KR200219176Y1 - Backflow inflow prevention cap for boiler flue - Google Patents

Abstract

The present invention relates to a backflow inflow prevention cap for the boiler flue, the primary cone (12) is formed on the front so that the combustion gas is smoothly discharged without the inflow of the reverse wind even when the backwind is blown and the circumference of the primary cone (12) In the rear, a plurality of primary exhaust holes 11 are formed radially along the longitudinal direction, and on the rear side, the exhaust and exhaust pipe coupling portions 26 to which the exhaust pipe 42 and the air supply pipe 44 inside the flue 40 are coupled. In the back flue prevention cap for the flue of the boiler flue formed, the secondary cone 22 is formed outside the rear of the primary exhaust hole 11 around the primary cone 12, the secondary cone 22 At the rear of the circumference, a secondary exhaust hole 21 is formed, and at the rear of the secondary exhaust hole 21, an air supply pipe coupling part 24 to which an air supply pipe 44 outside the flue 40 is coupled is formed. In addition, an exhaust pipe coupling portion 26 is formed concentrically with the air supply pipe coupling portion 24 inside the air supply pipe coupling portion 24. On the other hand, it effectively blocks backflow, providing a backflow inflow cap for boiler flue that is suitable for windy areas.

Description

Backflow inflow prevention cap for boiler flue

The present invention relates to a cap for influx of backwind for boiler flue, and particularly to prevent inflow of backwind, which is likely to occur in windy areas such as coastal or mountainous regions, and to improve the emission efficiency of combustion gases generated in boilers. It is an improvement of the anti-backflow cap structure

Conventional techniques for the anti-backflow inflow cap used to be attached to the boiler of both supply and exhaust include Utility Model Registration Application No. 95-35793 and Patent Application No. 96-17838 of the present applicant. As shown in FIG. 8, the prevention cap 1 is formed with a corn-shaped windshield 2 at the front, and a plurality of radially radially along the longitudinal direction to the circumferential rear of the windshield 2. Two exhaust holes (3) are formed, and at the rear, the exhaust pipe (5) inside the flue (4) and the external air supply pipe (6) is coupled to the structure consisting of the combination of the exhaust pipe (7, 8) This prevents the wind blowing in front of the cap by the front windshield 2 from flowing back into the exhaust pipe 5, and at the same time, the exhaust hole 3 formed in the longitudinal direction on the outer circumferential rear of the windshield 2; ), The combustion gas of the boiler (not shown) was discharged to the outside.

On the other hand, the conventional anti-wind inflow cap has an effective structure in terms of preventing the inflow of the back wind, but the cross-sectional area of the exhaust hole has a relatively small disadvantage that the combustion gas burned in the boiler is not effectively discharged, this exhaust There is a problem that noise and vibration are generated when exhaust gas is not exhausted quickly in the empty part, and when the flue is installed through a window, noise is amplified and the surroundings of the boiler room are disturbed. There was a downside.

The present invention has been devised in view of the above-mentioned conventional problems, and an object of the present invention is to effectively block the inflow of outside air and to increase the exhaust efficiency of the exhaust gas by forming a large cross-sectional area of the exhaust hole, thereby exhausting the exhaust gas. It is to provide a backflow inflow prevention cap of the structure that can solve the noise problem generated during the.

In order to achieve the above object, the present invention is mounted on the front end of the flue for both exhaust and exhaust boilers, and a cone is formed on the front side to prevent the inflow of wind from the front and side, and the rear of the circumference of the cone A plurality of exhaust holes are formed radially along the longitudinal direction, the back of the exhaust circumference around the cone in the back of the exhaust circumference cap in the boiler flue formed in the rear, the exhaust pipe and the exhaust pipe coupling portion to the exhaust pipe and the exhaust pipe inside the flue A secondary cone for preventing the counterwind is formed on the outside, and a secondary exhaust hole is formed at the rear of the circumference of the secondary cone for the discharge of combustion gas, and an air supply pipe outside the flue is formed at the rear of the secondary exhaust hole. An air supply pipe coupling part to be coupled is formed, and inside the air supply pipe coupling part, a backflow inflow prevention for boiler flue in which an exhaust pipe coupling part is formed concentrically with the air supply pipe coupling part. By providing the wind from the front and side of the cap is prevented from entering the exhaust pipe by hitting the primary cone and the rear secondary cone, the exhaust gas discharged from the boiler is exhaust exhaust formed around the cone of the tip It is to be discharged smoothly through the secondary exhaust hole formed around the ball and the secondary cone.

In addition, the present invention forms a coupling rib in close contact with the inner diameter and the outer diameter of each exhaust pipe so as to be compatible with the two kinds of exhaust pipes having different diameters formed in the rear of the cap to correspond to the inner and outer.

1 is a perspective view of the anti-wind inflow prevention cap according to the present invention.

Figure 2 is a side view of the backflow inflow prevention cap according to the present invention.

3 is a front view of the anti-air inflow prevention cap according to the present invention.

4 is a rear view of the anti-wind inflow prevention cap according to the present invention.

Figure 5 is a longitudinal cross-sectional view of the anti-wind inflow prevention cap according to the present invention.

Figure 6 is an installation state of the backwind inflow prevention cap according to the present invention.

Figure 7 is a state of operation of the anti-wind inflow cap according to the present invention.

8 is a cross-sectional view showing the applicant's conventional invention.

* Explanation of symbols for main parts of the drawings

10: small diameter portion 11: primary exhaust hole

12: 1st cone 20: large diameter part

21: secondary exhaust hole 22: secondary cone

23: cylindrical portion 24: air supply pipe coupling portion

26: exhaust pipe coupling portion 30: rib

32: inner rib 34: outer rib

40: year

1 is a perspective view showing a backflow inflow prevention cap structure for the flue boiler according to the present invention, 2 to 4 are side views, front views and rear views of the cap, respectively, and FIG. 5 is a longitudinal cross-sectional view.

As shown, the present invention has a structural feature formed in two stages of the exhaust hole for the discharge of the combustion gas and the cone for the wind block.

That is, the exhaust hole includes a primary exhaust hole 11 formed around the tip of the small diameter portion 10 and a secondary exhaust hole 21 formed radially around the tip of the large diameter portion 20.

In addition, the reverse wind cone is a strip-shaped secondary cone having a coronal primary cone 12 at the tip of the small diameter portion 10 and a “과” cross-sectional shape formed at the edge of the large diameter portion 20. It consists of 22.

Preferably, the diameter of the small diameter portion 10 is formed to have a dimension substantially equal to the diameter of the exhaust pipe inside the flue, and the large diameter portion 20 is preferably formed to have a dimension matching the diameter of the supply pipe outside the flue. In this way, when viewed from the front, the primary cone 12 and the secondary cone 22 are exactly overlapped, and the backwind blowing from the front or oblique direction of the cap hits the primary cone 12 and the secondary cone 22. It is possible to completely block backflow into the exhaust pipe, and the surface inclination of the primary cone 12 and the surface inclination of the secondary cone 22 are also formed at the same angle so that the reverse wind is reflected at the same angle.

The depth of the primary cone 12 is formed deeper than the primary exhaust hole 11 around the small diameter portion 10 side, the base portion 12a of the primary cone 12 is located behind the small diameter portion 10. The inner side of the cylindrical portion 23 forming the secondary cone 22 is positioned inside.

The base portion of the secondary cone 22 is not deeper than the rear end of the secondary exhaust hole 21 outside the large diameter portion 20 so that the exhaust gas can be discharged to the secondary exhaust hole 21 when the rear exhaust pipe is coupled. In the rear of the secondary exhaust hole 21, an air supply pipe engaging portion 24 having an outer diameter corresponding to the internal air supply pipe diameter of the flue is formed.

The primary cone 12, the secondary cone 22, and the air supply pipe coupling part 24 are integrally connected to each other by the plurality of ribs 30 radially formed in the longitudinal direction and supported therein. The rear end of the 30 is formed with an exhaust pipe coupling portion 26 that is coupled to the exhaust pipe in the year.

The exhaust pipe coupling portion 26 has an inner rib 32 formed to match the inner diameter of the exhaust pipe having a small diameter (for example, 70 mm) so as to be compatible with two kinds of exhaust pipes having different dimensions, and the inner rib 32. The outer ribs are formed to be spaced apart from each other at regular intervals, and the inner diameter of the outer ribs 34 is formed to match the outer diameter of the exhaust pipe having a relatively large diameter (eg, 75 mm).

As shown in FIG. 6, the anti-backflow inflow cap of the present invention configured as described above is used to be mounted at the tip of the intake / exhaust boiler flue 40. In FIG. 6, a relatively small diameter (for example, 70 mm) is used. Although the inner exhaust pipe 42 having the state shown coupled to the exhaust pipe coupling portion 27 of the rear end of the cap, the present invention can of course combine a relatively large exhaust pipe having a diameter of 75mm.

That is, the present invention has a relatively large diameter because the exhaust pipe coupling portion 26 at the rear end of the cap is formed with the inner rib 32 and the outer rib 34 formed to be spaced apart by a predetermined distance to the outside of the inner rib 32. The exhaust pipe 42 may be coupled to the outside of the tip tightly to the inside of the outer rib 34, and the exhaust pipe having a relatively small diameter may be forced to couple the inside of the tip to the outside of the inner rib 32. will be.

On the other hand, the air supply pipe 44 outside the flue 40 is shrink-flipped the end portion thereof in the state that the tip is fitted to the outside of the air supply pipe coupling portion 24 of the rear end of the large diameter portion 20 so that the cap does not fall out. A donut-shaped sealing member 46 is inserted between the exhaust pipe 42 and the air supply pipe 44 of the year to maintain the gap and to support each other, and discharges the reverse wind introduced around the tip of the air supply pipe 44. Reverse wind outlet 47 is formed.

Figure 7 schematically shows a state in which the intake and exhaust of the boiler is made through the flue combined with the cap of the present invention, the description of the intake and exhaust in the normal state that the wind is not blown, and the backwind here This part shows the state of intake and exhaust in the state, the arrow shown by the solid line shows the flow of outside air to the inlet port 45 around the air supply pipe 44, the air necessary for the combustion of the boiler is sucked in, The backwind blowing to the front of the cap strikes the primary cone 12 and the secondary cone 22 and diffuses back into the air, and the combustion gas of the unillustrated boiler discharged through the exhaust pipe 42 is shown by the dotted line. It is shown to be discharged to the outside through the primary exhaust hole 11 of the small diameter portion 10 and the secondary exhaust hole 21 of the large diameter portion 20.

In the present invention, since the primary cone 72 and the secondary cone 22 completely block the exhaust pipe 42 against the wind blowing from the front, the primary cone 72 and the secondary cone 22 can effectively block the inflow of the reverse wind, and the combustion gas is the primary cone. Since it flows to the outside accompanied by the reverse wind flow hitting the 12 and the secondary cone 22, it is prevented from entering the exhaust pipe 42 again, and after hitting the primary cap 12 and the secondary cap 22, Exhaust gas is discharged along the reverse wind flow, so that normal discharge is possible even during the reverse wind.

The present invention forms a secondary cone on the outside of the exhaust hole around the primary cone, and a secondary exhaust hole is formed on the circumferential rear of the secondary cone so that the reverse wind blowing from the front and oblique directions of the cap is 1 It is prevented from entering the exhaust pipe by colliding with the secondary cone and the secondary cone, and the combustion gas discharged from the boiler is effectively discharged through the exhaust hole formed around the primary cone of the tip and the secondary exhaust hole formed around the secondary cone. In this case, the combustion gas of the boiler is quickly discharged and combustion is normally performed inside the boiler. At the same time, the exhaust hole has a large cross-sectional area so that noise and vibration problems do not occur. It is composed of a structure that can selectively combine the exhaust pipe of the different size with one cap Can also be used in the year of the group, it is particularly suitable for use with the wind constantly blowing mounted on many mountainous areas and the intake and exhaust combined boiler flue in the coastal province of.

Claims (2)

A primary cone is formed on the front side, and a plurality of primary exhaust holes are formed radially along the longitudinal direction to the rear of the circumference of the primary cone. In the formed boiler flue backflow inflow prevention cap, the secondary cone 22 which has a "∠" cross-sectional shape is formed in the rear outer side of the said primary exhaust hole 11, and the A secondary exhaust hole 21 is formed at the rear of the circumference, and an air supply pipe coupling portion 24 to which the air supply pipe 44 outside the flue 40 is coupled to the rear of the secondary exhaust hole 21 is provided. And an exhaust pipe coupling portion (26) formed concentrically with the air supply pipe coupling portion (24) inside the air supply pipe coupling portion (24). The exhaust pipe coupling portion 26 is formed with a plurality of inner ribs 32 formed so that the outer diameter thereof matches the inner diameter of the exhaust pipe having a small diameter, and formed to be spaced apart from the inner ribs 32. Backflow inflow prevention cap for boiler flue characterized in that the inner diameter consists of an outer rib 34 formed to match the outer diameter of the exhaust pipe having a relatively large diameter.