JP6255180B2 - Smoke exhaust heat dissipation device - Google Patents

Description

  The present invention relates to a flue gas radiating device that is fixed to a wood stove and is self-supporting.

  Conventionally, wood stoves using wood such as firewood and wood pellets as fuel are known. Conventional wood stove flue gas consists of an indoor pipe that has one end fixed to the wood stove and the other end fixed to the wall or ceiling of the building, and a through pipe that penetrates the wall, floor, or ceiling of the building. Guided outdoors by a flue gas pipe, including an outdoor pipe projecting outdoors from the roof. In a conventional flue pipe, the flue pipe is extended in the direction directly above the wood stove so that the flue gas does not stay, and it is necessary to avoid extending the flue pipe in the horizontal direction as much as possible. Moreover, in the conventional smoke exhaust pipe, in order to prevent a building from burning by heating a through pipe by smoke exhaust, the nonflammable heat insulating material is provided between the through pipe and the building. The indoor pipe often has a heat insulating structure in the vicinity of the wood stove in order to ensure the exhaust pressure necessary to exhaust the smoke to the outdoors. Therefore, in the part that penetrates the wall, ceiling, or floor where the wood stove is installed, the temperature of the smoke exhaust pipe is high, and therefore, a special ceramic heat insulating material is generally provided between the through pipe and the building. Moreover, the exclusive plate for fixing a flue gas pipe to a building is used for the fixed part of a flue gas pipe and a building. Furthermore, a dedicated plate for preventing rain leakage is required at the part where the smoke exhaust pipe passes through the roof.

  The above-mentioned conventional flue pipes can only be constructed by specialists, and the flue pipe parts are also dedicated parts, so the installation of the flue pipes is more expensive than the installation of the wood stove body. There are many cases. Also, in old wooden houses, there are many cases where conventional smoke exhaust pipes cannot be installed due to the structure.

  This invention makes it one of the objectives to raise the installation freedom degree of the smoke exhaust pipe of a wood stove.

  (1) A smoke exhausting heat radiating device for achieving the above object includes a main pipe having a lower end fixed to a wood stove and standing in a vertical direction in an indoor space above the wood stove; Is a partition wall that is divided into a rising flue connected to the smoke outlet of the wood stove and a falling flue whose upper end is connected to the upper end of the rising flue and lowers the flue gas outside the rising flue A sub-tube fixed to the lower end of the main pipe in parallel with the main pipe and supported by the indoor space above the wood stove, and re-raising smoke from the lower end of the descending flue, and A connecting portion for connecting the flue pipe and the auxiliary pipe, which are fixed to the upper end and supported by the indoor space above the wood stove and led to the outside.

  According to the present invention, the flue gas flowing through the rising flue inside the main pipe is kept warm by the flue gas flowing through the down flue inside the main pipe. Since the flue gas is cooled in the downfall flue and the flue gas is accelerated downward in the downfall flue, the exhaust pressure of the flue gas radiating device can be increased. Therefore, the installation freedom degree of the smoke exhaust pipe connected to a smoke exhaust heat radiator can be raised. Moreover, since the descending flue and the re-raising flue can be formed in the indoor space above the wood stove, the smoke emission temperature can be sufficiently lowered in the room where the wood stove is installed. Therefore, also in this respect, the degree of freedom of installation of the smoke exhaust pipe can be increased downstream from the smoke exhaust heat radiator. Furthermore, since the descending flue and the re-raising flue can be formed in the indoor space above the wood stove, the amount of heat released to the room where the wood stove is installed can be increased. Moreover, since the smoke exhaust heat radiating device is configured to stand on the upper side of the wood stove, the smoke exhaust heat radiating device can be installed without modifying the building.

(2) In the flue gas radiating device for achieving the above object, the connection portion is fixed to upper ends of the main pipe and the sub pipe, and a box for retaining the flue gas discharged from the sub pipe is contained therein. You may have.
When this configuration is adopted, the amount of heat released from the connection section to the room can be increased, so that the temperature of the exhaust gas discharged from the smoke exhaust heat radiation device to the smoke exhaust pipe can be lowered and the heat radiation amount of the smoke exhaust heat radiation device Can be increased.

(3) In the smoke exhausting heat radiating device for achieving the above object, each of the sub pipes is provided on both sides of the main pipe, and the box is exhausted from the two sub pipes inside. May be merged.
When this configuration is adopted, the surface area of the secondary pipe can be increased, so that the heat dissipation amount of the entire smoke exhausting heat dissipation device can be increased.

(4) In the flue gas radiating device for achieving the above object, the connection portion may include means for fixing an end portion of a flexible duct as the flue gas pipe.
When this configuration is employed, smoke can be discharged to the outdoors using a flexible duct that is much cheaper than dedicated smoke exhaust pipe components and can be freely routed inside the building.

(5) In the flue gas radiating device for achieving the above object, both ends are fixed to the lower end of the main pipe and the lower end of the sub pipe, and the descending flue and the re-rising flue in the sub pipe You may further provide the horizontal pipe which connects.
When this configuration is adopted, a sufficient space can be secured between the main pipe and the sub pipe, so that the heat radiation amount of the entire smoke exhausting heat radiation device can be increased.

(6) In the smoke exhausting heat radiating device for achieving the above object, the horizontal pipe may have a door or a lid for cleaning at one end of the sub pipe.
When this configuration is adopted, it becomes easy to remove foreign matters such as tar adhering to the inner wall surfaces of the main pipe and the sub pipe.

(7) In the smoke exhausting heat radiating device for achieving the above object, the box may have a door or a lid for cleaning.
When this configuration is adopted, it is easy to remove foreign matters such as tar adhering to the inner wall surface of the box and the sub pipe.

(8) In the smoke exhausting heat radiating device for achieving the above object, the connection portion may include a damper for adjusting a circulation amount of the smoke.
When this configuration is adopted, it is possible to adjust the intake pressure of the smoke exhausting heat radiation device at the smoke outlet of the wood stove even if an electric exhaust fan having a constant rotation speed is provided in the smoke exhaust pipe led to the outside. .

Sectional drawing concerning embodiment of this invention. The side view concerning the embodiment of the present invention. The schematic diagram concerning embodiment of this invention. Sectional drawing concerning embodiment of this invention. The side view concerning the embodiment of the present invention. The side view concerning the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the corresponding component in each figure, and the overlapping description is abbreviate | omitted.

1. FIG. 1 shows an embodiment of the smoke exhausting heat radiation device of the present invention. The smoke exhausting heat dissipating device 1 has a lower part fixed to a wood stove (hereinafter referred to as a stove) 60 and is self-supporting in an indoor space above the wood stove 60. A flexible duct 50 led to the outdoors is connected to the upper part of the smoke exhausting heat dissipation device 1. The smoke exhausting heat radiating device 1 includes a main pipe 10, two sub pipes 30 and 31, horizontal pipes 20 and 22 that connect the main pipe 10 and the sub pipes 30 and 31, and a connection portion 40. An optional stove 60 that uses wood such as firewood, wood pellets, and building waste as fuel can be connected to the smoke exhausting heat dissipation device 1. The stove 60 is provided with a heat radiating top plate 13. The heat radiating top plate 13 is formed with an opening (smoke exhaust port) 13a for exhausting smoke. The heat dissipating top plate 13 may be provided in the stove 60 in advance, or may be a processed product provided in advance in the stove 60, or a dedicated product for attaching the smoke exhausting heat dissipation device 1. Also good. Since the heat radiation top plate 13 may be an iron plate, even a dedicated product can be manufactured at low cost.

  The main pipe 10 is made of iron, stainless steel, or the like, and has a lower end fixed to the heat radiating top plate 13 of the stove 60 and is self-supporting in the vertical direction, thereby supporting the entire smoke exhausting heat radiating device 1. A connecting portion 40 is fixed to the upper end portion of the main pipe 10 and supported by the main pipe 10 in the space above the stove 60. The main pipe 10, the heat radiating top plate 13, and the connection portion 40 may be fixed by any method such as welding, screws, bolts, and press fitting. However, smoke is prevented from leaking into the room from the upper and lower ends of the main pipe 10.

  The inside of the main pipe 10 is partitioned into a rising flue 10a and a falling flue 10b, 10c by a cylindrical partition wall 11 made of iron, stainless steel or the like. The lower end of the partition wall 11 is in contact with the periphery of the opening 13 a formed in the heat radiating top plate 13 of the stove 60. The partition wall 11 and the heat radiating top plate 13 may or may not be joined. However, smoke is prevented from leaking from the lower end of the partition wall 11 to the descending smoke channels 10b and 10c. In order to connect the upper end portion of the rising flue 10a inside the partition wall 11 and the upper end portion of the outer descending flue tubes 10b, 10c inside the main pipe 10, an opening, a notch or the like is formed in the upper end portion of the partition wall 11. Alternatively, the length of the partition wall 11 is made shorter than that of the main pipe 10.

  Openings 10d and 10e are formed at the lower end portion of the main pipe 10 for discharging smoke from the descending flue channels 10b and 10c. One ends of the horizontal tubes 20 and 22 are welded around the openings 10d and 10e. The horizontal tubes 20 and 22 are cylindrical members made of iron, stainless steel, or the like, and one end is connected to the descending smoke passages 10 b and 10 c in the main tube 10, and the other end is closed by the doors 21 and 23. The doors 21 and 23 are attached to the horizontal tubes 20 and 22 so that they can be opened and closed. When the doors 21 and 23 are opened, the inside of the horizontal tubes 20 and 22 and the inside of the sub tubes 30 and 31 can be cleaned. Openings 20c and 20d are formed on the upper surfaces of the horizontal tubes 20 and 22 in the vicinity of the doors 21 and 23.

  The secondary pipes 30 and 31 are cylindrical members that form the re-rising flue 30a and 31a therein, and are formed of iron, stainless steel, or the like. The lower ends of the secondary pipes 30 and 31 are joined around the openings 20 c and 20 d of the horizontal pipes 20 and 22 in a posture parallel to the main pipe 10. That is, the auxiliary pipes 30 and 31 are fixed to the lower end portion of the main pipe 10 in parallel with the main pipe 10 via the horizontal pipes 20 and 22 and supported in the indoor space above the stove 60.

  The connection unit 40 includes a box 41 and a connection pipe 42. The box 41 and the connecting pipe 42 are made of stainless steel, iron, or the like. The connecting portion 40 is supported by the indoor space above the stove 60 with the lower surface of the box 41 joined to the upper ends of the main pipe 10 and the sub pipes 30 and 31. Openings 41b and 41c are formed inside the joint portion of the box 41 with the sub pipes 30 and 31. The flue gas rising up the re-raising flue 30a, 31a flows into and merges with the internal space 41a of the box 41 through the openings 41b, 41c. The volume of the box 41 is set so that the smoke emission temperature from the smoke emission heat radiating device 1 is lowered to about 100 ° C. As shown in FIG. 2, a door 44 is provided on the front side of the box 41. When the door 44 is opened, the inside of the box 41 and the inside of the auxiliary pipes 30 and 31 can be cleaned.

  The connection pipe 42 is a cylindrical member made of iron, stainless steel, or the like whose lower end is joined to the upper surface of the box 41 and constitutes a connection means with the flexible duct 50. The flexible duct 50 is a general-purpose member made of aluminum, stainless steel, or the like, and its end is fitted to the connection pipe 42. An opening 41d is formed inside the joint portion of the box 41 with the connecting pipe 42. The smoke discharged from the opening 41 d of the box 41 flows into the flexible duct 50 through the connection pipe 42 and is guided to the outdoor pipe by the flexible duct 50.

  When the flow path of the flexible duct 50 is long and the exhaust pressure of the smoke exhausting heat dissipation device 1 is insufficient, an exhaust fan may be provided in the middle of the flexible duct 50. Even when the exhaust fan does not have a flow rate adjusting function, the connection pipe 42 is provided with a damper 43 so that the intake pressure of the smoke exhausting heat radiating device 1 (negative pressure of the combustion chamber 60a) can be adjusted. The damper 43 is a valve for adjusting the flow path cross section of the connection pipe 42, and its operation lever 431 is provided outside the connection pipe 42 as shown in FIG. 2. When the damper 43 is provided, a pressure difference can be generated between the upstream side and the downstream side of the damper 43. Therefore, even if the flow rate of the exhaust fan is set according to the flow path length of the flexible duct 50, the combustion chamber of the stove 60 60a can be set to an appropriate negative pressure with good combustion efficiency.

2. FIG. 3 shows the entire configuration of the stove 60 and the smoke exhaust pipe. The stove 60 is installed on the floor H1 of the building. The smoke exhausting heat dissipation device 1 is installed above the stove 60 and is stably supported only by the stove 60. The flexible duct 50 forms a flue from the smoke exhausting heat dissipation device 1 to the outdoor pipe 51.

  When soot or the like burns in the combustion chamber 60a of the stove 60, the temperature of the combustion chamber 60a rises to about 500 ° C. The high temperature smoke exhausted from the stove 60 ascends the rising flue 10a. The flue gas that has reached the upper end of the rising flue 10a flows down the falling flues 10b and 10c by the exhaust pressure of the rising flue 10a. Since the rising flue 10a is surrounded by the falling flues 10b and 10c, the temperature drop of the flue gas in the rising flue 10a is slight. When the flue gas flows into the descending flues 10b and 10c, it is dissipated into the room through the main pipe 10, and is thus cooled rapidly. As a result, a temperature difference occurs between the upper part and the lower part of the downfall flues 10b and 10c, so that the cooled flue gas accelerates the downfall flues 10b and 10c downward. Thus, since the main pipe 10 and the partition wall 11 constitute a so-called heat riser, the exhaust pressure of the smoke exhausting heat dissipation device 1 can be increased.

  Moreover, since the descending flue 10b, 10c, the sub pipes 30, 31, and the box 41 have a sufficient surface area, the smoke exhausting heat radiating device 1 is capable of safely discharging the smoke into the flexible duct 50 having low heat resistance. It can be cooled sufficiently. The smoke exhaust temperature flowing into the flexible duct 50 should be sufficiently low so that the heat insulation treatment is unnecessary even in the portion where the flexible duct 50 passes through the building structure such as the walls H4, H5, and the ceiling H2 near the stove 60. Can do. Furthermore, since the smoke exhausting heat radiating device 1 releases the heat of the smoke exhausting into the room where the stove 60 is installed, the heating efficiency can be improved.

  In addition, since the flexible duct 50 that is not heated excessively by the flue gas does not require the surrounding heat insulation, the flexible duct 50 can be freely routed on the floor H1 or piped under the floor as shown in FIG. 3B. Therefore, even when the through holes cannot be formed in the walls H4, H5 and the ceiling H2 in the vicinity of the stove 60, the wood stove 60 can be installed. Moreover, the horizontal direction extension distance of the flexible duct 50 can also be extended to 10 m or more by providing an exhaust fan between the smoke exhausting heat radiation device 1 and the outdoor pipe 51 and forcibly exhausting. In addition, since the damper 43 is provided in the smoke exhausting heat dissipation device 1, the negative pressure of the combustion chamber 60a can be adjusted regardless of the installation position and flow rate of the exhaust fan.

  As described above, the flue gas radiating device 1 can accelerate the flue gas toward the downstream, so that the degree of freedom of installation of the flue gas pipe connected to the flue gas radiating device 1 can be increased. Moreover, in the indoor space where the stove 60 is installed, the descending flues 10b and 10c and the re-raising flues 30a and 30b can be formed, so that the smoke emission temperature can be sufficiently lowered in the room where the stove 60 is installed. it can. Also in this respect, the degree of freedom of selection and installation of the smoke exhaust pipe can be increased downstream from the smoke exhaust heat radiation device 1. Furthermore, in the indoor space where the stove 60 is installed, a descending flue and a re-raising flue can be formed, so that the amount of heat released to the room where the stove 60 is installed can be increased. And since the smoke exhaust heat radiating device 1 is the structure which becomes independent above the stove 60, the smoke exhaust heat radiating device 1 can be installed, without modifying a building. That is, the smoke exhausting heat dissipating device 1 can significantly reduce the installation cost of the smoke exhaust pipe, and the installation cost of the smoke exhausting device 1 is also low, so that the total cost of installing the wood stove 60 can be reduced.

  In addition, when the flue gas from the wood stove 60 is cooled, soot is attached to the flue gas as tar. However, since the inside of the main tube 10 is sufficiently hot, no tar adheres to the main tube 10. Further, tar adhering to the auxiliary pipes 30 and 31 can be easily removed by opening the doors 21 and 23 of the horizontal pipes 20 and 22 and the door 44 of the box 41. And the soot contained in the flue gas is sufficiently cooled in the flue gas radiating device 1 and adheres to the auxiliary pipes 30, 31, the box 41, etc. as tar. It is prevented from adhering.

3. Other Embodiments The technical scope of the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention. For example, the main tube 10 and the partition wall 11 may be formed of a square tube as shown in FIG. 4A, or may be formed of a circular tube as shown in FIG. 4B. Further, as shown in FIGS. 4C and 4D, the inside of the main pipe 10 may be partitioned by partition walls 11 and 11b made of plates instead of pipes.

  One or more sub-tubes may be provided, and the main tube 10 and the sub-tube 30 may be arranged in the front-rear direction of the stove 60 as shown in FIGS. The main pipe 10 and the sub pipe 30 may be directly connected without the horizontal pipe 24. In this case, it is preferable to provide the horizontal pipe 24 because the heat radiation amount of the main pipe 10 and the sub pipe 30 is reduced. Further, the volume of the connecting portion 40 may be set according to the heat capacity of the stove 60 and the heat radiation amount of the main pipe 10 and the sub pipe 30. If the smoke emission temperature is sufficiently low without providing a box, FIG. As shown, there may be no connection box 40 where the connection pipe 42 is directly connected to the sub pipe 30 without a box.

  In addition, as shown in FIG. 6, when there is a smoke exhaust port in the projecting portion 61 behind the stove 60, the tubular partition wall 11 is inserted into the smoke exhaust port of the projecting portion 61 instead of the heat dissipating top plate of the stove 60. The smoke exhaust heat dissipating device 1 may be fixed to the stove 60 by fixing the inner wall surface of the smoke stack and the partition wall 11 with bolts, fitting or the like.

  Further, a lid may be provided instead of the door for removing tar in the flue, or the smoke exhausting heat radiating unit may be configured to be disassembled and the door and the lid may not be provided.

DESCRIPTION OF SYMBOLS 1 ... Smoke exhaust heat dissipation device, 10 ... Main pipe, 10a ... Ascending flue, 10b ... Falling flue, 10d ... Opening 11a ... Bulkhead, 13 ... Radiation top plate, 13a ... Opening, 20 ... Horizontal pipe, 22 ... Horizontal pipe, 20c ... Opening, 21 ... Door, 23 ... Door, 30 ... Sub-pipe, 31 ... Sub-pipe, 30a ... Re-raising flue, 40 ... Connection part, 41 ... Box, 41a ... Internal space, 41b ... Opening, 41c ... Opening 41 ... Opening, 42 ... Connection pipe, 43 ... Damper, 44 ... Door, 50 ... Flexible duct, 51 ... Outdoor pipe, 60 ... Wood stove, 60a ... Combustion chamber, 61 ... Projection, 431 ... Operation lever

Claims (6)

A main pipe whose lower end is fixed to a wood stove, and is self-supporting in a vertical direction in an indoor space above the wood stove;
The inside of the main pipe, the rising flue whose lower end is connected to the smoke outlet of the wood stove, and the upper end is connected to the upper end of the rising flue to lower the flue gas outside the rising flue A partition wall that divides into a downfall flue,
A sub pipe fixed to the lower end of the main pipe in parallel with the main pipe and supported in the indoor space above the wood stove, and re-raising smoke from the lower end of the descending flue;
A connecting portion for connecting the sub-tube with the flue gas tube fixed to the upper end of the sub-tube and supported by the indoor space above the wood stove and led to the outside;
Equipped with a,
Said connecting portion, said main pipe and said fixed to the upper end portion of the sub tube, have a box to stay the flue gas is discharged to the inside of the secondary tube,
The sub pipes are provided one on each side of the main pipe,
The box joins the flue gas discharged from the two secondary pipes inside,
Smoke dissipation device. The connection portion has means for fixing an end portion of the flexible duct as the smoke exhaust pipe,
The smoke exhausting heat radiation device according to claim 1 . Both ends are fixed to the lower end of the main pipe and the lower end of the sub pipe, and further includes a horizontal pipe connecting the descending flue and the re-rise flue in the sub pipe,
The smoke exhausting heat radiating device according to claim 1 or 2 . The horizontal pipe has a door or lid for cleaning at one end of the secondary pipe.
The smoke exhausting heat radiation device according to claim 3 . The box has a door or lid for cleaning,
The smoke emission heat dissipation device according to any one of claims 1 to 4 . The connecting portion has a damper for adjusting the flow rate of the flue gas,
The smoke exhausting heat radiation device according to any one of claims 1 to 5 .

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