JP3101562B2 - Building exhaust structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a building exhaust structure.

[0002]

2. Description of the Related Art Conventionally, when flue gas discharged from the combustion device is discharged into the outside air, the flue gas is cooled in the outside air to prevent the flue gas from being cooled to the outside air to form white smoke. Is increased by a white smoke prevention device. Specifically, high-temperature air stagnating in the ceiling portion of the building is led to a white smoke prevention device on the first floor via a duct and mixed with the combustion exhaust gas, thereby increasing the temperature of the combustion exhaust gas.

[0003]

However, the above-mentioned conventional exhaust structure for a building has the following problems. The white smoke prevention device is usually provided on the first floor near the lower end of the chimney. Therefore, in order to use the high-temperature air staying near the ceiling of the building as described above, it is necessary to install a suction duct from the first floor to the vicinity of the ceiling. For this reason, the equipment becomes complicated, the installation work of the ducts and the like becomes complicated, and there are inconveniences such as an increase in the initial cost of the equipment.

[0004] It is an object of the present invention to eliminate such drawbacks of the prior art and to provide a building exhaust structure having a rational construction of a white smoke prevention device and excellent building exhaust efficiency.

[0005]

[Means for Solving the Problems]

(Structure 1) A characteristic structure of the building exhaust structure according to the present invention for achieving this object is, as described in claim 1, an upper communicating portion that connects and connects the upper space of the building and the inner space of the outer cylinder. And a lower communication portion for communicating and connecting a white smoke prevention device provided between the combustion device and the inner cylinder and a lower portion of the outer cylinder. (Operation / Effect) As in this configuration, the outer cylinder and the inner cylinder, etc. are originally made only by making a simple improvement by providing an upper communication portion extending between the upper space of the building and the inner space of the outer cylinder. Since the internal space of the outer cylinder used as an inspection passage for inspection can be used as an intake duct of the white smoke prevention device, the white smoke prevention device can be configured extremely reasonably. In addition, since the high-temperature air can be exhausted without using a motor fan or a monitor roof which is conventionally provided to exhaust the high-temperature air staying at the upper part of the building, the building exhaust structure can be efficiently performed. It is also possible to configure it.

(Structure 2) Further, in the building exhaust structure according to the present invention, as described in claim 2, a lower cylinder portion that connects the outer cylinder to the white smoke prevention device and an upper cylinder that communicates with the outside air. Partitioning the upper communication portion with the body portion;
A partition wall for partitioning a passage and a second passage is provided over the upper communication portion and the outer cylinder, and the first passage is communicated with the lower cylinder portion, and the second passage is connected to the upper cylinder. It is also characterized in that it is configured to communicate with the cylindrical portion. (Operation / Effect) As in the present configuration, if the internal space of the outer cylinder is completely shut off up and down, a situation in which outside cool air is sucked into the white smoke prevention device from the opening of the chimney upper end does not occur.
Only the high-temperature air in the upper part of the building can be reliably guided to the white smoke prevention device. On the other hand, the upper space of the building,
Since it communicates with the outside air through a part of the upper communication portion and the internal space of the outer cylinder, the exhaust efficiency is improved when the high-temperature air is simply discharged outdoors. That is, when the upper part of the building and the outer cylinder of the chimney communicate with each other through the upper communication part, the high-temperature air in the building is actively exhausted by natural ventilation. The natural ventilation increases as the temperature of the exhausted building air increases and as the height of the chimney increases. According to this configuration, it is possible to efficiently exhaust the high-temperature building air stagnated in the upper part of the building without using a special exhaust device such as a motor fan. In addition, if attention is paid to the inner cylinder positioned above the partition wall, high-temperature air in the building discharged through the periphery of the inner cylinder will heat the inner cylinder, and As a result, it is expected that the flue gas flowing inside the inner cylinder body is kept warm, and that the flue gas is released to the outside air. As described above, according to this configuration, it is possible to more rationally prevent the emission of white smoke from the combustion exhaust gas, and to improve the exhaust efficiency in the building. Furthermore, even when the height of the building is restricted by height restrictions or the like, a space for providing a motor fan or a monitor is unnecessary, so that the space inside the building can be effectively used. In addition, the design of the exterior view of the building is not impaired.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The building exhaust structure of the present invention is intended for, for example, a building 1 such as a factory or an incinerator, in which a combustion device 2 or the like is installed inside.
The purpose of the present invention is to rationally configure the white smoke prevention device 4 for the combustion exhaust gas discharged from the fuel cell and efficiently exhaust the high-temperature air staying inside the building 1.
In the building exhaust structure of the present invention, as shown in FIG. 1, the building 1 and the chimney 3 attached to the building 1 are connected to each other by an upper communication part 5 and a lower communication part 6. To the white smoke prevention device 4 provided on the first floor of the building 1 via the upper communication part 5 and the internal space of the chimney 3 and the lower communication part 6. is there.

The chimney 3 comprises an outer cylinder 7 and an inner cylinder 8. The number of the inner cylinders 8 is not limited to one. For example, when a plurality of combustion devices 2 are provided in the building 1, the number of the combustion devices 2 may be provided. These inner cylinders 8 are covered by the outer cylinder 7. The outer cylinder 7 is usually used as a structural body for supporting the inner cylinder 8 or as a decorative member for covering and covering the inner cylinder 8, and further inspecting the inner cylinder 8 and the like. It has a function as an inspection passage 9 for performing the inspection.

The combustion exhaust gas generated by the combustion device 2 is
It is led to the white smoke prevention device 4. The white smoke prevention device 4 is for raising the temperature of the air taken in from the outside and mixing the high-temperature air into the combustion exhaust gas to make the exhaust gas higher. Then, the mixed exhaust gas is discharged into the outside air via the lower communication portion 6 and the inner cylinder 8. The reason why the temperature of the combustion exhaust gas is increased in this way is to prolong the time in which the combustion exhaust gas discharged to the outside air is subsequently cooled to the dew point. Thereby, it is possible to avoid a situation in which the combustion exhaust gas is already turned into white smoke at the time when the exhaust gas is discharged from the tip of the chimney 3 to the outside air.

Usually, as the high-temperature air supplied to the white smoke prevention device 4, high-temperature air staying in the upper space of the building 1 is used. In the case of such a building 1, the temperature of the air near the ceiling often exceeds 40 degrees in summer. If air having a high initial temperature is used, it is possible to reduce the energy required to raise the temperature to a predetermined temperature for mixing and supplying. In the present invention, a space between the outer cylinder 7 and the inner cylinder 8 is used as a duct for sucking high-temperature air from the upper space of the building 1 into the white smoke prevention device 4. The inner space of the outer cylinder 7 is usually used as the inspection passage 9 of the chimney 3. Although not shown, a suction pump is provided in the vicinity of the white smoke prevention device 4, and the high-pressure air of the building 1 is heated by the suction pump to the upper communication portion 5 and the outer cylinder. It is led to the white smoke prevention device 4 through the internal space of the body 7 and the lower communication portion 6. Thereby, the conventional building 1
The duct provided inside the building 1 from the upper space to the white smoke prevention device 4 can be omitted, and the configuration of the white smoke prevention device 4 can be simplified.

As shown in FIG. 1, by dividing the outer cylinder 7 into an upper cylinder 10 and a lower cylinder 11, the efficiency of the white smoke prevention device 4 can be further increased. Specifically, it is a partition wall that partitions the outer cylinder 7 into an upper cylinder 10 and a lower cylinder, and at the same time, the interior of the upper communication section 5 is divided into a first passage 12 and a second passage 13. Partition wall 14
Is provided over the outer cylinder 7 and the upper communication portion 5. In this case, the first passage 12 is connected to the lower cylindrical body 11
And the second passage 13 is communicated with the upper cylindrical body 10. Thereby, a passage from the upper space of the building 1 to the white smoke prevention device 4 via the lower tubular body 11 and the outside air from the upper space of the building 1 via the upper tubular body 10. The passage to be reached is configured independently. That is, when the suction pump of the white smoke prevention device 4 operates, it is possible to prevent a situation in which low-temperature outside air enters through the inside of the outer cylinder 7. Therefore, only the high-temperature air of the building 1 can be reliably sucked into the white smoke prevention device 4, and it is possible to guide the white smoke prevention device 4 to the white smoke prevention device 4 while maintaining the air in the building 1 at a high temperature. Becomes

On the other hand, even when the high-temperature air staying in the building 1 is simply exhausted, the building exhaust structure of the present invention exhibits excellent functions and effects. That is, when the high-temperature air is discharged through the chimney 3, efficient exhaust is performed by the natural ventilation force of the chimney 3. The natural ventilation force is such that the higher the temperature of the gas to be discharged and the higher the height of the outer cylinder 7, the more the cross-sectional area of the space sandwiched between the outer cylinder 7 and the inner cylinder 8. Is larger. Therefore, if the chimney 3 is appropriately designed according to the capacity of the internal space of the building 1 or the assumed maximum indoor temperature, the best exhaust efficiency can be obtained.

In addition, if attention is paid to the inner cylindrical body 8 in the upper cylindrical body part 10, the high-temperature air of the building 1 discharged through the periphery of the inner cylindrical body 8 will cause the inner cylindrical body 8 to pass through. As a result, the combustion exhaust gas flowing through the inside of the inner cylinder 8 is kept warm, and it is expected that the combustion exhaust gas has an effect of preventing white smoke from being emitted to the outside air.

As described above, with this configuration, it is possible to more rationally prevent the flue gas of the combustion exhaust gas from becoming white smoke, and the exhaust efficiency in the building 1 is also improved. Further, when the high-temperature air of the building 1 is simply discharged, the chimney 3 is used, so that a space for providing a motor fan or a monitor is unnecessary, and if the height of the building 1 is limited by the height. The space in the building 1 can be effectively used even when the space is regulated by the above. The design of the exterior of the building 1 is not impaired.

[Another Embodiment] <1> As shown in FIG. 1, the upper communication section 5 can be configured by providing first opening and closing mechanisms 15A and 15B.
For example, if the first opening / closing mechanisms 15A and 15B are closed to retain the high-temperature air in the building 1, it can be used as heating for the equipment in the building 1 or for equipment attached to the building 1. It becomes possible. <2> An inspection passage 9 </ b> A can be provided inside the upper communication portion 5. With this configuration, the intermediate portion of the chimney 3 and the building 1 can be moved back and forth, and it is not necessary to perform the inspection work inside the outer cylinder 7 from the lower end portion of the chimney 3 without fail. Efficiency is improved. <3> A second opening / closing mechanism 16 is provided on the partition wall 14. As described above, the inspection passage 9 is provided inside the outer cylinder 7, and the operator passes through the second opening / closing mechanism 16 to connect the upper cylinder 10 and the lower cylinder 11 to each other. Can come and go.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a building exhaust structure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Combustion device 3 Chimney 4 White smoke prevention device 5 Upper communication part 6 Lower communication part 7 Outer cylinder 8 Inner cylinder 10 Upper cylinder part 11 Lower cylinder part 12 1st passage 13 2nd passage 14 Partition wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E04H 12/28 E04H 5/02 F23G 5/00

Claims (2)

(57) [Claims] An outer cylinder (7) covers an inner cylinder (8) that is provided adjacent to a building (1) in which a combustion device (2) is installed and that discharges combustion exhaust gas from the combustion device (2). For the chimney (3) having a structure, an upper communication part (5) for connecting and connecting the upper space of the building (1) and the inner space of the outer cylinder (7) is provided, and the combustion device (2) And a lower communication portion (6) for communicating and connecting the white smoke prevention device (4) provided between the inner cylinder (8) and the lower portion of the outer cylinder (7). Building exhaust structure. 2. The outer cylinder (7) is partitioned into a lower cylinder (11) communicating with the white smoke prevention device (4) and an upper cylinder (10) communicating with the outside air, and A partition wall (14) that partitions the inside of the upper communication portion (5) into a first passage (12) and a second passage (13) extends across the upper communication portion (5) and the outer cylinder (7). The first passage (12) communicates with the lower tubular body (11), and the second passage (13) communicates with the upper tubular body (10). Building exhaust structure as described.