JPH07260224A - Ventilating duct system of multi-layer structure and ventilating duct - Google Patents

Abstract

PURPOSE:To gather ducts between respective ventilating places and an external ventilating port into one series and contrive the reduction of winding parts of incombustible material around venting routes from places wherein fire is used by employing a duct partitioned into a multude of layers. CONSTITUTION:A kitchen 20 is connected to a single tube duct connecting port, projected from the side surface of a multi-layer coupling 2 through a range hood 24 or a single tube duct 3 while a toilet 21, a lavatory 22 and a unit bath 23 are connected to the single tube duct connecting port of the multi- layer coupling 2 through a ceiling fan 25, an intermediate duct fan 27 and single- tube ducts 14, 5. Then, one end of the multi-layer duct 1 is connected to the multi-layer duct connecting port of the multi-layer coupling 2 and the other end of the same is connected to a ventilating port 6 whereby respective ventilating places are communicated with outside air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system and a ventilation duct for ventilation equipment used in apartments and the like. The ventilation path from the place of use is covered with the ventilation path of other places.

[0002]

2. Description of the Related Art Conventionally, in places such as kitchens, toilets, washrooms, and unit baths where fires are used and where odors and moisture are contained, the air in those places does not spread to other rooms. In addition, an exhaust fan is installed in the duct to forcibly exhaust the air to the outside and to naturally inhale from the opening for ventilation. That is, as shown in FIG. 5, a kitchen 64 is provided with a range hood 50 having a built-in range hood fan, and is connected via a duct 51 to an external ventilation port 52 provided on a wall surface 68 of the balcony to provide the range hood 50.
The air around the range hood 50 is sucked into the duct 51 by the internal fan and is exhausted from the external ventilation port 52. A non-combustible material such as rock wool 69 is wound around the duct 51 provided between the range hood 50 and the ventilation opening 52 provided in the kitchen 64 that uses fire to secure a distance from the combustible material. Since the duct has to be thicker and the duct space needs to be wider accordingly, the pipe path portion is lowered to form the ceiling 70.

For ventilation in a place other than the kitchen 64, a fan 53 is provided on the ceiling of a toilet 65 and is connected to a two-layer pipe joint 55 via a duct 54. An intermediate duct fan 56 for ventilating the washroom 66 and the unit bath 67 is provided on the ceiling of the unit bath 67. The intermediate duct fan 56 includes a washroom 66 and a unit bath 6
7 are connected to each other through the ducts 59 and 60, and the intermediate duct fan 56 is connected to the duct 6
The ducts for ventilation of toilets, washrooms, and unit baths are combined into one system by being connected to the joint 55 for two-layer pipes via 1. The two-layer pipe joint 55 is connected to the outside ventilation port 63 via the two-layer pipe 62, and rock wool is wound between the outside ventilation port 63 of the two-layer pipe 62 and a little inside to prevent dew condensation. is doing. In this case also, depending on the thickness of the double-layered pipe 62, it is necessary to lower the pipe path portion to form the ceiling. There are two-layer pipes in which a partition plate is provided in the longitudinal direction in a spiral duct or a vinyl chloride duct, and in which a pipe with a small diameter is provided in the duct.

In this way, there are two ventilation ducts for kitchens that use fire and other ventilation ducts for toilets and washrooms.
In addition to the ventilation of multiple ventilation points divided into systems, there is a one-to-one correspondence between multiple ventilation points such as kitchen, toilet, washroom, unit bath, etc. and multiple ventilation openings provided outside. In addition, a method is also implemented in which ventilation ducts are provided independently at each ventilation location.

[0005]

However, in the ducting method for ducts of two or more systems as described above, when a descending ceiling has to be provided, a plurality of descending ceiling portions are provided and the habitability is impaired. There's a problem.
In addition, since the duct between the kitchen that uses fire and the ventilation port needs to be wrapped with non-combustible material such as rock wool over its entire length, a ventilation path was provided separately from other ventilation paths. Further, since the duct becomes thicker by winding the non-combustible material, it is necessary to lower the piping route to make the ceiling, which is costly.

Therefore, in the multi-layered ventilation duct system and ventilation duct of the present invention, a duct partitioned from multiple layers is used, and ducts from a plurality of ventilation points are integrated into one system to reduce the total volume of the duct space. Aim to reduce.
Another object of the present invention is to reduce the winding portion of the non-combustible material by covering the periphery of the ventilation passage from the place where the fire is used with the ventilation passages from other ventilation places. Another object of the present invention is to provide a ventilation duct in which the ducts are integrated into one system and the periphery of the ventilation path from the place where fire is used can be covered with the ventilation paths from other ventilation locations.

[0007]

A multi-layered ventilation duct system and a ventilation duct of the present invention solve the above-mentioned problems, and duct a plurality of ventilation points such as a kitchen and a washroom in a building and an external ventilation port. It is a ventilation duct system that exhausts air by connecting with an inner pipe inside the outer pipe, and a partition plate is arranged in the longitudinal direction in the space between the outer pipe and the inner pipe so A multi-layer duct having a duct is formed, a plurality of ducts at one end of the multi-layer duct are connected to an external ventilation port, and a partition plate is arranged in a longitudinal direction in a space between the outer pipe and the inner pipe to form the multi-layer duct. A multi-layer duct joint having a plurality of ducts communicating with each duct duct is formed, and each duct at the other end of the multi-layer duct is provided with a single duct duct from a plurality of ventilation points via the multi-layer duct joint. Connect and connect single ducts from multiple ventilation points to one multi-layer duct It was to be able to put together. In addition, among multiple single ducts, the single duct from the place where fire is used is connected to the joint and the inner pipe of the multi-layer duct so that the circumference of the inner pipe is covered with the outer pipe and the air layer. It was made possible to reduce the total amount of non-combustible material wound around the ventilation duct from the place where fire is used.
In order to carry out the above method, an inner pipe is provided inside the outer pipe, and the space between the outer pipe and the inner pipe is partitioned by a partition plate in the longitudinal direction into a plurality of ducts. A multi-layered joint having a plurality of pipelines communicating with each pipeline and having a plurality of single-pipe connection ports respectively communicating with the pipelines on the side opposite to the connection side of the multilayer duct is used for a ventilation duct.

[0008]

The multi-layered ventilation duct system and the ventilation duct of the present invention have a multi-layered duct in which an inner tube is arranged in an outer tube and a partition in the longitudinal direction is provided in the space between the outer tube and the inner tube. Ventilation of a room is performed by using a multi-layered joint that connects a single pipe duct from each ventilation place to the duct. The ventilation duct is connected to the connection port of the multi-layer joint by connecting a single-pipe duct with a fan at each ventilation location, connecting the multi-layer joint and the multi-layer duct, and externally ventilating the other end of the multi-layer duct. Make sure that each ventilation point communicates with the outside air by connecting to the mouth. Then, by operating the fan provided in the single-pipe duct, the air in the room is sucked into the duct and discharged from the ventilation port, and the inside of the room is placed in a negative pressure state, so that the air is naturally sucked from the opening. Ventilation is performed. Also, by connecting the single pipe duct from the place where fire is used to the single pipe duct connection port that connects to the multi-layer duct and the inner pipe of the multi-layer joint to make one system, The outer pipe located on the outer periphery and the exhaust pipe from the place where the fire is used are covered with the incombustible material by the air layer flowing between the inner pipe and the outer pipe, so that the range in which the incombustible material is wound can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-layered ventilation duct system and a ventilation duct according to the present invention will be described with reference to FIGS. The ventilation duct system that exhausts contaminated air and odors from multiple ventilation areas such as kitchens and washrooms in apartments is a single pipe from each ventilation area of kitchen 20, toilet 21, washroom 22 and unit bath 23. The ducts 3, 4, 5 are connected to the multilayer joint 2,
One end of the multilayer duct 1 is connected to the multilayer joint 2, and the other end of the multilayer duct 1 is connected to the external ventilation port 6,
Each ventilation area communicates with the outside air. The multi-layer duct 1
For example, an inner pipe 11 having a diameter smaller than that of the outer pipe 10 is concentrically arranged inside the outer pipe 10 having a cylindrical shape.
By providing partition plates 12 and 13 in the longitudinal direction in the space between 1,
The space sandwiched between the outer pipe 10 and the inner pipe 11 is divided into two in the longitudinal direction, and a plurality of ventilation paths are provided in the outer pipe 10.

The multi-layered joint 2 for connecting the multi-layered duct 1 and the single-piped ducts 3, 4 and 5 has the same diameter as the inner pipe 11 of the multi-layered duct 1 in the outer pipe 15 having the same diameter as the outer pipe 10 of the multi-layered duct 1. The inner tube 16 of is arranged. The inner pipe 16 is bent into an L-shaped cross section inside the outer pipe 15, one end thereof is arranged near the connection port 15a of the multi-layer duct 1 of the outer pipe 15, and the other end is provided on a side surface of the outer pipe 15. Outer tube 1 through hole 15b
5 is projected to the outside of the range hood 2
A connection port 16a of the single pipe duct 3 from 4 is provided. Further, a hole 15c having a slightly smaller diameter than the hole 15b is formed on the side surface of the outer tube 15 opposite to the hole 15b,
The hole 15c is provided with a connection port 17 for the single pipe duct 5 which is a ventilation path from the washroom 22 and the unit bath 23, and an opening 15d on the side opposite to the connection portion of the outer pipe 15 with the multilayer duct 1. And the connection port 18a of the single pipe duct 4
A round plate 18 formed with is attached.

A partition plate 19 is provided inside the outer pipe 15 to divide the space between the outer pipe 15 and the inner pipe 16 in the longitudinal direction. The inner end of the partition plate 19 is connected to the connection port 17 and the connection port 18a. The inner pipe 16 of the partition plate 19 is in close contact with the outer periphery of the inner pipe 16 while being bent so as to partition the space, and the end portion is formed in a semicircular cross-section and is in close contact with the inner periphery of the outer pipe 15. It is cut out like. The outer end of the partition plate 19 which is divided into two parts when connected to the multi-layer duct 1 is connected to the partition plates 12 and 13 in the outer tube 10 of the multi-layer duct 1, respectively. The plurality of ventilation paths provided in the interior and the connection ports of the plurality of single pipe ducts provided in the multilayer joint 2 are connected to each other to form independent ventilation paths. The outer tube 10, the inner tube 11, the outer tube 15, and the inner tube 16 may have a cylindrical shape, a rectangular tube shape, or an oval cross section. As the duct, a stainless duct, an iron plate spiral duct, a mortar tube reinforced with glass fiber or the like can be used, and a mortar tube reinforced with glass fiber or the like is preferable in consideration of heat resistance.

When the ventilation duct is piped by using the multilayer duct 1 or the multilayer joint 2, the multilayer duct 1 is arranged in a portion of the ceiling 30 provided in the room, and ventilation is provided at one end on the outer wall W. It is connected to the port 6 and the other end is connected to the multilayer duct connection port 15a of the multilayer joint 2 provided on the ceiling.
Further, the kitchen 20 is provided with a range hood 24 having a built-in range fan (not shown), and the range hood 24 projects from the side surface of the outer tube 15 of the multilayer joint 2 through the single tube duct 3. The kitchen 20 is connected to the connection port 16a of the duct, and the kitchen 20 includes the range hood 24, the single pipe duct 3, the inner pipe 16,
It communicates with the outside air through the inner pipe 11 and the ventilation port 6. In addition,
For heat insulation of the single duct 3, for example, rock wool 3
Although a non-combustible material such as a is wound, since the ventilation from the kitchen is covered by the outer pipes 10 and 15 and the air layer in the space sandwiched between the outer pipe and the inner pipe in the multilayer duct 1 portion, If the duct is formed of a heat-resistant material and meets fire-fighting standards, the winding of non-combustible material can be omitted, and the installation cost can be reduced.

A ceiling fan 25 is provided on the ceiling of the toilet 21, and the ceiling fan 25 is connected to the connection port 18a of the multi-layer joint 2 via the single-pipe duct 4, and the toilet 21 has the ceiling fan 25. Connection port 18a, partition plate 19, partition plates 12, 13
It is communicated to the outside air through a ventilation path on one side of the space between the outer tube and the inner tube, which is partitioned by. In addition, an intake port 26 is provided in each of the washroom 22 and the ceiling of the unit bath 23, and the two intake ports 26 are the single ducts 5a and 5b, respectively.
Is connected to the intermediate duct fan 27 provided on the ceiling of the unit bath 23 via the single duct duct 5, and the intermediate duct fan 27 is connected to the connection port 17 of the multilayer joint 2 via the single pipe duct 5, and the washroom 22 and the unit. The bus 23 communicates with the outside air via a ventilation path on the opposite side of the ventilation path of the toilet 21 in the space between the outer tube and the inner tube. In addition, a connecting portion such as each duct is sealed with a sealing material or the like so that air does not leak. In addition, the intermediate duct fan 27 includes a parent and child fan and 2
A directional suction fan can be used.

In addition to the above-mentioned embodiment, the multilayer joint is shown in FIG.
As shown in, depending on the piping of the single pipe duct, the outer pipe 15
Connection ports 17 ', 18' of the single pipe ducts 4, 5 from places such as toilets, washrooms, and unit baths may be provided side by side on the side of the outer pipe 15, or a straight inner pipe 16 may be provided inside the outer pipe 15. ′ May be arranged, and the connection ports 17 ″, 18 ″ of the single pipe ducts 4 and 5 from a place such as a toilet, a washroom or a unit bath may be provided at a target position on the side surface of the outer pipe 15. In this case, a partition plate 19 'which is straight in the longitudinal direction of the outer pipe 15 is provided above and below the inner pipe 16'.

[0015]

EFFECTS OF THE INVENTION The multi-layered ventilation duct system and the ventilation duct of the present invention can be combined into a single ventilation system by using a multi-layered ventilation system. It is possible to reduce the number of places where the ceiling is provided. In addition, the ventilation path of the system that uses fire passes through the inner pipe of the multi-layer duct, and the ventilation path is integrated into one system, making it unnecessary to wrap the non-combustible material in the multi-layer duct part of the entire length. ,
It is economical because it can reduce the installation cost.

[Brief description of drawings]

FIG. 1 is a piping explanatory view showing an embodiment of a ventilation duct system having a multilayer structure of the present invention.

FIG. 2 is a perspective view (a) showing a multi-layer duct and a front view (b).

FIG. 3 is a perspective view showing a multilayer joint, and FIG.
It is an A sectional view (b).

FIG. 4 is a plan view (a) showing an example where a connection port for a single pipe duct is provided on a side surface of a multilayer joint, and a plan view (b) showing an example where a straight inner pipe is used. is there.

FIG. 5 is an explanatory view of piping showing a conventional example.

[Explanation of symbols]

 1 Multi-layer duct 2 Multi-layer joint 6 Ventilation port 10 Outer pipe 11 Inner pipe

Claims (3)

[Claims] 1. A ventilation duct system for exhausting air by connecting a plurality of ventilation points such as a kitchen and a washroom in a building with an external ventilation port by a duct, and providing an inner tube inside the outer tube, A partition plate is arranged in the longitudinal direction in the space between the outer pipe and the inner pipe to form a multi-layer duct having a plurality of pipe lines in the outer pipe,
Connect multiple conduits at one end of the multi-layer duct to the external ventilation port,
A partition plate is arranged in the longitudinal direction in the space between the outer pipe and the inner pipe to form a multi-layer duct joint having a plurality of pipe lines communicating with each pipe line of the multi-layer duct, and the other end of the multi-layer duct. A ventilation duct system with a multi-layer structure characterized in that each duct is connected with a single duct from a plurality of ventilation points via a multi-layer duct joint. 2. The ventilation of a multi-layer structure according to claim 1, wherein, in the connection of the single-pipe duct, the single-pipe duct from a place where fire is used is connected to a joint and an inner pipe of the multi-layer duct. Duct method. 3. A multi-layer duct in which an inner pipe is provided inside the outer pipe, and a space between the outer pipe and the inner pipe is partitioned by a partition plate in the longitudinal direction to divide into a plurality of ducts, and each duct of the multi-layer duct. A ventilation duct comprising: a multi-layer joint having a plurality of conduits communicating with each other and having a plurality of single-pipe connection ports respectively communicating with the plurality of conduits on the side opposite to the connection side of the multi-layer duct.