Building chimney

Abstract

To provide a building chimney, which is made up of a multi-stage chimney unit having a rectangular cylindrical shape, each of four sides is made of a separate outer surface plate, and which can adjust the height of a support receiving member to cope with manufacturing errors and construction errors of the chimney unit and can suppress an increase in the number of connecting bolts required.SOLUTION: A side edge 13e of one exterior plate 13 of each chimney unit 10 of a building chimney 3 is bent outward so as to be parallel to the other exterior plate 14, and a side edge 14e of the other exterior plate 14 is overlapped with the edge 13e, and these two edges 13e, 14e are overlapped and connected by a connecting bolt 16. A support receiving member 21 of a support structure 10 that supports each chimney unit 10 on a building frame 1a is separably provided on the respective exterior plate 13. The support receiving member 21 has a connecting seat 26 that is fitted to the edge 13e of the respective exterior plate 13. The connecting seat 26 is connected to the edges 13e, 14e by the connecting bolt 16A.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a chimney attached to a building, and particularly to a chimney for a building formed by stacking a plurality of chimney units having a square tube shape vertically.

Background Art

[0002] For example, Patent Document 1 discloses a chimney for a building for discharging flue gas from a boiler or a generator installed in a building. The chimney for a building includes a plurality of chimney units having a square tube shape. These chimney units are vertically stacked in a chimney through-hole provided in the building. Support receiving members are provided on the outer surfaces of each chimney unit. A support base is provided on the building body so as to face the chimney through-hole. The support receiving members are placed on and connected to the support base. Thereby, the load of each chimney unit is transferred to the building body through the support receiving members and the support base.

[0003] In the chimney for a building of Patent Document 2, the four wall portions of the chimney unit having a square tube shape are each composed of a plate-shaped heat insulating panel and an outer plate made of a steel plate provided on the outer surface thereof. Of the two outer plates of the chimney unit that intersect each other, the edge portion of one outer plate is bent outward at a right angle, and the bent edge portion and the edge portion of the other outer plate are overlapped, and these two edge portions are connected by a plurality of connecting bolts arranged at intervals in the vertical direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In this type of chimney for buildings, due to manufacturing errors or construction errors of the chimney unit, etc., the heights of the support base (support member) on the building body side and the support receiving member may not match. In this case, if the support receiving member is fixedly attached to the chimney unit by welding or the like so as not to be separable, it is difficult to adjust the height of the support receiving member. On the other hand, especially when connecting the support receiving member and the chimney unit by bolting in the chimney structure of Patent Document 2, if the number of connecting bolts increases too much, it becomes complicated. In view of such circumstances, an object of the present invention is to provide a chimney for a building composed of a plurality of chimney units having a square tubular shape with four sides each formed by a separate outer panel, in which the height of the support receiving member can be adjusted according to manufacturing errors or construction errors of the chimney units, and the number of required connecting bolts is suppressed from increasing.

Means for Solving the Problems

[0006] To solve the above problems, the present invention provides a chimney for a building in which a plurality of chimney units having a square tubular shape are vertically stacked, and each chimney unit is supported by a building body via a support structure. The chimney unit has four outer panels that are separate from each other and face in four directions. The edge of one of the two outer panels that intersect each other is bent outward so as to be parallel to the other outer panel, and the edge of the other outer panel is overlapped with the bent edge, and these two edges are connected by connecting bolts arranged at intervals in the vertical direction. The support structure includes a support receiving member that is separate from the chimney unit and is detachably provided on one or the other corresponding outer panel. The support receiving member has a connection seat that is applied to the edge of the corresponding outer panel, and the connection seat is connected to the two edges by the connecting bolts.

[0007] Preferably, the support receiving member includes a contact plate that is applied to the corresponding outer panel, and a support receiving plate that protrudes outward so as to intersect the contact plate and is connected to the support member on the building body side. The connection seat is formed at the end of the contact plate on the edge side of the corresponding outer panel.

[0008] Preferably, the contact plate is applied to the one outer panel, the end portion of the contact plate is bent outward to form the connecting seat, and the connecting seat is abutted against the bent edge portion.

[0009] Preferably, the contact plate is applied to the other outer panel, the end portion of the contact plate is applied to the edge portion of the other outer panel to form the connecting seat.

Advantages of the Invention

[0010] According to the present invention, the height of the support receiving member can be adjusted according to the manufacturing error and construction error of the chimney unit of the building chimney. In addition, an increase in the required number of connecting bolts can be suppressed.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

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Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. <First Embodiment (FIGS. 1 to 7)> As shown in FIG. 1(a), in the chimney opening 1c of a building 1 such as a high-rise building, a building chimney 3 for discharging the flue gas from the flue gas generating equipment 2 such as a boiler or a generator is provided. The building chimney 3 includes a plurality of chimney units 10 and a support structure 20 provided on each chimney unit 10. The plurality of chimney units 10 are vertically stacked. As shown in FIG. 1(b), each chimney unit 10 is supported by the building body 1a via the support structure 20.

[0013] As shown in FIG. 2, each chimney unit 10 has a square tube shape. The four wall portions 10a, 10b, 10c, 10d of the chimney unit 10 include plate-shaped heat insulation panels 11, inner panels 12, and outer panels 13, 14, respectively. The heat insulation panel 11 is made of a hard heat-resistant insulating material such as calcium silicate. A steel inner panel 12 is attached to the inner surface of the heat insulation panel 11. The inner panel 12 may be omitted. Steel outer panels 13, 14 are attached to the outer surface of the heat insulation panel 11.

[0014] As shown in FIG. 2, the outer surfaces of the two wall portions 10a, 10c facing each other in parallel in the chimney unit 10 are each constituted by an outer panel 13. The outer surfaces of the two wall portions 10b, 10d intersecting at right angles to these wall portions 10a, 10c are each constituted by an outer panel 14. Therefore, the chimney unit 10 has four outer panels 13, 14 facing in four directions. The four outer panels 13, 14 are separate from each other.

[0015] As shown in FIG. 6, among the two outer panels 13 and 14 of the chimney unit 10 that intersect at right angles to each other, the edge 13e of one outer panel 13 is bent outward at a right angle so as to be parallel to the other outer panel 14. The edges 13e and 14e of these outer panels 13 and 14 are overlapped with a heat-resistant packing 15 sandwiched therebetween and are connected by a plurality of connecting bolts 16. Insertion holes 17 for inserting the connecting bolts 16 are formed in the edges 13e, 14e and the heat-resistant packing 15. As shown in FIGS. 4 and 5, the insertion holes 17 and the connecting bolts 16 are arranged at regular pitches P 16 at intervals along the extending direction (vertical direction) of the edges 13e, 14e.

[0016] As shown in FIGS. 1(b) and 1(c), a support structure 20 is provided near the upper ends of the two parallel and opposing wall portions 10a and 10c of each chimney unit 10. The support structure 20 includes a support receiving member 21 (support receiving hardware) on the chimney unit 10 side and a pair of support members 30 (support hardware) on the building body 1a side.

[0017] As shown in FIG. 2, the support receiving member 21 is detachably provided on one of the outer panels 13, 14 (the corresponding outer panel) of the outer panels 13 and 14 and is separate from the chimney unit 10. Specifically, as shown in FIG. 3, the support receiving member 21 includes a contact plate 22, four (a plurality of) support receiving plates 23, and upper and lower plate members 24, 25. These contact plate 22, support receiving plates 23, and plate members 24, 25 are each constituted by a steel plate. The contact plate 22 is formed in a flat plate shape extending in the width direction of the outer panel 13 (the left-right direction in FIG. 5). As shown in FIG. 2, the contact plate 22 is detachably applied to the outer surface of the corresponding outer panel 13 (one outer panel).

[0018] As shown in FIGS. 3 and 5, two support receiving plates 23 are provided side by side on both sides in the width direction (left and right in FIG. 5) of the support receiving member 21. Each support receiving plate 23 is directed so as to be orthogonal (intersect) to the contact plate 22 and protrudes outward, and is abutted against the outer surface of the contact plate 22 and joined by welding.

[0019] An upper plate member 24 is horizontally bridged between upper ends of four (or a plurality of) support receiving plates 23. The upper ends of the support receiving plates 23 are abutted against the upper plate member 24 and joined by welding. An end portion of the upper plate member 24 facing the inside of the chimney is abutted against the outer surface of the contact plate 22 and joined by welding.

[0020] A lower plate member 25 is horizontally bridged between lower ends of four (or a plurality of) support receiving plates 23. The lower ends of the support receiving plates 23 are abutted against the lower plate member 25 and joined by welding. An end portion of the lower plate member 25 facing the inside of the chimney is abutted against the outer surface of the contact plate 22 and joined by welding.

[0021] As shown in FIGS. 3 and 5, the support receiving member 21 has a pair of connection seats 26 for being connected to the chimney unit 10. Specifically, both end portions of the contact plate 22 on both edge portions 13e sides of the outer panel 13 are bent outward respectively. The bent end portions constitute the connection seats 26. As shown in FIG. 4, the height dimension of the contact plate 22 and thus the height dimension H 26 of the connection seat 26 16 is preferably several times to about a dozen times, more preferably 4 to 6 times (H 26 = 4×P 16 ~ 6×P 16 ) of the arrangement pitch P of the connection bolts 16.

[0022] As shown in FIGS. 5 and 6, the connection seat 26 is adapted to be abutted against the bent edge portions 13e of the chimney unit 10. Among the connection bolts 16 of the chimney unit 10, the connection bolt 16A at the position exactly overlapping with the connection seat 26 penetrates through the connection seat 26 in addition to the two edge portions 13e, 14e.

[0023] As shown in FIGS. 4 and 5, a plurality of insertion holes 26b for the connecting bolts 16A are formed in the connecting seat 26 at intervals in the vertical direction. The number of the insertion holes 26b in the connecting seat 26 and thus the number of the connecting bolts 16A are preferably several to a dozen or so, more preferably about 4 to 6 (5 in the figure). By these connecting bolts 16A, the connecting seat 26 is connected to the two edge portions 13e, 14e of the chimney unit 10. Thereby, the support receiving member 21 is joined to the chimney unit 10 by the connecting bolts 16A.

[0024] As shown in FIGS. 3 and 5, an insertion recess 21c for the support member 30 is formed between the two support receiving plates 23 on both sides in the width direction (left and right in FIG. 5) of the support receiving member 21. A pair of support members 30 are provided in the portion of the building body 1a that defines the chimney opening 1c so as to respectively correspond to the insertion recess 21c.

[0025] As shown in FIGS. 4 and 5, each support member 30 is formed in a substantially box shape by combining a plurality of steel plates. The support member 30 is fixed to the building body 1a with fixing bolts 32 through the insertion holes 30b. Preferably, the support member 30 is position-adjustable in the front-rear direction (left and right in FIG. 4) with respect to the building body 1a. The insertion holes 30b may be elongated holes with the major axis directed in the front-rear direction (left and right in FIG. 4). The support member 30 projects from the building body 1a into the chimney opening 2 and is inserted into the insertion recess 21c. Thereby, the support member 30 is sandwiched between the two support receiving plates 23. The support receiving plates 23 and the side plates 31 of the support member 30 are connected by support receiving bolts 33. Insertion holes 23b, 42c for the support receiving bolts 33 are respectively formed in the support receiving plates 23 and the side plates 31 of the support member 30.

[0026] As shown in Fig. 4, one of the support receiving plate 23 and the support member 30, i.e., the member 30, is provided with a displacement compensation structure 40 for coping with the displacement between these support receiving members 21 and the support member 30. For example, as shown in Fig. 7(a), the displacement compensation structure 40 includes an eccentric outer cylinder 41 and an eccentric inner cylinder 42. The eccentric outer cylinder 41 has an eccentric outer eccentric hole 41c. The eccentric inner cylinder 42 is rotatably fitted in the outer eccentric hole 41c. The eccentric inner cylinder 42 has an eccentric inner eccentric hole 42c.

[0027] The support member 30 is formed with an oversized hole 43 having a diameter larger than that of the support receiving bolt 33 and substantially the same as the outer diameter of the eccentric outer cylinder 41. The eccentric outer cylinder 41 is rotatably fitted in the oversized hole 43.

[0028] As shown in Figs. 7(a) and 7(b), by adjusting the rotation angles of the eccentric outer cylinder 41 and the eccentric inner cylinder 42 respectively, the inner eccentric hole 42c is displaced in a vertical plane perpendicular to the axis of the oversized hole 43. Thereby, the inner eccentric hole 42c can be made to coincide with the insertion hole 21b.

[0029] As shown in Fig. 4, the support receiving bolt 33 is inserted through the insertion hole 21b and the inner eccentric hole 42c which are made to coincide with each other and tightened. Thereby, the support receiving member 21 and the support member 30 are connected. As shown in Figs. 4 and 7, the displaceable amount of the inner eccentric hole 42c in the vertical direction is the compensable amount Δ of the height displacement between the support receiving member 21 and the support member 30 by the displacement compensation structure 40. 40 becomes. Preferably, the compensable amount Δ 40 is about half (0.5×P 16 ≈Δ 16 ) or more than half (0.5×P 40 <Δ 16 <Δ 40 ) of the arrangement pitch P of the connecting bolts 16.

[0030] The chimney 3 for a building is constructed as follows. The chimney unit 10 is manufactured at a chimney manufacturing factory. When the edges 13e, 14e of each chimney unit 10 are connected by the connecting bolts 16, prior to the attachment of a predetermined connecting bolt 16A, the support receiving member 21 is applied to the outer panel 13 of the chimney unit 10. Then, the connecting seat 26 and the edges 13e, 14e are connected by the connecting bolt 16A. As a result, the support receiving member 21 is attached to each chimney unit 10.

[0031] Therefore, the connecting bolt 16 for connecting the edges 13e, 14e of each chimney unit 10 and the connecting bolt 16A for connecting the support receiving member 21 to the chimney unit 10 can be shared. As a result, the total number of required bolts in the building chimney 3 is reduced, and the total time required for bolt tightening can be shortened.

[0032] The chimney unit 10 manufactured in this way is carried into the construction site and stacked inside the chimney through-hole 1c. A support member 30 is installed in advance on the building frame 1a. Then, the support receiving member 21 of the chimney unit 10 is connected to the support member 30 by the support receiving bolts 33. As a result, the load of the chimney unit 10 is transferred to the building frame 1a via the support receiving member 21 and the support member 30 of the support structure 20.

[0033] As shown in Fig. 7(a), during the installation construction of the chimney unit 10, due to manufacturing errors, construction errors, etc. of the chimney unit 10, the support receiving member 21 may deviate from the designed height H 0 There may be a deviation. The support receiving member 21 deviates from the designed height H 0 by a deviation amount ΔH 1 If the deviation amount ΔH 40 is equal to or less than the deviation compensable amount Δ 1 (ΔH 40) It can be dealt with by the displacement compensation structure 40. Specifically, by adjusting the rotation angles of the eccentric outer cylinder 41 and the eccentric inner cylinder 42, the inner eccentric hole 42c is made to coincide with the insertion hole 21b. Depending on the position of the inner eccentric hole 42c, the support member 30 is adjusted in position back and forth (left and right in Fig. 7(a)) with respect to the building body 1a. Thereby, the support receiving member 21 and the support member 30 can be connected.

[0034] On the other hand, when the number of chimney units 10 is large, manufacturing errors and the like in each chimney unit 10 accumulate. For this reason, especially on the upper floors, the deviation ΔH 0 from the designed height H 1 of the support receiving member 21 becomes large and may exceed the displaceable compensation amount Δ 40 (ΔH 1 > Δ 40 ).

[0035] In this case, the connecting bolt 16A of the chimney unit 10 to be installed is temporarily removed. Thereby, the support receiving member 21 is separated from the chimney unit 10. The separated support receiving member 21 is raised and lowered by a predetermined height ΔH 21 . The lifting height ΔH 21 is a multiple of the pitch P 16 of the connecting bolt 16A.

[0036] In short, the support receiving member 21 is shifted up and down by the pitch P 16 of the connecting bolt 16A, or depending on the magnitude of the deviation ΔH 0 from the designed height H 1 , the support receiving member 21 is not shifted up and down by n times (n is an integer of 2 or more) of the pitch P 16 . The connecting seat 26 of the shifted support receiving member 21 and the edges 13e, 14e of the outer surface members 13, 14 of the chimney unit 10 are reconnected by the connecting bolt 16A. In this way, the height of the support receiving member 21 can be adjusted according to manufacturing errors and construction errors of the chimney unit 10.

[0037] Thereby, the deviation ΔH 0 from the designed height H 1is subtracted by the pitch P 16 minutes. Or it is subtracted by n times the pitch P 16 . By the subtraction, the deviation ΔH 0 from the designed height H 1 of the support receiving member 21 becomes equal to or less than the compensable deviation amount Δ 40 (ΔH 1 ≦Δ 40 ). Therefore, the deviation compensation structure 40 can compensate for the deviation of the support receiving member 21. As a result, the support receiving member 21 and the support member 30 can be reliably connected.

[0038] Next, another embodiment of the present invention will be described. Regarding the configurations that overlap with those already described in the following embodiments, the same reference numerals are given in the drawings and the description thereof is omitted. <Second Embodiment (Figs. 8 to 9)> As shown in Fig. 8, in the chimney 3B for a building according to the second embodiment, the support receiving member 21 is detachably provided on the other outer panel 14 (corresponding outer panel) of the outer panels 13 and 14. The contact plate 22 is applied to the outer surface of the outer panel 14.

[0039] As shown in Fig. 9, the end portions in the width direction of the contact plate 22 constitute a connection seat 27. The connection seat 27 is arranged on the same plane as the main portion of the contact plate 22 without being bent with respect to the main portion of the contact plate 22. The connection seat 27 is applied to the edge portion 14e of the outer panel 14. The connection seat 27 and the edge portions 13e and 14e are connected by some of the connection bolts 16 for the edge portions 13e and 14e, i.e., the connection bolts 16A.

[0040] The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit thereof. For example, the support receiving member 21 may be directly supported by the building body 1a, or the support member 30 may be omitted. In order to adjust the height of the support receiving member 21, after temporarily removing the connecting bolt 16A of the chimney unit 10 and separating the support receiving member 21 from the chimney unit 10, insertion holes 17 for the connecting bolt 16A may be newly formed at appropriate positions of the edges 13e and 14e at the construction site. Arrangement pitch P of the insertion hole 17 for the connecting bolt 16A near the arrangement area of the support receiving member 21 in the chimney unit 10 17A is made to be a fraction of the arrangement pitch P of the connecting bolt 16 in other parts of the chimney unit 10 16 so that the support receiving member 21 can be adjusted in height for each arrangement pitch P 17A (<P 16 ) of the insertion hole 17.

[0041] A displacement compensation structure 40 may be provided on the support receiving member 21. The displacement compensation structure 40 is not limited to the structure of the embodiment. For example, a cylindrical guide tube may be fitted into the oversize hole 43, and the head or nut of the support receiving bolt 33 may be abutted against the guide tube via a washer having a larger diameter than the guide tube. The insertion hole for the support receiving bolt 33 in the support member 30 or the insertion hole 23b of the support receiving plate 23 may be a long hole extending vertically. A spacer 39 having a thickness equivalent to, for example, the displacement ΔH 1 may be provided at the bottom of the support member 30.

Industrial Applicability

[0042] The present invention can be applied to a chimney installed in a building such as a high-rise office building.

Explanation of Signs

[0043] 1 Building 1a Building frame 3, 3B Chimney for building 10 Chimney unit 13 One outer panel 13e Bent edge 14 The other outer panel 14e Edge 16, 16A connecting bolt 20 supporting structure 21 supporting receiving member 22 abutting plate 23 supporting receiving plate 26 connecting seat 27 connecting seat 30 supporting member 32 fixing bolt 33 supporting receiving bolt 40 displacement compensation structure

Claims

1. In a chimney for a building in which a plurality of chimney units in the shape of a square tube are vertically stacked, and each chimney unit is supported by a building structure via a support structure, the chimney unit has four outer panels that are separate from each other and face in four directions, and an edge of one of the two outer panels that intersect each other is bent outward so as to be parallel to the other outer panel, and an edge of the other outer panel is overlapped with the bent edge, and these two edges are connected by connecting bolts arranged at intervals in the vertical direction. The support structure includes a support receiving member that is separate from the chimney unit and is detachably provided on one or the other corresponding outer panel, the support receiving member has a connecting seat directed to an edge of the corresponding outer panel, and the connecting seat is connected to the two edges by the connecting bolts. The chimney for a building is characterized in that.

2. The support receiving member includes a contact plate directed to the corresponding outer panel and a support receiving plate that projects outward so as to intersect the contact plate and is connected to a support member on the building structure side, and the connecting seat is formed at an end of the contact plate on the edge side of the corresponding outer panel. The chimney for a building according to claim 1.

3. The contact plate is directed to the one outer panel, The end of the contact plate is bent outward to form the connecting seat, and the connecting seat is abutted against the bent edge. The chimney for a building according to claim 2.

4. The contact plate is directed to the other outer panel, The end of the contact plate is directed to an edge of the other outer panel to form the connecting seat. The chimney for a building according to claim 2.

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