JP2009092253A - Double chimney combustion appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double chimney combustion appliance capable of efficiently heating the inside of a building by allowing the exhaust energy of high temperatures to pass through an outer exhaust tube of the double chimney, to solve a problem on wasteful use of the energy which is conventionally released to the outside air as high energy of high temperatures from the double chimney. <P>SOLUTION: This double chimney combustion appliance is a combustion appliance A having the double chimney 2 communicated with a combustion portion 1 of the combustion appliance X at its base portion, and the double chimney 2 is composed of an inner tube 2a as a first exhaust tube and the outer tube 2b as a second exhaust tube. The inner tube 2a and the outer tube 2b of the double chimney 2 are composed of one connected pipe. Further an exhaust tube 3a as an extending portion of the outer tube 2b is provided with an exhaust fan 4. By disposing the exhaust fan 4, a degree of freedom in designing the first exhaust tube and the second exhaust tube can be increased. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double chimney combustion appliance, and more particularly to a heating combustion appliance having a double pipe in an exhaust stack.

  When things are burned at low temperatures in a burning appliance, incomplete combustion occurs and a large amount of smoke is generated. However, even if it is burned at a high temperature, if the temperature of the exhaust in the exhaust stack decreases rapidly due to the rapid release of heat from the outer periphery of the exhaust stack, the incomplete combustion component contained in the exhaust becomes soot and adheres to the exhaust stack inner wall It is easy to do. A double exhaust pipe, that is, a double chimney is used to prevent heat dissipation from the outer periphery of the exhaust stack and release it from the exhaust opening to the outside air while keeping the exhaust temperature at a high temperature. It is used.

As a combustion appliance using a double exhaust pipe, there existed patent document 1 (Unexamined-Japanese-Patent No. 2004-045020), patent document 2 (Unexamined-Japanese-Patent No. 2000-161650), etc., for example. The double chimneys described in these documents are provided with an exhaust pipe inside and an intake pipe for taking in combustion air on the outside. There was only an air layer between the outside and the outside. Of course, because there is an outer air layer, the exhaust temperature in the chimney is protected, and it is released into the outside air at a higher exhaust temperature than in the case of a single chimney, which reduces the adhesion of soot in the chimney. Become. This means that when a combustion appliance using such a double chimney is viewed as a heating appliance, exhaust gas with a high temperature is released to the outside air, which has a great disadvantage of wasting energy.
Japanese Patent Laid-Open No. 2004-045020 Japanese Unexamined Patent Publication No. 2000-161650

  The present invention has been made in order to solve the waste of energy that has been discharged from the double chimney into the outside air at high temperature and high energy as shown in Patent Document 1 and Patent Document 2 described above. It aims at providing the double chimney combustion appliance which can heat the inside of a building efficiently by letting the energy of hot exhaust gas pass through a chimney.

  In order to achieve the above object, a double chimney combustion apparatus according to claim 1 of the present invention includes a combustion part in which fuel is combusted inside, one end opened in the combustion part, and extends upward from the combustion part. A first exhaust pipe having a portion, and a second exhaust pipe that communicates with the other end of the first exhaust pipe, at least part of which is adjacent to the upwardly extending part of the first exhaust pipe, and has an exhaust opening. And an exhaust fan provided in the second exhaust cylinder.

  The double chimney combustion appliance according to claim 2 is a double pipe in which a portion adjacent to the first exhaust pipe and the second exhaust pipe has an inner cylinder and an outer cylinder, and the first exhaust pipe is In the inner tube of the double tube, the second exhaust tube is an outer tube of the double tube.

  In the double chimney combustion appliance according to claim 3, the adjacent portion of the first exhaust pipe and the second exhaust pipe is a double pipe in which the inside of one pipe is divided by a partition wall. It is characterized by.

  The double chimney combustion appliance according to claim 4 is characterized in that a desired position of the first exhaust stack is a bulging portion.

  The double chimney combustion appliance according to claim 5 is characterized in that the first exhaust pipe is not adjacent to the second exhaust pipe and has a portion where the entire outer periphery is exposed.

  In conventional double chimneys, the inner cylinder is the exhaust cylinder and the outer cylinder is adjacent as the intake cylinder, so the temperature drops sharply as it goes upward, and in a test where a double chimney of only 1 meter is mounted vertically What was 180 ° C. at the lower end of the double chimney was lowered to 80 ° C. at the outer periphery of the upper end. For this reason, there has been an example in which an expensive double chimney in which a heat insulating material is sealed between the inner and outer cylinders of a conventional double chimney is used.

  On the other hand, in the double chimney combustion apparatus of the present invention, the first exhaust pipe and the second exhaust pipe communicate with each other, and a double chimney composed of one pipe adjacent at least partially is formed. . Therefore, since the second exhaust pipe exhausts outside while warming the first exhaust pipe, the temperature of the first exhaust pipe can be kept high. As a result, the temperature of the double chimney becomes higher as it goes upward, and can be used for indoor heating or the like.

  The double chimney composed of the inner and outer cylinders of the above-mentioned double chimney combustion appliance is a double chimney having a structure called a single-end structure, which consists of a single pipe communicating with the inner and outer cylinders, and was discharged from the combustion section. Exhaust gas passes through the inner cylinder as the first exhaust cylinder, turns to the outer cylinder as the second exhaust cylinder, and is discharged to the outside through the opening at the end. Therefore, the exhaust in the inner cylinder is kept warm by the exhaust in the outer cylinder, and the temperature of the outer periphery of the double chimney increases as it goes above the double chimney. In an actual measurement test of a double chimney having a height of 5 meters, the outer peripheral temperature of the double chimney above 5 meters was 280 ° C even though the outer peripheral temperature of the base of the double chimney was 180 ° C. Conventionally, even when trying to heat both the second and third floors with a single heater, the temperature at the outer periphery of the exhaust stack decreases as it goes upward, and the heating effect cannot be obtained at higher levels. In the case of a combustion appliance, the heating effect can be sufficiently obtained with one double chimney combustion appliance up to about 3 to 4 stories by adjusting the size of the appliance. In addition, since the exhaust fan is provided in the second exhaust cylinder and forced exhaust is performed, the structure such as the direction and length of the first exhaust cylinder and the second exhaust cylinder can be freely designed. Furthermore, since the high temperature part becomes longer in the chimney, it can be burned completely and the generation of soot can be reduced.

  In the double chimney combustion appliance in which the desired position of the first exhaust pipe and / or the second exhaust pipe is the bulging part, the circulation speed of the exhaust gas decreases at the bulging part and slowly flows over time. The surface area of the bulging part is large. Therefore, the amount of heat radiation from the bulging part increases and the heating effect on the outer periphery of the bulging part increases. In addition, even when the desired position of the first exhaust pipe is a bent portion, the bent portion passage time of the exhaust gas becomes long and the surface area of the bent portion is large, so that the amount of heat radiation from the bent portion increases and the bent portion outer periphery is increased. Increases heating effect.

  Since the first exhaust pipe is not adjacent to the second exhaust pipe and the entire outer periphery has an exposed portion, the amount of heat radiation from the exposed portion is large, and the heating effect is improved.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing the configuration of a first embodiment of the double chimney combustion apparatus of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. It is a cross-sectional view of the double pipe which divided the inside of this pipe with the partition. In the figure, Y indicates the outer wall of the building, and Z indicates the floor of the building. As shown in the figure, the double chimney 2 communicated with the combustion unit 1 on the combustion appliance X and is erected substantially vertically is a double pipe called a single end structure, and the inner cylinder 2a becomes the first exhaust pipe, The outer cylinder 2b is a second exhaust cylinder. The inner cylinder 2a and the outer cylinder 2b communicate with each other at the end (the upper end in the figure). An exhaust cylinder 3a extends from the lower side of the outer cylinder 2b, an exhaust fan 4 is attached to the front end side of the exhaust cylinder 3a, and the exhaust cylinder 3a connected to the exhaust fan 4 penetrates the outer wall Y of the building. The opening 3b is open to the outdoors. Exhaust gas generated by burning fuel in the combustion section 1 of the combustion appliance X is forcibly sucked by the exhaust fan 4 and discharged to the outside from the opening 3b at the end of the exhaust cylinder 3a. The exhaust cylinder 3a when penetrating the outer wall Y of the building is a double pipe with an intake cylinder 5 as an outer cylinder attached to the outer periphery. The proximal end of the intake cylinder 5 is extended and opened as an extended portion 5a in communication with the bottom of the combustion portion 1 in the combustion appliance X. Outside air as intake air supplied to the combustion appliance X from between the intake cylinder 5 and the exhaust cylinder 3a, which are outer cylinders, is taken in along the arrows. The intake cylinder 5 is a fireproof layer that blocks the building from the outer wall Y. In FIG. 1, the extending portion 5 a of the intake cylinder 5 is taken into the combustion portion 1 from below the combustion appliance X, but may be structured to be taken in from the side or the rear of the combustion appliance X. In addition, it is possible to increase the combustion temperature in the combustion chamber 1 and improve the combustion efficiency when the intake cylinder 5 is covered as long as possible to cover the outer periphery of the exhaust cylinder 3a and then taken into the combustion part 1 of the combustion appliance X. In addition, the exhaust temperature is increased and the heating effect is improved. Further, as the double pipe, instead of the double chimney 2, a double pipe 6 in which one pipe as shown in FIG. 3 is divided into two adjacent pipe lines 6b and 6c by a partition wall 6a may be used. it can. The pipe 6b and the pipe 6c communicate with each other at the upper end, one pipe communicates with the combustion unit 1 through the first exhaust pipe, and the other pipe serves as the second exhaust pipe to the exhaust fan 4. Connected.

  In the double chimney combustion appliance configured as described above, exhaust gas generated from the fuel combusted in the combustion section 1 in the combustion appliance X is forcibly sucked by the exhaust fan 4 attached to the exhaust cylinder 3a as an extension of the second exhaust cylinder. Is done. The exhaust sucked by the exhaust fan 4 passes from the combustion section 1 through the inner cylinder 2a as the first exhaust cylinder to the outer cylinder 2b as the second exhaust cylinder at the end of the double pipe and from below the outer cylinder 2b. The gas is discharged into the extended exhaust tube 3a, and is discharged from the opening 3b at the tip to the outside air through the exhaust fan 4 attached to the exhaust tube 3a. The exhaust gas in the inner cylinder 2a having the above configuration is blocked from the indoor outdoor air by an exhaust layer in which exhaust gas that has traveled from the inner cylinder 2a to the outer cylinder 2b flows, that is, a heat insulation layer. Therefore, the exhaust temperature in the inner cylinder 2a is not easily lowered, but the temperature of the outer periphery of the outer cylinder 2b can be increased as it goes above the double chimney 2, and the double chimney 2 is used as a heating appliance. Can be used.

  FIG. 4 is a longitudinal sectional view showing a state in which the double chimney combustion appliance of the present invention is installed in a three-story multi-level building. Z1 is a ceiling that divides the 12th floor, and Z2 is a ceiling that divides the 23rd floor. In this embodiment, the combustion appliance X is installed on the first floor of the multi-level building, and the ceiling is penetrated by the double chimney 2 composed of a double pipe standing on the combustion appliance X. The outer peripheral temperature above the double chimney was higher than that of the double chimney with the outer cylinder as the air layer. Therefore, the heating of the upper floor of the second floor or more can be performed efficiently. When a combustion instrument having a double chimney 2 having a height of 5 meters was formed as a prototype, in this prototype, the exhaust temperature inside the inner cylinder 2a increased toward the upper side, and the temperature around the outer cylinder 2b increased. It was. That is, when measured at the outer circumference of the outer cylinder 2b of the double chimney 2 consisting of an inner and outer double pipe having a height of 5 meters, when the temperature of the outer circumference of the lower end portion of the outer cylinder 2b is 180 ° C., the upper end of the outer cylinder 2b (In the case of the conventional single chimney, the temperature of the base of the exhaust stack is 250 ° C., and the temperature goes down above the exhaust stack. The temperature is 150 meters at the position of 5 meters at the upper end of the exhaust stack. In particular, by providing the exhaust fan 4, the length and the vertical direction of the inner cylinder 2a as the first exhaust cylinder and the outer cylinder 2b as the second exhaust cylinder can be freely set. Increased freedom.

  As mentioned above, if it is a 2-3-story building, a combustion appliance is installed on the first floor, and a double pipe exhaust pipe, that is, a double chimney 2 is used to penetrate the ceiling, one unit Heating of rooms on the 2nd and 3rd floors can be done at low cost with this double chimney combustion appliance. (In the past, when using such a method, an expensive chimney called an insulation chimney with an outer cylinder filled with heat insulation was used. )

  FIG. 5 is a longitudinal sectional view showing a state in which the upper end of the double chimney of the double chimney combustion appliance is extended in the horizontal direction. In the double chimney combustion apparatus of the present invention, the exhaust fan 4 is provided and forced exhaust is performed. Therefore, as shown in the figure, an extending portion 7 in which the upper end of the double chimney 2 is extended in the horizontal direction can be provided. In the extending portion 7, an inner cylinder 2a as a first exhaust cylinder and an outer cylinder 2b as a second exhaust cylinder are provided. By providing the extending portion 7 as described above, heat can be induced to an arbitrary position in the room, so that even a place partitioned by walls or partitions can be sufficiently heated. Moreover, the extending portion 7 in the horizontal direction can be provided at an arbitrary position, or can be a plurality of bent portions having inner and outer cylinders. Furthermore, the direction of the extending portion 7 is not limited to the horizontal direction.

  FIG. 6 is a longitudinal sectional view showing a state where the upper end of the double chimney 2 of the double chimney combustion appliance, that is, the upper end portion of the inner cylinder 2a as the first exhaust pipe is the bulging portion 8. As shown in the figure, when the upper end portion of the double chimney 2 is enlarged to form the bulging portion 8, the flow rate of the exhaust gas in the bulging portion 8 decreases and flows slowly, so the amount of heat released to the outside air increases. That is, it plays a role of a radiator or a heat radiating fin (heat radiating protrusion). For example, if a double chimney combustion appliance is installed in a high-rise building and the bulging part 8 is formed in the outer cylinder 2b of an arbitrary floor, the outside air at the formed position can be heated at a higher temperature. The bulging portion 8 may be formed on both the first exhaust pipe and the second exhaust pipe.

  FIG. 7 shows the inner cylinder 2a as the first exhaust pipe from the front end of the double chimney 2 of the double chimney combustion apparatus according to the present invention as an exposed extension part 9 extending in the horizontal direction without being exposed. 3 is a longitudinal sectional view showing a state in which a tip communicates with an outer cylinder 2b of a double chimney 2. FIG. In the case of such a configuration, in addition to the effect of the embodiment of FIG. 5, the bare stretched portion 9 does not have a heat insulating heat retaining layer, so that the amount of heat released increases. The bare extending portion 9 can be applied to any position of the double chimney. Furthermore, as shown in FIG. 8, the exposed extending portion 9 can be a plurality of bent extending portions 10.

  The combustion appliance of the present invention is not limited to the above-described embodiment, and each configuration shown in the examples can be arbitrarily combined, and various modifications can be made without departing from the gist of the present invention. It can also be obtained.

  The double chimney combustion appliance of the present invention can be used not only for heating in a building but also for outdoor heating.

It is a longitudinal cross-sectional view which shows one Example of the double chimney combustion appliance of this invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. It is a cross-sectional view showing a different embodiment of the double chimney combustion appliance of the present invention. It is a longitudinal cross-sectional view which shows the state which installed the double chimney combustion appliance of this invention in the multi-story building. It is a longitudinal cross-sectional view which shows the state which extended the upper end of the double chimney of the double chimney combustion instrument of this invention to the horizontal direction. It is a longitudinal cross-sectional view which shows the state which made the upper end of the double chimney of the double chimney combustion instrument of this invention the bulging part. It is a longitudinal cross-sectional view which shows the state which extended | stretched in the horizontal direction with the inner cylinder exposed from the front-end | tip of the double-chimney of the double-chimney combustion instrument of this invention, and connected this front-end | tip to the outer cylinder of a double chimney. It is a longitudinal cross-sectional view which shows the state made into the some bending part which exposed the inner cylinder from the front-end | tip of the double chimney of the double chimney combustion instrument of this invention.

Explanation of symbols

X Combustion equipment Y Outer wall Z Floor on the first floor Z1 Ceiling that divides the first and second floors Z2 Ceiling that divides the second and third floors 1 Combustion section 2 Double chimney 2a Inner cylinder (first exhaust pipe)
2b Outer cylinder (second exhaust cylinder)
3a Exhaust tube (second exhaust tube)
3b Opening 4 Exhaust fan 5 Intake cylinder which is an outer cylinder 5a Stretched extending part of the intake cylinder 6 Double pipe 6a Double pipe partition wall 7 Extending part of the double chimney extending in the horizontal direction 8 Double chimney bulge Part 9 Bare stretched part stretched in the horizontal direction 10 Stripped stretched part with multiple bent stretched parts

Claims (5)

A combustion part in which fuel is combusted, a first exhaust pipe having one end opened in the combustion part and extending upward from the combustion part, and communicated with the other end of the first exhaust pipe, at least partly Has a second exhaust cylinder adjacent to the upwardly extending portion of the first exhaust cylinder and having an exhaust opening, and an exhaust fan provided in the second exhaust cylinder. Chimney burner. The adjacent portion of the first exhaust cylinder and the second exhaust cylinder is a double pipe having an inner cylinder and an outer cylinder, the first exhaust cylinder is an inner cylinder of the double pipe, and the second 2. The double chimney combustion apparatus according to claim 1, wherein the exhaust pipe is an outer cylinder of the double pipe. 2. The double chimney according to claim 1, wherein the adjacent portion of the first exhaust pipe and the second exhaust pipe is a double pipe in which the inside of one pipe is divided by a partition wall. Burning appliances. The double chimney combustion apparatus according to any one of claims 1 to 3, wherein a desired position of the first exhaust pipe is a bulging portion. The double chimney combustion apparatus according to any one of claims 1 to 3, wherein the first exhaust pipe is not adjacent to the second exhaust pipe and has a portion where the entire outer periphery is exposed. .

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