JP6412378B2 - Ventilation air conditioning system - Google Patents

Description

  The present invention relates to a ventilation air-conditioning system that can simultaneously realize ventilation and air conditioning of a floor space of a building using geothermal heat.

  In a typical house, the floor space is divided into a plurality of room spaces, and each room space is provided with an air conditioner (air conditioner). Therefore, each room space is individually air-conditioned by the respective air conditioner. However, such an air conditioning system requires ventilation separately.

  On the other hand, the air under heat exchange with the ground side of the underfloor space is stored in the underfloor space of the building. In general, the temperature of air exchanged with the ground in the underfloor space is lower than the outside air in the summer and higher than the outside in the winter. Therefore, for example, in the period when it is not necessary to actively use the air conditioner but it is necessary to adjust the temperature slightly (summer or winter), if the air in the underfloor space is used, ventilation and air conditioning can be performed. It can be realized more efficiently. Related technologies include the following.

Japanese Patent No. 5094894 Japanese Patent No. 5530282

  The present invention has been devised in view of the above problems, and provides a ventilation air-conditioning system that can realize ventilation and air-conditioning of the space above the floor of a building using the air in the space under the floor. The main issue.

  The present invention is a ventilation and air conditioning system for a building comprising an underfloor space surrounded by a foundation, the ground, and a floor, and an above-floor space above the floor, and is provided on the foundation and introduces outside air into the underfloor space Including a basic air supply port, a chamber box disposed in the underfloor space and having an exhaust port, and an air supply device capable of supplying air in the chamber box from the exhaust port to the floor space, The chamber box includes a first space having a first inlet for taking in air in the underfloor space, a second space into which air conditioned by an air conditioner is introduced, the first space, and the second space. And an opening / closing part that communicates or blocks, and the exhaust port is provided in the first space.

  In another aspect of the present invention, the air supply device includes a duct having one end connected to the exhaust port of the chamber box and the other end positioned in the space above the floor, and the one end and the other end of the duct. An air supply fan provided in between, and an air purification device provided between the one end and the other end of the duct, the fan and the air purification device being arranged in the underfloor space May be.

  In still another aspect of the present invention, the air conditioner is accommodated in the second space of the chamber box, and the air in the floor space is supplied to the intake portion of the air conditioner in the chamber box. An on-floor air inlet may be provided.

  In still another aspect of the present invention, a heat collection device including a heat collection unit that warms the outside air, and a duct that supplies the outside air heated by the heat collection unit to the first space of the chamber box, and An opening / closing part that closes the 1 inlet and shuts off the communication between the first space and the underfloor space may be further provided.

  In still another aspect of the invention, the space above the floor includes a plurality of room spaces, and each of the room spaces is provided with the chamber box from the air supply device via a damper capable of adjusting the amount of air passing therethrough. The air may be supplied.

  The present invention is a ventilation and air conditioning system for a building comprising an underfloor space surrounded by a foundation, the ground, and the floor, and an upper floor space above the foundation, and is provided on the foundation and introduces outside air into the underfloor space. And a chamber box disposed in the underfloor space and having an exhaust port, and an air supply device capable of taking out the air in the chamber box from the exhaust port and supplying the air to the space above the floor Yes.

  The chamber box includes a first space having a first inlet for taking in air in an underfloor space, a second space into which air conditioned by an air conditioner is introduced, the first space, and the second space. And an open / close portion that communicates or blocks, and the exhaust port opens into the first space.

  According to such a system, in the space above the floor, “air exchanged with the ground” or “mixed air of air exchanged with the ground and air conditioned by the air conditioner” is selectively used. Can be supplied.

  As described above, the temperature of the air in the underfloor space is lower than the outside air in the summer and higher than the outside in the winter. Therefore, for example, at a time when it is not necessary to actively use the air conditioner, it is desirable to switch the opening / closing part to block the first space and the second space in the chamber box. Thereby, the air in the underfloor space introduced into the first space is supplied to the above-floor space. Thereby, ventilation and air conditioning of the space above the floor of the building are realized at the same time by using the air in the space under the floor which exchanges heat with the ground.

  On the other hand, in summer and winter, it is desirable to switch the opening / closing part of the chamber box so that the first space communicates with the second space. Thereby, in the first space, the air in the underfloor space and the air that has been air-conditioned more positively by the air conditioner are mixed and supplied to the above-floor space. Thereby, more comfortable air conditioning can be realized while performing ventilation. In this case, since the air in the underfloor space is used for ventilation, the temperature change due to ventilation can be suppressed to be smaller than when other outside air is directly introduced. Further, as a secondary effect, it is possible to omit the installation of a heat exchanger unit or the like that prevents heat loss separately in the path for introducing outside air for ventilation.

It is sectional drawing of the building for demonstrating the ventilation air conditioning system of one Embodiment of this invention. It is an expanded sectional view of the chamber unit of this embodiment. It is an expanded sectional view of the chamber unit of other embodiments.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 conceptually shows a cross-sectional view of a building 2 to which a ventilation air conditioning system 1 according to an embodiment of the present invention is applied. As shown in FIG. 1, in this embodiment, a house H is shown as a building 2. In order to enhance the air conditioning effect, the house H is desirably an industrialized house having excellent heat insulation performance, light shielding performance and airtight performance.

  The house H includes an underfloor space 3 and an above-floor space 4. The underfloor space 3 is a non-residential space surrounded by the foundation 5, the ground 6 and the floor 7. The floor space 4 is a space provided above the underfloor space 3, and is partitioned into a plurality of living room spaces 4A to 4C and a non-room space 4D such as a washroom and a toilet in this embodiment.

  The ventilation air-conditioning system 1 includes a basic air inlet 8 for introducing outside air into the underfloor space 3, a chamber box 9 disposed in the underfloor space 3, and a supply capable of supplying the air in the chamber box 9 to the above floor space 4. Qi device 10 is included. In the ventilation air conditioning system 1 of this embodiment, what further includes the heat collecting device 22 is shown, but this device is an arbitrary element.

  The base air supply port 8 is one opening provided at the rising portion of the base 5. Outside air is taken into the underfloor space 3 through the basic air supply port 8. In the present embodiment, in order to positively introduce outside air into the underfloor space 3, a basic air supply fan 11 is provided in the vicinity of the basic air supply port 8, for example. The foundation 5 is preferably insulated from the outside air by a heat insulating material such as foamed resin (not shown).

  The outside air supplied to the underfloor space 3 exchanges heat with the ground cooling heat via the ground 6 in the underfloor space 3. Thereby, the air in the underfloor space 3 can have a temperature lower than the outside air in the summer and higher than the outside air in the winter. The ground 6 of the underfloor space 3 is finished with, for example, dirt concrete.

  FIG. 2 shows an example of the chamber box 9 in an enlarged manner. Note that the chamber box 9 in FIG. 1 is conceptually shown, and therefore does not necessarily match the chamber box 9 shown in FIG. As shown in FIG. 2, the chamber box 9 is substantially box-shaped and includes a first space 9A, a second space 9B, and an opening / closing part 9C provided therebetween. The chamber box 9 is used as a space for storing air to be supplied to the floor space 4.

  The first space 9 </ b> A is provided on one end side in the horizontal direction of the chamber box 9. The first space 9 </ b> A is completely accommodated in the underfloor space 3. A heat insulating material 12 is disposed on the wall surface of the chamber box 9 that partitions the first space 9A. Thereby, the first space 9A is thermally insulated, and heat dissipation to the outside can be prevented.

  The first space 9A is provided with a first introduction port 13 for taking in air in the underfloor space 3. Therefore, the air in the underfloor space 3 (that is, the outside air heat-exchanged with the ground cooling heat) is introduced into the first space 9A from the first inlet 13. In this example, the first introduction port 13 is provided on the upper surface side of the first space 9A, but the position thereof can be arbitrarily determined. In the present embodiment, the first inlet 13 is provided with an opening / closing part 30. The opening / closing part 30 is, for example, an electrically controllable damper, and is normally open so that the first space 9 </ b> A and the underfloor space 3 communicate with each other.

  The first space 9A is further provided with a second introduction port 19 for taking in the outside air warmed by the heat collector 22. Therefore, the outside air warmed by the heat collector 22 can be taken into the first space 9A. In the present embodiment, the second introduction port 19 is provided with an opening / closing part 21. The opening / closing part 21 is, for example, an electrically controllable damper, and is normally closed so that the first space 9 </ b> A and the heat collecting device 22 are blocked. On the other hand, when the air from the heat collecting device 22 is taken into the first space 9A of the chamber box 9, for example, the second inlet 19 is opened by operating the opening / closing part 21. In this case, the first introduction port 13 may be closed by operating the opening / closing part 30.

  The first space 9A is provided with an exhaust port 14 for discharging the air therein. The exhaust port 14 is provided, for example, on the side surface of the first space 9A. One end 10 </ b> Ai of the duct 10 </ b> A of the air supply device 10 is connected to the exhaust port 14. These will be described in detail later.

  The second space 9 </ b> B is provided on the other end side in the horizontal direction of the chamber box 9. In the present embodiment, the upper wall portion 17 that partitions the second space 9 </ b> B is exposed to the floor space 4 from the opening 7 a provided in the floor 7. The upper wall portion 17 is preferably provided with, for example, a detachable lid portion 15. By removing the lid 15, there is an advantage that the inspection and maintenance in the chamber box 9 can be easily performed from the floor space 4 side.

  An air conditioner (air conditioner) 16 is accommodated in the second space 9B. In order to accommodate the air conditioner 16, the second space 9B is configured to have a larger volume than the first space 9A, for example.

  The air conditioner 16 of the present embodiment is a general home-use separate air conditioner, and the indoor unit is disposed in the second space 9B. The outdoor unit (not shown) is installed outside the building 2. The air conditioner 16 has an intake portion 16a that sucks air and an exhaust portion 16b that exhausts air that has been heat-exchanged with the refrigerant therein. Therefore, air-conditioned air is introduced into the second space 9B by operating the air conditioner 16. It is desirable that the heat insulating material 12 is also disposed on the wall surface of the chamber box 9 that partitions the second space 9B. Thereby, the 2nd space 9B is insulated and can prevent inflow and inflow of heat.

  In the present embodiment, a floor air introduction port 18 for supplying the air in the floor space 4 to the intake portion 16a of the air conditioner 16 is provided in the second space 9B of the chamber box 9. The floor air inlet 18 is provided, for example, as a suction grill in the upper wall portion 17 of the chamber box 9. Thereby, the air in the floor space 4 is supplied to the air intake unit 16a of the air conditioner 16 in the second space 9B through the floor air introduction port 18. This is useful for preventing a short circuit of the air conditioner 16 in the second space 9B, which is a smaller space than a living room or the like. In order to exhibit such an action more reliably, a shielding unit 40 is further provided to prevent mixing of the air in the floor space 4 and the air-conditioned air blown out from the exhaust unit 16b of the air conditioner 16. May be.

  The shielding unit 40 is made of, for example, a damper capable of controlling the operation, and includes a blocking position where the intake unit 16a and the exhaust unit 16b of the air conditioner 16 are blocked, and a communication position where the intake unit 16a and the exhaust unit 16b are communicated. It is configured to be switchable.

  An opening / closing part 9C is provided between the first space 9A and the second space 9B. The first space 9A and the second space 9B communicate with each other or are blocked by the opening / closing part 9C. For the opening / closing part 9C, for example, a damper or the like that is operated by electric control is preferably used, and its operating position is switched by a control device (not shown) or the like.

  When the opening / closing part 9C is switched to the blocking position, the first space 9A and the second space 9B constitute two independent spaces. In this case, only “the air in the underfloor space 3 that has exchanged heat with the ground 6” is supplied to the first space 9 </ b> A of the chamber box 9. On the other hand, when the opening / closing part 9C is switched to the communication position, the first space 9A and the second space 9B constitute a substantially single space communicating with each other. In this case, in the first space 9 </ b> A of the chamber box 9, when the air conditioner 16 is operated, “the air in the underfloor space 3 that has exchanged heat with the ground 6” and “the air that is air-conditioned by the air conditioner 16. "Mixed air" is supplied.

  As shown in FIG. 1, the air supply device 10 includes a duct 10A, an air supply fan 10B, and an air purification device 10C.

  The duct 10A has one end 10Ai connected to the exhaust port 14 of the chamber box 9 and the other end 10Ao positioned at the ceiling portion of each room space 4A, 4B and 4C of the floor space 4 and a non-room space 4D such as a toilet or washroom. doing. Each other end 10Ao of the duct 10A communicates with each living room space 4A, 4B and 4C and a non-living room space 4D such as a toilet or a washroom via a damper 20 capable of adjusting the amount of air passing therethrough. In this embodiment, two systems for the first floor and the second floor are provided as the duct 10A, but these may be integrated into one system.

  The supply fan 10B is provided between one end 10Ai and the other end 10Ao of the duct 10A. The fan 10B generates a forced air flow from one end 10Ai of the duct 10A toward the other end 10Ao. Therefore, by operating the fan 10B, the air in the first space 9A of the chamber box 9 is supplied from the exhaust port 14 to the other end 10Ao of the duct 10A.

  The air purification device 10C is provided, for example, between one end 10Ai and the other end 10Ao of the duct 10A, and in this embodiment, provided on the upstream side of the fan 10B. As the air purification device 10C, various types of devices can be adopted as long as they can remove pollen, particulate matter, dust and the like from the air in the duct 10A.

  In this embodiment, both the fan 10 </ b> B and the air purification device 10 </ b> C are disposed in the underfloor space 3. Thereby, the space space 4 can be effectively used.

  Furthermore, the heat collection apparatus 22 is provided in the ventilation air conditioning system 1 of this embodiment. The heat collection device 22 is an air heat collection type that uses natural energy. For example, the heat collection unit 22a provided on the roof and the outside air warmed by the heat collection unit 22a are converted into the first space 9A of the chamber box 9. And a duct 22b to be supplied.

  The heat collection part 22a is provided with the glass heat collection part installed so that external air could be introduced between roofs. The outside air is warmed by sunlight transmitted from the glass heat collecting section. This outside air is sent to the chamber box 9 through the duct 22b.

  One end of the duct 22b communicates with the heat collecting part 22a, and the other end is connected to a second introduction port 19 (shown in FIG. 2) provided in the first space 9A of the chamber box 9. Although not shown, a fan may be provided in the middle of the duct 22b in order to actively generate an air flow from one end to the other end.

  According to the ventilation air-conditioning system 1 of the present embodiment configured as described above, the floor space 4 can be ventilated. In this case, for example, the opening / closing part 9C of the chamber box 9 is switched to the blocking position, the first space 9A and the second space 9B are blocked, and the fan 10B of the air supply device 10 is operated.

  That is, the air in the first space 9A of the chamber box 9 is cleaned from the exhaust port 14 via the duct 10A and the air purification device 10C, and then on the floor of each room space 4A to 4C etc. via the damper 20. It is supplied to the space 4. Further, for example, the air in the floor space 4 is discharged to the outdoors by an exhaust fan 50 provided in the floor space 4 according to the amount of supplied outside air. Air (outside air) in the underfloor space 3 is introduced into the first space 9 </ b> A of the chamber box 9 from the first introduction port 13. Accordingly, the above-described floor spaces 4 such as the living room spaces 4A to 4C and the non-living room space 4D are ventilated with the cleaned outside air.

  Further, as described above, the temperature of the air exchanged with the ground 6 in the underfloor space 3 is lower than the outside air in the summer and higher than the outside in the winter. Therefore, in the initial stage of summer or winter when it is not necessary to actively use the air conditioner, the air in the underfloor space 3 is utilized to adjust the temperature of the space 4 above the floor without using the air conditioner 16 (slightly Cooling or warming up a little). Therefore, the air conditioning cost can be reduced.

  In the summer and winter seasons, it is desirable to connect the first space 9A and the second space 9B by switching the opening / closing part 9C of the chamber box 9 to the communication position. Thereby, in the first space 9 </ b> A, the air in the underfloor space 3 and the air that has been more actively air-conditioned by the cooling or heating operation of the air conditioner 16 are mixed. The mixed air is supplied to the floor space 4 by the air supply device 10. Thereby, the air conditioning of the floor space 4 can be realized more positively while performing ventilation.

  Moreover, since the air in the underfloor space 3 is used as the outside air for ventilation, the temperature change due to ventilation is suppressed to a smaller extent than when the outside air other than the underfloor space 3 is directly introduced. be able to. Further, as a secondary effect, for example, it is possible to omit the installation of a heat exchanger unit or the like that prevents heat loss in a path for introducing outside air for ventilation.

  Further, when the air conditioner 16 is in a stopped state, for example, a part of the air in the floor space 4 can be sent to the air supply device 10 via the chamber box 9 by opening the shielding unit 40. In this case, purification can be performed while circulating the space 4 on the floor.

  Furthermore, in winter, the outside air warmed by the heat collector 22 may be hotter than the air in the underfloor space 3. In such a case, the first introduction port 13 is closed by the opening / closing unit 30, while the second introduction port 19 is opened by the opening / closing unit 21. Thereby, in the first space 9 </ b> A of the chamber box 9, hotter outside air warmed by the heat collecting device 22 is introduced instead of the air in the underfloor space 3. Therefore, the floor space 4 can be adjusted to a higher temperature using only natural energy while ventilating.

  Although not shown, in the ventilation air conditioning system 1 of the present embodiment, for example, a human sensor or a temperature sensor may be provided in each of the room spaces 4A to 4C. And the air volume of each damper 20 can also be adjusted individually based on the detection signal of these sensors.

  FIG. 3 shows a cross-sectional view of a chamber box 9 of another embodiment. In FIG. 3, elements common to the embodiment of FIG. 2 are denoted with the same reference numerals. The shielding part 40 of the chamber box 9 of this embodiment includes a first shielding part 40a provided on the upper side of the exhaust part 16b of the air conditioner 16, and a second shielding part 40b provided on the lower side of the exhaust part 16b. Is included. The first shielding part 40a and the second shielding part 40b are preferably covered with a heat insulating material.

Due to the shielding part 40 described above, the space on the right side of the opening / closing part 9C in the figure of the chamber box 9 is the conditioned air region 9B1 as the second space 9B into which only air conditioned by the exhaust part of the air conditioner 16 is introduced. And an above-floor air region 9B2 where the air in the above-floor space 4 exists. And as for the air conditioner 16, substantially only the exhaust part 16b is exposed to the 2nd space 9B, and the other part is exposed to the floor air area | region 9B2. In such a chamber box 9, the air conditioner 16 can be exposed to air at the temperature of the intake section 16a (in other words, only the exhaust section 16b is exposed to the second space). The temperature sensor incorporated in the can be effectively utilized. If the temperature sensor of the air conditioner 16 is affected by the temperature of the second space 9B, there is a risk of unintended operation.

  Further, in this embodiment, the floor air inlet 18 is provided not at the position directly above the air conditioner 16 but at a position shifted in the horizontal direction. Thereby, the air conditioner 16 can be protected from dropping of water droplets or the like from the indoor side.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and can be implemented by being modified to various aspects.

DESCRIPTION OF SYMBOLS 1 Ventilation air-conditioning system 2 Building 3 Under floor space 4 Above floor space 5 Foundation 6 Ground 7 Floor 8 Basic air inlet 9 Chamber box 9A 1st space 9B 2nd space 9C Opening / closing part 10 Air supply apparatus 10A Duct 10B Fan 10C Air purification apparatus 13 First introduction port 14 Exhaust port 16 Air conditioner 16a Intake unit 16b Exhaust unit 18 Floor air introduction port 19 Second introduction port 20 Damper 21 Opening / closing unit 22 Heat collecting device 22a Heat collecting unit 22b Duct

Claims (5)

A ventilation air conditioning system for a building comprising an underfloor space surrounded by a foundation, a ground, and a floor, and an upper floor space above the floor,
A basic air supply port provided on the foundation and for introducing outside air into the underfloor space;
A chamber box disposed in the underfloor space and having an exhaust port;
An air supply device capable of supplying air in the chamber box to the space above the floor from the exhaust port,
The chamber box is
A first space having a first inlet for taking in air in the underfloor space;
A second space into which air conditioned by an air conditioner is introduced;
Including an opening / closing portion that communicates or blocks the first space and the second space;
The ventilation air conditioning system, wherein the exhaust port is provided in the first space. The air supply device includes a duct having one end connected to the exhaust port of the chamber box and the other end positioned in the space above the floor,
A fan for supplying air provided between the one end and the other end of the duct;
An air purification device provided between the one end and the other end of the duct;
The ventilation air conditioning system according to claim 1, wherein the fan and the air purification device are arranged in the underfloor space. The air conditioner is housed in the second space of the chamber box;
The ventilation air conditioning system according to claim 1 or 2, wherein the chamber box is provided with a floor air inlet for supplying air in the space above the floor to an air intake of the air conditioner. A heat collecting device including a heat collecting unit that heats the outside air, and a duct that supplies the outside air heated by the heat collecting unit to the first space of the chamber box; and
The ventilation air conditioning system according to any one of claims 1 to 3, further comprising an opening / closing unit that closes the first introduction port and blocks communication between the first space and the underfloor space. The floor space includes a plurality of room spaces,
The ventilation air-conditioning system according to any one of claims 1 to 4, wherein air in the chamber box is supplied from the air supply device to the chamber spaces via dampers capable of adjusting the amount of air passing therethrough. .

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