JPS6128947Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to ventilation pipes for buildings, particularly apartment buildings.

Conventionally, synthetic resin pipes or metal pipes have been used as ventilation pipes in buildings, but synthetic resin pipes have the drawback of emitting toxic gases that can lead to loss of life, and metal pipes can heat the room where a fire has occurred to 1000°C. In this case, the metal pipes that penetrated the floor or walls conducted heat to the adjacent rooms above, below, or to the side of the fire at temperatures of 4,000 to 600°C, which caused the fire to spread.

The fire-resistant tubular structure of the present invention uses hollow tubes made of non-metallic inorganic materials, so even if the temperature of the fire room rises to 1000℃, the temperature at which heat is transferred to the adjacent room through the floor or wall will be the wood flash point. The temperature does not reach 260℃, but stays around 120-130℃. Therefore, the purpose of the present invention is to prevent the spread of fire and to protect human life.

For this purpose, the present invention provides a partition plate inside a hollow tube made of a non-metallic inorganic material over its entire length in the axial direction, and creates a plurality of passages in the axial direction that are each independently partitioned by the partition plate. to form,
The present invention provides a fire-resistant tubular structure whose passages are covered with a water-impermeable thin film, thereby improving economic efficiency, moisture resistance, and workability.

Next, the present invention will be explained based on the drawings.

1 and 2 show a cross section of the refractory tubular structure of the present invention, and FIG. 3 shows a side view of the refractory tubular structure. FIG. 4 shows an example of a pipe joint.

In FIGS. 1 and 2, reference numeral 1 denotes a hollow tube made of a nonmetallic inorganic material, such as glass fiber reinforced cement, asbestos cement, or gypsum.

Reference numeral 2 denotes a partition plate made of a non-metallic inorganic material, which is integrally extruded in the axial direction inside the hollow tube. Note that the hollow tube and the partition plate may be formed separately and then integrated using an adhesive or the like. 3 is about 0.5 mm by spraying, brushing, etc. on the inner peripheral surface of the hollow tube made of non-metallic inorganic material and the outer peripheral surface of the partition plate.
It is a thin film of water-impermeable synthetic resin coated to a thickness of .

The thickness of this thin film may be 0.2 to 0.3 mm and can be adjusted as necessary.

Also, instead of coating, a pre-formed thin film can be applied.

In FIG. 1, numeral 4 is a passage for deodorizing the toilet, for example, and numeral 5 is an exhaust passage for the kitchen and bathroom, for example.

In this invention, the odor from the toilet and the exhaust air from the kitchen and bathroom are ventilated separately through the partition plate inside the fireproof tubular structure, so there is no problem of the two types of air mixing or flowing back. .

Furthermore, since the fireproof tubular structure of the present invention is made of non-metallic and inorganic materials, it can withstand fire, and even if the impermeable thin film were to burn, toxic gases would be exhausted to the outside of the building through the fireproof tubular structure. , has the effect of guaranteeing the safety of human life from toxic gases.

Also, the fire will not spread through the pipe.

According to the present invention, it is possible to easily coat the inner surfaces of a hollow tube made of a nonmetallic inorganic material and a partition plate with a water-impermeable thin film such as a synthetic resin, and to manufacture a fireproof tubular structure at a low cost.

In addition, pipes made of non-metallic inorganic materials have the disadvantage that steam from the bathroom or steam from the kitchen penetrates through their wall thickness over a long period of time, causing water droplets to fall, but the present invention has the effect of preventing this.

Furthermore, since one pipe can perform two or more types of ventilation, compared to the conventional method of using multiple pipes separately, less space is required between the pipes, and the labor required for construction is reduced. It can be economical.

Although the present invention has been described with respect to a ventilation pipe, it is of course applicable to drainage pipes for rainwater, gray water, sewage, etc.

Furthermore, although the present invention has been described for the case where there are two passages, the present invention can be similarly applied to a fireproof tubular structure having three or more passages.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of the refractory tubular structure of the present invention, and FIG. 3 is a side view thereof. FIG. 4 is a longitudinal sectional view of the pipe joint. 1... Hollow tube made of non-metallic inorganic material, 2... Partition plate made of non-metallic inorganic material, 3... Water-impermeable thin film, 4
...Aisle, 5...Aisle.

Claims (1)

[Scope of utility model registration request] A plate made of a nonmetallic inorganic material is disposed inside the pipe made of a nonmetallic inorganic material as a partition plate along its entire length in the axial direction, and has a plurality of passages in the axial direction that are each independently partitioned by the partition plate. So,
A fireproof tubular structure whose passages are covered with a water-impermeable thin film.