JP6425082B2 - Large space air conditioning system - Google Patents

Description

  The present invention relates to a large space air conditioning system provided in a building having a large space room.

Conventionally, for example, in an air conditioning system in a large factory or other building having a large space room, the air conditioner is installed on the floor or on a pedestal of an upper facility, and an air conditioning duct and an air outlet are appropriately installed. It is common to use a stratified air conditioning system that air-conditions a living area up to a certain height.
In addition, as an air conditioning method in which an air supply passage is provided under the floor, for example, an outlet panel is disposed on a part of the floor surface where fixtures and the like are not installed as described in Patent Document 1, and An air conditioning method is known which blows out the air supplied through the air passage substantially parallel to the floor surface and forms a thermal stratification from the floor surface to the living area.

JP 10-115439 A

However, the conventional stratified air conditioning method in a large space room has the following problems.
That is, as an advantage of a building having a large space, natural ventilation can be used in seasons other than summer when air conditioners are not required, and natural ventilation is performed by taking in outside air from the opening of a large space room, etc. It is carried out. However, in the vicinity of the intake of the outside air, there is a possibility that discomfort may occur due to the inflow of the outside air, so improvement in comfort has been desired.

  The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a large space air conditioning system capable of improving the air conditioning efficiency by adopting an air conditioning system by natural ventilation using pits under the floor. I assume.

In order to achieve the above object, the large space air conditioning system according to the present invention is a large space air conditioning system provided in a building having a large space room provided with a pit under the floor, and the pits are made of a plurality of reinforced concrete structures. A pillar material is erected, a steel girder material is removably constructed on the upper end face of the pillar material, and a precast concrete floor slab is detachably arranged on the girder material, whereby a pit under the floor is formed. is constructed, the said pit is provided in the floor member which partitions a large space chamber, and a vent for communicating the space between both, and open the external air inlet provided in the pit, a ceiling portion of the large space chamber It is characterized in that the arrangement is open exhaust port Ru lead to outside the building, with a to.

In the present invention, by opening each of the outside air intake and the exhaust port, the outside air taken into the pit from the outside air intake is blown out into the large space room through the vent provided in the floor material. It is possible to form a flow path of air that is discharged from the exhaust port disposed at the ceiling portion to the outside of the building. At this time, since the air flowing from the pit to the large space chamber can increase the blowing force by the ventilation portion of the floor material, the air flow from the floor material to the exhaust port of the ceiling portion is formed in the large space chamber. Is possible. As described above, in a large space air conditioning system, natural ventilation can be efficiently performed using pits without using the entrance of a large space room or an opening such as a window. For example, a building having a large ceiling and a large space room Is also effective.
Therefore, in seasons other than summer, etc., a stable indoor environment can be configured only by natural ventilation without using air conditioners such as air conditioning and heating devices and blowers, and it becomes possible to improve the air conditioning efficiency. Power saving can be achieved.

In addition, since the outside air can be taken into the large space room through the pit, it is possible to prevent the area around the outside air intake from becoming uncomfortable as compared with the case where the outside air intake is arranged in the large space room which becomes a living area. Can create a stable indoor environment.
Furthermore, in this case, it is possible to appropriately change the air conditioning condition of the large space room by adjusting the number and position of the vents of the floor material. Therefore, it is possible to set an indoor environment by natural ventilation in accordance with the size, layout and purpose of use of the large space room.

  Moreover, as for the large space air conditioning system which concerns on this invention, it is preferable that the said pit is an underground pit.

In this case, since the underground pit serves as an air flow passage, the underground environment where the underground temperature cools from the outside air is used in summer, and the underground environment where the underground temperature is warmer than the outside air in winter can do.
Moreover, since the floor material itself has a heat storage effect, it becomes possible to set it as the floor heat storage air conditioning which held down the temperature change in a pit small.

  According to the large space air conditioning system of the present invention, the air conditioning efficiency can be improved by adopting the air conditioning system by natural ventilation using pits under the floor. In particular, in the intermediate period between summer and winter when it is possible to suppress heating and cooling, the above-mentioned effects are exhibited.

It is a perspective view showing a schematic structure of a factory which has a large space room by an embodiment of the invention. It is the perspective view which expanded a part of factory shown in FIG. It is a side view showing typically the outline of the large space air conditioning system used for a factory. It is a figure showing composition of a floor outlet provided in a PC floor slab, and (a) is a top view seen from the upper part, and (b) is a longitudinal section.

  Hereinafter, a large space air conditioning system according to an embodiment of the present invention will be described based on the drawings.

  As shown in FIG. 1, the large space air conditioning system according to the present embodiment is provided in a factory 1 (building) having a large space room R in which an underground pit 3 (pit) is disposed under the floor. The large space room R of the factory 1 has, for example, a production line of a large machine, a space of a predetermined size necessary to produce the product, and a precast concrete floor slab (hereinafter referred to as a PC floor) which forms a floor material. The underground pit 3 is provided below the plate 2).

The underground pit 3 is located in the ground and is constructed, for example, at a depth of about 3 m on almost the entire surface of the PC floor plate 2 in the factory 1 and is made of a frame of a bottom board 3A and a side wall 3B. Therefore, the air in the underground pit 3 is cooled or heated by the ground heat transmitted from the surrounding ground to the frame (bottom plate 3A and side wall 3B).
The underground pit 3 is erected on the bottom plate 3A as shown in FIGS. 1 and 2, and reinforced concrete (RC) arranged at predetermined intervals in each of the lateral direction X and longitudinal direction Y. And a girder member 32 made of a steel frame beam, which is joined to the upper end surface 31a of the pillar member 31 and constructed along the longitudinal direction Y and arranged in the longitudinal direction. . Then, on the girder members 32, 32 adjacent to each other in the arrangement direction, the PC floor slab 2 is constructed by placing each of the two opposing sides.

For example, the PC floor slab 2 is supported in a square shape in plan view, and one of the two opposing sides is placed on the upper surface of the girder 32, respectively, and a plurality of the PC floor slabs 2 in the lateral direction X and the longitudinal direction Y without gaps. It is arranged.
The PC floor slab 2 is formed with a U-shaped cut-out recess 21 at the center in the length direction of one opposing edge. Then, by making the notched concave portions 21 of the adjacent PC floor slabs 2 face each other and make them coincide with each other, the floor outlet 2A having a substantially square shape in plan view communicating the inside of the underground pit 3 and the large space chamber R ) Is formed.

  As shown in FIG. 3, in the large space air conditioning system, the floor outlet 2A provided on the PC floor slab 2 that divides the underground pit 3 and the large space room R, and the openable / closable outside air intake provided in the underground pit 3 It has a port 4 and an openable / closable exhaust port 5 disposed on the ceiling 11 of the large space room R.

The outside air intake 4 is an opening communicating the outside (outdoor) of the factory 1 with the inside of the underground pit 3.
In the present embodiment, an intake space 42 having a louver 41 is provided outside the underground pit 3, and the outside air intake 4 is provided between the intake space 42 and the underground pit 3.
There are no particular limitations on the configuration of the size, shape, opening / closing method, number, and the like of the opening 5, but in the present embodiment, one point is provided at the central portion of the ceiling 11.

  In the underground pit 3, a plurality of pit air conditioners 6 are provided to adjust the air E in the underground pit 3 to a predetermined temperature. The air conditioner 6 in the pit is driven mainly when natural ventilation is not performed, such as summer and winter.

A plurality of floor outlets 2A are disposed over substantially the entire surface of the PC floor slab 2 and formed in a rectangular shape by facing the notched recesses 21 and 21 (see FIG. 2) provided in the adjacent PC floor slab 2 As shown in FIGS. 4 (a) and 4 (b), at least a part of the plurality of floor outlets 2A blows air E in the underground pit 3 into the large space R on the PC floor plate 2. A raising fan 22 is provided. In FIG. 3, the blow-up fans 22 are arranged at every other one of the floor outlets 2A.
By rotating the blow-up fan 22, the air E in the underground pit 3 can be blown up to a higher position.

Moreover, the grating 23 is provided in the floor outlet 2A along the opening. The grating 23 is formed in a lattice shape and is disposed to close the entire opening.
The blow-up fan 22 is fixed to the lower surface of the grating 23 and has a simple shape that fits in the floor outlet 2A.

Next, the operation of the large space air conditioning system described above will be described based on the drawings.
As shown in FIG. 3, in the present embodiment, the outside air E taken into the underground pit 3 from the outside air inlet 4 is opened to the PC floor plate 2 by opening the outside air inlet 4 and the air outlet 5 respectively. It is possible to form a flow path of air E such that it is blown out into the large space room R through the floor blow-up port 2A provided, and is further delivered to the outside of the factory 1 from the exhaust port 5 disposed in the ceiling portion. .

  At this time, since the air E flowing from the underground pit 3 to the large space room R can increase the blowing power by the floor blowing port 2A, in the large space room R, from the PC floor 2 to the exhaust port 5 of the ceiling portion It becomes possible to form a flow of air E towards. Moreover, in the present embodiment, since the blow-up fan 22 is provided in the floor blow-up opening 2A, the air E in the underground pit 3 can be forcibly blown up to a predetermined height above the floor.

As described above, in the large space air conditioning system, natural ventilation can be efficiently performed using the underground pit 3 without using the entrance of the large space room R or the opening of a window or the like, and a ceiling as in this embodiment Is also effective in a factory 1 having a large space room R.
Therefore, in seasons other than summer, etc., a stable indoor environment can be configured only by natural ventilation without using air conditioners such as air conditioning and heating devices and blowers, and it becomes possible to improve the air conditioning efficiency. Power saving can be achieved.

Further, since the outside air can be taken into the large space room R through the underground pit 3, the area near the outside air intake is uncomfortable compared to the case where the outside air intake 4 is disposed in the large space room R serving as a living area. Can be prevented and a stable indoor environment can be configured.
Furthermore, in this case, by adjusting the number and position of the floor blowing ports 2A of the PC floor slab 2, it becomes possible to appropriately change the air conditioning condition in the large space room R. Therefore, it is possible to set an indoor environment by natural ventilation in accordance with the size, layout and purpose of use of the large space room R.

Further, in the case of the large space air conditioning system according to the present embodiment, the underground pit 3 serves as a flow passage of air, so the underground environment in which the underground temperature cools from the outside air in summer is utilized, You can use the underground environment where the underground temperature is warmer.
In addition, since the PC floor slab 2 itself has a heat storage effect, it becomes possible to achieve floor thermal storage air conditioning in which the temperature change in the underground pit 3 is suppressed to a small value.

  As described above, in the large space air conditioning system according to the present embodiment, the air conditioning efficiency can be improved by adopting the air conditioning system by natural ventilation using the underground pit 3 under the floor. In particular, in the intermediate period between summer and winter when it is possible to suppress heating and cooling, the above-mentioned effects are exhibited.

  As mentioned above, although embodiment of the large space air conditioning system by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.

  For example, in the present embodiment, the factory 1 having the underground pit 3 and the large space room R is applied as the floor blowing air conditioning system, but the invention is not limited thereto. For example, music hall, theater, gymnasium, sports You may target buildings other than a production factory, such as a facility. Further, the pit is not limited to the underground pit 3 as in the present embodiment, and may be a pit provided on the ground floor, or provided in a part of the multilayer structure. It may be a pit like under floor space.

  Moreover, although the PC floor slab 2 is applied as a floor material which divides each space of a large space room and a pit, it is possible to apply not only this but other floor materials. .

  Furthermore, in the present embodiment, the blow-up fan 22 is provided on the floor outlet 2A, but the blow-up fan 22 can be omitted.

  Further, in the present embodiment, a plurality of PC floor slabs 2 are removably arranged on the girder members 32 as floor materials for partitioning the space between the large space room and the pit, but such PC floor slabs It is not limited to being 2. In addition, although the floor outlet 2A (vented portion) including the notched recess 21 is provided in the PC floor slab 2, the configuration of the shape, size, position, number, etc. of the vented portion can be set appropriately. . The point is that it is sufficient if the floor material is provided with a vent for communicating the large space chamber with the pit. Therefore, as in the present embodiment, it is possible to use only the notch recess 21 of one PC floor plate 2 as the floor outlet instead of the configuration in which the notch recesses 21 of the adjacent PC floor plate 2 are made to coincide with each other. .

  In addition, without departing from the spirit of the present invention, it is possible to replace components in the above-described embodiment with known components as appropriate.

1 Factory (building)
2 PC floor version (flooring)
2A floor outlet (vent)
3 underground pit (pit)
DESCRIPTION OF SYMBOLS 4 outside air intake 5 exhaust port 6 air conditioner in a pit 21 notch recessed part 22 blow-up fan 31 column material 32 digit material R large space room

Claims (2)

A large space air conditioning system provided in a building having a large space room provided with a pit under the floor, comprising:
A plurality of reinforced concrete columns are erected in the pits, a steel girder is removably mounted on the upper end surface of the pillars, and a precast concrete floor slab is removably arranged on the girder The underfloor pit is built by
A ventilation part provided on a floor material that divides the pit and the large space chamber, and communicating the two spaces with each other;
An openable / closable open air inlet provided in the pit;
Wherein the large space chamber of the ceiling portion and arranged openable exhaust port Ru lead to outside the building,
Large space air conditioning system characterized by having.   The large space air conditioning system according to claim 1, wherein the pit is an underground pit.

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