JPH09268747A - Chimney device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device installed in a building having vibration isolation structure, which has excellent earthquake resistance and in which constitution is simplified. SOLUTION: A chimney device is constituted by connecting each chimney unit configuring a chimney mounted into a building by connecting members 15 arranged between each vertically adjacent slab structure 16, 17 through vibration isolators. The connecting member 15 has a cylindrical heat-insulating material cover 19 and expansible bellows 23, which have cylindrical configuration internally installed on the inside of the heat-insulating material cover 19 and in which inner and outer rings 21, 22,... are disposed on the curve sides of curve sections 20, 20,... respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chimney device formed by connecting chimney units constituting a chimney installed in a building with a seismic isolation structure, and more particularly to a chimney device having excellent vibration resistance. is there.

[0002]

2. Description of the Related Art Conventionally, as a chimney device provided in a building, a chimney device having various structures has been developed. For example,
2. Description of the Related Art There is known a chimney device having a structure in which upper and lower ends of adjacent chimney units forming a chimney are connected to each other. However, in such a chimney device, there is a drawback in that, during an earthquake, the vibration of the building resonates with the natural vibration of the chimney itself, and the connection part of the chimney unit is damaged.

In order to solve this drawback, for example, FIG.
And a chimney device for preventing damage to the connecting portion of the chimney unit as shown in FIG. 5 (Japanese Patent Publication No. 58-542).
30 publication). In the chimney device A, arms 3, 3, ... Are fixedly formed on the outer circumference of each chimney unit 2, 2, ... Having a square cross-sectional shape that constitutes the chimney body 1, and each slab structure 4 of a building is formed. Through hole 5 at the tip of each arm 3 on the upper surface of
The bolts 6 projecting through and are respectively fixed, and the coil springs 7 attached to the bolts 6 are compressed by the nuts 8 so that the adjacent upper and lower chimney units 2 and 2 are
The flexible joints are loosely attached to each other to cope with vibrations during an earthquake.

[0004]

However, in this chimney device A, it is essential that the arm 3 is fixed to the outer periphery of each chimney unit 2, and the through hole 5 is provided at the tip of the arm 3. It is necessary to provide. On the other hand, the through hole 5 of the arm 3
In order to cope with the above, it is an essential requirement to fix the bolt 6 to the upper surface of each slab structure 4, and moreover, since the coil spring 7 and the nut 8 are required, the number of parts is increased and the assembling work is complicated. There is a problem such as becoming.

The present invention was created in view of the above problems, and it is a main object of the present invention to provide a chimney device which is installed in a building having a seismic isolation structure, has excellent vibration resistance, and has a simplified structure. It is what

[0006]

In order to achieve such an object, the first invention of the present invention relates to a chimney device which is formed by connecting the respective chimney units constituting a chimney installed in a building. -Shaped heat insulating material cover, and is connected by a connecting member made of an expandable bellows, which is provided inside the tubular heat insulating material cover and has inner and outer rings respectively arranged on the curved side of each curved portion. It is a thing.

In a second aspect of the present invention, the heat insulating material cover is
Heat-resistant fibers such as silica-alumina series are continuously laminated,
A blanket-shaped molded body is used as a base material, a bulky glass fiber glass cloth is interposed therebetween, an elastic knitted wire mesh is applied to the outside, and both ends are joined. A third aspect of the invention is characterized in that the bellows is made of a cross member that has heat resistance and is impermeable to air, and a fourth aspect of the invention is that the inner and outer rings of the bellows are made of stainless steel. It is characterized by being made of metal.

[0008]

According to the first aspect of the present invention, since the connecting member includes the heat insulating material cover and the expandable bellows having inner and outer rings, the connecting member is excellent in vibration resistance and is connected to each chimney structure. It is possible to prevent damage to parts.

According to the second invention, the heat resistance is excellent and the third
In combination with the invention of the above, excellent sealing property, heat resistance and strength,
It is possible to prevent leakage of exhaust gas. According to the fourth aspect of the invention, the inner and outer rings are made of metal such as stainless steel, so that the flexibility of the bellows in the lateral direction is improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a chimney device according to the present invention will be described below. FIG. 1 is a vertical sectional view of a chimney device according to the present invention, FIG. 2 is an enlarged view for explaining a heat insulating material cover, and FIG.
FIG. 4 is an enlarged view for explaining a bellows.

The chimney device B according to the present invention is a slab structure 16, 1 in which each chimney unit constituting a chimney installed in a building is vertically adjacent to a seismic isolation device (not shown).
In the space 18 between the seven, the structure is such that they are connected by a connecting member 15, and the connecting member 15 is a tubular heat insulating material cover 19.
And a cylindrical configuration arranged inside the heat insulating material cover 19,
In addition, the inner ring 21, on the curved side of each curved portion 20, 20, ...
21, and a bellows 23 having an expandable and contractible bellows provided with outer rings 22, 22 ,.
The bellows 23 may be composed of one sheet, but as shown in the figure, a plurality of bellows may be formed continuously by a sewing machine 24 or the like.

Next, an example of a method of installing the heat insulating material cover 19 and the bellows 23 which constitute the connecting member 15 will be described. Annular flanges 32 and 33 are fixed to the lower edge portions of the openings 30 and 31 of the upper and lower slab structures 16 and 17, respectively. The annular flanges 32 and 33 are provided with a bent portion 34 having a U-shaped cross section, and upper and lower end portions of the bellows 23 are held at the outer ends of the bent portion 34 with pressing plates 35 and 36 interposed therebetween, and a bolt 37. And the nut 38. Also, the insulation cover 19
Align the upper and lower ends with the pressing plates 35 and 36, and
Attach via 9, 40. Then, on the upper and lower annular flanges 32 and 33, silica-alumina-based heat-resistant fibers are continuously laminated via a bent portion 34, formed into a blanket shape, and then a needle punched blanket (Nichias Corporation). The product name "FINEFLEX BLANKET") is covered with a glass cloth using bulky glass fiber (product name "Insartex Cloth" manufactured by Nichias Co., Ltd.). The pressing plates 35 and 36 may have a one-piece construction or a plurality of divided constructions.

The heat insulating material cover 19 is constructed to have heat resistance. For example, silica alumina-based heat resistant fibers are continuously laminated and formed into a blanket shape, and then a blanket 45 is needle punched (Nichias Corporation). Made with a product name "FINEFLEX BLANKET" made as a base material, and a glass cloth 46 (product name "Insultex cloth" made by Nichias Co., Ltd.) that uses bulky glass fibers is arranged on the base material to give elasticity to the outside The knitted and braided wire net 47 is provided so as to form a tubular shape, and both ends thereof are superposed and joined via a fastener 49.

The bellows 23 has heat resistance and strength,
And preferably composed of a non-breathable cross member,
As an example, using aluminum-drawn glass cloth 53 as a base material,
An example is a structure in which aluminum vapor-deposited glass cloth is laminated via a PTFE sheet 54, and as described above, stainless steel inner and outer rings 21, 22, ... Are provided on the curved sides of the respective curved portions 20, 20 ,. .

The slab structure 1 above and below the seismic isolation device
The opening portions 30 of 6 and 17 are connected to the lining material 57 of the upper and lower chimney units via a corner cover 56 made of stainless steel.

In the chimney device B according to the present invention, each chimney unit constituting a chimney installed in a building is similarly divided into a cylindrical heat insulating material cover 19 and has a cylindrical structure and each curved portion. A bellows 23 having an expandable and contractible bellows structure, in which inner and outer rings 21 and 22 are respectively provided on the curved side of 20, is provided internally, and is connected by a connecting member 15 arranged for each slab structure 16, 17. Therefore, the connecting member 15 can cope with vertical vibrations due to the expansion and contraction action of the bellows 23, and can cope with lateral vibrations due to the flexible action of the bellows 23 and the inner and outer rings 21, 22. By the combination of the expansion and contraction action and the softening action, it is possible to deal with vibration accompanied by resonance.

[0017]

The chimney device according to the present invention having the above-described configuration is excellent in that it can cope with vibrations such as vertical vibrations, lateral vibrations, and resonances, and prevents damage to the connection portion of each chimney structure. It is earthquake resistant.

Further, the chimney device according to the present invention has a simplified structure in which it is roughly divided into a cylindrical heat insulating material cover and a bellows as a connecting member, can be provided at low cost, and its mounting work is simple. Furthermore, the insulation cover has excellent heat insulation,
Since the bellows is made of a cross member that has excellent heat resistance and strength and is impermeable to air, it is possible to prevent exhaust gas from leaking.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a chimney device according to the present invention.

FIG. 2 is an enlarged view for explaining a heat insulating material cover.

FIG. 3 is an enlarged view for explaining a bellows.

FIG. 4 is a longitudinal sectional view of a conventional example.

FIG. 5 is a vertical sectional view of the main part.

[Explanation of symbols]

 15 connection member 16,17 slab structure 19 heat insulating material cover 20 curved parts 21, 22 inner and outer rings 23 bellows

Claims (4)

[Claims] 1. A chimney device configured by connecting chimney units constituting a chimney to be installed in a building, wherein a cylindrical heat insulating material cover and a cylindrical and curved portion internally provided inside the heat insulating material cover. A chimney device, wherein the chimney device is connected by a connecting member made of an expandable bellows having inner and outer rings respectively arranged on the curved side of the. 2. A heat insulating material cover, wherein heat-resistant fibers such as silica-alumina-based material are continuously laminated and formed into a blanket shape, which is used as a base material, with a glass cloth of bulky glass fibers interposed therebetween, and the outside. The chimney device according to claim 1, wherein the stretchable knitted wire mesh is applied to the both ends and the both ends are joined. 3. The chimney device according to claim 1, wherein the bellows is made of a cross member having heat resistance and having no air permeability. 4. The chimney device according to claim 1, wherein the inner and outer rings of the bellows are made of metal such as stainless steel.