JPS58160694A - Connecting structure of duct - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a duct for air conditioning, and particularly to a structure for connecting a connection port such as an air outlet to a main duct.

Normally, when a large space such as a knee or a building is near-conditioned with a single air conditioner, a main duct connected to the air conditioner is installed, and the air outlets are branched off from the main duct as appropriate. As is well known. When branching or connecting the outlet to the main duct, the installation location of the main duct is determined by factors such as the structure and space described in 1. However, the outlet provides near-conditioning uniformly throughout the space. Since the installation location is determined based on factors such as air conditioning efficiency, it is often not possible to install the air outlet directly below or near the outlet formed in the main duct. The air outlet is connected to the main duct via a duct.

Conventionally, square ducts with a rectangular cross section are used as branch ducts, but square ducts are subject to slight deformation and are limited in the directions in which they can be connected. The relative position of the air outlet and the main duct cannot be accommodated, and even if the connecting branch ducts are standardized, a considerable amount of space must remain at the construction site without matching dimensions. First, it was extremely difficult to improve the efficiency of construction. Therefore, in the past, branch ducts were built individually by measuring the dimensions on site,
Alternatively, a flexible duct was interposed in the middle of the branch duct, but such a construction method and structure requires a lot of man-hours, is unsightly, and also increases the overall length of the branch duct, resulting in an increase in environmental costs. There were four problems, including increased pressure loss and increased pressure loss.

This invention was made in view of the above circumstances, and can be easily constructed when connecting a connection port such as an air outlet to the main duct! ! The purpose of this is to provide a unified structure, and its characteristics are that the branch duct that connects the connection port of a blow-off chamber etc. with a blow-off port to one duct has a circular cross section and a width of about 1/4 A pair of curved pipes forming an arc shape, a single pipe having a *W-shaped cross section and a circular cross section provided in the joints of both to connect them to each other, and the curved pipe to be connected to the connection port or the outlet of the main duct. This is achieved by combining the second tube with a straight tube with a circular cross section provided on one side of the tube.

Embodiments of the present invention will be described below with reference to the attached document 11. FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a plan view thereof, in which the main duct 1 is fixed to a beam (not shown) or the like, and the blowing chamber 2 is connected to the main duct. 1
The main duct 1 and the blowing chamber 2 are connected by a branch duct 3. In other words, at a predetermined location of the main duct 1! 4 are branched and connected, and the lower end opening of the single 1!4 is made into a circular outlet 5, and a single pipe 6 is attached to the upper surface of the Suita chamber 2, and its upper end opening is The branch duct 3 provided between the outlet port 5 and the mII lower part has a circular cross section, and a pair of curved pipes 8 having a circular cross section and a quarter arc shape. The straight single tubes 9 are mutually connected to form a substantially S-shape, and the -! 8
A single tube 10 having a circular cross section is provided at the end of one tube 8 on the side of the blow-off chamber 2. The branch duct 3 connects the single pipe 10 to the connection lower of the blowout chamber 2, and connects the main duct 1 side end to the outlet 5.
m, and are connected to the main duct 1 and the blowing chamber 2, respectively, and in this state, the single pipe 8 and the outlet 5, and the single pipe 10 and the connecting lower, each have a circular shape, Since the connection direction is not particularly limited, branch duct 3
As shown in FIG. 2, in order to make the overall length as short as possible, it is linear in plan view.

Now, to explain the connection structure between the curved pipe I8 and the single pipes 119 arranged in these bars, FIG. After inserting a predetermined length into the tube, caulking is applied, the curved tube 8 and the single tube 9 are fixed with screws, and duct tape (not shown) is wrapped around the tube to form an exposed structure. Further, the connecting portions between the curved pipe 8, the single pipe 10, and □ have a similar configuration.

Connection structure between the roughly curved pipe 8 and the circularly curved pipe 4, and the curved pipe 8
A single pipe 10 attached to the blowout chamber 2 and a single pipe 6 attached to the blowout chamber 2
Fig. 4 is a diagram showing the connection part, in which the flange member 11 is fixed to the ends of the pipes to be connected to each other with rivets 12, and the flange member 11 is fixed to the ends of the pipes to be connected to each other. The flange members 11 are fixed to each other with bolts φ nuts 14 with an asbestos packing 13 interposed therebetween.

Next, the procedure (method) for constructing the above structure will be explained. First, the main duct 1 and the blowout chamber 2 are each connected to the single pipe 4 and the single pipe 4. 6 and 6 respectively, the main duct 1 and the blowout chamber 2 are installed and fixed at the desired locations, and the other pair of pipes 8 and a single pipe with a slightly longer installation allowance are installed. 9 and a single tube 10 are prepared.

Incidentally, it goes without saying that the flange portion @-11 must be attached to the desired location. Of these, the branch duct 3 is temporarily assembled by fitting each snow 8 into both ends of the single pipe 119 and fitting the single pipe 10 into the end of one of the curved pipes 8, and the temporarily assembled branch. The duct 3 is placed between the main duct 1 and the blowing chamber 2 and temporarily attached. In this state, the curved pipe is 8.11! ! 9 and the single pipe 10 are rotatable with respect to each other, and by changing the fitted length of each, it is of course possible to change the total length of the branch duct 3. Therefore, as described above, the branch duct 3 - After temporarily attaching the main duct 111 -! The end of Sekiguchi 8 corresponds to the outlet 5,
In addition, the open end of the unit 110 corresponds to the connecting lower, and the branch duct 3 is connected to the flat 1Iii! as shown in FIG. The curved pipe 8, the single pipe 9, and the single pipe 10 are relatively rotated so that they are straight, and the fitting lengths of each are adjusted to determine the dimensions in the horizontal and vertical directions. In this case, since the open ends of the curved pipe 8 and the single pipe 10, the outlet port 5, and the connecting lower are circular, the directions in which they can be connected are not fixed, so the dimensions are determined as described above. Even if it is done, the curved pipe 8 and the outlet 5, and the single pipe 10 and the connecting lower part can be set to completely match each other (in other words, the dimensions can be freely determined. The bale, bent!8, which has been subjected to the process, and the single pipes 9 and 10 are fixed to each other, and the branch duct 3 is fixed to the outlet 5 and the connecting lower.

However, according to the duct connection structure described above, the outlet 5
Since the connecting lower and a part of the end of the branch duct 3 to be connected thereto are circular, the connecting direction of the branch duct 3 to the main duct 1 and the blowing chamber 2 is not constant, and the bent pipes 8 are not connected to each other. Since they are connected via pipe 9 and one bent pipe 8 is connected to the connecting lower via 11110, the temporary attachment can be later dimensioned in the horizontal and vertical directions as described above. , Therefore, even if the members constituting the branch duct 3 are unified and standardized for each part of the main duct 1 and the blow-off chamber 2, and manufactured in a factory,
It is possible to correct the dimensional errors of the product and the relative position 11111 between the main duct 1 and the blow-out chamber 2 when assembling the branch duct 3, and to measure the dimensions at the assembly site and install the branch duct 3 individually. Since there is no need for production, the work of connecting the main duct 1 and the blowing chamber 2 can be simplified.

In addition, in the above-mentioned continuous structure, since the branch duct 3 can be made straight in plan view, the overall length of the branch duct 3 is shorter than before, and there are fewer bent parts, so the pressure loss can be reduced accordingly. be able to.

Although the above embodiment describes the case where the blow-off chamber 2 is connected to the main duct 1, the present invention is not limited to the above-mentioned embodiment, and may be connected to a connection port of an appropriate device other than the blow-off chamber. It can also be applied when connecting the main duct and the main duct. Further, in the above embodiment, the single pipe 10 is connected to the open end of the curved pipe 8 on the blowing chamber 2 side, and the vertical dimension is determined by this single pipe 10. Alternatively, a single pipe may be provided at the open end of the curved pipe 8 on the main duct 1 side, or each Okalo end &: I11 pipe may be provided on the main duct 1 side and the blowing chamber 2 side.

As is clear from the above description, according to the duct connection structure of the present invention, the branch duct that connects the connection port of a blowout chamber or the like having a blowout port to the main duct has a circular cross section and a substantially quarter arc shape. a pair of curved pipes; a straight single pipe with a circular cross section provided between the two to connect them to each other;
A second straight pipe with a circular cross section is connected to one of the curved pipes in order to connect to the connection port or the outlet of the main duct. Therefore, even if parts such as curved pipes that make up branch ducts are standardized and manufactured in a factory, there will be dimensional errors in the product and the relative relationship between the main duct and the connection port. Positional errors can sometimes be corrected when assembling branch ducts, and together with eliminating the need to produce branch ducts individually by taking measurements at the assembly site, connection work can be simplified. . Furthermore, since the connection direction of the branch ducts to the main duct and the connection port is not fixed, the main duct and the connection port can be connected over as short a distance as possible, and therefore the branch ducts can be made as short as possible. At the same time, there are fewer bends and no need for flexible ducts, so the number of materials and parts is reduced, resulting in lower costs.
At the same time, pressure loss can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2m is a plan view thereof, Fig. 3 is an exploded partial view of part m in Fig. 1, and Fig. 4 shows 1vat+ in Fig. 1. FIG. 1... Main duct, 2... Blowout chamber, 3... Branch duct. 5... Outlet, 7... Connection 0.8... Bent pipe, 9.
10--Single tube. Applicant Toyota Motor Corporation Representative Patent Attorney Yutaka 1) Hisashi Take (and 1 other person) 534-

Claims (1)

[Claims] The branch duct for connecting the 111 ports placed one inch away from the main duct has a partially circular shape and is approximately 1/4
A pair of arc-shaped snow pipes, a newly opened circular straight single pipe installed between these curved pipes to connect them, and a pipe to be connected to the above-mentioned Ii outlet or outlet of the main duct. Above-
A duct connection structure comprising a straight second single pipe connected to one side of the snow.