WO2016159709A1 - Oil-fired boiler having combustion gas path guide - Google Patents

Abstract

The present invention relates to an oil-fired boiler having a combustion gas path guide, the oil-fired boiler comprising: a combustion chamber wall body for encompassing a combustion chamber in which combustion is performed by a burner; a plurality of fire tubes provided to face the burner with the combustion chamber interposed therebetween, such that the combustion gas generated by the combustion of the burner passes through the inside thereof; a first fire tube support plate to which one end, of the fire tube, close to the burner is fixed and supported; a boiler body for forming a water tank since heating water is filled in a space between the boiler body and the combustion chamber wall body and a space between the boiler body and the fire tube; and a combustion gas path guide provided between the burner and the first fire tube support plate, preventing the combustion gas generated by the combustion of the burner from flowing through a center portion thereof and, simultaneously, allowing the combustion gas to flow through a space formed between an edge portion thereof and the inner surface of the combustion chamber wall body.

Description

Oil boiler with flue gas flow guide

The present invention relates to an oil boiler equipped with a combustion gas flow path guide, and more particularly, to prevent the combustion gas generated in the burner from being concentrated on the associated support plate to which the associative bonds are combined. A guide is provided with an oil boiler.

BACKGROUND ART Boilers, which are widely used for heating and hot water supply facilities in general households, are classified according to various criteria such as fuel used to heat heating water, heat sources and burner positions. That is, depending on the fuel used, it is divided into an oil boiler and a gas boiler. The oil boiler uses light oil or kerosene as fuel, and the gas boiler uses LPG or LPG as fuel. Moreover, it is divided into the general type boiler which heat-exchanges only by the heat source (sensible heat) which arises from fuel combustion, and the condensing boiler which heat-exchanges by the latent heat of condensation which generate | occur | produces from a sensible heat exchanger. In addition, according to the position of the burner that burns fuel, the burner is divided into an upward combustion boiler located at the bottom of the boiler and a downward combustion boiler located at the top of the boiler.

Among these types of boilers, FIG. 1 shows a conventional down combustion general type oil boiler.

The burner 15 is provided at the upper portion of the boiler, and the combustion chamber 10 is formed at the lower portion of the burner 15. Combustion is performed inside the combustion chamber 10 by the flame generated by the burner 15.

The lower part of the combustion chamber 10 is provided with a plurality of pipes 12 through which combustion gas passes and forms a heat exchanger. The upper end of the associative 12 is fixedly installed on the first associated support plate 13, and the lower end of the associative 12 is fixedly installed to the second associated support plate 14.

On the outside of the combustion chamber 10 and the tube 12 is provided a boiler body 11 which forms the outer body of the boiler. The space between the boiler body 11 and the combustion chamber 10 and the space between the boiler body 11 and the tube 12 is a water tank 30 filled with heating water.

In the space between the boiler body 11 and the combustion chamber 10, the hot water supply coil 20 is provided in the shape of winding the circumference of the combustion chamber 10. Water to be supplied to the user is supplied to the inside of the hot water supply coil 20, and the water is heated by heat exchange with the heating water filled in the water tank 30 and supplied to the user as hot water.

The water filled in the water tank 30 is heated by heat exchange with the plume 12 and supplied to a heating source.

In the conventional downward combustion chamber oil boiler having such a configuration, the flame generated by the burner 15 is formed in a downward direction, due to boiling in the area A below the first associated support plate 14 due to the high temperature flame. Bubbles are generated. Such bubbles have a problem that noise is generated by the sound of bubble bursting when heat is inhibited and thermal efficiency is lowered, and bubbles are overheated.

Korean Patent No. 10-1504394 is disclosed as a prior art for solving this problem. However, in the case of Patent No. 10-1504394, the upper plate and the lower plate have a multi-stage shape such that the height increases toward the outermost distance from the flame, but the upper plate and the lower plate have a complicated shape. Difficult to manufacture, even if possible manufacturing, there was a problem that takes a lot of manufacturing costs.

The present invention has been made to solve the above-mentioned problems, to provide an oil boiler equipped with a combustion gas flow guide that can prevent the boiling caused by the flame of the burner to improve the thermal efficiency and reduce the noise generation The purpose is to.

Oil boiler of the present invention for solving the above problems, the combustion chamber wall 112 surrounding the combustion chamber 102 is burned by the burner 103; A plurality of pipes (122) installed so as to face the burner (103) with the combustion chamber (102) interposed therebetween so that combustion gas by combustion of the burner (103) passes through the interior thereof; A first associated support plate 113 on which one end close to the burner 103 is fixed in the association 122; A boiler body (110) filling a space between the combustion chamber wall (112) and a space between the tube (122) and heating water to form a water tank (101); It is provided between the burner 103 and the first associated support plate 113, and prevents the combustion gas due to the combustion of the burner 103 flows through the central portion of the burner 103 and the edge of the combustion chamber wall 112 Combustion gas flow guide (200,200-1,200-2,200-3) to flow through the space formed between the inner surface and made.

The combustion gas flow guide 200 may include a guide plate 211 spaced apart from the first associated support plate 113.

It may further include a guide side wall 212 extending toward the burner 103 at the edge of the guide plate 211.

The heat insulating material 220 may be provided on the guide plate 211 to block the heat of the combustion gas generated by the burner 103 from being transferred to the guide plate 211.

The combustion gas flow guide 200-1 includes a guide plate 211-1 spaced apart from the first associated support plate 113; It is provided on the guide plate 211 may be made of a heat insulating material 220-1 to block the heat of the combustion gas generated in the burner 103 is transmitted to the guide plate 211-1.

The combustion gas flow guide 200-2 may include: a first guide plate 211-2 spaced apart from the first associated support plate 113; A second guide plate 212-2 provided to form a separation space 213-2 between the guide plate 211-2; A guide side wall 214-extending from the edges of the first guide plate 211-2 and the second guide plate 212-2 toward the burner 103 and sealing the interior of the separation space 213-2; 2).

The combustion gas flow guide 200-3 may include: a first guide plate 211-3 spaced apart from the first associated support plate 113; A second guide plate 212-3 provided to form a space 213-3 between the guide plate 211-2; The edges of the first guide plate 211-2 and the second guide plate 212-3 may be connected to each other, and may be formed of a guide side wall 214-3 sealing the interior of the separation space 213-3. .

In the combustion gas flow guides 200, 200-1, 200-2, and 200-3, the part contacting the combustion gas may be made of ferritic stainless steel for high temperature oxidation.

The edge end of the guide plate 211 may be formed to protrude outward more than the outer surface of the guide side wall 214.

The oil boiler according to the present invention includes a combustion chamber wall (112) surrounding the combustion chamber (102) where combustion by the burner (103) occurs; A plurality of pipes (122) installed so as to face the burner (103) with the combustion chamber (102) interposed therebetween so that combustion gas by combustion of the burner (103) passes through the interior thereof; A first associated support plate 113 on which one end close to the burner 103 is fixed in the association 122; Covering an upper portion of the first associated support plate 113 to prevent the combustion gas from directly contacting the first associated support plate 113, while the combustion gas flows through the association 122. The combustion gas flow guide 200-4 having a through hole 215-4 formed at a position corresponding to 122.

The combustion gas flow guide 200-4 may be made of a heat insulating material having a predetermined thickness.

According to the oil boiler of the present invention, by providing a combustion gas flow guide for guiding the combustion gas to the edge, it is possible to prevent the combustion gas from directly contacting the associated support plate to suppress the generation of bubbles, improve the thermal efficiency, and reduce noise Can be reduced.

1 is a cross-sectional view showing a conventional downward combustion general type oil boiler

2 is a cross-sectional view showing an oil boiler according to the first embodiment of the present invention.

3 shows a combustion gas flow guide according to the first embodiment;

4 is a cross-sectional view showing an oil boiler according to a second embodiment of the present invention.

5 is a cross-sectional view showing an oil boiler according to a third embodiment of the present invention.

6 is a sectional view showing an oil boiler according to a fourth embodiment of the present invention.

7 is a cross-sectional view showing an oil boiler according to a fifth embodiment of the present invention.

8 is a view showing the heat insulating material of FIG.

** Explanation of Codes **

1: oil boiler 101: water tank

102 combustion chamber 103 burner

110: boiler body 112: combustion chamber wall

113: first associated support plate 114: second associated support plate

121: hot water supply coil 122: connection

123: baffle plate 124: heating water barrier

200,200-1,200-2,200-3,200-4: Combustion gas flow guide

210: Euro guide 211,211-1,211-2: Guide plate

212-2, 212-3: Second guide plate 214,214-2,214-3: Guide side wall

220,220-1: Insulation material 215-4: Through hole

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

<First Embodiment>

2 is a cross-sectional view showing an oil boiler according to a first embodiment of the present invention, Figure 3 is a view showing a combustion gas flow guide according to the first embodiment.

The oil boiler 1 of the present invention includes a burner 103 for generating a flame, a combustion chamber wall 112 surrounding the combustion chamber 102 where combustion by the burner 103 occurs, and combustion of the burner 103. A plurality of pipes 122 through which combustion gas passes through the inside, the first and second connection support plates 113 and 114 of which the upper and lower ends of the tube 122 are fixed, respectively, and the burner. The combustion gas flow guide 200 is provided between the 103 and the first associated support plate 113 to block the combustion gas from flowing through the central portion and to guide the combustion gas to the edge portion.

A burner 103 is provided at an upper portion of the combustion chamber 102, and flames are formed in a downward direction of the flame generated by the burner 103.

The outside of the combustion chamber wall 112, the boiler body 110 is surrounded by spaced apart space.

Hot water coil 121 is provided in the space between the combustion chamber wall 112 and the boiler body 110 to surround the combustion chamber wall 112 outside. Inside the hot water supply coil 121, direct water supplied by the user's hot water request flows. Direct water flowing inside the hot water supply coil 121 is heat-exchanged with the heating water filled in the water tank 101, which is an external space of the hot water supply coil 121, and is supplied to the user as hot water.

The space between the tube 122 and the boiler body 110 is provided with a heating water barrier 124. The heating water diaphragm 124 prevents the heating water from flowing rapidly in the water tank 101 to allow sufficient heat exchange with the combustion gas flowing in the pipe 122.

The tube 122 is a cylindrical shape having a predetermined length in the vertical direction, the top and the bottom is open, the combustion gas flows through the open portion of the upper flows into the inner space and then open the lower portion of the open portion. Combustion gas is discharged through.

The baffle plate 123 is provided inside the plumb 122 to increase the time that the combustion gas stays in the space inside the plumb 122. The baffle plate 123 is arranged so that a plurality of pieces are staggered along the longitudinal direction of the tube 122 to improve the heat exchange efficiency by delaying the passage time of the combustion gas.

The first associated support plate 113 is coupled to the upper end of the association 122. An edge of the first associated support plate 113 is coupled to a lower end of the combustion chamber wall 112, and a first connection insertion hole (not shown) is inserted into a body portion of the first associated support plate 113 so that an upper end of the association 12 is inserted. 113a) is formed.

The second associated support plate 114 is coupled to the lower end of the association 122. An edge of the second associated support plate 114 is coupled to the lower end of the boiler body 110, and a second associated insertion hole is inserted into the body portion of the second associated support plate 114 so that the lower end of the association 122 is inserted. 114a) is formed.

The upper end and the lower end of the tube 122 are inserted into the first tube insertion hole 113a and the second tube insertion hole 114a, and the contact portions are respectively joined by welding.

The combustion gas flow guide 200 is composed of a flow guide 210 and the heat insulating material 220, it is installed to face the burner 103 with the combustion chamber 102 in between.

The flow guide 210 may include a guide plate 211 spaced upward from the first associated support plate 113 and a guide side wall extending upward from the edge of the guide plate 211 toward the burner 103. 214).

The heat insulating material 220 is to block the heat of the combustion gas from being transferred to the upper portion of the first associated support plate 114, and may be configured to vary the degree of heat blocking according to its thickness or material. The heat insulator 220 may be composed of a fire insulation material having both fire resistance and heat insulation to withstand high temperature heat.

The space between the guide side wall 214 and the combustion chamber wall 112 is formed to form a flow path of the combustion gas.

A guide support leg 213 having a predetermined height is formed on a lower surface of the guide plate 211 so that the flow path guide 210 can be supported in a state spaced apart from an upper surface of the first associated support plate 114.

The edge end portion of the guide plate 211 protrudes outward more than the outer surface of the guide side wall 214, so that the space between the guide side wall 214 and the combustion chamber wall 112 is further narrowed so that the combustion gas and Heat exchange of the heating water is to be made more smoothly.

The heating water inlet 115 and the heating water outlet 116 are provided to allow the heating water to flow into or out of the water tank 101. In addition, although not shown in the drawing, the inlet end and the outlet end of the hot water supply coil 121 are respectively connected to a water pipe (not shown) and a hot water pipe (not shown) provided through the boiler body 110.

In the oil boiler having such a configuration, the flow of combustion gas is as follows. That is, when combustion occurs in the burner 103, the combustion gas flows downward, and the flowing combustion gas is blocked by the heat insulator 220, and then upward flow is generated along the inner wall of the guide side wall 214. do. Thereafter, the combustion gas flows downward along the space between the guide side wall 214 and the combustion chamber wall 112. In this process, the combustion gas is primarily heat exchanged with the heating water of the water tank 101.

The combustion gas subjected to the first heat exchange flows downwardly and then flows into the inside of the pipe 122 and flows along the inner space of the pipe 122 so that heat is secondarily exchanged with the heating water of the external tank 101. .

As such, the combustion gas flows downward along the space between the guide side wall 214 and the combustion chamber wall 112, thereby improving thermal efficiency.

In addition, since the combustion gas flows in the spaced space between the guide side wall 214 and the combustion chamber wall 112, the temperature drops first, and then comes into contact with the first associated support plate 113, so that boiling does not occur.

In addition, since the heat insulating material 220 blocks the flow of the combustion gas, it is effective to prevent boiling by blocking heat transfer to the first associated support plate 113.

In the first embodiment described above, the configuration in which the flow path guide 210 and the heat insulating material 220 formed of the guide plate 211 and the guide side wall 214 are provided is described, but the guide side wall 214 and the heat insulating material 220 are It may also be configured as not provided.

That is, when the guide plate 211 is made thick, the combustion gas flows to the edge of the guide plate 211 and then a downward flow is formed, thereby preventing the heat of the combustion gas from being directly transmitted to the first associated support plate 113. This can prevent the occurrence of boiling. In this case, since the surface of the guide plate 211 may be oxidized, it is preferable to configure the guide plate 211 made of a high temperature oxidation resistant ferritic stainless steel.

Second Embodiment

4 is a cross-sectional view showing an oil boiler according to a second embodiment of the present invention.

The combustion gas flow guide 200-1 of the second embodiment is provided on the guide plate 211-1 and the guide plate 211 spaced upwardly from the first associated support plate 113 and the burner 103. It consists of a heat insulating material 220-1 to block the heat of the combustion gas generated in the transfer to the guide plate 211-1.

Even with such a configuration, the combustion gas flows downward toward the edge after the downward flow is blocked from the upper surface of the heat insulator 220-1, and then flows downward again. In this process, the first heat exchange with the heating water of the water tank 101 is performed. This is done.

Thereafter, the combustion gas flows to the upper surface of the first associated support plate 113 in a state where the temperature is lowered, so that heat exchange is performed, thereby preventing boiling.

Third Embodiment

5 is a sectional view showing an oil boiler according to a third embodiment of the present invention.

The combustion gas flow guide 200-2 of the third embodiment is spaced apart from the first guide plate 211-2 spaced upward from the first associated support plate 113 and the guide plate 211-2. The burner 103 is removed from the edges of the second guide plate 212-2 and the first guide plate 211-2 and the second guide plate 212-2 provided to form the space 213-2. It extends toward the guide side wall (214-2) for sealing the space inside the space (213-2).

The combustion gas flow guide 200-2 has the same configuration as the combustion gas flow guide 200 of the first embodiment, but instead of the heat insulator 220, the second guide plate 212-2 and the separation space 213-. 2) is different in that it is provided.

Due to this configuration, heat exchange is primarily performed while flowing downward along the space between the guide side wall 214-2 and the combustion chamber wall 112, thereby improving thermal efficiency.

In addition, it is possible to prevent the occurrence of boiling by blocking the transfer of the heat of the combustion gas directly to the first associated support plate 113.

In this case, the interior of the separation space 213-2 may be configured as an empty space, or may fill an object for blocking heat transfer.

The first guide plate 211-2 and the second guide plate 212-2 may be made of ferritic stainless steel for high temperature oxidation to prevent oxidation due to high temperature.

Fourth Embodiment

6 is a sectional view showing an oil boiler according to a fourth embodiment of the present invention.

The combustion gas flow guide 200-3 of the fourth embodiment is disposed between the first guide plate 211-3 and the guide plate 211-2 spaced upwardly from the first associated support plate 113. The edges of the second guide plate 212-3 and the first guide plate 211-2 and the second guide plate 212-3 provided to form the separation space 213-3 are connected to each other. It consists of the guide side wall 214-3 which seals the inside of space 213-3.

The fourth embodiment differs from the third embodiment in that the guide side walls 214-3 do not protrude upward from the second guide plate 212-3.

In this case as well, the space is formed by the separation space 213-2, thereby preventing the heat of the combustion gas from being directly transmitted to the first associated support plate 113, thereby preventing the occurrence of boiling.

In addition, since heat exchange is performed while flowing downward along the space between the guide side wall 214-3 and the combustion chamber wall 112, thermal efficiency may be improved.

Fifth Embodiment

7 is a cross-sectional view showing an oil boiler according to a fifth embodiment of the present invention, and FIG. 8 is a view showing the heat insulating material of FIG. 7.

The flue gas flow guide 200-4 of the fifth embodiment covers the upper portion of the first associated support plate 113 to block the combustion gas from directly contacting the first associated support plate 113, while the association ( The through hole 215-4 is formed at a position corresponding to the tube 122 to allow combustion gas to flow through the 122.

In this case, the combustion gas flow guide (200-4) is preferably made of a heat insulating material of a predetermined thickness.

According to such a configuration, the boiling gas can be prevented by directly preventing the combustion gas from directly contacting the upper surface of the first associated support plate 113 by the combustion gas flow guide 200-4.

As described above, the present invention is not limited to the above-described embodiments, and modifications apparent by those skilled in the art to which the present invention pertains may be made without departing from the technical spirit of the present invention claimed in the claims. It is possible that such modifications are within the scope of the present invention.

Claims (11)

A combustion chamber wall 112 surrounding the combustion chamber 102 where combustion by the burner 103 occurs; A plurality of pipes (122) installed so as to face the burner (103) with the combustion chamber (102) interposed therebetween so that combustion gas by combustion of the burner (103) passes through the interior thereof; A first associated support plate 113 on which one end close to the burner 103 is fixed in the association 122; A boiler body (110) filling a space between the combustion chamber wall (112) and a space between the tube (122) and heating water to form a water tank (101); It is provided between the burner 103 and the first associated support plate 113, and prevents the combustion gas due to the combustion of the burner 103 flows through the central portion of the burner 103 and the edge of the combustion chamber wall 112 Combustion gas flow guides (200,200-1,200-2,200-3) to flow through the space formed between the inner surface; Oil boiler The method of claim 1, The combustion gas flow guide 200, Oil boiler, characterized in that it comprises a guide plate 211 spaced apart from the first associated support plate 113 The method of claim 2, The oil boiler further comprises a guide side wall 214 extending from the edge of the guide plate 211 toward the burner 103. The method of claim 2, On the guide plate 211 is an oil boiler, characterized in that the heat insulating material 220 is provided to block the heat of the combustion gas generated by the burner 103 is transmitted to the guide plate 211. The method of claim 1, The combustion gas flow guide 200-1, A guide plate 211-1 spaced apart from the first associated support plate 113; A heat insulating material 220-1 provided on the guide plate 211 to block heat of the combustion gas generated by the burner 103 from being transferred to the guide plate 211-1; Oil boiler, characterized in that consisting of The method of claim 1, The combustion gas flow guide 200-2, A first guide plate 211-2 spaced apart from the first associated support plate 113; A second guide plate 212-2 provided to form a separation space 213-2 between the guide plate 211-2; A guide side wall 214-extending from the edges of the first guide plate 211-2 and the second guide plate 212-2 toward the burner 103 and sealing the interior of the separation space 213-2; 2); Oil boiler, characterized in that consisting of The method of claim 1, The combustion gas flow guide 200-3, A first guide plate 211-3 spaced apart from the first associated support plate 113; A second guide plate 212-3 provided to form a space 213-3 between the guide plate 211-2; A guide side wall 214-3 which connects edges of the first guide plate 211-2 and the second guide plate 212-3 to each other and seals the space inside the separation space 213-3; Oil boiler, characterized in that consisting of The method of claim 1, The portion of the combustion gas flow guide (200,200-1,200-2,200-3) in contact with the combustion gas is an oil boiler, characterized in that made of ferritic stainless steel for high temperature oxidation The method of claim 3, The edge end of the guide plate 211 is characterized in that the oil boiler further protrudes outward than the outer surface of the guide side wall 214 A combustion chamber wall 112 surrounding the combustion chamber 102 where combustion by the burner 103 occurs; A plurality of pipes (122) installed so as to face the burner (103) with the combustion chamber (102) interposed therebetween so that combustion gas by combustion of the burner (103) passes through the interior thereof; A first associated support plate 113 on which one end close to the burner 103 is fixed in the association 122; Covers an upper portion of the first associated support plate 113 to prevent the combustion gas from directly contacting the first associated support plate 113, while allowing the combustion gas to flow through the association 122. A combustion gas flow guide 200-4 having a through hole 215-4 formed at a position corresponding to 122; Oil boiler The method of claim 10, The combustion gas flow guide 200-4 is an oil boiler, characterized in that made of a heat insulating material of a predetermined thickness.

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