JP5794482B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system, and more particularly to an air conditioning system using geothermal heat.

  Conventionally, various air conditioning systems using geothermal heat have been proposed. For example, Patent Document 1 discloses an external heat exchanger having a double-pipe structure in which an inner tube having both ends opened is loosely fitted in an outer tube having a distal end sealed and the other end opened. An air-conditioning mechanism is disclosed in which a pipe tip is embedded in the ground and air is passed between an inner pipe and an outer pipe to exchange heat with geothermal heat.

JP 2007-303669 A

  However, the air-conditioning mechanism described in Patent Document 1 described above has a complicated structure, and is difficult to install in the basement of an existing house or the like. Moreover, since the member to be used is not common, it is expensive. Also, inspection and maintenance are difficult inside the double pipe structure.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioning system using geothermal heat that is easy to check with a simple structure and is inexpensive.

One of the aspects of the present invention is that a concrete surface placed on the bottom of the underfloor space is used as a bottom surface, and the other surface is surrounded by a heat insulating material different from the formation member of the underfloor space and has a vertically low flat space. A heat exchange chamber provided in the underfloor space having an air inflow hole and an air outflow hole communicating the flat space and the outside on a side surface of the heat insulating material, and the air inflow hole in the heat exchange chamber Is arranged in contact with the concrete surface so as to partition the midway position of the path from the air to the air outflow hole, and is arranged so that the air flowing in from the air inflow hole and flowing out to the air outflow hole flows through the inside A porous heat exchanging member, one opening is provided in the duct attached to the air outflow hole, and at any position inside the duct, and from one opening of the duct to the other opening Blow toward And blowing means for certain as an air conditioning system comprising a.

In another aspect of the present invention, the concrete surface placed on the bottom of the underfloor space is used as the bottom surface, and the other surface is surrounded by a heat insulating material different from the forming member for the underfloor space. A heat exchange chamber provided in the underfloor space, having a flat space, and having an air inflow hole and an air outflow hole communicating the flat space and the outside on a side surface of the heat insulating material; It is arranged in contact with the concrete surface so as to partition the midway position of the path from the air inflow hole to the air outflow hole, and is arranged so that the air flowing in from the air inflow hole and flowing out to the air outflow hole flows inside. A porous heat exchanging member provided, a pile in which a lower portion is buried in the ground, and a portion exposed to the ground is in contact with the heat exchanging member, and one opening is attached to the air outflow hole And the duct Provided within any position of the bets is as an air conditioning system and a blowing means for blowing toward the one opening of the duct to the other opening.

  In another aspect of the present invention, a metal pile having a lower portion embedded in the ground and one open side are loosely fitted so as to cover a portion of the pile exposed on the ground. The air conditioning system includes a certain duct, and a blower unit that is provided at any position inside the duct and blows air from one opening of the duct toward the other opening.

  In addition, the air conditioning system mentioned above contains various aspects, such as being implemented in the state integrated in another apparatus, or being implemented with another method. The present invention can also be realized as an air conditioner in which the air conditioning system is realized as a single device.

  According to the present invention, it is possible to provide an air conditioning system using geothermal heat that has a simple structure, is easy to check, and is inexpensive.

It is a figure explaining 1st Embodiment of an air conditioning system. It is a figure explaining 1st Embodiment of an air conditioning system. It is the figure which expanded and showed the part of the heat exchange part. It is a bottom view of a connection member. It is a side view of a connection member. It is a schematic diagram explaining the relationship between a connection member and the bottom face of a rectification | straightening part. It is a figure explaining 2nd Embodiment of an air conditioning system. It is a figure which shows an example of member arrangement | positioning in 2nd Embodiment of an air conditioning system. It is a figure explaining 3rd Embodiment of an air conditioning system. It is a figure which shows an example of the specific structure of opening.

Hereinafter, embodiments of the present invention will be described in the following order.
(1) 1st Embodiment of an air conditioning system:
(2) Second embodiment of the air conditioning system:
(3) Third embodiment of the air conditioning system:
(4) Summary:

(1) 1st Embodiment of an air conditioning system:
FIG.1 and FIG.2 is a figure explaining 1st Embodiment of an air conditioning system. FIG. 1 is a schematic diagram showing the air conditioning system S1 cut up and down along the air flow generated by the air conditioning system S1, and FIG. 2 is a sectional view taken along line XX ′ of FIG. It is a figure which shows the cross section cut | disconnected along the surface.

  Air conditioning system S1 is comprised so that the air which adjusted temperature with the heat exchange part 10 provided in the underfloor space U of the house H may be sent into the living space L of the house H through a duct. The duct referred to here can be considered as a concept including a duct 13, a stay space 20, and a duct 30 which will be described later. In addition, the air conditioning system S <b> 1 allows the air reduced in dust contained in the air by the heat exchange unit 10 or the stay unit 20 provided between the heat exchange unit 10 and the duct 30 through the duct 30. It is configured to be sent into the living space L of the house H. Hereinafter, a specific configuration of each part of the air conditioning system S1 will be described.

  The house H includes a vent U1 through which air can flow in or out between the outdoor O and the underfloor space U, a heat exchanger 10 installed in the underfloor space U from the living space L side of the house H by a maintenance person, etc. And a staircase ST configured by arranging a plurality of treads and kicks between the side girders. In addition, foundation concrete C is placed on the ground of the underfloor space U. In addition, when providing air conditioning system S1 in the existing house H in which ventilation port U1 is not provided, it is desirable to newly provide ventilation port U1 at the time of construction.

  Note that the house H and the living space L of the house H are given as an example of places where the air-conditioning system S1 sends air, and the target for installing the air-conditioning system S1 is not limited to a building where a person lives. It can be a variety of other buildings. The staircase ST is also given as an example of a location in the building where the air conditioning system S1 sends air. In the case of a house that does not have the existing staircase ST, the staircase ST can be used from other locations such as walls and floors. It can also be configured to deliver air.

  The heat exchanging unit 10 performs heat exchange between geothermal heat and air heat, and includes a pile 11, a porous heat exchanging member 12, a duct 13, and a heat insulating material 14 embedded in a lower part in the ground.

  The pile 11 is made of a material having a higher thermal conductivity than at least the ground or air, and for example, a metal such as iron can be used. The heat exchange member 12 is made of a material having a higher thermal conductivity than at least the ground and air, and for example, a metal wire such as steel wool scrubber can be used. In addition, the thickness of a wire shall be suitably selected so that heat conductivity may become favorable. In addition, gravel and iron sand can also be used for heat exchange.

  FIG. 3 is an enlarged view of a portion of the heat exchange unit 10 in FIG. As shown in the figure, the pile 11 includes an embedded portion 11a embedded in the ground and an exposed portion 11b exposed above the ground surface. The length of the buried portion 11a and the exposed portion 11b is appropriately selected according to the situation such as the height of the underfloor space U of the house H to be constructed, but at least the foundation concrete C is used for the buried portion 11a. It is set as the length which extends to the position deeper than the placement depth of and reaches the ground G.

  The reason for making the length of the buried portion 11a in this way is that the underground temperature Tg of the ground G is more likely to fluctuate due to fluctuations in the outside air temperature Ta as it is closer to the ground surface, but there is little fluctuation at deeper locations, for example, This is because it is stable at 17 ° C. or the like. For this reason, the temperature of the pile 11 is stabilized at the temperature close | similar to the stable underground temperature Tg0 compared with outside temperature Ta, so that the length of the embedment part 11a extends to a deeper position. However, in practice, the pile 11 is deeply embedded and the depth is appropriately selected in consideration of the work load and the cost of construction.

  In the present specification, a portion deeper than the basic concrete C is referred to as the ground G, and the average temperature of the underground temperature at a certain depth or more at the installation location of the air conditioning system S1 is referred to as a stable underground temperature Tg0. To do. Ideally, the stable underground temperature Tg0 indicates an underground temperature at a depth where there is no temperature fluctuation throughout the year or day.

  The buried portion 11a of the pile 11 is insulated from the ground by covering with a heat insulating material 14 except for a portion in contact with the ground having a desired underground temperature Tg. For example, in the buried portion 11a, the portion in contact with the foundation concrete C is buried while being covered with the heat insulating material 14, and the portion buried deeper than the foundation concrete C is buried so as to be in direct contact with the ground. It is.

  In the heat exchanging unit 10 configured as described above, the pile 11 is affected by the outside temperature Ta of the air in contact with the exposed part 11b, but the ground surface in contact with the buried part 11a compared to the outside temperature Ta. The temperature is close to the medium temperature Tg. That is, the temperature Tx in the exposed portion 11b of the pile 11 is close to the stable underground temperature Tg0. Specifically, in Japan, the temperature Tx of the exposed portion 11b of the pile 11 is higher than the outside temperature Ta in the winter because the underground temperature Tg is higher than the outside temperature Ta. Since the intermediate temperature Tg is lower than the outside air temperature Ta, it becomes lower than the outside air temperature Ta.

  A duct 13 is connected to the exposed portion 11 b of the pile 11. In the duct 13, a part of the exposed portion 11 b of the pile 11 is loosely fitted in one opening 13 a, and the other opening 13 b is connected to the staying portion 20. The inner diameter r2 of the duct 13 is larger than the outer diameter r1 of the pile 11. For example, when the inner diameter of the duct 13 is about 10 cm, the outer diameter of the pile 11 is about 8 cm. Thereby, when the exposed part 11b of the pile 11 is loosely fitted in the opening 13a of the duct 13, a gap Ap1 is formed between the duct 13 and the pile 11. This gap Ap1 is desirably formed uniformly around the exposed portion 11b of the pile 11.

  The loose fitting length d2 of the exposed portion 11b of the pile 11 with respect to the opening 13a of the duct 13 is such that a gap Ap2 having a length d3 remains between the opening 13a and the ground surface, where d1 is the length of the exposed portion 11b. Designed. As a result, external air can flow into the opening 13a through the gap Ap2, and air that has flowed into the opening 13a can flow into the duct 13 through the gap Ap1.

  A heat exchange member 12 is interposed in the gap Ap1. The heat exchanging member 12 has a temperature close to the stable underground temperature Tg0 as compared with the outside air temperature Ta by transferring heat to and from the pile 11. This is because the heat exchange member 12 is a material having a high thermal conductivity as described above, and transmits heat with a high heat transfer rate by contacting the pile 11 which is also a member having a high thermal conductivity. .

  And when air passes clearance gap Ap1, heat exchange is performed by contacting the exposed part 11b and the heat exchange member 12, and the air which flows in the inside of a duct through the heat exchange member 12 is outside air temperature. The temperature is close to the underground temperature Tg compared to Ta.

  Further, since the heat exchange member 12 is a porous member having a wide contact area with air, the heat exchange efficiency between the air passing through the gap Ap1 and the heat exchange member 12 is improved, and the duct is formed from the opening 13a. The air flowing into 13 is adjusted to a temperature closer to the underground temperature Tg. Specifically, the temperature is adjusted to be warmer in winter, and is adjusted to be cooler in summer. In this way, the air whose temperature has been adjusted flows from the duct 13 into the staying portion 20.

  The staying portion 20 has a substantially sealed space surrounded by a heat insulating material, except for the connection portion with the duct 13 and the duct 30. As the heat insulating material surrounding the staying portion 20, for example, high-quality styrene foam as a heat insulating material used as a general building material is used. In the staying part 20, an opening 21 connected to the opening 13 b of the duct 13 of the heat exchanging part 10 and an opening 22 connected to the air inlet 31 of the duct 30 via a connecting member 33 are formed.

  The staying section 20 has an air flow path cross-sectional area larger than that of the duct 13 or the duct 30, and before the air that has flowed into the duct 13 from the outside of the air conditioning system S1 and exchanged heat is supplied to the living space L. To stay temporarily. For this reason, the air flowing from the duct 13 into the staying portion 20 has a significantly reduced flow velocity in the staying portion 20, and dust and dust mixed in the air easily settle and accumulate in the staying portion 20. . Thereby, dust can be reduced from the air that flows out into the duct 13 and is supplied into the house H. In addition, the retention part 20 may be provided with a filter or the like for removing dust or the like to improve dust removal efficiency.

  The duct 30 connected to the opening 22 of the staying part 20 communicates between the staying part 20 and the rectifying part 50 as a box-like part formed under the stairs ST of the living space L of the house H. An air inlet 31 connected to the opening 22 of the retention part 20, a connection member 33 used for connection between the opening 22 and the air inlet 31, an air outlet 32 connected to the rectifying part 50, and an air outlet 32 and a connecting member 34 used for connecting the rectifying unit 50. In addition, a fan 40 serving as a blowing unit is disposed inside the connecting member 33 as a midway position in the duct 30.

  The fan 40 is a blowing unit that generates an air flow in the air conditioning system S <b> 1 and blows air in a direction in which air flows from the air inlet 31 to the air outlet 32 of the duct 30. A controller (not shown) for controlling the operation of the fan 40 is provided at a predetermined location in the house H, and the on / off of the fan 40 is controlled by operating this controller or the rotation speed of the fan 40 is changed. Can be. Of course, the fan 40 may be always rotated without providing a controller. Note that the position where the fan 40 is provided is not limited to the inside of the connection member 34, and may be provided in another part as long as it is inside the duct 30 or the duct 13.

  The connecting member 33 is a hat type in which a disk-shaped flange is provided in one opening of the cylindrical portion, and a part of the cylindrical portion is formed outside the opening 22 while the flange is in close contact with the inner wall side of the staying portion 20 on the opening 22 side. In a state in which is exposed, for example, a heat-retaining filler is filled between the opening 22 and the cylindrical portion, thereby being fixed to the staying portion 20. The outer diameter of the cylindrical portion substantially coincides with the diameter of the opening 22 and the inner diameter of the air inlet 31 of the duct 30. By connecting the air inlet 31 of the duct 30 to the exposed portion of this cylindrical portion, the staying portion 20 and the duct 30 are connected in communication.

  FIG. 4 is a bottom view of the connection member 34, and FIG. 5 is a side view of the connection member 34. The connecting member 34 is a hat type in which a substantially rectangular flange portion 34a is provided at the edge of one opening of the cylindrical portion 34b, and projections 34c are formed at the corners of the cylindrical portion 34b and the flange portion 34a on each side of the flange portion 34a. Correspondingly, one is formed. The cylindrical portion 34b is disposed at the approximate center of the substantially rectangular flange portion 34a.

  The connecting member 34 is, for example, an opening 52 in a state where a part of the cylindrical portion 34b is exposed from the opening 52 to the outside of the rectifying unit 50 while the flange portion 34a is in close contact with the inner wall side on the opening 52 side of the rectifying unit 50 The rectifying unit 50 is fixed by filling a heat insulating filler between the cylindrical portions 34b. The outer diameter of the cylindrical portion 34 b substantially matches the inner diameter of the air outlet 32 of the duct 30, and the air outlet 32 of the duct 30 is connected to the exposed portion of the cylindrical portion 34 b fixed to the rectifying portion 50. Thus, the rectifying unit 50 and the duct 30 are connected in communication.

  There is a staircase ST in the living space L of the house H, and a rectifying unit 50 is provided below any of the treads. FIG. 1 shows a state in which the rectifying unit 50 is provided below the first step surface ST1a of the staircase ST, but the installation location of the rectifying unit 50 is below the second step or other steps. Also good. The rectifying unit 50 is insulated from the outside by, for example, forming the rectifying unit 50 itself with a heat insulating material or covering the periphery with a heat insulating material, except for a ventilation structure 51 and an opening 52 described later.

  FIG. 6 is a schematic diagram for explaining the relationship between the connection member 34 and the bottom surface of the rectifying unit 50. The figure shows the inner bottom surface of the rectifying unit 50 with the connecting member 34 attached to the rectifying unit 50 as viewed from the inside of the rectifying unit 50. As shown in the figure, the bottom surface of the rectifying unit 50 is substantially rectangular, and a rectangular opening 52 is formed at a substantially central portion of the bottom surface of the rectifying unit 50.

  For this reason, it is possible to change the position of the connecting member 34 to an appropriate position corresponding to the positional deviation of the hole formed in the floor surface F in order to allow the duct 30 to be inserted.

  Further, the flange portion 34a of the connection member 34 is rectangular (substantially square in FIG. 6). And the rectification | straightening part 50 and the connection member 34 are formed so that it may have the following relationship. That is, between the size of the bottom surface of the rectifying unit 50 or the opening 52 and the size of the connection member 34, the side 34 a 1 of the flange portion 34 a contacts the side 501 of the rectifying unit 50, and the side surface of the cylindrical portion 34 b is the side 521 of the opening 52. The side 34a2 that is the opposite side of the side 34a1 is positioned closer to the side 502 of the rectifying unit 50 than the side 522 of the opening 52. Further, the side 34a4, which is the opposite side of the side 34a3, is in a state where the side 34a3 is in contact with the side 503 of the rectifying unit 50 or the side surface of the cylindrical part 34b is in contact with the side 523 of the opening 52. It is formed so as to be located closer to 50 sides 504. Accordingly, the connection member 34 can reliably close the opening 52 while allowing the connection member 34 to be displaced within a range in which movement of the connection member 34 is restricted by the opening 52.

  In addition, a protrusion extending in the length direction of the cylinder is formed at a corner portion between the flange portion 34a of the connection member 34 and the outer surface of the cylindrical portion 34b. Thereby, when filling the peripheral surface of the cylindrical portion 34b of the connecting member 34 and fixing the connecting member 34, the protrusion and the filler are engaged with each other so that the connecting member 34 is stably fixed.

  Returning to FIG. A ventilation structure 51 is formed on the side surface of the rectifying unit 50 on the side of the kick ST1b so that the inside of the rectifying unit 50 can be ventilated while visually obscuring the inside of the rectifying unit 50 from the outside. The ventilation structure can be a slit structure, for example. In addition, when there is a kick plate in the kick ST1b, the kick plate is removed, or an opening is provided in a portion that contacts the rectifying unit 50, or a slit structure is formed so as to allow ventilation. deep.

  As a result, the air blown upward from the fan 40 toward the rectifying unit 50 is converted into a direction toward the kick ST1b in the blowing direction, and is gently sent from the kick ST1b of the staircase ST toward the living space L. Will be. Therefore, compared with the case where the fan 40 directly blows air into the living space, the wind force is reduced, and air can be gently fed into the living space L at a uniform wind speed without causing discomfort to the resident.

  In the air conditioning system S1, the heat exchanging unit 10 and the staying unit 20 are disposed below the opening 60 provided in the floor surface F of the living space L. A lid member or a door is attached to the opening 60 so that the opening 60 can be opened and closed. Thereby, construction becomes easy for the contractor who installs the air conditioning system S1 in the house H, and work is also facilitated when performing inspection and maintenance of the air conditioning system S1. In addition, about the house H in which the opening 60 was not previously formed in the floor surface F, it is desirable to newly provide the opening 60 at the time of construction of air conditioning system S1.

  Here, a specific example of the opening 60 will be described. FIG. 10 is a diagram illustrating an example of a specific configuration of the opening 60. 10A is a schematic cross-sectional view showing a state of being cut up and down at a position passing through the opening 60, and FIG. 10B shows a positional relationship between the large drawing pillar and the reinforcing material and the lid covering the opening 60. It is a see-through view seen from above.

  As shown in FIG. 10, the floor F of the house H is formed by placing a reinforcing plywood 604 on the large pulling columns 601 and 602 and laying a tatami mat 606 or the like on the reinforcing plywood 604 as necessary. The large pull columns 601 and 602 are horizontal members that are attached at regular intervals (generally 900 mm to 1000 mm) between the bases 607 that support the floor of the first floor portion. In addition, reinforcing members (such as joists) 603a and 603b that reinforce the large drawing columns 601 and 602 are horizontally installed at appropriate intervals in a direction orthogonal to the large drawing columns 601 and 602, as necessary.

  The opening 60 is formed by providing a non-laying portion H of the reinforcing plywood 604 in a predetermined range of the floor F. In FIG. 10, the non-laying portion H is substantially rectangular, and for the sides H1 and H2 facing the rectangle, the side H1 is located in the middle of the width direction on the upper surface of the large drawing column 601 and the side H2 is the large drawing column. It is formed so as to be located in the middle of the width direction on the upper surface of the large pulling column 602 adjacent to 601. The lid portion 610 of the opening 60 has a shape that substantially matches the shape of the non-laying portion H. As a result, the edge portion on the side H <b> 1 side is placed on the upper surface of the large drawing column 601, and the edge portion on the side H <b> 2 side is placed on the upper surface of the large drawing column 602.

  Moreover, about the other opposing sides H3 and H4 of the non-laying place H, the side H3 is located in the middle on the upper surface in the width direction of the reinforcing material 603a, and the width direction of the reinforcing material 603b adjacent to the reinforcing material 603a. It is formed so that it may be located in the middle on the upper surface. Thereby, the edge part by the side of the edge | side H3 is mounted in the upper surface of the reinforcing material 603a, and the edge part by the side of the edge | side H4 is mounted in the upper surface of the reinforcing material 603b.

  The opening formed as described above is slightly larger than the opening that continues below the floor in a conventional general house. Therefore, workability at the time of providing the air conditioning system of this embodiment or performing maintenance in an existing house is improved.

  In addition, since the opening under the floor in a conventional house is generally narrower than the distance between the large columns, it is necessary to prepare a separate frame material that supports the lid at the edge of the opening. there were. On the other hand, since the opening 60 described above employs a structure that supports the lid portion by a large drawing column or a reinforcing material, such a dedicated frame material is unnecessary, and the installation is easy and the installation cost is reduced. Low price can be realized. Further, if an opening is formed under the tatami 606, the opening 60 and the lid 610 are concealed so that the aesthetic appearance is not impaired.

  According to the air conditioning system S1 described above, air having a simple structure and a temperature closer to the underground temperature Tg than the outside air temperature Ta can be blown into the house. Further, since the air is sent to the living space after the dust is reduced, the living space is not easily contaminated. The stay part for reducing the dust can also be realized with a simple structure. Furthermore, since it is realizable without using a special member, it is realizable at low cost. In addition, construction, inspection, and maintenance are easy.

(2) Second embodiment of the air conditioning system:
FIG. 7 is a diagram illustrating a second embodiment of the air conditioning system. The air conditioning system S <b> 2 shown in the figure sends air whose temperature is adjusted using geothermal heat to the living space L of the house H. In addition, about the structure of the house H, since it is the same as that of 1st Embodiment, description is abbreviate | omitted below.

  In the figure, an air conditioning system S2 includes a heat exchange chamber 110 for exchanging heat between geothermal heat and air heat, a duct 130 for sending air sucked from the outside and heat exchanged into a living space L of a house H, and And a fan 140 for generating an air flow in the air conditioning system S2. The air flow generated by the fan 140 flows through the heat exchange chamber 110 and the duct 130.

  The heat exchange chamber 110 includes a pile 111 having a lower portion embedded in the ground, a porous heat exchange member 112, and a heat exchange chamber 113 formed of a heat insulating material. The pile 111 is made of a material having high thermal conductivity, and is made of metal such as iron, for example. The heat exchange member 112 is made of a porous material, and for example, a metal wire (for example, steel wool scrubber) having high thermal conductivity, gravel, or iron sand can be used. As the heat insulating material forming the heat exchange chamber 113, for example, hard styrene foam which is a heat insulating material used as a general building material can be used.

  The pile 111 includes an embedded portion 111a embedded in the ground and an exposed portion 111b exposed on the ground surface. The lengths of the buried portion 111a and the exposed portion 111b are appropriately selected according to the situation of the house H to be designed and constructed, but the buried portion 111a is the same as in the first embodiment described above. It is desirable that the length extends to a position deeper than the concrete placement depth. On the other hand, the exposed portion 111b is not necessarily formed, and it is sufficient that at least the top surface of the pile 111 has a certain length on substantially the same plane as the ground surface.

  Moreover, the embedding part 111a of the pile 111 is grounded by covering with the heat insulating material 117 except the part which touches the ground of desired underground temperature Tg similarly to the case of the air conditioning system S1 according to the first embodiment described above. Insulated between.

  In the underfloor space U, a heat exchange chamber 113 having a flat space that is low in the vertical direction is formed around the buried pile 111. In the heat exchange chamber 113, the bottom surface is configured by the surface of the foundation concrete C in which the pile 111 is embedded, and the top surface and the side surface are formed by a heat insulating material. As the heat insulating material forming the upper surface and the side surface of the heat exchange chamber 113, a heat insulating material used as a general building material such as hard styrene foam can be used. The heat insulating material and the concrete surface forming the heat exchange chamber 113 are firmly fixed to each other using anchor bolts or the like.

  The heat exchange chamber 113 is formed with an air inflow hole 114 and an air outflow hole 115 that penetrate the inside and outside of the side surface made of a heat insulating material. The heat exchange member 112 described above is arranged in the middle of the air inflow hole 114 and the air inflow hole 115 so as to partition the flat space. Thus, the air that flows in from the air inflow hole 114 and flows out of the air inflow hole 115 always passes through the heat exchange member 112 and is heat-exchanged.

  In addition, the heat exchange member 112 is disposed in contact with the above-described pile 111, and as described in the first embodiment, the temperature of the heat exchange member 112 is around the buried portion 111a of the pile 111 as compared to the outside air temperature Ta. The temperature is close to the ground temperature Tg of the ground. For this reason, the air that has passed through the heat exchange member 112 is adjusted to a temperature that is closer to the underground temperature Tg compared to the outside air temperature Ta. In addition, the number of the piles 111 is not specifically limited, According to the arrangement area of the heat exchange member 112, the number of 1 or more can be selected suitably.

  A predetermined filter can be disposed in the air inflow hole 114. As the predetermined filter, various filters such as a filter for removing dust and dirt in the air and a filter for removing odors can be appropriately employed depending on the environment in which the air conditioning system S2 is arranged. Thereby, an unnecessary thing can be removed from the air which air conditioning system S2 sends into living space.

  In addition, the air outlet hole 115 is connected to the opening 131 of the duct 130 using a hat-type connecting member 133 similar to the connecting member 33 according to the first embodiment described above. In addition, the opening 132 of the duct 130 is connected to the lower surface of the rectifying unit 150 similar to the rectifying unit 50 according to the first embodiment described above using the connection member 134 similar to the connection member 34.

  A fan 140 is provided inside the connecting member 134, and when the fan 140 rotates, an air flow is generated in a direction from the opening 131 toward the opening 132. Thereby, the air heat-exchanged in the heat exchange chamber 113 is sent to the living space L from the ventilation structure formed on the side surface of the rectifying unit 150 through the duct 130.

  In addition, arrangement | positioning of each part which comprises the heat exchange chamber 110 can be changed variously, for example, the arrangement | positioning shown in FIG. 8 is illustrated.

  In the example shown in FIG. 8, one air outflow hole 115 is formed substantially at the center of the upper surface of the heat exchange chamber 110, and the heat exchange member 112 is placed in the heat exchange chamber 110 so as to surround the air outflow hole 115. Are arranged in a ring shape, and a plurality of air inflow holes 114 are formed concentrically on the upper surface of the heat exchange chamber 110 around the heat exchange member 112. Also in the example shown in FIG. 9, the air flowing in from the air inflow hole 114 and flowing out of the air outflow hole 115 always passes through the heat exchange member 112. Note that the positional relationship among the air inflow hole 114, the heat exchange member 112, and the air outflow hole 115 is such that the air that flows in from the air inflow hole 114 and flows out of the air outflow hole 115 passes through the heat exchange member 112. Needless to say, it can be changed in various ways.

  In addition, the heat exchange chamber 110 may be provided with a drain hole 116 on the concrete surface. At this time, it is more preferable that the foundation concrete C is gently inclined toward the drain hole 116. As a result, even if water accumulates on the inner bottom surface of the heat exchange chamber 110 due to moisture condensation in the air, it flows into the drain holes 116, so that generation of mold is prevented and the heat exchange chamber 110 is kept clean. As a result, the air sent into the living space can be made clean.

  According to the air conditioning system S2 described above, air having a simpler structure than the air conditioning system S1 according to the first embodiment and having a temperature closer to the ground temperature Tg than the outside air temperature Ta is blown into the house. I can do it. That is, the structure corresponding to the duct 13 according to the first embodiment is unnecessary, and the length of the pile 111 can be shortened compared with the pile 11 of the first embodiment, so that it is inexpensive without using a special member. Can be realized. In addition, construction, inspection, and maintenance are easy.

(3) Third embodiment of the air conditioning system:
FIG. 9 is a diagram illustrating a third embodiment of the air conditioning system. The air conditioning system S3 shown in the figure is different from the air conditioning system S2 described above in that it does not include the pile 111 and the heat insulating material 117, and is otherwise the same as the air conditioning system S2, and thus the air conditioning system. The description will be made using the same reference numerals as in S2.

  When the pile 111 is not provided as in the air conditioning system S3, the temperature of the heat exchanging member 112 is adjusted near the temperature of the foundation concrete C. This is because the temperature Tc of the foundation concrete C is sufficiently close to the stable underground temperature Tg0 as compared with the outside air temperature Ta. Therefore, the air that has passed through the heat exchange member 112 is adjusted to be cool in summer and adjusted to be warm in winter. Note that the heat exchange through the foundation concrete C as shown in FIG. 9 is substantially performed also in the air conditioning system shown in FIG. 7 according to the second embodiment described above.

  According to the air conditioning system S3 according to the third embodiment described above, the work process for burying the pile in the concrete and the ground becomes unnecessary as compared with the air conditioning system S2 according to the second embodiment. Compared to the air conditioning system S2 according to the second embodiment, it is easier to construct, the construction cost can be reduced, and since no pile or heat insulating material is required, the material cost can be suppressed. .

(4) Summary:
As described above, the air conditioning system S <b> 1 according to the first embodiment includes the metal pile 11 in which the lower part is embedded in the ground, and the one opening 13 a between the outer surface of the exposed portion 11 b of the pile 11. A duct 13 attached to the exposed portion 11b of the pile 11 and a duct 30 communicating with the duct 13 with a gap of a predetermined interval d4 provided between them. And a fan 40 for blowing air from the 30 air inlets 31 toward the air outlet 32. As a result, heat can be exchanged between the ground and air at low cost and efficiently, and the air adjusted to a temperature close to the ground temperature can be sent out from the air outlet 32 of the duct 30.

  In addition, the air conditioning system S2 according to the second embodiment and the air conditioning system S3 according to the third embodiment have a flat space that is low in the top and bottom and is surrounded by a heat insulating material while the top surface of the foundation concrete C is the bottom surface. And a heat exchange chamber having air inlet holes 114 and air inlet holes 115 communicating with the outside of the flat space on the side surfaces formed of a heat insulating material, and from the air inlet hole 114 to the air inlet hole 115 in the flat space. A breathable heat exchange member 112 disposed in the middle of the route to reach, one opening is provided at any position inside the duct 130 attached to the air inflow hole 115, and the duct 130. And a fan 140 for blowing air from the opening 131 of the duct 130 toward the opening 132. As a result, heat can be exchanged between the ground and air at low cost and efficiently, and air adjusted to a temperature close to the ground temperature can be sent out from the opening 132 of the duct 130.

  Note that the present invention is not limited to the above-described embodiments and modifications, and the structures disclosed in the above-described embodiments and modifications are mutually replaced, the combinations are changed, the known technique, and the above-described implementations. Configurations in which the configurations disclosed in the embodiments and modifications are mutually replaced or the combinations are changed are also included. Further, the technical scope of the present invention is not limited to the above-described embodiments, but extends to the matters described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Heat exchange part, 11 ... Pile, 11a ... Buried part, 11b ... Exposed part, 12 ... Heat exchange member, 13 ... Duct, 13a ... Opening, 13b ... Opening, 14 ... Heat insulating material, 20 ... Residence part, 21 ... Opening, 22 ... Opening, 30 ... Duct, 31 ... Air inlet, 32 ... Air outlet, 33 ... Connecting member, 34 ... Connecting member, 34a ... Flange part, 34b ... Cylindrical part, 34b ... Cylindrical part, 34c ... Protrusion 34a1 ... side, 34a2 ... side, 40 ... fan, 50 ... rectifying part, 51 ... ventilation structure, 52 ... opening, 60 ... opening, 110 ... heat exchange chamber, 111 ... pile, 111a ... buried part, 111b ... exposed part , 112 ... heat exchange member, 113 ... heat exchange chamber, 114 ... air inflow hole, 115 ... air outflow hole, 116 ... drainage hole, 117 ... heat insulating material, 130 ... duct, 131 ... opening, 132 ... opening, 133 ... connection Member, 134 ... connection part , 140, fan, 150, rectifying unit, 501, side, 502, side, 521, side, 522, side, 523, side, 524, side, C, foundation concrete, F, floor surface, G, ground, H ... House, O ... Outdoor, S1 ... Air conditioning system, S2 ... Air conditioning system, S3 ... Air conditioning system, ST ... Stair, ST1a ... Tread, ST1b ... Kicking, Ta ... Outside temperature, Tc ... Temperature, Tg ... Underground Temperature, Tx ... Temperature, Tg0 ... Stable ground temperature, U ... Under floor, U1 ... Vent

Claims (7)

The bottom surface is a concrete surface placed at the bottom of the underfloor space, and the other surface is surrounded by a heat insulating material different from the formation material of the underfloor space, and has a flat space that is low in the upper and lower sides, and the side surface of the heat insulating material A heat exchange chamber provided in the underfloor space, having an air inflow hole and an air outflow hole communicating with the flat space and the outside;
In the heat exchange chamber, it is arranged in contact with the concrete surface so as to partition an intermediate position of the path from the air inflow hole to the air outflow hole, and the air flowing in from the air inflow hole and flowing out to the air outflow hole is inside. A porous heat exchange member arranged to circulate ,
A duct having one opening attached to the air outlet hole;
Blower means provided at any position inside the duct, for blowing air from one opening of the duct to the other opening;
An air conditioning system comprising: The bottom surface is a concrete surface placed at the bottom of the underfloor space, and the other surface is surrounded by a heat insulating material different from the formation material of the underfloor space, and has a flat space that is low in the upper and lower sides, and the side surface of the heat insulating material A heat exchange chamber provided in the underfloor space, having an air inflow hole and an air outflow hole communicating with the flat space and the outside;
The flat space is arranged in contact with the concrete surface so as to divide the midway position of the path from the air inflow hole to the air outflow hole, and the air flowing in from the air inflow hole and flowing out to the air outflow hole passes through the interior. A porous heat exchange member arranged to circulate ;
A pile in which the lower part is buried in the ground and the part exposed to the ground is in contact with the heat exchange member;
A duct having one opening attached to the air outlet hole;
Blower means provided at any position inside the duct, for blowing air from one opening of the duct to the other opening;
An air conditioning system comprising: A metal pile buried under the ground,
A duct that is loosely fitted to cover one opening side so as to cover a portion exposed to the ground of the pile,
Blower means provided at any position inside the duct, for blowing air from one opening of the duct to the other opening;
An air conditioning system comprising:   In the gap formed between the duct and the portion of the pile exposed on the ground, a breathable heat exchange member that exchanges the heat of the air passing through the gap and the heat of the pile is disposed. The air conditioning system according to claim 3, wherein the air conditioning system is provided.   5. The retention portion where the cross-sectional area is larger than that of the duct and the flow velocity of air is lower than that of the duct is provided at an intermediate position of the duct. Air conditioning system. It has a box-shaped part provided under the tread of any step of the stairs inside the house,
The other opening of the duct is connected to the lower surface of the box-shaped part,
6. The air according to claim 1, wherein the air that has flowed into the box-shaped portion through the duct flows out into the house through a ventilation structure provided in the kicked portion of the step. The air conditioning system according to claim 1. Further comprising an opening provided in the floor of the house,
The air according to any one of claims 1 to 6 , wherein edges of two opposite sides of the lid for closing the opening are positioned on adjacent large drawing columns. Harmony system.

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