JP6875796B2 - Building ventilation system with underfloor space with air conditioning - Google Patents

Description

The present invention relates to a building ventilation system.

Conventionally, as shown in FIG. 8, for example, a "heat storage layer formed by accumulating and filling a heat storage material that stores geothermal heat such as grit stone" is provided in the space under the floor of the building, and the air from the outside (outside air). In this heat storage layer, heat is exchanged with the geothermal heat, and before or after that, the outside air is exchanged with the geothermal heat in the underground pipe, and the outside air after the heat exchange is supplied to the room. The building ventilation system has been proposed or implemented (see Patent Document 1).

In the conventional example shown in FIG. 8, the underground pipe has a double pipe structure consisting of an outer pipe and an inner pipe. Then, in this conventional example, the outside air is introduced into the gap between the outer pipe and the inner pipe through the vent formed above the outer pipe, descends in the gap, and is underground in the process. While exchanging heat with heat, it collides with the bottom of the outer pipe, then reverses and rises inside the inner pipe, and is discharged from above the inner pipe to the outside (indoors, etc.).

Japanese Patent No. 3030022

The heat storage layer in the underfloor space used in the conventional building ventilation system as described above is extremely effective for exchanging heat with the geothermal heat, etc., but the heat storage material is used throughout the large underfloor space. There is a problem that filling with water leads to an increase in construction cost.

However, on the other hand, when the heat storage material is integrated only in a part of the underfloor space, the construction cost is reduced, but there is a problem that it is difficult to sufficiently exchange the outside air with the geothermal heat. is there.

The present invention has been made by paying attention to such a problem of the prior art, and a heat storage layer for exchanging heat with geothermal heat or the like is formed only in a part of the underfloor space. To provide a building ventilation system with an underfloor space with an air-conditioning function that can sufficiently exchange the outside air with geothermal heat in the underfloor space and then supply it indoors while reducing the construction cost. With the goal.

The building ventilation system provided with the underfloor space with an air conditioning function according to the present invention for solving the above problems includes an outside air introduction unit that introduces outside air from the outside into the underfloor space, and a plurality of each in the underfloor space. A plurality of partition portions for partitioning into small spaces, each of the plurality of small spaces being arranged so as to form along the flow direction of the outside air, and the outside air from one small space to another adjacent small space. It is a plurality of partition portions in which each air passage hole for sequentially circulating the air is formed, and the outside air sequentially flows in each of the small spaces along the periphery (outer peripheral side) of the heat storage layer described later. A plurality of partition portions and a part of the underfloor space forming a plurality of small spaces arranged so as to surround the periphery (outer peripheral side) of the heat storage layer described later so as to flow into the heat storage layer described later. It is a heat storage layer arranged in a part of the small spaces in the plurality of small spaces, and is formed by accumulating, accommodating or arranging a large number of heat storage materials such as grit stones, and sequentially distributes each of the small spaces. In the process of heat exchange with the heat in each small space and in the process of circulating in the underground pipe buried in the ground, the outside air after heat exchange with the underground heat is sent to the inside of itself (heat storage layer). It is a heat storage layer that receives and distributes it inside itself and then supplies it indoors, and the underground pipe is from within the small space adjacent to the small space in which the heat storage layer is arranged in each of the small spaces to the ground. The buried heat storage layer and the outside air are introduced from the outside, and the outside air before or after being sent to the heat storage layer is sequentially circulated inside each of the plurality of small spaces to sequentially circulate the object in the underfloor space. It is equipped with a ventilation fan that operates to exchange heat with each other, and the outside air flows between the small spaces, and the air passage holes facing each other through the small spaces are in the horizontal direction and the gravity direction. The outside air introduced from the outside is first formed and arranged so as to face each other at positions shifted from each other, and the outside air introduced from the outside is first in the small spaces arranged along the periphery (outer peripheral side) of the heat storage layer. The heat storage layer is arranged after heat exchange with the objects in each of the small spaces while sequentially circulating from one small space to another while meandering each other. After being introduced into the underground pipe in the small space adjacent to the created small space and exchanging heat with the underground heat while circulating in the underground pipe, and thus exchanging heat with the underground heat, the heat is exchanged with the underground heat. It is configured to be introduced into the heat storage layer, exchange heat while being circulated inside the heat storage layer, exchange heat inside the heat storage layer, and then be supplied to the interior of the building. It is characterized by being.

Further, in the building ventilation system provided with the underfloor space with an air-conditioning function according to the present invention, in each of the plurality of small spaces through which the outside air is sequentially circulated, the outside air is around the heat storage layer (outer peripheral side). ) Sequentially circulates in each of the small spaces and then flows into the heat storage layer so as to surround the periphery (outer peripheral side) of the heat storage layer.

Further, in the building ventilation system provided with the underfloor space with an air-conditioning function according to the present invention, at least two of the plurality of partitions are opposed to each other in the rear and front in the flow direction of the outside air. The two partition portions arranged in the above may be configured so that the positions of the respective air passage portions are displaced from each other in the horizontal direction and / or the gravitational direction.

Further, in the building ventilation system provided with the underfloor space with an air-conditioning function according to the present invention, a part of the outside air is in the vicinity of the surface of the member or substance that the circulating outside air contacts in the underfloor space or the partition portion. Minor protrusions, protrusions, recesses or irregularities may be formed or provided so as to form a minute vortex.

Further, in the building ventilation system provided with the underfloor space with an air conditioning function according to the present invention, the heat storage layer is heat-exchanged with heat in each small space and buried in the ground in the process of sequentially circulating through each small space. The outside air after heat exchange with the geothermal heat in the process of circulating in the underground pipe may be received inside itself (heat storage layer), circulated inside itself, and then supplied indoors. ..

Further, in the building ventilation system provided with the underfloor space with an air conditioning function according to the present invention, the heat storage layer is a container made of a material having high thermal conductivity, a mesh structure capable of allowing outside air to flow inside and outside the container, or a large number. A plurality of containers having ventilation holes and containing a plurality of heat storage materials therein may be arranged or laminated.

Further, in the building ventilation system provided with the underfloor space with an air-conditioning function according to the present invention, the underground pipe is placed in the ground from the small space adjacent to the small space in which the heat storage layer is arranged in each of the small spaces. It may be buried.

In the building ventilation system provided with the underfloor space with an air conditioning function according to the present invention, the outside air is introduced into the underfloor space by the ventilation fan, and then (before or after being sent to the heat storage layer). In the process of sequentially circulating and passing through the inside of each of a plurality of small spaces (from one small space to another), the heat (inside the underfloor space) possessed by an object such as a foundation rising portion in the underfloor space. In advance, underground heat is conducted and stored by the action of the heat storage layer), and the heat is sufficiently exchanged. Therefore, according to the present invention, the outside air is used in the entire underfloor space while reducing the construction cost by forming the heat storage layer for exchanging heat with the geothermal heat or the like only in a part of the underfloor space. After effectively exchanging heat with the geothermal heat inside, the outside air can be supplied indoors.

Further, in the present invention, each of the plurality of small spaces through which the outside air is sequentially circulated is arranged so as to surround the periphery (outer peripheral side) of the heat storage layer, and the outside air is along the periphery (outer peripheral side) of the heat storage layer. When it is configured to flow into the heat storage layer after being sequentially circulated in each of the small spaces, the outside air flows through the small spaces along the periphery (outer peripheral side) of the heat storage layer. In the process of sequentially circulating (a long distance of each of the plurality of small spaces), heat is sufficiently exchanged with the geothermal heat in the underfloor space, and then the heat flows into the heat storage layer.

Further, in the present invention, at least a part (for example, two) of the plurality of partition portions (for example, a partition portion composed of a foundation rising portion) is positioned rearward and forward in the flow direction of the outside air, respectively. When the partition portions are formed or configured so that the positions of the air passage portions in the partition portions are offset from each other in the horizontal direction and / or the gravity direction, the outside air is around the heat storage layer (outer circumference). When sequentially circulating in each of the small spaces along the side), the outside air circulates and passes through the small spaces while meandering (the meandering increases the residence time of the outside air in each of the small spaces). Therefore, heat exchange with the underground heat or the like in the underfloor space of the outside air can be performed more effectively.

Further, in the present invention, on the surface of the member (object) with which the circulating outside air comes into contact in the underfloor space or the partition portion, minute protrusions or protrusions such that a part of the outside air forms a minute vortex around the surface. When formed or configured to have a portion, a concave portion or an unevenness (for example, a protrusion or a convex portion extending in a direction that obstructs the flow of the outside air), a part of the outside air is minute in the vicinity of the surface of the member (object). The outside air becomes a vortex, that is, the surface of the member (object), that is, the foundation rising portion or the partition portion (in each partition portion, geothermal heat or the like is previously conducted and accumulated by the action of the heat storage layer or the like. ) As a whole, the time and area of contact with the surface of the heat storage layer are increased, so that the outside air is under the floor of the outside air, which is formed in the process of sequentially circulating in each of the small spaces along the periphery (outer peripheral side) of the heat storage layer. Heat exchange with geothermal heat in the space will be performed more effectively.

Further, in the present invention, when the heat storage layer is configured to receive the outside air after heat exchange in the process of circulating in each of the small spaces and the underground pipe and supply it into the room, the underfloor space ( Comfortable outside air that is heat-exchanged with geothermal heat in each small space) and in the underground pipe and then heat-exchanged inside the heat storage layer can be supplied to the room.

Further, in the present invention, the heat storage layer is a container made of a material having high thermal conductivity, a mesh structure capable of allowing outside air to flow inside and outside the container, or a container having a large number of ventilation holes, and a plurality of heat storage materials are used. When a plurality of containers housed inside the container are arranged side by side or laminated, the heat storage layer can be constructed extremely efficiently.

Further, in the present invention, when the underground pipe is buried in the ground from a small space adjacent to the small space in which the heat storage layer is arranged in each small space in the underfloor space. Allows the outside air, which has been heat-exchanged in the underground pipe, to be transferred to the heat storage layer extremely smoothly.

It is a schematic front sectional view which shows a part of the building ventilation system provided with the underfloor space with the air-conditioning function which concerns on Embodiment 1 of this invention. It is a plan sectional view which shows the underfloor space and the foundation rising part of the building in Embodiment 1 from above. It is a side sectional view which shows the underfloor space and the foundation of the building in Embodiment 1 from the side. It is a side sectional view which shows the underfloor space and the foundation of the building in Embodiment 1 from the side. It is a schematic diagram for demonstrating that a minute protrusion or a convex portion is formed in the member or the object which the outside air comes into contact with in the underfloor space in the first embodiment. It is a schematic perspective view for demonstrating each container arranged in a heat storage layer in Embodiment 1. FIG. 5 is a plan sectional view showing the underfloor space of a building and the rising portion of a foundation in a building ventilation system provided with an underfloor space with an air conditioning function according to a second embodiment of the present invention from above. It is a schematic diagram which shows the building ventilation system with the conventional underfloor space.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front sectional view showing a part of a building ventilation system provided with an underfloor space with an air conditioner according to the first embodiment of the present invention, and FIG. 2 shows an underfloor space and a foundation rising portion of the building according to the first embodiment. The plan view, FIG. 3 and FIG. 4 shown from above are side sectional views showing the underfloor space and the foundation of the building in the first embodiment from the side.

In FIG. 1, 1 is an outer wall arranged along the outer periphery of the building, 1a is a foundation arranged below the outer wall 1, and 2 is a foundation arranged in the ground below the outer wall 1 and the foundation 1a (outer circumference of the building). 3 is a partition wall, 3a is a foundation placed below the partition wall 3, 4 is a foundation placed in the ground below the partition wall 3 and the base 3a, and 2a is the outer wall. 1 and the rising portion of the foundation 2 for supporting the foundation 1a, 4'is the rising portion of the foundation 4 for supporting the partition wall 3 and the foundation 3a, and 5 is the floor supported by the foundations 1a, 3a and the like. , 6 are soil concrete constructed on the ground surface between the above-mentioned foundation rising portions 2a, 4', and 10 is an indoor.

Further, in FIG. 1, 5a is an outside air distribution layer formed in the floor 5, and 1b is an outside air distribution layer formed on the indoor 10 side of the outer wall 1 and communicates with the outside air distribution layer 5a in the floor 5. The outside air distribution layer 3b is an outside air distribution layer formed on the indoor 10 side of the partition wall 3 and communicates with the outside air distribution layer 5a in the floor 5. The outside air that has flowed into the outside air flow layer 1b on the outer wall 1 side is supplied to the room 10 from the vent 1d formed in the inner wall surface 1c on the room 10 side. Further, the outside air that has flowed into the outside air flow layer 3b on the partition wall 3 side is supplied to the room 10 from the vent 3d formed in the inner wall surface 3c on the room 10 side.

In the first embodiment, as shown in FIG. 1, the underfloor space 7 is formed by the foundation rising portion 2a below the outer wall 1. Further, the underfloor space 7 is filled with a plurality of small spaces (reference numerals 8a to 8h in FIG. 2) by the partition portion (see reference numerals 4a to 4k in FIG. 2) formed of the foundation rising portion 4'below each partition wall 3. Etc.)).

An underfloor ventilation port 2b (see FIGS. 1 and 2) for introducing outside air (air from the outside) into the underfloor space 7 is formed in a part of the foundation rising portion 2a below the outer wall 1. Further, a total of seven partition portions 4a to 4g in each of the partition portions (see reference numerals 4a to 4k in FIG. 2; each partition portion formed by the foundation rising portion 4'below the partition wall 3) are provided. Vents (reference numerals 9a to 9g in FIGS. 2 to 4) for enabling the flow of outside air between each of the eight small spaces 8a to 8h (see FIG. 2) arranged around the heat storage layer 21. See) are formed respectively.

As described above, in the underfloor space 7 in the first embodiment, a total of eight small spaces 8a to 8h around the small space (the portion constituting the heat storage layer 21) in the center of FIG. 2 (see FIG. 2). Is placed. Then, heat is stored by accumulating and arranging a large number of grit stones inside the small space in the center of the illustration in the underfloor space 7 (the small space surrounded by the eight small spaces 8a to 8h in total). Layer 21 is formed (details will be described later).

Further, in the first embodiment, as shown in FIGS. 1 and 2, one small space among other small spaces (reference numerals 8a to 8h in FIG. 2) arranged so as to surround the small space in the center of the drawing. Within 8h, the underground pipe 11 is buried in the ground within the small space 8h, for example, at a depth of about 1-10 m (more preferably about 4-6 m). The underground pipe 11 is a pipe having a double pipe structure in which the inner pipe 13 is inserted into the outer pipe 12, for example, like the underground pipe disclosed in Patent Document 1. As shown in FIG. 4, the outside air is introduced into the gap 11a (see FIG. 2) between the outer pipe 12 and the inner pipe 13 from the vent in the upper portion of the outer pipe 12 constituting the underground pipe 11. Then, it descends in the gap 11a and exchanges heat with geothermal heat in the process. The outside air that has descended in the gap 11a collides with the bottom of the outer pipe 12, reverses, rises in the inner pipe 13, and is then supplied into the heat storage layer 21 through the horizontal pipe 14.

Further, as shown in FIGS. 2 and 4, a horizontal pipe 14 whose tip portion extends inside the heat storage layer 21 in the central small space is connected to the upper portion of the inner pipe 13. A ventilation fan 15 is arranged inside the horizontal pipe 14. The portion 14a arranged in the heat storage layer 21 of the horizontal pipe 14 is formed in a mesh shape having a large number of openings so that the outside air inside the portion 14a is supplied into the heat storage layer 21 by the ventilation fan 15. (Instead of forming the portion 14a of the horizontal pipe 14 in a mesh shape so that the outside air in the horizontal pipe 14 is supplied into the heat storage layer 21, the portion of the horizontal pipe 14 is formed. A large number of ventilation holes may be formed in 14a).

Further, in the first embodiment, as shown in FIGS. 2 to 4, each of the partition portions 4a to 4g (in the present embodiment 1, each partition portion is composed of a foundation rising portion 4'below the partition wall 3). Vents 9a to 9g are formed in each of the small spaces to enable the flow of outside air between the small spaces. Then, as shown in FIGS. 2 and 3, the vents formed in the respective partition portions adjacent to each other or facing each other are adjacent to each other or facing each other in a state of being displaced in the horizontal direction and the gravitational direction. It is formed at various positions.

Further, in the first embodiment, when the outside air circulates in the small spaces 8a to 8g in the underfloor space 7, the member or object with which the outside air comes into contact, for example, the foundation rising portion 2a located below the outer wall 1. On the inner wall surface of the partition portions (parts composed of the foundation rising portion 4') 4i, 4j, and 4k (see FIG. 2), which are the side wall surfaces of the small spaces 8a to 8f, FIG. The minute protrusions or protrusions 25 as shown in the above are formed, for example, the minute protrusions or protrusions 25 protruding in a direction that hinders the flow of outside air. Due to the minute protrusions or protrusions 25, a part of the outside air circulating in each of the small spaces 8a to 8g becomes a minute vortex around the minute protrusions or protrusions 25 (see K in FIG. 5). ).

Therefore, in the first embodiment, as a result of the minute vortex flowing around each of the minute protrusions or the convex portion 25 as described above, a part of the outside air is around the minute protrusion or the convex portion 25. Since it stays and the residence time of the outside air in each of the small spaces 8a to 8g increases as a whole, the heat exchange of the outside air in each of the small spaces 8a to 8g becomes more effective. .. In the present invention, instead of forming the protrusion or the convex portion 25 on the inner wall surface, a concave portion (a concave portion recessed in a direction intersecting the flow direction of the outside air) or an unevenness is formed on the inner wall surface. You may.

Further, in the first embodiment, a large number of heat storage materials such as gritty stones constituting the heat storage layer 21 are arranged in the heat storage layer 21 in a state where a plurality of heat storage materials are contained in a container. FIG. 6 is a diagram showing an example of such a container. In FIG. 6, 31 is a container formed of, for example, a metal (wooden, plastic, or ceramic) net accommodating a large number of grit stones 30, and 32a and 32b are the ends when the container 31 is opened. The portions and 33 are fixed fittings having a known structure for fixing the ends 32a and 32b in close contact with each other or in contact with each other, and 34 is attached in the vicinity of the ends 32a and 32b on the upper surface side of the container 31. It is a handle. The external dimensions of the container 31 are, for example, 300 mm in length, 500 mm in width, and 400 mm in height.

In the first embodiment, for example, the end portions 32a, 32b on the upper surface side of the container 31 are opened apart from each other, and a large number of grit stones 30 are inserted from the opened portion, and then the end portions 32a, 32b are opened. They are fixed to each other by the fixing bracket 33. Then, in this way, a large number of containers 31 containing a large number of grit stones 30 are arranged and spread in a small space (see FIG. 2) in the center of the underfloor space 7 to form the heat storage layer 21. .. As described above, in the first embodiment, the heat storage layer 21 is formed by arranging and laying a large number of containers 31 containing a plurality of grit stones 30 as described above in a small space. The construction of 21 can be performed more efficiently. The container 31 may be manufactured by using a sheet or the like having a large number of ventilation holes formed without using a net.

Next, the overall operation of the first embodiment will be described. As shown in FIG. 2, the outside air from the outside sequentially flows into the small space 8a from the underfloor ventilation port 2b of the foundation rising portion 2a by the action of the ventilation fan 15. Then, the inflowing outside air circulates in the small space 8a toward the vent 9a in the partition portion 4a with the next small space 8b. Here, the ventilation port 9a of the partition portion 4a is in the horizontal direction (horizontal direction in the drawing) in the horizontal direction (horizontal direction in the drawing) with respect to the position of the ventilation port 2b in the portion facing the partition portion 4a in the foundation rising portion 2a. It is formed in a misaligned position. Further, although not shown, the ventilation port 9a in the partition portion 4a is displaced from the underfloor ventilation port 2b in the foundation rising portion 2a in the direction of gravity (direction orthogonal to the paper surface in FIG. 2). It is formed in a vertical position. Therefore, the outside air circulates in the small space 8a while meandering in the horizontal direction and the gravity direction as shown by the arrow α1.

In this way, the outside air meandering in the small space 8a passes through the vent 9a of the partition portion 4a and flows into the next small space 8b, and the next small space 8b is passed through the small space 8b. It circulates toward the vent 9b in the partition 4b with the space 8c. Here, as shown in FIG. 2, the vent 9b in the partition 4b is in the left direction in the horizontal direction with respect to the position of the vent 9a in the partition 4a (the position on the right side in the drawing 2). It is formed in a position shifted to. Further, although not shown, the vent 9b in the partition 4b is formed at a position deviated from the vent 9a in the partition 4a even in the gravity direction (vertical direction in the drawing). .. Therefore, the outside air circulates in the small space 8b while meandering in the horizontal direction and the gravity direction as shown by the arrow α2.

Next, the outside air meandering in the small space 8b in this way passes through the vent 9b in the partition portion 4b and flows into the next small space 8c, and flows into the small space 8c. , It circulates toward the vent 9c in the partition 4c with the next small space 8d. Here, as shown in FIG. 2, the vent 9c in the partition 4c is located in the right direction (leftward in the drawing in FIG. 2) in the horizontal direction with respect to the position of the vent 9b in the partition 4b. = It is formed at a position shifted in the upward direction in the figure). Further, as shown in FIG. 3, the ventilation port 9c in the partition portion 4c is located at a position deviated from the position of the ventilation port 9b in the partition portion 4b (position lower in the gravity direction) also in the gravity direction. It is formed (upper position in the direction of gravity). Therefore, as shown in FIGS. 2 and 3, the outside air circulates in the small space 8c while meandering in the horizontal direction and the gravity direction as shown by the arrow α3.

Next, the outside air meandering in the small space 8c in this way passes through the vent 9c in the partition 4c and flows into the next small space 8d, and flows through the small space 8d. , It circulates toward the vent 9d in the partition 4d with the next small space 8e. Here, the ventilation port 9d in the partition portion 4d is displaced downward in the drawing in the horizontal direction (upper and lower direction in the drawing) with respect to the position of the ventilation port 9c in the partition portion 4c (upper position in the drawing). It is formed in a vertical position. Further, as shown in FIG. 3, the vent 9d in the partition 4d is displaced from the position of the vent 9c in the partition 4c (upper position in the gravity direction) in the gravity direction. It is formed (at a lower position in the direction of gravity). Therefore, as shown in FIGS. 2 and 3, the outside air circulates in the small space 8d while meandering in the horizontal direction and the gravity direction as shown by the arrow α4.

Next, the outside air that meanders and circulates in the small space 8d in this way passes through the vent 9d of the partition portion 4d and flows into the next small space 8e, and the inside of the small space 8e is introduced. It circulates toward the vent 9e in the partition 4e with the next small space 8f. Here, as shown in FIG. 2, the vent 9e in the partition 4e is in the horizontal direction with respect to the position of the vent 9d in the partition 4d in the horizontal direction (the position shown below in FIG. 2). Is formed at a position that is not displaced (the position on the right side of the drawing in FIG. 2). However, as shown in FIG. 3, the vent 9e in the partition 4e is displaced from the position of the vent 9d in the partition 4d (lower position in the direction of gravity) in the direction of gravity (in the direction of gravity). It is formed in the upper position). Therefore, as shown in FIG. 3, the outside air circulates in the small space 8e while meandering (see FIG. 3) in the direction of gravity as shown by the arrow α5.

Next, the outside air that circulates in the small space 8e while meandering in the direction of gravity (see FIG. 3) passes through the ventilation port 9e of the partition portion 4e and flows into the next small space 8f. , The inside of this small space 8f is circulated toward the vent 9f in the partition portion 4f with the next small space 8g. Here, the ventilation port 9f in the partition portion 4f is displaced in the horizontal direction from the position of the ventilation port 9e in the partition portion 4e (the position on the right side in the drawing 2) (the position on the left side in the drawing 2). Position) is formed. Further, although not shown, the ventilation port 9f in the partition portion 4f is formed at a position deviated from the position of the ventilation port 9e in the partition portion 4e in the gravity direction also in the gravity direction. .. Therefore, the outside air circulates in the small space 8f while meandering in the horizontal direction and the gravity direction as shown by the arrow α6.

Next, the outside air meandering in the small space 8f in this way passes through the vent 9f of the partition portion 4f and flows into the next small space 8g, and the inside of the small space 8g is filled with the outside air. It circulates toward the vent 9g in the partition 4g with the next small space 8h. Here, the ventilation port 9g in the partition portion 4g is displaced in the horizontal direction from the position of the ventilation port 9f in the partition portion 4f (the position on the left side in the drawing in FIG. 2) (the upper side in the drawing in FIG. 2). Position) is formed. Further, although not shown, the vent 9g in the partition 4g is formed at a position deviated in the gravity direction from the position of the vent 9f in the partition 4f in the gravity direction. .. Therefore, the outside air circulates in the small space 8 g while meandering in the horizontal direction and the gravitational direction as shown by the arrow α7.

Next, the outside air meandering in the small space 8g in this way passes through the ventilation port 9g of the partition portion 4g and flows into the next small space 8h. In this small space 8h, a double-structured underground pipe 11 composed of an outer pipe 12 and an inner pipe 13 is buried in the ground with only the upper portion exposed on the ground surface. The outside air flowing into the small space 8h flows into the gap 11a between the outer pipe 12 and the inner pipe 13 constituting the underground pipe 11 by the action of the ventilation fan 15 (arrow α8 in FIG. 2). (See), descending in the gap 11a (see arrow A in FIG. 1). In this process, the outside air is heat-exchanged with geothermal heat. After that, as shown in FIGS. 1 and 4, the outside air descending in the gap 11a enters the inside of the inner pipe 13 after colliding with the bottom of the outer pipe 12, and rises in the inside (arrow in FIG. 1). See B).

As shown in FIG. 4, the outside air that has risen in the inner pipe 13 flows into the horizontal pipe 14 connected to the upper portion of the inner pipe 13. As shown in FIG. 2, the horizontal pipe 14 partitions between the small space 8h and the small space in which the heat storage layer 21 adjacent to the small space 8h is arranged (the small space located in the center of the underfloor space 7 in FIG. 2). It is arranged so as to extend from the small space 8h into the heat storage layer 21 in the next small space through the opening in the partition portion 4h. The outside air that has flowed into the horizontal pipe 14 as described above moves toward the tip vicinity portion 14a in the heat storage layer 21 of the horizontal pipe 14 by the action of the ventilation fan 15, and from the inside of the horizontal pipe 14, the outside air is moved. It is discharged to the outside (heat storage layer 21) via a portion near the tip 14a (a portion in which a large number of ventilation holes are formed in the outer peripheral portion due to the outer peripheral portion being formed of a mesh structure such as a wire mesh) (a portion in which a large number of ventilation holes are formed in the outer peripheral portion). See arrow α9 in FIG. 2; also see arrow C in FIG. 1).

The outside air discharged from the portion near the tip of the horizontal pipe 14 flows into the heat storage layer 21 in which a large number of heat storage materials (grind stones in the first embodiment) are accumulated (see arrow C in FIG. 1). .. The outside air that has flowed into the heat storage layer 21 from the underground pipe 11 is heat-exchanged with each of the heat storage materials (grind stones) 30 in the process of flowing and passing through the gaps between the heat storage materials (grind stones) 30. After that, it flows into the outside air flow layer 5a in the floor 5 (see arrow D in FIG. 1). After that, the outside air flows into the outside air flow layer 3b on the indoor side of the partition wall 3 and the outside air flow layer 1b on the indoor side of the outer wall 1 (see arrow E in FIG. 1), and then enters the inner walls 3c and 1c. It is supplied to each room 10 from the formed vents 3d and 1d, respectively (see arrow F in FIG. 1).

In the first embodiment, the outside air flowing into the heat storage layer 21 from the underground pipe 11 flows and passes through the gaps between the heat storage materials (grind stones) 30. Not only is it heat-exchanged with the heat storage material (grid stone) 30, but it is dried without the water adhering to the surface of each of the heat storage materials (grid stone) 30 (or the water content of each heat storage material (grid stone) 30 adhering to it. Moisture contained in the outside air is controlled between the surface and the surface of the heat storage material (moisture is supplied to the surface of the heat storage material in the dry outside air, and conversely, moisture contained in a large amount of the outside air is applied to the surface of the heat storage material. Along with the outside air humidity control action by each of the heat storage materials due to adhesion and reduction of the humidity of the outside air, dust contained in the outside air is present on the surface of each of the heat storage materials (grind stones) 30 (particularly the surface to which moisture is attached). The outside air is purified (outside air cleaning action by each of the above-mentioned heat storage materials), and the outside air that is heat-exchanged with such underground heat, humidity-controlled, and purified is supplied to the room 10. ..

As described above, in the first embodiment, the outside air is introduced into the underfloor space 7 by the ventilation fan 15, and before being sent to the heat storage layer 21, the plurality of small spaces 8a to 8a. In the process of sequentially circulating and passing through the inside of 8 g, the heat possessed by an object such as the foundation rising portion 2a in the underfloor space 7 (in the underfloor space 7, geothermal heat or the like is generated in advance by the action of the heat storage layer 21 or the like. It will be heat exchanged with (conducted and stored heat). Therefore, according to the first embodiment, the heat storage layer 21 for exchanging heat with the geothermal heat or the like is formed only in a part of the underfloor space 7, thereby reducing the construction cost and allowing the outside air to be underfloor. After effectively exchanging heat with the geothermal heat inside the space 7 as a whole, the outside air can be supplied to the room 10.

Further, in the first embodiment, the plurality of small spaces 8a to 8g are surrounded by the periphery (outer peripheral side) of the heat storage layer 21 (heat storage layer 21 in the small space located substantially in the center of the underfloor space 7). The outside air sequentially circulates in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the heat storage layer 21, and then the heat storage is passed through the underground pipe 11 in the small space 8h. It is configured to flow into layer 21. Therefore, according to the first embodiment, the outside air is the geothermal heat in the underfloor space 7 in the process of sequentially circulating in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the heat storage layer 21. After sufficiently exchanging heat with the heat storage layer 21, the heat flows into the heat storage layer 21.

Further, in the first embodiment, the plurality of partition portions (for example, the partition portion composed of the foundation rising portion 4') are the vents of the partition portions located rearward and front in the flow direction of the outside air. Each position is formed or configured so as to be displaced from each other in the horizontal direction and / or the gravitational direction. That is, in the first embodiment, as shown in FIG. 2, the underfloor ventilation port 2b of the foundation rising portion 2a and the ventilation port 9a of the partition portion 4a, and the respective partition portions 4a of the foundation rising portion 2a located rearward and front in the flow direction of the outside air, respectively. And 4b vents 9a and 9b, each partition 4b and 4c vents 9b and 9c, each partition 4c and 4d vents 9c and 9d, and each partition 4d and 4e vent. The positions of the vents 9d and 9e, the vents 9e and 9f of the partitions 4e and 4f, and the vents 9f and 9g of the partitions 4f and 4g are located in the horizontal direction and / or the gravity direction. It is formed or configured so as to be in a misaligned position. Therefore, according to the first embodiment, when the outside air sequentially circulates in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the heat storage layer 21, the outside air is said to be in each of the small spaces 8a to 8a. It flows and passes through 8 g while meandering in the horizontal direction and / or the gravitational direction (the meandering increases the residence time of the outside air in each of the small spaces 8a to 8g). Therefore, according to the first embodiment, heat exchange with the underground heat or the like in the underfloor space 7 of the outside air can be performed more effectively.

Further, in the first embodiment, the surface of a member or an object (for example, the inner wall surface of the rising portion 2a of the foundation 2 and the rising portion 4 of the foundation 4) that the outside air comes into contact with in the process of circulating in each of the small spaces 8a to 8g. As shown in FIG. 5, the inner wall surface of each partition portion 4i, 4j.4k composed of'is formed with a minute protrusion or a convex portion (such as a minute vortex) in which a part of the outside air forms a minute vortex. It was formed so as to have a protrusion (or convex portion) 25 extending in a direction obstructing the flow of outside air. Therefore, according to the first embodiment, as a result of a part of the outside air forming a minute vortex in the vicinity of the surface, the time and area where the outside air comes into contact with the surface increases as a whole, so that the outside air becomes the heat storage layer. Heat exchange with the geothermal heat in the underfloor space 7 of the outside air in the process of sequentially circulating in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the 21 is performed more effectively. become.

Further, in the first embodiment, the heat storage layer 21 receives the outside air after heat exchange in the process of circulating in each of the small spaces 8a to 8g and the underground pipe 11 and supplies the outside air to the room 10. There is. Therefore, according to the first embodiment, the underfloor space 7 (each small space 8a to 8g) and the underground pipe 11 are heat-exchanged with geothermal heat and the like, and then the heat is further exchanged inside the heat storage layer 21. The outside air can be supplied to the room 10.

Further, in the first embodiment, the heat storage layer 21 is formed of a container made of a material having high thermal conductivity such as metal, a container 31 having a mesh structure capable of allowing outside air to flow inside and outside the container, or a container 31 having a large number of ventilation holes. Therefore, since a large number of containers 31 in which a plurality of heat storage materials 30 are housed are arranged and laminated, the heat storage layer 21 can be constructed extremely efficiently.

Further, in the first embodiment, the underground pipe 11 is buried in the ground from the small space 8h adjacent to the small space in which the heat storage layer 21 is arranged in each small space in the underfloor space 7. Since the structure is configured, the outside air heat exchanged in the underground pipe 11 can be transferred to the heat storage layer 21 extremely smoothly.

[Second Embodiment]
Next, the building ventilation system provided with the underfloor space with an air-conditioning function according to the second embodiment of the present invention will be described with reference to the schematic front sectional view of FIG. 7. Since the basic configuration of the second embodiment is the same as that of the first embodiment, only different parts will be described below.

In the second embodiment, as shown in FIG. 7, similarly to the first embodiment, each of the plurality of small spaces 8a to 8g in the underfloor space 7 is formed into a small heat storage layer 21 (small located substantially in the center of the underfloor space 7). The perimeter (outer peripheral side) of the heat storage layer 21) in the space is arranged so as to surround it for about one week, and the outside air from the underfloor ventilation port 2b flows along the perimeter (outer peripheral side) of the heat storage layer 21. It is configured so that it flows into the heat storage layer 21 through the underground pipe 11 in the small space 8h after being sequentially circulated in the spaces 8a to 8g. Therefore, also in the second embodiment, as in the first embodiment, the outside air is under the floor in the process of sequentially circulating in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the heat storage layer 21. After sufficiently exchanging heat with the geothermal heat in the space 7, the heat flows into the heat storage layer 21.

However, in the second embodiment, unlike the first embodiment, the positions of the vents 9a'to 9g'of the partition portions 4a to 4g that divide the underfloor space 7 into a plurality of small spaces 8a to 8g. , As in the first embodiment, the positions of the vents of the partitions located in the rear and front in the flow direction of the outside air are formed so as to be offset from each other in the horizontal direction and / or the gravity direction. Instead, the positions of the vents 9a'to 9g'are formed so as not to be displaced from each other in the horizontal direction and the gravity direction. Therefore, in the second embodiment, unlike the first embodiment, when the outside air sequentially circulates in each of the small spaces 8a to 8g along the periphery (outer peripheral side) of the heat storage layer 21, the outside air is generated. The effect of flowing and passing through each of the small spaces 8a to 8g while meandering in the horizontal direction and / or the direction of gravity (the meandering increases the residence time of the outside air in each of the small spaces 8a to 8g). Does not occur.

However, the configuration of the second embodiment is the same as that of the first embodiment except for the above configuration. Therefore, also in the second embodiment, the above-mentioned "the outside air flows and passes through the small spaces 8a to 8g while meandering in the horizontal direction and / or the gravity direction (the meandering causes the small spaces 8a to 8g). It is possible to achieve the same effect as that of the first embodiment, except for the effect of increasing the residence time of the outside air inside.

Although the first and second embodiments of the present invention have been described above, the present invention is not limited to those described as the first and second embodiments described above, and various modifications and modifications can be made. For example, in the first and second embodiments, (a) outside air from the outside is sequentially circulated in each of the small spaces 8a to 8g in the underfloor space 7 to exchange heat, and then in the underground pipe 11. It was circulated to exchange heat, and then circulated in the heat storage layer 21 to exchange heat (subsequently supplied to the room 10), but the present invention is not limited to these, and for example, (b) outdoors. The outside air from the above floors is sequentially circulated in each of the small spaces 8a to 8g in the underfloor space 7 to exchange heat, and then circulated in the heat storage layer 21 to exchange heat, and then circulated in the underground pipe 11 to exchange heat. (After that, it is supplied to the room 10), (c) The outside air from the outside is circulated in the heat storage layer 21 in the underfloor space 7 for heat exchange, and then circulated in the underground pipe 11 for heat exchange. In each of the small spaces 8a to 8g in the underfloor space 7, heat is exchanged (subsequently supplied to the room 10), and (d) the outside air from the outside is distributed in the heat storage layer 21 in the underfloor space 7. After that, they are sequentially circulated in each of the small spaces 8a to 8g in the underfloor space 7 to exchange heat, and then circulated in the underground pipe 11 to exchange heat (then supplied to the room 10). , (E) The outside air from the outside is circulated in the underground pipe (for example, the underground pipe buried in the site outside the building) to exchange heat, and then sequentially in each small space 8a to 8g in the underfloor space 7. It is circulated to exchange heat, and then circulated in the heat storage layer 21 in the underfloor space 7 to exchange heat (then supplied to the room 10), or (f) the outside air from the outside is sent to an underground pipe (for example, a building). It is circulated in the underground pipe buried in the outside site) to exchange heat, and then it is circulated in the heat storage layer 21 in the underfloor space 7 to exchange heat, and then each small space 8a to 8 g in the underfloor space 7. Various methods are possible, such as sequentially distributing them in the room to exchange heat (then supplying them to the room 10).

Further, in the first embodiment, the partition portions located at the rear and the front in the flow direction of the outside air are formed so that the positions of the vents are displaced from each other in the horizontal direction and the gravity direction. However, the present invention is not limited to this, and for example, the positions of the vents are formed so as to be displaced from each other only in either the horizontal direction or the gravity direction. May be good.

Further, in the first or second embodiment, the vents 9a to 9g or 9a'in each of the partition portions 4a to 4g formed to sequentially circulate the outside air in each of the small spaces 8a to 8g in the underfloor space 7. ~ 9g'is formed as a hole in each of the partition portions 4a to 4g, but in the present invention, it may be formed as a notch at the end portion in each of the partition portions 4a to 4g.

1 Outer wall 1a, 3a Base 1b, 3b, 5a Outside air flow layer 1c, 3c Inner wall surface 1d, 3d, 9a-9g Vents 2,4 Foundation 2a, 4'Foundation rising part 2b Underfloor ventilation port 3 Partition wall 4a-4k Partition Part 5 Floor 6 Soil concrete 7 Underfloor space 8a-8h Small space 25 Convex part 30 Heat storage material (grind stone)
31 Containers 32a, 32b Each end of the container 33 Fixing bracket 34 Handle

Claims (3)

The outside air introduction part that introduces the outside air from the outside into the underfloor space,
It is a plurality of partition portions that divide the underfloor space into a plurality of small spaces, and is arranged so as to form the plurality of small spaces along the flow direction of the outside air, and is adjacent to the small space. It is a plurality of partition portions in which each air passage hole for sequentially flowing the outside air to other small spaces is formed, and the outside air is described later along the periphery (outer peripheral side) of the heat storage layer. A plurality of partitions forming each of a plurality of small spaces arranged so as to surround the periphery (outer peripheral side) of the heat storage layer described later so as to flow through the space in sequence and then flow into the heat storage layer described later.
A heat storage layer arranged in a part of the underfloor space or in a part of the small spaces in the plurality of small spaces, wherein a large number of heat storage materials such as grit stones are accumulated, accommodated or arranged. In the process of sequentially circulating each of the small spaces, heat is exchanged with the heat in each small space, and in the process of circulating in the underground pipe buried in the ground, the outside air after heat exchange with the geothermal heat is carried out by itself. It is a heat storage layer that is received inside the (heat storage layer) and circulated inside itself and then supplied to the room, and the underground pipe is adjacent to the small space in which the heat storage layer is arranged in each of the small spaces. The heat storage layer buried in the ground from within the small space,
The outside air is introduced from the outside, and the outside air before or after being sent to the heat storage layer is sequentially circulated inside each of the plurality of small spaces to exchange heat with an object in the underfloor space. Equipped with a ventilation fan,
The outside air is formed and arranged so that the air passage holes facing each other in the direction of flowing between the small spaces face each other at positions deviated from each other in the horizontal direction and the gravity direction. The outside air introduced from the outside first meanders in each of the small spaces arranged along the periphery (outer peripheral side) of the heat storage layer, and from one small space to another small space adjacent to the small space. The heat is exchanged with the objects in each of the small spaces while sequentially flowing to the space, and after the heat is exchanged in each of the small spaces in this way, in the small space adjacent to the small space in which the heat storage layer is arranged. It flows into the underground pipe and exchanges heat with the underground heat while flowing through the underground pipe, and after heat exchange with the underground heat in this way, it flows into the inside of the heat storage layer and the heat storage. An air-conditioned underfloor space characterized in that heat is exchanged while being circulated in the layer, and after heat exchange in the heat storage layer, the heat is supplied to the interior of the building. Equipped with building ventilation system. On the surface of the member in the underfloor space or the partition portion to which the circulating outside air comes into contact, minute protrusions, protrusions, recesses or irregularities are formed so that a part of the outside air forms a minute vortex around the surface. A building ventilation system with an air-conditioned underfloor space according to claim 1, which is provided or provided. The heat storage layer is a container made of a material having high thermal conductivity, a container having a mesh structure capable of allowing outside air to flow inside and outside the container, or a container having a large number of ventilation holes, and a container in which a plurality of heat storage materials are stored. However, the building ventilation system provided with the underfloor space with an air-conditioning function according to claim 1 or 2, which is configured by arranging or stacking a plurality of the same.

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