Water tube system of hot water boiler or multi-stage hot water boiler

Abstract

The present invention relates to a water tube system of a hot water boiler or a multi-stage hot water boiler, the system comprising a water tube unit which is wound in the spiral direction around an axis so as to move water from one side to the other side thereof, and which supplies hot water through heat exchange with combustion gas, wherein the water tube unit can be provided such that at least two rows of water tubes spaced from each other in the radial direction perpendicular to the axial direction or spaced in a staggered manner in the radial and circumferential directions are wound to cross each other, thereby forming a helical configuration.

Description

Water pipe system of a hot water boiler or multi-stage hot water boiler

[0001] The present invention relates to a water tube system for a hot water boiler or a multi-stage hot water boiler, and more specifically, to a water tube system for a hot water boiler or a multi-stage hot water boiler in which a water tube section installed in the combustion chamber of the hot water boiler or a multi-stage hot water boiler is provided in two rows in a radial direction and wound so as to intersect each other, thereby enabling improved heat transfer and improved efficiency of the hot water boiler.

[0002] Generally, a hot water boiler is a device that uses heat generated from burning fuel to heat water for use as heating water or for hot water consumption.

[0003] Heat exchange technology is applied to supply heating water and hot water in such hot water boilers, and conventional hot water boilers may be equipped to heat water circulating inside a heating tank or coil-type water tube by means of a heating means such as a burner.

[0004] For example, a single or multiple spiral-shaped water pipes may be installed outside a central heating means, and the structure may have a structure in which water passes through the inside of the water pipes and is heated by the heating means to provide hot water.

[0005] In the case of a hot water boiler having such spiral-shaped water tubes, since the water tubes are provided in the form of spiral coils, the total length of the water tubes can be made long within a short length of the tubes, allowing for the securing of a certain heat exchange efficiency in a compact size. In other words, a hot water boiler with spiral-shaped water tubes enables relatively rapid heating.

[0006] However, as the size and installation space of the hot water boiler are limited, the size of the heating means installed inside the boiler is inevitably restricted, and the length of the installed spiral water tube is also limited. Consequently, the amount of hot water supplied through the spiral water tube is inevitably significantly limited compared to the amount supplied from the heating tank. Furthermore, in the case of a hot water boiler equipped with spiral water tubes, there are problems such as temperature fluctuations, inefficient hot water supply, or reduced thermal efficiency when hot water is used for extended periods.

[0007] In addition, there is a problem in that heating a large amount of water inevitably consumes a lot of time and fuel costs.

[0008] Therefore, there is a need for a water tube system of a hot water boiler or a multi-stage hot water boiler that enables hot water supply in a short time and has good heat exchange efficiency, as well as a hot water boiler equipped with spiral water tubes.

[0009] The technical problem to be achieved by the present invention is to provide a water tube system for a hot water boiler or a multi-stage hot water boiler that is equipped with spiral water tubes, wherein the water tubes are arranged in two rows in a radial direction, and the two rows of water tubes are wound so as to cross each other in clockwise and counterclockwise directions with respect to the center of the axis, thereby increasing the turbulence intensity of the combustion gas that flows into the combustion chamber and exchanges heat with the water tubes, and thereby improving heat transfer from the combustion gas to the water tubes and improving the overall efficiency of the hot water boiler or the multi-stage hot water boiler.

[0010] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below.

[0011] A water pipe system of a hot water boiler according to an embodiment of the present invention for solving the problem is,

[0012] It includes a water pipe section that is wound in a spiral direction around an axis to move water from one side to the other and supplies hot water through heat exchange with combustion gas,

[0013] The above water pipe section is,

[0014] At least two rows of water tubes, spaced apart from each other in a radial direction perpendicular to the axial direction or spaced apart in a radial and circumferential direction, may be provided to be wound in an intersecting manner to form a spiral direction.

[0015] It may further include a pair of side support members provided at one end of the water pipe section and the tile end, respectively, to support and connect both ends of the water pipe section.

[0016] The above water pipe section is,

[0017] An end region coupled and supported by the above-mentioned side support member;

[0018] The above end region can be banded and wound spirally in one direction (clockwise or counterclockwise) and the other direction (the other) to form a heat exchange region that implements heat exchange.

[0019] The above two rows of water pipes are,

[0020] At least one first row of water pipes provided along the perimeter of the above-mentioned side support member; and

[0021] It includes a second row of water pipes provided along the perimeter of the above-mentioned side support member, which are spaced apart radially from the first row of water pipes or spaced apart in both radial and circumferential directions.

[0022] The first row of water pipes and the second row of water pipes may be provided to be wound in different directions, either clockwise or counterclockwise, and crossed over each other.

[0023] The first heat pipe is divided into a first end region coupled and supported by the side support member, and a first heat exchange region that is bent from the first end region and wound in a spiral shape in either a clockwise or counterclockwise direction.

[0024] The second row water pipe is coupled and supported by the side support member and can be divided into a second end area that is spaced apart in the vertical direction of the axial direction or spaced apart in the vertical direction of the axial direction and the circumferential direction, and a second heat exchange area that is bent in the second end area and wound in a spiral shape in either the clockwise or counterclockwise direction.

[0025] In addition, the water tube system of a multi-stage hot water boiler according to one embodiment of the present invention is,

[0026] A multi-stage combustion chamber section that generates and flows combustion gas and is equipped with at least two combustion chambers in multiple stages;

[0027] A water pipe section installed in each of the combustion chambers of the multi-stage combustion chamber section above, which moves water from one side to the other and supplies hot water through heat exchange with combustion gas; and

[0028] It includes side support members provided at one end of the water pipe section and the tile end, respectively, to support the one end of the water pipe section and the tile end, and

[0029] The above-mentioned water pipe section may be provided with at least two rows of water pipes that are spaced apart from each other in a radial direction perpendicular to the axial direction, or spaced apart in a radial and circumferential direction, so as to be wound in an intersecting manner to form a spiral direction.

[0030] The above-mentioned multi-stage combustion chamber section is,

[0031] A main combustion chamber located above the above-mentioned multi-stage combustion chamber section, which generates combustion gas through the combustion of fuel to achieve heat exchange; and

[0032] It may include a first combustion chamber located at the lower part of the main combustion chamber of the multi-stage combustion chamber section and receiving combustion gas generated in the main combustion chamber to perform heat exchange.

[0033] The above water pipe section is,

[0034] A first water pipe that is supported and coupled to the upper region of the above-mentioned side support member and is provided in the main combustion chamber; and

[0035] It may include a second water pipe provided in the first combustion chamber, which is supported and coupled to the lower region of the side support member below the first water pipe.

[0036] The above-mentioned side support member is,

[0037] A first outer support plate located on one side of the multi-stage combustion chamber section, with an upper portion forming a hollow connected to the main combustion chamber;

[0038] A second outer support plate located on the tile side of the multi-stage combustion chamber section above;

[0039] A first inner support plate that forms a hollow spaced apart from the lower end of the first outer support plate and forms one side of the first combustion chamber; and

[0040] It may include a second inner support plate that is spaced apart from the lower end of the second outer support plate and forms a tile side of the first combustion chamber.

[0041] The above-mentioned first water pipe is,

[0042] At least one first heat pipe is provided on the same circumference along the periphery of the side support member with respect to the axis of the main combustion chamber; and

[0043] It is provided along the periphery of the side support member with respect to the axis of the main combustion chamber, and includes a second row of water tubes spaced apart radially from the first row of water tubes or spaced apart in both radial and circumferential directions.

[0044] The first row of water pipes and the second row of water pipes may be provided to be wound in different directions, either clockwise or counterclockwise, and crossed over each other.

[0045] The first heat pipe is divided into a first end region that is supported and coupled to the first outer support plate and the second outer support plate, and a first heat exchange region that is bent from the first end region and wound in a spiral shape in either a clockwise or counterclockwise direction to exchange heat in the main combustion chamber.

[0046] The second row of water pipes may be divided into a second end region that is supported and coupled to the first outer support plate and the second outer support plate, and a second heat exchange region that is bent in the second end region and wound in a spiral shape in either a clockwise or counterclockwise direction, which is different from the first row of water pipes, and heat exchanged in the main combustion chamber.

[0047] The above second water pipe is,

[0048] At least one third row water tube provided on the same circumference along the periphery of the side support member with respect to the axis of the first combustion chamber; and

[0049] It includes a fourth row of water tubes that are provided along the periphery of the side support member with respect to the axis of the first combustion chamber, and are spaced apart radially from the third row of water tubes or spaced apart in both radial and circumferential directions.

[0050] The third row of water pipes and the fourth row of water pipes may be provided to be wound in different directions, either clockwise or counterclockwise, and crossed over each other.

[0051] The third heat pipe is divided into a third end region that is supported and coupled to the first inner support plate at the first outer support plate and the second inner support plate at the second outer support plate, and a third heat exchange region that is bent at the third end region and wound in a spiral shape in either a clockwise or counterclockwise direction to exchange heat in the first combustion chamber.

[0052] The above-mentioned fourth row water pipe may be divided into a fourth end region that is supported and coupled to the first inner support plate at the first outer support plate and the second inner support plate at the second outer support plate, and a second heat exchange region that is bent at the fourth end region and wound in a spiral shape in either a clockwise or counterclockwise direction, which is different from the third row water pipe, and heat exchanged in the main combustion chamber.

[0053] In addition, the water tube system of a multi-stage hot water boiler according to one embodiment of the present invention is,

[0054] A multi-stage combustion chamber section comprising a main combustion chamber that generates combustion gas, a first combustion chamber below the main combustion chamber, and a re-combustion chamber between the main combustion chamber and the first combustion chamber;

[0055] A water pipe section comprising a first water pipe provided in the main combustion chamber and a second water pipe provided in the first combustion chamber at the lower end of the first water pipe; and

[0056] It includes a side support member that combines and supports one side of the first water pipe and the second water pipe and the tile side, and

[0057] At least one of the first water pipe and the second water pipe may be provided in at least two rows in a vertical direction along the axial direction between the side support members and may be provided to be wound in a spiral shape intersecting in a clockwise or counterclockwise direction.

[0058] Other specific details of the present invention are included in the detailed description and drawings.

[0059] According to embodiments of the present invention, at least the following effects are achieved.

[0060] According to the present invention, water tubes installed in the combustion chamber of a hot water boiler or a multi-stage hot water boiler are arranged in two rows radially around the axis of the combustion chamber, and the two rows of water tubes are wound clockwise and counterclockwise around the axis of the combustion chamber, respectively, so as to intersect each other, thereby increasing the turbulence intensity of the combustion gas flowing into the combustion chamber and improving heat transfer through improved contact with the water tubes.

[0061] In addition, there is an advantage in that the heat exchange efficiency of the entire hot water boiler or multi-stage hot water boiler can be improved by having a water tube section equipped with two or more rows of water tubes that are wound in an intersecting manner as described above.

[0062] The effects according to the present invention are not limited to those exemplified above, and various other effects are included in this specification.

[0063] FIG. 1 is a schematic diagram of a water pipe system of a hot water boiler or a multi-stage hot water boiler system according to one embodiment of the present invention.

[0064] FIG. 2 is a schematic partial perspective view of a water tube system of a hot water boiler or a multi-stage hot water boiler system according to one embodiment of the present invention.

[0065] FIG. 3 is a partial drawing schematically showing the water tube section of a water tube system of a hot water boiler or a multi-stage hot water boiler system according to one embodiment of the present invention.

[0066] FIG. 4 is a schematic perspective view of a multi-stage hot water boiler system according to one embodiment of the present invention.

[0067] FIG. 5 is a schematic internal cross-sectional perspective view of a multi-stage hot water boiler system according to one embodiment of the present invention.

[0068] FIG. 6 is a perspective view showing a water tube system of the main combustion chamber of a multi-stage hot water boiler system according to one embodiment of the present invention.

[0069] FIG. 7 is a perspective view showing a water tube system of the first combustion chamber of a multi-stage hot water boiler system according to one embodiment of the present invention.

[0070] <Explanation of symbols for major parts of the drawing>

[0071] 10: Water tube system of a hot water boiler 12: Water tube section

[0072] 12a: End area 12b: Heat exchange area

[0073] 12x: 1st row water pipe 12xa: 1st end area

[0074] 12xb: 1st heat exchange zone 12y: 2nd heat water tube

[0075] 12ya: Second end region 12yb: Second heat exchange region

[0076] 16: Side support member 100: Water tube system of a multi-stage hot water boiler

[0077] 110: Multi-stage combustion chamber section 111: Main combustion chamber

[0078] 112: First combustion chamber 120: Water pipe section

[0079] 120a: End area 120b: Heat exchange area

[0080] 121: 1st crown 1211: 1st row crown

[0081] 1211a: First end region 1211b: First heat exchange region

[0082] 1212: Second row water pipe 1212a: Second end area

[0083] 1212b: Second heat exchange area 122: Second water tube

[0084] 1221: 3rd row water pipe 1221a: 3rd end area

[0085] 1221b: 3rd heat exchange zone 1222: 4th heat water tube

[0086] 1222a: 4th end area 1222b: 4th heat exchange area

[0087] 150: Partition member 160: Side support member

[0088] 161: First outer support plate 162: Second outer support plate

[0089] 163: First inner support plate 164: Second inner support plate

[0090] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0091] Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously.

[0092] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" are used in the sense that they do not exclude the presence or addition of one or more other components, steps, actions, and / or elements other than those mentioned. And, "and / or" includes each of the mentioned items and all combinations of one or more.

[0093] Furthermore, the embodiments described herein will be explained with reference to cross-sectional views and / or schematic drawings, which are exemplary illustrations of the invention. Accordingly, the form of the exemplary drawings may be modified due to manufacturing techniques and / or tolerances, etc. Therefore, the embodiments of the invention are not limited to the specific forms depicted but include variations in form resulting from the manufacturing process. Additionally, in each drawing of the invention, each component may be depicted slightly enlarged or reduced for convenience of explanation. Throughout the specification, the same reference numerals refer to the same components.

[0094] Hereinafter, the present invention will be described with reference to drawings illustrating a water tube system of a hot water boiler or a multi-stage hot water boiler according to embodiments of the present invention.

[0095] FIG. 1 is a schematic diagram of a water tube system (10, 100) of a hot water boiler or a multi-stage hot water boiler system according to one embodiment of the present invention.

[0096] FIG. 2 is a schematic partial perspective view of a water tube system (10, 100) of a hot water boiler or a multi-stage hot water boiler system according to one embodiment of the present invention.

[0097] FIG. 3 is a schematic partial drawing showing the water tube section (12) of the water tube system (10, 100) of a hot water boiler or multi-stage hot water boiler system according to one embodiment of the present invention.

[0098] Referring to FIGS. 1 to 3, a hot water boiler or a multi-stage hot water boiler according to one embodiment of the present invention may be provided with a water tube section (12).

[0099] The water pipe section (12) is wound in a spiral direction around an axis to move water from one side to the other and can be provided to supply hot water through heat exchange with combustion gas.

[0100] The water pipe section (12) may be configured such that at least two rows of water pipes are wound radially around the axial direction, with one side and the other side spaced apart in the radial direction or in the radial and circumferential directions, and are wound in two rows radially to form a spiral direction.

[0101] Specifically, one end of the water pipe section (12) and the tile side end may be provided on one side and the other side of the water pipe section (12) and may be connected to a pair of side support members (16) that support one side of the water pipe section (12) and the tile side.

[0102] The water pipe section (12) can be divided into an end area (12a) and a heat exchange area (12b).

[0103] First, the end region (12a) of the water pipe section (12) is a part that is connected and supported by the side support member (16).

[0104] Additionally, the heat exchange region (12b) of the water pipe section (12) is bent at the end region (12a) and can be provided between a pair of side support members (16). Additionally, the heat exchange region (12b) is a part provided to implement heat exchange by being wound in a spiral shape in one direction, either clockwise or counterclockwise, and in the other direction.

[0105] As described above, the water pipe section (12) may be provided with at least two rows of water pipes, specifically including a first row of water pipes (12x) and a second row of water pipes (12y).

[0106] The first row of water pipes (12x) is provided between a pair of side support members (16), and can be provided such that at least one end and one end are connected and supported along the perimeter of the side support members (16).

[0107] The second row of water pipes (12y) is provided between a pair of side support members (16), and one end and the other end are provided along the circumference of the side support members (16), and may be provided so as to be spaced apart radially from the first row of water pipes (12x) or spaced apart in both radial and circumferential directions.

[0108] That is, the first and second ends of the first row of water tubes (12x) and the second row of water tubes (12y) may be provided in the same radial direction centered on an axis (which is the central axis of the water tube section (12), and may be the same as the central axis of the combustion chamber housing the water tube section (12) (if it is a multi-stage hot water boiler, the main combustion chamber and the first combustion chamber)). Alternatively, the first and second ends of the first row of water tubes (12x) and the second row of water tubes (12y) may be provided at offset positions that are separated not only in the radial direction (radial direction) but also in the circumferential direction relative to the central axis.

[0109] The first row water pipe (12x) and the second row water pipe (12ay) are configured to be wound in a spiral shape between one end and the other end connected to the side support member (16) to allow water to flow, wherein the first row water pipe (12x) is wound in a spiral shape in either a clockwise or counterclockwise direction, and the second row water pipe (12y) is configured to be wound in a spiral shape in a direction different from the first row water pipe (12x), either clockwise or counterclockwise. Accordingly, the first row water pipe (12x) and the second row water pipe (12y) may be configured to be wound in an alternating manner in different directions, either clockwise or counterclockwise.

[0110] As described above, the water pipe section (12) includes an end region (12a) and a heat exchange region (12b). Specifically, the first heat pipe (12x) may include a first end region (12xa) and a first heat exchange region (12xb), and the second heat pipe (12y) may include a second end region (12ya) and a second heat exchange region (12yb).

[0111] The first end region (12xa) is a portion that is coupled and supported by the side support member (16), and the first heat exchange region (12xb) is a portion that is bent from the first end region (12xa) and wound in a spiral shape in either a clockwise or counterclockwise direction. Additionally, the second end region (12ya) is a portion that is coupled and supported by the side support member (16), and may be spaced outwardly in the vertical direction of the axial direction from the first end region (12xa), or spaced outwardly in the vertical direction of the axial direction and the circumferential direction. Additionally, the second heat exchange region (12yb) is a portion that is bent from the second end region (12ya) and wound in a spiral shape in either a clockwise or counterclockwise direction, intersecting with the first heat water tube (12x).

[0112] In this way, the water pipe section (12) is arranged in at least two rows of inner and outer water pipes, and the two rows are wound by crossing each other in clockwise and counterclockwise directions.

[0113] As each end region (12a) of the water pipes is spaced apart from each other and intersected in the heat exchange region (12b), the turbulence of the combustion gas flowing in the heat exchange region (12b) is increased, thereby expanding the irregular contact with the water pipe section (12), and thereby improving the heat transfer effect or heat exchange effect.

[0114] In the following, the configuration in which the above-mentioned water tube section (12) is installed in a multi-stage hot water boiler is described in detail, but it is not limited thereto, and it is obvious that it can also be installed in a hot water boiler.

[0115] FIG. 4 is a schematic perspective view of a multi-stage hot water boiler system (100) according to one embodiment of the present invention.

[0116] FIG. 5 is a schematic internal cross-sectional perspective view of a multi-stage hot water boiler system (100) according to one embodiment of the present invention.

[0117] FIG. 6 is a perspective view showing a water tube system of the main combustion chamber (111) of a multi-stage hot water boiler system (100) according to one embodiment of the present invention.

[0118] FIG. 7 is a perspective view showing a water tube system of a first combustion chamber (112) of a multi-stage hot water boiler system (100) according to one embodiment of the present invention.

[0119] Referring to FIGS. 4 to 7, a multi-stage hot water boiler system (100) according to one embodiment of the present invention may include a combustion chamber section (110) and a water tube section (120).

[0120] The multi-stage combustion chamber section (110) may be provided to have at least two stages of multi-stage combustion chambers.

[0121] The multi-stage combustion chamber section (110) may include a main combustion chamber (111) and a first combustion chamber (112), and the inner side of the multi-stage combustion chamber section (110) may be provided with a water pipe section (120) and a side support member (160) to be described later.

[0122] The main combustion chamber (111) is located at the top of the multi-stage combustion chamber section (110) and can be configured to generate combustion gas through the combustion of fuel and to perform heat exchange with water flowing through the water pipe section (120) described later, specifically the first water pipe (121).

[0123] The first combustion chamber (112) is located below the main combustion chamber (111) and below the multi-stage combustion chamber section (110), and can be configured to receive combustion gas generated in the main combustion chamber (111) and to perform heat exchange with water flowing through the water pipe section (120), specifically the second water pipe (122), which will be described later.

[0124] The water pipe section (120) may be installed in a multi-stage combustion chamber section (110) in at least two stacked layers and configured to move water from one side of the multi-stage combustion chamber section (110) to the tile side while enabling heat exchange with the combustion gas of the multi-stage combustion chamber. Additionally, as described above, the water pipe section (120) may be configured such that at least two rows of water pipes are spaced apart from each other in a radial direction perpendicular to the axial direction, or spaced apart in a radial and circumferential direction, and are wound to intersect each other to form a spiral direction.

[0125] A water pipe section (120) according to one embodiment of the present invention may include a first water pipe (121) and a second water pipe (122). The first water pipe (121) may be provided in the main combustion chamber (111), and the second water pipe (122) may be provided in the first combustion chamber (112) and installed in multiple stages. The specific configuration of the first water pipe (121) and the second water pipe (122) may be described later.

[0126] Side support members (160) are provided on both inner sides of the multi-stage combustion chamber section (110) and can be provided to form the main combustion chamber (111) and the first combustion chamber (112) together with a member (hereinafter referred to as 'partition member (150)') that supports one side and the tile side end of the water pipe section (120) respectively and partitions the main combustion chamber (111) and the first combustion chamber (112).

[0127] The side support member (160) may include a first outer support plate (161), a second outer support plate (162), a first inner support plate (163), and a second inner support plate (164).

[0128] The first outer support plate (161) is located on one side of the multi-stage combustion chamber section (110) and forms the side of the main combustion chamber (111). It may be provided with an upper region that forms a hollow connected to the main combustion chamber (111) and a lower region that corresponds to the side of the first combustion chamber (112).

[0129] The second outer support plate (162) is located on the tile side of the multi-stage combustion chamber section (110) and may be provided with an upper area forming the other side of the main combustion chamber (111) and a lower area forming the side of the first combustion chamber (112).

[0130] The first inner support plate (163) may be mounted at a predetermined distance from the lower region of the first outer support plate (161). The first inner support plate (163) forms a hollow that is connected to the first combustion chamber (112) and is provided so that combustion air flowing between the partition members (150) can flow into the first combustion chamber (112). The first inner support plate (163) may be provided to form one side of the first combustion chamber (112).

[0131] The second inner support plate (164) may be mounted at a predetermined distance from the lower region of the second outer support plate (162). The second inner support plate (164) may form the tile side of the first combustion chamber (112).

[0132] One side of the first water pipe (121) is provided to penetrate the first outer support plate (161), and the tile side of the first water pipe (121) may be provided to penetrate the second outer support plate (162). The first water pipe (121) may be provided in a spiral shape between the first outer support plate (161) and the second outer support plate (162).

[0133] In addition, the first water pipe (121) is provided in a cylindrical shape that is wound in a spiral shape.

[0134] The water flowing from the first outer support plate (161) to the second outer support plate (162) through the first water pipe (121) may have a structure in which it exchanges heat with the combustion gas of the main combustion chamber (111) and is discharged.

[0135] One side of the second water pipe (122) is provided to penetrate the first outer support plate (161) and the first inner support plate (163), and the tile side of the second water pipe (122) may be provided to penetrate the second inner support plate (164) and the second outer support plate (162). The second water pipe (122) may be provided in a spiral shape between the first inner support plate (163) and the second inner support plate (164).

[0136] In addition, the second water pipe (122) is provided in a cylindrical shape that is wound in a spiral shape.

[0137] The water flowing from the first inner support plate (163) to the second inner support plate (164) through the second water pipe (122) may have a structure in which it exchanges heat with the combustion gas of the first combustion chamber (112) and is discharged.

[0138] The configuration of the first water pipe (121) and the second water pipe (122) described above can be explained in more detail.

[0139] The first water pipe (121) may include a first row water pipe (1211) and a second row water pipe (1212) wound in at least two rows in an inner part and an outer part around the axis of the main combustion chamber (111), and the second water pipe (122) may include a third row water pipe (1221) and a fourth row water pipe (1222) wound in at least two rows in an inner part and an outer part around the axis of the first combustion chamber (112).

[0140] The first row water tube (1211) is formed in a cylindrical shape around the axis of the main combustion chamber (111) and may have a structure that is wound spirally inside the second row water tube (1212). Additionally, one end and the other end of the first row water tube (1211) may be provided with at least one side support member (160) on the same circumference along the perimeter of the upper region of the first outer support plate (161) and the upper region of the second outer support plate (162). Specifically, the end of the first row water tube (1211) and the aforementioned end region (referred to as the 'first end region' here) may be supported and coupled to the first outer support plate (161) and the second outer support plate (162), respectively. Additionally, a heat exchange area (hereinafter referred to as the "first heat exchange area") may be provided between the first end area of ​​one end of the first column water tube (1211) and the first end area of ​​the second end. The first heat exchange area is formed by bending from the first end area and winding in a spiral shape in either a clockwise or counterclockwise direction, and is configured to be wound into the inner side of the second column water tube (1212) as described above.

[0141] The second row of water pipes (1212) is formed in a cylindrical shape around the axis of the main combustion chamber (111) and may have a structure that is wound spirally on the outside of the first row of water pipes (1211). In particular, the winding direction of the second row of water pipes may have a structure that is wound in the opposite direction to the winding direction of the second row of water pipes (1212). Additionally, one end and the other end of the second row of water pipes (1212) may be provided along the perimeter of each side support member (160), specifically the upper area of ​​the first outer support plate (161) and the upper area of ​​the second outer support plate (162).

[0142] Additionally, regarding the position where the second row water tube (1212) is connected to the first outer support plate (161) and the second outer support plate (162), it may be connected at a position spaced apart only in the radial direction from the first row water tube (1211) with respect to the axis of the main combustion chamber (111), or at a position spaced apart in both the radial and circumferential directions.

[0143] Specifically, the end of the second row water tube (1212) and the aforementioned end region (here referred to as the 'second end region') can be supported and coupled to the first outer support plate (161) and the second outer support plate (162), respectively. Additionally, a heat exchange region (hereinafter referred to as the 'second heat exchange region') can be provided between the second end region at one end of the second row water tube (1212) and the second end region at the other end. The second heat exchange region is formed by bending from the second end region and winding in a spiral shape in either a clockwise or counterclockwise direction, and is configured to be wound to the outside of the first row water tube (1212) as described above.

[0144] As described above, the first row of water tubes (1211) is wound in either a clockwise or counterclockwise direction, and the second row of water tubes (1222) is wound in a direction different from the direction in which the first row of water tubes is wound, either clockwise or counterclockwise, and may have a structure in which they are wound while crossing each other in the heat exchange area.

[0145] The third row water tube (1221) is formed cylindrically around the axis of the first combustion chamber (112) and may have a structure that is wound spirally inside the fourth row water tube (1222). Additionally, one end and the other end of the third row water tube (1211) may be provided such that at least one is provided on the same circumference along the periphery of each side support member (160), specifically the first outer support plate (161) and the second outer support plate (162). Specifically, the end of the third row water tube, for example, the end region of one end of the third row water tube (referred to as the 'third end region' here), may be supported and connected by penetrating the first outer support plate (161) and the first inner support plate (163). Additionally, the end region of the tile end of the third row water tube (1221) (here referred to as the 'third end region') can be supported and connected by penetrating the second outer support plate (162) and the second inner support plate (164). Additionally, a heat exchange region (hereinafter referred to as the 'third heat exchange region') can be provided between the third end region of one end of the third row water tube (1221) and the third end region of the tile end. The third heat exchange region is configured to be bent from the third end region and wound in a spiral shape in either a clockwise or counterclockwise direction, and wound into the inside of the fourth row water tube (1222) as described above.

[0146] The fourth row of water pipes (1222) is formed in a cylindrical shape around the axis of the first combustion chamber (112) and may have a structure that is wound spirally on the outer side of the third row of water pipes (1222). In particular, the winding direction of the fourth row of water pipes (1222) may have a structure that is wound in the opposite direction to the winding direction of the third row of water pipes (1221). Additionally, one end of the fourth row of water pipes (1222) may be coupled and supported on one side of the side support member (160), specifically on the lower region of the first outer support plate (161) and on a first inner support plate spaced apart from the lower region of the first outer support plate, and may be provided along the circumferential perimeter around the axis. Additionally, the tile end of the fourth row of water pipes (1222) is coupled and supported on the other side of the side support member (160), specifically on the lower region of the second outer support plate (162) and on the first inner support plate (164) which is spaced apart from the lower region of the second outer support plate (162), and may be provided along the circumferential circumference around the axis.

[0147] That is, regarding the position where one end of the fourth row water pipe (1222) and the tile end are joined, first, one end of the fourth row water pipe (1222) may be joined to a position spaced only in the radial direction of the first outer support plate (161) and the first inner support plate (163) from the third row water pipe (1221) with respect to the axis of the first combustion chamber (112), or it may be joined to a position spaced apart in both the radial and circumferential directions. Additionally, the tile end of the fourth row water pipe (1222) may be joined to a position spaced only in the radial direction of the second outer support plate (162) and the second inner support plate (164) from the third row water pipe (1221) with respect to the axis of the first combustion chamber (112), or it may be joined to a position spaced apart in both the radial and circumferential directions.

[0148] Specifically, the end of the fourth row water pipe (1222) and the aforementioned end region (here referred to as the 'fourth end region') can be supported and coupled to the lower region of the first outer support plate (161) and the first inner support plate (163), and the lower region of the second outer support plate (162) and the second inner support plate (164), respectively. Additionally, a heat exchange region (hereinafter referred to as the 'fourth heat exchange region') can be provided between the fourth end region at one end of the fourth row water pipe (1222) and the fourth end region at the other end. The fourth heat exchange region is formed by bending from the fourth end region and winding in a spiral shape in either a clockwise or counterclockwise direction, and is configured to be wound to the outside of the third row water pipe (1221) as described above.

[0149] As described above, the third row of water tubes (1221) is wound in either a clockwise or counterclockwise direction, and the fourth row of water tubes (1222) is wound in a direction different from the direction in which the third row of water tubes is wound, either clockwise or counterclockwise, and may have a structure in which they are wound while crossing each other in the heat exchange area.

[0150] Accordingly, the water tube section provided in the multi-stage hot water boiler, specifically the multi-stage water tube, is positioned in at least two radial directions and has a structure that is wound inward and outward, with one winding clockwise and the other counterclockwise, thereby amplifying the turbulent effect during the flow of combustion gas, and as a result, it is possible to improve heat transfer and heat exchange efficiency.

[0151] A person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention.

[0152] The present invention is industrially applicable in the field of water tube system technology for a hot water boiler or a multi-stage hot water boiler, wherein a water tube section installed in the combustion chamber of a hot water boiler or a multi-stage hot water boiler is provided in two radial rows and wound so as to cross each other, thereby enabling improved heat transfer and improved efficiency of the hot water boiler.

Claims

1. It includes a water pipe section that is wound in a spiral direction around an axis to move water from one side to the other and supplies hot water through heat exchange with combustion gas, The above water pipe section is, At least two rows of water tubes, spaced apart from each other in a radial direction perpendicular to the axial direction or spaced apart in the radial and circumferential directions, are wound intersectingly to form a spiral direction. Water pipe system of a hot water boiler.

2. In Paragraph 1, A pair of side support members further comprising, respectively provided at one end of the water pipe section and the tile end, supporting and connecting both ends of the water pipe section. Water pipe system of a hot water boiler.

3. In Paragraph 2, the above-mentioned water pipe portion is, An end region coupled and supported by the above-mentioned side support member; The above end region is banded and wound spirally in one direction (clockwise or counterclockwise) and the other direction, respectively, to form a heat exchange region that implements heat exchange, Water pipe system of a hot water boiler.

4. In claim 2, the two rows of water pipes are, At least one first row of water pipes provided along the perimeter of the above-mentioned side support member; and It includes a second row of water pipes provided along the perimeter of the above-mentioned side support member, which are spaced apart radially from the first row of water pipes or spaced apart in both radial and circumferential directions. The first row of water pipes and the second row of water pipes are provided to be wound in different directions and intersected in either a clockwise or counterclockwise direction. Water pipe system of a hot water boiler.

5. In Paragraph 4, The first heat pipe is divided into a first end region coupled and supported by the side support member, and a first heat exchange region that is bent from the first end region and wound in a spiral shape in either a clockwise or counterclockwise direction. The second row water pipe is coupled and supported by the side support member, and is divided into a second end region that is spaced apart in the vertical direction of the axial direction or spaced apart in the vertical direction of the axial direction and the circumferential direction from the first end region, and a second heat exchange region that is bent in the second end region and wound in a spiral shape in either the clockwise or counterclockwise direction. Water pipe system of a hot water boiler.

6. A multi-stage combustion chamber section that generates and flows combustion gas and is equipped with at least two combustion chambers in multiple stages; A water pipe section installed in each of the combustion chambers of the multi-stage combustion chamber section above, which moves water from one side to the other and supplies hot water through heat exchange with combustion gas; and It includes side support members provided at one end of the water pipe section and the tile end, respectively, to support the one end of the water pipe section and the tile end, and The above-mentioned water pipe section is configured such that at least two rows of water pipes, spaced apart from each other in a radial direction perpendicular to the axial direction or spaced apart in the radial and circumferential directions, are wound intersectingly to form a spiral direction. Water tube system of a multi-stage hot water boiler.

7. In claim 6, the multi-stage combustion chamber portion is, A main combustion chamber located above the above-mentioned multi-stage combustion chamber section, which generates combustion gas through the combustion of fuel to achieve heat exchange; and A first combustion chamber located at the lower part of the main combustion chamber of the multi-stage combustion chamber section, which receives combustion gas generated in the main combustion chamber and implements heat exchange. Water tube system of a multi-stage hot water boiler.

8. In claim 7, the above-mentioned water pipe portion is, A first water pipe that is supported and coupled to the upper region of the above-mentioned side support member and is provided in the main combustion chamber; and A second water pipe provided in the first combustion chamber, which is supported and coupled to the lower region of the side support member below the first water pipe. Water tube system of a multi-stage hot water boiler.

9. In claim 8, the side support member is, A first outer support plate located on one side of the multi-stage combustion chamber section, with an upper portion forming a hollow connected to the main combustion chamber; A second outer support plate located on the tile side of the multi-stage combustion chamber section above; A first inner support plate that forms a hollow spaced apart from the lower end of the first outer support plate and forms one side of the first combustion chamber; and A second inner support plate forming a tile side of the first combustion chamber, spaced apart from the lower end of the second outer support plate. Multistage hot water boiler system.

10. In claim 9, the first water pipe is At least one first heat pipe is provided on the same circumference along the periphery of the side support member with respect to the axis of the main combustion chamber; and It is provided along the periphery of the side support member with respect to the axis of the main combustion chamber, and includes a second row of water tubes spaced apart radially from the first row of water tubes or spaced apart in both radial and circumferential directions. The first row of water pipes and the second row of water pipes are provided to be wound in different directions and intersected in either a clockwise or counterclockwise direction. Water tube system of a multi-stage hot water boiler.

11. In Paragraph 10, The first heat pipe is divided into a first end region that is supported and coupled to the first outer support plate and the second outer support plate, and a first heat exchange region that is bent from the first end region and wound in a spiral shape in either a clockwise or counterclockwise direction to exchange heat in the main combustion chamber. The second row water tube is divided into a second end region that is supported and coupled to the first outer support plate and the second outer support plate, and a second heat exchange region that is bent from the second end region and wound in a spiral shape in either a clockwise or counterclockwise direction, which is the other direction from the first row water tube, and exchanges heat in the main combustion chamber. Water tube system of a multi-stage hot water boiler.

12. In claim 9, the second water pipe is At least one third row water tube provided on the same circumference along the periphery of the side support member with respect to the axis of the first combustion chamber; and It includes a fourth row of water tubes that are provided along the periphery of the side support member with respect to the axis of the first combustion chamber, and are spaced apart radially from the third row of water tubes or spaced apart in both radial and circumferential directions. The above third row water pipe and the above fourth row water pipe are provided to be wound in different directions and intersected in either a clockwise or counterclockwise direction. Water tube system of a multi-stage hot water boiler.

13. In Paragraph 12, The third heat pipe is divided into a third end region that is supported and coupled to the first inner support plate at the first outer support plate and the second inner support plate at the second outer support plate, and a third heat exchange region that is bent at the third end region and wound in a spiral shape in either a clockwise or counterclockwise direction to exchange heat in the first combustion chamber. The above-mentioned fourth row water tube is divided into a fourth end region that is supported and coupled to the first inner support plate at the first outer support plate and the second inner support plate at the second outer support plate, and a second heat exchange region that is bent from the fourth end region and wound in a spiral shape in one direction other than the third row water tube, either clockwise or counterclockwise, to exchange heat in the main combustion chamber. Water tube system of a multi-stage hot water boiler.

14. A multi-stage combustion chamber section comprising a main combustion chamber that generates combustion gas, a first combustion chamber below the main combustion chamber, and a re-combustion chamber between the main combustion chamber and the first combustion chamber; A water pipe section comprising a first water pipe provided in the main combustion chamber and a second water pipe provided in the first combustion chamber at the lower end of the first water pipe; and It includes a side support member that combines and supports one side of the first water pipe and the second water pipe and the tile side, and At least one of the first water pipe and the second water pipe is provided in at least two rows in a vertical direction along the axial direction between the side support members and is provided to be wound in a spiral shape intersecting in a clockwise or counterclockwise direction. Water tube system of a multi-stage hot water boiler.

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