KR100220025B1 - Smoke pipe for f.f type boiler - Google Patents

Abstract

According to the present invention, the exhaust gas generated in the boiler body is quickly discharged to the outside through the exhaust gas discharge passage, and the air required for combustion of the boiler can be sufficiently supplied outdoors through the air supply inlet passage, and the exhaust gas is discharged. The present invention relates to a flue for a FF boiler that prevents the inflow of back wind into the exhaust hole. The exhaust gas is rapidly discharged to the front end of the inner cylinder 130 and the outer cylinder 100 of the FF boiler while the reverse wind flows into the flue. Combine the boiler flue cap (C) to prevent inflow, this boiler flue cap (C) is formed on the outer circumferential surface of the inner circumferential wall 12 by forming an inner circumferential wall (12) in the interior of the outer circumferential wall (10) The inner cylinder 130 is coupled, and the air supply inflow passage 120 between the inner cylinder 130 and the outer cylinder 100 is sealed by a shielding plate 20 disposed in an upper direction of the inner circumferential wall 12, Front of inner circumferential wall 12 The front windshield 14 is formed in a V-shape, and the front windshield 14 quickly discharges the exhaust gas to the outside while the flow velocity of the exhaust gas is increased. The reverse wind discharge hole 30 formed in the upper direction of the inner circumferential wall 12 is to improve the efficiency of the boiler by being partially discharged back wind to the outside through the exhaust hole 28.

Description

Flue for F.F type boiler

1 is a front view of the flue for the F.F boiler according to the present invention,

2 is a combined cross-sectional view of the flue for the F.F boiler according to the present invention,

3 is a perspective cutaway view of the boiler flue cap applied to the F.F boiler flue according to the present invention,

4 is a partial cutaway perspective view showing a state in which the boiler flue cap coupled to the tip of the F.F boiler flue according to the present invention,

5 is an enlarged cross-sectional view of the F. F boiler according to the invention the enlarged state of the flue,

6 is a use state diagram showing a state that the flue for the F.F type boiler according to the present invention is applied to the boiler body,

FIG. 7 (a) shows a state in which external air is supplied and exhaust gas is exhausted through a supply / exhaust hole of a flue for a F.F boiler according to the present invention;

(b) is a state diagram showing a state in which a reverse air flow into the year is blocked by the boiler flue cap applied to the F.F type boiler flue according to the present invention,

8 is a use state diagram showing a state in which the F.F type boiler flue according to the prior art is applied to the boiler body.

* Explanation of symbols for main parts of the drawings

A: F.F type boiler

B: F.F boiler flue according to the conventional draft

C: Cap for boiler flue

L1: Distance between boiler flue cap and air supply hole according to the present invention

L2: Distance between the boiler flue cap and the wall according to the present invention

L3: Distance between the exhaust hole and the supply hole of the boiler year according to the conventional design

L4: Distance between inner end of boiler year and wall according to the conventional draft

10: outer wall 12: inner wall

14: front windbreak wall 16: the outer inclined portion

18: inner inclined portion 20: shielding plate

22: inner cylinder coupling portion 24: inclined surface

26: edge 28: exhaust hole

30 backwind discharge hole 32 incision

34: air supply hole pressed in the main body 36: diaphragm

38: back side 40: space part

100: outer cylinder 110: air supply hole of the conventional F.F boiler

120: air supply inflow passage 130: inner cylinder

140: exhaust hole 150: exhaust gas discharge passage

160: sealing plate 170: connection port

180: connector 190: locking jaw

200: air supply communication 210: exhaust communication

220: sealing groove 230: sealing groove

240: boiler body 250: air inlet pipe

260: exhaust gas discharge pipe 270: fastening band

280: wall 290: distal end

The present invention relates to a flue for the FF boiler, more specifically, the exhaust gas generated in the boiler body to be quickly discharged to the outside through the exhaust gas discharge passage, and the air required for the combustion of the boiler to supply the air supply inlet passage The present invention relates to a flue for a FF type boiler that can be sufficiently supplied outdoors and prevents backwind from flowing into an exhaust hole through which exhaust gas is discharged.

Conventional boiler flue, especially FF type (forced / exhaust) boiler flue, combines the outer cylinder to allow the air for fuel combustion to enter the boiler and the inner cylinder to discharge the exhaust gas generated during fuel combustion. It is in the form of

That is, as illustrated in FIG. 8, the outer cylinder 100 having a plurality of air supply holes 110 formed at a predetermined end space at one end thereof has a sealing groove 220 and 230 formed at both inner surfaces thereof. The outer circumferential surface is coupled to each other, and the inner circumference of the sealing grooves 220 and 230 is fitted with an inner cylinder in which an exhaust hole 140 is formed on one side of the outer circumferential surface to discharge the exhaust gas, thereby fitting the inner cylinder 130 and the outer cylinder 100. This structure is integrally coupled. Therefore, the exhaust gas generated in the boiler body 240 is introduced into the exhaust gas discharge passage 150 of the inner cylinder 130 via the exhaust gas discharge pipe 260 and the exhaust communication 210 and formed at the front end thereof. It is discharged to the outside through the 140, the external air required for the combustion of the boiler is introduced into the air supply inlet passage 120 through the air supply hole 110 of the external cylinder 100, and the external air introduced into the external cylinder (100) It is supplied into the boiler body 240 via the connection port 170, the connection pipe 180, and the air supply communication 200 coupled to one side wall of the).

As described above, the effect generated by the inner cylinder 130 and the outer cylinder 100 are integrally combined in the same direction is such that the external air passes through the narrow air supply inlet passage 120 between the outer cylinder 100 and the inner cylinder 130. Preheated by the high-temperature exhaust gas flowing through the exhaust gas discharge passage 150 is supplied to the boiler body 240 to obtain the advantage that the combustion efficiency of the boiler is increased. By the way, the conventional flue (B) for the FF type boiler had to be coupled to the supply and exhaust holes 110, 140 formed on the outer circumferential surface of the outer cylinder 100 and the inner cylinder 130 at least a distance of at least L3. . This is a means for preventing the exhaust gas discharged to the outside through the exhaust hole 140 of the inner cylinder 130 to flow into the air supply hole 110 of the outer cylinder 100 located in close proximity, and the exhaust hole 140 as described above. As the minimum separation distance between the air supply hole 110 and the air supply hole 110 is dropped by L3 as shown in the drawing, the separation distance from the tip of the inner cylinder 130 to the wall 280 is also increased by L4. That is, when the distal end portion of the inner cylinder 130 is spaced apart from the wall 280 by L4, it is inconvenient for the pedestrians walking on the road, and there is a disadvantage in that it is not good in appearance. Exhaust hole 140 is formed on the outer peripheral surface of the tip. For example, if a reverse wind blows when the exhaust gas is being discharged through the exhaust hole 140, the exhaust gas in the exhaust gas discharge passage 150 is externally caused by the interference of the reverse wind. It was not discharged quickly, or the outside air was introduced into the exhaust gas discharge passage 150, there was a closed end to reduce the efficiency of the boiler. In addition, the exhaust gas passing through the exhaust gas discharge passage 150 is first contacted with the sealing plate 160 disposed in front of the exhaust gas discharge path 150, and is then diverted to be discharged through the exhaust hole 140. Since it is not quickly discharged to the outside there was a problem that the resistance to the blower (not shown) for forcibly discharging the exhaust gas. In addition, the shape of the supply / exhaust holes 110 and 140 is obtained by punching the outer circumferential surface of the cylindrical metal pipe, which is not only good in appearance, but also the supply / exhaust holes 110 and 140 formed by the punching process. ) Has a sharp edge, which leads to problems injuring hands during the construction of the boiler year.

Therefore, the present invention has been devised to solve the above problems, the front end of the inner cylinder can be installed so as not to be far from the wall, the exhaust gas flowing into the exhaust gas discharge passage can be quickly discharged to the front of the inner cylinder boiler For the FF type boiler to increase the efficiency of the exhaust gas, the exhaust gas can be quickly discharged even when the exhaust gas is discharged to the outside through the exhaust hole, and the reverse wind can be prevented from flowing into the exhaust hole. The purpose is to provide a year. Another object of the F. F boiler type flue according to the present invention is to prevent certain parts of the body from being damaged by the supply / exhaust holes, and to make the appearance beautiful.

The FF boiler flue according to the present invention for achieving the above object, while the exhaust gas is quickly discharged to the front end of the inner cylinder and the outer cylinder coupled to the boiler flue cap to prevent the reverse air flow into the flue, The boiler flue cap forms an inner circumferential wall inside the outer circumferential wall to allow the inner cylinder of the boiler flue to be coupled to the outer circumferential surface of the inner circumferential wall, and an air supply inlet passage between the inner and outer cylinders is shielded provided in an upper direction of the inner circumferential wall. While sealed by a plate, a front windshield in the shape of a V is formed in front of the inner circumferential wall, and the exhaust gas discharged through the exhaust gas by the front windshield increases the flow rate and is quickly discharged to the outside. In addition, the reverse wind blowing from the front is blocked, and the reverse wind discharge hole formed in the upper direction of the inner circumferential wall is partially introduced through the exhaust hole. So that a cant is again discharged to the outside has its features.

Hereinafter, the detailed structure of the flue for the F.F boiler according to the present invention will be described in detail based on the accompanying drawings. Exemplary drawings As shown in Figures 1 to 5, the present invention is fitted with a boiler flue cap (C) fitted to the tip of the boiler flue, and also in a position close to the boiler flue cap (C) in a completely new form The feature is that the air supply hole is formed. The boiler communication cap (C) has a generally cylindrical structure as shown in more detail in the third and fourth exemplary drawings.

The outer circumferential wall 10 of the boiler flue cap C has a diameter the same as that of the outer cylinder 100 of the boiler flue, and an inner circumferential wall 12 is formed along the circumference of the circumference, and the inner circumferential wall ( 12) and the outer circumferential wall 10 is a structure connected to each other by a diaphragm 36 of the radial arrangement structure, the inner circumference of the inner circumferential wall 12, the inner cylinder 130 of the boiler flue can be fitted. An inner cylinder coupling portion 22 is formed. In addition, a shielding plate for sealing the air supply inlet passage 120, which is a space between the outer cylinder 100 and the inner cylinder 130 of the boiler year, on the upper surface of the inner cylinder coupling portion 22 and one side upper end of the diaphragm 36 ( 20 is formed so that the inner circumferential surface of the outer cylinder 100 is fitted to the edge surface 26 of the shielding plate 20, and the inner cylinder coupling portion 22 formed at the bottom circumference of the shielding plate 20 is as described above. While the inner cylinder 130 is tightly fitted, while the outer circumferential wall 10 and the shielding plate 20 of the boiler flue cap C are opened, the counter-wind discharge hole 30 is provided. In front of the inner circumferential wall 12, a V-shaped front windbreak wall 14 is formed at intervals between the exhaust holes 28 through which exhaust gas is discharged to the outside. The front windshield 14 has an edge diameter at the tip of which is equal to the diameter of the inner circumferential wall 12, and integrally with the diaphragm 36 formed at predetermined intervals on the inner circumferential surface of the outer circumferential wall 10. As the structure is connected, the exhaust hole 28 positioned between the inner circumferential wall 12 and the front windshield 14 has a narrow space area toward the front. The shielding plate 20 for sealing the air supply inlet passage 120 has a lower end thereof as an inclined surface 24. The inclination direction of the inclined surface 24 is inclined toward the tip of the boiler flue cap C. The rear surface 38 of the diaphragm 36 has an inclined structure opposite to the direction in which the front windshield 14 is inclined, and the outer circumferential surface of the outer cylinder 100 close to the direction in which the boiler flue cap C is coupled. In the circumference, incisions 32 cut at regular intervals are selectively pressed inward in a state in which several lines are formed side by side in the longitudinal direction of the outer cylinder 100 to form an air supply hole 34 through which outdoor air is introduced. It is a structure.

Effects and effects of the flue for the F.F boiler according to the present invention configured as described above are as follows. Exemplary drawings As shown in FIG. 6, in the present invention, the exhaust gas discharged through the exhaust gas discharge pipe 260 of the boiler main body 240 includes the exhaust communication 210 and the exhaust gas discharge passage 150 of the boiler flue. It is to be quickly discharged to the outside through the boiler flue cap (C) coupled to the front of the flue via. That is, as illustrated in (a) of FIG. 7, exhaust gas exhausted from the exhaust gas discharge passage 150 rolls against the front windshield 14 of the boiler flue cap C located in front of the inside. It flows toward the exhaust hole 28 along the inclined portion 18, and the exhaust hole 28 has a narrower space area as it goes outward (outdoor), so that the fluid flows rapidly. . As the flow of the fluid increases, the exhaust pressure of the exhaust gas is increased so that the exhaust gas is quickly discharged to the outside in the exhaust gas discharge passage 150, and the exhaust gas is ejected to the front far from the boiler flue. Even if the air supply hole 34 is formed in the vicinity of the 28, the exhaust gas does not flow into the air supply hole 34. Therefore, in order to prevent the exhaust gas from flowing into the air supply hole, the front end portion of the inner cylinder 130 does not have to protrude a predetermined length longer than the front end portion of the outer cylinder 100 as in the prior art (Fig. 8). In addition to the advantages, the pedestrians will not be inconvenienced by the boiler year. On the other hand, in the present invention, the front windshield 14 is formed in front of the boiler flue cap (C), the front wind blower 14 is prevented from flowing into the boiler flue back wind blowing from the front of the flue. . That is, the reverse wind blowing from the front of the boiler flue (A) as shown in Figure 7 (b) of the exemplary drawing is to enter the exhaust gas discharge passage 150, the outer inclined portion of the front windshield 14 At the same time, the direction of the wind is blocked and the reverse wind discharge hole 30 is formed in the upper direction of the inner circumferential wall 12, so that even if some of the wind is introduced into the exhaust hole 28, the exhaust air is exhausted. Part of the reverse wind introduced by the outflow pressure of the gas is diverted to the space portion 40 between the outer circumferential wall 10 and the inner circumferential wall 12 and eventually discharged to the outside through the counter-wind discharge hole 30. . On the other hand, even if the side counter-wind flows through the counter-wind discharge hole 30, the introduced counter-wind is redirected by the inclined surface 24 located below the shield plate 20 and between the outer circumferential wall 10 and the inner circumferential wall 12 The exhaust gas is discharged back to the outside through the exhaust hole 28 by the exhaust pressure of the exhaust gas via the space portion 40 of the exhaust gas. In addition, on the outer circumferential surface of the outer cylinder 100, the inlet hole 34 is formed by compressing the cut portions 32, which are not perforated, so that the position of the air supply hole 34 is not exposed to the outside, thereby preventing the inflow of reverse wind. You can expect the advantages and the beauty of the appearance, and there is an effect that there is no fear of injury during the construction of the boiler year.

As described above, the flue for the FF boiler according to the present invention is rapidly discharged, and does not cause a backwind inflow into the air supply hole 34, and also efficiently with respect to the backwind blowing from the front or side of the flue. And the shape of the boiler flue cap (C) has a structure that can be mass-produced through injection molding, can be easily fitted to the tip of the outer cylinder 100 and the inner cylinder 130 of the boiler flue manufacture It is a very useful invention accompanied by the advantages such as a very simple process and year of assembly process.

Claims (2)

The inner cylinder 130 having a smaller diameter than the inner space of the outer cylinder 100 having a cylindrical shape is coupled to each other through the sealing groove 230, and the exhaust gas discharge passage 150 as the inner space of the inner cylinder 130 is connected to the inner cylinder 130. The exhaust gas generated from the boiler body 24 is discharged by the front windshield 14 having a V-shape at intervals of the exhaust hole 28 at the end of the exhaust gas discharge passage 150, and the sealing groove ( In the air supply inlet passage 120, which is a space between the outer cylinder 100 and the inner cylinder 130 formed by 230, in the FF type boiler flue A configured to flow external air necessary for combustion of the boiler, the FF type The inner cylinder 130 and the outer cylinder 100 of the flue (A) for the boiler is coupled to the boiler flue cap (C) to prevent the influx of backwind into the flue while the exhaust gas is discharged quickly to the front end, This boiler flue cap (C) is the inner circumferential wall (12) in the inner space of the outer circumferential wall (10) It is formed along the circumferential direction and is coupled to the inner circumferential surface of the inner cylinder 130, and the shielding plate 20 whose lower end is an inclined surface 24 is formed on the upper circumference of the inner circumferential wall 12 as much as the inner cylinder coupling portion 22. It is formed along the circumferential direction at intervals and the front end portion of the inner cylinder 130 and the outer cylinder 100 are fitted to the rim surface 26 of the inner cylinder coupling portion 22 and the shielding plate 20 to supply the air inlet passage 120. ) Is hermetically sealed, and a backwind discharge hole 30 is formed in the circumference of the shield between the shielding plate 20 and the outer circumferential wall 10, and the front windshield 14 is formed on the inner circumferential surface of the outer circumferential wall 10. Flue for the FF-type boiler, characterized in that integrally coupled with the diaphragm 36 formed at intervals of placement. According to claim 1, wherein the outer cylinder 100 of the flue (A) for the FF type boiler, the air supply hole 34 is formed in a position proximate to the boiler flue cap (C), the air supply hole 34 is Flue for FF-type boiler, characterized in that the incision portion 32 formed side by side with a predetermined arrangement interval along the outer peripheral surface circumference of the outer cylinder 100 is formed while being pressed in both the inner cylinder 130 direction except the center.