JP2003139378A - Chamber for air conditioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size and the weight of a box 10, to keep airflow balance favorable, to reduce elimination of noises due to airflow and to make construction at the site easy. SOLUTION: This chamber for air conditioning is provided with an air inlet 11 and a plurality of air outlets 12 on the outer face of a rectangular box 10. The air inlet 11 is provided at the center of a long-side face of the box 10, while the air outlet 12 is provided symmetrically against the shaft center of the air inlet 11 and not located at a projection position on the opposite face of the air inlet. It shall be so set that the distance A between the centers of the symmetrical air outlets on the same face of the box = the width d1 of the air inlet + the width d2 of the air outlet opposing the air inlet + 100 mm or more, the width W of a short-side face = the width d3 of the air outlet on the short-side face + (50 to 150) mm, the distance C from the center of the air outlet to the side end = ((the width d4 of the air outlet on its air inlet side)/2) + (25 to 75) mm, and the distance D from the center of its outlet and the center of the air inlet = (d1/2) + (d4/2) + 50 mm or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air distribution chamber arranged in the ceiling or the like of an air conditioning facility for a building.

[0002]

2. Description of the Related Art Air conditioning equipment in various buildings, such as office buildings and factories, uses air whose temperature and humidity have been adjusted by an air conditioner from a plurality of outlets arranged on the ceiling, etc., through ducts, etc. A method of blowing out air is common.

In this air conditioning equipment, a chamber is used as a device for distributing air from the air conditioner to each outlet.
As this chamber, in JP-A-2000-193298 and JP-A-2001-27444, as shown in FIG. 9, an air inlet 2 and a plurality of air outlets 3 are provided on the outer surface of the box body 1. Is disclosed.

[0004]

In the above air-conditioning chamber, when the air outlet 3 is provided on the surface facing the air inlet 2, the length and bend of the flexible duct to be connected to the air outlet 3 is increased. Regardless of the condition, a relatively large amount of air tends to be delivered due to the influence of the air flow direction (velocity pressure). Therefore, as shown in the figure, the air outlet 3 is not provided on the facing surface. In this case, from the viewpoint of suppressing the increase in size, the box body is rectangular, and the air outlet 3 is provided on the long side surface, and the air outlet 3 is provided from the air inlet 2 provided on the short side surface. They will be located one after another in the direction away from each other. For this reason, in order to send out a uniform amount of air from each of the air outlets 3, an air volume adjusting device is attached downstream of the blowout device or the air outlet 3 to adjust the air amount. Difficult and requires a lot of time.

Further, in this air conditioning chamber, since the air outlets 3 are provided only on the two sides of the side of the box body 1, if the number of the air outlets 3 increases, the box size becomes large and long,
Sometimes it does not fit in a narrow installation space such as the ceiling, and it is difficult to perform on-site installation work because it is large and heavy. Further, when an air conditioner is connected in the immediate vicinity of the air inlet 2, the length from the air conditioner to the chamber tip becomes long, and installation is difficult due to the influence of the beams of the building.

Further, although the above publication discloses that an air flow rate adjusting orifice is attached to each of the air outlets 3, the presence of the orifice causes a large pressure loss.
The aperture ratio of the orifice has to be changed depending on the size of the box body 1 and the connection size of the flexible duct, and it is difficult to determine the aperture ratio. Further, the air flow tends to be disturbed at the air volume adjusting orifice portion, and the noise generated by the air flow tends to increase. Further, a flexible duct or the like connected to the air outlet 3 may vibrate due to the disturbance of the air flow, which may shorten the life of the flexible duct.

As described above, in the branch chamber where the air flow balance is poor, the air-conditioning state of each room may be different,
The air conditioning condition in the room may become non-uniform and the air conditioning efficiency may be reduced. In addition, the noise generated by the air flow increases from the portion that has sent out a large amount of air. Further, not only the generated noise but also the service life of the flexible duct is adversely affected by the orifice for making the air flow balance uniform.

Therefore, an object of the present invention is to provide a chamber for air conditioning which is compact and lightweight, maintains a good air flow balance, and has a small amount of noise caused by an air flow and which can be easily installed on site.

[0009]

In order to achieve the above object, the present invention provides a box having a rectangular shape, an air inlet opening provided on a long side surface thereof, and a projection position on the facing surface of the air inlet opening. We decided not to provide an air outlet.

In this chamber, the air from the air inlet first comes into contact with the facing surface and reaches the side. At this time, since the air inlet is on the long side surface, the distance to the facing surface is the length of the short side and is short, and the diffusion of the inflow air is small. Therefore, most of the inflowing air hits the facing surface and changes its direction. Further, since there is no air outlet on the opposing projection surface of the air inlet, the amount of air that short-circuits from the air inlet to the air outlet immediately and is small. Therefore, the air pressure is uniform over the entire area of the box body, and the air of equal pressure is sent out from each air outlet.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION As an embodiment of the present invention, in an air conditioning chamber in which an air inlet and a plurality of air outlets are provided on the outer surface of a rectangular box, the air inlet is a long side surface of the box. Is provided in the center of the air inlet, the air outlet is located symmetrically with respect to the axis of the air inlet, and is not located at the projected position on the facing surface of the air inlet. You can

In this structure, the distance between the centers of the symmetrical air outlets on the same surface of the box is A, the width of the air inlet is d1, and the width of the air outlet opposite the air inlet is d2.
And A = d1 + d2 + 100 mm or more, and the width of the air outlet on the short side surface of the box is d.
3, where W is the width of the short side surface, W = d3 + (50
~ 150) mm is preferable.

Further, when the air outlet is provided on the same surface where the air inlet is provided, the width of the air outlet is d4,
When the distance from the center of the air outlet to the side edge of the box is C and the distance between the center of the air outlet and the center of the air inlet is D, C
= (D4 / 2) + (25 to 75) mm, D = (d1 /
2) + (d4 / 2) +50 mm or more. Further, when four or more air outlets facing each other are provided, P = d2 + (50 to 15), where P is the distance between the centers of the air outlets located on both sides of the air outlet.
0) mm is preferable.

As another embodiment, in an air conditioning chamber in which an air inlet and a plurality of air outlets are provided on the outer surface of a rectangular box, the air inlet is provided at the center of the long side surface of the box. The air outlet is symmetrically positioned with respect to the axis of the air inlet, and the air inlet is a rectangle long in the longitudinal direction of the long side surface, and the ratio of the long side to the short side is 3 When the long side is longer than 1, the distance between the centers of symmetrical air outlets on the same plane of the box is A, and the width of the air outlet facing the air inlet is d2. A configuration may be adopted in which the distance A between the air outlets on the inlet facing surface is set to d2 + 50 mm or more.

The distance between the air outlets facing such an air inlet: A, the width W of the short side surface of the box and the width of the air outlet,
And the relationship between the air outlet from the box end and the relationship between the distributed dynamic pressure in the chamber and the static pressure is such that the air is blown out from each air outlet with good uniformity, and the difference in the air volume from each air outlet is Keep within ± 10%. On the other hand, when the distance A between the air outlets in front of the air inlets, the width W of the box body, and the distance C from the edge of the box are different from the above dimensions, the dynamic pressure is It is distributed unevenly and the air volume balance deteriorates.

The number of air outlets depends on the site specifications,
Although there are various numbers such as 2 to 8, the number is appropriately determined according to the construction mode. For example, in the case of four, two facing air inlets and two side surfaces, two facing air inlets and two air inlet sides 2
By maintaining the above relationship even in various combinations such as one, two side faces and two air inlet side, one air inlet facing, two side faces, one air inlet side,
The air volume balance can be kept good.

By doing so, it is possible to maintain a good air flow balance in the box without using air flow control resistors such as orifices at the plurality of air outlets. Also, since the air outlet can be provided on the same surface as the air inlet,
Flexible ducts can be installed without difficulty. further,
By not using the air flow rate adjustment resistor, pressure loss and noise and vibration generated by the air flow can be suppressed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment is shown in FIGS. 1 and 2, in which an air inlet 11 is provided at the center of the long side surface of a rectangular box 10.
The air outlets 12a, 12b, 1 are provided on the respective surfaces around the air outlets
2c, 12d, 12e, 12f (general reference number: 12) are provided, and the air outlet is located at the projection position of the same size as the air inlet 11 on the facing surface of the air inlet 11. Absent. The box body 10 includes a heat insulating wall 10a.

The air outlets 12 have the following relationship. That is, the distance (pitch) between the centers of the air outlets 12 is A, the width of the air inlets 11 is d1, and the air inlets 1 are
When the width of the air outlets 12 facing each other is d2, A = d
1 + d2 + 100 mm or more, when the width of the air outlet 12 in the direction orthogonal to the air inlet 11 is d3 and the width of the short side surface of the box 10 to which the air outlet 12 is attached is W, W = d3 +
(50 to 150) mm, the width of the air outlet 12 on the air inlet 11 side is d4, the distance between the center of the air outlet 12 and the end of the box 10 is C, and the center of the air outlet 12 and the center of the air inlet 11 are When the distance is D, C = (d4 / 2) + (25-7
5) mm, D = (d1 / 2) + (d4 / 2) +50 mm
The above relationship holds.

In this embodiment, as shown in FIG. 1, a flexible duct 14a from the air conditioner is connected to the air inlet 11 and a flexible duct 14b to each room is connected to each air outlet 12. An air outlet 15 is provided at the end.

At this time, in this embodiment, the air inlet 1
Since the air outlet 12 is provided on the same surface as 1, the flexible duct 14b or the like to be connected can be easily piped as shown in FIG. 3 (a). On the other hand, in the conventional example of FIG. 9, as shown in FIG. 3B, the flexible duct 14b is bent more than in this example, and the pipe becomes unreasonable.

FIG. 4 shows another embodiment. In this embodiment, four air outlets 12 are provided on the facing surface of the air inlet 11. In this case, the air outlets 12, 1
When the distance between the centers of 2 is P, P = d2 + (50-
150) mm.

In the above embodiment, as shown in FIG.
The air outlet 12 on the side of the air inlet 11 may be deleted, or
The side air outlet 12 can be eliminated as shown in FIG.

In the embodiment shown in FIG. 7, a large number of air outlets 12 are provided on the opposite surface of the air inlet 11, and the air inlet 12 is also provided on the opposite projection surface of the air inlet 11. In this case, the cross-sectional shape of the air inlet 11 is rectangular, and the ratio of the long side to the short side is greater than 3: 1.
A of the air outlet 12 on the opposite side is set to d2 + 50 mm or more. The rectangular shape of the air inlet 11 also includes a long hole such as an ellipse.

[0025]

[Test Example] In the embodiment shown in FIG.
Vertical: horizontal: width (W) = 350: 850: 250 mm (hereinafter the same), A: 600, C: 125, D: 300, d
_{1: 300, d 2: 150} , d 3: 150, d 4: 15
The air-conditioning chamber with 0 was manufactured, and as shown in FIG.
The air outlets 11 and 12 (12a and 12) of this chamber
b)) is connected to flexible ducts 14a and 14b, which are spiral ducts, respectively, and the air inlet 1
To ^{1, 1554,1825,2126 (m 3 / s} ) each of the air outlet port 12a when it sent the respective air volume, 12b · ·
Table 1 shows the results of measurements of the wind speeds from the duct outlet to the anemomaster anemometer. In this table, the air flow rate balance represents the average wind speed of the air outlets 12a, 12b ... (The total wind speed of 6 outlets / 6) and the wind speed ratio of each air outlet in percent.

[0026]

[Table 1]

According to the results of this test, it can be seen that the air conditioning chamber is excellent because the air flow rate balance between the air outlets is kept within ± 10%.

[0028]

As described above, according to the present invention, since the box body forming the chamber body is rectangular and the long side surface of the rectangle is provided with the air inlet, the air flow balance is kept good and the pressure loss, Generation of noise due to airflow can be suppressed. Also, since the box shape is horizontally long with respect to the air inlet,
When an air conditioner is connected in the immediate vicinity of the chamber, there is no influence of the beams of the building and the installation is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

2A is a plan view of the embodiment, FIG. 2B is a front view of the same embodiment, and FIG.

FIG. 3 shows a piping mode of a flexible duct, (a)
Is an example, (b) is a conventional example

FIG. 4 is a plan view of another embodiment.

FIG. 5 is a plan view of another embodiment.

FIG. 6 is a plan view of another embodiment.

7A is a plan view of another embodiment, and FIG. 7B is a front view of the same.

[Fig. 8] Explanatory drawing of the test

FIG. 9 is a plan view of a conventional example.

[Explanation of symbols]

10 rectangular box 11 Air inlet 12, 12a to 12f Air outlet 14a, 14b flexible duct 15 Air outlet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Junji Kakura             1-12-19 Kitahori, Nishi-ku, Osaka City Stock Association             Kurimoto Ironworks (72) Inventor Furuya Masato             1-12-19 Kitahori, Nishi-ku, Osaka City Stock Association             Kurimoto Ironworks F-term (reference) 3L080 AA05 AC01 AD01

Claims (6)

[Claims] 1. In an air conditioning chamber having an air inlet 11 and a plurality of air outlets 12 on an outer surface of a rectangular box 10, the air inlet 11 is provided at the center of a long side surface of the box 10. The air outlet 12 is located symmetrically with respect to the axis of the air inlet 11, and the air inlet 1
1. An air conditioning chamber characterized in that it is not located at a projected position on the facing surface of 1. 2. The air according to claim 1, wherein the distance between the centers of the symmetrical air outlets 12 on the same surface of the box body 10 is A, the width of the air inlet 11 is d1, and the air facing the air inlet 11 is air. When the width of the outlet 12 is d2, A = d1 + d2
An air conditioning chamber characterized by having a length of +100 mm or more. 3. The box body 10 according to claim 1 or 2.
When the width of the air outlet port 12 on the short side surface of d is d3 and the width of the short side surface is W, W = d3 + (50 to 150) mm
An air conditioning chamber characterized by the following. 4. In any one of claims 1 to 3, when the air outlet 12 is provided on the same plane as the air inlet 11, the width of the air outlet 12 is d4, and the air outlet 12 is C is the distance from the center to the side edge of the box, and the air outlet 1
2 When the distance from the center of the air inlet 11 is D,
C = (d4 / 2) + (25 to 75) mm, D = (d1 /
2) + (d4 / 2) +50 mm or more, the air-conditioning chamber. 5. In any one of claims 1 to 4, when four or more air outlets (12) facing the air inlet (11) are installed, the air outlets (1) located on both sides of the air outlet (1) are located.
When the distance between the centers of 2 is P, P = d2 + (50-
An air conditioning chamber characterized in that it is 150) mm. 6. An air conditioning chamber having an air inlet 11 and a plurality of air outlets 12 on the outer surface of a rectangular box 10, wherein the air inlet 11 is provided at the center of the long side surface of the box 10. The air outlet 12 is located symmetrically with respect to the axis of the air inlet 11, and the air inlet 11
Is a rectangle long in the longitudinal direction of the long side surface, and the ratio of the long side to the short side is longer than 3: 1, the symmetric air outlets 12 on the same surface of the box body 10 are The distance between the centers is A, and the width of the air outlet 12 facing the air inlet 11 is d.
2, the air outlet 11 and the air outlet 12 on the opposite surface
An air-conditioning chamber, characterized in that a distance A therebetween is d2 + 50 mm or more.