JP3195876U - Double wall insulated chimney opening structure - Google Patents

Abstract

An object of the present invention is to provide a double-wall insulated chimney that can easily inspect and clean the inside of the chimney through an opening provided in a bent pipe of a double-wall insulated chimney connected to a heater such as a fireplace or a wood-burning stove installed indoors. An opening structure is provided. A bent pipe is formed in the middle of a double wall heat chimney comprising a double wall with a heat insulating material interposed between an outer peripheral cylindrical portion and an inner peripheral cylindrical portion, and the bent outer periphery of the bent pipe is inclined. An outer opening 14 is formed on the upper surface side of the cylindrical portion 7, and an outer lid 15 that closes the outer opening 14 is provided so as to be openable and closable. An inner opening 19 having a smaller area than the outer opening 14 is formed in the inner peripheral cylindrical portion directly below, and an inner lid 18 that closes the inner opening 19 is provided so as to be openable and closable. The back plate 20 that fits in the outer lid 15 is fixed, and the closed state of the outer lid 15 and the inner lid 18 can be locked. [Selection] Figure 3

Description

  The present invention relates to an opening structure of a double wall heat insulation chimney that can easily check and clean the inside of the chimney from an opening provided in a bent pipe of the double wall heat insulation chimney.

  Conventionally, heating equipment such as a fireplace and a wood-burning stove installed indoors exhausts air from a room through an outer wall through a chimney provided outside. As such a chimney structure, a chimney having a connection structure in which a cylindrical chimney divided into short lengths is continuously connected to form a chimney having a predetermined length is known.

  On the other hand, chimneys such as those described above need to clean the soot and dust generated inside the chimney.Therefore, check the inside of the chimney periodically, or insert a brush etc. inside the chimney to clean it. There is a need to do.

  Incidentally, as shown in FIG. 5A, in the case of the chimney structure in which the divided chimneys 30a and 30b are connected by the flanges 31a and 31b of the respective chimneys, the bolt 32 fixing the upper and lower flanges 31a and 31b. Then, as shown in FIG. 5 (b), the chimney 30a can be removed by sliding it sideways.

  However, in the case of the chimney structure in which the upper and lower chimneys 30a and 30b are connected by the flanges 31a and 31b as described above, there is a problem that the inside of the chimney oozes out from between the connection parts of the upper and lower flanges 31a and 31b. For this reason, plug-in chimneys have been used in recent wood stoves.

  As shown in FIGS. 6A and 6B, this plug-in type chimney has a circumferential convex portion 34 formed at the upper end of the lower chimney 33b at the connection portion of the divided chimneys 33a and 33b. By inserting the circumferential convex portion 34 into the lower peripheral wall of the upper chimney 33a, the inside of the chimney is prevented from oozing out.

  As described above, as a chimney used for a wood stove or the like in recent years, as shown in FIG. 6A, a structure in which the divided chimneys 33a and 33b have a plug-type chimney structure is widely used. However, in the case of this plug-in type chimney, it is impossible to shift the divided chimney alone in the lateral direction. As shown in FIG. 6B, in order to extract the chimney 33a upward, Troublesome work such as removing the chimney is required.

  As shown in FIG. 7A, in the case of a chimney structure in which a vertical chimney 37 is connected to the lower part of a horizontal chimney 36 penetrating the outer wall 35, an opening 38 is formed at the end of the horizontal chimney 36. If it is formed, it becomes possible to inspect and clean the inside of the chimney 36 in the lateral direction, but it is difficult to inspect and clean the inside of the chimney 37 in the vertical direction.

  On the other hand, as shown in FIG. 7B, when the bent pipe 39 connecting the vertical chimney 37 and the horizontal chimney 36 is provided, by providing an opening 40 on the inclined upper surface of the bent pipe 39, Inspection and cleaning of the inside of the chimney 37 in the vertical direction and the inside of the chimney 36 in the horizontal direction can be performed from the opening 40.

  Therefore, as described above, it is desirable to form a bent pipe at the connection portion between the vertical chimney and the horizontal chimney, but as described in the following patent document, in the case of a double structure chimney The opening provided in the bent tube needs to be formed in both the inner cylindrical portion and the outer cylindrical portion. However, since a heat insulating material is provided between the inner cylindrical portion and the outer cylindrical portion, it is particularly difficult to provide an opening in the inner cylindrical portion and further provide an opening / closing lid in the opening.

JP2013-124827A

  The present invention has been made in view of the above circumstances, and inspects and cleans the inside of a chimney from an opening provided in a bent pipe of a double wall insulated chimney connected to a heater such as a fireplace or a wood stove installed indoors. It is an object of the present invention to provide an opening structure for a double wall insulated chimney that can be easily performed.

  In order to solve the above problems, the double-wall insulated chimney opening structure according to claim 1 of the present invention comprises a double wall in which a heat insulating material is interposed between an outer peripheral cylindrical portion and an inner peripheral cylindrical portion. A bent pipe is formed in the middle of the heavy-wall insulated chimney, an outer opening is formed on the upper surface side of the outer peripheral cylindrical portion inclined to the bent pipe, and an outer lid that closes the outer opening is provided so as to be opened and closed. The inner opening that is smaller in area than the outer opening is formed in the inner peripheral cylinder portion directly below the outer opening, and an inner lid that closes the inner opening is provided to be openable and closable. A back plate that fits in the inner opening is fixed to the inner side surface of the inner surface of the inner surface of the inner surface, so that the closed state of the outer lid and the inner lid can be locked.

  Further, the opening structure of the double-wall heat insulation chimney according to claim 2 is the opening structure of claim 1, wherein the outer lid is attached in the vicinity of the outer opening so as to be opened and closed by a hinge, and the inner lid is opened and closed by the hinge in the vicinity of the inner opening. It is attached.

  The bent wall of the double wall insulated chimney according to the present invention can be attached to the connecting portion between the vertical chimney and the horizontal chimney. In addition, an outer opening is formed on the upper surface side of the outer peripheral cylindrical portion inclined to the bent pipe, and an outer lid that closes the outer opening is provided so that it can be opened and closed, so that the outer opening can be opened and closed by opening and closing the outer lid. It is.

  Further, since the heat insulating material is cut only in the region of the outer opening and the cut portion can be removed, the cut portion of the heat insulating material can be removed or replaced by opening the outer lid.

  In addition, an inner opening having a smaller area than the outer opening is formed in the inner peripheral cylindrical portion directly below the outer opening, and an inner lid that closes the inner opening is provided so that it can be opened and closed. After the incision portion of the heat insulating material is taken out, the inner opening can be opened and closed by opening and closing the inner lid.

  In the configuration as described above, in the double wall insulated chimney of the present invention, without removing a part of the chimney, by opening the outer opening and the inner opening of the bent pipe as it is installed, From these openings, it is possible to observe the inside of the chimney in the vertical direction and the horizontal chimney at the same time, and to insert tools such as brushes, so it is possible to easily perform periodic inspection and cleaning inside the chimney Become.

It is a side view which shows the condition which made the double wall heat insulation chimney penetrate the outer wall in the Example of this invention. It is a figure which shows the bending pipe in the Example of this invention, (a) is a front view, (b) is a side view, (c) opens the inner cover in the site | part shown by the AA arrow line of (a). (D) is a sectional view showing a state where the inner lid is closed at a portion indicated by an AA arrow line in (a). It is an external view which shows the state which opened the outer cover and inner cover of the bending pipe in the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows the bent pipe in the Example of this invention, (a) shows the state which closed the outer cover, (b) shows the state which opened the outer cover, (c) is the cutting | disconnection part of a heat insulating material (D) shows the state where the inner lid is opened. It is a partial side view which shows the condition which connected the conventional chimney with the flange, (a) shows the connection state of an upper and lower chimney, (b) shows the state which shifted the upper chimney to the horizontal direction. It is a partial side view which shows the condition which connected the conventional chimney with the insertion structure, (a) shows the connection state of an upper and lower chimney, (b) shows the state which shifted the upper chimney upward. In the structure of a conventional chimney, (a) is a diagram showing a state in which a vertical chimney is connected to the lower part of a horizontal chimney, and (b) is a bent pipe connecting the horizontal chimney and the vertical chimney. It is a figure which shows the state connected.

  Embodiments of the present invention will be described below with reference to the drawings.

  In this embodiment, as shown in FIG. 1, a vertical chimney 2 connected to a heater 1 such as a fireplace or a wood stove installed indoors is connected to a horizontal chimney 4 via a bent pipe 3. The horizontal chimney 4 passes through the outer wall 5 from the room and is connected to the outdoor chimney 6 to exhaust the combustion gas generated from the heater 1.

  Further, as shown in FIG. 3, the bent pipe 3 of FIG. 1 has a heat insulating material cutting portion 9 interposed between a cylindrical outer cylindrical portion 7 and an inner peripheral cylindrical portion 8 formed of stainless steel or the like. As shown in FIG. 1, the structure having a double wall insulated chimney composed of double walls and connecting the vertical chimney 2 and the horizontal chimney 4 is a substantially right angle shape called 90 ° elbow. Is forming.

  As shown in FIG. 1 or FIG. 2, the bent pipe 3 is provided between a vertical cylinder 10 connected to the vertical chimney 2 and a horizontal cylinder 11 connected to the horizontal chimney 4. An inclined outer cylindrical portion 7 in which the connecting portions 12 and 13 are inclined at an angle of approximately 45 ° is formed and welded and joined to the vertical cylindrical body 10 and the horizontal cylindrical body 11.

  Further, as shown in FIG. 3, the bent tube 3 is provided with an outer opening 14 on the upper surface side of the outer peripheral cylindrical portion 7 of the bent tube 3 and an openable lid 15 that closes the outer opening 14. It is configured.

  More specifically, as shown in FIG. 3, the outer opening 14 is cut in a region that forms an area of substantially the upper half of the inclined outer cylindrical portion 7 that forms the bent tube 3, and the shape is slightly wider than the outer opening 14. The outer lid 15 is connected to a hinge member 16 such as a hinge (see FIG. 4A) so as to be opened and closed. In such a configuration, when the outer lid 15 is closed, as shown in FIG. 2B, the peripheral portion of the outer lid 15 covers the upper surface of the peripheral edge of the outer opening 14, and FIG. As shown, the outer opening 14 can be closed.

  Further, as shown in FIG. 2B, a fastening fitting 17 for fixing the closed state of the outer lid 15 is attached to an end portion of the outer lid 15. The fastening bracket 17 has a structure in which, for example, a hook 17a is fixed to the end of the outer lid 15, and a U-shaped bracket 17c that is fastened by a lever 17b is attached to the outer peripheral cylindrical portion 7 in the vicinity of the outer opening 14. The closed state of the outer lid 15 can be locked by hooking the U-shaped bracket 17c on the hook 17a and pulling the lever 17b with the lid 15 closed.

  Further, as shown in FIG. 4B, the cutting portion 9 of the heat insulating material provided between the outer peripheral cylindrical portion 7 and the inner peripheral cylindrical portion 8 can be replaced by excising only the region of the outer opening 14. After the outer lid 15 is opened, the inner lid 18 is exposed as shown in FIG. 4C by removing the incised portion of the cutting portion 9 of the heat insulating material.

  As shown in FIG. 3, the inner lid 18 provided on the bent pipe 3 in this way is an ellipse having a smaller area than the outer opening 14 in the inner peripheral cylindrical portion 8 immediately below the outer opening 14 in the bent pipe 3. An inner opening 19 having a shape is formed, and an inner lid 18 having a shape slightly wider than the inner opening 19 is connected by a hinge member 16 such as a hinge so as to be opened and closed.

  Further, as shown in FIG. 3, a back plate 20 that fits in the inner opening 19 is fixed to the inner surface of the inner lid 18. In such a configuration, a cross-sectional state of the inner lid 18 and the inner opening 19 in a state where the inner lid 18 is opened is as shown in FIG. 2C, and the inner lid 18 is closed toward the inner opening 19. Then, the back plate 20 of the inner lid 18 fits in the inner opening 19 and closes the inner opening 19. For this reason, the back plate 20 eliminates the step of the inner opening 19, and it is possible to prevent leakage of smoke, spear, and the like from the inner lid 18.

  Further, as shown in FIG. 3, the inner lid 18 is also attached with a fastening bracket 17 by a combination of a hook 17 a and a U-shaped bracket 17 c and the like, as shown in FIG. The closed state of the inner lid 18 can be locked by hooking the hook 17a with a U-shaped metal fitting 17c fixed to the end of the inner lid 18 and pulling the lever 17b.

  In addition, as shown in FIG. 3, while forming the circumferential convex part 21 inside in the edge part of the horizontal direction cylinder 11 of the bending pipe 3, several L-shaped groove part 22 is formed in the outer periphery of an edge part. The L-shaped groove portions 22 are formed at equal intervals, and are connected by, for example, fitting and turning to a convex portion (not shown) provided on the inner periphery of the end portion of the horizontal chimney 4 in FIG. It is possible.

  When inspecting and cleaning the inside of the double wall heat insulation chimney of the present embodiment configured as described above, the fastening bracket 17 of the outer lid 15 of the bent pipe 3 shown in FIG. When the outer lid 15 is opened as shown in FIG. 4B, the cut portion 9 of the heat insulating material is exposed in the outer opening 14, and when the cut portion 9 of the heat insulating material is taken out, it is shown in FIG. 4C. Thus, the inner lid 18 is exposed. And as shown in FIG.4 (d), it becomes possible to open | release the inner side opening 19 by releasing the clamp | tightening metal fitting 17 of the inner cover 18, and opening the inner cover 18. As shown in FIG.

  In the configuration as described above, the double-wall insulated chimney according to the present invention has the outer opening 14 and the inner opening 19 of the bent pipe 3 in the installed state without removing a part of the chimney. By opening, the inside of the chimney 2 in the vertical direction and the inside of the chimney 4 in the horizontal direction can be simultaneously observed from these openings, and tools such as brushes can be inserted, and periodic inspection and cleaning in the chimney are easily performed. Is possible.

  The double-wall insulated chimney opening structure according to the present invention facilitates inspection and cleaning inside the chimney from the opening provided in the bent pipe of the double-wall insulated chimney connected to a heater such as an indoor fireplace or wood stove. It can be used as an opening structure of a double wall insulated chimney.

DESCRIPTION OF SYMBOLS 1 Heating tool 2 Longitudinal chimney 3 Curved pipe 4 Lateral chimney 5 Outer wall 6 Outdoor chimney 7 Outer cylinder part 8 Inner cylinder part 9 Insulation cutting part 10 Vertical cylinder 11 Horizontal cylinders 12, 13 Connecting part 14 Outer opening 15 Outer lid 16 Hinge member 17 Fastening bracket 17a Hook 17b Lever 17c U-shaped bracket 18 Inner lid 19 Inner opening 20 Back plate 21 Projection 22 L-shaped groove

In order to solve the above problems, the double-wall insulated chimney opening structure according to claim 1 of the present invention comprises a double wall in which a heat insulating material is interposed between an outer peripheral cylindrical portion and an inner peripheral cylindrical portion. A bent pipe is formed in the middle of the heavy-wall insulated chimney, an outer opening is formed on the upper surface side of the outer peripheral cylindrical portion inclined to the bent pipe, and an outer lid that closes the outer opening is provided so as to be opened and closed. The inner opening that is smaller in area than the outer opening is formed in the inner peripheral cylinder portion directly below the outer opening, and an inner lid that closes the inner opening is provided to be openable and closable. A back plate that fits in the inner opening is fixed to the inner side surface of the inner cover, and a first locking means that enables locking of the closed state of the outer lid and a second locking means that enables locking of the closing means of the inner lid are provided. It is characterized by that.

Claims (2)

A curved pipe is formed in the middle of a double-walled insulation chimney consisting of a double wall with a heat insulating material interposed between the outer peripheral cylindrical part and the inner peripheral cylindrical part, and the outer side is on the upper surface side of the outer peripheral cylindrical part inclined by the curved pipe. In addition to forming an opening, an outer lid that closes the outer opening is provided so that it can be opened and closed, and the heat insulating material can be removed by removing only the area of the outer opening. An inner lid that closes the inner opening is provided so that it can be opened and closed. A back plate that fits in the inner opening is fixed to the inner side surface of the inner lid, and the closed state between the outer lid and the inner lid is locked. Opening structure of double-wall insulated chimney characterized by enabling. 2. The double-wall insulated chimney opening according to claim 1, wherein the outer lid is attached to be able to be opened and closed by a hinge in the vicinity of the outer opening, and the inner lid is attached to be able to be opened and closed by a hinge in the vicinity of the inner opening. Construction.