KR20090007014A - Duct assembly for a flue - Google Patents

Abstract

A duct assembly for a flue is provided to install the duct assembly simply by installing sound-absorbing cases and sound-absorbing members side by side with the inner pipes within inner pipes, and to reduce mis-operation of the sound-absorbing members by reducing the amount of water absorbed into the sound-absorbing members. A duct assembly(100) for a flue comprises: a plurality of inner pipes(110) which are successively connected to one another to flow and exhaust combustion gas through the connected inner pipes; sound-absorbing cases(120) which are fixedly installed such that the sound-absorbing cases are parallel to the inner pipes in the longitudinal direction, and which have a plurality of sound-absorbing holes(121) formed along circumferential surfaces thereof; sound-absorbing members(130) installed within the sound-absorbing cases to absorb sound generated from the inner pipes; and fixing members(140) respectively fixed to outer peripheral surfaces of the sound-absorbing cases and inner peripheral surfaces of the inner pipes to install the sound-absorbing cases in the center of the inner pipes.

Description

Duct assembly for flue {DUCT ASSEMBLY FOR A FLUE}

The present invention relates to a flue duct assembly, and more particularly to an improved flue duct assembly for effectively removing and preventing noise generated in the duct assembly.

For example, a flue duct system is installed in a large building such as an apartment or a factory to discharge the combustion gas generated from these buildings is schematically shown in FIG.

Referring to Figure 1, in general, the combustion gas or exhaust gas generated by the operation of the boiler 7 in the building to be discharged to the outside of the building through the duct assembly (1, 2) consisting of a plurality of connected.

The duct assembly 1, 2 has a horizontal duct assembly 1 and a vertical duct assembly 2 depending on the installation state. Typically the horizontal duct assembly 1 and the vertical duct assembly 2 are combined to form a flue duct system as shown in FIG. 1.

And the fixed support (4,8) is fixed to the horizontal duct assembly 1 and the vertical duct assembly (2) to support the horizontal duct assembly (1) and the vertical duct assembly (2) do.

In FIG. 1, reference numeral 3 denotes a stack cap, reference numeral 5 denotes a check hole for inspecting the inside of the duct assembly 2, and reference numeral 9 denotes a duct assembly. An expansion valve installed on one side of the duct assembly 2 to vary the length of (2).

The configuration of the horizontal duct assembly 1 and the vertical duct assembly 2 is almost the same as will be described later.

Therefore, in FIG. 2, for example, the configuration of the vertical duct assembly 2 of the duct assemblies 1 and 2 of FIG. 1 will be described.

Referring to FIG. 2, the duct assembly 2 includes an inner tube 2b, an inner tube connecting band 2e used to couple the upper and lower flanges of the inner tube 2b, and the inner tube. The outer tube 2a is formed to surround the outer circumferential surface of the inner tube 2b, and an outer tube connecting band 2d is installed to couple the outer tube 2a.

In addition, after the inner tube connecting band 2e is fastened to the duct assembly 2, a sealant 2f is filled to increase coupling force or maintain airtightness. And a spacer 2c provided between the inner and inner tubes to support them and at the same time maintain their spacing constant.

The flue duct assemblies 1, 2 as described above are generally made of stainless steel with good corrosion resistance.

By the way, since the duct assembly (1, 2) is not provided with a noise reduction function, there is a problem that the noise generated by the equipment noise of the machine room connected to the year is directly transmitted.

In order to improve this problem, as shown in FIGS. 3 and 4, a plurality of sound absorbing holes 11a are formed, and a sound absorbing inner cylinder 11 having flange portions 11b and 12a formed at upper and lower ends thereof, and the sound absorbing inner cylinder 11. A heat-insulating inner cylinder 12 having the flange portions 11b, 12a spaced concentrically and spaced apart from the outside thereof and fixed to the flange portions 11b, 12a of the sound-absorbing inner cylinder 11, and the sound-absorbing inner cylinder 11 ) And an exhaust gas composed of a heat insulating member 14 filled between the heat insulating inner cylinder 12 and an outer cylinder 13 spaced apart from the outside of the heat insulating inner cylinder 12 and fixed concentrically by a plurality of spacers 15. Exhaust flue assembly 10 is designed.

The flue gas exhaust assembly 10 configured as described above is disclosed in Korean Patent No. 0728137.

3 and 4, the prior art as described above, the sound absorbing inner cylinder 11 is provided with a predetermined space on the inner wall surface of the heat insulating inner cylinder 12, the heat insulating member 14 in all of the space. ).

Thereby, by providing the heat insulating member 14 in all the inner wall surfaces of the said heat insulation inner cylinder 12, work is difficult and manufacturing cost is expensive.

As described in the related art, water flowing to the inner wall of the flue is absorbed into the heat insulating member 14 through the sound absorbing hole by condensation or rainwater introduced from the outside, thereby minimizing leakage.

However, since the heat insulating member 14 is installed on the entire inner wall surface of the heat insulating inner cylinder 12, it occurs in the rainwater flowing through the inner wall surface of the heat insulating inner cylinder 12 and the inner wall surface of the heat insulating inner cylinder 12. As the heat insulating member 14 continuously absorbs the condensation water due to condensation, the heat insulating member 14 is likely to be lost, and the function of the noise effect and the heat insulating effect is lost. In addition, when the heat insulating member 14 absorbs a lot of moisture, the weight of the heat insulating member 14 is increased, so that the sound absorbing inner cylinder 11 and the heat insulating member 14 may be separated from the heat insulating inner cylinder 12. If this problem is even worse, the heat insulating inner cylinder 12 coupled with the sound absorbing inner cylinder 11 may be dismantled.

In addition, by fixing the sound absorbing inner cylinder 11 and the flange portions 11b and 12a formed at the outer upper and lower ends of the insulating inner cylinder 12, repair work due to the loss of the insulating member is difficult, and a large amount of the insulating member 14 is provided. ), And repair costs are high due to the difficulty of repair work.

In particular, as described with reference to Figure 1, in the case of the horizontal duct assembly of the duct assembly, the above-described problem may occur even more serious because of the horizontal installation.

The present invention has been created to solve the above problems, the installation and production is simple to provide a low cost installation and maintenance and maintenance costs, to provide a flue duct assembly for the noise effect is continuously maintained. There is a purpose.

The flue duct assembly of the present invention for achieving the above object, and the inner tube is provided so that a plurality of continuously coupled to the combustion gas flows out; A sound absorbing case fixedly installed in the center of the inner tube in parallel to the inner tube in a longitudinal direction and having a plurality of sound absorbing holes formed along a circumferential surface thereof; A sound absorbing member installed in the sound absorbing case to absorb sound generated from the inner tube through the sound absorbing hole; And a fixing member fixed to the outer circumferential surface of the sound absorbing case and the inner circumferential surface of the inner tube to fix the sound absorbing case to the center of the inner tube.

According to an embodiment of the present invention, by installing a sound absorbing case and a sound absorbing member in the center of the inner tube in parallel with the inner tube, the installation is very simple, compared to the existing, the condensation water caused by the condensation phenomenon generated on the inner wall surface, the inner wall surface It is less affected by the rainwater flowing through the air, so that the moisture absorbed in the sound absorbing member is significantly less than that of the existing can significantly reduce the loss of the sound absorbing member, and can maintain the noise effect continuously.

And while the conventional sound-absorbing means is installed on the entire inner surface of the inner tube inner surface, in the present invention is installed only in the center of the inner tube, the weight is lighter than the conventional, it does not affect the inner tube, etc. by weight, manufacturing and installation It is simple and the manufacturing and installation cost is much lower than the existing one.

In addition, the replacement of the sound absorbing member is easy, and low maintenance costs.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a partially exploded perspective view showing the configuration of the flue duct assembly according to the present invention, Figure 6 is a cross-sectional view of the flue duct assembly according to the present invention, Figure 7 is a plan view of FIG. It is.

Prior to the description, the configuration of the general flue duct assembly will be described with reference to FIGS. 1 and 2 described above, and only the characteristic configuration according to the present invention will be described in detail.

Referring to each of these drawings, the flue duct assembly according to the present invention, the inner tube is provided with a flange 111 at the upper end and the lower end so that a plurality of continuously coupled to the combustion gas or exhaust gas flows through the inside ( 110, a sound absorbing case 120 fixedly installed side by side in the longitudinal direction with the inner pipe 110 in the center of the inner pipe 110, and formed with a plurality of sound absorbing holes 121 along the circumferential surface; The sound absorbing member 130 which is installed in the 120 and absorbs the noise generated by the inner tube 110 through the sound absorbing hole 121, and the outer circumferential surface of the sound absorbing case 120 and the inner tube 110, respectively. It is fixed to the inner circumferential surface is configured to include a fixing member 140 is fixed to the sound absorbing case 120 is installed in the center of the inner tube (110).

The sound absorbing case 120 is preferably made of a cylindrical in order to effectively absorb the noise in the inner tube 110 and ease of manufacture and installation.

The lower end of the sound-absorbing case 120 is closed, the upper end is formed to be open, the open upper end is opened or closed by a cap member 122 capable of opening and closing. Therefore, since the sound absorbing case 120 is made of a cylindrical shape, the cap member 122 is also made of a cylindrical shape and thus is easy to manufacture.

In addition, the sound absorbing case 120 and the cap member 122 are provided with a connection member 123 having both ends connected to the sound absorbing case 120 and the cap member 122 to integrate them. The connecting member 123 may be made of a flexible spring plate or may be provided in a hinged form. Therefore, the connection member 123 is a cap member 122 is integral to the sound absorbing case 120, so that the cap member 122 is not lost, and is easy to open and close, but is not limited to any form.

In addition, the fixing member 140 is made of a bar (bar) type, both ends are fixed by welding. Accordingly, reference numeral 'W' in FIGS. 5 to 7 shows a welded portion.

However, the fixing member 140 is not limited to a specific fixing method, and may also be fastened by a bolting method according to the shape of the fixing member 140, and fixed to the sound absorbing case 120 and the inner tube 110. May be

A plurality of fixing members 140 are radially fixed to the upper end and the lower end of the sound absorbing case 120.

6 and 7, the fixing member 140 is radially installed at four upper and lower positions, respectively, but is not limited thereto. The fixing position and number is determined according to the shape or fixing method of the fixing member 140.

In addition, the sound absorbing case 120 is installed one by one in the inner tube (110). That is, when a large number of inner tubes 110 are coupled to each other against the flange 111 to form a flue duct system, the sound absorbing case 120 is one inner tube 110, as shown in FIG. One may be installed in the sound absorbing case 120, or may be installed to increase the length of the sound absorbing case 120 in a plurality of inner tube (110). However, in consideration of ease of manufacture, it is preferable to install one sound absorbing case 120 in one inner tube 110.

And the sound absorbing member 130 is preferably made of a heat resistant ceramic heat insulating member. However, the sound absorbing member 130 is not limited to a specific material as long as it is a heat resistant heat insulating material and can absorb noise.

Referring to the operation of the flue duct assembly according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, as described above, the fluid of the combustion gas or exhaust gas flows, and together with the passage for transmitting the noise generated by the operation of each element, for example, the boiler (see 7 in FIG. 1). By the inner tube 110 of the flue duct assembly, noise is always generated in the inner tube 110.

In order to effectively prevent such noise, the sound absorbing case 120 having a plurality of sound absorbing holes 121 formed side by side in the longitudinal direction in the center of the inner tube 110 is fixedly installed, and through the sound absorbing hole 121 therein. Sound absorbing member 130 for absorbing the incoming noise is installed. In addition, a bar type is formed on the outer circumferential surface of the sound absorbing case 120 and the inner circumferential surface of the inner tube 110, and a plurality of fixing members 140 welded at both ends thereof are radially installed to absorb the sound absorbing case 120. ) To be fixed and supported in the center of the inner tube (110).

Therefore, the noise generated by the inner tube 110 may be absorbed by the sound absorbing case 120 and the sound absorbing member 130 installed in the center of the inner tube 110 to remove the noise.

And conventionally, as described above with reference to Figures 3 and 4, after all the heat insulating member 14 is installed on the inner circumferential surface of the heat insulating inner cylinder 12, the installation work by installing the heat insulating inner cylinder 12 on the outside and It was difficult to make. In addition, the installation of the noise prevention or removal means by fixing the flange portion (11b, 12a) of the heat insulating inner cylinder 12 and the sound absorbing inner cylinder 11 has been required for precise installation work.

However, in the present invention, since the sound absorbing case 120 is manufactured separately from the inner tube 110, the sound absorbing case 120 may be easily manufactured. In addition, in the present invention, after the separate sound-absorbing case 120 is simply welded and fixed to the fixing member 140, the sound absorbing member 130 is inserted into and installed. Therefore, the sound absorbing member 130 does not need to be precisely installed in the sound absorbing case 120 because the sound absorbing case 120 does not need to be installed inside the sound absorbing case 120.

That is, the sound absorbing member 130 may be installed after the sound absorbing case 120 is fixedly installed in the center of the inner tube 110, and then opens the cap member 122 of the sound absorbing case 120.

Therefore, even if the sound absorbing case 120 is installed in the center and condensation water is generated on the inner wall surface of the inner tube 110, rain water is absorbed into the sound absorbing material 130 without being affected by the sound absorbing member 130. If this becomes difficult, the cap member 122 may be opened to easily replace the sound absorbing member 130.

And the plurality of fixing members 140 for fixing the sound absorbing case 120 is radially installed in the inner tube 110, it is possible to prevent the risk of falling into the inner tube 110, for example when installing the duct assembly.

As described above, the present invention has been described with reference to one embodiment shown in the drawings, but this is only an example, and those skilled in the art may make various modifications and equivalent embodiments therefrom. Will understand. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a schematic view schematically showing the configuration of a typical flue duct system.

FIG. 2 is a cross sectional view showing the configuration of the flue duct assembly of FIG. 1 in more detail; FIG.

Figure 3 is a partial cross-sectional view schematically showing the configuration of the flue duct assembly according to the prior art.

4 is a cross-sectional view taken along the line A-A of FIG.

Figure 5 is a partially exploded perspective view showing the configuration of the flue duct assembly according to the present invention.

Figure 6 is a cross-sectional view showing the configuration of the flue duct assembly according to the present invention.

7 is a plan view of FIG.

<Description of the symbols for the main parts of the drawings>

110. Inner tube

111.Flanges

120. Sound absorption case

121. Sound absorption hole

130. Sound-absorbing member

140. Fastening members

Claims (8)

An inner tube provided to continuously couple a plurality of combustion gases to flow and be discharged; A sound absorbing case fixedly installed in the center of the inner tube in parallel to the inner tube in a longitudinal direction and having a plurality of sound absorbing holes formed along a circumferential surface thereof; A sound absorbing member installed in the sound absorbing case to absorb sound generated from the inner tube through the sound absorbing hole; And a fixing member fixed to the outer circumferential surface of the sound absorbing case and the inner circumferential surface of the inner tube to fix the sound absorbing case to the center of the inner tube. The method of claim 1, The sound absorbing case is a flue duct assembly, characterized in that consisting of a cylindrical. The method of claim 2, The lower end of the sound absorbing case is closed, the upper end is made open, the duct assembly for the flue characterized in that the open upper end is opened or closed by a cap member that can be opened and closed. The method of claim 1, The sound absorbing case and the cap member is a duct assembly for the flue characterized in that the coupling member is connected to both ends of the sound absorbing case and the cap member to integrate the sound absorbing case and the cap member. The method of claim 1, The fixing member is a bar (bar) type, the flue duct assembly, characterized in that both ends are fixed by welding. The method of claim 1, The fixing member is a duct assembly for the flue characterized in that a plurality of radially fixed to the upper end and the lower end of the sound absorbing case. The method of claim 1, The sound absorbing case is a flue duct assembly, characterized in that installed one by one in the inner tube. The method of claim 1, The sound absorbing member, the flue duct assembly, characterized in that it comprises a heat-resistant ceramic insulating member.

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