JP2001165496A - Chamber for supplying conditioned air to stepwise audience seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamber for supplying conditioned air to stepwise audience seats, which can be formed inexpensively in safety and excellent in workability and economy, in which minimum necessary space around audience seats can be air conditioned and a homogeneous temperature environment can be imparted in safety at low cost for all seats with substantially no limitation to the arrangement of seats. SOLUTION: In a chamber for supplying conditioned air to stepwise audience seats formed by arranging a large number of deformed precast concrete units 3 on a beam 2, a laterally elongated air outlet passage 7 having a slit-like opening is provided above the longitudinal wall part of the step and an opening 13 in the bottom wall of the chamber extending from an air conditioner 12 and communicating with a duct 12 is covered with a straightening plate 11 having an air supply regulation hole 14 while being spaced apart from the bottom wall of the chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning / ventilation chamber for a stair-shaped spectator seat, and more particularly, to a staircase which is excellent in economy and workability and can provide a uniform temperature environment to all the seats. The present invention relates to an air-conditioning ventilation chamber for a spectator seat.

[0002]

2. Description of the Related Art Stair-shaped spectator seats are known, such as indoor stadiums and theaters, which use various air conditioning systems. For example, there is an air conditioning system that blows predetermined air from a ceiling or a side wall and circulates the entire space in the building. Although these floor structures are not so limited, they have high ceilings because of the structure with stair-shaped spectator seats, and the interior is a vast space. Despite being part of the space, air conditioning is performed in most of the voids other than the audience's living area, resulting in reduced efficiency and loss of air conditioning energy. There was a problem of doing. Also, regarding the construction of air conditioning equipment, the conventional air blowing method requires work at high places on the ceiling and wall of the building, which is not only difficult to construct, but also requires special consideration for safety measures. There was a difficulty to do.

[0003] Therefore, a system has been adopted in which an air outlet is provided in a vertical wall portion of a corrugated floor portion to partially air-condition a passenger seat portion. As an air-conditioning blower chamber for a staircase seat adopting these air conditioning systems, for example, between a floor slab and a staircase seat floor formed using a plate material such as a PC board or an iron plate above the slab. The duct is extended from the air conditioner and connected to the floor slab, and an air outlet is opened in the vertical wall of the staircase-shaped audience floor.

Further, as another example of an air-conditioning blower chamber employing the same air-conditioning system, a front vertical wall is formed on a receiving beam from a front portion of a horizontal floor wall downward, and a rear portion is formed upward from a rear end upper surface. It is also known that a large number of precast concrete units having standing walls are arranged so that the rear and front portions thereof overlap each other, and a horizontal space surrounded by upper and lower units is configured as a chamber.

[0005]

The air conditioning system using a chamber formed from a floor slab and a stepped audience floor is more efficient than an air conditioning system that blows out from a ceiling or the like. Although workability and safety have also been improved, the presence of floor slabs still leaves room for improvement in economics and workability.

In the case of an air conditioning system using a chamber provided with the above-mentioned precast concrete unit, a gap between the units, that is, a gap between the lower surface of the vertical wall of the upper unit and the upper surface of the floor wall of the lower unit. If the air outlet is an air outlet, the air outlet is flush with the floor, so that dirt and dust easily accumulate in the air-conditioning chamber. Also, dust and dirt easily enter the chamber during cleaning, and substantially the part It is impossible to make a blow outlet, and as a result, the blow outlet from the chamber must be specially constructed on the vertical wall, and because of the nature of the member called precast concrete, it is not possible to make a hole again after production However, there is a remarkable restriction that the seating arrangement must be decided at the beginning of construction, and the architectural plan and equipment plan must be thoroughly coordinated.

Further, since the chamber composed of the above-mentioned floor slab and the stepped audience floor or the chamber in which the pre-con unit is disposed is formed in a horizontally long shape, a difference in wind speed is apt to occur due to the outlet, and the uniformity is obtained. It is difficult to obtain ventilation.

[0008] In view of the above, the present invention is excellent in workability and economy, and can perform air conditioning only in the minimum necessary space around the audience seats. The present invention proposes an air-conditioning and air-blowing chamber for a staircase-shaped audience seat that can be formed at low cost and can provide a uniform temperature environment to all the audience seats.

[0009]

According to a first aspect of the present invention, there is provided an air-conditioning / ventilation chamber for solving the above-mentioned problems. 6 are formed by arranging a large number of deformed units 3 made of precast concrete having an F-shaped cross section on the receiving beam 2 so that the front part of the upper unit overlaps the rear part of the lower unit. An air-conditioning blower chamber of a stepped spectator seat, the floor wall 4 of the upper unit 3
And the front and rear walls 5 and 6 of the lower unit 3 and the floor wall 4 between the front and rear walls, and a gap between the lower surface of the floor wall tip of the upper unit 3 and the upper surface of the front wall 5 of the lower unit 3. A duct extending from an air conditioner, having a formed air outlet passage 7
An air-conditioning air-blowing chamber for a stair-shaped spectator seat, wherein an opening portion 13 of the chamber bottom wall which is communicated with 12 is covered at a distance from the chamber bottom wall by a rectifying plate 11 having a ventilation adjusting hole 14. It was constituted as.

The air-conditioning air-blowing chamber A according to the second aspect of the present invention is configured as the air-conditioning air-blowing chamber according to the first aspect, wherein the opening ratio of the air-blowing adjusting holes 14 is 50% or less.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

The air-conditioning and air-blowing chamber A of the staircase-shaped audience seat of the present invention is formed by arranging a large number of irregularly shaped units 3 on the receiving beam 2.

The deformed unit 3 is made of precast concrete. The rear unit is fixed on the receiving beam 2 with the rear lower surface in contact therewith, and the front unit is separated from the upper surface of the receiving beam 2 and protrudes forward. A front wall 5 erected across the middle part of the upper surface of the floor wall 4 in the front-rear direction, and a rear wall 6 erected across the rear edge of the upper surface of the floor wall 4 to form a horizontal F-shaped cross section. I have.

Then, such a modified unit 3 is arranged such that the lower surface of the projecting portion of the floor wall 4 of the upper unit is supported by the rear wall 6 of the continuous lower unit 3, and the projecting portion of the floor wall of the upper unit 3 is formed. And the front and rear walls 5, 6 of the lower unit 3
The portion surrounded by the floor wall between the front and rear walls is configured as an air-conditioning / blowing chamber A. Further, the air-conditioning / blowing chamber A includes an air blowing passage 7 formed by a gap between the lower surface of the front wall 5 of the upper unit 3 and the upper surface of the front wall 5 of the lower unit 3.

The form of the air blowing passage 7 is the modified unit 3
Can be variously selected depending on the lower surface of the front end portion of the floor wall 4 and the upper surface of the front wall 5 of the irregularly shaped unit 3. For example, when each of them is a flat surface, a horizontal air blowing passage 7 can be formed, and the lower surface of the front end of the floor wall 4 is formed as an inclined surface that is inclined downward, and the front part of the upper surface of the front wall 5 is formed as described above. If it is formed on an inclined surface facing the inclined surface, it is possible to form the air blowing passage 7 whose tip end is inclined downward.

Since the opening of the air blowing passage 7 can be formed in a horizontally elongated slit shape as described above, the air blowing passage 7 is compared with a conventional passage having a large number of independent through holes penetrating through the vertical wall of the step floor. A good suitable temperature region can be formed in the vicinity of the seat, and a better temperature portion can be obtained particularly in the case where the tip is inclined obliquely downward.

The arrangement of the deformed units 3 is not limited to the vertical direction, but is also arranged in the horizontal direction according to the size of the staircase-shaped audience seats. In addition, airtightness can be imparted to a contact portion between the deformed units 3 by a sealing material such as a gasket previously fixed to the corresponding portion.

The length of the air-conditioning air-blowing chamber A configured as described above may be determined as appropriate. However, in consideration of uniform air-blowing, for example, it is good to set the length such that 20 seats can be taken. However, it is not limited to this.

In the illustrated example, a step-like projection 8 having a horizontal surface is provided at a predetermined interval on the upper surface of the inclined receiving beam 2, and the irregularly shaped unit 3 is provided between the step-like projections 8. A horizontal floor wall 4b extending forward by projecting forward from the front end of the inclined floor wall 4a abutting and fixed on the receiving beam 2 with the base end abutting on the step-like projection 8 is provided. The floor wall 4 is constituted.

Various methods are available for mounting the seat on the floor structure having the chamber A.
For example, as shown in the figure, each seat can be attached by fixing the base end of the support 9 to the front surface of the front wall 5 of the odd-shaped unit 3 arranged. It is also possible to fix the base end of the column and mount the seat.
With respect to the seat mounting position, the opening of the outlet passage 7 can be formed in a horizontally long slit shape on the front surface of the front wall 5, so that an arbitrary position can be selected and change can be made later.

Further, the chamber A of the present invention comprises a current plate 11
It has. As shown in FIG. 2, the current plate 11 is connected to a duct 12 extending from an air conditioner (not shown) to form an opening 13 opened in the chamber bottom wall (inclined floor wall 4a) with a gap between the chamber bottom wall. A ventilation adjustment hole 14 is provided, and the air-conditioning ventilation introduced into the chamber A is blown relatively uniformly to any part of the horizontally long chamber. This is provided to blow air from the horizontally long and flat air outlet passage 7 communicating with the seat A to each customer seat relatively uniformly and without high wind pressure. In FIG. 2, reference numeral 15 denotes a supply chamber.

In this embodiment, as shown in FIG. 3, a rectangular plate-shaped rectifying plate 11 covering a circular opening 13 is provided with support rods 16 at four corners.
It is supported by and provided. Various materials can be selected as the material of the current plate 11 as long as it has rigidity to withstand wind pressure. For example, a metal or the like can be selected as needed.

Further, by changing the opening ratio of the air blowing adjustment hole 14, the air volume in the chamber can be made uniform, and accordingly, the air blowing speed from each part of the air blowing passage 7 can be averaged as much as possible. Can be

The opening 13 from the duct 12 is smaller than the air-conditioning air-blowing chamber A, and the air-blowing passage 7 blows air to the vicinity of each seat 10 in a state of communicating horizontally, so that air is blown to each customer seat. It tends to be relatively variable. Therefore, by providing the rectifying plate 11, while basically changing the air flow from the duct in the horizontal direction,
A part is released in the vertical direction from the ventilation adjusting hole 14 so that the ventilation can be performed as uniformly as possible in the horizontally long chamber A and the air blowing passage 7.

From such circumstances, the relationship between the opening ratio of the ventilation adjusting hole 14 and the distribution of the blowing air velocity was examined. The aperture ratio of the current plate is 12
%, 30%, 50%, and the case without a rectifying plate.
Under a condition of ° C. and a supply air flow rate of 660 CMH / 20 persons, a change in a blowing wind speed due to a difference in distance from an opening in the chamber was examined. FIG. 4 shows the results.

As is apparent from FIG. 4, when the current plate 11 is not provided, the blowing air velocity near the opening 13 becomes extremely high, which is not preferable. Maximum wind speed at an aperture ratio of 50% is about 1.6
m / sec, which is considered to be a permissible limit of the blowing air velocity, and therefore, it is preferable that the opening ratio of the air blowing adjustment hole 14 is 50% or less.

[0027]

As described above, the air-conditioning and air-blowing chamber for the stair-shaped spectator seat according to the present invention can be formed simply by arranging the irregularly shaped unit on the receiving beam by adopting the above-mentioned structure. It can be molded, is excellent in accuracy, and is extremely excellent in workability.

In addition, since the air blowing passage can be formed at the same time as the unit is assembled, and the opening of the air blowing passage can be formed in a horizontally elongated slit shape, it can be constructed without concern for the layout of the seat, and the layout can be changed. Can handle enough.

Further, the air conditioning system using the air-conditioning ventilation chamber can efficiently cool and heat only the area around the stair-shaped spectator seats with a minimum necessary air volume.
You can make an energy-saving system. Therefore, especially in a large space building, the air conditioning efficiency is improved, the air conditioning energy is greatly reduced, and an air conditioner having an excellent energy saving effect can be provided.

Further, the chamber of the present invention is easy and safe because its construction is performed at a low place in a building, and is economical because the duct is short and the suppression of the fan of the air conditioner can be reduced. Thus, an effect of enabling a proper air conditioning is obtained.

Further, when the opening ratio of the ventilation adjusting hole is set to 50% or less, the air velocity from the air blowing passage can be made not so large in any part, and therefore, the audience cannot be excessively increased. A comfortable spectator environment can be maintained without hitting cold or warm air.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a main part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the embodiment.

FIG. 3 is an exploded perspective view of a current plate portion of the embodiment.

FIG. 4 shows a test result of a wind speed depending on a difference in aperture ratio of the current plate of the example.

[Explanation of symbols]

2 ... receiving beam, 3 ... deformed unit, 4 ... floor wall, 5 ... front wall, 6
... Rear wall, 7 ... Air outlet passage, 11 ... Rectifier plate, 12 ... Duct,
13 ... opening, 14 ... ventilation adjustment hole, A ... air-conditioning ventilation chamber

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masanori Nitori 4-1-1 Odori Nishi, Chuo-ku, Sapporo-city, Hokkaido Inside Takenaka Corporation Hokkaido Branch (72) Inventor Noriyuki Takahashi 1-5-1-5 Otsuka, Inzai-shi, Chiba Pref. Inside Takenaka Corporation Technical Research Institute (72) Inventor Yoshiaki Higuchi 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside Takenaka Corporation Technical Research Institute (72) Inventor Ikumasa Misaka 1-chome Otsuka, Inzai City, Chiba Prefecture 5 1 Inside Takenaka Corporation Technical Research Institute

Claims (2)

[Claims] 1. A precast concrete deformed unit 3 having a cross-sectionally F-shaped cross section formed by erected front and rear walls 5 and 6 traversing an intermediate portion of the upper surface of the floor wall 4 in the front-rear direction and a rear edge of the upper surface, respectively. A stair-shaped audience seat air-conditioning / blowing chamber formed by arranging a large number on the receiving beam 2 such that the front part of the upper unit overlaps the rear part of the lower unit, the floor wall 4 of the upper unit 3; Front and rear walls 5, 6 of lower unit 3
And a floor wall 4 between the front and rear walls, a lower surface of the floor wall tip of the upper unit 3 and a front wall 5 of the lower unit 3.
An opening 13 of the chamber bottom wall, which is provided with an air blowing passage 7 formed by a gap with the upper surface and communicates with a duct 12 extending from the air conditioner, is formed by a flow regulating plate 11 having a ventilation adjusting hole 14 formed therein. An air-conditioning and air-blowing chamber for the staircase-shaped audience seats, characterized by being covered at intervals. 2. The air-conditioning blower chamber according to claim 1, wherein an opening ratio of the blower adjusting hole 14 is 50% or less.