JP3488045B2 - Air-conditioning outlet inside the ceiling for heat storage - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peak load for air conditioning during the daytime by blowing air-conditioned air directly from the ceiling to the upper floor slab to store heat in the body at night and radiating it from the body during the daytime. The present invention relates to an air conditioning outlet in the ceiling for heat storage in an air conditioning system (body heat storage air conditioning system) that reduces the heat consumption, and particularly relates to an air conditioning outlet in the ceiling for heat storage in which the heat storage effect is improved by improving the shape of the outlet. Is.

[0002]

2. Description of the Related Art A conventional air-conditioning outlet for heat storage in the ceiling of this type is a nozzle-type outlet, which is installed vertically above the floor slab on the upper floor above the ceiling so that the air-conditioning from the nozzle is performed. The blown airflow (cold air or warm air) is blown onto the bottom surface of the floor slab to store heat in the floor slab concrete (see FIG. 13). In this case, the blown airflow blown out from the nozzle is vertically blown to the floor slab and then diffuses in the ceiling. Then, during cooling, the air-conditioning blow-out airflow is lowered due to the difference in specific gravity caused by the temperature difference between the air-conditioning blow-out airflow (cool air) and the air in the ceiling. As a result, the portion directly above the nozzle in the floor slab is intensively cooled (or heated), and the temperature change other than the portion directly above the nozzle is in a relatively small state.

[0003]

That is, in the conventional one, the temperature distribution of the floor slab is formed in a concentric circle shape centering on the portion directly above the nozzle, and therefore the heat capacity of the floor slab concrete as the heat storage material is It is not used very effectively and has a low heat storage effect. By the way, the amount of heat stored in the floor slab increases as the temperature difference between the floor slab surface temperature and the air temperature near the floor slab increases, and as the wind speed near the floor slab increases. Therefore, the present invention, by correspondingly improving the air outlet, to increase the wind speed near the floor slab in the floor slab in general, and to increase the temperature difference between the floor slab surface temperature and the floor slab vicinity air temperature. Then, the floor slab can be efficiently cooled (or heated) in a generally uniform state or a state close thereto, thereby improving the heat storage effect.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 provides a high-speed blowing outlet 3 for lateral blowing at the upper end of a chamber box 2 connected to an air-conditioning air-blowing duct 1. A low-velocity air outlet 4 for lateral blowing is provided below the air-velocity outlet, and its chamber box 2 is arranged directly below the floor slab with the air outlets 3 and 4 parallel to the floor slab 5.

According to a second aspect of the present invention, there is provided an air conditioning outlet in the ceiling for building body heat storage according to the first aspect, wherein the high wind velocity outlet 3 is opened in a horizontal slit shape, and the low wind velocity outlet 4 is provided. A large opening is provided just below the high wind speed outlet 3.

The invention of claim 3 relates to claim 1 or claim 2.
At the air conditioning outlet in the ceiling for body heat storage, a plurality of the chamber boxes 2 are arranged vertically and horizontally just below the floor slab.

[0007]

DETAILED DESCRIPTION OF THE INVENTION

Part 1. FIGS. 1 to 3 show an embodiment of an air conditioning outlet in a ceiling for building body heat storage according to the invention of claims 1 and 2. In the one shown in the figure, a cubic chamber box 2 connected to the air-conditioning blower duct 1 is provided on the lower surface, and a horizontal slit-like high wind velocity outlet 3 in the form of a horizontally elongated slit is provided at the upper end on the front surface of the chamber box, Immediately below the high wind speed outlet, a large square rectangular side blow low air speed outlet 4 is provided (Fig. 1,
2), so that the chamber box 2 is arranged directly below the floor slab with its outlets 3 and 4 parallel to the floor slab 5 (FIG. 3). A punching metal 6 is provided at the low wind speed outlet 4.

With such a construction, the conditioned air is blown out at a high wind speed in parallel with the floor slab 5 from the high wind speed outlet 3 at the upper end of the chamber box 2 and the adhering flow to the floor slab 5 by the Coanda effect. Is formed to allow the conditioned air to reach a wide range and secure a high wind speed range over a wide range. In addition, the conditioned air is blown out at a low wind speed from the low wind speed outlet 4 immediately below the high wind speed outlet 3, and this is induced to be mixed with the high air speed conditioned airflow from the high wind speed outlet 3.
The temperature difference between the floor slab surface temperature and the air temperature near the floor slab is prevented from becoming small and maintained at a large temperature difference.

[Comparative Experiment] An air conditioning outlet in the ceiling for building body heat storage (hereinafter referred to as MODEL2) shown in FIGS. 1 to 3 according to the invention of claims 1 and 2, and a chamber box shown in FIGS. 10 to 12. 2 having only a high wind speed outlet 3 at the upper end (hereinafter referred to as MODEL 1), and a nozzle type outlet (hereinafter referred to as MODEL 1) that blows the air conditioning blowout air from the conventional nozzle 7 shown in FIG. 13 vertically to the floor slab surface. MODEL3)), based on the following experimental objects and methods, a comparative experiment was conducted on (1) temperature rise condition (2) wind velocity decay condition (3) heat flow of the air flow directly under the floor slab.

[Experimental object] MODEL 2 according to the inventions of claims 1 and 2 (FIGS. 1 to 3) a. The size of the chamber box 2 is 400 mm in width, 400 mm in height, and 400 mm in depth, and the slit shape is horizontally long. The high-velocity blowout port 3 for lateral blowing has a width of 300 mm and a slit interval of 17
mm, the distance from the top of the box is 25 mm, and the low wind speed outlet 4 immediately below the high wind speed outlet 3 has a width of 300 mm and a height of 142
mm, the effective opening ratio of the punching metal is 32.5%, the projection length of the high air velocity outlet 3 and the low air velocity outlet 4 thereof is 50 mm, and the diameter of the air conditioning blow duct 1 is 200 mm. b. Place the chamber box 2 immediately below the floor slab 5 (FIG. 3). MODEL1 for comparison (Figs. 10 to 12) a. The size of the chamber box 2 is 400 mm for each of width, height and depth as in the case of MODEL2.
Horizontally slit-shaped high-velocity blowout port 3 with a horizontal width of 30
0 mm, slit spacing 23 mm, distance from the top of the box 2
5mm, the projection length of the high wind speed outlet 3 is 50mm,
The air conditioning duct 1 has a diameter of 200 mm. That is, it is the same as the case of MODEL 2 except that the low air velocity outlet 4 is not provided and the slit interval of the high air velocity outlet 3 is set to 23 mm. b. Place the chamber box 2 immediately below the floor slab 5 as in the case of MODEL 2 (Fig. 12). MODEL3 (Fig. 13) which is a comparison target a. The diameter of the nozzle 7 is set to 200 mm, which is equal to the diameter of the air conditioning blow duct 1. b. Place the nozzle 7 vertically on the lower surface of the floor slab 5 with a distance of 300 mm.

[Experimental Method] (a) As shown in FIG. 3, FIG. 12, and FIG. 13, six omnidirectional hot-wire anemometers 8 are installed on the lower surface of the floor slab 5 to be tested. Spacing 300mm, 600mm, 900mm, 1 from the center or forward from the center line of the nozzle 7, respectively.
It is arranged as 200 mm, 1700 mm, and 2200 mm. Note that, in FIGS. 3, 12, and 13, only the three omnidirectional hot-wire anemometers 8 are shown, but the other three are similarly arranged on the extension line. (b) The wind speed from the high wind speed outlet 3 of MODEL1, the high wind speed outlet 3 of MODEL2, and the nozzle 7 of MODEL3 is 4 m / s, respectively.
Also, the wind speed from the low wind speed outlet 4 of MODEL 2 is set to 0.5 m / s. (c) The initial temperature in the ceiling of each experimental object is 22 ° C, the floor slab surface temperature is 26 ° C, and the blast temperature is 12 ° C.

"Experimental Results" (1) Regarding the state of temperature rise, the results shown in FIG. 14 were obtained. (2) Regarding the wind speed attenuation situation, the results shown in Fig. 15 were obtained. (3) Regarding the heat flow, the results shown in FIG. 16 were obtained. From this result, the average value of heat flow (heat storage amount) to the floor slab 5 at each 6 points by each omnidirectional hot-wire anemometer 8 is as shown in FIG. From these results, in MODEL2 according to the invention of claim 1 and claim 2, other MOD
Compared to EL1 and MODEL3, it is superior in all of the temperature rise situation, wind speed attenuation situation, and heat flow. When comparing the average heat flow to each floor slab 5 in FIG. 17, that is, the heat storage amount of the floor slab 5, 1.4 compared to the case
It was confirmed that the amount of heat storage was about 1.1 times that of MODEL1.

Part 2. FIGS. 4 to 6 show an embodiment of an air conditioning outlet in the ceiling for building body heat storage according to the invention of claims 1 to 3. FIG. 4 shows a cylindrical interior type A, and FIG. 5 shows a semi-cylindrical perimeter type B, which are basically the same as those in the above 1. is there. Interior type A
Of the perimeter type B is semi-cylindrical, and the lower surface of each is air-conditioning air duct 1.
A chamber box 2 adapted to be connected to the interior type A is provided on the entire circumferential surface of the cylindrical chamber box 2 of the interior type A, and a semi-circular shape of the semi-cylindrical chamber box 2 of the perimeter type B is provided. On the circular arc surface of the circumference, laterally blowing high air velocity outlets 3 in the form of horizontally elongated slits are provided at the respective upper ends, and a large square low lateral air velocity blowing outlet 4 is provided directly below the high air velocity outlets. A punching metal 6 is arranged at the low wind speed outlet 4.

As shown in FIG. 6, the interior type A and the perimeter type B are each arranged in plural vertically and horizontally at a required place in the ceiling immediately below the floor slab 5. , The outlets 3 and 4 are parallel to the floor slab 5. From those high wind speed outlets 3, conditioned air is blown out in parallel with the floor slab 5 at a high wind speed.
In the same manner as in the case of, the adhering flow to the floor slab 5 is formed by the Coanda effect, and the air-conditioning air flow reaches a wide range,
Secure a wide range of high wind speed. In addition, from the low wind speed outlet 4 immediately below the high wind speed outlet 3, the 1.
In the same manner as in the above case, the conditioned air is blown out at a low wind speed, and the air-conditioning blowout airflow of high wind speed from the high wind speed outlet 3 is attracted and mixed, and the temperature difference between the floor slab surface temperature and the air temperature near the floor slab is reduced. Prevents it from becoming small and maintains a large temperature difference. In this case, it can be effectively embodied in a wide floor slab 5.

3. FIG. 7 to FIG. 9 show an embodiment of another air conditioner outlet in the ceiling for building body heat storage according to the invention of claims 1 to 3. FIG. 7 shows a rectangular type interior type M, and FIG. 8 shows a rectangular type perimeter type N, which are basically the same as those in the above 1. Is. In this case, both the interior type M and the perimeter type N are provided with chamber boxes 2 each having a rectangular parallelepiped shape and the lower surface of which is connected to the air-conditioning air duct 1, and the interior type M The rectangular chamber box 2 has wide front and rear surfaces, and the rectangular chamber box 2 of perimeter type N.
On one surface of the front surface or the rear surface, a laterally blowing high wind velocity outlet 3 is formed in a horizontally elongated slit shape at each upper end portion, and
Immediately below the high wind velocity outlet, a large square rectangular low wind velocity outlet 4 is provided, and a punching metal 6 is arranged in the low wind velocity outlet 4.

Also in this case, as shown in FIG. 9, a plurality of interior type M's and perimeter type N's, respectively, as in the case of 2, are installed in the ceiling directly below the floor slab 5. The outlets 3 and 4 are arranged vertically and horizontally at required positions so that the outlets 3 and 4 are parallel to the floor slab 5. From the high air velocity outlets 3, the conditioned air is blown out in parallel with the floor slab 5 at a high wind velocity in the same manner as in the case 2 above, and the adhering flow to the floor slab 5 is formed by the Coanda effect. By doing so, the air conditioning airflow can reach a wide range, and a high wind speed range can be secured over a wide range. Further, from the low wind speed outlets 4 immediately below the high wind speed outlets 3, the conditioned air is blown out at a low wind speed in the same manner as in the cases 1 and 2, and the high air speed outlets 3 The temperature difference between the surface temperature of the floor slab and the air temperature near the floor slab is prevented from becoming small and is maintained at a large temperature difference by attracting and mixing with the high-speed air-conditioning blowout airflow. Also in this case,
It can be effectively embodied in a wide floor slab 5.

[0017]

According to the inventions of claim 1, claim 2 and claim 3, since it is the above-mentioned structure, the floor slabs in general, in accordance with the size, form, etc. of the floor slabs 5,
The wind speed near the floor slab can be increased to increase the temperature difference between the surface temperature of the floor slab and the air temperature near the floor slab, and the floor slab 5 can be cooled (or heated) generally uniformly or close to it. Therefore, the heat capacity of the floor slab concrete as a heat storage material can be used more effectively, the heat storage effect can be improved, and the heat storage efficiency of the body heat storage air conditioning system can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment 1 of the invention according to claims 1 and 2. FIG.

FIG. 2 is a side view of the same embodiment.

FIG. 3 is an explanatory diagram related to an experimental method in the same embodiment.

FIG. 4 is a perspective view of an interior type showing Embodiment 2 of the invention according to claims 1 to 3.

FIG. 5 is a perspective view of a perimeter type according to the same embodiment.

FIG. 6 is a plan view showing a layout according to the same embodiment.

FIG. 7 is a perspective view of an interior type showing Embodiment 3 of the invention according to claims 1 to 3.

FIG. 8 is a perspective view of a perimeter type according to the same embodiment.

FIG. 9 is a plan view showing a layout according to the same embodiment.

FIG. 10 is a front view of a comparative test object.

FIG. 11 is a side view of the object of the comparative experiment.

FIG. 12 is an explanatory diagram related to an experiment method in the comparative experiment object.

FIG. 13 is an explanatory diagram related to an experimental method in another comparative experimental object.

FIG. 14 is a graph showing the results of a comparative experiment relating to the temperature rise situation.

FIG. 15 is a graph showing the results of a comparative experiment relating to the wind speed attenuation state.

FIG. 16 is a graph showing the results of comparative experiments related to heat flow.

FIG. 17 is a graph of a heat flow average value to a slab based on a graph of a comparative experiment result related to heat flow.

[Explanation of symbols]

1 ... Air-conditioning air duct 2 ... Chamber box 3 ... High wind velocity outlet 4 ... Low wind velocity outlet 5 ... Floor slab 6 ... Punching metal 7 ... Nozzle A ... Interior type B ... Perimeter type M ... Interior type N ... Perimeter type

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 10-311566 (JP, A) JP 1-208632 (JP, A) JP 61-256189 (JP, A) JP 5- 322247 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24F 5/00 F24F 13/06

Claims (3)

(57) [Claims] 1. A high-velocity air outlet 3 for lateral blowing is provided at an upper end of a chamber box 2 connected to an air-conditioning air duct 1, and a low-velocity air outlet 4 for lateral blowing is provided under the high-air velocity outlet. An air conditioning outlet in a ceiling for building body heat storage, characterized in that the chamber box 2 is arranged immediately below the floor slab with the outlets 3 and 4 thereof arranged in parallel with the floor slab 5. 2. The heat storage body structure according to claim 1, wherein the high wind speed outlet 3 is opened in a horizontal slit shape, and the low wind speed outlet 4 is opened directly below the high wind speed outlet 3. Air conditioning outlet in the ceiling. 3. The in-ceiling air conditioning outlet for building body heat storage according to claim 1, wherein a plurality of the chamber boxes 2 are arranged vertically and horizontally just below a floor slab.