JP2016125742A - Air conditioning control system for large space building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an air conditioning control system to be efficiently adjusted to and kept at a height of thermal stratification set in a large space and additionally to improve comfort of occupants.SOLUTION: This invention provides an air conditioning control system for a large space building having a configuration comprising an outside air supply part 4 for taking outside air into an underground pit 3; an in-pit air conditioner 5 for adjusting a temperature within the underground pit 3 to a prescribed temperature; a plurality of floor blowout ports 2A arranged at a PC floor plate 2 of a large space chamber R, communicated with spaces of the underground pit 3 and a large space chamber R on the floor; blowout fans 22 installed in at least one of the plurality of floor blowout ports 2A and blowing out in-pit conditioned airs E adjusted in the underground pit 3 to a prescribed temperature toward into the large space chamber R; a temperature sensor 6 for detecting thermal stratification at a dwelling area in the large space chamber R; and an air conditioning control part 7 for controlling the number of rotation of the blowout fans 22 on the basis of the detected value of the temperature sensor 6.SELECTED DRAWING: Figure 4

Description

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

Conventionally, for example, in an air conditioning facility in a building such as a large factory having a large space room, an air conditioner is installed on the floor or a frame of an upper facility, and an air conditioning duct and an outlet are appropriately installed, and 2 m from the floor surface. It is common to use a stratified air conditioning system that air-conditions residential areas 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, as disclosed in Patent Document 1, a blowout outlet panel is arranged on a part of a floor surface where no furniture is installed, and the air supply from the blowout outlet panel is provided. An air conditioning method is known in which air supplied through an air passage is blown out substantially parallel to the floor surface, and temperature stratification is formed from the floor surface to a residential area.

Japanese Patent Laid-Open No. 10-115439

However, the conventional stratified air conditioning system in a large space has the following problems.
That is, the air conditioning method shown in Patent Document 1 uses the property that cool air lower than the ambient temperature accumulates on the floor surface. In particular, in a large space, it functions relatively effectively during cooling, but warm air during heating. However, it rose toward the ceiling of the factory building, making effective heating in the residential area difficult and inefficient air conditioning.
Moreover, when the building which has a large space room is equipped with the equipment which has heat sources, such as a factory, since temperature dispersion | variation arises in the temperature stratification of a residential area, there existed a problem that temperature management was difficult. Moreover, there is no effective method for confirming whether temperature stratification is reliably formed, and there is room for improvement in that respect.

  The present invention has been made in view of the above-described problems, and can efficiently adjust and maintain the temperature stratification height set in a large space, and can improve the comfort of a resident. An object is to provide a control system for temperature stratified air conditioning in a large space building.

  In order to achieve the above object, an air conditioning control system for a large space building according to the present invention is an air conditioning control system for a large space building that controls air conditioning of a building having a large space room provided with a pit under the floor, An outside air supply unit that takes outside air into the pit, an air conditioner that adjusts the temperature in the pit to a predetermined temperature, and a floor of the large space room, and the large space room in the pit and on the floor A plurality of floor outlets communicating with each other, provided in at least one of the plurality of floor outlets, and the conditioned air in the pit adjusted to a predetermined temperature in the pit A blower fan that blows up indoors, a temperature detector that detects the stratification temperature of the living area in the large space room, and an air conditioning control that controls the rotational speed of the blower fan based on the detected value of the temperature detector It is characterized in that it comprises, when.

  In the present invention, the outside air taken into the pit from the outside air supply unit is adjusted to a predetermined temperature by the in-pit air conditioner, and the adjusted in-pit conditioned air is blown into the large space room through the floor outlet. . And since it blows up upwards to predetermined height by the blowing fan provided in a floor blowing outlet, the temperature stratification of the predetermined temperature set as a living area can be formed effectively. For example, when the air-conditioned air in the pit is cold air, it is possible to suppress the cold air from accumulating on the floor surface and to form temperature stratification in the living area.

In the present invention, for example, a temperature detector can be provided in the vicinity of a preset temperature stratification to detect the temperature, and the air conditioning controller can control the rotation speed of the blower fan based on the detected value. That is, by adjusting the blowing height or blowing force of the conditioned air in the pit by the blowing fan, it is possible to efficiently adjust and maintain the set temperature stratification height.
Therefore, efficient stratified air conditioning limited to a residential area (for example, a height of 2 m from the floor) can be performed. For example, a building such as a factory having a high ceiling and a large space room has high energy efficiency. Effective air conditioning can be performed.

In addition, even if the room temperature varies in a plane due to the heat generated by the equipment installed in the large space room, the rotation speed of the blower fan is controlled by the air conditioning control unit. Can be suppressed. This has the advantage of reducing energy consumption and providing comfort.
In addition, since there is a high degree of freedom in installing multiple floor outlets provided on the floor of a large space room, a blow-up fan is arranged according to the heat generation state of equipment and the like provided in the large space room among the multiple floor outlets can do. For example, it is possible to form a temperature stratification in a residential area by arranging a large number of blower fans around an equipment device that generates heat.

  Furthermore, the present invention is a floor blowing air conditioning system in which a plurality of floor blowing ports are provided on the floor above the pit, and the entire space in the pit functions as an air chamber adjusted by the air conditioner in the pit. Such an air conditioning duct is not necessary. Therefore, there is an advantage that air conveyance power can be suppressed, power saving can be achieved, and air conditioning equipment can be effectively arranged.

  In the air conditioning control system for a large space building according to the present invention, the air conditioning control unit controls the air conditioner in the pit in conjunction with the rotation speed of the blowing fan, and the temperature of the air conditioned air in the pit is adjusted. It is preferred that

  In this case, in addition to controlling the rotation speed of the blow-up fan by the air conditioning control unit, the pit air conditioner is also controlled, so that the pit conditioned air adjusted to an appropriate temperature can be blown up from the floor outlet. It becomes possible, and temperature stratification can be formed more reliably and stably.

  In the air conditioning control system for a large space building according to the present invention, it is preferable that the surface temperature of the floor is detected by the temperature detector.

  In this case, since the floor surface temperature can be adjusted to a predetermined temperature by the air conditioning control unit, it is possible to form a temperature environment using the radiant heat of the floor by raising the floor surface temperature particularly during heating in winter. it can. Therefore, the comfort of the resident can be improved.

  According to the air conditioning control system for a large space building of the present invention, it is possible to efficiently adjust and maintain the temperature stratification height set in the large space room and to improve the comfort of the resident.

It is a perspective view which shows schematic structure of the factory which has a large space room by embodiment of this invention. It is the perspective view which expanded a part of factory shown in FIG. It is a figure which shows the structure of the floor outlet provided in PC floor slab, Comprising: (a) is the top view seen from upper direction, (b) is a longitudinal cross-sectional view. It is the side view which showed typically the outline | summary of the air-conditioning control system used for a factory. It is the side view which showed the outline | summary of the air-conditioning control system used for a factory typically, Comprising: It is a figure of the state by which the equipment was provided on the floor.

  Hereinafter, an air conditioning control system for a large space building according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the air conditioning control system for a large space building 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 R of the factory 1 has, for example, a large machine production line, has a space of a predetermined size necessary for manufacturing the product, and precast concrete that partitions the underground pit 3 and the large space R. The underground pit 3 is provided below a floor slab (hereinafter simply referred to as a PC floor slab 2). The PC floor slab 2 is installed over almost the entire surface of the large space room R.

  Moreover, in the large space room R shown in FIG. 1, the temperature stratification set as a suitable living area is shown with the code | symbol P, and the height (upper limit position) of the temperature stratification P of the living area is shown with the code | symbol P1.

  The underground pit 3 is located in the ground, and is constructed on almost the entire surface of the PC floor slab 2 disposed in the factory 1 with a depth of about 3 m, for example, and is composed of a frame of a bottom panel 3A and a side wall 3B. Therefore, the air in the underground pit 3 has a temperature that is cooled or heated as compared to the outside air temperature by the underground heat that is transmitted from the surrounding ground to the frame (the bottom plate 3A and the side wall 3B).

  Moreover, as shown in FIG.1 and FIG.2, the underground pit 3 is erected on the bottom board 3A, and is reinforced concrete (with a fixed space | interval) arranged for every other direction of the horizontal direction X and the vertical direction Y ( RC) built column member 31 and a girder member 32 made of steel beams that are joined to and erected on the upper end surface 31a of the column member 31 and arranged in the longitudinal direction along the longitudinal direction Y. ing. The PC floor slab 2 </ b> A is installed on the beam members 32, 32 adjacent to each other in the arrangement direction so as to place two opposing sides.

The PC floor slab 2 has a square shape in plan view, and is supported in a state in which one opposing two sides are respectively placed on the upper surface of the girders 32, and a plurality of them are arranged without gaps in the horizontal direction X and the vertical direction Y. Has been.
The PC floor slab 2 has a notch recess 21 cut out in a U-shape at the center in the length direction of one opposing edge. Then, by making the notch recesses 21 of the adjacent PC floor slabs 2 face each other and match each other, a substantially square floor outlet 2A is formed in a plan view connecting the inside of the underground pit 3 and the large space room R. ing.

  A plurality of floor outlets 2A are arranged over the entire surface of the PC floor slab 2, and are formed in a rectangular shape by making the notch recesses 21 and 21 (see FIG. 2) provided in the adjacent PC floor slab 2 face each other. 3 (a) and 3 (b), conditioned air in the pit E (see FIG. 4) is placed in the large space room R on the PC slab 2 at least in a part of the plurality of floor outlets 2A. A blowing fan 22 that blows up is provided. In FIG. 4, the blow-up fans 22 are arranged every other one of the plurality of floor outlets 2A. FIG. 5 shows an example in which the blowing fan 22 is arranged around the equipment 8 arranged on the PC floor slab 2. By rotating the blow-up fan 22, the pit conditioned air E in the underground pit 3 can be blown up to a higher position.

  Further, as shown in FIGS. 3A and 3B, the floor outlet 2A is provided with a grating 23 along its opening. The grating 23 is formed in a lattice shape and is disposed so as to block the entire floor outlet 2A. The blowing fan 22 is fixed to the lower surface of the grating 23 and has a simple shape that fits in the floor outlet 2A.

As shown in FIG. 4, the underground pit 3 includes an outside air supply unit 4 that takes in outside air and a plurality of in-pit air conditioners 5 that adjust the temperature of the in-pit conditioned air E to a predetermined temperature.
The outside air supply unit 4 is an opening that communicates the outside of the factory 1 (outdoors) with the inside of the underground pit 3.
The ceiling 11 of the large space R is provided with an openable and closable exhaust port 12 through which the air E1 in the large space R is naturally exhausted in the open state. The exhaust port 12 is not particularly limited in configuration such as the size, shape, opening / closing method, and quantity of the opening.

  In addition, the air conditioning control system of the present embodiment is based on a temperature sensor 6 (temperature detection unit) that detects a stratification temperature of a living area (temperature stratification P) in the large space room R, and a detected value of the temperature sensor 6. And an air conditioning control unit 7 that controls the rotational speed of the blow-up fan 22.

The temperature sensor 6 is near the height P1 of the temperature stratification P set in the large space R (for example, when the temperature stratification is 2 m high, the position is approximately 2 m high from the floor) in plan view. And provided at a plurality of arbitrary locations. Here, the symbol P1 indicates the height of the temperature stratification when the blowing fan 22 is used, and the symbol P0 indicates the height of the temperature stratification when the blowing fan 22 is not used.
The air conditioning control unit 7 is connected to the temperature sensor 6, the blower fan 22, and the in-pit air conditioner 5, and receives the detection value from the temperature sensor 6 in real time or intermittently, and the rotational speed of the blower fan 22. In addition, the temperature of the conditioned air E in the pit is controlled by controlling the in-pit air conditioner 5 in conjunction with the rotational speed of the blow-up fan 22.

Next, the effect | action of the air conditioning control system of the large space building in the large space building mentioned above is demonstrated based on drawing.
As shown in FIG. 4, in the present embodiment, the outside air taken into the underground pit 3 from the outside air supply unit 4 is adjusted to a predetermined temperature by the in-pit air conditioner 5, and the adjusted inside pit conditioned air E is It passes through the floor outlet 2A and is blown into the large space R. And since it is forcibly blown upward to a predetermined height by the blow-up fan 22 provided at the floor outlet 2A, the temperature stratification P at a predetermined temperature set as a living area can be effectively formed. . For example, when the conditioned air E in the pit is cold, it is possible to suppress the cold from accumulating on the floor surface, and the temperature stratification P in the living area can be formed.

In the present embodiment, for example, a temperature sensor 6 is provided in the vicinity of a preset temperature stratification P to detect the temperature, and the air conditioning control unit 7 controls the rotational speed of the blow-up fan 22 based on the detected value. can do. That is, the height of the set temperature stratification P can be efficiently adjusted and maintained by adjusting the blowing height and blowing force of the pit conditioned air E by the blowing fan 22.
Therefore, efficient stratified air conditioning limited to a residential area (for example, a height of 2 m from the floor) can be performed, and the factory 1 has a high ceiling and a large space room R as in the present embodiment. Even energy efficient and efficient air conditioning can be performed.

Further, even if the room temperature varies in a plane due to the influence of heat generated by the equipment provided in the large space room R, the rotation speed of the blow-up fan 22 is controlled by the air conditioning control unit 7, Variations in room temperature can be suppressed. This has the advantage of reducing energy consumption and providing comfort.
In addition, since the plurality of floor outlets 2A provided in the PC floor slab 2 of the large space room R have a high degree of freedom, the heat generated by the equipment and the like provided in the large space room R out of the plurality of floor air outlets 2A. In combination, the blow-up fan 22 can be arranged. For example, the temperature stratification P of the living area can be formed by arranging a large number of blow-up fans 22 around the equipment or the like that generates heat.

  Furthermore, it is floor blowing air conditioning in which a plurality of floor blowing openings 2A are provided in the PC floor slab 2 on the underground pit 3, and the entire space in the underground pit 3 functions as an air chamber adjusted by the pit air conditioner 5. Therefore, a conventional air-conditioning duct becomes unnecessary. Therefore, there is an advantage that air conveyance power can be suppressed, power saving can be achieved, and air conditioning equipment can be effectively arranged.

  In this embodiment, in addition to controlling the number of rotations of the blow-up fan 22 by the air conditioning control unit 7, the pit air conditioner 5 is also controlled. Therefore, the pit conditioned air E adjusted to an appropriate temperature is used. It becomes possible to blow up from the floor outlet 2A, and the temperature stratification P can be formed more reliably and stably.

  As described above, in the air conditioning control system for a large space building according to the present embodiment, the temperature stratification P set in the large space room R can be adjusted and maintained efficiently and the occupant's comfort can be maintained. Can be improved.

  As mentioned above, although embodiment of the air-conditioning control system of the large space building 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, a large space factory 1 having an underground pit 3 is an application target of the floor blowing air conditioning system 1, but the present invention is not limited to this. For example, a music hall, theater, gymnasium, sports facility It is also possible to target buildings other than production factories. In addition, the pit is not limited to being an underground pit 3 and may be a pit provided on the ground floor, or a pit such as an underfloor space provided in a part of a multilayer structure. There may be.

  Note that the surface temperature of the PC slab 2 may be detected by a temperature detection unit such as the temperature sensor 3. In this case, the floor surface temperature can be adjusted to a predetermined temperature by the air-conditioning control unit 7, so that a temperature environment using the radiant heat of the floor is formed by increasing the floor surface temperature particularly during heating in winter. Can do. Therefore, the comfort of the resident can be improved.

  In the present embodiment, the air-conditioning controller 7 also controls the in-pit air conditioner 5. However, the present invention is not limited to this, and only the rotation speed of the blow-up fan 22 may be controlled.

  In this embodiment, a plurality of PC floor slabs 2 are detachably arranged with respect to the girder 32 as floor materials for partitioning the spaces of the large space and the pits. It is not limited to two. Moreover, although the floor blowout opening 2A which consists of the notch recessed part 21 is provided in the PC floor slab 2, the structure of this floor blowout opening, such as a shape, a magnitude | size, a position, and quantity, can be set suitably. In short, it is only necessary that a ventilation portion that communicates the large space chamber and the pit is formed on the floor material. Therefore, as in the present embodiment, the notch recesses 21 and 21 of the adjacent PC floor slabs 2 do not coincide with each other, and only the notch recess 21 of one PC floor slab 2 may be used as the floor outlet. .

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

1 Factory (building)
2 PC slab (floor)
2A Floor outlet 3 Underground pit
4 Outside air supply section 5 Air conditioner in pit 6 Temperature sensor (temperature detection section)
7 Air-conditioning control unit 21 Notch recess 31 Column material 32 Girder material 22 Blow-up fan E Air-conditioned air in the pit R Large space room

Claims (3)

An air conditioning control system for a large space building that controls the air conditioning of a building having a large space room with a pit under the floor,
An outside air supply section for taking outside air into the pit;
An air conditioner in the pit for adjusting the temperature in the pit to a predetermined temperature;
A plurality of floor outlets that are provided on the floor of the large space room and communicate with each other between the space in the pit and the large space room on the floor;
With
A blow-up fan that is provided in at least one of the plurality of floor outlets and blows up conditioned air in the pit adjusted to a predetermined temperature in the pit toward the large space room,
A temperature detector for detecting a stratification temperature of the living area in the large space room;
An air conditioning control system for a large space building, comprising: an air conditioning control unit that controls the number of rotations of the blowing fan based on a detection value of the temperature detection unit.   2. The large space according to claim 1, wherein the air conditioning control unit controls the air conditioner in the pit in conjunction with the rotation speed of the blowing fan, and the temperature of the air conditioned air in the pit is adjusted. Building air conditioning control system.   The air conditioning control system for a large space building according to claim 1 or 2, wherein a surface temperature of the floor is detected by the temperature detection unit.

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