JPS5829409Y2 - air conditioning duct - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to air conditioning ducts, and more specifically, the ducts are branched and connected from the side wall of the main duct connected to the blower in a direction intersecting the longitudinal direction of the main duct, and are almost parallel to each other. The present invention relates to a duct that is suitable as a plurality of branch ducts arranged in this way, and provides a duct that is lightweight, inexpensive, and easy to construct.

Generally, air conditioning ducts are manufactured by sheet metal processing.

However, such metal ducts formed by sheet metal processing have drawbacks such as difficulty in reducing weight, high cost, and a considerable number of man-hours required for construction.

The present invention solves these drawbacks, and will be described in detail below with reference to the drawings.

FIG. 1 is a structural explanatory diagram showing an embodiment of the present invention, and 10 is a dowel made of sheet material and having a cylindrical shape.

One end 11 of this duct 10 is connected to the side wall of the main duct so as to communicate with the inside of the main duct, and the other end 12 is closed.

On the other hand, a plurality of through holes 20 functioning as air outlets are provided in a staggered manner in the tube walls on both sides along the longitudinal direction of the duct 10.

Further, a support portion 13 is formed at the top of the duct 10 along the longitudinal direction.

This support part 13 has a plurality of mounting holes 3 for hanging.
0 is set.

As the sheet material, a plain weave glass cloth coated with vinyl chloride resin, a plain weave glass cloth coated with aluminum-added vinyl chloride resin, etc. are used.

When configuring such a sheet material as the duct 10, a through hole 2 acting as an air outlet 20 is formed in the sheet material.
0 is provided and then sutured into a cylindrical shape or joined with adhesive.

Note that the outlet 20 portion is reinforced as necessary.

When constructing and arranging the duct 10 configured in this way, a plurality of hook-shaped supports are attached to the indoor ceiling to correspond to the mounting holes 30 of the duct 10, and these supports are installed. It may be suspended using a tool.

FIG. 2 shows an inverted system using the air conditioning duct according to the present invention as a branch duct, where 40 is a blower and 50 is a main duct.

One end of the main duct 50 is connected to the blower 40.

Each branch duct 10 extends from the side wall of the main duct 50 to the main duct)
The branch ducts 50 are branched and connected in a direction intersecting the longitudinal direction of the branch ducts 10, and the outlet ports of adjacent branch ducts 10 are suspended so that they are parallel to each other while preventing them from overlapping each other.

By adjusting the branch portions of the blower 40 and the main duct 50 so that the static pressure and wind speed at the blowing end of each branch duct 10 become predetermined values, blowing characteristics equivalent to those of a metal duct can be obtained.

Examples of characteristics of a duct having such a configuration are as follows.

In a duct with a diameter of 54Q mm and a total length of 38 m,
A case will be described in which 12 blow-off holes each having a diameter of 150 mm are provided in a staggered arrangement facing each other.

First, when blowing air by closing 10 outlets from the blowing end, and setting the static pressure in the duct at the blowing end to 20 mmH2O and the wind speed to 12 m/s, the output at the 12th outlet from the blowing end The wind speed is 11 m/s, the output wind speed at the 18th outlet from the blowing end is 12.5 m/s, and the output wind speed at the 24th outlet from the blowing end (near the closed end) is 14
m/s.

Next, all 24 outlets were fully opened, the static pressure in the duct at the blowing end was set to 5 mmH2O, and the wind speed was set to 12 m/S.

As a result, the output wind speed at the second outlet from the blower end is 1
1m/S, the output wind speed at the 14th outlet from the blowing end is 11m/S, the output wind speed at the 20th outlet from the blowing end is 11.3m/S, the 24th outlet from the blowing end (blocked) near the edge)
The output wind speed at the outlet was 11.2 m/S.

Note that the duct had a good swelling condition under these conditions.

Furthermore, all 24 outlets were fully opened, the static pressure in the duct at the blowing end was set to 3 mmH2O, and the wind speed was set to 10.5 m/s.

As a result, the output wind speed at the second outlet from the blower end is 9
．． 5m/S, the output wind speed at the 5th outlet from the blowing end is 10m/S, the output wind speed at the 13th outlet from the blowing end is 9.8m/S, the 14th outlet from the blowing end The output wind speed at the outlet is 8 m/s, the output wind speed at the 19th outlet from the blowing end is 10 m/s, the output wind speed at the 20th outlet from the blowing end is 9.5 m/s, the blowing end The output wind speed at the 23rd outlet from the end was 9.8 m/S, and the output wind speed at the 24th outlet from the blowing end (near the closed end) was 10.5 m/S.

However, some deformation appeared in the bulging state of the duct under this condition.

As is clear from these, it was confirmed that if the static pressure inside the duct at the blowing end was 10 mmH2O or more, the same blowing characteristics as a metal duct made by conventional sheet metal processing could be obtained.

As a result of an experiment in which 16 such ducts were suspended at 3.6m intervals from the ceiling of a factory with a width of 60m and a depth of 40m,
It was confirmed that almost uniform blowout output could be obtained over the entire area.

In the above embodiment, an example of a cylindrical duct has been described, but the duct is not limited to this, and it goes without saying that various modifications can be made.

Further, it is also possible to attach means for adjusting the wind direction, air volume, etc. to the air outlet, if necessary.

Further, in this embodiment, a so-called fire-resistant material is used as the sheet material, but the sheet material is not limited to this if the usage environment does not require fire resistance.

As explained above, according to the present invention, it is possible to realize an air conditioning duct that is lightweight, inexpensive, and easy to construct, and is particularly suitable for use in warehouses, exhibition halls, agricultural greenhouses, machine factory gymnasiums, etc. with relatively large indoor volumes. It has few partitions and is suitable as a duct for a system that uniformly air-conditions the entire indoor space.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, and FIG. 2 is a side view of a system using an air conditioning duct based on the present invention as a branch duct. 10... Duct (branch duct), 20...
・Air outlet, 30...Mounting hole, 40...
Blower, 50... Main duct.

Claims (1)

[Scope of utility model registration request] The main duct connected to the blower is a plurality of branch ducts that are branched and connected in a direction intersecting the longitudinal direction of the main duct from the main duct wall connected to the blower and are arranged almost parallel to each other, and each branch duct is made of sheet material. It is formed as a cylindrical body with one end closed, and the top of each cylindrical body is provided with a support part having a plurality of mounting holes for hanging along the longitudinal direction. A plurality of air outlets are provided in a staggered manner on the pipe walls on both sides along the cylindrical body, and each of these cylindrical bodies is arranged in a suspended manner so that the air outlets of adjacent cylindrical bodies do not overlap. Air conditioning ducts.