JP2005291559A - Ventilation system of residence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation system of a residence capable of reducing a desiccant humidity conditioner to such a size that can be stored even at the rear of a ceiling and also capable of reducing operation sound. <P>SOLUTION: This residence 2 comprises a ventilator A for ventilation by discharging an air in the residence to the outside and the desiccant humidity conditioner B which, when the air on the outside is supplied to the inside and the air on the inside is discharged to the outside, exchanges the humidity of the supply and discharge air with a desiccant material 1 to dehumidify or humidify the supply air to the inside or dehumidify and humidify the supply air. The discharge part of the desiccant humidity conditioner B to the outside is allowed to communicate with the discharge part of the ventilator A to discharge from the desiccant humidity controller B by the discharge means of the ventilator A. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a ventilation system that ventilates a general house, and more particularly, to a ventilation system that also has a function of dehumidifying and humidifying air taken in indoors by installing a desiccant humidity controller.

In recent years, due to revisions to the Building Standards Act, regular ventilation (which is called 24-hour ventilation, with a predetermined amount of ventilation according to the volume of the room per unit time) is possible regardless of whether it is a detached house or an apartment house. Ventilation equipment became essential. Among them, there are total heat exchangers and sensible heat exchangers in high-performance constant ventilation equipment. It is also possible to use a desiccant technology that uses a desiccant technology as a highly functional continuous ventilation facility, and not only ventilation but also a desiccant humidity controller that can dehumidify and humidify (for example, as a ventilator with a desiccant humidity controller, (See Patent Literature 1, Patent Literature 2, Patent Literature 3, and Patent Literature 4).
JP 2000-111096 A JP 2003-294267 A JP 2003-74906 A Japanese Patent Laid-Open No. 2002-22241

  By the way, as a configuration of the desiccant humidity controller, in addition to the current total heat exchanger or sensible heat exchanger, a desiccant material and hot water and electric heating means are arranged, and air drawn from the outside by ventilation, Humidity is exchanged with air exhausted from indoors, and dehumidification and / or humidification are performed. For this reason, compared with a mere total heat exchanger or a sensible heat exchanger, the desiccant humidity controller increases the pressure loss inside the device due to the pressure loss of the desiccant material and the change of the air flow direction. Therefore, when trying to ventilate continuously with this desiccant humidity controller, there is a problem that if the ventilation volume is the same, it is necessary to increase the capacity of the fan compared to a mere total heat exchanger, etc. . In addition, compared with a total heat exchanger having the same air volume, there is a problem that the size of the equipment is increased because the desiccant material and the heating device are incorporated. Desiccant technology is a technology that can achieve humidity treatment that is impossible with ordinary air conditioners and can improve indoor comfort, but as a regular ventilation device installed in a house, the operation sound is low, Since it is preferable that the equipment size is small, the size is currently a big wall for using the technology of the desiccant humidity controller.

  The present invention has been invented in view of the above-described conventional problems, and provides a ventilation system for a house that can reduce the operating noise while reducing the size of the desiccant humidity controller to fit in the ceiling of the house. Is an issue.

  In order to solve the above-described problems, a residential ventilation system according to claim 1 of the present invention includes a ventilator A that exhausts indoor air to the outside and ventilates the outdoor air and supplies the indoor air to the indoor air. A desiccant air conditioner B that dehumidifies or humidifies or dehumidifies and humidifies the indoor air supply by exchanging moisture in the desiccant material 1 when exhausting outdoors is provided in the house 2, and the desiccant control The desiccant humidity controller B is exhausted by the exhaust means of the ventilator A by connecting the exhaust part of the humidifier B to the outside and the exhaust part of the ventilator A.

  According to the said structure, when ventilating with the ventilator A, the exhaust of the desiccant humidity controller B can be exhausted also using the exhaust means of the ventilator A. FIG. Thus, the desiccant humidity controller B can be made small even if an exhaust means such as a fan is not required or provided, and the desiccant humidity controller B can be made small and fit in the back of the ceiling of the house. Further, by ventilating the ventilation device A, the fan capacity or the air volume of the desiccant humidity controller B having a large pressure loss can be reduced, and the operation sound can be reduced. Further, the exhaust discharged from the desiccant humidity controller B to the outside is exhausted from the ventilator A different from the desiccant humidity controller B, and the connection port 3 for this exhaust provided in the desiccant humidity controller B and the desiccant humidity controller B It is not necessary to provide the connection port 4 for taking in outdoor air on the same surface, and the positions of the connection ports 3, 4, 5, 6 provided in the desiccant humidity controller B can be determined freely. For this reason, the internal structure of the desiccant humidity controller B also has a higher degree of freedom and can be devised to reduce the dimensions.

  According to a second aspect of the present invention, there is provided a residential ventilation system according to the first aspect, wherein the ventilator A is a constant ventilation device that performs constant ventilation. In this case, it can always ventilate and can be ventilated by the Building Standard Law, and can be dehumidified and humidified by the desiccant humidity controller B. As a whole house, the so-called first type ventilation that forcibly supplies and exhausts air can be performed.

  Further, the residential ventilation system according to claim 3 of the present invention is characterized in that in claim 1 or claim 2, the ventilation device A performs ventilation of at least one of the toilet 8, the dressing room 9 or the bathroom 10. Features. In this case, air is exhausted from the desiccant humidity controller B by the exhaust means of the ventilator A while ventilating so that the air is exhausted to the outside by the ventilator A from at least one of the toilet 8, the dressing room 9, or the bathroom 10. Therefore, comfortable ventilation can be performed while using the ventilation device A essential for the house and without the smell being adsorbed to the desiccant material 1 of the desiccant humidity controller B.

  The residential ventilation system according to claim 4 of the present invention is a bathroom heating / drying machine with a constantly ventilating function in which the bathroom heating / drying machine has a function of constantly ventilating at least one of the toilet 8, the dressing room 9 or the bathroom 10. 11 When supplying outdoor air indoors and exhausting indoor air outdoors, the desiccant material 1 is used to exchange the humidity of the air supply and exhaust to dehumidify or humidify or dehumidify and humidify the indoor air supply. The desiccant humidity controller B is provided in the house 2, and the bathroom heating dryer with a constantly ventilating function is communicated with the outdoor exhaust section of the desiccant humidity controller B and the bathroom heating dryer 11 with the constantly ventilating function. The exhaust air of the desiccant humidity controller B is exhausted by eleven exhaust means. In addition, the said bathroom heating dryer is what performs drying, heating, and ventilation in the bathroom 10, what performs drying and ventilation in the bathroom 10, what performs heating and ventilation in the bathroom 10, and only heating in the bathroom. Including what to do.

  According to the said structure, when always ventilating in the bathroom heating dryer 11 with a regular ventilation function, exhaust of the desiccant humidity controller B can be performed also using the exhaust means of the bathroom heating dryer 11 with a regular ventilation function. Thus, the desiccant humidity controller B can be made small even if an exhaust means such as a fan is not required or provided, and the desiccant humidity controller B can be made small and fit in the back of the ceiling of the house. Further, by ventilating the bathroom heater / dryer 11 with a constantly ventilating function, the exhaust air volume of the desiccant humidity controller B having a large pressure loss can be reduced, and the operation sound can be reduced. Further, the exhaust 3 discharged to the outside from the desiccant humidity controller B is connected to the desiccant humidity controller B 3 for exhausting the exhaust air from the bathroom heater / dryer 11 with a normal ventilation function different from the desiccant humidity controller B 3. It is not necessary to provide the connection port 4 for taking in outdoor air in the desiccant humidity controller B on the same surface, and the positions of the connection ports 3, 4, 5, 6 provided in the desiccant humidity controller B can be freely determined. Can do. For this reason, the internal structure of the desiccant humidity controller B also has a higher degree of freedom and can be devised to reduce the dimensions. In addition, it can be constantly ventilated as stipulated by the Building Standards Law, and it can dehumidify and humidify the air taken in indoors. As a whole house, the so-called first type ventilation that forcibly supplies and exhausts air can be performed. Further, the exhaust means of the bathroom heater / dryer 11 with the constantly ventilating function is ventilated so that the air is exhausted to the outside by the bathroom heater / dryer 11 with the constantly ventilating function from at least one of the toilet 8, the dressing room 9 or the bathroom 10. In order to exhaust air from the desiccant humidity controller B, the odor is not adsorbed to the desiccant material 1 of the desiccant humidity controller B, and comfortable ventilation can be performed. Furthermore, the number of ducts can be reduced and the number of through-holes inside and outside the house 2 can be reduced as compared with the case where the bathroom heater / dryer 11 with a constant ventilation function and the desiccant humidity controller B are separately provided and piped with the duct. It is possible to reduce the number of parts such as a natural air supply port, and at the same time, the cost can be reduced easily.

  According to a fifth aspect of the present invention, there is provided the residential ventilation system according to any one of the first to fourth aspects, wherein at least one of the toilet 8, the dressing room 9 and the bathroom 10 is in the strong mode by the ventilation device A. When ventilating, the amount of exhaust from the desiccant humidity controller B is reduced or cut off. In this case, even if the exhaust air from the desiccant humidity controller B is exhausted by the exhaust means of the ventilator A, a predetermined exhaust amount is obtained when the forced exhaust is locally performed from at least one of the toilet 8, the dressing room 9 or the bathroom 10. Its function is not impaired.

  Since the present invention is configured as described, when the ventilator ventilates, the exhaust of the ventilator can also be used to exhaust the desiccant humidity controller. The effect is that the desiccant humidity controller can be made small and can be made small enough to fit in the back of the ceiling of the house, even if the exhaust means is unnecessary or installed, and the desiccant condition with large pressure loss by ventilating with the ventilator The air volume of the dampener can be reduced and the operation sound can be reduced, and the exhaust discharged from the desiccant humidity controller to the outside is provided in the desiccant humidity controller to be exhausted from a ventilator different from the desiccant humidity controller. It is not necessary to provide the connection port for exhaust and the connection port for taking in outdoor air in the desiccant humidity controller on the same surface. Can decide location freely, inside the structure of the desiccant humidity machine also increases the degree of freedom, there is an effect that will be able to devise to reduce the size.

  In addition, the ventilator can ventilate as defined in the Building Standards Act by constantly ventilating and has the effect of dehumidifying and humidifying the indoor air supply with a desiccant humidity controller. So-called first type ventilation can be performed. In addition, the ventilator ventilates the toilet or dressing room or bathroom, so that the desiccant is performed by the ventilation means of the ventilator while ventilating so that air is exhausted to the outside by the ventilator from the toilet or dressing room or bathroom. The desiccant material of the desiccant humidity control device does not absorb odors because it exhausts air from the humidity control unit, and it has the effect of providing comfortable ventilation, and the ventilation mode of the toilet, dressing room, or bathroom air is strong. When ventilating in a desiccant humidity control device by reducing or blocking the exhaust from the desiccant humidity control device, even if exhausted by the ventilation means of the ventilator, even if forced exhausting locally from the toilet or dressing room or bathroom There is an effect that the function is not impaired. Moreover, even if it uses the bathroom heating dryer with a regular ventilation function as a ventilator, it has the effect that it can ventilate effectively using the function of the bathroom heating dryer with a regular ventilation function.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIG. 1 shows a house 2 such as an apartment house, and a desiccant humidity controller B is installed on the back of the ceiling at a suitable place of the house 2. This desiccant humidity controller B takes in the return air RA from the inside, passes this air through the desiccant material 1 of the desiccant humidity controller B, and exhausts the exhaust EA from the desiccant humidity controller B to the outside, while the outdoor outside air OA Is supplied to the desiccant humidity controller B, and the air is passed through the desiccant material 1 of the desiccant humidity controller B so that the air supply SA is taken into the room from the desiccant humidity controller B. The air supply SA can be dehumidified and humidified by replacement. This desiccant humidity controller B is provided with a connection port 3 for exhaust EA, a connection port 4 for outside air OA, a connection port 5 for return air RA, and a connection port 6 for supply air SA. The port 3 is communicated with the outdoors via an exhaust duct 13, the connection port 4 is communicated with the outdoors via an outside air duct 14, and the connection port 5 is communicated with the interior via a return air duct 15. The connection port 6 is communicated with the indoors through an air supply duct 16.

  In addition to the desiccant humidity controller B, a ventilator A is disposed in the house 2. In this example, a bathroom heater / dryer 11 with a constantly ventilating function is provided on the ceiling of the bathroom 10 as the ventilator A. It is installed. This bathroom heater / dryer 11 with a constantly ventilating function is formed by providing a bathroom heater / dryer that performs drying, heating, and ventilation in the bathhouse 10 with a function of constantly ventilating the toilet 8, the dressing room 9, and the bathroom 10. is there. Also, a toilet suction port 7 is provided in the ceiling of the toilet 8 in order to suck the air in the toilet 8, and the toilet suction port 7 and the bathroom heating / drying machine are communicated by a suction duct 17. In order to suck in the air in the dressing room 8, a dressing room suction port 18 is provided in the ceiling of the dressing room 8, and the dressing room suction port 18 and the bathroom heating dryer are communicated with each other through a suction duct 19. is there. The bathroom heater / dryer 11 with a constantly ventilating function is provided with exhaust means such as a fan for sucking and exhausting air from the inside. In the present invention, the exhaust means of the bathroom heater / dryer 11 with a constantly ventilating function is used. Then, the exhaust air EA of the desiccant humidity controller B is discharged, and the connection port 3 of the desiccant humidity controller B and the bathroom heater / dryer 11 with a constantly ventilating function are communicated with each other through the communication duct 20. Moreover, in order to discharge | emit exhaust_gas | exhaustion from the bathroom heating dryer 11 with a regular ventilation function to the outdoors, the bathroom heating dryer 11 with a regular ventilation function and the outdoors are connected with the outdoor communication duct 21. In the case of the present invention, the communication duct 20 and the outdoor communication duct 21 also serve as the exhaust duct 13 of the desiccant humidity controller B. In the case of this example, an example of the bathroom heater / dryer 11 with a constant ventilation function will be described as the ventilation device A, but this ventilation device A is merely for ventilating indoor air to the outside. Alternatively, ventilation may be performed only by exchanging total heat or sensible heat. It is also preferable that a signal of a strong mode exhaust operation of the bathroom heater / dryer 11 with a constantly ventilating function is detected so that the exhaust amount passing through the communication duct 20 from the desiccant humidity controller B can be reduced or cut off.

  By the way, the desiccant humidity controller B is mostly used for business at present, and has a structure as shown in FIG. The desiccant humidity controller B includes a desiccant material 1 called a desiccant rotor that rotates at a low speed, an air supply fan 23, an exhaust fan 24, and a heater 25 as a heating device that heats with hot water or electricity. When the air supply fan 23 and the exhaust fan 24 are driven by the desiccant humidity controller B and heated by the heater 25a of the heaters 25, the return air RA is heated by the heater 25a, and the return air RA is heated to be the desiccant material. The exhaust EA passing through the desiccant 1 is passed through the desiccant 1, and the exhaust EA passing through the desiccant 1 is discharged to the outside. On the other hand, the outside air OA is dehumidified and passed through the desiccant 1. The supplied air supply SA is supplied indoors. When the air supply fan 23 and the exhaust fan 24 are driven by the desiccant humidity controller B and heated by the heater 25b of the heater 25, the return air RA is absorbed by the desiccant material 1 by passing through the desiccant material 11, The exhaust EA that has passed through the desiccant material 1 is discharged to the outside, while the outside air OA is heated by the heater 25b, and the heated outside air OA passes through the desiccant material 1 to be humidified by releasing moisture from the desiccant material 1, The humidified air supply SA is supplied indoors. As described above, the desiccant humidity controller B shown in FIG. 4 is configured. However, the desiccant humidity controller B has a high device height H and cannot be installed on the ceiling of a general house 2.

  FIG. 5 shows that the problem that the height H becomes high can be solved and the general house 2 can be installed. In this case, the desiccant material 1 is installed sideways. The desiccant humidity controller B is for humidification, and also includes a total heat exchanger 26 or a sensible heat exchanger. When the air supply fan 23 and the exhaust fan 24 are driven by the desiccant humidity controller B and heated by the heater 25, the return air RA is absorbed by the desiccant material 1 through the desiccant material 11 and passes through the desiccant material 1. The exhaust gas EA is discharged to the outside through the total heat exchanger 26, while the outside air OA is heated by the heat obtained from the exhaust gas EA by exchanging heat in the total heat exchanger 26, and this air is heated by the heater 25. Further, the heated outside air OA passes through the desiccant material 1 and is humidified by moisture release from the desiccant material 1, and the humidified air supply SA is supplied indoors. Such a desiccant humidity controller B has a low height H and can be set to a height that fits in the ceiling of a general house 2, but there is a problem that the width W becomes long, and it cannot be installed in a narrow space on the ceiling. A new problem arises. The same applies to the desiccant humidity controller B for dehumidification or the desiccant humidity controller B for dehumidification and humidification.

  Therefore, in the present invention, when the exhaust EA is discharged from the desiccant humidity controller B, the exhaust EA is exhausted by an exhaust means such as a fan of the bathroom heater / dryer 11 with a regular ventilation function as a ventilation device A different from the desiccant humidity controller B. It can be discharged outdoors. Accordingly, the exhaust means such as the exhaust fan 24 provided in the desiccant humidity controller B can be eliminated or provided with a small size. As a result, the width W of the desiccant humidity controller B can be reduced, and the desiccant adjuster B can be made small, and can be installed on the ceiling of a general house 2.

  FIG. 2 shows a desiccant humidity controller B that is reduced in size by eliminating exhaust means such as the exhaust fan 24 (this also shows a humidifier). In this way, the height H of the desiccant humidity controller B can be lowered and the lateral width W can be reduced. When the air supply fan 23 of the desiccant humidity controller B is driven and heated by the heater 25 and is always ventilated by the bathroom heater / dryer 11 with a constant ventilation function, the return air RA passes through the desiccant material 1 so that the desiccant material 1 The exhaust EA that has been absorbed by the desiccant material 1 and exhausted through the total heat exchanger 26 is exhausted to the outside, while the outside air OA exchanges heat with the total heat exchanger 26 to generate heat from the exhaust EA. The heated air is further heated by the heater 25, and the heated outside air OA passes through the desiccant material 1 to be humidified by dehumidification from the desiccant material 1, and the humidified air supply SA is supplied indoors. .

  In addition, ventilation by the bathroom heater / dryer 11 with a regular ventilation function and ventilation through the desiccant humidity controller B allow ventilation of the air volume determined by the Building Standards Act, and reduces the exhaust air volume of the desiccant humidity controller B with large pressure loss. This can reduce the driving noise. In addition, since the outside air can be introduced from the outdoors to the indoor by operating the desiccant humidity controller B, the number of the air inlet members 22 for supplying the air indoors can be reduced or eliminated.

  Further, in the case of the conventional desiccant humidity controller B, the connection port 4 for the outside air OA and the connection port 3 for the exhaust air EA are provided on the same surface for architectural restrictions and duct routing, and the connection for the return air RA. It is necessary to provide the port 5 and the connection port 6 for the supply air SA on the same surface. That is, since the connection port 4 and the connection port 3 need to communicate with the outdoors, it is necessary to pipe the duct so as to be provided on the same side and penetrate the outer wall. However, in the case of the present invention, the connection port 3 does not need to be on the same plane as the connection port 4 because of the structure of exhausting by the exhaust means of the bathroom heater / dryer 11 with a constant ventilation function. The position of can be determined freely. As a result, the degree of freedom of the internal structure of the desiccant humidity controller B is increased, and a device for reducing the dimensions of the desiccant humidity controller B can be achieved. In FIG. 3, the positions of the connection ports 3, 4, 5, and 6 are changed, and the positions of the desiccant material 1, the heater 25, the total heat exchanger 26, and the air supply fan 23 are changed. Thereby, the width W of the desiccant humidity controller B can be further reduced, and the desiccant humidity controller B can be downsized.

  Further, since the exhaust air EA of the desiccant humidity controller B is discharged by the bathroom heater / dryer 11 with a constantly ventilating function, the communication duct 20 and the outdoor communication duct 21 may also serve as the exhaust duct 13 of the desiccant humidity controller B. As compared with the case where the bathroom heater / dryer 11 with a constantly ventilating function and the desiccant humidity controller B are installed irrelevantly, ducts and indoor / outdoor penetrations can be greatly reduced. Thereby, the number of members required for the construction can be reduced and the construction can be facilitated to reduce the cost.

  Moreover, since the desiccant material 1 adsorb | sucks a water | moisture content, it is known that a physically water-soluble odor (ammonia etc.) is taken in. For this reason, when the desiccant material 1 is adsorbed, there is a concern that a water-soluble odor is discharged from the desiccant material 1 together with moisture, particularly in humidified use, and the dirty zone such as the toilet 8, the dressing room 9, the bathroom 10, etc. The point is how to exhaust the air outside the room. However, in the ventilation system of the present invention, the air in the toilet 8, the dressing room 9 and the bathroom 10 is directly sucked and discharged by the bathroom heater / dryer 11 with a constant ventilation function and the bathroom heating / drying with a constant ventilation function. The exhaust EA of the desiccant humidity controller B is discharged by the exhaust means of the machine 11, the amount of return air from the dirty zone to the desiccant humidity controller B is reduced, and the adsorption of odor to the desiccant material 1 is reduced. Expected to decrease.

  Also, when ventilating with a strong mote after using the bathroom 10, toilet 8, undressing room 9, etc. (exhaust with a higher air flow than normal ventilation), the amount of exhaust EA from the desiccant humidity controller B is built into the desiccant humidity controller B. Even if it is exhausted from the desiccant humidity controller B by the exhaust means of the bathroom heater / dryer 11 with a ventilation function, it is locally forcedly exhausted from the toilet 8, the dressing room 9, and the bathroom 10 by reducing or blocking with a damper or the like. At that time, the function of the bathroom heater / dryer 11 with a constant ventilation function can be maintained without impairing its function. In other words, when forced exhausting the bathroom 10, toilet 8 and dressing room 9, it is necessary to increase the air volume of local exhaust, but the bathroom heater / dryer 11 with a constantly ventilating function gives a signal during forced exhaust, so the signal is desiccant. By detecting the humidity controller B and closing the damper of the desiccant humidity controller B, the intake of the return air RA can be reduced or made zero, and the ratio of the exhaust air volume at the location to be exhausted can be increased. Also at this time, the house 2 as a whole can maintain a sufficient ventilation amount, and the function as a constant ventilation system is not lost. Also at this time, since the fan on the path of the outside air OA → the supply air SA is operating, the indoor pressure can be prevented from becoming a negative pressure.

It is a perspective view which shows an example of embodiment of the ventilation system of the house of this invention. An example of a desiccant humidity controller same as the above is shown, (a) is a schematic sectional view seen from the front, and (b) is a schematic sectional view seen from the plane. The other example of a desiccant humidifier same as the above is shown, (a) is a schematic sectional view seen from the front, (b) is a schematic sectional view seen from the plane. It is sectional drawing seen from the front of the desiccant humidity controller for business use. The desiccant humidity controller made thin according to a general house is shown, (a) is a schematic sectional view seen from the front, and (b) is a schematic sectional view seen from the plane.

Explanation of symbols

A Ventilator B Desiccant humidity controller
1 Desiccant material 2 Housing 3 Connection port 4 Connection port 5 Connection port 6 Connection port
8 Toilet 9 Dressing room 10 Bathroom 11 Bathroom heater / dryer with constant ventilation function

Claims (5)

A ventilation device that exhausts indoor air to the outside and ventilates it, and when the outdoor air is supplied indoors and exhausted indoors, the humidity of the supply / exhaust air is exchanged with a desiccant material to the indoors. A desiccant humidity controller for dehumidifying or humidifying or dehumidifying and humidifying the supply air is provided in the house, and the exhaust unit to the outside of the desiccant humidity controller and the exhaust unit of the ventilator are connected to each other. A residential ventilation system characterized in that the desiccant humidity controller is exhausted by an exhaust means. The residential ventilation system according to claim 1, wherein the ventilation device is a continuous ventilation device that performs continuous ventilation. The residential ventilation system according to claim 1 or 2, wherein the ventilation device performs ventilation of at least one of a toilet, a dressing room, and a bathroom. A bathroom heater / dryer with a constantly ventilating function in which a bathroom heater / dryer has a function of constantly ventilating at least one of a toilet, a dressing room, or a bathroom; A desiccant humidity controller for dehumidifying, humidifying, or dehumidifying and humidifying indoor air supply by exchanging the humidity of the supply and exhaust air with a desiccant material when the air is exhausted outdoors, and the desiccant humidity controller The house is characterized in that the desiccant humidity controller is exhausted by the exhaust means of the bathroom heater / dryer with a regular ventilation function by communicating the outdoor exhaust section and the bathroom heater / dryer with a regular ventilation function. Ventilation system. The amount of exhaust from the desiccant humidity controller is reduced or blocked when at least one air in a toilet, a dressing room, or a bathroom is ventilated in the strong mode by the ventilation device. A residential ventilation system according to any of the above.

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