KR200223156Y1 - cylindrical boiler of which exhaust gas route is provided with spiral partition - Google Patents

Abstract

The present invention relates to a vertical cylindrical boiler which increases heat recovery from combustion gas and improves combustion efficiency of combustion gas by extending the residual time of combustion gas in the flue by spirally installing a double layer diaphragm in the flue between the combustion chamber and the exhaust pipe. will be.

Boiler (1) according to the present invention is a blister (3) is formed to circulate the boiler water inside the wall surface and forms an outer cylinder (2), the inner cylinder (5) installed concentrically inserted into the outer housing (2), A vertical cylinder including a combustion chamber 7 installed at a lower end of the inner cylinder 5 and a burner 9 installed at an assembly portion 11 extending through the outer housing 2 to the combustion chamber 7. In the boiler 1, the spiral duct 17 is formed by a spiral diaphragm 15 attached on the flue 13 between the inner circumferential surface of the outer housing 2 and the outer circumferential surface of the inner cylinder 5. It features.

Therefore, according to the boiler according to the present invention, by extending the length of the flue by the spiral duct can increase the amount of heat recovered from the combustion gas passing through the flue, it is possible to prevent the abrupt exhaust of the combustion gas to increase the thermal efficiency of the boiler It can be planned.

Description

Cylindrical boiler of which exhaust gas route is provided with spiral partition}

The present invention relates to a boiler, and more particularly, the combustion gas generated by the combustion of the fuel is discharged through the spiral flue formed in the spiral diaphragm to increase the residual time in the flue gas from the flue gas The present invention relates to a cylindrical boiler installed on a flue for improving waste heat recovery efficiency and improving combustion efficiency of combustion gas by vortices generated in a spiral flue.

There are various types of boilers that are widely used for heating in winter, such as cylindrical boilers, water pipe boilers, special boilers, etc. In recent years, high-performance boilers have been developed to improve fuel combustion efficiency and thermal efficiency.

Cylindrical boilers, the most basic form of such boilers are again divided into vertical boilers and horizontal boilers, and vertical boilers in which the main body is arranged vertically as shown by reference numeral 100 in FIG. Combustion chamber 103 is provided in the inner lower end of the outer cylinder 101, and the flue 107 connected to the combustion chamber 103 through the plurality of pipe | tubes 105 is installed in the upper end of the outer cylinder 101 inside. . The inside of the outer cylinder 101 is filled with boiler water 102, the water supply pipe 111 for supplying the boiler water on the outer cylinder side wall surface, the drain pipe 113 for draining the water, the heated vaporized water vapor heating facility Each of the air supply pipes 115 to be fed through is connected to each other, and a burner 109 for burning fuel is installed in the combustion chamber 103.

Therefore, when the conventional vertical cylindrical boiler 100 configured as described above starts to operate, various liquid fuels injected into the combustion chamber 103 by the burner 109 start to burn, and radiant heat generated during combustion, The boiler water 102 in the outer cylinder 101 is heated and vaporized, and the vaporized water vapor is supplied to and used in various heating facilities through the exhaust pipe 115. At the same time, the combustion gas combusted in the combustion chamber 103 is concentrated in the flue 107 through the plumbing 105 and heats the water 102 to utilize some of the waste heat and is then exhausted to the outside through the exhaust pipe 117. .

By the way, the conventional boiler 100 as described above is to utilize the flue 107 in recovering the heat of combustion of the combustion gas, there is a limit to increase the capacity of the flue 107, the structure of the flue 107 is continuously It has a box structure that cannot accommodate the combustion gas for a long time, and since the installation position is adjacent to the exhaust pipe 117, there is a problem that effective recovery of combustion heat is difficult.

The present invention is proposed to solve the problems of the conventional vertical cylindrical boiler as described above, by extending the length of the connection from the combustion chamber to the exhaust pipe to allow the combustion gas to flow around the blister formed in the boiler casing for a relatively long time. At the same time, the spiral connecting the furnace and the combustion chamber is produced in spiral form to increase the heat recovery rate of the combustion gas from the combustion gas by prolonging the association time of the combustion gas and the residual time in the year, and to prevent the reduction of combustion efficiency due to the rapid discharge of the combustion gas. The purpose is to do that.

1 is a schematic longitudinal cross-sectional view of a conventional vertical cylindrical boiler.

Figure 2 is a schematic longitudinal cross-sectional view of a vertical cylindrical boiler according to the present invention.

3 is a perspective view showing in more detail the spiral diaphragm of FIG.

Explanation of symbols on the main parts of the drawings

1: boiler 2: outer housing

3: blister 5: inner barrel

7: combustion chamber 9: burner

13: year 15: spiral diaphragm

17: spiral duct 19: exhaust pipe

21: Association 31: Hot Water Pipe

33: water supply line 35: hot water line

37: water line 39: water line

45: ashtray

In order to achieve the above object, the present invention has a blister in which a boiler water is circulated inside a wall, and forms an outer cylinder, an outer housing constituting an outer cylinder, an inner cylinder inserted concentrically in the outer housing, a combustion chamber installed at a lower end of the inner cylinder, and an outer housing. In the vertical cylindrical boiler comprising a burner installed in the assembly portion extending through the combustion chamber in the, the cylindrical boiler, the spiral duct is formed by the spiral diaphragm attached on the flue between the inner peripheral surface of the outer housing and the outer peripheral surface of the inner cylinder To provide.

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

As shown in FIG. 2, the vertical cylindrical boiler according to the present invention basically has a configuration similar to that of a conventional vertical cylindrical boiler, the outer housing 2 forming the outer cylinder of the boiler, combustion gas The inner cylinder 5 which is refluxed, the combustion chamber 7 in which fuel is burned, and the burner 9 which ignites and combusts the fuel of the combustion chamber 7 are comprised.

Here, the outer housing (2) is made of a cylindrical outer cylinder, the blister (3) is formed in the wall circulating boiler water, the upper and lower ends are closed by the upper and lower finishing plates (23, 25), where Inside the upper and lower finishing plates 23 and 25, thermal insulation materials 27 and 29 for thermal insulation are attached, respectively, and inside the blister 3, a hot water pipe 31 through which water for circulation is circulated is coiled and installed. . On the outer wall of the outer housing 2, a water supply line 33 for supplying water to the hot water pipe 31 and a hot water line 35 for supplying hot water heated in the hot water pipe 31 to an external facility are installed therethrough. In addition, a return line 37 for returning the boiler water circulating the heating facility back into the blister 3 and a water supply line 39 for supplying the heated water to the heating facility are also connected to the upper and lower portions, respectively.

The inner cylinder 5 inserted coaxially on the center line of the outer housing 2 is also a cylindrical cylinder, the upper end of which is closed by a lid 41, and the flue 13 between the inner peripheral surface of the outer housing 2. The combustion chamber 7 is continuously installed in the lower end part.

The combustion chamber 7 installed at the lower end of the inner cylinder 5 and configured to combust fuel injected from a fuel injection nozzle (not shown) has a burner 9 for ignition on the sidewall surface through the assembly portion 11. It is installed through the outer housing (2), and a waste container 43 for accommodating the remaining fuel residues burned on the lower lower finishing plate 25 is provided.

Further, on the flue 13, a plurality of layers of diaphragms 15 as shown in FIGS. 2 and 3 are arranged in a helical manner and attached to the lower portion of the inner circumferential surface of the inner cylinder 5, which is attached to the outer housing 2. The spiral duct 17 is formed together with the inner circumferential surface of the circumferential surface and the outer circumferential surface of the inner cylinder 5. In addition, the flue 13 extends to the exhaust pipe 19 through the connection 21 connected to the upper end, where the connection 21 extends through the center of the upper blister 3 and extends to the upper end of the outer housing 2. Is extended downward to be connected to the exhaust pipe 19 located in the middle of the housing 2 so as to surround the inside and outside of the blister 3, and a backrest 45 is provided at the end of the exhaust pipe 19.

Now, when explaining the operating state of the vertical cylindrical boiler (1) of the present invention configured as described above are as follows.

When the boiler 1 starts to operate, first, the liquid fuel injected into the combustion chamber 7 through the fuel injection nozzle is ignited by the burner 9 to ignite, and the blister due to the high heat generated when the ignited fuel is burned ( 3) The boiler water inside is heated. In this way, when the water gradually begins to heat in the lower part of the blister 3, the water in the upper part of the blister 3 is heated by the hot water gradually convection upwards and the fire propagated from the combustion chamber 7 to the upper end of the inner cylinder 5. Also gradually heated, after which the hot water circulates throughout the blister 3 as a whole. The heated water is supplied to an external heating facility through the water supply line (39) to be used for heating, and then radiated. Then, the heated water is returned to the blister (3) through the return line (37) and heated again to a high temperature. Heating is achieved by repeatedly performing the re-injection process.

At the same time, the water flowing in the upper portion of the blister 3 heats the water to be used as living water by heating the hot water pipe 31 in the form of a bath. The heated water is supplied to the user through the hot water line 35 to be used as hot water. The water supply line will be resupplied as much water as used.

In this way, combustion of fuel is performed in the combustion chamber 7 to heat the boiler water by self-convection or by radiant heat from the inner cylinder 5 and the combustion chamber 7, and the combustion gas generated at this time is primarily an inner cylinder. While refluxing the interior of the inlet (5), it enters the spiral duct (17) formed by the spiral diaphragm (15) via the flue (13) and is exhausted from the exhaust pipe (19) to the outside through the inlet (21), the spiral duct (17). In the process of passing through the year (13) passing time is delayed to deliver a large amount of waste heat to the water contained in the lower blister (3). In addition, incomplete combustion gas introduced into the flue 13 along with the combustion gas in the combustion fire also passes through the duct 17 while the abrupt emission is suppressed due to the spiral duct 17, and thus the combustion time is extended. Burns closely.

In addition, since the plume 21 extending from the flue 13 extends upward and downward through the upper portion of the blister 3, the combustion gas passing through the plume 21 is a large amount of heat into the water of the blister 3 surrounding the surroundings. After transferring the heat of the exhaust pipe 19 is discharged to the outside.

As mentioned above, according to the cylindrical boiler in which the spiral diaphragm according to the present invention is installed on the flue, since the combustion gas passes through the spiral duct formed by the spiral diaphragm on the flue, the passage time is long, so that more heat is transferred to the duct. The flue gas can be delivered to the water contained in the surrounding blisters, and after passing the flue gases are exhausted through the casing installed in an extended state to penetrate the blisters up and down, so that the residual heat can be transferred to the water contained in the surrounding blisters as much as possible. It becomes possible. In addition, since the combustion gas spiral duct is not rapidly exhausted from the combustion chamber and the combustion time is delayed while passing through the inside of the duct, it is possible to maintain a combustion state closer to complete combustion.

Therefore, a large amount of waste heat discharged to the outside through the combustion gas can be returned for water heating, which not only can significantly improve the thermal efficiency of the boiler, but also increase the internal temperature of the combustion chamber to 1200 ° C during combustion. It is possible to completely remove dioxin, a harmful substance generated when using garbage, and to completely burn fuel, which prevents air pollution or odor from exhaust, and does not generate combustion residue after combustion, which facilitates maintenance. I can do it.

Claims (2)

A blister (3) is formed in the wall surface in which boiler water is circulated and formed in an outer housing (2) forming an outer cylinder, an inner cylinder (5) concentrically inserted into the outer housing (2), and a lower end of the inner cylinder (5). In the cylindrical cylindrical boiler (1) comprising a combustion chamber (7), a burner (9) penetrating the outer housing (2) and installed in the assembly portion (11) extending to the combustion chamber (7), the outer Cylindrical boiler, characterized in that the spiral duct (17) is formed by a spiral diaphragm (15) attached on the flue (13) between the inner peripheral surface of the housing (2) and the outer peripheral surface of the inner cylinder (5). The tube 21 downstream of the spiral duct 17 extending from the flue 13 to the exhaust pipe 19 extends to have an inner and outer dual structure and surrounds the blister 3. Cylindrical boiler.