JP6412829B2 - Underfloor ventilation system - Google Patents

Description

  The present invention relates to an underfloor ventilation system.

  The following Patent Document 1 discloses a multi-room ventilation device. This multi-room ventilator is provided with a blower, and suction ports respectively provided in a plurality of rooms are connected to the blower. An electric damper that can be opened and closed is provided inside the suction port, and the amount of suction air can be adjusted by operating the electric damper. Therefore, even when the suction air volume varies from room to room due to the difference in ventilation resistance caused by the difference in the distance from the blower to the suction port, the optimum air volume in each room can be secured by adjusting the suction air volume by the electric damper.

JP-A-1-239330

  However, in the underfloor ventilation system disclosed in Patent Document 1, ventilation in the underfloor space of the room is not considered. In general, in the under-floor space of a high-humidity space portion where the humidity is higher than that of other rooms such as a bathroom and a dressing room associated therewith, there is a possibility that air with high humidity may accumulate due to moisture from the bathroom or the like. For this reason, there is a possibility of adverse effects such as generation of mold on the face material which is provided above the underfloor space and which constitutes the first floor surface.

  In view of the above problems, an object of the present invention is to obtain an underfloor ventilation system that can efficiently exhaust high-humidity air that tends to stay in a lower portion of a high-humidity space.

  The underfloor ventilation system according to the first aspect is provided on the first floor surface of the building, and is provided at an air supply port penetrating in the plate thickness direction of the first floor surface and a foundation rising portion. An exhaust port provided with a forced exhaust means that forcibly exhausts the air in the underfloor space that is penetrated in the plate thickness direction of the rising portion and surrounded by the first floor surface, the basic rising portion and the ground; and A high-humidity space portion that is disposed on the floor surface of the first floor and is disposed between the air supply port and the exhaust port in a plan view of the building and includes at least a bathroom and has high humidity. Yes.

The underfloor ventilation system according to a second aspect is the underfloor ventilation system according to the first aspect, wherein the air supply port is provided at a corner of the first floor surface.

The underfloor ventilation system according to the third aspect is the underfloor ventilation system according to the first or second aspect, wherein a sensor capable of measuring humidity is provided in the underfloor space, and the humidity measured by the sensor is from a set value. A control device is provided that activates the forced exhaust means when it is high, and stops the forced exhaust means when the humidity is lower than the set value.

The underfloor ventilation system according to a fourth aspect is the underfloor ventilation system according to the third aspect, wherein the sensor is located between the air inlet and the outer edge of the first floor surface adjacent to the air inlet in a plan view of the building. Is provided.

  The underfloor ventilation system according to a fifth aspect is the underfloor ventilation system according to any one of the second aspect to the fourth aspect, wherein an opening area in a plan view of the building can be adjusted at the air supply port. An opening variable mechanism is provided.

The underfloor ventilation system according to a sixth aspect is the underfloor ventilation system according to the fifth aspect in which at least one of the third and the fourth is cited. In the underfloor ventilation system, the humidity measured by the sensor is higher than a set value. In this case, the opening variable mechanism is controlled to increase the opening area of the air supply port.

  The underfloor ventilation system according to a seventh aspect is the underfloor ventilation system according to any one of the first to sixth aspects, wherein the air supply port is formed by the foundation rising portion on the first floor surface. It is provided in each of a plurality of partitioned areas.

  According to the 1st aspect, the air in underfloor space is discharged | emitted outdoors by the action | operation of the forced exhaust means of the exhaust port provided in the foundation standing part. As a result, negative pressure is generated in the underfloor space, so that air in the first-floor room flows from the air supply opening formed in the first-floor floor surface into the underfloor space. And the air which flowed in the underfloor space flows from the exhaust port to the outdoors. At this time, since the high-humidity space is disposed between the air supply port and the exhaust port in a plan view of the building, air flows through a portion corresponding to the high-humidity space in the underfloor space. Therefore, it is possible to discharge the high-humidity air staying in the portion corresponding to the high-humidity space in the underfloor space to the outside.

According to the third aspect, when the humidity measured by the sensor is lower than the set value, the control device for stopping the operation of the forced exhaust means is provided. Therefore, the energy consumption for operating the forced exhaust means when it is not necessary can be suppressed. Therefore, the operating cost can be suppressed.

According to the fourth aspect, since the sensor is provided between the air supply opening and the outer edge of the first-floor floor surface adjacent to the air supply opening in plan view, the sensor detects air flowing from the air supply opening to the underfloor space. It becomes the composition which does not touch directly. Therefore, the humidity of the air in the underfloor space can be measured more accurately.

According to the 2nd aspect, since an air supply opening is provided in the corner | angular part of the 1st floor floor surface, air flows into the corner | angular part in underfloor space. In general, since air hardly flows at corners in the underfloor space, the air may stay and stagnate. On the other hand, in this aspect, since air flows in the corners, it is possible to suppress the air from staying in the corners and thus in the underfloor space.

  According to the fifth aspect, since the air supply opening is provided with the variable opening mechanism capable of adjusting the opening area in the plan view of the building, the amount of inflow air can be adjusted. That is, when a plurality of air supply ports are provided, a difference in ventilation resistance occurs due to a difference in distance from the air supply port to the exhaust port, so that the amount of inflow air from the air supply port closest to the exhaust port increases. The amount of inflow air from the air supply port far from the exhaust port is reduced. That is, the inflow air amount changes for each air supply port. Therefore, the range from the supply port to the exhaust port with a large inflow air amount is mainly ventilated, and the range from the supply port to the exhaust port with a small inflow air amount is hardly ventilated. For this reason, by reducing the opening area of the air supply port with a large amount of inflow air by the variable opening mechanism and increasing the opening area of the air supply port with a small amount of inflow air by the variable opening mechanism, the inflow air at each air supply port Ventilation can be performed evenly with the same amount.

  According to the sixth aspect, when the humidity measured by the sensor is higher than the set value, the opening area of the air supply port is increased. Therefore, when the air with high humidity is generated in the underfloor space, the ventilation amount can be increased, so that the air with high humidity can be discharged further outdoors.

  According to the seventh aspect, since the air supply port is provided in each of a plurality of ranges partitioned by the basic rising portion on the first floor surface, an air flow is also generated in each range. In general, when divided by the basic rising portion, air does not flow easily within the partitioned range, and thus air may stay and stagnate. On the other hand, in this aspect, since the air supply port is provided in each of a plurality of ranges partitioned by the basic rising portion, an air flow is generated in each range. Thereby, it is possible to suppress air from staying in the underfloor space.

  As described above, the underfloor ventilation system according to the present invention has an excellent effect of efficiently exhausting high-humidity air that tends to stay in the lower part of the high-humidity space.

It is a schematic sectional drawing which shows the building which has the underfloor ventilation system which concerns on 1st Embodiment. (A) is a top view which shows the first-floor floor surface of the building which has the underfloor ventilation system which concerns on 1st Embodiment, (B) is a top view which shows a 1st modification with respect to (A), (C) is a top view which shows a 2nd modification with respect to (A). It is a disassembled perspective view which shows the air inlet of the underfloor ventilation system which concerns on 2nd Embodiment. (A) is the perspective view which made the opening variable mechanism of the underfloor ventilation system which concerns on 2nd Embodiment open, (B) is the perspective view which made the closed state with respect to (A). (A) is a top view which shows the 1st floor surface of the building which has the underfloor ventilation system which concerns on 2nd Embodiment, (B) is a top view which shows a modification with respect to (A). (A) is a top view which shows the 1st floor surface of the building which has the underfloor ventilation system which concerns on 3rd Embodiment, (B) is sectional drawing which shows the state cut | disconnected along the AA line in (A). It is.

(First embodiment)
Hereinafter, a first embodiment of an underfloor ventilation system according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the building 10 includes a foundation 12 and a living room portion 14 provided above the foundation 12. The foundation 12 is a so-called solid foundation, and is configured by placing concrete in the ground 18.

  More specifically, the structure of the foundation 12 will be described. When the ground 18 is excavated to a predetermined depth with respect to the ground surface 20, crushed stone (not shown) is laid, and discarded concrete (leveled concrete) is placed thereon. The local work is done. After finishing the groundwork, foundation reinforcement is performed and concrete is placed, so that the flat base portion 22 along the ground 18 and the upper side in the vertical direction of the building in a direction perpendicular to the base portion 22 A base rising portion 24 that protrudes toward the top is formed.

  A foundation heat insulating material 28 is attached to the building inner side surface 26 of the foundation rising portion 24. This basic heat insulating material 28 is comprised by the resin-type heat insulating material formed in plate shape as an example. The base heat insulating material 28 is extended so that the upper end portion 30 corresponds to the upper end portion 32 of the base rising portion 24 and the lower end portion 34 abuts on the upper surface 38 of the base portion 22.

  A moisture-proof concrete 42 is laid in the underfloor space 40 surrounded by the foundation rising portion 24, the ground 18, and the living room portion 14. The moisture-proof concrete 42 is laid so as to cover the entire ground 18 in the underfloor space 40.

  The foundation rising portion 24 is formed with an exhaust port 44 penetrating in the thickness direction. The exhaust port 44 is provided only at one place, and is formed at the approximate center in the vertical direction of the building in the underfloor space 40. A through hole 46 is also formed in the basic heat insulating material 28 corresponding to the position of the exhaust port 44.

  The exhaust port 44 is provided with an underfloor ventilation fan 48 as discharge means. The underfloor ventilation fan 48 is provided with a fan and a motor (not shown) inside, and operates to discharge the air in the underfloor space 40 to the outdoors. The underfloor ventilation fan 48 is connected to a control device 50 described later by wiring (not shown).

  The first floor 52 of the living room part 14 is formed in a rectangular shape in plan view of the building (see FIG. 2). A foundation rising portion 24 is provided along the outer edge of the first floor 52. The first floor surface 52 is provided with an air supply port 54 penetrating in the thickness direction.

  A cover 56 is provided on the building upper side of the air supply port 54. The cover 56 is formed in a substantially plate shape larger than the air supply port 54 in a plan view of the building, and a plurality of through holes 57 (see FIG. 3) penetrating in the plate thickness direction are formed. As a result, air can pass while suppressing an object from falling from the air supply port 54 to the underfloor space 40.

  As shown in FIG. 2A, a high humidity space 58 is provided on the first floor 52. The high-humidity space portion 58 is disposed at the approximate center of one girder side of the first floor surface 52. Moreover, the high-humidity space part 58 is set as the structure where the bathroom and the dressing room were adjacent, and became high temperature and high humidity compared with another living room. In FIG. 2A, the cover 56 is not shown for easy understanding of the positional relationship between the air supply port 54 and the high humidity space 58.

  The air supply port 54 is provided in the vicinity of the high-humidity space 58 provided on the first floor surface 52. Moreover, the exhaust port 44 is provided in the other side of the air supply port 54 centering on the high-humidity space part 58 in the basic | foundation rising part 24 provided along one girder side. That is, the high humidity space 58 is disposed between the air supply port 54 and the exhaust port 44. In other words, the high humidity space 58 is disposed on the imaginary line L connecting the air supply port 54 and the exhaust port 44.

  A sensor 62 is provided in the underfloor space 40. As an example, the sensor 62 is provided between the air supply port 54 and the outer edge of the first-floor floor surface 52 adjacent to the air inlet 54 in a plan view of the building, and the humidity in the air in the underfloor space 40 can be measured. ing. In FIG. 2A, the size of the sensor 62 is exaggerated for easy understanding of the configuration of the present invention.

  The sensor 62 is connected to the control device 50 by wiring (not shown). Specifically, the control device 50 is mainly configured by a computer having a well-known CPU, ROM, RAM (all not shown) and the like, and the above-described sensor 62 is connected to the input side by wiring (not shown). It is connected. On the other hand, an underfloor ventilation fan 48 is connected to the output side of the control device 50 by wiring (not shown).

(Operation and effect of the first embodiment)
Next, the operation and effect of this embodiment will be described.

  According to the present embodiment, as shown in FIG. 1, the air in the underfloor space 40 is discharged to the outdoors by the operation of the underfloor ventilation fan 48 of the air supply port 54 provided in the foundation rising portion. As a result, negative pressure is generated in the underfloor space 40, so that air in the living room portion 14 flows into the underfloor space 40 from the air supply port 54 formed in the first floor surface 52. The air flowing into the underfloor space 40 flows from the exhaust port 44 to the outside. At this time, as shown in FIG. 2 (A), the high humidity space 58 is disposed between the air supply port 54 and the exhaust port 44 in a plan view of the building. Air flows through a portion corresponding to the space 58. Therefore, it is possible to discharge the high-humidity air staying in the portion corresponding to the high-humidity space 58 in the underfloor space 40 to the outside. Thereby, air with high humidity that tends to stay in the lower part of the high-humidity space 58 can be efficiently discharged.

  Further, the humidity in the underfloor space 40 is measured by the sensor 62. When the control device 50 determines that the measurement result is higher than a preset set value, a signal is output to the underfloor fan 48 so as to operate the underfloor fan 48. Based on this signal, the underfloor fan 48 is operated. On the other hand, when the control device 50 determines that the measurement result of the sensor 62 is lower than a preset set value, a signal is output to the underfloor fan 48 so as to stop the operation of the underfloor fan 48. Based on this signal, the operation of the underfloor ventilation fan 48 is stopped. Therefore, power consumption for operating the underfloor ventilation fan 48 when the humidity is low and ventilation is not necessary can be suppressed. Thereby, an operating cost can be suppressed.

  Furthermore, since the sensor 62 is provided between the air supply port 54 and the outer edge of the first-floor floor surface 52 adjacent to the air supply port 54 in a plan view of the building, the sensor 62 detects air flowing from the air supply port 54 to the underfloor space 40. It becomes the composition which does not touch directly. Therefore, the humidity of the air in the underfloor space 40 can be measured more accurately.

  In the present embodiment, the high-humidity space portion 58 is disposed at the approximate center of one girder side of the first-floor floor surface 52. However, the present invention is not limited to this, and the space between the air supply port 54 and the exhaust port 44 is not limited thereto. As long as the high-humidity space part 58 is disposed, the high-humidity space part 58 may be disposed at another position. That is, as in the first modification shown in FIG. 2 (B), the high-humidity space 58 may be disposed at the corner of the first floor 52, and the second space shown in FIG. 2 (C). As in the modified example, the positions of the air supply port 54 and the exhaust port 44 may be changed, and the high-humidity space 58 may be disposed so as to protrude from one girder side to the outside of the building.

(Second Embodiment)
Next, 2nd Embodiment of the underfloor ventilation system which concerns on this invention is described using FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  The underfloor ventilation system according to the second embodiment is characterized in that the basic configuration is the same as that of the first embodiment, and the air supply port 64 is provided at the corner of the first floor 52.

  That is, as shown in FIG. 5A, a plurality (three in this embodiment) of air supply ports 64 are provided at the corners of the first floor 52. In addition, a sensor 62 is provided between the air supply port 64 and the outer edge of the first-floor floor 52 adjacent to the air inlet 64 in plan view of the building so that the humidity in the air in the underfloor space 40 can be measured. Yes. Further, an exhaust port 44 is provided in the basic rising portion 24 corresponding to a corner other than the corner provided with the air supply port 64. 5A and 5B, the size of the sensor 62 is exaggerated for easy understanding of the configuration of the present invention.

  As shown in FIG. 3, the air supply port 64 is provided with a louver unit 66 as an opening variable mechanism and a cover 56 disposed on the building upper side of the louver unit 66.

  The louver unit 66 has a case 68 that is formed in a substantially rectangular parallelepiped shape that is open in the vertical direction of the building, and a plurality (three in the present embodiment) of the louver unit 66 as shown in FIG. A louver 70 is provided. The louver 70 is formed in a rectangular plate shape, and a rotation center portion 72 is formed at both ends in the longitudinal direction. The rotation center portion 72 is rotatably coupled to the case 68. Further, the three louvers 70 are respectively connected by link arms 74, and the link arms 74 are rotated along the short direction in the plan view of the case by operating means (not shown) to rotate the respective louvers 70. The center portion 72 can be rotated about the longitudinal direction as the axial direction. Therefore, by making the short direction of the louver 70 substantially in the direction along the vertical direction of the building, the opening area in the vertical direction of the building in the case 68 and hence the opening area of the air supply port 64 can be maximized, as shown in FIG. In this way, the air supply port 64 can be fully closed by making the short direction of the louver 70 substantially horizontal. That is, the opening area of the air supply port 64 can be adjusted.

  The louver unit 66 is controlled by a control device 69 as shown in FIG. The sensor 62 described above is connected to the input side of the control device 69 by wiring (not shown). On the other hand, the operating means of the underfloor fan 48 and the louver unit 66 are connected to the output side of the control device 69 by wiring not shown.

(Operation and effect of the second embodiment)
Next, the operation and effect of the second embodiment will be described.

  According to the present embodiment, as in the first embodiment, the air in the underfloor space 40 is discharged to the outdoors by the operation of the underfloor ventilation fan 48 of the air supply port 64 provided in the foundation rising portion. As a result, the pressure in the underfloor space 40 becomes negative pressure, so that the air in the living room portion 14 flows into the underfloor space 40 from the air supply port 64 formed in the first floor surface 52. The air flowing into the underfloor space 40 flows from the exhaust port 44 to the outside. At this time, as shown in FIG. 5A, the high humidity space 58 is disposed between the air supply port 64 and the exhaust port 44 in a plan view of the building. Air flows through a portion corresponding to the space 58. Therefore, it is possible to discharge the high-humidity air staying in the portion corresponding to the high-humidity space 58 in the underfloor space 40 to the outside. Thereby, air with high humidity that tends to stay in the lower part of the high-humidity space 58 can be efficiently discharged.

  Further, the humidity in the underfloor space 40 is measured by the sensor 62. When the control device 69 determines that the measurement result is higher than a preset set value, a signal is output to the underfloor fan 48 so as to operate the underfloor fan 48. Based on this signal, the underfloor fan 48 is operated. On the other hand, when the control device 69 determines that the measurement result of the sensor 62 is lower than a preset set value, a signal is output to the underfloor fan 48 so as to stop the operation of the underfloor fan 48. Based on this signal, the operation of the underfloor ventilation fan 48 is stopped. Therefore, power consumption for operating the underfloor ventilation fan 48 when the humidity is low and ventilation is not necessary can be suppressed. Thereby, an operating cost can be suppressed.

  Further, since the sensor 62 is provided between the air supply port 64 and the outer edge of the first-floor floor surface 52 adjacent to the air supply port 64 in plan view of the building, the sensor 62 detects air flowing from the air supply port 64 to the underfloor space 40. It becomes the composition which does not touch directly. Therefore, the humidity of the air in the underfloor space 40 can be measured more accurately.

  Furthermore, since the air inlet 64 is provided at the corner of the first floor 52, air flows through the corner of the underfloor space 40. In general, since air hardly flows at corners in the underfloor space 40, the air may stay and stagnate. On the other hand, in this embodiment, since air flows into a corner | angular part, it can suppress that an air retains in a corner | angular part and by extension, underfloor space 40. FIG.

  Further, since the air supply port 64 is provided with the louver unit 66 whose opening area in the plan view of the building shown in FIG. 3 can be adjusted, the amount of inflow air can be adjusted. That is, when a plurality of air supply ports 64 are provided, a difference in ventilation resistance occurs due to a difference in the distance from the air supply port 64 to the exhaust port 44, so that the amount of inflow air from the air supply port 64 closest to the exhaust port 44 And the amount of inflow air from the air supply port 64 far from the exhaust port 44 decreases. That is, the inflow air amount changes for each air supply port 64. Therefore, the range from the supply port 64 to the exhaust port 44 where the inflow air amount is large is mainly ventilated, and the range from the supply port 64 to the exhaust port 44 where the inflow air amount is small is hardly ventilated. For this reason, by reducing the opening area of the air supply port 64 with a large inflow air amount by the louver unit 66 and increasing the opening area of the air supply port 64 with a small inflow air amount by the louver unit 66, each air supply port 64. Ventilation can be performed evenly by equalizing the amount of inflow air.

  Further, when the control device 69 determines that the humidity measured by the sensor 62 is higher than the set value, a signal is output to the louver unit 66 to operate the louver 70 of the louver unit 66, and the air supply port The opening area of 64 is increased. Therefore, the amount of ventilation can be increased when high-humidity air is generated in the underfloor space 40, so that the high-humidity air can be discharged further outdoors.

  Furthermore, since the sensor 62 is provided between the air supply port 64 and the outer edge of the first floor 52 in a plan view of the building, the humidity near the air supply port 64 can be measured. That is, when a plurality of air supply ports 64 are provided, the control device 69 detects the air supply port 64 adjacent to the sensor 62 that has measured the highest humidity among the plurality of sensors 62 provided in the same manner as the air supply ports 64. Thus, a signal is output from the control device 69 to the operating means of the louver unit 66 so as to increase the opening area of the air supply port 64. Thereby, the ventilation volume of the location with high humidity can be increased by enlarging the opening area of the air supply port 64 in the vicinity of the sensor 62 that measured the highest humidity. As a result, it is possible to efficiently exhaust high-humidity air to the outdoors.

  In addition, in this embodiment, it is set as the structure by which the three inlets 64 are provided in the corner | angular part of the 1st floor 52, However, Not only this but the inlet 64 of the high humidity space part 58 is provided. It is good also as a structure provided with 2 or 3 or more according to a position and the shape of the 1st floor surface 52. FIG. As an example, as shown in FIG. 5 (B), in the first-floor floor surface 76 formed in an L shape in a plan view of the building, four air supplies are provided at corners other than the corners where the exhaust ports 44 are provided. It is good also as a structure which provided the opening | mouth 64. FIG.

  Moreover, in 1st, 2nd embodiment mentioned above, it is set as the structure which stops the underfloor ventilation fan 48, when the humidity in the underfloor space 40 is lower than a setting value, but not only this but multiple setting values are provided. If the humidity is equal to or higher than a certain set value, the motor rotational speed of the underfloor ventilation fan 48 may be increased to increase the ventilation amount.

(Third embodiment)
Next, 3rd Embodiment of the underfloor ventilation system which concerns on this invention is described using FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  The underfloor ventilation system according to the third embodiment has the same basic configuration as that of the first embodiment, and is divided into ranges A1, A2, and A3 partitioned by the foundation rising portions 80 and 82 on the first floor surface 78, respectively. A feature is that an air supply port 54 is provided.

  That is, as shown in FIG. 6A, the foundation rising portion 24 is provided along the outer edge on the lower side of the building on the first floor surface 78. Two basic rising portions 80 and 82 extending along the wife direction are provided at a substantially central portion of the basic rising portion 24 with a gap therebetween. Therefore, the first-floor floor surface 78 is divided into a plurality of ranges by the basic rising portions 24, 80, and 82 in the building plan view. Specifically, a range A1 surrounded by the basic rising portion 24 and the basic rising portion 80, a range A2 located on the opposite side of the range A1 and surrounded by the basic rising portion 24 and the basic rising portion 82, and a range It is divided into a range A3 located between A1 and the range A2 and surrounded by the basic rising portion 24, the basic rising portion 80, and the basic rising portion 82.

  A ventilation gap (not shown) is provided between the first floor surface 78 and the foundation rising portions 24, 80, 82. In addition, a humanitarian entrance 84 is formed in each of the basic rising portions 80 and 82 at a substantially central portion in the longitudinal direction (see FIG. 6B). The humane entrance 84 is formed so as to be cut out in a substantially U shape from the upper end of the foundation rising portions 80 and 82 to the lower side of the building.

  An air supply port 54 is provided at each corner of the first floor surface 78 opposite to the range A2 in the range A1. In addition, an air supply port 54 is provided at a corner opposite to the corner where the exhaust port 44 is provided in the range A2 of the first floor surface 78. Further, an air supply port 54 is provided on the spar side opposite to the one spar side where the exhaust port 44 is provided in the range A3 of the first floor surface 78. That is, the air supply port 54 is provided in each of the ranges A1, A2, and A3 partitioned by the basic rising portion 80 on the first floor surface 78.

  A sensor 62 is provided in the underfloor space 40. As an example, the sensor 62 is provided between the air supply port 54 and the outer edge of the first-floor floor surface 52 adjacent to the air inlet 54 in a plan view of the building, and the humidity in the air in the underfloor space 40 can be measured. ing. In FIG. 6A, the size of the sensor 62 is exaggerated for easy understanding of the configuration of the present invention. Further, the sensor 62 is connected to the control device 50 by wiring (not shown). An underfloor ventilation fan 48 is connected to the output side of the control device 50 by wiring (not shown).

(Operations and effects of the third embodiment)
Next, the operation and effect of the third embodiment will be described.

  According to the present embodiment, as in the first embodiment, the air in the underfloor space 40 is discharged to the outdoors by the operation of the underfloor ventilation fan 48 of the air supply port 54 provided in the foundation rising portion. As a result, negative pressure is generated in the underfloor space 40, so that air in the living room portion 14 flows into the underfloor space 40 from the air supply port 54 formed in the first floor surface 52. The air flowing into the underfloor space 40 flows from the exhaust port 44 to the outside. At this time, as shown in FIG. 6 (A), the high humidity space 58 is disposed between the air supply port 54 and the exhaust port 44 in a plan view of the building. Air flows through a portion corresponding to the space 58. Therefore, it is possible to discharge the high-humidity air staying in the portion corresponding to the high-humidity space 58 in the underfloor space 40 to the outside. Thereby, air with high humidity that tends to stay in the lower part of the high-humidity space 58 can be efficiently discharged.

  Further, the humidity in the underfloor space 40 is measured by the sensor 62. When the control device 50 determines that the measurement result is higher than a preset set value, a signal is output to the underfloor fan 48 so as to operate the underfloor fan 48. Based on this signal, the underfloor fan 48 is operated. On the other hand, when the control device 50 determines that the measurement result of the sensor 62 is lower than a preset set value, a signal is output to the underfloor fan 48 so as to stop the operation of the underfloor fan 48. Based on this signal, the operation of the underfloor ventilation fan 48 is stopped. Therefore, power consumption for operating the underfloor ventilation fan 48 when the humidity is low and ventilation is not necessary can be suppressed. Thereby, an operating cost can be suppressed.

  Furthermore, since the sensor 62 is provided between the air supply port 54 and the outer edge of the first-floor floor surface 52 adjacent to the air supply port 54 in a plan view of the building, the sensor 62 detects air flowing from the air supply port 54 to the underfloor space 40. It becomes the composition which does not touch directly. Therefore, the humidity of the air in the underfloor space 40 can be measured more accurately.

  Furthermore, since the exhaust port 44 is provided in each of the plurality of ranges A1, A2, A3 partitioned by the foundation rising portions 24, 80, 82 on the first floor surface 78, the respective ranges A1, A2, An air flow is also generated in A3. In general, when divided by the basic rising portions 24, 80, and 82, it becomes difficult for the air to flow in the divided ranges A1, A2, and A3, so that the air may be stagnated. On the other hand, in the present embodiment, the air supply ports 54 are provided in the plurality of ranges A1, A2, A3 partitioned by the basic rising portions 24, 80, 82, respectively. An air flow is generated in A3. Thereby, it is possible to suppress the air from staying in the underfloor space 40.

  In addition, in this embodiment, it is set as the structure provided with the air supply opening 54 penetrated in the plate | board thickness direction of the 1st floor surface 78, However, Not only this but the air supply opening 54 is set as 2nd Embodiment. Similarly, a configuration may be adopted in which the air supply port 64 provided with the louver unit 66 is replaced. Further, the sensor 62 and the control device 69 may be provided to control the louver unit 66 and the underfloor ventilation fan 48.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

10 Building 18 Ground 24 Foundation rising part 40 Under floor space 44 Exhaust port 48 Under floor ventilation fan (forced exhaust means)
50 Control Device 52 First Floor Floor 54 Air Supply Port 58 High Humidity Space 62 Sensor 64 Air Supply Port 66 Louver Unit (Opening Variable Mechanism)
69 Control device 76 First floor surface 78 First floor surface 80 Foundation rising section 82 Foundation rising section A1 Range A2 Range A3 Range

Claims (7)

An air supply opening provided on the first floor of the building and penetrating in the thickness direction of the first floor,
Forced to exhaust the air in the underfloor space that is provided in the foundation rising part and penetrates in the thickness direction of the foundation rising part and surrounded by the first floor surface, the foundation rising part, and the ground to the outside An exhaust port provided with exhaust means;
A high-humidity space part that is disposed on the floor surface of the first floor, is disposed between the air supply port and the exhaust port in a plan view of the building, includes at least a bathroom, and has high humidity.
Underfloor ventilation system. The air supply port is provided at a corner of the floor surface of the first floor,
  The underfloor ventilation system according to claim 1. A sensor capable of measuring humidity is provided in the underfloor space, and the forced exhaust means is activated when the humidity measured by the sensor is higher than a set value, and the forced exhaust means is operated when the humidity is lower than the set value. A control device for stopping the exhaust means is provided;
  The underfloor ventilation system according to claim 1 or 2. The sensor is provided between the air supply opening and an outer edge of the first floor adjacent to the air inlet in a plan view of the building.
  The underfloor ventilation system according to claim 3. The air supply opening is provided with an opening variable mechanism capable of adjusting an opening area in a plan view of the building.
The underfloor ventilation system according to any one of claims 2 to 4. When the humidity measured by the sensor is higher than a set value, the control device is a control unit that operates the opening variable mechanism to increase the opening area of the air supply port.
6. The underfloor ventilation system according to claim 5 , wherein at least one of claim 3 and claim 4 is cited . The air supply port is provided in each of a plurality of ranges partitioned by the foundation rising portion on the first floor surface.
The underfloor ventilation system according to any one of claims 1 to 6.

Images