Building chimneys

Abstract

To prevent an intersection part between a transverse chimney part and a vertical chimney part from being damaged due to excessive stress when the vertical chimney part is made inclined due to an earthquake or the like, in a chimney for a building having the transverse chimney part.SOLUTION: A vertical chimney part 11 extending vertically and a transverse chimney part 13 intersect in a chimney 10 for a building. A displacement absorption part 20 that can be expanded, contracted, and deflected is provided at or near an intersection end part 13p of the transverse chimney part 13 with the vertical chimney part 11.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a chimney for a building attached to a building, and more particularly to a chimney for a building having a transverse chimney section supported on the building. [Background technology]

[0002] Generally, chimneys for releasing exhaust gases are installed inside or on the exterior walls of buildings that house boilers, generators, etc. This type of chimney is usually made up of multiple cylindrical chimney units. A flue is formed by lining up these chimney units in a vertical row (see Patent Document 1, etc.). Two adjacent chimney units above and below are not constrained to each other, and can follow the shaking of the building by causing inter-story deformation during an earthquake. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5798676 Summary of the Invention [Problem to be solved by the invention]

[0004] This type of building chimney usually extends vertically, but depending on the building's equipment and layout, it may be necessary to make part of the flue horizontal. In a chimney with such a horizontal chimney, if the vertical chimney section is tilted due to an earthquake or other event, the end of the horizontal chimney section opposite the intersection with the vertical chimney section may tend to lift up or tilt downward. This may cause excessive stress at the intersection, which may result in the intersection being destroyed. In view of the above circumstances, the present invention aims to prevent the intersection between the horizontal chimney section and the vertical chimney section of a building chimney having a horizontal chimney section from being destroyed by excessive stress when the vertical chimney section is tilted due to an earthquake or the like. [Means for solving the problem]

[0005] In order to solve the above problem, the present invention provides a chimney attached to a building, The chimney has a vertical chimney section that extends vertically and a horizontal chimney section that extends intersecting the vertical chimney section, and the horizontal chimney section is provided with a displacement absorbing section that is expandable, contractible, and flexible.

[0006] Preferably, the displacement absorbing portion is provided at an end of the transverse chimney portion that intersects with the vertical chimney portion or in the vicinity thereof.

[0007] Preferably, the chimney for a building has a first vertical chimney section extending vertically, a lateral chimney section extending intersecting with an upper end of the first vertical chimney section, and a second vertical chimney section extending upward from a second end of the lateral chimney section opposite to a first end intersecting with the first vertical chimney section, A displacement absorbing section that is expandable, contractible, and flexible is provided at or near at least one of the first end and the second end of the lateral chimney section. [Effects of the Invention]

[0008] According to the present invention, in a chimney for a building having a horizontal chimney section, even when the vertical chimney section is tilted due to an earthquake or the like, the horizontal chimney section can be kept horizontal, and the intersection between the horizontal chimney section and the vertical chimney section can be prevented from being destroyed by excessive stress. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a side view of a chimney for a building according to one embodiment of the present invention. [Figure 2] FIG. 2 shows a displacement absorbing portion of the chimney for a building, and is an enlarged cross-sectional view of a circle II in FIG. [Figure 3] Fig. 3(a) is a cross-sectional view of the displacement absorbing section in an elongated state, Fig. 3(b) is a cross-sectional view of the displacement absorbing section in a contracted state, and Fig. 3(c) is a cross-sectional view showing an example of the displacement absorbing section in a flexed state. [Figure 4]4(a) and 4(b) are side views showing an example of the state of the chimney for a building during an earthquake. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows a building 1 such as a high-rise building. The building 1 is equipped with a chimney 10 for discharging exhaust smoke from a boiler, a generator, etc. The chimney 10 has a flue and, in turn, a curved axial direction. Specifically, the chimney 10 for a building comprises a first vertical chimney section 11, a horizontal chimney section 13, and a second vertical chimney section 12. The first vertical chimney section 11 extends vertically from the lower floors of the building 1 to, for example, the rooftop or floor 2 nearby. The horizontal chimney section 13 is located on, for example, the rooftop or floor 2 nearby and extends horizontally. A first end 13p of the horizontal chimney section 13 intersects the first vertical chimney section 11 at a right angle. The second vertical chimney section 12 intersects a second end 13q of the horizontal chimney section 13 opposite the first end 13p at a right angle and rises vertically from there. A chimney opening 14 is provided at the top of the second vertical chimney section 12.

[0011] As shown in FIG. 1, each chimney section 11-13 includes a plurality of chimney units 19. Each chimney unit 19 is, for example, cylindrical with a square cross section. A flue is formed by lining up a plurality of chimney units 19 in a row in the chimney axial direction. Adjacent chimney units 19 are capable of inter-story deformation relative to each other. The load of each chimney unit 19 is applied to the skeleton of the building 1 via a support arm 15 or a hanging frame 16.

[0012] 1, a displacement absorbing section 20 is provided at or near at least one end 13p, 13q of the lateral chimney section 13. Here, a displacement absorbing section 20 is provided near each of both end portions 13p, 13q of the lateral chimney section 13. Of the chimney units 19, a displacement absorbing section 20 is interposed between two adjacent chimney units 19a, 19b of the lateral chimney section 13.

[0013] As shown in Figures 3 and 4, the displacement absorbing section 20 is expandable, contractible, and flexibly deformable. This allows the chimney units 19a, 19b on either side of the displacement absorbing section 20 to be displaced relative to each other, preferably three-dimensionally. Here, the flexural deformation preferably includes bending and torsion. The bending preferably includes bending in both the vertical and horizontal directions. That is, it includes vertical bending around a horizontal axis perpendicular to the axial direction of the transverse chimney section 13, and lateral bending around a vertical axis. The torsion refers to twisting around the axis of the transverse chimney section 13. The three-dimensional relative displacement preferably includes approaching, separating, axial misalignment, and angular misalignment between the chimney units 19a, 19b.

[0014] 2, the displacement absorbing section 20 includes a soft insulating layer 21, an outer cover 22, and two inner sleeves 23, and is formed in a roughly rectangular cylindrical or annular shape that matches the cross-sectional shape of the chimney unit 19. The soft insulating layer 21 is made of an insulating mat whose main material is a flexible insulating material such as a ceramic blanket.

[0015] The outer periphery of the soft heat insulating layer 21 is covered by an outer cover 22. The outer cover 22 has two bellows 22a and an intermediate cylindrical portion 22c. The bellows 22a are connected to the opposing ends of the chimney units 19a and 19b, respectively. As shown in FIG. 3, the bellows 22a are expandable (FIGS. 3(a) and 3(b)) and flexible (FIG. 3(c)). As shown in FIG. 2, the intermediate cylindrical portion 22c spans between the two bellows 22a.

[0016] Two inner sleeves 23 are provided on the inner periphery of the soft insulation layer 21, spaced apart from each other in the axial direction of the transverse chimney section 13. The corresponding inner sleeves 23 are connected to the opposing ends of the chimney units 19a, 19b. The opposing ends of the two inner sleeves 23 are spaced apart from each other, allowing the bellows 22a to expand and contract and flex.

[0017] A locking pin 24 is provided on the base end side of each inner sleeve 23 (the portion close to the corresponding chimney unit 19a, 19b). The locking pin 24 penetrates into the soft insulation layer 21, thereby locking it to the soft insulation layer 21. As a result, both ends of the soft insulation layer 21 are restrained to the corresponding chimney units 19a, 19b via the locking pin 24 and the inner sleeve 23. Therefore, the soft insulation layer 21 is designed to deform in accordance with the relative displacement between the chimney units 19a, 19b. Although Figure 2 shows the displacement absorbing section 20 on the first end 13p side, the displacement absorbing section 20 on the second end 13q side also has the same structure as the displacement absorbing section 20 on the first end 13p side.

[0018] As shown in FIGS. 4(a) and 4(b), when the first vertical chimney section 11 tilts due to an earthquake or other event, the displacement absorbing section 20 on the first end 13p side of the horizontal chimney section 13 expands, contracts, and flexes to absorb the tilt displacement of the first vertical chimney section 11. The displacement absorbing section 20 is capable of bending and twisting in both the vertical and horizontal directions, and can also absorb the tilt displacement of the vertical chimney section 11 in any direction. This allows the horizontal chimney section 13 to maintain a horizontal position, preventing the second end 13q (FIG. 1) side of the horizontal chimney section 13 from lifting up or tilting downward. This prevents excessive stress from being generated in the first end 13p of the horizontal chimney section 13 (the intersection with the first vertical chimney section 11) and prevents damage to the first end 13p. Although not shown in the figure, when the second vertical chimney section 13 is tilted, the displacement absorbing section 20 on the second end 13q side of the horizontal chimney section 13 expands and contracts or bends, thereby preventing excessive stress from occurring at the second end 13q (the intersection with the second vertical chimney section 12) of the horizontal chimney section 13 and preventing damage to the second end 13q. This allows the building chimney 10 having the horizontal chimney section 13 to have improved vibration resistance.

[0019] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, the extension direction of the horizontal chimney section 13 need only intersect with the vertical, and is not limited to being horizontal, but may also be oblique. The angle (interior angle) between the vertical chimney section and the horizontal chimney section is not limited to being a right angle, but may also be an obtuse angle. The second vertical chimney portion 12 may be omitted. [Industrial Applicability]

[0020] The present invention can be applied to chimneys installed inside or along the exterior walls of buildings, for example. [Explanation of symbols]

[0021] 1. Building 2. Rooftop or nearby floors 10 Building chimneys 11 First vertical chimney section 12 Second vertical chimney section 13 Transverse chimney section 13p First end (intersection of first vertical chimney section and horizontal chimney section) 13q Second end (intersection of second vertical chimney section and horizontal chimney section) 14 Chimney outlet 15 Support Arm 16 Hanging Frame 19, 19a, 19b Chimney unit 20 Displacement absorbing section 21 Soft insulation layer 22 Outer cover 22a Bellows 22c Intermediate cylinder part 23 Inner sleeve 24 Locking pin

Claims

1. A chimney for a building attached to a building, A chimney for a building having a vertical chimney section extending vertically and a horizontal chimney section extending intersecting the vertical chimney section, wherein a displacement absorbing section is provided in a portion of the extending direction of the horizontal chimney section, and wherein when the end of the horizontal chimney section intersecting with the vertical chimney section and the vertical chimney section tilt together while maintaining an intersection angle, the displacement absorbing section is capable of expanding and contracting and flexing so that the part of the horizontal chimney section opposite the end that is not a displacement absorbing section remains horizontal.

2. 2. The chimney for a building according to claim 1, wherein the displacement absorbing portion is provided in the vicinity of the end of the transverse chimney portion.

3. A chimney for a building attached to a building, The chimney has a first vertical chimney section extending vertically, a lateral chimney section extending and intersecting with an upper end of the first vertical chimney section, and a second vertical chimney section extending upward from a second end of the lateral chimney section opposite to a first end intersecting with the first vertical chimney section, A chimney for a building characterized in that a displacement absorbing section is provided in the vicinity of at least one of the first end and the second end of the horizontal chimney section, and when the one end of the horizontal chimney section and the vertical chimney section tilt together while maintaining an intersection angle, the displacement absorbing section is capable of expanding and contracting and flexing so that the part of the horizontal chimney section on the opposite side of the one end, which is not a displacement absorbing section, remains horizontal.

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