KR101043144B1 - Boiler - Google Patents

Abstract

The present invention relates to a boiler, by arranging a baffle for guiding the air supplied to the burner on the upper portion of the boiler burner can effectively block the heat of combustion emitted to the outside atmosphere through the upper portion of the boiler burner. Therefore, it is possible to improve the efficiency by minimizing the heat loss of the boiler.

Boiler, Blower, Burner, Air Supply, Baffle

Description

Boiler {BOILER}

The present invention relates to a boiler, and more particularly, to a boiler that can effectively block the combustion heat of the boiler in which the air supplied to the burner is discharged to the outside, and can prevent the heat damage of the boiler by the combustion heat of the boiler.

In general, a boiler is a device that heats water to generate high temperature and high pressure steam or hot water. Such a boiler may be used for heating, bathroom or driving of a turbine. Heat sources used in boilers include electricity, natural gas, petroleum gas, gasoline, kerosene and diesel.

However, the heat generated from the heat source is not used for heating the water, and some of the heat is released to the outside of the boiler. In particular, the heat of combustion of the boiler may be concentrated in a specific part of the upper part of the boiler combustion part due to the rise of the combustion gas inside the boiler.

Therefore, in the conventional boiler, since the upper portion of the combustion portion may be heated to a high temperature by the heat of combustion, a specific portion of the upper portion of the combustion portion may be thermally deformed and durability may be lowered. In addition, since the conventional boiler has a structure in which the heat of combustion is discharged to the outside through the upper portion of the combustion unit, the overall energy efficiency may be reduced.

In recent years, various technologies have been developed to significantly reduce the heat of combustion emitted through the upper portion of the combustion section of a boiler.

Embodiment of the present invention provides a boiler that can effectively block the heat of combustion of the boiler, the air supplied to the burner is discharged to the outside to improve the efficiency of the boiler.

In addition, the embodiment of the present invention provides a boiler that the air supplied to the burner to uniformly cool the entire upper portion of the boiler combustion unit to prevent the phenomenon that the heat of combustion of the boiler is concentrated in a specific portion of the upper portion of the boiler combustion unit.

In addition, an embodiment of the present invention provides a boiler that can prevent the thermal deformation of the upper portion of the boiler combustion unit by the heat of combustion of the boiler.

According to an embodiment of the present invention, a burner having a burner provided therein, an air supply unit provided at an upper portion of the combustion unit and having an outlet for supplying air to the burner, and connected to an inlet formed in the air supply unit and the air supply unit A blower for blowing air in a horizontal direction in the interior of the air supply unit, and the air introduced into the air inlet port passes through all the internal spaces of the air supply unit so that the air can be supplied to the burner through the outlet port Provided is a boiler including a baffle to form an air flow path inside the air supply.

That is, the air sucked from the blower may be supplied to the burner after flowing evenly inside the air supply unit by the baffle. Therefore, the air flowing in the air supply unit may block the heat of combustion emitted to the outside through the upper portion of the combustion unit. If the combustion heat is not discharged arbitrarily in the boiler as described above, the load of the burner can be reduced, and the efficiency of the boiler can be improved. In addition, if the air in the air supply unit is uniformly flow by the baffle as described above, the phenomenon that the heat of combustion is concentrated in a specific portion of the upper portion of the combustion unit can be prevented, thereby preventing the thermal damage of the upper portion of the combustion unit The durability of the boiler can be improved.

The air supply unit may be formed in the same width as the upper portion of the combustion unit. Accordingly, the air supply unit may block all combustion heat discharged to the outside through the upper surface of the combustion unit.

The baffle may protrude downward from an upper surface in the air supply unit. An end portion of the baffle may be spaced apart from the lower surface of the air supply unit at a predetermined interval. That is, a uniform flow space may be formed between the lower surface of the air supply unit and the baffle so that the air sucked into the suction port is uniformly flown without being affected by the baffle. In addition, when the lower surface of the air supply and the end of the baffle are spaced apart, since the heat of combustion of the boiler cannot be thermally conducted to the baffle in the upper portion of the combustion unit, the air supply is formed in a structure that is not thermally conductive through the baffle Can be.

In addition, the uniform flow space may be formed higher than the set height to maintain the clearance (clearance). However, if the height of the uniform flow space is too high, not only the blowing capacity of the blower is increased but also the baffle efficiency is reduced, so that the uniform flow space can be formed as low as possible while maintaining clearance.

The outlet may be formed under the air supply, the inlet may be formed on the side of the air supply.

The baffle may be formed in a shape in which the air sucked into the suction port flows along the edge portion of the air supply part to the opposite side of the suction port and then flows to the discharge port. That is, the air sucked through the suction port may pass through the entire internal space of the air supply part by the baffle and then be supplied to the burner through the discharge port. Therefore, the air flowing in the air supply unit may block combustion heat emitted from the upper portion of the combustion unit, and the phenomenon in which the upper portion of the combustion unit or the air supply unit is heated to a high temperature by the combustion heat emitted from the upper portion of the combustion unit Can also be prevented.

The baffle may include a branch formed between the intake port and the outlet port to branch the air sucked into the intake port to an edge portion within the air supply unit, and the side portion of the air supply unit from the branch part to the opposite side of the intake port. It may include a guide formed long along the outlet.

Here, the branch is a guide member for flowing the air sucked into the suction port to the edge portion of the air supply unit formed on the left and right of the discharge port. The guide part is a guide member which flows air branched from the branch part along an edge portion of the air supply part and then flows along the central part of the air supply part to the outlet.

The baffle may be formed in a parabolic shape or an arc shape convex toward the suction port, or in a triangular shape or a 'V' shape pointed toward the suction port. That is, the baffle may be formed on the upper surface of the air supply part in a structure in which the branch part and the guide part are integrated.

On the other hand, unlike the above, the baffle may be formed in a shape to rotate the air sucked into the inlet toward the outlet. That is, the baffle may be formed in a spiral shape in the air supply unit so that a spiral air flow path is formed between the intake port and the discharge port. Therefore, the air sucked through the suction port may be supplied to the burner through the discharge port after rotationally flowing along the inner space of the air supply unit by the baffle.

In the boiler according to the embodiment of the present invention, since the air flow path passing through all the internal spaces of the air supply part is formed by the baffle, the air introduced into the air supply part can uniformly cool all parts in the air supply part. Therefore, it is possible to prevent the phenomenon in which the heat of combustion of the boiler is concentrated on a specific part of the upper portion of the boiler combustion part. In addition, the durability of the boiler may be improved by preventing a phenomenon in which a specific portion of the upper portion of the combustion unit is thermally deformed by the heat of combustion.

In addition, the boiler according to the embodiment of the present invention, by using the air in the air supply unit may block the combustion heat of the boiler discharged to the outside through the upper portion of the combustion unit. Therefore, it is possible to reuse the heat of combustion emitted from the boiler to the outside, thereby improving the overall energy efficiency of the boiler, reduce the load of the burner, and also reduce the operating cost of the boiler.

In addition, the boiler according to the embodiment of the present invention is formed between the end of the baffle and the lower portion of the air supply unit uniform flow space is formed at a predetermined height, thereby preventing unnecessary secondary flow of air flowing along the baffle It can prevent and heat conduction through a baffle can be prevented.

In addition, the boiler according to the embodiment of the present invention, since the blower supplies the air in the horizontal direction inside the air supply unit and the baffle guides the air in the air supply unit in the horizontal direction without reducing the flow rate, the air flow performance is reduced It can flow smoothly.

In addition, since the boiler according to the embodiment of the present invention has a simple structure in which the air supply unit and the baffle are formed on the upper part of the combustion unit, not only can be easily employed in various types of boilers, but also the boilers can be employed at low cost. Can be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. Like reference numerals in the drawings denote like elements.

1 is a configuration diagram schematically showing the main part of the boiler according to an embodiment of the present invention, Figure 2 is a view showing a cross-sectional view of the air supply unit along the line A-A shown in FIG.

Referring to FIG. 1, a boiler 100 according to an embodiment of the present invention includes a combustion unit 110, a burner 120, a blower 130, an air supply unit 140, and a baffle 150. The boiler 110 may be classified into a gas boiler, an electric boiler, a diesel fuel boiler, and the like according to a heat source. However, in the present embodiment, the boiler 110 is limited to the gas boiler for convenience of description.

A burner 120 and a heat exchanger (not shown) may be provided inside the combustion unit 110. The heat exchanger is a device for heating water by receiving heat from the burner 120, and may be manufactured in various shapes according to design conditions of the boiler 100.

The burner 120 is a device that provides heat to a heat exchanger disposed inside the combustion unit 110. The burner 120 may generate heat by burning a mixed gas of gas and air (C). Gas used for the burner 120 is a natural gas or petroleum gas. The burner 120 may be provided inside the combustion unit 110. The burner 120 may be employed in various kinds according to the design conditions of the boiler (100).

The blower 130 is a device for supplying external air (C) to the burner (120). The blower 130 may be used in various kinds according to the design conditions of the boiler (100). In addition, the blower 130 may be connected to the side of the air supply unit 140 to blow the air (C) in the horizontal direction to the air supply unit 140.

The air supply unit 140 is a member that supplies the air C blown by the blower 130 to the burner 120. The air supply unit 140 may be provided at an upper portion of the combustion unit 110. Therefore, most of the heat of combustion emitted from the boiler 100 to the outside may be transmitted to the air supply unit 140. This is because the combustion gas in the boiler 100 is mostly raised to the upper portion of the combustion unit 110.

In addition, the air supply unit 140 may be formed in a shape that is widely extended in the horizontal direction. The air supply unit 140 may be formed to have the same width as the upper portion of the combustion unit 110. The air supply unit 140 may be formed in various flat cross-sectional shapes, such as circular, elliptical, and polygonal, depending on the shape of the combustion unit 110. However, in the present embodiment, for the convenience of description, the flat cross-sectional shapes of the combustion unit 110 and the air supply unit 140 will be described as being circular.

An outlet 142 connected to the burner 120 may be formed below the air supply unit 140. An air inlet 144 may be formed at one side of the air supply unit 140 connected to the blower 130. Hereinafter, in the present embodiment, the outlet 142 may be formed at the lower center of the air supply unit 140, and the inlet 144 may be formed to be radially connected to the side of the air supply unit 140. That is, the inlet 144 may be formed to have a structure for supplying air C toward the center of the air supply unit 140.

1 and 2, the baffle 150 is a member that guides the air C introduced into the inlet 144 to the outlet 142. That is, the baffle 150 forms a flow path of the air C flowing from the inlet 144 to the outlet 142 in the air supply unit 140. Meanwhile, the air flow path formed in the air supply unit 140 may be formed in a shape in which air C introduced into the inlet 144 passes through all the internal spaces of the air supply unit 140 and then is guided to the outlet 142. Can be. Therefore, when air C flows along the air flow path formed by the baffle 150, the air supply unit 140 may be uniformly cooled as a whole, and the upper portion of the combustion unit 110 and the air supply unit 140 may be cooled. It can block the heat of combustion emitted to the outside.

The baffle 150 is a panel-shaped member protruding downward from the upper surface in the air supply unit 140. The end of the baffle 150 may be spaced apart from the lower surface of the air supply unit 140 by a predetermined interval (G). That is, a uniform flow space S is formed between the lower surface of the air supply unit 140 and the baffle 150 so that the air C sucked into the inlet 144 is uniformly flown without being affected by the baffle 150. Can be.

In addition, the uniform flow space (S) may be formed higher than the set height (G) to maintain the clearance (clearance). However, if the height G of the uniform flow space S is too high, the blowing capacity of the blower 130 may be increased to reduce the blowing efficiency, and the air guiding efficiency of the baffle 150 may also be reduced. Therefore, the height of the protrusion of the baffle 150 may be formed such that the height of the uniform flow space S is as small as possible while maintaining the clearance.

In addition, when the lower surface of the air supply unit 140 and the end of the baffle 150 are disposed to be spaced apart, the heat of combustion of the boiler 100 may not be thermally conducted to the baffle 150 from the upper portion of the combustion unit 110. Since the air supply unit 140 has a structure in which heat conduction through the baffle 150 is impossible as described above, the air supply unit 140 may greatly reduce the external air discharge due to the heat conduction phenomenon of the air supply unit 140, and the air supply unit 140 The effect of blocking the release can be further enhanced.

On the other hand, the baffle 150 flows the air (C) sucked through the inlet 144 to the opposite side of the inlet 144 along the edge portion in the air supply unit 140 and then along the central portion in the air supply unit 140. It may be formed in a shape that flows to the outlet 142. That is, the air flow path of the baffle 150 is formed in a semicircular shape along the side in the air supply unit 140 from the inlet port 144 and then formed in a straight line toward the outlet 142 formed in the center of the air supply unit 140. Can be.

Therefore, the air C introduced into the inlet 144 flows evenly through the internal space of the air supply unit 140 by the baffle 150 and then is supplied to the burner 120 through the outlet 142. When the air C flows inside the air supply unit 140 for a predetermined time, the heat exchange time between the air supply unit 140 and the air C is increased, thereby sufficiently securing the cooling performance of the air supply unit 140. . In addition, since heat is exchanged with the air C in all parts of the air supply unit 140, a particular part of the air supply unit 140 is heated to a high temperature by the heat of combustion transmitted from the boiler combustion unit 110. You can prevent it.

Such a baffle 150 may include a branching portion 152 and a guide portion 154. The branch part 152 may be formed between the inlet port 144 and the outlet port 142 in order to branch the air C sucked into the inlet port 144 in a left-right direction based on the outlet port 142. That is, the branch 152 serves to guide the air C sucked into the inlet 144 to the edge portion of the air supply unit 140 formed on the left and right sides of the outlet 142. The guide part 154 may be formed to be long between the side part of the air supply part 140 and the outlet port 142 from the opposite ends of the branch part 152 to the portion facing the inlet port 144. That is, the guide part 154 flows the air C branched from the branch part 152 along the edge of the air supply part 140, and then flows to the outlet 142 along the central part of the air supply part 140. It acts as a fluid.

Hereinafter, in the present embodiment, the branch part 152 and the guide part 154 will be described as being integrally formed. The baffle 150 as described above may be formed in any one of a parabolic shape, an arc shape, a triangular shape, or a 'V' shape inside the air supply unit 140 when the air supply unit 140 is viewed from above. have. At this time, the convex inflection point or pointed bending point formed on the baffle 150 may be disposed toward the suction port 144. However, unlike the present exemplary embodiment, the branch parts 152 and the guide parts 154 may be separately formed at different positions, or a plurality of branches may be formed.

Looking at the operation of the boiler 100 according to an embodiment of the present invention configured as described above are as follows.

First, the blower 130 is operated to supply external air C to the burner 120, and the burner 120 is operated to burn the external air C and the gas. The heat exchanger built in the combustion unit 110 receives the combustion heat of the burner 120 and heats the water.

However, some of the combustion heat of the burner 120 is not transmitted to the heat exchanger and is discharged to the outside of the combustion unit 110. As described above, most of the heat of combustion emitted to the outside of the combustion unit 110 is transferred to the upper portion of the combustion unit 110 due to the property of the combustion gas to rise. Therefore, since most of the heat of combustion is transmitted to the air supply unit 140 formed on the upper portion of the combustion unit 110, the temperature of the air supply unit 140 is raised to high temperature by the heat of combustion.

On the other hand, when the blower 130 is operated, the air (C) blown by the blower 130 is introduced into the air supply unit 140 through the inlet 144, the air (C) in the air supply unit 140 Is discharged to the burner 120 through the outlet 142.

Here, looking at the flow of air (C) in the air supply unit 140 in more detail, the air (C) introduced into the inlet 144 is branched to the left and right in the branch 152 of the baffle 150 In addition, the air branched from the branch 152 flows to a portion opposite to the inlet 144 along the guide portion 154 of the baffle 150 and the side portion of the air supply 140. Then, the air reaching the portion opposite to the inlet 144 flows to the central portion of the inlet 144 in which the outlet 142 is formed, and is supplied to the burner 120 through the outlet 142.

As described above, the air C in the air supply unit 140 may flow by the baffle 150 in the air flow path passing through all the internal spaces of the air supply unit 140. In this process, the air C supplied by the blower 130 may not only cool the air supply unit 140 heated by the combustion heat, but also block the combustion heat emitted to the outside.

3 is a configuration diagram schematically showing the main part of the boiler according to another embodiment of the present invention, Figure 4 is a view showing a cross-sectional view of the air supply unit along line B-B shown in FIG. In FIGS. 3 and 4, the same reference numerals as those shown in FIGS. 1 and 2 denote the same members. Hereinafter, the points different from the boiler 100 illustrated in FIGS. 1 and 2 will be described.

3 and 4, the boiler 200 according to another embodiment of the present invention is different from the boiler 100 shown in FIGS. 1 and 2, the inlet 244 of the air supply unit 140 and The difference is that the baffle 250 is formed in another shape.

The inlet 244 may be formed at the side of the air supply unit 140 to supply air C into the air supply unit 140. Hereinafter, in the present embodiment, it is described that the air C sucked into the inlet 244 is formed at the side of the air supply unit 140 to be supplied to the edge portion of the air supply unit 140. That is, the inlet 244 may be formed to have a structure for supplying the air (C) blown by the blower 130 toward the side in the air supply unit 140. If the air supply unit 140 is formed in a circular flat cross-sectional shape, the inlet 244 may be formed in a tangential direction on the side portion of the air supply unit 140. However, the inlet 244 may be formed in the side portion of the air supply unit 140 to supply the air (C) to a position other than the edge portion in the air supply unit 140.

The baffle 250 may be formed in a shape that rotates the air introduced into the inlet 244 toward the outlet 142. That is, the air flow path of the baffle 250 is bent from the inlet 244 toward the outlet 142 formed in the center of the air supply unit 140. Therefore, the air introduced through the inlet 244 may be supplied to the burner 120 through the outlet 142 after rotationally flowing in one direction by the baffle 250 inside the air supply unit 140.

For example, when the air supply unit 140 is viewed from above, the baffle 250 is formed inside the air supply unit 140 to form a spiral air flow path between the inlet port 244 and the outlet port 142. It may be formed in a spiral shape. As such, when the air flow path formed by the baffle 250 is formed in a spiral shape, the air C may be stably flowed at a constant direction and speed without rapidly changing the flow direction and flow rate of the air C. Can be.

As described above, one embodiment of the present invention has been described by specific embodiments, such as specific components, and limited embodiments and drawings, but this is only provided to help a more general understanding of the present invention. The present invention is not limited thereto, and various modifications and variations can be made by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

1 is a configuration diagram schematically showing the main part of the boiler according to an embodiment of the present invention,

2 is a cross-sectional view of the air supply unit taken along the line A-A shown in FIG.

3 is a configuration diagram schematically showing a main part of a boiler according to another embodiment of the present invention;

4 is a cross-sectional view of the air supply unit along the line B-B shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

100, 200: boiler 110: combustion unit

120: burner 130: blower

140: air supply unit 150, 250: baffle

Claims (8)

A burner having a burner provided therein; An air supply unit provided at an upper portion of the combustion unit and having an outlet for discharging air to the burner; A blower connected to an intake port formed in the air supply unit and configured to blow air in a horizontal direction inside the air supply unit; And Is formed in the air supply unit, and the air flowing into the inlet port to form an air flow path inside the air supply unit so that after being passed through all the internal space of the air supply unit can be supplied to the burner through the outlet baffler; Boiler comprising. The method of claim 1, The air supply unit is a boiler formed in the same width as the upper portion of the combustion unit. The method according to claim 1 or 2, The baffle protrudes downward from the upper surface in the air supply, An end portion of the baffle is spaced apart from the lower surface in the air supply at regular intervals. The method of claim 3, The outlet is formed in the lower portion of the air supply, the inlet is formed in the side of the air supply, The baffle has a shape in which the air sucked into the inlet port flows along the edge portion of the air supply unit to an opposite side of the inlet port and then flows to the outlet port. 5. The method of claim 4, The baffle, A branch formed between the inlet and the outlet to branch the air sucked into the inlet to an edge portion in the air supply; And A guide part formed along the side of the air supply part and the discharge port from the branch part to an opposite side of the inlet port; Boiler comprising. 5. The method of claim 4, The baffle may be formed in a parabolic shape or an arc shape convex toward the suction port, or in a triangular shape or a 'V' shape pointed toward the suction port. The method of claim 3, The outlet is formed in the lower portion of the air supply, the inlet is formed in the side of the air supply, The baffle is formed in a shape to rotate the air sucked into the suction port toward the discharge port. The method of claim 7, wherein The baffle has a spiral formed in the air supply unit so that a spiral air flow path is formed between the inlet and the outlet.

Images