75. The indoor air discharge path is formed between the ventilation exhaust section 60 and the like and the outdoor exhaust hood A75, and is formed by the exhaust duct A65 and the like, the junction section 70, the exhaust duct B71, the heat exchange ventilation unit 50, and the exhaust duct C76. An element prefilter (not shown) is provided in the indoor air discharge path before it enters the heat exchange ventilation unit 50, but other filters may be provided in addition to or in addition to the element prefilter. Also, an exhaust fan for the heat exchange ventilation unit 50 is provided in the indoor air discharge path, but other exhaust fans may be provided in addition to or in addition to the exhaust fan.

[0024] An outdoor air supply hood 77 is provided in a through hole in the exterior wall of the building 1, and is connected to the heat exchange ventilation unit 50 by an air supply duct A78. In the middle of the air supply duct A78, in the attic 9, a filter box 79 containing an outdoor air purification filter (not shown) that purifies the outdoor air that is introduced is installed, and an inspection hatch is provided in the ceiling below to make maintenance such as cleaning the filter easy. A ventilation air intake 80 for blowing outdoor air into the building 1 is provided on the ceiling of the staircase landing 11, in front of the intake louver 16 of the air conditioning unit 15, and is connected to the heat exchange ventilation unit 50 by an air intake duct B81. As a result, outdoor air is introduced through the outdoor air intake hood 77, passes through the air intake duct A78, is purified in the filter box 79, has all of its heat recovered in the heat exchange air unit 50, passes through the air intake duct B81, and is introduced into the room through the ventilation air intake vent 80.

[0025] The outdoor air introduction path is formed between the outdoor air intake hood 77 and the ventilation air intake port 80, and is formed by the air intake duct A78, the filter box 79, the heat exchange ventilation unit 50, and the air intake duct B81. The outdoor air introduction path is provided with an outdoor air purification filter in the filter box 79, but other filters may be provided in addition to or in addition to the outdoor air purification filter. Also, the outdoor air introduction path is provided with an introduction fan in the heat exchange ventilation unit 50, but other introduction fans may be provided in addition to or in addition to the introduction fan. The bathroom 6, washroom (room B) 7, and toilet (room B) 8 are provided with ventilation air intake sections 85, 86, and 87 such as door undercuts that draw some of the return air into each room using a heat exchange air unit 50, and are connected to a return air duct (not shown), which is an air path that returns to the air conditioning unit (return section) 15 from the washroom 7, hallway (not shown), entrance 10, staircase landing 11, etc.

[0026] Exhaust ducts A65, 66, 67 and exhaust duct B71 are exhaust ducts installed in the insulated space between the ventilation and exhaust sections 60, 61, 62 and the heat exchange ventilation unit 50. Therefore, to prevent dust and moisture from passing through the duct and accumulating or being absorbed inside the duct, they are non-insulated ducts made solely of polypropylene and do not have any insulating material or nonwoven fabric inside the duct. The exhaust duct C76 and the intake duct A78 are ducts that come into contact with outdoor air and are located in the insulated space between the outdoor exhaust hood A75 or the outdoor intake hood 77 and the heat exchange ventilation unit 50, so they are highly insulating, moisture-resistant, and flexible ducts. The air supply duct B81 is an air supply duct provided in the heat insulating space between the ventilation air supply port 80 and the heat exchange air supply unit 50, and therefore is a flexible duct with high heat insulating properties and moisture resistance. Since the heat exchange ventilation unit 50, exhaust duct C76, and intake duct A78 come into contact with outdoor air, there is a possibility of condensation and the intrusion of dust from outside, so an inspection hatch must be installed nearby to allow for regular cleaning and replacement. In addition, for exhaust duct A65 connected to bathroom 6, the duct needs to be run up and down as much as possible to prevent moisture from accumulating even if condensation occurs inside, and an inspection hatch needs to be provided so that the inside of the duct can be cleaned and replaced.

[0027] FIG. 2 is a cross-sectional view of the ventilation and exhaust part of the bathroom in accordance with the first embodiment of the present invention, and FIG. 3 is a bottom view of the ventilation and exhaust part. The ventilation and exhaust section 60 of the bathroom 6 consists of an exhaust louver 90, a main body 92, and a duct adapter 93, and draws in air C from the bathroom 6 through an opening 91 of the exhaust louver 90, which is installed so as to be in contact with the ceiling surface (not shown) of the bathroom 6, flows into the main body 92, and then flows into a duct (not shown) connected to the duct adapter 93. The exhaust louver 90 has a filter 94 that purifies the air that is drawn in, and can be removed and cleaned for maintenance from the bathroom 6 side. In addition, at the bottom of the main body 92, downstream of the filter 94, there is a damper 95 that can open and close the air flow by rotating multiple plates, and it can be opened and closed electrically by a damper motor 96, which is operated by a switch (not shown) installed outside the bathroom 6.

[0028] FIG. 4 is a cross-sectional view of a bathroom and a washroom in accordance with the first embodiment of the present invention. Bathroom 6 and washroom (room B) 7 are located on the first floor of building 1, washroom 7 is connected to entrance 10 by a door (not shown), and the ventilation air supply section is an undercut (not shown) of the door, and bathroom 6 is connected to washroom 7 by door 100, and the undercut 85 of door 100 is the ventilation air supply section. A bathroom air supply section 22 that blows out conditioned air produced by the air conditioning unit 15 is provided on the ceiling of the bathroom 6. The ceilings of the bathroom 6 and the washroom (room B) 7 are provided with ventilation and exhaust sections 60, 61 such as exhaust louvers that exhaust air from each room. In bathroom 6, bathroom air supply section 22 is preferably installed above the washing area (not shown) rather than above the bathtub to air-condition the washing area space and dry the washing area floor, or, if clothes are to be dried in bathroom 6, to install it above the hanging rod. Ventilation and exhaust section 60 is installed away from air supply section 6 to prevent short-circuiting of conditioned air from air supply section 6, and also away from undercut 85 of door 100. By allowing the conditioned air and return air from washroom 7 to pass through bathroom 6 as far as possible before flowing into ventilation and exhaust section 60, ventilation, drying, and clothes drying in the bathroom can be carried out more efficiently. The ventilation exhaust section 61 of the washroom 7 is also installed away from the undercut (not shown) of the door of the washroom 7, but relatively close to the undercut 85 of the door 100 of the bathroom 6. This allows the return air from the entrance 10 to flow over a longer distance within the washroom 7, allowing for efficient ventilation, and in the unlikely event that moisture or the like from the bathroom 6 leaks through the undercut 85 of the door 100, it can be quickly exhausted from the washroom 7.

[0029] The capacity and number of air conditioning units 17 are selected depending on the air conditioning load of building 1, but when selecting the capacity, it is desirable to select an air conditioner or the like with a capacity (appropriate rated capacity, at most 100%, for the air conditioning load of the building) that allows the compressor (not shown) to continue operating at a low frequency (around 30 Hz) with a higher COP, as this will allow continuous operation at a low frequency during stable conditions, which is more energy-efficient and provides stable temperature and humidity without hunting. In the air conditioning unit 15, the air sucked in from the intake louver 16 (air that is a mixture of return air from the room or space and introduced outdoor air at the staircase landing 11) is reliably mixed with the blown-out air that has been conditioned by the air conditioning section 17, and conditioned air is produced with a temperature difference that is smaller than the temperature difference between the temperature of the blown-out air from the air conditioning section 17 and the room temperature.It is desirable that the air volume of the air conditioning section 17 be 50% or less of the total air volume of the multiple blowing sections 18 so that the conditioned air has a temperature difference of within 5K when cooling and within 10K when heating relative to the target temperature of each room or space.

[0030] Each room and space is conditioned to a uniform, comfortable temperature by blowing conditioned air through a plurality of ducts by a plurality of blowing parts 18 from air supply parts provided on the ceiling or wall of each room and space. For example, if the area of ​​one building is approximately 100m 2 When the ceiling height is 2.5m, an air conditioning unit with a cooling capacity equivalent to 4kW is installed, and in weak wind mode, the air volume during cooling operation is 600m 3 The air volume per unit of the blower 18 that blows air to each room and space is 100 m 3 / h, medium air volume 150m 3 / h, and strong winds of 200m 3 / h, the total air volume for 10 blowers 18 is 1000m 3 / h~2000m 3 / h, which is larger than the airflow rate of the air conditioning unit 17, and an airflow rate of 30 to 60% of the total airflow rate is set as the airflow rate of the air conditioning unit 17 (weak wind mode). The air conditioning air volume is the volume of air passing through the heat exchanger (not shown) of the air conditioning unit 17. In order to avoid pressure loss due to passing through the heat exchanger so that a large volume of conditioned air can be blown out to each room, in the case of the air conditioning unit 17 having an air duct that bypasses the heat exchanger, the air volume of the bypass air duct is excluded from the air conditioning air volume.

[0031] In the above configuration, to operate the air conditioning ventilation system 2, the remote control of the air conditioning unit 17 and the switch of the air blower unit 18 are set appropriately, and the air conditioning unit 17, the multiple air blowers 18, and the heat exchange ventilation unit 50 are operated appropriately. The return air after air conditioning from spaces such as the living room 4, the attic 9, and the underfloor space 12 is returned to the landing 11 of the stairs by a plurality of fans 18 through return air passages. Furthermore, fresh outdoor air that has been purified by the filter box 79 and has exchanged heat with the indoor air in the heat exchange air unit 50 enters the staircase landing 11 through the ventilation air intake 80. These airs are mixed at the landing 11 of the staircase, cleaned by a return air inlet filter (not shown) in the intake louver 16 of the air conditioning unit 15, and then flow into the air conditioning unit 15. The air conditioning unit 17 draws some of the air drawn in through the intake louver 16 through an air conditioning unit intake port (not shown) and cleans it with an air conditioning unit filter (not shown).Some of the air that has exchanged heat with the refrigerant in a heat exchanger (not shown) is blown out downward through an air conditioning unit outlet (not shown). The remaining air sucked in from the intake louver 16 in the multiple blowing sections 18 bypasses the air conditioning section 17 and becomes well-mixed conditioned air together with the air blown out from the air conditioning section 17 in a mixing section (not shown), which is the space between the air conditioning section 17 and the blowing section 18. The plurality of blowers 18 draw in conditioned air through an intake grill (not shown), further purify it through a blower filter (not shown), and then let it flow into ducts 30 and other channels.

[0032] In this embodiment, the air volume of the air conditioning unit 17 is approximately 600 m 3 / h, the temperature of the blown air is about 10K during cooling and about 20K during heating compared to the temperature of the intake air, but the total air volume of the multiple blower units 18 is about 1500 m 3 / h, the remaining 900m3 of the air sucked in through the intake louver 16 3 When this air is mixed with the air bypassing the air conditioning unit 17 at a rate of about 1500 m / h in a mixing unit (not shown), the 3 The conditioned air, which is about 5K or less in cooling mode and about 10K or less in heating mode, is drawn into the plurality of blower sections 18 with respect to the room temperature of 1000 / h.

[0033] Here, since the building 1 is highly airtight and insulated, and there is almost no temperature gradient in the return air duct, the temperature of the intake air of the air conditioning unit 17 is almost the same as the temperature of the staircase landing 11, the average temperature of the return air from each room and each space, and the average temperature of each room and each space. Approximately 1500m generated in air conditioning unit 15 3 The conditioned air of / h is purified by multiple filters to within approximately 5K during cooling and approximately 10K during heating for each room and space, and contains fresh outdoor air. The conditioned air is blown by blower 18 through ducts 30 and other passages from air intake sections 20, 21, 22, 23, and 24 to living room (room A) 4, bedroom (room A) 5, bathroom 6, attic (room A) 9, and underfloor (room A) 12, and the entire building 1, including bathroom 6, is ventilated to a very comfortable, uniform temperature and with very good air quality. Furthermore, the conditioned air is dehumidified during the rainy season and summer by the reheat dehumidification operation of the air conditioning unit 17 while maintaining the temperature, and the air is maintained at an appropriate relative humidity.

[0034] During normal operation, except during and after bathing, the ventilation unit (not shown) that blows air to the bathroom air supply unit 22 of the bathroom 6 is turned off, and the bathroom 6 is not air-conditioned. Non-occupied rooms other than the attic 9 and underfloor 12 are not air-conditioned. Unoccupied rooms such as the bathroom 6, washroom 7, and toilet 8 are designated as dirty zones due to odor and humidity. The conditioned air blown into the clean zone, such as occupied rooms, merges with the indoor air. Return air with a slightly higher CO2 concentration from occupied rooms is drawn through the dirty zone ventilation air supply unit 85, and odorous and humid air from the bathroom 6, washroom 7, and toilet 8 is exhausted to the outdoors through the ventilation air supply unit 60. This prevents odorous and humid air from escaping into the clean zone, such as occupied rooms. Instead, return air with a comfortable temperature and humidity level and relatively good air quality flows in, even in unoccupied rooms. This is desirable for energy conservation and maintaining comfortable and excellent air quality throughout the building 1. Furthermore, even if heat is recovered from the exhaust air using the heat exchange ventilation unit 50, the total heat exchange rate is approximately 70%, and it is not desirable to actively air-condition non-occupied rooms by discharging approximately 30% of the heat.

[0035] However, because bathroom 6 in building 1 is typically small and well insulated, the air conditioning load is low, and even if it is air-conditioned, the actual situation is that the power consumption is almost the same. If you want to keep bathroom 6 comfortable at all times or if you want to actively air-condition bathroom 6 for purposes such as drying the bathroom or clothes, you can reduce the airflow volume of the blower and blow conditioned air into bathroom 6. In this case, if the airflow volume of the blower is greater than the ventilation airflow volume of the heat exchange ventilation unit for bathroom 6, some of the conditioned air blown into bathroom 6 will flow into washroom 7 through the undercut in door 100 and be exhausted from washroom 7's ventilation exhaust section 61. However, unless you are taking a bath or have just finished bathing, the absolute humidity of the air in bathroom 6 is not high, so this is not a problem. The reason for air conditioning the attic 9 and underfloor space 12 is that even if building 1 is a highly insulated house, heat is transferred from the roof and underfloor space 12, which account for a large proportion of the building's exterior surface area, and they are also exposed to solar radiation, so the air conditioning load is greater than in other rooms and spaces, and if air conditioning is not performed, the heat from the ceiling and floor below attic 9 will prevent uniform temperature and humidity inside building 1.

[0036] The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. In the above operating state, some of the return air, which has a comfortable temperature and humidity and good air quality after air-conditioning the room or space, flows into the entrance 10, staircase landing 11, corridor (not shown), etc., and through the heat exchange ventilation unit 50, flows into the washroom 7 through the ventilation air supply section 86 of the washroom 7, and then flows into the toilet 8 through the ventilation air supply section 87 of the toilet 8. The air from toilet 8 and the return air flowing in are combined and flow for about 30 m. 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust 62. Therefore, the air containing moisture and odor generated in the toilet 8 and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the toilet 8. The air D from bathroom 7 and the return air that has flowed in join together and travel about 30m 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 61. Therefore, air D containing moisture that has leaked from the bathroom 6 into the washroom 7, moisture and odors generated in the washroom 7, and CO2 in the return air are mainly exhausted to the outdoors, and to replace them, return air with a comfortable temperature and humidity and good air quality flows into the washroom 7. The combined air of the air D from the washroom 7 and the incoming return air flows into the bathroom 6 through the ventilation air supply section 85 of the bathroom 6, where the combined air and the air C from the bathroom 6 are combined and travel for about 65 m. 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust 60. Therefore, under normal conditions, the air C containing moisture and odor generated in the bathroom 6 and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the bathroom 6. In other words, the heat exchange ventilation unit 50 is used to remove 125 m3 of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 125m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1.

[0037] The following explains how to operate the device during and after bathing. Before taking a bath, a switch (not shown) provided outside the bathroom 6 is used to electrically close the damper 95 of the ventilation exhaust section 60 of the bathroom 6 using a damper motor 96. As a result, even if heat exchange ventilation unit 50 operates at a ventilation air volume 24 hours a day, no air is exhausted from ventilation exhaust section 60, preventing the feeling of cold air caused by the exhaust air speed while bathing. Naturally, not operating the bathroom 6 air blower also prevents the feeling of cold air. This is because the air blown out from bathroom air supply section 22 is conditioned air with a maximum temperature difference of approximately 5 K when cooling and approximately 10 K when heating compared to room temperature, and because the temperature difference is 1 to 2 K when stable, even when heating, a feeling of cold air can be felt when the air blows directly on the body while bathing. However, in summer, if the bathroom becomes very hot, the damper 95 can be opened to allow the air to escape. Even with the damper 95 closed, the 24-hour ventilation airflow of the heat exchange ventilation unit 50 is maintained at 50 m from the ventilation exhaust part 61 of the washroom 7. 3 / h, 50m from the ventilation exhaust 62 of toilet 8 3 / h of air containing odors, humidity, and CO2 is exhausted, and the entire building 1 is exhausted for 100m 3 / h ventilation air volume is ensured.

[0038] After taking a bath, the damper 95 is opened by a switch (not shown) and the heat exchange ventilation unit 50 is set to the strong notch of 250 m. 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 Drive at / h. This allows the large amount of steam generated during bathing, along with the odors and chemical components contained in it, to be absorbed into the 130m3 water supply to Bathroom 6. 3 / h, the air in the bathroom 6 meets, mixes, and dilutes with the conditioned air, which has a lower absolute humidity and relative humidity than the air in the bathroom 6. 3When the combined air of 1000 sq ft (2000 m2) passes through the filter 94 of the ventilation exhaust section 60, dust and large amounts of water vapor adhere to the filter 94. This removes the water vapor from the exhaust air, as well as the chemical components and odors contained therein, and the air flows into the exhaust duct A65, reducing the relative humidity of the air passing through the exhaust duct A65 to 90% or less. Because the temperature difference between the temperature around the exhaust duct A65, which is installed in an insulated space, and the temperature of the air passing through is 5K or less, condensation is unlikely to occur inside the exhaust duct A65. The size, thickness, area, material, etc. of the mesh of the filter 94 can be changed as appropriate to optimal specifications depending on the amount of air passing through, the dust and water vapor contained therein, and the chemical components contained therein. In addition, since the filter 94 is removable from the ventilation exhaust section 60, if a large amount of dust, water vapor, or the chemical components contained therein adheres to the filter 94, it can be removed and cleaned to maintain performance.

[0039] Then, from the bathroom air supply section 22, conditioned air with a temperature difference of 1 to 2 K and low relative or absolute humidity compared to the air in the bathroom 6 when stable is blown into the bathroom 6, and hits the wet ceiling, walls, floor, bathtub, etc. inside the bathroom 6, and by exhausting the water vapor, etc. mentioned above, it can dry faster and more reliably than exhaust by a ventilation fan, etc. In particular, for those who prefer Japanese-style homes and have the bathtub, bathroom 6, etc. made from cypress, in order to prevent the cypress from deforming, rotting, or growing mold, the ideal way to dry the bathroom after bathing is to blow dry air at a temperature that is close to the room temperature of the bathroom 6 and has low absolute and relative humidity onto the walls of the bathtub and bathroom 6, and then exhaust the evaporated water vapor and other substances together with the air.This can be achieved by implementing the means in this embodiment.

[0040] 130m from Bathroom 6 through exhaust duct A65 3 / h exhaust air from the washroom 7 passes through the exhaust duct A66 at the junction 70 and reaches a distance of 60m 3 / h exhaust air, 60m from toilet 8 through exhaust duct A67 3 / h exhaust gas, so the combined 250m 3The relative humidity of the exhaust air of 1 / h becomes 80% or less, and the exhaust air passes through the exhaust duct B71 and flows into the heat exchange ventilation unit 50. In the heat exchange ventilation unit 50, the combined exhaust gas passes through an element pre-filter (not shown) to remove dust and the like, and is passed through a heat exchange element 51 to produce a purified 250m 3 / h of outdoor air, and is exhausted to the outside through exhaust duct C76 and outdoor exhaust hood A75. Therefore, exhaust gas with a relative humidity of 80% or less from which chemical components have been removed passes through the heat exchange element 51, which reduces condensation and adhesion of chemical components to the heat exchange element 51 and prevents deterioration and shortening of its lifespan due to this.

[0041] The heat exchange ventilation unit 50 then ventilates the 250m 2 air containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the relative humidity in bathroom 6 drops and bathroom 6 becomes dry, operation returns to the normal state other than during and after bathing as described above. If a clothesline is installed in bathroom 6, washed clothes are hung on it, and the system is set to the post-bath operating state described above, conditioned air with a stable temperature difference of 1 to 2 K and a low relative or absolute humidity compared to the bathroom air is blown out from bathroom air supply section 22 into bathroom 6 and hits the clothes. Therefore, by venting water vapor and the like as described above, clothes can be dried more quickly and reliably than simply drying them indoors, and approximately 70% of the total heat supplied for drying the clothes can be recovered. The temperature of the conditioned air blown out from bathroom air supply section 22 can be adjusted by about 1 to 5 K, relative to 1 to 2 K above room temperature when stable, by changing the airflow rate of the blower and the temperature setting of the air conditioning section. Therefore, if you want to dry clothes more quickly, you can increase the temperature difference to about 5 K only for the conditioned air blown out from bathroom air supply section 22 in bathroom 6, and increase the airflow rate of the blower and the ventilation air rate of heat exchange ventilation unit 50.

[0042] Here, if the outdoor exhaust hood A75 is provided on the suction side of the heat exchanger (not shown) of the air conditioning outdoor unit 19 and a partition wall is provided between the air conditioning outdoor unit 19 and the outer wall (not shown) so that the exhaust air from the outdoor exhaust hood A75 is drawn into the heat exchanger without leaking, the exhaust air carrying all the heat not recovered by the heat exchange ventilation unit 50 from the outdoor exhaust hood A75 will join with the outdoor air, be drawn into the heat exchanger of the air conditioning outdoor unit 19, and exchange heat with the refrigerant, thereby improving the COP of the air conditioning unit and achieving greater energy savings. For example, in the summer, even when air-conditioned indoor air (exhaust air) and outdoor air (outdoor air) exchange heat in the heat exchange ventilation unit 50, typically only about 50% to 70% of the total heat is exchanged. Therefore, exhaust air with less total heat (lower temperature and humidity) than outdoor air is discharged from the outdoor exhaust hood A75, and this air and the outdoor air merge to form air with less total heat than the outdoor air. This air is then passed through the heat exchanger (condenser) and undergoes total heat exchange with the refrigerant. Also, in the winter, even when heated indoor air (exhaust air) and outdoor air (outdoor air) exchange heat in the heat exchange ventilation unit 50, typically only about 60% to 80% of the total heat is exchanged. Therefore, exhaust air with more total heat (higher temperature and humidity) than outdoor air is discharged from the outdoor exhaust hood A75, and this air and the outdoor air merge to form air with more total heat than the outdoor air. This air is then passed through the heat exchanger (evaporator) and undergoes total heat exchange with the refrigerant.

[0043] Furthermore, in this embodiment, the heat exchange element 51 that recovers the total heat of the indoor air into the outdoor air that is introduced is desirably constructed and made of a material that allows moisture in the exhaust air discharged outdoors to move appropriately to the outdoor air that is introduced into the building 1, but that makes it difficult for odors in the exhaust air to move, for example, it is desirable to include an adsorbent material such as activated carbon. In this case, the odors do not move and are exhausted to the outside together with the exhaust air. When used in an environment with a lot of condensation or odor, the heat exchange efficiency will be poor and drainage work will be required, but a sensible heat exchange element may be used instead of the total heat exchange element 51. In addition, in this embodiment, the damper 95 of the ventilation exhaust section 60 of the bathroom 6 is opened and closed electrically by a damper motor 96 to adjust the exhaust air volume from the bathroom 6, but instead, a mechanism can be provided to block the exhaust air duct by manually sliding a shutter from the bathroom 6 side below the exhaust louver 90 of the ventilation exhaust section 60, making it possible to reliably adjust the exhaust air volume with a simple mechanism. In addition, in this embodiment, the damper 95 of the ventilation exhaust section 60 of the bathroom 6 is opened and closed electrically by a damper motor 96 to adjust the exhaust air volume from the bathroom 6, but instead, a damper that opens and closes electrically may be provided midway along the exhaust duct A65, or a connection port for connecting the exhaust duct from the bathroom 6 may be provided in the heat exchange ventilation unit 50, and a damper may be provided at that connection port. Furthermore, in this embodiment, damper 95 only has the function of opening and closing, but if the exhaust air volume could be adjusted linearly, for example by linearly changing the opening area, the exhaust air volume from the bathroom could be adjusted more precisely. For example, depending on the absolute humidity and relative humidity in the bathroom, water vapor could be exhausted more quickly, or the exhaust air volume could be increased to a level that does not give the feeling of cold air. Furthermore, in this embodiment, the damper 95 is provided in the ventilation exhaust section 60 of the bathroom 6, but it may also be provided in the other ventilation exhaust sections 61, 62. For example, when the damper 95 of the ventilation exhaust section 60 of the bathroom 6 is slightly closed, the damper of the ventilation exhaust section 61 of the washroom 7 can be slightly opened, making it easy to maintain the ventilation air volume for the entire building 1.

[0044] This embodiment is described assuming a Japanese home with a separate room layout that includes a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a dressing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet found in homes overseas. For example, a ventilation exhaust unit corresponding to the bathroom ventilation exhaust unit is installed above the shower and bathtub in the bathroom, a bathroom air supply unit that blows conditioned air into the bathroom is installed, and a ventilation exhaust unit corresponding to the washroom ventilation exhaust unit is installed above the toilet and sink in the bathroom. It is also possible to install ventilation exhaust units corresponding to the washroom ventilation exhaust unit in other rooms, and the same effects can be achieved by these actions.

[0045] As a result, fresh outdoor air and conditioned air return from heat exchange ventilation unit 50 are converted into fresh conditioned air by air conditioning unit 17 and blower 18 in air conditioning unit 15, which serves as the return section, with a temperature difference smaller than the temperature difference between the air blown out by air conditioning unit 17 and the room temperature. This fresh conditioned air is then sent to bathroom 6 and the room for conditioning. After bathing, the conditioned air and bathroom air mix in bathroom 6, lowering the relative humidity. This bathroom air is then exhausted by heat exchange ventilation unit 50, quickly lowering the absolute humidity in bathroom 6. The bathroom air with its reduced relative humidity flows into heat exchange ventilation unit 50, exchanges heat with the outdoor air, and is then exhausted to the outside. This recovers heat during bathing, reduces condensation on the heat exchange element, prevents its lifespan, and prevents mold growth in bathroom 6. This results in an air conditioning and ventilation system 2 that is energy-efficient, provides comfortable, and clean air. In addition, because conditioned air is blown directly into the bathroom 6, comfort before bathing is improved, the bathroom dries faster after bathing, and clothes can be dried by hanging them out to dry in the bathroom 6. Heat can also be recovered when air-conditioning the bathroom 6, drying the bathroom, and drying clothes. Therefore, by recovering the heat from the conditioned air supplied to the bathroom 6 throughout the year, further energy savings can be achieved.

[0046] (Embodiment 2) FIG. 5 is a cross-sectional view of a bathroom and a washroom in accordance with the second embodiment of the present invention. In this second embodiment, the configuration of the ventilation and exhaust section 160 of the bathroom 6 is different from that of the first embodiment, and as a result, the operation and effect are different. Below, only the parts that differ from the first embodiment will be explained; the parts that are not explained are basically the same as the first embodiment. The ventilation exhaust section 160 of the bathroom 6 has a ventilation fan 161 inside the main body 92, which consists of a sirocco fan (not shown), a DC motor (not shown), and an electrical section (not shown), and is connected to an external switch (not shown) that can operate / stop the ventilation fan 161 and adjust the airflow volume. Therefore, even if the airflow rate of the heat exchange ventilation unit 50 is not adjusted, adjusting the airflow rate of the ventilation fan 161 with an external switch will cause the motor (not shown) of the ventilation fan 161 to rotate to achieve the set airflow rate. Air from the bathroom 6 at the set airflow rate is sucked in through the exhaust louvers 90 of the ventilation and exhaust section 160 of the bathroom 6, passes through the ventilation fan 161, and then through a duct adapter (not shown) to the exhaust duct A65, the junction 70, and the exhaust duct B71, before being forced into the heat exchange ventilation unit 50. The ventilation fan 161 is a sirocco fan that is resistant to static pressure, and its motor is a DC motor. Therefore, the rotation speed is adjusted to achieve the set airflow rate, and the air at the set airflow rate passes through the heat exchange element 51 of the heat exchange ventilation unit 50, regardless of the setting of the exhaust fan (not shown), and is then discharged outside. However, if the air volume of heat exchange ventilation unit 50 is not adjusted, the setting of the introduction fan (not shown) will not change, resulting in an unbalanced intake and exhaust air flow to heat exchange element 51 and a deterioration in total heat exchange efficiency. Therefore, it is desirable to link the adjustment of the air volume of heat exchange ventilation unit 50 with the adjustment of the air volume of ventilation fan 161, as this improves the balance between intake and exhaust air flow to heat exchange element 51, maintains total heat exchange efficiency, and is expected to have the benefits of reduced noise and power consumption due to a decrease in static pressure.

[0047] For example, in normal operation other than during and after bathing, the heat exchange ventilation unit 50 operates at a 24-hour ventilation air volume of 125 m 3 / h, and by setting the external switch, the ventilation fan 161 of the ventilation exhaust part 160 of the bathroom 6 is set to about 65 m 3 / h of air enters the heat exchange ventilation unit 50 from the ventilation exhaust section 60, so the same effects as in the first embodiment can be expected. Then, when the ventilation fan 161 is stopped using an external switch before taking a bath, the resistance of the ventilation fan 161 etc. causes the heat exchange ventilation unit 50 to continue ventilation operation 24 hours a day, and even without the damper 95, almost no air is exhausted from the bathroom 6, and the exhaust air speed is close to zero, preventing the feeling of cold air while bathing.

[0048] After that, after taking a bath, the external switch is set to turn on the ventilation fan 161 for about 130 m 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 / h, the same effect as in the first embodiment can be expected. Furthermore, when drying clothes in bathroom 6, the ventilation fan 161 can be set to a speed of approximately 200 m 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the strong setting of 200 m / h by using a switch (not shown). 3 / h, the ventilation air volume and air conditioning air volume of the bathroom 6 will be 200 m 3 / h, which allows clothes to dry even faster and more reliably. Because the wind speed and absolute humidity of the air that directly hits the clothes are important for clothes drying, the same air intake section 22 can send out about 1.5 times the air volume and wind speed, and the water vapor that evaporates during drying of clothes can also be exhausted with 1.5 times the ventilation air volume. As described above, the ventilation air volume in the bathroom 6 can be changed, so the air volume can be increased when drying the bathroom or clothes, thereby speeding up the realization of these effects, and the ventilation air volume can be minimized when bathing, reducing the feeling of cold air.

[0049] (Embodiment 3) FIG. 6 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to the third, fourth and fifth embodiments of the present invention. This embodiment 3 differs from embodiment 1 in the configuration of the ventilation and exhaust sections 260, 261 of the washroom 7 and bathroom 6, and as a result, the operation and effect are different. Below, only the parts that differ from embodiment 1 will be explained, and the parts that are not explained are basically the same as embodiment 1. As shown in the figure, an air conditioning and ventilation system 202 installed in building 1, which is a highly airtight and highly insulated house, air-conditions and ventilates living and non-living rooms that are divided into multiple rooms within building 1, such as a living room (room A) 4, bedroom (room A) 5, bathroom 6, washroom (room B) 7, toilet (room B) 8, kitchen (not shown), attic (room A) 9, entrance 10, staircase landing 11, hallway (not shown), and underfloor space (room A) 12. Ventilation and exhaust sections 260, 261, 62 such as exhaust louvers that exhaust air from each room are provided on the ceilings of bathroom 6, washroom (room B) 7, and toilet (room B) 8 in building 1. Ventilation and exhaust section 261 of washroom 7 is connected to ventilation and exhaust section 260 of bathroom 6 by exhaust duct A266, ventilation and exhaust section 260 of bathroom 6 is connected to junction 270 by exhaust duct A265, ventilation and exhaust section 62 of toilet 8 is connected to junction 270 by exhaust duct A67, and junction 270 is connected to heat exchange ventilation unit 50 by exhaust duct B71. The exhaust ducts A265, 266 are exhaust ducts installed in the insulated space between the ventilation and exhaust sections 260, 261 and the heat exchange air unit 50, and are therefore non-insulated ducts made solely of polypropylene ducts, with no insulating material or nonwoven fabric on the inside of the duct, to prevent dust and moisture from passing through the duct and accumulating or being absorbed inside the duct. In addition, for exhaust duct A265 connected to bathroom 6, the duct needs to be run up and down as much as possible to prevent moisture from accumulating in the event of condensation inside, and an inspection hatch needs to be provided so that the inside of the duct can be cleaned and replaced.

[0050] FIG. 7 is a cross-sectional view of the confluence chamber in the third embodiment of the present invention, and FIG. 8 is a bottom view of the confluence chamber. Bathroom 6 ventilation exhaust section 260 consists of exhaust louvers 290, a main body (junction chamber) 292 with a larger internal volume than a normal branch duct, a duct adapter 293, and two ventilation intake ports 297. Air from bathroom 6 is drawn in through openings 291 of exhaust louvers 290, which are installed so as to be in contact with the ceiling surface (not shown) of bathroom 6, and flows into main body (junction chamber) 292. The bathroom 6 air merges with air from washroom 7 that flows into main body (junction chamber) 292 from ventilation intake port 297, which is connected to exhaust duct A266 from bathroom 7 ventilation exhaust section 261, and the merged air flows into a duct (not shown) connected to duct adapter 293. There is one ventilation intake 297 on each side of the main body 292, and either or both may be used to draw in air from sanitary areas such as the washroom (room B) 7, toilet (room B) 8, shoe closet (room B), and walking closet (room B). The exhaust louver 290 has a filter 294 that purifies the air that is drawn in, and can be removed and cleaned from the bathroom 6 side for maintenance. In addition, at the bottom of the main body 292, downstream of the filter 294, there is a damper 295 that can open and close the air flow by rotating multiple plates, and it can be opened and closed electrically by a damper motor 296, which is operated by a switch (not shown) installed outside the bathroom 6.

[0051] The internal volume of the main body (confluence chamber) 292 should be determined based on the ventilation air volume of the entire house, the ventilation air volume from the bathroom 6, the normal average humidity of the bathroom 6, toilet 8, washroom 7, and other sanitary areas, the storeroom (not shown), or the kitchen (not shown), and the humidity at high humidity such as when taking a bath in the bathroom 6. For example, if the floor area is 100 m, 2 , with a ceiling height of 2.5m and a ventilation rate of 0.5 times / h, the 24-hour ventilation air volume is 125m 3 / h, the air volume of each of bathroom 6, toilet 8, and washroom 7 is 65m 3 / h, 30m 3 / h, 30m 3 / h, when the average humidity is 50% or less and the humidity during bathing is 80% or more, the air volume flowing from the bathroom 6 to the main body (confluence chamber) 292 is 65 m 3 / h(0.02m3 The minimum internal volume of the main body (confluence chamber) 292 is 0.02 m3 so that the air (air) is discharged from the main body (confluence chamber) 292 once per second. 3 The dimensions are 250mm wide x 250mm deep x 250mm high.

[0052] FIG. 9 is a cross-sectional view of a bathroom and a washroom in accordance with the third embodiment of the present invention. The ceilings of the bathroom 6 and the washroom (room B) 7 are provided with ventilation and exhaust sections 260, 261 such as exhaust louvers that exhaust air from each room. One of the ventilation intake ports 297 is connected to an exhaust duct A266 connected to the ventilation exhaust section 261 of the bathroom 7 so as to draw in air from the bathroom 7, and the other ventilation intake port 297 is closed. The combined air formed by the air from the washroom 7 and the air from the bathroom 6 joining together within the main body (not shown) of the ventilation exhaust section 260 of the bathroom 6 flows from a duct adapter (not shown) through the exhaust duct A265 toward the confluence section (not shown). In Figure 9, an air supply section 298 is provided on the ceiling of the washroom 7, and is connected to a duct 299 from an air blower (not shown) in the air conditioning unit (not shown), so that conditioned air can be blown directly into the washroom 7. However, if the washroom 7 has a hanging rod or space for drying clothes, an air supply section can be provided in the washroom 7 to dry clothes quickly and reliably. In this case, the operation method can be the same as that for drying clothes in the bathroom 6 in the first embodiment. This is also true for the first and second embodiments.

[0053] In normal operation other than when taking a bath and after taking a bath, the air blower (not shown) that blows air to bathroom air supply section 22 of bathroom 6 is stopped, and bathroom 6 is not air-conditioned. The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. In the above operating state, some of the return air, which has a comfortable temperature and humidity and good air quality after air-conditioning the room or space, flows into the entrance 10, staircase landing 11, corridor (not shown), etc., and through the heat exchange ventilation unit 50, flows into the washroom 7 through the ventilation air supply section 86 of the washroom 7, and then flows into the toilet 8 through the ventilation air supply section 87 of the toilet 8. The air from toilet 8 and the return air flowing in are combined and flow for about 30 m. 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 62 and is exhausted to the outside. Therefore, the air containing moisture and odor generated in the toilet 8 and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the toilet 8.

[0054] The air from washroom 7 and the return air flowing in are combined and flow about 30m 3 / h of air flows from the ventilation exhaust section 261 through the exhaust duct A266 and into the main body (not shown) through the ventilation inlet 297 of the ventilation exhaust section 260 of the bathroom 6, and is then exhausted to the outside of the room through the heat exchange ventilation unit 50. Therefore, the moisture leaking from the bathroom 6 into the washroom 7, the air containing the moisture and odor generated in the washroom 7, and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the washroom 7. The combined air of the air from the washroom 7 and the inflowing return air further flows into the bathroom 6 from the ventilation air supply section 85 of the bathroom 6, where the combined air and the air from the bathroom 6 are combined and spread over a distance of about 65 m. 3 / h of air flows into the main body (not shown) from the opening 291 of the ventilation exhaust section 260, joins and mixes with the air flowing in from the ventilation exhaust section 261 of the washroom 7, and flows for about 95 m 3 / h of combined air enters the heat exchange ventilation unit 50 and is exhausted to the outside. Therefore, under normal conditions, the air containing moisture and odor generated in the bathroom 6 and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the bathroom 6. In other words, the heat exchange ventilation unit 50 is used to remove 125 m3 of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 125m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1.

[0055] The following explains how to operate the device during and after bathing. Before taking a bath, a switch (not shown) provided outside the bathroom 6 is used to electrically close the damper 295 of the ventilation exhaust section 260 of the bathroom 6 using a damper motor 296. As a result, even if heat exchange ventilation unit 50 operates at the ventilation air volume 24 hours a day, no air is exhausted from ventilation exhaust section 260, preventing the feeling of cold air caused by the exhaust air speed while bathing. Naturally, the feeling of cold air is also prevented by not operating the air blower section of bathroom 6. However, if the bathroom becomes very hot in the summer, damper 295 can be opened to exhaust air. Even when the damper 295 is closed, the 24-hour ventilation operation of the heat exchange ventilation unit 50 allows the 50 m3 of air from the washroom, which contains odors, moisture, and CO2, to flow in from the ventilation exhaust part 261 of the washroom 7. 3 / h of air passes through the exhaust duct A266, the ventilation intake 297 of the ventilation exhaust section 260 of the bathroom 6, the main body 292, the duct adapter 293, the exhaust duct A265, etc., and is discharged to the outside of the room, and is 3 / h of air containing odors, humidity, and CO2 is exhausted to the outside, and the entire building 1 is 3 / h ventilation air volume is ensured.

[0056] After taking a bath, the damper 295 is opened by a switch (not shown) and the heat exchange ventilation unit 50 is set to the strong notch of 250 m. 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 Drive at / h. This allows the large amount of steam generated during bathing, along with the odors and chemical components contained in it, to be absorbed into the 130m3 water supply to Bathroom 6. 3 / h, the air in the bathroom 6 meets, mixes, and dilutes with the conditioned air, which has a lower absolute humidity and relative humidity than the air in the bathroom 6. 3The combined air of 60 m / h passes through the filter 294 of the ventilation exhaust unit 60, and dust and large water vapor adhere to the filter 294. This removes the water vapor from the exhausted air, as well as the chemical components and odors contained therein. Furthermore, the air from the bathroom 60 m / h has lower absolute and relative humidity than the air from the bathroom 7 through the ventilation exhaust unit 261. 3 The air flows through the exhaust duct A265, and the air from the exhaust duct A265 merges with the air from the exhaust duct A265 in the main body (merging chamber) 292, where it is mixed, diluted, and flows into the exhaust duct A265, so the relative humidity of the air passing through the exhaust duct A265 drops to 80% or less. Since the temperature difference between the temperature around the exhaust duct A265, which is installed in an insulated space, and the temperature of the air passing through is 5K or less, condensation is unlikely to occur inside the exhaust duct A265. The size, thickness, area, material, etc. of the mesh of the filter 294 can be changed appropriately to optimal specifications depending on the amount of air passing through, the dust and water vapor contained therein, and the chemical components contained therein. In addition, since the filter 294 is removable from the ventilation exhaust section 60, if a large amount of dust, water vapor, or the chemical components contained therein adheres to the filter 294, it is possible to maintain performance by removing and cleaning it.

[0057] Then, to replace this air, conditioned air with a lower relative humidity or absolute humidity than the indoor air flows into the bathroom 6, hitting the wet ceiling, walls, floor, bathtub, etc. in the bathroom 6, and exhausting water vapor etc. allows for faster and more reliable drying than exhaust by a ventilation fan, etc. 190m from Bathroom 6 through exhaust duct A265 3 / h exhaust air from toilet 8 passes through exhaust duct A67 at the junction 70 and reaches 60m 3 / h exhaust gas, so the combined 250m 3 The relative humidity of the exhaust air of 1 / h becomes 70% or less, and the exhaust air passes through the exhaust duct B71 and flows into the heat exchange ventilation unit 50. In the heat exchange ventilation unit 50, the combined exhaust gas passes through an element pre-filter (not shown) to remove dust and the like, and is passed through a heat exchange element 51 to produce a purified 250m 3 / h of outdoor air, and is exhausted to the outside through exhaust duct C76 and outdoor exhaust hood A75. Therefore, exhaust gas with a relative humidity of 70% or less from which chemical components have been removed passes through the heat exchange element 51, which reduces condensation and adhesion of chemical components to the heat exchange element 51 and prevents deterioration and shortening of its lifespan.

[0058] The heat exchange ventilation unit 50 then ventilates the 250m 2 air containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the relative humidity in bathroom 6 drops and bathroom 6 becomes dry, operation returns to the normal state other than during and after bathing as described above. Even if conditioned air is not blown out from bathroom air supply part 22 because the air blower for bathroom 6 is not operating or the air blower or the like is broken, in this embodiment, the large amount of water vapor generated during bathing and the odors and chemical components contained therein are absorbed by the 130 m 3 / h, the absolute humidity and relative humidity of the air in the bathroom are lower than that of the air in the bathroom. 3 / h and the air circulating in the exhaust duct A265 converge, mix, and dilute in the main body (confluence chamber) 292, and then flow into the exhaust duct A265. As a result, the relative humidity of the air passing through the exhaust duct A265 drops to 90% or less, and the temperature difference between the temperature around the exhaust duct A265, which is installed in an insulated space, and the temperature of the air passing through is 5K or less, so condensation is unlikely to occur inside the exhaust duct A265. If a clothes drying rod is installed in the bathroom 6, laundry is hung on it, and the dryer is set to the above-mentioned post-bath operation mode, the clothes are exposed to conditioned air with a lower relative or absolute humidity than the indoor air. Therefore, the exhaust of water vapor and other substances allows the clothes to dry more quickly and reliably than simply drying them indoors. Furthermore, approximately 70% of the total heat supplied for drying the clothes can be recovered.

[0059] In this embodiment, the ventilation and exhaust unit 261 installed in the washroom 7 and the main body (junction chamber) 292 of the ventilation and exhaust unit 260 in the bathroom 6 are connected by an exhaust duct A266. However, a duct (not shown) may be used to connect the main body 292 to each ventilation and exhaust unit (not shown) installed in a toilet (not shown), shoe closet (not shown), walking closet (not shown), storeroom (not shown), or kitchen (not shown), or a duct may be used to connect two locations, such as the washroom and the toilet. Because the bathroom 6 and the washroom 7 are usually adjacent rooms, if water vapor or the like leaks from the bathroom 6 through a door or the like between them, connecting the ventilation and exhaust port 260 of the bathroom 6 and the ventilation and exhaust port 261 of the washroom 7 is rational because it allows the water vapor or the like from both the bathroom 6 and the washroom 7 to be exhausted together. In addition, the air in the bathroom 6, which contains a lot of water vapor, etc., is mixed with and diluted by the air from other rooms that have lower relative and absolute humidity than the bathroom 6. Therefore, the greater the total ventilation air volume of the other rooms compared to the ventilation air volume of the bathroom 6, the greater the effect, so the other rooms should be selected with this in mind.

[0060] In this embodiment, the main body (junction chamber) 292 is installed above the ceiling of the bathroom 6, and the exhaust louvers 290 of the ventilation / exhaust unit 260 of the bathroom 6 are connected to the main body (junction chamber) 292 so that air flows directly through them. However, the main body (junction chamber) 292 may also be installed above the ceiling of the bathroom 6, or above the ceiling of a sanitary area such as the toilet 8 or washroom 7, a storeroom (not shown), or a kitchen (not shown), and the exhaust louvers 290 of the ventilation / exhaust unit 260 of the bathroom 6 and the main body (junction chamber) 292 may be connected by a duct (not shown). Also, the outlet (not shown) of a ventilation fan (not shown) with a blower installed in the bathroom 6, the toilet 8, the washroom 7, the storeroom (not shown), or the kitchen (not shown) may be connected by a duct (not shown). Furthermore, the main body (confluence chamber) 292 may be installed on the ceiling of the toilet 8, washroom 7, storeroom (not shown), or kitchen (not shown) instead of the bathroom 6, and each ventilation exhaust section may be connected to the main body (confluence chamber) 292 by a duct, allowing direct air flow. However, if the main body (confluence chamber) and the ventilation exhaust section of the bathroom 6 are connected by a duct, there is a high possibility of condensation forming inside the duct. Therefore, the duct should be moisture-resistant and water-resistant, and consideration should be given to its installation, such as providing an inspection hatch, to facilitate maintenance such as cleaning the inside of the duct or replacing the duct if condensation forms inside the duct and mold or other growth occurs.

[0061] As a result, the mixture of conditioned air and bathroom 6 air merges with air from other rooms, such as so-called sanitary areas like toilet 8 and washroom 7, in main body (merging chamber) 292, which has a larger internal volume than a normal branch duct. As a result, the ratio of odor and humidity to the merged air is further reduced, reducing the possibility of condensation in the duct leading to heat exchange ventilation unit 50 after the merger. This further reduces condensation on the heat exchange elements, preventing their lifespan from being shortened, and preventing mold from growing in bathroom 6. This results in air conditioning and ventilation system 202 that is energy-efficient and provides comfortable, clean air. In addition, since the conditioned air is blown directly into the bathroom 6, the bathroom 6 dries quickly after bathing, and clothes can also be dried by hanging them out to dry in the bathroom 6. Furthermore, if the other room is a washroom 7 connected to the bathroom 6 by a door, when the door 100 of the bathroom 6 is opened after bathing and moisture or the like leaks into the washroom 7, the bathroom 6 and the washroom 7 are ventilated as one, so that the moisture or the like can be quickly discharged and the occurrence of mold or the like in the washroom 7 can be prevented. Furthermore, since the exhaust duct A266 connects the ventilation exhaust sections 260, 261 between the bathroom 6 and the washroom 7, which is the room next door to the bathroom 6, it is significantly shorter than the exhaust duct to the heat exchange ventilation unit 50, and there is no need to run a long exhaust duct, improving workability.

[0062] (Fourth embodiment) FIG. 10 is a cross-sectional view of a bathroom and a washroom in accordance with the fourth embodiment of the present invention. This embodiment 4 differs from embodiment 3 in the configuration of the ventilation and exhaust section 360 of the bathroom 6, and as a result, the operation and effect are different. Below, only the parts that differ from embodiment 3 will be explained; parts that are not explained are basically the same as embodiment 3. The ventilation exhaust section 360 of the bathroom 6 has a ventilation fan 361 inside the main body 392, which consists of a sirocco fan (not shown), a DC motor (not shown), and an electrical unit (not shown), and is connected to an external switch (not shown) that can operate / stop the ventilation fan 361 and adjust the airflow volume. Therefore, even if the airflow rate of heat exchange ventilation unit 50 is not adjusted, adjusting the airflow rate of ventilation fan 361 with an external switch will cause the motor (not shown) of ventilation fan 361 to rotate to achieve the set airflow rate. Air from bathroom 6 at the set airflow rate is drawn into main body 392 through exhaust louvers 390 of bathroom 6 ventilation exhaust section 360, and air from washroom 7 at the set airflow rate is drawn into main body 392 from washroom 7 ventilation exhaust section 261 through exhaust duct A266, where they merge and mix. The combined air at the set airflow rate passes through ventilation fan 361, passes through a duct adapter (not shown), exhaust duct A265, junction 270, and exhaust duct B71, and is forced into heat exchange ventilation unit 50. Ventilation fan 361 is a sirocco fan that is resistant to static pressure and uses a DC motor. Therefore, the rotation speed is adjusted to achieve the set air volume, and the air at the set air volume passes through the heat exchange element 51 of the heat exchange ventilation unit 50 regardless of the setting of the exhaust fan (not shown), and is then discharged outside. However, if the air volume of the heat exchange ventilation unit 50 is not adjusted, the setting of the introduction fan (not shown) will not change, resulting in an unbalanced intake and exhaust air flow to the heat exchange element 51 and a deterioration in the total heat exchange efficiency. Therefore, it is desirable to link the adjustment of the air volume of the heat exchange ventilation unit 50 with the adjustment of the air volume of the ventilation fan 361, as this improves the balance between the intake and exhaust air flow to the heat exchange element 51, maintains the total heat exchange efficiency, and is expected to have the benefits of reduced noise and power consumption due to a decrease in static pressure.

[0063] For example, in normal operation other than during and after bathing, the heat exchange ventilation unit 50 operates at a 24-hour ventilation air volume of 125 m 3 / h, and by setting the external switch, the ventilation fan 361 of the ventilation exhaust part 360 of the bathroom 6 is set to about 95 m 3 / h, the air volume in bathroom 6 is 65 m3 and the air volume in bathroom 7 is 30 m3. 3 / h combined air flow of approximately 95 m 3 / h enters the heat exchange ventilation unit 50 from the main body 392 of the ventilation / exhaust section 360, so the same effect as in the third embodiment can be expected. Then, when the ventilation fan 361 is stopped by an external switch before taking a bath, the resistance of the ventilation fan 361 causes the heat exchange ventilation unit 50 to continue ventilation operation 24 hours a day, and even without the damper 295, almost no air is exhausted from the bathroom 6, and the exhaust air speed is close to zero, preventing the feeling of cold air while bathing.

[0064] However, in this case, the air in the washroom 7 is hardly exhausted, even though it is for a short time, so the 24-hour ventilation air volume of the entire building 1, 125 m 3 / h. To achieve this, toilets must be installed 8 to 125m away. 3 To ensure a ventilation airflow rate of 100 sq. m / h, it is desirable to appropriately adjust the opening area of ​​the ventilation exhaust section 62 and the inner diameter and length of the exhaust duct A67, or to provide a ventilation exhaust section in a sanitary area other than the toilet 8 and connect the exhaust duct to the heat exchange ventilation unit. Alternatively, a damper 295 may be provided in the ventilation exhaust section 360, as shown in FIG. 10.

[0065] After bathing, the external switch is set to turn on the ventilation fan 361 for about 190 m 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 If you drive at 1 / h, it is about 130m from Bathroom 6. 3 / h of air is discharged, so the same effect as in the third embodiment can be expected. In addition, when drying clothes in bathroom 6, the ventilation fan 361 can be set to approximately 300 m 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the strong setting of 200 m / h by using a switch (not shown). 3 / h, the ventilation air volume and the airflow volume of the bathroom 6 are about 200 m 3 / h, which allows clothes to dry more quickly and reliably. Since the wind speed and absolute humidity of the air that directly hits the clothes are important for clothes drying, the same air intake section 22 can send out about 1.5 times the air volume and wind speed, and the water vapor evaporated by drying clothes can also be exhausted with 1.5 times the ventilation air volume. In this case, 3 / h of air is also exhausted from the ventilation exhaust section 261, so the air blower (not shown) connected to the air intake section 298 is set to 100 m 3 When operated at / h, clothes hung out to dry in bathroom 7 can be dried quickly and reliably. As described above, the ventilation air volume of the bathroom 6 or the ventilation air volume of the bathroom 6 and other rooms can be changed, so that the ventilation air volume can be increased and accelerated when drying the bathroom or clothes, and the ventilation air volume can be minimized when taking a bath, reducing the feeling of cold air.

[0066] (Embodiment 5) FIG. 11 is a cross-sectional view of a bathroom and a washroom in accordance with the fifth embodiment of the present invention. This embodiment 5 differs from embodiment 4 in the configuration of the ventilation exhaust section 460 of the bathroom 6, and as a result, the operation and effect are different. Below, only the parts that differ from embodiment 4 will be explained, and the parts that are not explained are basically the same as embodiment 4. The ventilation and exhaust section 460 of the bathroom 6 has, within the main body 492, a heating section 497 that heats the air in the bathroom 6, a circulation fan 496 that draws in air from the bathroom 6 and blows the heated air out into the bathroom 6, and an electrical section (not shown). The heating unit 497 may be an electric heater, a hot water coil with hot water flowing inside, or a condenser with a refrigerant flowing inside. In the case of a hot water coil, it is connected to a gas water heater or the like that produces and circulates hot water, and in the case of a condenser, it is connected to a so-called heat pump outdoor unit. The main body 492 has a ventilation fan 461 consisting of a sirocco fan (not shown), a DC motor (not shown), and an electrical component (not shown), and is connected to an external switch (not shown) that can operate / stop and adjust the airflow rate of the ventilation fan 461, operate / stop and adjust the airflow rate of the circulation fan 496, and turn the heating unit 497 on / off. In addition, opening 491 of exhaust louver 490 exposed on the ceiling side of bathroom 6 faces both the ventilation fan 461 and the suction part (not shown) of circulation fan 496, and downstream of opening 491 is provided filter 494 that can be removed from the bathroom 6 side to enable maintenance. A damper 495 capable of opening and closing the air flow is provided upstream of the ventilation fan 461 and downstream of the filter 494, and can be electrically opened and closed by an external switch (not shown).

[0067] In the above configuration, during normal operation other than during and after bathing, the heat exchange ventilation unit 50 operates at a 24-hour ventilation air volume of 125 m 3 / h, and by setting the external switch, the ventilation fan 461 of the ventilation exhaust part 460 of the bathroom 6 is set to about 95 m 3 / h, the air volume in bathroom 6 is 65 m3 and the air volume in bathroom 7 is 30 m3. 3 / h combined air flow of approximately 95 m 3 / h enters the heat exchange ventilation unit 50 from the main body 492 of the ventilation / exhaust section 460, so the same effect as in the fourth embodiment can be expected. Before taking a bath, an external switch (not shown) provided outside bathroom 6 electrically closes damper 495 of ventilation exhaust part 460 of bathroom 6 using a motor (not shown). As a result, even if heat exchange ventilation unit 50 operates at the ventilation air volume 24 hours a day, no air is exhausted from ventilation exhaust section 460, preventing the feeling of cold air caused by the exhaust air speed while bathing. Naturally, the feeling of cold air is also prevented by not operating the air blower section of bathroom 6. However, if the bathroom becomes very hot in the summer, damper 495 can be opened to exhaust air. Even when the damper 495 is closed, the heat exchange ventilation unit 50 operates at a 24-hour ventilation air volume and the ventilation fan 461 operates at a volume of approximately 95 m 3 / h, the ventilation exhaust 261 of bathroom 7 is 50m away. 3 / h, 50m from the ventilation exhaust 62 of toilet 8 3 / h of air containing odors, humidity, and CO2 is exhausted, and the entire building 1 is exhausted for 100m 3 / h ventilation air volume is ensured.

[0068] After bathing, the damper 495 is opened by an external switch (not shown), and the ventilation fan 461 is turned on at a speed of about 190 m / s by setting the external switch. 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 If you drive at 1 / h, it is about 130m from Bathroom 6. 3 / h of air is discharged, so the same effect as in the fourth embodiment can be expected. Furthermore, when drying clothes in bathroom 6, the ventilation fan 461 can be set to a speed of approximately 300 m 3 / h air volume setting, and the heat exchange ventilation unit 50 is set to the strong notch at 250m 3 / h, and at the same time, the air blower for bathroom 6 is set to the strong setting of 200 m / h by using a switch (not shown). 3 / h, and by setting the external switch, the heating section 497 of the ventilation exhaust section 460 is turned on, and the circulation fan 496 is turned on at 200 m 3 Even if the air volume setting of the heat exchange ventilation unit 50 does not change, the ventilation air volume and the air supply volume of the bathroom 6 are about 200 m 3 / h. 200 m3 of air from bathroom 6 is drawn in through opening 491 of exhaust louver 490 of ventilation exhaust section 460 by circulation fan 496. 3 / h is heated by the heater 497 and blown out onto the clothes hung out to dry in the bathroom 6, so clothes can be dried more quickly and reliably. 3 / h of air is also exhausted from the ventilation exhaust section 261, so the air blower (not shown) connected to the air intake section 298 is set to 100 m 3 When operated at / h, clothes hung out to dry in bathroom 7 can be dried quickly and reliably. As a result, heated air can be circulated in the bathroom 6, which can speed up the effects of drying the bathroom or clothes, and by closing the damper 495 when taking a bath, the feeling of cold air can be eliminated. It can also recover heat from the heated circulating air in the bathroom.

[0069] (Sixth embodiment) FIG. 12 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to the sixth embodiment of the present invention. This embodiment 6 differs from embodiment 1 in the configuration of the bathroom 6, etc., and as a result, the operation and effects are different. Below, only the parts that differ from embodiment 1 will be explained, and the parts that are not explained are basically the same as embodiment 1. As shown in the figure, an air conditioning ventilation system 502 is installed in a building 1, which is a highly airtight and highly insulated house. Near the center of the ceiling of bathroom 6, bathroom air supply section 522 is provided, which blows out conditioned air produced by air conditioning unit 15. Below bathroom air supply section 522, a clothes drying rod 590 for drying clothes is provided. There is a door (not shown) between the bathroom 6 and the adjacent washroom (room B) 7, and below the door there is an openable / closable ventilation opening (opening to the adjacent room) 585. In bathroom 6, a wall (not shown) facing ventilation opening 585 and in contact with the outside is provided with an openable and highly airtight and heat-insulating window (outdoor opening) 587. Air blowing section 18 and bathroom air supply section 522 are connected in a one-to-one-to-one relationship by duct 532 .

[0070] Ventilation exhaust sections 561 and 62 such as exhaust grilles that exhaust air from each room are provided on the ceilings of the washroom (room B) 7 and toilet (room B) 8 in building 1, and are connected to exhaust ducts A566 and 67, respectively. Exhaust ducts A566 and 67 are connected to exhaust duct B71 at a junction 570, and exhaust duct B71 is connected to the heat exchange ventilation unit 50. As a result, indoor air passes from the ventilation exhaust section 561 and other sections through the exhaust duct A566 and other sections, the confluence section 570, and the exhaust duct B71, where all heat is recovered by the heat exchange ventilation unit 50, and then passes through the exhaust duct C76 and is exhausted outside from the outdoor exhaust hood A75. The indoor air exhaust path is formed between the ventilation exhaust section 561 etc. and the outdoor exhaust hood A75, and is formed by the exhaust duct A566 etc., the junction section 570, the exhaust duct B71, the heat exchange ventilation unit 50, and the exhaust duct C76. The washroom (room B) 7 and toilet (room B) 8 are provided with ventilation air intake sections 586, 87 such as door undercuts that draw some of the return air into each room using a heat exchange ventilation unit 50, and are connected to a return air duct (not shown), which is an air path that returns to the air conditioning unit (return section) 15 from the washroom 7, corridor (not shown), entrance 10, staircase landing 11, etc. Exhaust ducts A566, 67 and exhaust duct B71 are exhaust ducts installed in the insulated space between the ventilation and exhaust sections 561, 62 and the heat exchange air unit 50. Therefore, to prevent dust and moisture from passing through the duct and accumulating or being absorbed inside the duct, they are non-insulated ducts made solely of polypropylene ducts and do not have any insulating material or nonwoven fabric inside the duct.

[0071] FIG. 13 is a cross-sectional view of a bathroom and a washroom in accordance with the sixth embodiment of the present invention, and FIG. 14 is a perspective view of the bathroom in accordance with the sixth embodiment of the present invention. Bathroom 6 and washroom (room B) 7 are located on the first floor of building 1, and washroom 7 is connected to entrance 10 by door 540, with the ventilation air intake section being an undercut 586 of the door. Bathroom 6 is connected to washroom 7 by door 541, and below door 541 there is provided an openable / closable ventilation opening (opening to the adjacent room) 585. In bathroom 6, a wall (not shown) facing ventilation opening 585 and in contact with the outside is provided with an openable and highly airtight and heat-insulating window (outdoor opening) 587. A bathroom air supply section 522 that blows out conditioned air produced by air conditioning unit 15 is provided in the center of ceiling 510 of bathroom 6. A ventilation exhaust section 561 such as an exhaust louver is provided on the ceiling of the washroom (room B) 7 to exhaust air from each room.

[0072] Bathroom air supply section 522 consists of grill 525, main body 526, duct adapter 527, and two airflow direction change plates 528, with main body 526 and other components being elongated in the depth direction of bathroom 6. Conditioned air from duct 532 connected to duct adapter 527 above the ceiling of bathroom 6 passes through main body 526 and is blown out into bathroom 6 from grill 525 installed on the ceiling of bathroom 6 along two airflow direction change plates 528, which can manually or automatically change the airflow direction of the conditioned air from 30° to 90° (straight down). One of airflow direction change plates 528 is normally set at approximately 45° toward left wall 512, and the other at approximately 45° toward right wall 511. Openable ventilation port (opening to adjacent room) 585 consists of an opening hole 591, a manual shutter (not shown), and an opening / closing knob 592, and is provided below each of the two doors 541. When ventilation port 585 is open, it is opened to allow air to flow at a wind speed of 1 m / s or less, and when closed, it is closed to limit leakage to 10% or less. The window (exterior opening) 587 is a sliding window with a resin frame and high thermal insulation and airtightness such as triple glass. In bathroom 6, bathroom air supply section 522 is provided in the center of the left and right sides of ceiling 510, ventilation opening 585 is provided below door 541 on right wall 511, and window 587 is provided on left wall 512. Below bathroom air supply section 522, a clothes drying rod 590 for drying clothes is provided.

[0073] In the above configuration, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the air blowing unit (not shown) that blows air to the bathroom air supply unit 522 in the bathroom 6 is stopped and the bathroom 6 is not air-conditioned. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed. The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. In the above operating state, some of the return air, which has a comfortable temperature and humidity and good air quality after air-conditioning the room or space, flows into the entrance 10, staircase landing 11, corridor (not shown), etc., and through the heat exchange ventilation unit 50, flows into the washroom 7 from the ventilation air supply section 586 of the washroom 7, and then flows into the toilet 8 from the ventilation air supply section 87 of the toilet 8. The air from toilet 8 and the return air flowing in are combined and flow for approximately 60 m. 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust 62. Therefore, the air containing moisture and odor generated in the toilet 8 and the CO2 in the return air are mainly exhausted to the outside, and in its place, return air with a comfortable temperature and humidity and good air quality flows into the toilet 8. The air D from washroom 7 and the return air that has flowed in join together and travel about 65 m 3 / h of air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 61. Therefore, the moisture leaking from the bathroom 6 into the washroom 7, the air containing the moisture and odor generated in the washroom 7, and the CO2 in the return air are mainly exhausted to the outdoors, and to replace them, return air with a comfortable temperature and humidity and good air quality flows into the washroom 7. In other words, the heat exchange ventilation unit 50 ventilates 125 m3 of air containing moisture, odors, and CO2 from the washroom 7, etc. 3 / h of air is exhausted, and 125m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1.

[0074] In the building 1, if the bathroom 6 is small and well insulated, the air conditioning load is small, and even if it is air-conditioned, the power consumption will hardly change. Therefore, if the bathroom 6 becomes very hot in the summer, or if you want to keep the bathroom 6 comfortable at all times, or if you want to actively air-condition the bathroom 6 for drying the bathroom and clothes, etc., be careful of the feeling of cold air while bathing, and set the airflow volume of the air blower to the weak notch of 55 m 3 / h, and conditioned air may be blown into bathroom 6. In this case, however, ventilation opening (opening to adjacent room) 585 must be opened, and mixed bathroom air, which is a mixture of the conditioned air in bathroom 6 and air C in bathroom 6, flows from ventilation opening 585 into washroom 7, which is an adjacent room, as if being pushed out by the conditioned air. Therefore, during bathing, the airflow rate of heat exchange ventilation unit 50 is set to the middle notch of 180 m / h so that the mixed bathroom air containing a lot of water vapor immediately after bathing does not stagnate in washroom 7 and does not flow back through ventilation air supply opening 596 and flow into entrance 10, etc. 3 / h, the mixed air in the bathroom joins with air D in the washroom 7, and the air 3 / h of combined air must enter heat exchange ventilation unit 50 through ventilation exhaust section 61 of washroom 7. Alternatively, window 587 may be opened slightly to allow the bathroom mixed air in bathroom 6 to flow outside so that it is pushed out by the conditioned air. In this case, however, heat recovery from the bathroom mixed air in bathroom 6 is not possible, so it is best to keep the period short to save energy.

[0075] The following explains how to operate the device during and after bathing. During bathing, as in normal operation other than the above-mentioned bathing, bathroom drying operation after bathing, and clothes drying operation in bathroom 6, the air blower (not shown) that blows air to bathroom air supply section 522 in bathroom 6 is stopped and bathroom 6 is not air-conditioned. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed. As a result, even when heat exchange ventilation unit 50 operates at a 24-hour ventilation air volume, no air is exhausted from ventilation opening 585, preventing the feeling of cold air caused by the exhaust air speed while bathing. In addition, outside air does not flow in through window 687, keeping the temperature in the bathroom stable. Naturally, not operating the ventilation unit for bathroom 6 also prevents the feeling of cold air. This is because the air blown out from bathroom air supply unit 522 is conditioned air with a maximum temperature difference of approximately 5 K when cooling and approximately 10 K when heating compared to room temperature, and because the temperature difference is only 1 to 2 K when stable, it can feel like cold air if it hits the body directly while bathing, even when heating. However, if the bathroom becomes very hot in the summer, please follow the instructions above.

[0076] There are two ways to operate the water heater after bathing, depending on the temperature and humidity of the outdoor air. In winter or during the interim seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, the heat generated by bathing and the large amount of water vapor cause the temperature of the outdoor air to rise above the room air temperature, with an absolute humidity of approximately 30 g / kg and a relative humidity of 100%. Air C in the bathroom 6 is then exhausted, and conditioned air with a lower absolute humidity and relative humidity than the air C in the bathroom 6 is supplied, drying the bathroom 6 while exchanging all the heat of the air C in the bathroom 6 with outdoor air, recovering all the heat, and introducing it into the room, etc. Therefore, the ventilation port 585 is opened by the opening / closing knob 592, and the heat exchange ventilation unit 50 is set to the strong notch of 250 m by the switch (not shown). 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 125 m 3 Drive at / h.

[0077] 13, conditioned air discharged from bathroom 6 along air discharge direction change plate 528 of bathroom air supply section 522 flows diagonally downward to the right, toward the center, and toward the left and right. Because window 587 is closed, discharged airflow 515 discharged diagonally downward to the left flows along window 587 and left wall 512, drawing in surrounding air, before reaching bathtub 513 and floor 514. Because air vent 585 is open and heat exchange ventilation unit 50 is operating at the strong notch, discharged airflow 515 discharged diagonally downward to the left flows toward air vent 585 toward right wall 511 (dash-dotted arrow). Similarly, discharged airflow 515 discharged toward the center and toward the right and downward flows toward air vent 585, drawing in surrounding air (dash-dotted arrow). The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then cooled to 125 m 3 / h of blown-out airflow 515 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%.

[0078] And 125m3 The mixed air in the bathroom at 65 m / h passes through the ventilation opening 585 and becomes the inflow airflow (arrowed dashed line) 516 that flows into the adjacent bathroom 7, so the absolute humidity of the air C in the bathroom 6 decreases. 3 / h return air and air D from washroom 7 are combined, and the relative humidity drops further to about 190m 3 / h of combined air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 561.

[0079] Although the absolute humidity of the incoming airflow 516 is high, by merging and mixing with the return air, which has an absolute humidity and relative humidity close to that of the air-conditioned air, and the air D in the washroom 7, the relative humidity quickly drops to around 90% to 80%, and the room temperature of the washroom 7 and the surrounding area is close to the temperature of the air-conditioned air due to the air-conditioning ventilation system 502, so there is little possibility of condensation forming in the washroom 7. Even if condensation does form, the absolute humidity of the incoming airflow 516 drops in a short time, so the condensation will dry naturally. In addition, since water is often handled in the washroom 7 and the floor is made of highly water-resistant flooring materials, problems such as corrosion will not occur even if condensation occurs and the floor gets wet. If condensation temporarily forms around the ventilation opening 585, it is possible to dry it quickly by increasing the air volume of the heat exchange ventilation unit 50, and by increasing the air volume of the return air flowing in from the ventilation air intake opening 586 of the washroom 7 and the combined air exhausted from the ventilation exhaust section 561. In addition, the large amount of water vapor generated during bathing, as well as the odors and chemical components contained therein, are exhausted to the outside of the room by the heat exchange ventilation unit 50 through the vent 585 and the ventilation exhaust section 561 of the washroom 7.

[0080] In addition, moisture condensed on the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. of bathroom 6 evaporates due to blown air current 515 flowing along them, drying the inside of bathroom 6. Generally, the evaporation rate of water due to air movement above the water surface is Y (kg / m 2 s) is the saturated vapor amount on the water surface, Xw (kg / m 3 ), the amount of water vapor in the air above the water surface, Xa (kg / m 3), where V (m / s) is the speed of air movement above the water surface, then Y = K·V(Xw-Xa), which is proportional to the speed of movement. When this is applied to the interior surfaces of bathroom 6, the amount of water that condenses on the interior surfaces that evaporates increases in proportion to the wind speed of the conditioned air. Therefore, in order to evaporate and dry as quickly as possible, it is best to increase the airflow rate of the conditioned air and the ventilation airflow rate of the heat exchange ventilation unit and adjust the direction of the airflow so that the conditioned air flows quickly over the surfaces of the walls, etc.

[0081] In this embodiment, the air volume can be adjusted by fan 18, the ventilation air volume by heat exchange air unit 50, and the blowing direction by two blowing direction changing plates 528 of bathroom air supply section 522. A filter (not shown) may be provided in the ventilation opening 585. As the air passes through the filter, dust and large amounts of water vapor adhere to the filter. This removes the water vapor from the exhausted air, as well as the chemical components and odors contained therein, and the exhausted air flows into the washroom 7, lowering the relative humidity of the incoming airflow 516 to approximately 90% to 80%. This further reduces the likelihood of condensation occurring in the washroom 7. The size, thickness, area, material, etc. of the filter mesh can be changed appropriately to optimal specifications depending on the amount of air passing through, the dust and water vapor contained in it, and the chemical components contained therein. In addition, since the filter is removable from the ventilation opening 585, if a large amount of dust, water vapor, or the chemical components contained therein adheres to the filter, it can be removed and cleaned to maintain performance.

[0082] Then, from the bathroom air supply section 522, conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air in the bathroom 6 is blown into the bathroom 6 when stable, and hits the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the aforementioned ventilation opening 585. In particular, if a user who prefers a Japanese-style home has the bathtub 513 and the entire bathroom 6 made of wood such as cypress, in order to prevent the wood from deforming, rotting, growing mold, and producing unpleasant odors due to the growth of bacteria due to sudden changes in temperature and humidity, the ideal way to dry the bathroom after bathing is to blow dry air at a temperature with little difference from the room temperature of the bathroom 6, and with low absolute and relative humidity, onto the walls of the bathtub and bathroom 6 for a long period of time, and then exhaust the evaporated water vapor and other substances along with the air.This embodiment minimizes deterioration and corrosion even after many years of use, and can maintain the appearance and atmosphere of when the bathroom was new.

[0083] 190m from Washroom 7 through ventilation exhaust duct A566 from Washroom 7 3 The exhaust air of 60m / h has a relative humidity of about 90 to 80%, and the exhaust air duct A566 passes through an insulated space, so there is little possibility of condensation in the exhaust air duct A566. 3 / h exhaust gas and the combined 250m 3 The relative humidity of the exhaust air of 1 / h becomes 80% or less, and the exhaust air passes through the exhaust duct B71 and flows into the heat exchange ventilation unit 50. In the heat exchange ventilation unit 50, the combined exhaust gas passes through an element pre-filter (not shown) to remove dust and the like, and is passed through a heat exchange element 51 to produce a purified 250m 3 / h of outdoor air, and is exhausted to the outside through exhaust duct C76 and outdoor exhaust hood A75. Therefore, exhaust gas with a relative humidity of 80% or less from which chemical components have been removed passes through the heat exchange element 51, which reduces condensation and adhesion of chemical components to the heat exchange element 51 and prevents deterioration and shortening of its lifespan due to this.

[0084] The heat exchange ventilation unit 50 then ventilates the 250m 2 air containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0085] When washed clothes are hung on clothes drying rod 590 in bathroom 6 and the system is set to the post-bath operating state described above, conditioned air with a temperature difference of 1 to 2 K and a lower relative or absolute humidity than the bathroom air when stable is blown out from bathroom air supply section 522 into bathroom 6 and hits the clothes. Therefore, by venting water vapor and the like as described above, clothes can be dried more quickly and reliably than simply drying them indoors, clothes are damaged less than when drying clothes with a bathroom ventilation dryer or the like, and approximately 70% of the total heat supplied for drying clothes can be recovered, resulting in energy savings. The temperature of the conditioned air blown out from bathroom air supply section 522 can be adjusted by about 1 to 5 K, relative to a stable temperature of 1 to 2 K from room temperature, by changing the airflow rate of blower section 18 and the temperature setting of air conditioning section 17. Therefore, if you want to dry clothes more quickly, you can increase the temperature difference to about 5 K only for the conditioned air blown out from bathroom air supply section 522 in bathroom 6, and increase the airflow rate of blower section 18 and the ventilation air rate of heat exchange ventilation unit 50.

[0086] In summer, rainy season, etc., when the temperature of the outdoor air is higher than the comfortable temperature of the room air, or when the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, the heat generated by bathing and the large amount of water vapor make the temperature of the outdoor air higher than the comfortable absolute humidity of the room air, and the air C in the bathroom 6, which has an absolute humidity of about 30 g / kg and a relative humidity of 100%, is exhausted, and conditioned air with a lower absolute humidity and relative humidity than the air C in the bathroom 6 is supplied to dry the bathroom 6. Therefore, the window 587 is opened by about 5 cm to 10 cm, and the air blower of the bathroom 6 is set to the middle notch of 125 m using a switch (not shown). 3 Drive at / h. The degree of opening of the window 587 may be adjusted so that the air speed passing through the open portion is 1 m / s or less, and may be adjusted by adjusting the amount of conditioned air blown.

[0087] 13, conditioned air blown out along airflow direction-changing plate 528 of bathroom air supply section 522 flows in the depth direction of bathroom 6, blowing out diagonally downward to the right, toward the center, and toward the left and right. Because air vent 585 is closed, airflow 515 blown out diagonally downward to the right draws in surrounding air, and flows along right wall 511 to reach floor 514. Because window 587 is open, airflow 515 blown out diagonally downward to the right flows toward window 587 in the direction of left wall 512 (dotted arrow), and airflow 515 blown out toward the center and diagonally downward to the left also draws in surrounding air and flows toward window 587 (dotted arrow).

[0088] The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then cooled to 125 m 3 / h of blown-out airflow 515 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 125m 3 / h of mixed air in the bathroom passes through window 587 and becomes outflow airflow (dotted arrow) 517 to the outside, so the absolute humidity of air C in bathroom 6 decreases. In addition, the large amount of steam generated during bathing, along with the odors and chemical components contained therein, is exhausted to the outside through window 587. And because the mixed air in the bathroom does not flow into the heat exchange ventilation unit 50, the outdoor air with an uncomfortable high temperature or high absolute humidity exchanges heat with the comfortable room air, bringing the temperature and absolute humidity closer to the comfortable room air, and fresh outdoor air can be supplied to the room, reducing the air conditioning load and achieving greater energy savings. Then, from the bathroom air supply section 522, an airflow 515 of conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air C in the bathroom 6 is blown into the bathroom 6 at stable times, hitting the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the window 587 mentioned above. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0089] When washed clothes are hung on clothes drying rod 590 in bathroom 6 and the system is set to the post-bath operating state described above, conditioned air with a stable temperature difference of 1 to 2 K and a low relative or absolute humidity compared to the bathroom air is blown out from bathroom air supply section 522 into bathroom 6 and hits the clothes. Therefore, the exhaust of water vapor and the like from window 517 allows clothes to dry more quickly and reliably than simply drying them indoors. However, since heat cannot be recovered by the heat exchange ventilation unit 50, it is best to perform this for a short time when necessary, such as on rainy days in summer.

[0090] This embodiment is described assuming a Japanese home with a separate room layout that includes a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a changing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet found in homes overseas. For example, a bathroom air intake unit that blows conditioned air into the bathroom is installed above the shower and bathtub in the bathroom, a ventilation exhaust unit corresponding to the bathroom's ventilation exhaust unit is installed above the toilet and sink in the bathroom, a window or the like is installed on the shower and bathtub side, and an opening / closing shutter is installed at the intake port of the ventilation exhaust unit. It is conceivable that the window is normally closed to exhaust air through the ventilation exhaust unit, and in summer, the opening / closing shutter of the ventilation exhaust unit is closed and the window is opened to exhaust air through the window, and the same effect can be achieved by these actions.

[0091] As described above, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the fresh outdoor air and the return air of the conditioned air from the heat exchange ventilation unit 50 are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit 17 and the room temperature by the air conditioning section 17 and the blower section 18 in the air conditioning unit 15, which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown out into bathroom 6, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity.

[0092] Then, by closing window 587 in bathroom 6 and opening vent 585, the mixed air in the bathroom is allowed to flow into the adjacent washroom 7, where it flows through washroom 7's ventilation exhaust section 561 into heat exchange air unit 50, where it exchanges heat with outdoor air and is then discharged outdoors, recovering heat during bathing and quickly lowering the absolute humidity in the bathroom. As the mixed air in the bathroom with a reduced relative humidity passes through the duct and heat exchange element, condensation on the duct and heat exchange element is reduced, preventing a shortened lifespan of the heat exchange element and preventing mold in bathroom 6. After bathing, in summer, rainy season, or the like, if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, opening window 587 and closing vent 585 will exhaust the mixed air from the bathroom to the outside, quickly reducing the absolute humidity in bathroom 6, preventing mold from growing in the bathroom, and supplying outdoor air at a comfortable temperature and humidity after heat exchange. Thus, air-conditioning and ventilation system 502 is obtained that is energy-efficient, provides comfortable, and clean air. In addition, because conditioned air is blown directly into the bathroom 6, the bathroom 6 dries faster after a bath, and clothes can be dried by hanging them out to dry in the bathroom 6. Heat can also be recovered when air-conditioning the bathroom 6, drying the bathroom, and drying clothes. Therefore, further energy savings can be achieved by recovering the heat from the conditioned air supplied to the bathroom 6 almost all year round.

[0093] (Embodiment 7) FIG. 15 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to the seventh embodiment of the present invention. This embodiment 7 differs from embodiment 6 in the configuration of the bathroom 6, etc., and as a result, the operation and effects are different. Below, only the parts that differ from embodiment 6 will be explained, and the parts that are not explained are basically the same as embodiment 6. As shown in the figure, an air conditioning ventilation system 602 is installed in a building 1, which is a highly airtight and highly insulated house. Near the center of the ceiling of bathroom 6, two bathroom air supply sections 622, 623 that blow out conditioned air produced by air conditioning unit 15 are provided. Below the bathroom air supply sections 622 and 623, there are clothes drying rods 690 for drying clothes. There is a door (not shown) between the bathroom 6 and the adjacent washroom (room B) 7, and below the door there is an openable / closable ventilation opening (opening to the adjacent room) 585. In bathroom 6, a wall (not shown) facing ventilation opening 585 and in contact with the outside is provided with an openable and highly airtight and heat-insulating window (outdoor opening) 587. Air blowing section 18 and bathroom air supply sections 622, 623 are connected in a one-to-one-to-one relationship by ducts 632, 633, respectively.

[0094] FIG. 16 is a cross-sectional view of a bathroom and a washroom in accordance with the seventh embodiment of the present invention, and FIG. 17 is a perspective view of the bathroom in accordance with the seventh embodiment of the present invention. Bathroom air supply units 622, 623 each consist of a grill 625, a main body 626, a duct adapter 627, and an airflow direction change plate (not shown), with main body 626 and other components being elongated in the depth direction of bathroom 6, and conditioned air from ducts 632, 633 connected to duct adapter 627 above the ceiling of bathroom 6 passes through main body 626 and is blown into bathroom 6 from grill 625 installed on the ceiling of bathroom 6 along an airflow direction change plate that can be manually or automatically changed to change the airflow direction from 30° to 150°. The airflow direction change plate is normally set to 90° (straight down). In the bathroom 6, bathroom air supply sections 622, 623 are provided symmetrically on the left and right sides of the center of the ceiling 510, a ventilation opening 585 is provided below the door 541 on the right wall 511, and a window 587 is provided on the left wall 512. Therefore, bathroom air intake section 622 is located near window 587, bathroom air intake section 623 is located near ventilation opening 585, and below and between bathroom air intake sections 622 and 623, clothes drying rods 690 for drying clothes are provided.

[0095] In the above configuration, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the air blowing unit (not shown) that blows air to the bathroom air supply units 622 and 623 in the bathroom 6 is stopped and the bathroom 6 is not air-conditioned. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed.

[0096] If bathroom 6 in building 1 is small and well insulated, the air conditioning load will be small, and even if it is air-conditioned, the power consumption will be almost the same. Therefore, if it gets very hot in the summer, or if you want to keep bathroom 6 comfortable at all times, or if you want to actively air-condition bathroom 6 for drying the bathroom, clothes, etc., be careful of the feeling of cold air while bathing, and set the air volume to the weak notch of 55 m for one or both of bathroom air supply units 622 and 623. 3 / h, and conditioned air may be blown into bathroom 6. In this case, however, ventilation opening (opening to adjacent room) 585 must be opened, and mixed bathroom air, which is a mixture of the conditioned air in bathroom 6 and air C in bathroom 6, flows from ventilation opening 585 into washroom 7, which is an adjacent room, as if being pushed out by the conditioned air. Therefore, during bathing, the airflow rate of heat exchange ventilation unit 50 is set to the middle notch of 180 m / h so that the mixed bathroom air containing a lot of water vapor immediately after bathing does not stagnate in washroom 7 and does not flow back through ventilation air supply opening 596 and flow into entrance 10, etc. 3 / h, or 235m with a medium-strong notch 3 / h, the mixed air in the bathroom joins with air D in the washroom 7, and the air 3 / h, or approximately 175 m 3 / h of air must enter heat exchange ventilation unit 50 from ventilation exhaust section 61 of washroom 7. Alternatively, window 587 may be opened slightly to allow the mixed bathroom air in bathroom 6 to flow outside so that it is pushed out by the conditioned air. In this case, however, heat cannot be recovered from the mixed bathroom air in bathroom 6, so it is better to keep the period short to save energy.

[0097] The following explains how to operate the device during and after bathing. During bathing, as in normal operation other than the above-mentioned bathing, bathroom drying operation after bathing, and clothes drying operation in bathroom 6, the air blowing unit (not shown) that blows air to bathroom air supply units 622 and 623 in bathroom 6 is stopped and bathroom 6 is not air-conditioned. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed.

[0098] There are two ways to operate the water heater after bathing, depending on the temperature and humidity of the outdoor air. In winter or intermediate seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, the ventilation port 585 is opened by the opening / closing knob 592, and the heat exchange ventilation unit 50 is set to the 325 mm of the extra strong notch by the switch (not shown). 3 / h, and at the same time, the air blowing sections 18 of the bathroom air supply sections 622 and 623 of the bathroom 6 are set to the medium-low notch of 100 m / h by using a switch (not shown). 3 Drive at / h.

[0099] 16, conditioned air blown out along the airflow direction changing plates of bathroom air supply sections 622, 623 flows in the depth direction of bathroom 6, blowing downward toward bathtub 513 and floor 514. Because window 587 is closed, blown out airflow 615 from bathroom air supply section 622 flows along window 587 and left wall 512 while drawing in surrounding air (dash-dotted arrow) and reaches bathtub 513 and floor 514. Because vent 585 is open and heat exchange ventilation unit 50 is operating at the strong notch, the air flows toward vent 585 in the direction of right wall 511 (dash-dotted arrow), and blown out airflow 615 from bathroom air supply section 623 flows toward vent 585 while drawing in air from below (dash-dotted arrow).

[0100] The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then transferred to a total of 200 m 3 / h of blown-out airflow 615 meets, mixes, and dilutes in bathroom 6, resulting in mixed air in the bathroom with a relative humidity reduced to about 85%. And 200m 3 The mixed air in the bathroom at 65 m / h passes through the ventilation opening 585 and becomes the inflow airflow (arrowed dashed line) 616 that flows into the adjacent bathroom 7, so the absolute humidity of the air C in the bathroom 6 decreases. 3 / h return air and air D from washroom 7 are combined, and the relative humidity drops further to approximately 265 m 3 / h of combined air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 561.

[0101] Although the absolute humidity of the incoming airflow 616 is high, by mixing it with the return air, which has an absolute humidity and relative humidity close to that of the conditioned air, and the air D in the washroom 7, the relative humidity quickly drops to about 85% to 75%, and the room temperature of the washroom 7 and the surrounding area is close to the temperature of the conditioned air due to the air conditioning ventilation system 602, so there is little chance of condensation forming in the washroom 7. Even if condensation does form, the absolute humidity of the incoming airflow 616 drops in a short time, so the condensation will dry naturally. In addition, since water is often handled in the washroom 7 and the floor is made of highly water-resistant flooring materials, problems such as corrosion will not occur even if condensation occurs and the floor gets wet. If condensation temporarily forms around the ventilation opening 585, it is possible to dry it quickly by increasing the air volume of the heat exchange ventilation unit 50, and by increasing the air volume of the return air flowing in from the ventilation air intake opening 586 of the washroom 7 and the combined air exhausted from the ventilation exhaust section 561. In addition, the large amount of water vapor generated during bathing, as well as the odors and chemical components contained therein, are exhausted to the outside of the room by the heat exchange ventilation unit 50 through the vent 585 and the ventilation exhaust section 561 of the washroom 7.

[0102] Then, from the bathroom air supply sections 622, 623, conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air in the bathroom 6 is blown into the bathroom 6 when stable, and hits the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the aforementioned ventilation opening 585. In particular, in the case where the bathroom 6 described above is made of wood such as cypress and is large, about 6 tatami mats in size, in this embodiment 7, two bathroom air intake sections 622, 623 are provided, and the placement of the bathroom air intake sections 622, 623 makes it possible to speed up drying of the bathroom after bathing, which is further effective in preventing deformation, corrosion, mold growth, etc. of the cypress.

[0103] 265m from Washroom 7 through ventilation exhaust duct A566 from Washroom 7 3 The exhaust air of 60m / h has a relative humidity of about 85 to 75%, and the exhaust air duct A566 passes through an insulated space, so the possibility of condensation in the exhaust air duct A566 is even lower. 3 / h exhaust and the combined 325m 3 The relative humidity of the exhaust air of 1 / h becomes 75% or less, and the exhaust air passes through the exhaust duct B71 and flows into the heat exchange ventilation unit 50. In the heat exchange ventilation unit 50, the combined exhaust gas passes through an element pre-filter (not shown) to remove dust and the like, and is passed through a heat exchange element 51 to produce a purified 250m 3 / h of outdoor air, and is exhausted to the outside through exhaust duct C76 and outdoor exhaust hood A75. Therefore, exhaust gas with a relative humidity of 75% or less from which chemical components have been removed passes through the heat exchange element 51, which reduces condensation and adhesion of chemical components to the heat exchange element 51 and prevents deterioration and shortening of its lifespan due to this.

[0104] The heat exchange ventilation unit 50 then ventilates the 325m 2 sewage containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 325m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0105] When washed clothes are hung on two clothes drying poles 690 in bathroom 6 and the system is set to the post-bath operating state described above, conditioned air with a stable temperature difference of 1 to 2 K and a low relative or absolute humidity compared to the bathroom air is blown out from bathroom air intake sections 622, 623 into bathroom 6 and hits the clothes. Therefore, the exhaust of water vapor and the like described above allows clothes to dry more quickly and reliably than simply drying them indoors, and approximately 70% of the total heat supplied for drying the clothes can be recovered. The temperature of the conditioned air blown out from bathroom air supply sections 622, 623 can be adjusted by about 1 to 5 K, relative to a stable temperature of 1 to 2 K above room temperature, by changing the airflow rate of blower section 18 and the temperature setting of air conditioning section 17. Therefore, if faster drying of clothes is desired, the temperature difference of only the conditioned air blown out from bathroom air supply sections 622, 623 of bathroom 6 can be increased to about 5 K, and the airflow rate of blower section 18 and the ventilation airflow rate of heat exchange ventilation unit 50 can be increased. Of course, the airflow rate of blower section 18 can also be adjusted so that the air is blown out from one of bathroom air supply sections 622, 623, depending on the amount of clothes to be dried, etc.

[0106] In the summer or rainy season, when the temperature of the outdoor air is higher than the comfortable temperature of the room air, or when the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, open the window 587 by about 5 cm to 15 cm, and use the switch (not shown) to set the air blowing section 18 of the bathroom air supply section 622, 623 of the bathroom 6 to the medium-low notch at 100 m. 3 Drive at / h. The degree of opening of the window 587 may be adjusted so that the air speed passing through the open portion is 1 m / s or less, and may be adjusted by adjusting the amount of conditioned air blown.

[0107] 16, conditioned air blown out along the airflow direction changing plates of bathroom air supply sections 622, 623 flows in the depth direction of bathroom 6, blowing downward toward bathtub 513 and floor 514 of bathroom 6. Because air vent 585 is closed, blown out airflow 615 from bathroom air supply section 623 flows along right wall 511 while drawing in surrounding air, and reaches floor 514. Then, because window 587 is open, it flows toward window 587 in the direction of left wall 512 (dotted arrow), and other blown out airflows 615 also flow toward window 587 while drawing in surrounding air (dotted arrow).

[0108] The air C in the bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then cooled to 200 m 3 / h of blown-out airflow 615 meets in bathroom 6, mixes with it, and is diluted to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 200m 3 / h of mixed air in the bathroom passes through window 587 and becomes outflow airflow (dotted arrow) 617 to the outside, so the absolute humidity of air C in bathroom 6 decreases. In addition, the large amount of steam generated during bathing, along with the odors and chemical components contained therein, is exhausted to the outside through window 587. And because the mixed air in the bathroom does not flow into the heat exchange ventilation unit 50, the outdoor air with an uncomfortable high temperature or high absolute humidity exchanges heat with the comfortable room air, bringing the temperature and absolute humidity closer to the comfortable room air, and fresh outdoor air can be supplied to the room, reducing the air conditioning load and achieving greater energy savings. Then, from the two bathroom air supply sections 622, 623, an airflow 615 of conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air C in the bathroom 6 is blown into the bathroom 6 at stable times, hitting the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and water vapor and the like are exhausted from the window 587 as mentioned above, ensuring drying. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0109] This embodiment is described assuming a Japanese home with a separate room layout that includes a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a dressing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet found in homes overseas. For example, a bathroom air supply unit 622 that blows conditioned air into the bathroom is installed above the shower and bathtub in the bathroom, a ventilation exhaust unit corresponding to the washroom's ventilation exhaust unit is installed above the toilet and sink in the bathroom, a bathroom air supply unit 623 is installed between the bathroom air supply unit 622 and the ventilation exhaust unit, a window is installed on the shower and bathtub side, and an opening / closing shutter is installed at the intake port of the ventilation exhaust unit. It is conceivable that the window is normally closed to exhaust air through the ventilation exhaust unit, and in summer, the opening / closing shutter of the ventilation exhaust unit is closed and the window is opened to exhaust air through the window, and the same effect can be achieved by these actions.

[0110] As a result of the above, a large volume of conditioned air is blown out into bathroom 6 from two bathroom air supply sections 622, 623, and the air flows from bathroom air supply section 622 to ventilation opening 585, causing it to hit left wall 512, bathtub 513, floor 514, etc., and from bathroom air supply section 623 to window 587, it hits right wall 511, floor 514, bathtub 513, etc., and the exhaust of water vapor and the like from ventilation opening 585 and window 587 allows for faster drying. Furthermore, by hanging clothes in the bathroom 6, it is possible to dry a large amount of clothes, and the heat generated when air-conditioning the bathroom 6, drying the bathroom, and drying the clothes can also be recovered. Therefore, by being able to recover the heat from the conditioned air supplied to the bathroom 6 almost throughout the year, further energy savings can be achieved.

[0111] (Embodiment 8) FIG. 18 is a cross-sectional view of a bathroom and a washroom in accordance with the eighth embodiment of the present invention. This embodiment 8 differs from embodiment 6 in the configuration of the bathroom 6, etc., and as a result, the operation and effects are different. Below, only the parts that differ from embodiment 6 will be explained, and the parts that are not explained are basically the same as embodiment 6. As shown in the figure, an air conditioning ventilation system 702 is installed in a building 1, which is a highly airtight and highly insulated house. Bathroom air supply section 722 that blows out conditioned air produced by air conditioning unit 15 is provided on the left and right side of ceiling 510 of bathroom 6 near window 587.

[0112] Bathroom air supply section 722 consists of grill 725, main body 726, duct adapter 727, and two airflow direction change plates 728, with main body 726 and other components being elongated in the depth direction of bathroom 6. Conditioned air from duct 732 connected to duct adapter 727 above the ceiling of bathroom 6 passes through main body 726 and is blown into bathroom 6 from grill 725 installed on the ceiling of bathroom 6 along two airflow direction change plates 728, which can manually or automatically change the airflow direction of the conditioned air from 30° to 90° (straight down). One of airflow direction change plates 728 is normally set at approximately 45° toward left wall 512, and the other at approximately 45° toward right wall 511. Below each bathroom air supply section 722, a clothes drying rod 790 for drying clothes is provided. There is a door 541 between the bathroom 6 and the adjacent washroom (room B) 7, and an openable / closable ventilation opening (opening to the adjacent room) 585 is provided below the door. In bathroom 6, left wall 512 facing ventilation opening 585 and in contact with the outside is provided with an openable, airtight, and highly insulating window (opening to the outside) 587. Air blowing section 18 and bathroom air supply section 722 are connected in a one-to-one-to-one relationship by duct 732. A ventilation fan 750 having a fan (not shown), a motor (not shown), and an electrical component (not shown) inside is installed on right wall 511 of ceiling 510 of bathroom 6, and exhaust duct 755 connected to a duct adapter (not shown) is connected to outdoor exhaust hood 757 installed on the outer wall of building 1. Then, air C inside bathroom 6 is sucked in by a switch (not shown) and exhausted to the outside through outdoor exhaust hood 757.

[0113] In the above configuration, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the blower (not shown) that blows air to the bathroom air supply section 722 in the bathroom 6 is stopped and the bathroom 6 is not air-conditioned. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed. The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. Also, the ventilation fan 750 is stopped.

[0114] The following explains how to operate the device during and after bathing. During bathing, the air blower 18 that blows air to the bathroom air supply section 722 of the bathroom 6 is stopped and the bathroom 6 is not air-conditioned, just like in normal operation other than the above-mentioned bathing, bathroom drying operation after bathing, and clothes drying operation in the bathroom 6. The window (opening to the outside) 587 and the ventilation opening (opening to the adjacent room) 585 are closed. Also, the ventilation fan 750 is stopped. In the summer, when the bathroom becomes very hot while taking a bath, the air volume of the air blowing section 18 of the bathroom air supply section 722 is set to the medium-low notch of 100 m 3 / h, and conditioned air may be blown into bathroom 6. In this case, ventilation fan 750 may also be set to the middle notch of 100 m / h by a switch (not shown). 3 / h, and the mixed air in bathroom 6 is exhausted to the outside. In this case, however, the heat of the mixed air in bathroom 6 cannot be recovered, so it is better to set the period to a short time in order to save energy.

[0115] There are two ways to operate the water heater after bathing, depending on the temperature and humidity of the outdoor air. In winter or intermediate seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, the ventilation port 585 is opened and the heat exchange ventilation unit 50 is set to the strong notch 250 m by using a switch (not shown). 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 125 m 3 Drive at / h.

[0116] 18, conditioned air discharged from bathroom 6 along air discharge direction change plate 728 of bathroom air supply section 722 flows diagonally downward to the right, toward the center, and toward the left and right. Because window 587 is closed, discharged airflow 715 discharged diagonally downward to the left flows along window 587 and left wall 512 (indicated by the arrow), drawing in surrounding air, before reaching bathtub 513 and floor 514. Because vent 585 is open and heat exchange ventilation unit 50 is operating at the strong notch, discharged airflow 715 discharged diagonally downward to the left flows toward vent 585 toward right wall 511 (indicated by the arrow). Similarly, discharged airflow 715 discharged toward the center and toward the right and downward flows toward vent 585, drawing in surrounding air (indicated by the dashed-dotted arrow). As a result, the air C in the bathroom 6, which has an absolute humidity of about 30 g / kg and a relative humidity of 100%, is cooled to 125 m 3 / h of blown-out airflow 715 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 125m 3 The mixed air in the bathroom at 65 m / h passes through the ventilation opening 585 and becomes the inflow airflow (arrowed dashed line) 716 that flows into the adjacent bathroom 7, so the absolute humidity of the air C in the bathroom 6 decreases. 3 / h return air and air D from washroom 7 are combined, and the relative humidity drops further to about 190m 3 / h of combined air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 561.

[0117] Although the absolute humidity of the incoming airflow 716 is high, by mixing the return air, which has an absolute humidity and relative humidity close to that of the conditioned air, with the air D in the washroom 7, the relative humidity quickly drops to around 90% to 80%, and the room temperature of the washroom 7 and the surrounding area is close to the temperature of the conditioned air due to the air conditioning ventilation system 702, so there is little chance of condensation forming in the washroom 7. Even if condensation does form, the absolute humidity of the incoming airflow 716 drops in a short time, so the condensation will dry naturally. In addition, since water is often handled in the washroom 7 and the floor is made of highly water-resistant flooring materials, problems such as corrosion will not occur even if condensation occurs and the floor gets wet. If condensation temporarily forms around the ventilation opening 585, it is possible to dry it quickly by increasing the air volume of the heat exchange ventilation unit 50, and by increasing the air volume of the return air flowing in from the ventilation air intake opening 586 of the washroom 7 and the combined air exhausted from the ventilation exhaust section 561. In addition, the large amount of water vapor generated during bathing, as well as the odors and chemical components contained therein, are exhausted to the outside of the room by the heat exchange ventilation unit 50 through the vent 585 and the ventilation exhaust section 561 of the washroom 7.

[0118] Then, from the bathroom air supply section 722, conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air in the bathroom 6 is blown into the bathroom 6 when stable, and hits the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the aforementioned ventilation opening 585. The heat exchange ventilation unit 50 removes a large amount of moisture, odor, and CO2 from the bathroom 6, etc., into the 250m 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above. When washed clothes are hung on clothes drying rod 790 in bathroom 6 and the unit is set to the post-bath operating mode described above, conditioned air with a stable temperature difference of 1 to 2 K and a low relative or absolute humidity compared to the bathroom air is blown out from bathroom air supply section 722 into bathroom 6 and hits the clothes. Therefore, by venting water vapor and the like as described above, clothes can be dried more quickly and reliably than simply drying them indoors, and approximately 70% of the total heat supplied for drying the clothes can be recovered.

[0119] In summer or the rainy season, when the outdoor air temperature is higher than the comfortable temperature of the room air, or when the outdoor air absolute humidity is higher than the comfortable absolute humidity of the room air, The ventilation opening 585 is closed, and the blower 18 of the bathroom air supply unit 722 of the bathroom 6 is set to the middle notch of 125 m using a switch (not shown). 3 / h, and the ventilation fan 750 is also operated at a medium-high setting of 125 m / h by a switch (not shown). 3 Drive at / h. 18, conditioned air discharge current 715 flows along air discharge direction change plate 728 of bathroom air supply section 722 in the depth direction of bathroom 6, blowing out diagonally downward to the right, toward the center, and diagonally downward to the left of bathroom 6. Discharge current 515 blowing out diagonally downward to the left, drawing in surrounding air, flows downward along left wall 512 (solid arrow) because window 587 is closed. When it reaches bathtub 513 and floor 514, exhaust fan 750 draws in the mixed air from within the bathroom, causing it to flow to the right (solid arrow). Because vent 585 is closed, discharge current 515 blowing out diagonally downward to the left rises along right wall 511 (dotted arrow) to become exhaust air current 756, which is exhausted from exhaust fan 750, through duct 755, and to the outside through outdoor exhaust hood 757. Because ventilation opening 585 is closed, outlet airflow 515 blown out diagonally downward to the right draws in surrounding air, becoming exhaust airflow 756, which is similarly exhausted to the outside of the room.

[0120] The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then compared with the conditioned air at 125 m 3 / h of blown-out airflow 515 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 125m 3 / h of mixed air in the bathroom is exhausted to the outside by ventilation fan 750 together with the large amount of water vapor generated during bathing and the odors and chemical components contained therein, so the absolute humidity of air C in bathroom 6 decreases. And because the mixed air in the bathroom does not flow into the heat exchange ventilation unit 50, the outdoor air with an uncomfortable high temperature or high absolute humidity exchanges heat with the comfortable room air, bringing the temperature and absolute humidity closer to the comfortable room air, and fresh outdoor air can be supplied to the room, reducing the air conditioning load and achieving greater energy savings. Then, from the bathroom air supply section 722, an airflow 715 of conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air C in the bathroom 6 is blown into the bathroom 6 at stable times, hitting the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and the aforementioned ventilation fan 750 exhausts water vapor, etc., ensuring drying. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0121] This embodiment is described assuming a Japanese home with a separate room layout that includes a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a dressing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet found in homes overseas. For example, a bathroom air intake 722 that blows conditioned air into the bathroom is installed above the shower and bathtub in the bathroom, a ventilation exhaust 561 corresponding to the bathroom's ventilation exhaust 561 is installed above the toilet and sink in the bathroom, a ventilation fan 750 is installed between the bathroom air intake 722 and the ventilation exhaust 561, and an opening / closing shutter is installed at the intake port of the ventilation exhaust 561. Air is normally exhausted through the ventilation exhaust 561, and in summer, the opening / closing shutter of the ventilation exhaust 561 is closed and the ventilation fan 750 is operated to exhaust air outside. These actions can achieve the same effect.

[0122] As described above, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the fresh outdoor air and the return air of the conditioned air from the heat exchange ventilation unit 50 are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit 17 and the room temperature by the air conditioning section 17 and the blower section 18 in the air conditioning unit 15, which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown out into bathroom 6, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity.

[0123] By opening ventilation opening 585 in bathroom 6, the mixed air from the bathroom enters the adjacent washroom 7, where it flows through ventilation exhaust section 561 in washroom 7 and into heat exchange air unit 50, where it exchanges heat with outdoor air before being discharged outdoors, recovering heat during bathing and quickly lowering the absolute humidity in the bathroom. As the mixed air from the bathroom with a reduced relative humidity passes through the duct and heat exchange element, condensation on the duct and heat exchange element is reduced, preventing a shortened lifespan of the heat exchange element and preventing mold from growing in bathroom 6. After bathing, in summer, rainy season, or the like, when the temperature of the outdoor air is higher than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, by operating ventilation fan 750 and closing vent 585, the mixed air in the bathroom is quickly exhausted to the outside, quickly reducing the absolute humidity in bathroom 6, preventing mold in the bathroom, and supplying outdoor air at a comfortable temperature and humidity after heat exchange. Therefore, an air conditioning and ventilation system 702 that is energy-efficient, comfortable, and provides clean air is obtained. In addition, because conditioned air is blown directly into the bathroom 6, the bathroom 6 dries faster after a bath, and clothes can be dried by hanging them out to dry in the bathroom 6. Heat can also be recovered when air-conditioning the bathroom 6, drying the bathroom, and drying clothes. Therefore, further energy savings can be achieved by recovering the heat from the conditioned air supplied to the bathroom 6 almost all year round.

[0124] (Embodiment 9) FIG. 19 is a cross-sectional view of a building showing the configuration of an air-conditioning ventilation system according to a ninth embodiment of the present invention. This embodiment 9 differs from embodiment 1 in the configuration of the bathroom 6, etc., and as a result, the operation and effects are different. Below, only the parts that differ from embodiment 1 will be explained, and the parts that are not explained are basically the same as embodiment 1. As shown in the figure, an air conditioning ventilation system 802 is installed in a building 1, which is a highly airtight and highly insulated house. A bathroom air supply section 822 that blows out conditioned air produced by air conditioning unit 15 is provided on the ceiling of bathroom 6. Air blowing section 18 and bathroom air supply section 822 are connected in a one-to-one-to-one relationship by duct 832. In the ceilings of the bathroom 6, washroom (room B) 7, and toilet (room B) 8 in the building 1, ventilation exhaust sections 60, 61, and 62 such as exhaust louvers are provided to exhaust the air from each room, and are connected to exhaust ducts A865, 66, and 67, respectively. The exhaust ducts A865, 66, and 67 are connected to exhaust duct B71 at a junction 70, and the exhaust duct B71 is connected to the heat exchange ventilation unit 50. In bathroom 6, a wall (not shown) facing ventilation air supply section 85 and in contact with the outside is provided with an openable and closable window (outdoor opening) 587 that is airtight and highly insulating.

[0125] FIG. 20 is a cross-sectional view of a bathroom and a washroom in accordance with the ninth embodiment of the present invention. Bathroom 6 and washroom (room B) 7 are located on the first floor of building 1, and washroom 7 is connected to entrance 10 by door 540, with the ventilation air intake section being an undercut 586 of the door. Bathroom 6 is connected to washroom 7 by door 541, and below door 541 there is provided an openable / closable ventilation opening (opening to the adjacent room) 585. In bathroom 6, a wall (not shown) facing door 100 and in contact with the outside is provided with an openable, airtight, and highly insulating window (outdoor opening) 587. A ventilation / exhaust section 61 such as an exhaust louver is provided on the ceiling of the washroom (room B) 7 to exhaust air from the room. A ventilation and exhaust section 60 such as an exhaust louver for exhausting air from the room is provided on the left and right sides of the ceiling 510 of the bathroom 6 near the window 587. The ventilation exhaust section 60 of the bathroom 6 has an exhaust louver (not shown) on the ceiling 510 side of the bathroom 6, and the exhaust louver has a filter (not shown) and a damper (not shown) that can be opened and closed electrically using a switch (not shown). Instead of an electric damper, a mechanism may be provided in which the exhaust air duct is blocked by manually sliding a shutter from the bathroom 6 side below the exhaust louvers of the ventilation and exhaust section 60, allowing the exhaust air volume to be reliably adjusted with a simple mechanism. Bathroom air supply section 822 that blows out conditioned air produced by air conditioning unit 15 is provided on the left-right side of ceiling 510 of bathroom 6 near door 541.

[0126] Bathroom air supply section 822 consists of grill 825, main body 826, duct adapter 827, and two airflow direction change plates 828, with main body 826 and other components being elongated in the depth direction of bathroom 6. Conditioned air from duct 832 connected to duct adapter 827 above the ceiling of bathroom 6 passes through main body 826 and is blown into bathroom 6 from grill 825 installed on the ceiling of bathroom 6 along two airflow direction change plates 828, which can manually or automatically change the airflow direction of the conditioned air from 30° to 90° (straight down). One of airflow direction change plates 828 is normally set at approximately 45° toward left wall 512, and the other at approximately 45° toward right wall 511. Below the bathroom air supply section 822, a clothes drying rod 890 for drying clothes is provided.

[0127] In the above configuration, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the air blowing unit (not shown) that blows air to the bathroom air supply unit 822 in the bathroom 6 is stopped and the bathroom 6 is not air-conditioned. The window (opening to the outside) 587 is closed, and the ventilation opening (opening to the adjacent room) 585 is open. The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. Therefore, the heat exchange ventilation unit 50 ventilates approximately 65 m3 of moisture, odor, and CO2 from the bathroom 6, washroom 7, toilet 8, etc. 3 / h, approx. 30m 3 / h, approx. 30m 3 / h, total 125m 3 / h of air is exhausted, and 125m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1.

[0128] However, because bathroom 6 in building 1 is typically small and well insulated, the air-conditioning load is low, and even if it is air-conditioned, the actual situation is that the power consumption remains almost unchanged. To maintain a comfortable environment in bathroom 6 or to actively air-condition bathroom 6 for purposes such as drying bathroom furniture and clothes, the air volume of blower 18 of bathroom air supply section 822 can be reduced to blow conditioned air into bathroom 6. In this case, if the air volume of blower 18 is greater than the ventilation air volume of heat exchange ventilation unit 50 for bathroom 6, the conditioned air blown into bathroom 6 mixed with the air in bathroom 6 will flow into washroom 7 through ventilation opening (opening to adjacent room) 585 of door 541. However, since the air is exhausted from ventilation exhaust section 61 of washroom 7, the absolute humidity of the air in bathroom 6 is not high unless bathing, and this does not pose a problem.

[0129] The following explains how to operate the device during and after bathing. During bathing, as in normal operation other than the above-mentioned bathing, bathroom drying operation after bathing, and clothes drying operation in bathroom 6, blower 18 that blows air to bathroom air supply section 822 in bathroom 6 is stopped and bathroom 6 is not air-conditioned. Window (opening to the outside) 587 and ventilation opening (opening to the adjacent room) 585 are closed. This prevents air from being exhausted from ventilation opening 585 even when heat exchange ventilation unit 50 operates at a ventilation air volume 24 hours a day, preventing the feeling of cold air caused by the exhaust air speed while bathing. In addition, outside air does not flow in through window 687, stabilizing the temperature in the bathroom. Also, before taking a bath, a switch (not shown) provided outside the bathroom 6 is used to electrically close the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 using a damper motor (not shown). As a result, even if the heat exchange ventilation unit 50 operates at a ventilation air volume for 24 hours, the air is not exhausted from the ventilation exhaust section 60, and the feeling of cold air due to the exhaust air speed while bathing can be prevented.

[0130] The damper of the ventilation exhaust section 60 may be located in the heat exchange ventilation unit 50 or in the duct connected to it, and even if it is not located, if the window 587 and the ventilation opening 585 are closed and there is good airtightness and little leakage, the feeling of cold air is less likely to be felt. Also, if you are concerned about the feeling of cold air, you can stop the heat exchange ventilation unit 50, but during that time, fresh outdoor air cannot be introduced into the building 1 other than through natural ventilation, so it is best to keep it turned off for a short period of time. However, if the bathroom gets very hot in the summer, you can open the damper to vent the air. Even with the damper closed, the 24-hour ventilation airflow of the heat exchange ventilation unit 50 is maintained at 50 m from the ventilation exhaust part 61 of the washroom 7. 3 / h, 50m from the ventilation exhaust 62 of toilet 8 3 / h of air containing odors, humidity, and CO2 is exhausted, and the entire building 1 is exhausted for 100m 3 / h ventilation air volume is ensured. Furthermore, in the summer, when the bathroom becomes very hot, the air volume of blower 18 of bathroom air supply unit 822 can be reduced to blow conditioned air into bathroom 6. Window 587 can then be opened slightly to allow the mixed bathroom air in bathroom 6 to flow outside, pushed out by the conditioned air. In this case, however, heat cannot be recovered from the mixed bathroom air in bathroom 6, so it is best to keep this period short to conserve energy.

[0131] There are two ways to operate the water heater after bathing, depending on the temperature and humidity of the outdoor air. In winter or during the intermediate seasons, when the outdoor air temperature is lower than the comfortable temperature of the room air or when the outdoor air absolute humidity is lower than the comfortable absolute humidity of the room air, a switch (not shown) is used to electrically open the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 using a damper motor (not shown). Also, the heat exchange ventilation unit 50 can be set to the strong notch of 250 m by using a switch (not shown). 3 / h, and at the same time, the air blower for bathroom 6 is set to the middle notch of 130 m 3 Drive at / h.

[0132] 20 , conditioned air discharge current 815 flows along air discharge direction change plate 828 of bathroom air supply section 822 in the depth direction of bathroom 6, blowing out toward the lower right, center, and lower left of bathroom 6. Because air vent 585 is closed, the damper of ventilation / exhaust section 60 is open, and heat exchange ventilation unit 50 is operating at a strong setting, discharge current 815 flows along right wall 511 (solid arrow) while drawing in surrounding air, and reaches floor 514. Discharge current 815 then flows toward bathtub 513 (solid arrow), rises along left wall 512 (solid arrow), becomes exhaust air current 856, and is drawn into ventilation / exhaust section 60. The blown-out airflow 815 blown out diagonally downward to the left becomes exhaust airflow 856 while drawing in surrounding air because window 587 is closed and the damper of ventilation exhaust section 60 is open, and is then sucked into ventilation exhaust section 60.

[0133] The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then cooled to 130 m 3 / h of blown-out airflow 515 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 130m 3 / h of mixed air in the bathroom becomes exhaust airflow 856 drawn into ventilation exhaust section 60, so the absolute humidity of air C in bathroom 6 decreases. Furthermore, since the ventilation opening 585 is closed, the large amount of water vapor generated in the bathroom 6 when bathing and the odors and chemical components contained therein do not flow into the washroom 7, and the temperature and humidity in the washroom 7 do not change, maintaining a comfortable environment. In addition, the large amount of water vapor generated during bathing, as well as the odors and chemical components contained therein, are exhausted to the outside of the room through the ventilation and exhaust section 60 of the bathroom 6 by the heat exchange ventilation unit 50.

[0134] Then, conditioned air with a temperature difference of 1 to 2 K and low relative or absolute humidity compared to the air in the bathroom 6 is blown out from the bathroom air supply section 822 into the bathroom 6 when stable, and hits the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the ventilation exhaust section 60 mentioned above. From the ventilation exhaust 60 of bathroom 6, 130 m from bathroom 6 through exhaust duct A865 3 The relative humidity of the exhaust air drops to below 90%. The temperature difference between the temperature around the exhaust duct A865 installed in the insulated space and the temperature of the air passing through is less than 5K, so condensation is unlikely to occur inside the exhaust duct A865. The heat exchange ventilation unit 50 then ventilates the 250m 2 air containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0135] When washed clothes are hung on clothesline 890 in bathroom 6 and the unit is set to the post-bath operating state described above, conditioned air with a temperature difference of 1 to 2 K and a lower relative or absolute humidity than the bathroom air when stable is blown out from bathroom air supply section 822 into bathroom 6 and hits the clothes. Therefore, by venting water vapor and the like as described above, clothes can be dried more quickly and reliably than simply drying them indoors, and approximately 70% of the total heat supplied for drying the clothes can be recovered.

[0136] In the summer or rainy season, when the temperature of the outdoor air is higher than the comfortable temperature of the room air, or when the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, open the window 587 by about 5 cm to 10 cm, and turn the switch (not shown) to turn the blower 18 of the bathroom air supply unit 822 of the bathroom 6 to the middle notch of 130 m. 3 / h, and the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 is closed. 20 , conditioned air blown out along airflow direction-changing plate 828 of bathroom air supply section 822 flows in the depth direction of bathroom 6, blowing out diagonally downward to the right, toward the center, and toward the left and right of bathroom 6. Because air vent 585 is closed and the damper of ventilation / exhaust section 60 is closed, airflow 815 blown out diagonally downward to the right flows along right wall 511 while drawing in surrounding air, and reaches floor 514. Because window 587 is open, airflow 815 blown out diagonally downward to the right flows toward window 587 in the direction of left wall 512 (dotted arrow). Similarly, airflow 815 blown out toward the center and diagonally downward to the left also flows toward window 587 while drawing in surrounding air (dotted arrow).

[0137] The air C in bathroom 6, whose absolute humidity and relative humidity have risen to about 30 g / kg and 100%, respectively, due to bathing, is then cooled to 130 m 3 / h of blown-out airflow 815 meets, mixes, and dilutes in bathroom 6 to become mixed air in the bathroom with a relative humidity reduced to about 90%. And 130m 3 / h of mixed air in the bathroom passes through window 587 and becomes outflow airflow (dotted arrow) 517 to the outside, so the absolute humidity of air C in bathroom 6 decreases. In addition, the large amount of steam generated during bathing, along with the odors and chemical components contained therein, is exhausted to the outside through window 587. And because the mixed air in the bathroom does not flow into the heat exchange ventilation unit 50, the outdoor air with an uncomfortable high temperature or high absolute humidity exchanges heat with the comfortable room air, bringing the temperature and absolute humidity closer to the comfortable room air, and fresh outdoor air can be supplied to the room, reducing the air conditioning load and achieving greater energy savings. Then, from the bathroom air supply section 822, an airflow 815 of conditioned air with a temperature difference of 1 to 2 K and low relative humidity or absolute humidity compared to the air C in the bathroom 6 is blown into the bathroom 6 at stable times, hitting the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and is reliably dried by the exhaust of water vapor and the like from the window 587 mentioned above. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0138] When operating after a bath, if the damper of ventilation / exhaust section 60 is not present, bathroom 6 will be under negative or positive pressure depending on the balance between the airflow rate of blower 18 of bathroom air supply section 822 and the exhaust airflow rate of exhaust airflow 856 of ventilation / exhaust section 60 of bathroom 6 via heat exchange air exchange unit 50. In the case of negative pressure, outside air flows in through open window 587, and the air in bathroom 6 containing a large amount of water vapor mixes with the conditioned air and outside air, which have a lower absolute humidity than the air in bathroom 6. This mixed air in the bathroom with a lower relative humidity is then exhausted from ventilation / exhaust section 60, reducing the likelihood of condensation forming in the duct or heat exchange air exchange unit 50. In the case of positive pressure, as mentioned above, air flows out of the room through open window 587, achieving the same effect. In either case, the airflow 815 is blown out from the bathroom air supply section 822 into the bathroom 6, hitting the ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside the wet bathroom 6, and water vapor and the like are exhausted from the window 587 mentioned above, ensuring drying. Also, if you are concerned about the inflow of outside air, you can stop the heat exchange ventilation unit 50, but during that time, fresh outside air cannot be introduced into the building 1 other than through natural ventilation, so it is best to keep this for a short period of time.

[0139] This embodiment is described assuming a Japanese home with a separate room layout, including a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a dressing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet, which are found in homes overseas. For example, a bathroom ventilation and exhaust unit 60 is installed above the shower and bathtub in the bathroom, a bathroom air supply unit 822 that blows conditioned air into the bathroom is installed above the toilet and sink in the bathroom, a window is installed on the side of the shower and bathtub, and an opening / closing shutter is installed at the intake port of the ventilation and exhaust unit. It is conceivable that the window is normally closed to exhaust air through the ventilation and exhaust unit, and in summer, the opening / closing shutter of the ventilation and exhaust unit is closed and the window is opened to exhaust air through the window, and the same effect can be achieved by these actions.

[0140] As described above, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the fresh outdoor air and the return air of the conditioned air from the heat exchange ventilation unit 50 are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit 17 and the room temperature by the air conditioning section 17 and the blower section 18 in the air conditioning unit 15, which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown out into bathroom 6, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity.

[0141] Then, by opening the damper of bathroom 6's ventilation exhaust section 60 and closing bathroom 6's window 587, the mixed air in the bathroom quickly flows into heat exchange air unit 50, where it exchanges heat with the outdoor air and is discharged outdoors, quickly recovering heat during bathing and quickly lowering the absolute humidity in the bathroom. The mixed air in the bathroom with a reduced relative humidity flows directly into bathroom 6's ventilation exhaust section 60 and passes through the duct and heat exchange element, reducing condensation in adjacent rooms, the duct, and the heat exchange element, preventing a shortened lifespan of the heat exchange element and preventing mold in the bathroom. After bathing, in summer, rainy season, etc., if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, closing the damper of ventilation exhaust section 60 of bathroom 6 and opening window 587 will allow the mixed air from inside the bathroom to be exhausted outside, quickly reducing the absolute humidity in bathroom 6, preventing mold from growing in the bathroom, and allowing the outdoor air to be supplied at a comfortable temperature and humidity after heat exchange. Therefore, an air conditioning and ventilation system 802 that is energy-efficient, comfortable, and provides clean air is obtained. In addition, because conditioned air is blown directly into the bathroom 6, the bathroom 6 dries faster after a bath, and clothes can be dried by hanging them out to dry in the bathroom 6. Heat can also be recovered when air-conditioning the bathroom 6, drying the bathroom, and drying clothes. Therefore, further energy savings can be achieved by recovering the heat from the conditioned air supplied to the bathroom 6 almost all year round.

[0142] (Embodiment 10) FIG. 21 is a cross-sectional view of a bathroom and a washroom in accordance with the tenth embodiment of the present invention. This embodiment 10 differs from embodiment 9 in the configuration of the bathroom 6 and washroom 7, and as a result, the operation and effects are different. Below, only the parts that differ from embodiment 9 will be explained; parts that are not explained are basically the same as embodiment 9. As shown in the figure, an air conditioning ventilation system 902 is installed in a building 1, which is a highly airtight and highly insulated house. A ventilation / exhaust section 60 such as an exhaust louver for exhausting air from the room is provided on the side of the ceiling 510 of the bathroom 6 near the left and right windows 587. Bathroom air supply section 822 that blows out conditioned air produced by air conditioning unit 15 is provided on the left-right side of ceiling 510 of bathroom 6 near door 541. Below the bathroom air supply section 822, a clothes drying rod 890 for drying clothes is provided. A ventilation exhaust chamber 961 (ventilation exhaust section, confluence chamber) is provided on the ceiling of the washroom (room B) 7, which sucks in air D from the washroom 7, combines it with air C from the bathroom 6, and exhausts it.

[0143] The ventilation exhaust chamber 961 comprises an exhaust louver 962 , a main body (confluence chamber) 963 having an internal volume larger than that of a normal branch duct, a duct adapter 964 , and a ventilation intake port 967 . Air D from the washroom 7 is sucked in through an opening (not shown) in the exhaust louver 962, which is installed so as to be in contact with the ceiling surface (not shown) of the washroom 7, and flows into the main body (confluence chamber) 963.The air D from the washroom 7 then merges with air C from the bathroom 6, which flows into the main body (confluence chamber) 963 from a ventilation intake port 967 connected to an exhaust duct A965 from the ventilation exhaust section 60 of the bathroom 6.The merged air then flows into exhaust duct A966 connected to a duct adapter 964, and at the junction 270, it further merges with air from the ventilation exhaust section 62 of the toilet 8, and flows into the heat exchange air unit 50 through exhaust duct B71. The internal volume of the main body (confluence chamber) 963 should be determined based on the ventilation air volume of the entire house, the ventilation air volume from the bathroom 6, the normal average humidity of sanitary areas such as the bathroom 6, toilet 8, and washroom 7, the storeroom (not shown), or the kitchen (not shown), and the humidity at high humidity such as when taking a bath in the bathroom 6. For example, if the floor area is 100 m 2 , with a ceiling height of 2.5m and a ventilation rate of 0.5 times / h, the 24-hour ventilation air volume is 125m 3 / h, the air volume of each of bathroom 6, toilet 8, and washroom 7 is 65m 3 / h, 30m 3 / h, 30m 3 / h, when the average humidity is 50% or less and the humidity during bathing is 80% or more, the air volume flowing from the bathroom 6 to the main body (confluence chamber) 963 is 65 m 3 / h(0.02m 3 The minimum internal volume of the main body (confluence chamber) 963 is 0.02 m3 so that the air (air) is discharged from the main body (confluence chamber) 963 once per second. 3 The dimensions are 250mm wide x 250mm deep x 250mm high.

[0144] In this embodiment, there is one ventilation intake 967 on the main body 963, but three may be provided on the side of the main body 963, and at least one of them may be used, and air may be drawn in from sanitary areas such as the washroom (room B) 7, toilet (room B) 8, shoe closet (room B), and walking closet (room B) and merged. In addition, in this embodiment, the ventilation exhaust chamber 961 is provided on the ceiling of the washroom 7, but it may also be provided on the ceiling 510 of the bathroom 6, and an exhaust duct connected to the ventilation exhaust section provided on the ceiling of the washroom 7 may be connected to the ventilation intake port of the ventilation exhaust chamber 961, so that air C from the bathroom 6 is drawn in through the opening of the exhaust louver and merges with air D from the washroom 7 inside the main body, and the merged air is then passed from the duct adapter through the exhaust duct to the heat exchange ventilation unit.

[0145] In the above configuration, during normal operation other than bathing, bathroom drying operation after bathing, and clothes drying operation, blower 18, which blows air to bathroom air supply section 822 of bathroom 6, is stopped and bathroom 6 is not air-conditioned. The window (opening to the outside) 587 is closed, and the ventilation opening (opening to the adjacent room) 585 is open. The heat exchange ventilation unit 50 has a 24-hour ventilation air volume of 125 m 3 / h. In the above operating state, some of the return air, which has a comfortable temperature and humidity and good air quality after air-conditioning the room or space, flows into the entrance 10, staircase landing 11, corridor (not shown), etc., and through the heat exchange ventilation unit 50, flows into the washroom 7 from the ventilation air supply section 586 of the washroom 7, and then flows into the toilet 8 from the ventilation air supply section 87 of the toilet 8. The air from toilet 8 and the return air flowing in are combined and flow for about 30m. 3 / h of combined air enters the heat exchange ventilation unit 50 through the ventilation exhaust section 62 and is exhausted to the outside. Approximately 95m of air flowed in from the ventilation air supply 586 of washroom 7. 3 Approximately 65m of the return air per hour 3 / h is The combined air that flows into bathroom 6 from ventilation opening 585 and merges with the air from bathroom 6 is approximately 65 m 3 / h is sucked in from the ventilation exhaust section 60 of the bathroom 6, passes through the exhaust duct A965, and enters the main body 963 from the ventilation intake port 967 of the ventilation exhaust chamber 961. Approximately 95m 3 Approximately 30m of the return air per hour 3 / h is combined with the air from bathroom 7, and the combined air is approximately 30m 3 / h is sucked in through the exhaust louver 962 of the ventilation exhaust chamber 961, mixed with the combined air from the bathroom 6 in the main body 963, and 3 / h of mixed air passes from the duct adapter 964 through the exhaust duct A966 and is then exhausted from the heat exchange air unit 50 to the outside. Therefore, under normal conditions, the air containing moisture and odors generated in the bathroom 6 and washroom 7, as well as the CO2 in the return air, are mainly exhausted to the outdoors, and to replace it, return air with a comfortable temperature and humidity and good air quality flows into the bathroom 6 and washroom 7. In other words, the heat exchange ventilation unit 50 ventilates 125 m3 of air containing moisture, odors, and CO2 from the bathroom 6, washroom 7, etc. 3 / h of air is exhausted, and 125m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1.

[0146] In building 1, bathroom 6 is typically small and well insulated, so the air-conditioning load is low, and even if it is air-conditioned, the actual situation is that the power consumption is almost the same. To maintain a comfortable environment in bathroom 6 or to actively air-condition bathroom 6 for purposes such as drying the bathroom or clothes, the air volume of blower 18 of bathroom air supply section 822 can be reduced to blow conditioned air into bathroom 6. In this case, if the air volume of blower 18 is greater than the ventilation air volume of heat exchange ventilation unit 50 for bathroom 6, the conditioned air blown into bathroom 6 mixed with the air in bathroom 6 will flow into washroom 7 through ventilation opening (opening to adjacent room) 585 of door 541. However, since the air is exhausted from ventilation exhaust chamber 961 of washroom 7, the absolute humidity of the air in bathroom 6 is not high unless bathing, and this does not pose a problem.

[0147] The following explains how to operate the device during and after bathing. During bathing, as in normal operation other than the above-mentioned bathing, bathroom drying operation after bathing, and clothes drying operation in bathroom 6, blower 18 that blows air to bathroom air supply section 822 in bathroom 6 is stopped and bathroom 6 is not air-conditioned. Window (opening to the outside) 587 and ventilation opening (opening to the adjacent room) 585 are closed. This prevents air from being exhausted from ventilation opening 585 even when heat exchange ventilation unit 50 operates at a ventilation air volume 24 hours a day, preventing the feeling of cold air caused by the exhaust air speed while bathing. In addition, outside air does not flow in through window 687, stabilizing the temperature in the bathroom. Also, before taking a bath, a switch (not shown) provided outside the bathroom 6 is used to electrically close the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 using a damper motor (not shown). As a result, even if the heat exchange ventilation unit 50 operates at a ventilation air volume for 24 hours, the air is not exhausted from the ventilation exhaust section 60, and the feeling of cold air due to the exhaust air speed while bathing can be prevented. However, if the bathroom gets very hot in the summer, you can open the damper to vent the air. Even with the damper closed, the 24-hour ventilation airflow of the heat exchange ventilation unit 50 allows air to flow 50m from the ventilation exhaust chamber 961 in bathroom 7. 3 / h, 50m from the ventilation exhaust 62 of toilet 8 3 / h of air containing odors, humidity, and CO2 is exhausted, and the entire building 1 is exhausted for 100m 3 / h ventilation air volume is ensured. Furthermore, in the summer, when the bathroom becomes very hot, the air volume of blower 18 of bathroom air supply unit 822 can be reduced to blow conditioned air into bathroom 6. Window 587 can then be opened slightly to allow the mixed bathroom air in bathroom 6 to flow outside, pushed out by the conditioned air. In this case, however, heat cannot be recovered from the mixed bathroom air in bathroom 6, so it is best to keep this period short to conserve energy.

[0148] There are two ways to operate the water heater after bathing, depending on the temperature and humidity of the outdoor air. In winter or during the intermediate seasons, when the outdoor air temperature is lower than the comfortable temperature of the room air or when the outdoor air absolute humidity is lower than the comfortable absolute humidity of the room air, a switch (not shown) is used to electrically open the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 using a damper motor (not shown). Also, the heat exchange ventilation unit 50 can be set to the strong notch of 250 m by using a switch (not shown). 3 / h, and at the same time, the air blowing section of bathroom air supply section 822 of bathroom 6 is set to the middle notch of 130 m 3 Drive at / h.

[0149] In FIG. 21, the operation and effects in bathroom 6 are the same as those in the ninth embodiment. The large amount of water vapor generated during bathing, along with the odors and chemical components contained therein, is exhausted from bathroom 6's ventilation / exhaust section 60 through ventilation / exhaust chamber 961 to the outside by heat exchange air exchange unit 50. Then, bathroom air supply section 822 blows conditioned air into bathroom 6, which has a temperature difference of 1 to 2 K and a low relative or absolute humidity compared to the air in bathroom 6 when stable. This air hits ceiling 510, right wall 511, left wall 512, bathtub 513, floor 514, etc. inside wet bathroom 6, and is reliably dried by the exhaust of water vapor and other substances from ventilation / exhaust section 60. 130m from bathroom 6 through ventilation exhaust duct A965 from bathroom 6 3 The relative humidity of the exhaust air drops to below 90%. The temperature difference between the temperature around the exhaust duct A865 installed in the insulated space and the temperature of the air passing through is less than 5K, so condensation is unlikely to occur inside the exhaust duct A965. Furthermore, the exhaust duct A965 enters the main body 963 of the ventilation exhaust chamber 961, and the combined air of 60 m 3 / h, diluted and reduced to a relative humidity of 85% or less. 3 Because the air passes through exhaust duct 966, the possibility of condensation within exhaust duct 966 is further reduced. The heat exchange ventilation unit 50 then ventilates the 250m 2 air containing a large amount of moisture, odor, and CO2 from the bathroom 6, etc. 3 / h of air is exhausted, and 250m 3 / h of fresh outdoor air is introduced into Building 1, and approximately 70% of the total heat of the exhaust air is recovered while maintaining very good air quality inside Building 1. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0150] In the summer or rainy season, when the temperature of the outdoor air is higher than the comfortable temperature of the room air, or when the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, open the window 587 by about 5 cm to 10 cm, and turn the switch (not shown) to turn the blower 18 of the bathroom air supply unit 822 of the bathroom 6 to the middle notch of 130 m. 3 / h, and the damper (not shown) of the ventilation exhaust section 60 of the bathroom 6 is closed. In FIG. 21, the operation and effects in bathroom 6 are the same as those in the ninth embodiment. When the absolute humidity and relative humidity of the air C in the bathroom 6 drop and the bathroom 6 becomes dry, the operation returns to the normal state other than during and after bathing as described above.

[0151] This embodiment is described assuming a Japanese home with a separate room layout, including a bathroom with a shower and bathtub and a washroom with a washing machine and sink, which also functions as a changing room for bathing. However, this technology can also be applied to bathrooms with a shower, bathtub, sink, and toilet, which are found in homes overseas. For example, a bathroom ventilation and exhaust unit 60 is installed above the shower and bathtub in the bathroom, a bathroom air supply unit 822 that blows conditioned air into the bathroom is installed above the toilet and sink in the bathroom, a window is installed on the shower and bathtub side, an opening / closing shutter is installed at the intake port of the ventilation and exhaust unit, and a ventilation and exhaust chamber is installed in a room other than the bathroom. It is conceivable that the window is normally closed and the air is exhausted through the ventilation and exhaust unit, and in summer, the opening / closing shutter of the ventilation and exhaust unit is closed and the window is opened and the air is exhausted through the window, and these actions will achieve the same effect.

[0152] As described above, during normal operation other than when taking a bath, when the bathroom is drying after a bath, and when clothes are drying in the bathroom 6, the fresh outdoor air and the return air of the conditioned air from the heat exchange ventilation unit 50 are converted into fresh conditioned air with a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit 17 and the room temperature by the air conditioning section 17 and the blower section 18 in the air conditioning unit 15, which is the return section, and sent to the room for air conditioning. After bathing, in winter or during the intermittent seasons, when the temperature of the outdoor air is lower than the comfortable temperature of the room air or when the absolute humidity of the outdoor air is lower than the comfortable absolute humidity of the room air, conditioned air is blown out into bathroom 6, causing the conditioned air and bathroom air to mix and become mixed bathroom air with a lower relative humidity.

[0153] Then, by closing window 587 in bathroom 6 and opening the damper of ventilation / exhaust unit 60 in bathroom 6, the mixed air in the bathroom is merged with the indoor air in bathroom 7 in ventilation / exhaust chamber 961 in washroom 7 to produce combined air with a lower relative humidity. This combined air then flows through the duct into heat exchange air unit 50, exchanges heat with the outdoor air, and is then discharged outdoors, recovering heat during bathing while quickly lowering the absolute humidity in the bathroom. Furthermore, because the combined air with a lower relative humidity flows from ventilation / exhaust chamber 961 and passes through the duct and heat exchange element, the possibility of condensation on the duct and heat exchange element is further reduced, preventing a shortened lifespan of the heat exchange element and preventing mold from growing in the duct and inside the bathroom. After bathing, in summer, rainy season, etc., if the temperature of the outdoor air is higher than the comfortable temperature of the room air or if the absolute humidity of the outdoor air is higher than the comfortable absolute humidity of the room air, closing the damper of ventilation exhaust section 60 of bathroom 6 and opening window 587 will allow the mixed air from inside the bathroom to be exhausted outside, quickly reducing the absolute humidity in bathroom 6 and preventing mold from growing inside bathroom 6, and allowing the outdoor air to be supplied at a comfortable temperature and humidity after heat exchange. Therefore, an air conditioning and ventilation system 902 that is energy-efficient, comfortable, and provides clean air is obtained. In addition, because conditioned air is blown directly into the bathroom 6, the bathroom 6 dries faster after a bath, and clothes can be dried by hanging them out to dry in the bathroom 6. Heat can also be recovered when air-conditioning the bathroom 6, drying the bathroom, and drying clothes. Therefore, further energy savings can be achieved by recovering the heat from the conditioned air supplied to the bathroom 6 almost all year round. [Industrial Applicability]

[0154] This system can create efficient air conditioning and ventilation flow throughout the building, and can be applied to air conditioning and ventilation in buildings with large floor areas, such as commercial facilities and hospitals, as long as the building has a sanitary area. [Explanation of symbols]

[0155] 1. Building 2, 202 Air conditioning and ventilation system 4 Living room (Room A) 5 Bedroom (Room A) 6 Bathroom 7 Washroom (Room B) 8 Toilet (Room B) 9 Attic (Room A) 10 Entrance 11 Staircase landing 12 Under the floor (Room A) 15 Air conditioning unit (return section) 16 Intake louver 17 Air Conditioning Section 18 Blower 19 Air conditioner outdoor unit 20, 21, 23, 24, 298 Air supply section 22 Bathroom air supply section 30, 31, 32, 33, 34 Ducts 40, 41, 43, 44 Exhaust section 50 Heat exchange ventilation unit 51 Heat exchange element 60, 61, 62, 160, 260, 261, 360, 460 Ventilation exhaust section 65, 66, 67, 265, 266, 865, 965 Exhaust duct A 70, 270 junction 71 Exhaust Duct B 75 Outdoor exhaust hood A 76 Exhaust duct C 77 Outdoor air supply hood 78 Air Intake Duct A 79 Filter Box 80 Ventilation intake 81 Air supply duct B 85, 86, 87 Ventilation air intake section 90, 290, 490 exhaust louvers 91, 291, 491 openings 92 Main Unit 93, 293 Duct adapter 94, 294, 494 filters 95, 295, 495 dampers 96, 296 Damper motor 100 doors 161, 361, 461 Ventilation fans 292, 392, 492 Main body (confluence chamber) 297 Ventilation Intake 299 Duct 496 Circulation Fan 497 Heating section 502, 602, 702, 802, 902 Air conditioning and ventilation systems 510 Ceiling 511 Right wall 512 Left wall 513 Bathtub 514 beds 515, 615, 715, 815 Outlet airflow 516, 616, 716 Inflow airflow 517, 617 Outflow airflow 522, 622, 623, 722, 822 Bathroom air supply section 525, 625, 725, 825 Grill 526, 626, 726, 826 main body 527, 627, 727, 827 Duct Adapter 528, 728, 828 Air outlet direction change plate 532, 632, 633, 732, 832 ducts 540, 541 Doors 561 Ventilation and exhaust section 566 Exhaust Duct A 570 Junction 585 Ventilation opening (opening to adjacent room) 586 Ventilation air supply section 587 Windows (exterior openings) 590, 690, 790, 890 Clothes drying pole 591 Opening hole 592 Opening and closing knob 750 Ventilation fan 755 Exhaust duct 756, 856 Exhaust airflow 757 Outdoor Exhaust Hood 961 Ventilation and exhaust chamber (ventilation and exhaust section, confluence chamber) 962 Exhaust Louver 963 Main body (confluence chamber) 964 Duct Adapter 966 Exhaust Duct A 967 Ventilation intake

Claims

1. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air supply unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and the conditioned air is sent to the air supply unit and the bathroom air supply unit, A ventilation air intake section and a ventilation exhaust section are provided in the bathroom and room B, Connecting the return air duct and the ventilation air supply unit, The ventilation exhaust section is connected to the heat exchange ventilation unit, The heat exchange ventilation unit causes the remaining conditioned air to flow from the ventilation air supply unit into the bathroom and the room B, Air C in the bathroom is drawn in through the ventilation exhaust section of the bathroom, air D in the room B is drawn in through the ventilation exhaust section of the room B, and the air C in the bathroom and the air D in the room B are heat-exchanged with outdoor air and then discharged to the outside, An air conditioning and ventilation system characterized in that the outdoor air after heat exchange is introduced into the return air duct or the return section.

2. 2. The air conditioning and ventilation system according to claim 1, wherein a ventilation fan is provided in the ventilation exhaust section of the bathroom.

3. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air supply unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and the conditioned air is sent to the air supply unit and the bathroom air supply unit, A ventilation air intake section and a ventilation exhaust section are provided in the bathroom and room B, Connecting the return air duct and the ventilation air supply unit, The ventilation exhaust section is connected to the confluence chamber and the heat exchange ventilation unit, The heat exchange ventilation unit causes the remaining conditioned air to flow from the ventilation air supply unit into the bathroom and the room B, Air C in the bathroom is drawn in through the ventilation exhaust part of the bathroom, and air D in the room B is drawn in through the ventilation exhaust part of the room B, The confluence chamber combines the air D from the ventilation exhaust part of the room B with the air C from the ventilation exhaust part of the bathroom to form combined air, The combined air is heat exchanged with outdoor air in the heat exchange air unit and then discharged to the outside of the room. An air conditioning and ventilation system, characterized in that the outdoor air after heat exchange with the combined air is introduced into the return air duct or the return section.

4. The air-conditioning ventilation system according to claim 3, wherein a ventilation fan is provided in the ventilation exhaust section or the merging chamber of the bathroom.

5. 4. The air conditioning and ventilation system according to claim 3, wherein the confluence chamber is integrated with the ventilation exhaust part of the bathroom on the ceiling of the bathroom so as to be in contact with the ventilation exhaust part of the bathroom.

6. 6. The air conditioning and ventilation system according to claim 5, wherein the confluence chamber is provided with a ventilation fan, a heating unit for heating and circulating the air C in the bathroom, and a circulation fan.

7. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air supply unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and the conditioned air is sent to the air supply unit and the bathroom air supply unit, The bathroom is provided with an openable outdoor opening and an openable adjacent room opening, By blowing the conditioned air into the bathroom, the air C in the bathroom is caused to flow out at least to one of the outside of the room and the adjacent room through at least one of the outdoor opening and the adjacent room opening, A ventilation air intake section and a ventilation exhaust section are provided in a room B including the room adjacent to the bathroom, Connecting the return air duct and the ventilation air supply unit, The ventilation exhaust section is connected to the heat exchange ventilation unit, The heat exchange ventilation unit Air D in the room B is drawn in through the ventilation exhaust part of the room B, and the air D in the room B is subjected to heat exchange with outdoor air and then discharged to the outside of the room; An air conditioning and ventilation system characterized in that the outdoor air after heat exchange is introduced into the return air duct or the return section.

8. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air blowing unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and blow the conditioned air into the air supply unit and the bathroom air supply unit. The bathroom is provided with a ventilation fan and an opening to an adjacent room that can be opened or closed. The air C in the bathroom is discharged to the outside by the ventilation fan; By blowing the conditioned air into the bathroom, the air C in the bathroom can be selectively discharged into the adjacent room through the adjacent room opening, A ventilation air intake section and a ventilation exhaust section are provided in a room B including the room adjacent to the bathroom, Connecting the return air duct and the ventilation air supply unit, The ventilation exhaust section is connected to the heat exchange ventilation unit, The heat exchange ventilation unit Air D in the room B is drawn in through the ventilation exhaust part of the room B, and the air D in the room B is heat-exchanged with outdoor air and then discharged to the outside of the room; An air conditioning and ventilation system characterized in that the outdoor air after heat exchange is introduced into the return air duct or the return section.

9. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air blowing unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and blow the conditioned air into the air supply unit and the bathroom air supply unit. The bathroom is provided with an openable outdoor opening and a bathroom ventilation exhaust unit, A ventilation intake section and a ventilation exhaust section are provided in room B, Connecting the return air duct and the ventilation air supply unit, The bathroom ventilation exhaust section and the ventilation exhaust section are connected to a heat exchange ventilation unit, By blowing the conditioned air into the bathroom, the air C in the bathroom is discharged to the outside through the outdoor opening; The heat exchange ventilation unit can selectively draw the air C from the bathroom through the bathroom ventilation exhaust section, The heat exchange ventilation unit draws in air D of at least the room B through the ventilation exhaust section of the room B, exchanges heat between the air D of at least the room B and outdoor air, and then discharges the air D to the outside of the room; An air conditioning and ventilation system characterized in that the outdoor air after heat exchange is introduced into the return air duct or the return section.

10. An air intake section and an exhaust section are provided in room A in the building, A bathroom air supply unit is provided in the bathroom. The conditioned air is blown from the air supply unit and the bathroom air supply unit to the room A and the bathroom, A return air path is provided that returns a portion of the conditioned air from the exhaust section of the room A to a return section, A blower and an air conditioning unit are provided in the return section, The air supply unit and the bathroom air supply unit are connected to the air blower unit, The air supply unit and the air conditioning unit produce conditioned air having a temperature difference smaller than the temperature difference between the temperature of the air blown out from the air conditioning unit and the temperature of the room A, and the conditioned air is sent to the air supply unit and the bathroom air supply unit, The bathroom is provided with an openable outdoor opening and a bathroom ventilation exhaust unit, A ventilation intake section and a ventilation exhaust section are provided in room B, Connecting the return air duct and the ventilation air supply unit, a confluence chamber connecting the bathroom ventilation exhaust section and the ventilation exhaust section; Connecting the confluence chamber to a heat exchange ventilation unit; By blowing the conditioned air into the bathroom, the air C in the bathroom is discharged to the outside through the outdoor opening; The heat exchange ventilation unit can selectively draw the air C from the bathroom through the bathroom ventilation exhaust section, The heat exchange ventilation unit draws in air D of at least the room B through the ventilation exhaust section of the room B, exchanges heat between the air D of at least the room B and outdoor air, and then discharges the air D to the outside of the room; An air conditioning and ventilation system characterized in that the outdoor air after heat exchange is introduced into the return air duct or the return section.

11. 11. The air-conditioning ventilation system according to claim 9, wherein the bathroom ventilation exhaust section has an openable / closable damper.

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