JPS6342283Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wall penetrating duct that is used in air conditioning equipment and that penetrates a wall to form an air passage.

The through-wall duct is attached to the wall after forming a through-hole with an inner diameter approximately 100 mm larger than the through-duct.

In other words, a cylindrical wooden frame with a diameter approximately 100 mm larger than the through-duct is attached to the wall through-hole, and boards are applied from both ends of the wall. Concrete is placed between these boards and between the outer periphery of the wooden frame and the inner periphery of the wall through-hole. to be poured. When the board and wooden frame are removed after the concrete has hardened, a concrete through hole that is about 100 mm larger than the outside diameter of the through duct will be formed, so insert the through duct into this through hole and connect the outer periphery of the through duct and the concrete through hole. Fill the space with mortar, noncombustible material, etc. and complete the work.

As described above, the conventional installation work of a through duct is extremely complicated work requiring a large number of construction steps, and when connecting a through duct to another duct, the length cannot be adjusted and centering is difficult. Also, the strength of the filled mortar is weaker than that of concrete.
The bond strength with concrete is also low. Furthermore, it is impossible to sufficiently fill the space between the duct outer circumference and the concrete wall with mortar, and if the wall has a fireproof structure, it is impossible to completely isolate the fireproof compartments.
Moreover, mortar material is easily destroyed when heated, and the insulation between fireproof compartments is broken.

Taking the above facts into consideration, the present invention is easy to install, allows for length adjustment when attached to other ducts, is easy to center, and can completely block off fire and smoke prevention compartments. The purpose is to obtain a wall penetrating duct.

The wall penetrating duct according to the present invention has one end attached to the inside of the body duct and a flange body provided at the other end of the bellows pipe, and this flange body is connected to the flange body of another duct, so that the body duct can be connected to the body duct. By attaching it to the wall using directly cast concrete, there is no need for a wooden frame, and the length can be adjusted and centered by bending the bellows pipe.

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

FIG. 1 shows a through duct 10 according to this embodiment, and a body duct 12 has a cylindrical shape with a rectangular cross section. The body duct 12 is not limited to a rectangular shape, and other shapes such as a circular shape may be used as necessary.

A pair of bellows pipes 14 and 16 are inserted from openings at both ends of the body duct 12. One ends of these bellows pipes 14 and 16 are each fixed near the center of the body duct 12, and flange bodies 18 and 20 are respectively fixed to the other ends.

These flange bodies 18, 20 are composed of a cylindrical portion having a short axial length and a flange portion fixed to one end of the cylindrical portion and extending in the radial direction.
As shown in FIG.
The other ends of the bellows pipes 14, 16 are connected to the cylindrical portions of the flange bodies 18, 20 and communicate with the flange bodies 18, 20.

The bellows pipes 14 and 16 are made of flexible materials such as rubber and synthetic resin, and are expandable and contractible.
When extended, the flange body 1
The attachment parts to the bellows parts 8 and 20 protrude to the outside of the body duct 12, and when contracted, a slight gap is formed between the outer periphery of the bellows part and the inner periphery of the body duct 12, as shown in FIG. It is becoming more and more common.

Next, the construction procedure for attaching the through duct 10 of this embodiment to the wall 32 will be explained with reference to FIGS. 2 and 3.

Reinforcing bars are assembled at the planned location for forming the wall, the through duct 10 is placed at the planned duct installation location, and it is fixed to the reinforcing bars with wires. In this case, fuselage duct 1
The axial length of 2 should be the same as the planned wall thickness.

Thereafter, boards are brought into contact with both sides of the reinforcing bars and both axial ends of the body duct 12, respectively. Therefore, the flange bodies 18, 20 are pressed against both ends of the body duct 12, as shown in FIG. Here, concrete is poured between these boards and around the outer periphery of the body duct 12 to form the wall 32. Once this concrete has hardened, the fuselage duct 12 can be reliably attached to the wall 32.

Since concrete is placed directly on the outer periphery of the body duct 12 in this way, it is not necessary to form a duct penetration hole in the wall where concrete is placed, as in the conventional case.
There is no need to pour or fill concrete, mortar, etc.

After the concrete hardens, the board is removed and the flange bodies 18, 20 are separated from the body duct 12 and connected to the flange parts 26, 28 of the other ducts 22, 24. Since it can be moved arbitrarily by bending 16, it is possible to adjust the length of the dust particles 22 and 24, and it is also easy to center the dust particles 22 and 24. Note that gaskets 38 are interposed between the flange bodies 18, 20 and the flange portions 26, 28, respectively, and are fastened with bolts 40 and nuts 42.

Although air from an air conditioning source (not shown) flows through the through duct 10 and ducts 22, 24 constructed in this way, the bellows pipes 14, 16 and the body duct 12 are securely fixed. Air cannot escape to the outside.

Furthermore, the concrete wall to which the body duct 12 is attached has greater strength than mortar according to the prior art, and there is no risk of it breaking even when heated. In addition, since there is no mortar filled part, the appearance is extremely natural.
It does not give any sense of discomfort and is aesthetically superior.
Furthermore, when the wall 32 is used as a fireproof wall, the fireproof compartments separated by the wall 32 can be completely isolated.

In addition, in the above embodiment, an example was explained in which a bellows pipe and a flange body were integrally provided corresponding to both ends of the body duct 12, but it is also possible to adopt a structure in which a bellows pipe and a flange body are attached only to one side of the body duct. can.

As explained above, the wall penetrating duct according to the present invention has one end inside the body duct and a flange body on the other end, so the number of construction steps is small, and the length can be adjusted when installing with other ducts, making it easy to center. It is easy to use and has an excellent effect of reliably blocking fire-proof compartments and smoke-proof compartments.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an embodiment of the wall penetrating duct according to the present invention, Fig. 2 is a sectional view showing how it is attached to a wall, and Fig. 3 is a sectional view showing how it is connected to another duct. It is a diagram. 10... Penetration duct, 12... Body duct, 1
4, 16... bellows pipe, 18, 20... flange body.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical body duct, a bellows pipe whose one end is attached to the inside of the body duct and whose other end can protrude from one side of the body duct when expanded, and other parts of the bellows pipe. A wall penetrating duct having a flange body attached to the end and used for connection to another fuselage duct. (2) Claim 1 of the above-mentioned utility model registration, characterized in that the bellows pipe and the flange body are provided in pairs, respectively, corresponding to both ends of the body duct.
Through-wall ducts as described in Section.