KR20110016560A - Boiler using spiral structure and manufacturing method of the heat exchanger - Google Patents

Abstract

PURPOSE: A boiler using a spiral structure and a method of manufacture thereof are provided to secure high thermal efficiency by increasing a heat exchanging area and the retention time of combustion gas. CONSTITUTION: A boiler using a spiral structure comprises a water pipe(20). An inner line(22) and an outside line(24) of the water pipe are formed in spiral structure from the center to outside. The water pipe and a furnace are formed between the inner line and outside by turns. A plurality of spiral pipes is consecutively arranged from center to outside.

Description

Boiler using spiral structure and its manufacturing method {BOILER USING SPIRAL STRUCTURE AND MANUFACTURING METHOD OF THE HEAT EXCHANGER}

The present invention relates to a boiler using a spiral structure and a method of manufacturing the same, and more particularly, by arranging a water pipe having a spiral structure from the center side to the outside from which a heat source is introduced, so that a water channel and a combustion furnace are configured, the combustion gas The present invention relates to a boiler using a spiral structure circulating from the center side to the outside in the form of a spiral to increase the residence time and heat exchange area.

Boiler, which is a kind of heat exchanger, is a device for generating high temperature / high pressure steam or hot water by heating water, and it is classified into related boiler, water pipe boiler and special boiler (waste heat boiler, electric boiler, special fluid boiler). Can be.

At this time, unlike the associated boiler which is configured to heat the water around the tube by supplying a high temperature gas into the tube, the water pipe boiler is a method of heating the water in the tube by the hot gas circulating around the outside of the tube is more than the associated boiler It can produce a lot of steam at higher pressures and temperatures and is now widely used in homes and various industries.

On the other hand, various proposals are made as follows to increase the thermal efficiency of such a water pipe boiler.

Korean Utility Model Publication No. 1984-0001311 "Boiler" refers to a tubular casing having an exhaust duct, a pair of annular chambers installed at the upper and lower ends of the tubular casing, and a pair of upper annular chambers of the annular chamber. A large number of inner passages surrounding the attention of the burner disposed from the central opening of the chamber toward the inside of the tubular casing and passing from the combustion chamber side near one of the pair of annular chambers to the outside of the other annular chamber. A pair of annular chambers communicate with each other through a cylindrical combustion chamber wall of water pipes and a plurality of conduits that concentrically surround the small combustion chamber wall and pass from the inside of the other annular chamber to the outside of the annular chamber. In a boiler composed of flue-walls, the addition of the furnace wall to the combustion chamber wall near one annular water chamber is connected to the inner flue other than the association of the combustion chamber wall. A technique of forming a gas passage and installing the inlet of the flue wall in a manner opposite to the outlet of the flue of the combustion chamber so that the combustion gas passing through the additional gas passage and the combustion gas having passed through the combustion chamber wall is introduced. I'm proposing.

Japanese Laid-Open Patent Publication No. 9-257203 "Multi-pipe Boiler" is an electric combustion chamber supporting the upper and lower ends of a combustion chamber with a burner formed from the upper side and a lower portion of the combustion chamber with a lower portion of the upper tube and the lower tube. The heating tubes and the heating tubes are connected to each other while adjacent to the plurality of heating tubes arranged in the annular form on the outer circumferential side of the annular portion formed by the plurality of heating tubes and annular heating tubes arranged in an annular fashion. During the process, the combustion gas in the electric combustion chamber is connected to the combustion gas passage and the combustion combustion gas passage formed between the heat-resistant heating tube and the external heating tube by the electric heat-heating tube and the heat-heating tube. Gas inlet part provided on the electric heat-resistant heating tube side for drawing and gas provided on the electric heat-heating tube side to discharge the combustion gas flowing through the electric combustion gas passage to the outside In a multi-tubular perfusion boiler having an outlet section, the electric furnace is connected to a lower tube attack on one end of the outer circumference, and a flat shape in which a water supply pipe is connected to one end of the center side is swirled, and the economizer tube and the economizer tube It proposes the technique formed by the shield pin which connects a nomine tube and a lower tube big fish.

Republic of Korea Patent Publication No. 10-0676163 "Water pipe boiler" is composed of a plurality of water pipes, is composed of a ring of the first water pipe having a first opening and a plurality of water pipes, and has a second opening It consists of an annular 2nd water pipe row, arrange | positions the said 2nd water pipe row on the outer side of a 1st water pipe row, and provides a combustion chamber inside the 1st water pipe row 4, and between a 1st water pipe row, Proposing a technology for forming a gas passage from the opening to the second opening, and having the high temperature reverse heat transfer surface structure, the mid temperature reverse heat transfer surface structure, and the low temperature reverse heat transfer surface structure from the upstream side according to the flow of the gas. have.

Japanese Patent Laid-Open No. 2002-243101 "Exhaust Gas Boiler" forms an exhaust gas inlet by using a trimmer in a heat recovery section formed by an outer wall of a can, and forms an exhaust gas inlet between an electric can body and an electric trimmer. By arranging heat transfer tubes, the exhaust gas boiler which increased the heat recovery amount is proposed by making effective use of a heat transfer surface.

Republic of Korea Patent Publication No. 10-0773260 "Steam boiler with a combustion chamber of the spiral structure" is a sealed housing having a water supply pipe on one side and the steam discharge pipe on the upper side, and is installed by the side of the fixture into the inside of the housing and cylindrical The inner casing having the combustion chamber sealed by the gas chamber, the heat exchange pipes attached to the inside of the inner casing, standing vertically, maintaining spiral linearity gradually spreading outward, and a flame guide tube are installed in the center of the combustion chamber. And a burner attached thereto, it is proposed a technology that expects the action that the high heat of the combustion chamber moves along the spiral structure to have heat exchange with the heat exchange pipes so that the waste heat finally discharged has little latent heat.

Such prior arts have tried to increase thermal efficiency by arranging water pipes in a spiral form to form a combustion furnace and a spiral form, thereby increasing the time for combustion heat (combustion gas) to stay in the combustion chamber. At this time, the prior art also proposes a form in which the technology of the associated boiler is applied to the water pipe boiler, but basically the structure of the water pipe boiler, so the present invention will be described as a structure of the water pipe boiler.

These prior arts can be expected to have higher thermal efficiency because the residence time of the combustion gas is increased compared to a general boiler having a water chamber installed along the inner or outer circumference of the combustion chamber.

However, these conventional techniques have a problem that the installation of the water pipe using a circular pipe, and to seal between the water pipes to form a spiral structure of a constant length, difficult to manufacture, increased cost, and the combustion furnace is a spy It will have a structural structure, but since the water pipe itself has a circular pipe structure, it will be difficult to expect a high thermal efficiency improvement.

On the other hand, in order to improve such a problem, Korean Patent Laid-Open Publication No. 10-2004-0041482 "Boiler having a combustion chamber of a spiral structure" has a first diaphragm and a second diaphragm inside the combustion chamber at regular intervals. In the structure of the spiral structure of the spiral structure is diffused to the outside, the spiral chamber has been proposed a technique for forming a combustion chamber.

However, such a prior art has a high level of skill and is difficult to put into practice due to low productivity in arranging and fixing two diaphragms at a constant interval in a spiral form.

Therefore, the present invention has been proposed to solve the problems of the prior art, by arranging the water pipe in a spiral structure from the center side to the outside from which the heat source is introduced, so that a water channel and a combustion furnace are formed, the combustion gas is in the form of a spiral. It is an object of the present invention to provide a boiler and a manufacturing method using a new type spiral structure which can be circulated from the center of the furnace to the outside to increase the residence time and the heat exchange area to expect higher thermal efficiency.

In particular, the present invention is a manufacturing technique generally used by forming a spiral water pipe by arranging a plurality of spiral pipes formed so that inner and outer surfaces correspond to the curvature of the spiral from the center side into which the heat source is introduced to the outside. It is an object of the present invention to provide a boiler and a method of manufacturing the same using a new type of spiral structure that enables the use of the apparatus.

In addition, the present invention is arranged in a spiral structure from the center side to the outside of the heat source is introduced into the spiral structure so that the water channel and the combustion path is formed, the combustion gas induction plate on the combustion furnace is inclined so as to be lowered in the outer spiral direction Providing a boiler and a manufacturing method using a new type spiral structure to induce the combustion gas to flow downward to the outside direction to ensure a uniform temperature distribution throughout the up and down direction to the outside of the water pipe For other purposes.

According to a feature of the present invention for achieving the above object, the present invention, the inner line 22 and the outer line 24 is formed in a spiral structure from the center side to the outside of the heating by the heat source to form a water pipe 20 In a boiler using a spiral structure in which a water channel and a combustion furnace are alternately formed between the inner line 22 and the outer line 24, the water pipe 20 is formed of the inner line 22. The channel 31 has an inner surface 32 formed of the curvature Ra of the arc corresponding to the curvature, and an outer surface 34 formed of the curvature Rb of the arc corresponding to the curvature of the outer line 24. The plurality of spiral pipes 30, which are formed to be closed in the spiral direction and open in the vertical direction, are arranged in succession from the center side to the outside, and thus have a spiral shape from the center side to the outside.

In the boiler using the spiral structure according to the present invention further includes a lower plate 60 and the upper plate 70 disposed on the lower side and the upper side of the water pipe 20; The lower plate 60 and the upper plate 70 may be coupled to the plurality of spiral pipes 30 by forming spirals 62 and 72 corresponding to the plurality of spiral pipes 30.

In the boiler using the spiral structure according to the present invention, the plurality of spiral pipes 30 are formed with the curvature of the arc R1 corresponding to a part of the curvature of the inner line 22 so as to be disposed first at the center side. A first spiral pipe 40 having an inner surface 42, an outer surface 44 formed of a curvature R2 of an arc corresponding to a partial curvature of the outer line 24, and the first spiral pipe 40. The first spiral pipe 40 and the second spiral pipe 50 are provided with a second spiral pipe 50 having an inner surface 52 and an outer surface 54 formed of larger arc curvatures R3, R4. ) Can be combined to be arranged in a row from the center side to the outside, so that a spiral shape can be formed from the center side to the outside.

In the boiler using the spiral structure according to the present invention such that the water pipe 20 is disposed outside the outer line 24 to be disposed on the combustion furnace formed by the inner line 22 and the outer line 24. Combined, but may be further provided with a flue gas induction plate 80 is installed to be inclined to lower in the outward direction of the spiral.

In the boiler using the spiral structure according to the present invention, the water pipe 20 may be installed to be inclined to have a predetermined angle with respect to the ground.

According to another feature of the present invention for achieving the above object, the present invention, the inner line 22 and the outer line 24 has a spiral structure from the center side to the outside of the heating by the heat source is made of a water pipe 20 In the method of manufacturing a boiler using a spiral structure in which a water channel and a combustion furnace are alternately formed between the inner line 22 and the outer line 24, the curvature of the inner line 22 is formed. The inner surface 32 formed by the curvature Ra of the arc corresponding to the outer surface 34 formed by the curvature Rb of the arc corresponding to the curvature of the outer line 24, and the channel 31 is Preparing a plurality of spiral pipes 30 to be closed in the spiral direction and open in the vertical direction; Preparing a lower plate (60) and an upper plate (70) disposed on the lower side and the upper side of the water pipe (20), the spirals (62, 72) corresponding to the plurality of spiral pipes (30) formed; Between the lower plate 60 and the upper plate 70 by aligning the spirals 62 and 72 formed on the lower plate 60 and the upper plate 70, the plurality of spiral pipes 30 are successively coupled outward from the center side to the The water pipe 20 is formed.

In the method of manufacturing a boiler using a spiral structure according to the present invention, the forming of the water pipe 20 may include the spirals of the lower plate 60 and the upper plate 70 at both ends of the plurality of spiral pipes 30. 62 and 72 may be formed by welding the lower plate 60 and the upper plate 70 and the plurality of spiral pipes 30.

According to the boiler using the spiral structure and the manufacturing method thereof according to the present invention, a plurality of spiral pipes 30 are formed so that the inner surface 32 and the outer surface 34 correspond to the curvature of the spiral from the center side of the heat source. By arranging the water pipes of a spiral structure by arranging them outwards, the combustion gas is circulated from the center side to the outside in the form of a spiral so that the residence time and the heat exchange area are increased, so that higher thermal efficiency can be expected. In particular, the water pipe 20 in the boiler using the spiral structure according to the present invention is to form a curvature of the spiral on the inner surface 32 and the outer surface 34 by pressing (press molding) a circular pipe, a separate high technology Since it is possible to use a press molding technique and a device required in general without applying the necessary manufacturing method or apparatus, there is an advantage that can be sufficiently secured and practically used without the need for advanced technology. In addition, the present invention is installed so that the combustion gas induction plate 70 is inclined so as to be lowered in the outer spiral direction on the combustion furnace, so that the combustion gas flows downward to the outer direction up and down to the outside of the water pipe 20 It can be expected to ensure a uniform temperature distribution over time.

1 is a view for explaining a boiler using a spiral structure according to the technical idea of the present invention, Figure 2 is a view for explaining a manufacturing method of a spiral pipe of the boiler using a spiral structure according to the present invention, 3 is a view for explaining a method of manufacturing a boiler using a spiral structure according to the present invention.

Referring to Figure 1, the boiler 10 using the spiral structure according to the present invention so that the water channel and the combustion furnace is configured through the water pipe 20 of the spiral structure is formed from the center side to the outside from which the heat source is introduced and heated. Thus, the combustion gas is circulated from the center side to the outside in the form of a spiral so that the residence time and the heat exchange area are increased, so that higher thermal efficiency can be expected.

More specifically, in the boiler 10 using the spiral structure according to the present invention, the water pipe 20 has an inner line 22 and an outer line 24 from the center side to the outside from which the heating by the heat source is basically performed. By forming the water pipe 20 made of a spiral structure, the entire spiral structure (spiral structure; in the description of the present invention, 'spiral structure' and 'spiral structure' are used interchangeably in the same meaning). The water channel and the combustion furnace are alternately formed between the line 22 and the outer line 24.

At this time, the water pipe 20 has a spiral shape from the center side to the outside because a plurality of spiral pipes 30 are arranged in a row from the center side to the outside. Here, the plurality of spiral pipes 30, as shown in FIG. 2, the inner surface 32 formed by the curvature Ra of the arc corresponding to the curvature of the inner line 22, and the curvature of the outer line 24. It has an outer surface 34 formed by the curvature Rb of the arc corresponding to the channel 31 is formed so as to open in the vertical direction while closing in the spiral direction.

As described above, since the boiler 10 using the spiral structure according to the present invention is formed by assembling a plurality of spiral pipes 30, a press generally used without applying a manufacturing method or a device requiring a separate high technology is required. Based on the processing technology, molds and their devices are used in the formation of spiral pipes (typically, but not limited to press working). For example, in the case of a hollow tube having a heteromorphic cross section instead of a circular cross section (a suitable material for the spiral pipe 30 of the present invention is stainless series), various processing methods such as drawing, extrusion, and precision die casting may be applied. Since it is possible to do this, there is an advantage that the productivity can be secured enough for practical use without the need for advanced technology.

Meanwhile, in the present invention, the inner line 22 and the outer line 24 constituting the water pipe 20 are elements formed by the inner surface 32 and the outer surface 34 of the plurality of spiral pipes 30. Of course, the connection of the plurality of spiral pipes 30 is required to be combined in a sealed structure due to the nature of the water pipe 20, such a combination of the sealing structure can be made by welding typically, the needs of designers or users And gaskets and packings used for watertightness in this field as required.

In addition, in the present invention, the water pipe 20 is, as shown in Figure 3, a spiral formed when a plurality of spiral pipes 30 are hermetically coupled from the center side to the outside (this spiral is the inner line 22 and It is formed so as to correspond to the outer line 24} and the lower plate 60 and the upper plate 70 having the spirals 62, 72 formed to penetrate to correspond to the lower side and the upper side, such a lower plate 60 The upper plate 70 is coupled to seal with a plurality of spiral pipes 30 constituting the water pipe (20). Of course, the coupling structure of the water pipe 20 and the lower plate 60 and the upper plate 70 is to be applied to a variety of techniques for the structure of the seal.

In addition, the present invention has a spiral structure of the water pipe 20, which means that it is formed to have a spiral shape from the center side to the outside. Therefore, in the present invention, the water pipe 20 has been described with reference to an example in which the waterways and the combustion furnace are formed at uniform intervals from the center side to the outside, but as the preferred embodiment of the present invention, the combustion gas is moved outward so that In consideration of the amount of heat lost, it is preferable that the interval between the furnaces gradually narrows toward the outside. However, such a condition is that the central axis {C; This central axis is preferably formed in the form of a spiral from the center side to the outside with respect to the center of the burner 1 (see FIG. 4) that provides the heat source. It can be set according to the needs of those who do it.

In addition, the spiral pipe 30 constituting the water pipe 20 in the present invention can be applied to various forms that can realize the technical idea of the present invention. That is, in the present invention, as shown in FIG. 2, the spiral pipe 30 is press-molded (pressed) into a circular pipe 30 'having a hollow 31' so that the inner surface 32 of the water pipe 20 is formed. A spiral pipe 30 having a curvature Ra corresponding to the inner line 22 of the pipe and having an outer surface 34 formed of a curvature Rb corresponding to the outer line 24 of the water pipe 20. Although shown, the art of bending or sheet metal to form the spiral pipe 30 will also be under the technical idea of the present invention. In addition, the curvature Ra of the inner surface 32 and the curvature Rb of the outer surface 34 of the spiral pipe 30 are respectively formed so that each spiral pipe 30 conforms to the curvature of each of the portions positioned in the entire spiral structure. Therefore, as shown in FIG. 2, it is preferable to form a spiral having a uniform shape as a whole, but a predetermined number formed under the technical concept of the present invention to reduce manufacturing facilities and unit cost as in a preferred embodiment of the present invention {of the present invention] In the preferred embodiment, a combination of two spiral pipes 30 consisting of a first spiral pipe 40 and a second spiral pipe 50 is exemplified, but the number of the spiral pipes 30 is dependent on the needs of the designer or user. It is possible to form the water pipe 20 by combining the spiral pipe 30 of the}.

Referring to Figures 2 and 3 in a state of familiarity with the present invention, the present invention is a water pipe 20 in which the inner line 22 and the outer line 24 have a spiral structure from the center side where the heating by the heat source is performed to the outside. By providing the above, there is provided a method of manufacturing a boiler using a spiral structure in which a channel and a combustion furnace are alternately formed between the inner line 22 and the outer line 24.

Such a method of manufacturing a boiler using a spiral structure according to the present invention, first, as shown in Figure 2, to form a spiral pipe 30 separate from each other in a form that is sequentially coupled. The spiral pipe 30 is formed to have an inner surface 32 formed by the curvature Ra of the arc corresponding to the curvature of the inner line 22, and the curvature Rb of the arc corresponding to the curvature of the outer line 24. It is formed to have an outer surface 34 formed of. Then, the channel 31 is formed so as to open in the vertical direction while closing in the spiral direction. In this case, the length L of the spiral pipe 30 is set in consideration of the coupling relationship between the lower plate 60 and the upper plate 70. That is, when the spiral pipe 30 is to be fitted between the lower plate 60 and the upper plate 70, it will be made equal to the separation distance between the lower plate 60 and the upper plate 70, the spiral pipe 30 is the lower plate When inserted into and installed into the spirals 62 and 70 formed on the 60 or the upper plate 70, the insertion length h (see FIG. 9B) will be set.

Thus, the lower plate 60 and the upper plate 70 are prepared together with the spiral pipes 30. The lower plate 60 and the upper plate 70 are disposed on the lower side and the upper side of the water pipe 20, and the spirals 62 and 72 corresponding to the plurality of spiral pipes 30 are formed. Of course, such a lower plate 60 and the upper plate 70 is formed in a variety of forms in consideration of the structure of a general boiler, a structure in consideration of the connection to the device having an installation or connection to it can be applied.

When the spiral pipes 30, the lower plate 60, and the upper plate 70 are prepared as described above, the spirals 62 and 72 formed on the lower plate 60 and the upper plate 70 between the lower plate 60 and the upper plate 70. In accordance with this, a plurality of spiral pipes 30 are successively coupled from the center side to the outside to form a water pipe 20. Of course, after connecting the spiral pipe 30 first to form a water pipe 20, the work to combine the lower plate 60 and the upper plate 70 to the lower side and the upper side of the water pipe 20, respectively, In this case, a separate jig should be used to fit the overall spiral structure of the water pipe 20. Therefore, in the method of manufacturing a boiler using a spiral structure according to the present invention, the lower plate 60 is connected to the upper plate 70 so that the spiral pipes 30 are continuously connected to each other, so that no separate jig is used. It is possible to form a spiral structure effectively without.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 4 to 9C, and like reference numerals designate like elements in FIGS. 1 to 9C. On the other hand, in each drawing, the configuration and operation that can be known from the technology related to the general boiler, the configuration for insulation and heat insulation, the airtight configuration for watertightness, instruments such as pressure gauges installed in the boiler, various valves, devices for safety, pumps and phosphorus Configurations readily known from related technologies in this field, such as water supply devices such as jetters, control devices and fuel supply devices, molds for forming spiral pipes with curvature and their functions, and technologies for manufacturing and using the molds The drawings and detailed descriptions of the functions and effects thereof are briefly or omitted, and are illustrated based on the parts related to the present invention.

4 is a view for explaining the main configuration of the boiler using a spiral structure according to a preferred embodiment of the present invention, Figure 5 is a schematic plan view of a water pipe in the boiler using a spiral structure according to a preferred embodiment of the present invention 6 is a view for explaining a method of manufacturing a spiral pipe in a boiler using a spiral structure according to a preferred embodiment of the present invention, Figure 7 is a boiler using a spiral structure according to a preferred embodiment of the present invention 8 is a view for explaining the operation of the combustion gas induction plate, Figure 7 is a view for explaining the installation form of the combustion gas induction plate in the boiler using a spiral structure according to a preferred embodiment of the present invention, Figures 9a to 9c is a method of manufacturing a boiler using a spiral structure according to a preferred embodiment of the present invention. Are views for explaining.

4 and 5, in the boiler 10 using the spiral structure according to the preferred embodiment of the present invention, a water pipe 20 specially designed under the technical idea of the present invention is installed in the housing 18. In addition, a water supply tank 14 is installed below the water pipe 20 to accommodate water supplied from the outside, and a drain tank 16 to accommodate hot water or steam heated through the water pipe 20 is installed above the water pipe 20. . Then, a burner 1 for heating the water pipe 20 through a heat source is installed above or below the central axis C of the boiler 10. In addition, the service space 15 may be formed on the side where the burner 1 is installed (water supply tank 14 or drainage tank 16) to secure the installation space of the burner 1. And the water supply tank 14 is connected with the water pipe 20 through the lower board 60, and the drain tank 16 is connected with the water pipe 20 through the upper board 70. FIG. And, although not shown, such a boiler 10 will be installed in a frame of various forms to facilitate the installation, to provide a movable structure. In addition, since the arrangement structure, the water supply and the drainage structure of the boiler 10 can be made by applying various boiler technologies applied in this field, detailed description thereof will be omitted.

In addition, in the boiler 10 using the spiral structure according to the present embodiment, as shown in Figs. 4, 5, 7 and 8, the combustion gas induction plate 80 is provided so that the combustion gas reaches the outer direction. By inducing to flow in the downward direction, to the outside of the water pipe 20 to have a uniform temperature distribution over the vertical direction. That is, such combustion gas induction plate 80 is coupled to the outside of the outer line 24 to be disposed on the combustion furnace formed by the inner line 22 and the outer line 24, but lower in the outer direction of the spiral It is installed at an inclined angle. In addition, in this embodiment, the perforations 82 are formed over the entire surface of the combustion gas induction plate 80, thereby reducing resistance that may inhibit the flow of the combustion gas.

5 and 6, in the boiler 10 using the spiral structure according to the present embodiment, the inner line 22 and the outer line 24 spire outward from the center side where the heating is performed by the heat source. By forming the water pipe 20 by the water column structure, the water channel and the combustion furnace are alternately formed between the inner line 22 and the outer line 24.

At this time, the water pipe 20 is basically, as shown in Figure 2, the inner surface 32 formed of the curvature Ra of the arc corresponding to the curvature of the inner line 22 and the curvature of the outer line 24 and A plurality of spiral pipes 30 having an outer surface 34 formed by the curvature Rb of the corresponding arc, and formed so that the channel 31 is closed in the spiral direction and open in the vertical direction, are arranged in succession from the center side to the outside. And are combined to form a spiral from the center side to the outside.

In particular, in the present embodiment, the spiral pipe 30 applies the first spiral pipe 40 and the second spiral pipe 50 which are formed to correspond to a part of curvature in the entire spiral, so that the number of the spiral pipes 30 may be adjusted. To reduce the number of molds (eg, press molds for pressurizing circular pipes 40 'and 50') for producing spiral pipes 30, thereby reducing production costs. Characterized in that. Here, the first spiral pipe 40 has an inner surface 42 formed by the curvature R1 of an arc corresponding to a partial curvature of the inner line 22 so as to be disposed first at the center side, and a part of the outer line 24. It has an outer surface 44 formed of curvature R2 of an arc corresponding to the curvature. The second spiral pipe 50 has an inner surface 52 and an outer surface 54 formed of curvatures R3 and R4 of a larger arc than the first spiral pipe 40. The first and second spiral pipes 40 and 50 have the same length {L, of course, such a length L may be set as necessary and may have different lengths}, and the hollow 41 ' , 51 '), respectively, by press-molding cylindrical tubes 40' and 50 'of different diameters. Of course, molds (press molds) for press-molding these will be formed to have a structure corresponding to the curvatures R1, R2, R3, R4 formed in each spiral pipe.

Meanwhile, in the present embodiment, the first spiral pipe 40 and the second spiral pipe 50 constituting the water pipe 20 have a structure in which upper and lower ends are inserted into and coupled to the lower plate 60 and the upper plate 70. The gap between the spiral pipes generated between the upper plate 60 and the lower plate 70 is sealed by inserting a molding 32 to weld. Of course, even in this case, it can be made by applying a gasket (packing) and the like that can be used when connecting the spiral pipe 30 described above.

Thus, the water pipe 20 of the boiler 10 using the spiral structure according to the present embodiment is the first spiral pipe 40 and the second spiral pipe 50 when viewed in the overall spiral structure (spiral structure) It is desirable to be formed with the curvature of the arc to be used frequently. Of course, the curvature of the first spiral pipe 40 and the second spiral pipe 50 may be a curvature of some sections arbitrarily selected by the designer in the overall spiral structure. For example, the first spiral pipe 40 of this embodiment has a curvature of the first partial section of the center side having the smallest curvature in the spiral structure, and the second spiral pipe 50 is larger than the first spiral pipe 40. In addition, the entire spiral structure has a curvature of some section in the middle position.

As described above, when the first and second spiral pipes 40 and 50 are combined to form the entire water pipe 20 by taking the curvature of a partial region of the spiral structure, the entire water pipe 20 has a curvature corresponding to the curvature of each portion of the spiral structure. Rather than an example of manufacturing a plurality of spiral pipes 30 (eg, in the case of FIG. 1), as shown in FIGS. 5 and 9C, the overall curvature may be slightly disturbed, which may be predicted in advance through CAD or the like. Since it is a form, an optimum arrangement can be obtained, while aiming at the convenience of manufacture and reduction of a production cost.

9A to 9C are views for explaining a method of manufacturing a boiler using a spiral structure according to a preferred embodiment of the present invention.

6 and 9A to 9C, a method of manufacturing a boiler using a spiral structure according to the present embodiment may include a first spiral pipe 40 and a second spiral pipe formed to correspond to a part of curvature in the entire spiral. By applying a spiral pipe (30) consisting of 50, to provide easy management and manufacturing, it is possible to reduce the production cost. Characterized in that. Here, the first spiral pipe 40 has an inner surface 42 formed by the curvature R1 of an arc corresponding to a partial curvature of the inner line 22 so as to be disposed first at the center side, and a part of the outer line 24. It has an outer surface 44 formed of curvature R2 of an arc corresponding to the curvature. The second spiral pipe 50 has an inner surface 52 and an outer surface 54 formed of curvatures R3 and R4 of a larger arc than the first spiral pipe 40.

In addition, the method of manufacturing a boiler using a spiral structure according to the present embodiment is characterized in that the combustion gas induction plate 80 is arranged on the combustion furnace formed by the inner line 22 and the outer line 24. do. Such combustion gas induction plate 80 is coupled to the outside of the outer line 24 to be disposed on the combustion furnace formed by the inner line 22 and the outer line 24, but inclined to lower in the outer direction of the spiral Is installed.

In addition, the method of manufacturing a boiler using a spiral structure according to the present embodiment prepares the lower plate 60 and the upper plate 70 together with the spiral pipes 30. As shown in FIG. 9C, the lower plate 60 and the upper plate 70 are disposed below and above the water pipe 20. The lower plate 60 and the upper plate 70 have spirals 62 and 72 corresponding to the shape of the spiral formed by the combination of the first spiral pipe 40 and the second spiral pipe 50 described above. The spirals 62 and 72 of the lower plate 60 and the upper plate 70 are partitioned 64 and 74 so as to easily set the position of each spiral pipe sequentially arranged outward from the center side. Divided by) to form a spiral shape as a whole.

When the spiral pipes 30, the lower plate 60, and the upper plate 70 are prepared as described above, the boiler 10 using the spiral structure according to the present embodiment has a lower plate (as shown in FIGS. 9B and 9C). The first spiral pipe 40 and the second spiral pipe 50 are welded to the spirals 62 and 72 corresponding to each other of the 60 and the upper plate 70 while being positioned from the center side to seal the gap, thereby joining the water pipe 20 ). At this time, the spiral pipes sequentially connected from the center side to the outside are inserted into the spirals 62 and 72 of the lower plate 60 and the upper plate 70 to the lower plate 60 and the upper plate 70, respectively. Welded and sealed, between the lower plate 60 and the upper plate 70, each spiral pipe is hermetically sealed by welding through the molding 32 or the like.

9A and 9B, when the spiral pipe 30 is connected from the center side, the spiral pipe (to be disposed on the combustion furnace formed by the inner line 22 and the outer line 24). Combustion gas guide plate 80 is attached to the outside of the 30 to have a slope that is lowered in the outer spiral direction.

As described above, a boiler using a spiral structure according to a preferred embodiment of the present invention and a method of manufacturing the same are illustrated according to the above description and drawings, which are merely described for example and do not depart from the spirit of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope.

1 is a view for explaining a boiler using a spiral structure according to the technical idea of the present invention;

2 is a view for explaining a method for manufacturing a spiral pipe of a boiler using a spiral structure according to the present invention;

3 is a view for explaining a manufacturing method of a boiler using a spiral structure according to the present invention;

4 is a view for explaining the main configuration of a boiler using a spiral structure according to a preferred embodiment of the present invention;

5 is a schematic plan view of a water pipe in a boiler using a spiral structure according to a preferred embodiment of the present invention;

6 is a view for explaining a method for manufacturing a spiral pipe in a boiler using a spiral structure according to a preferred embodiment of the present invention;

7 is a view for explaining the operation of the combustion gas induction plate in the boiler using a spiral structure according to a preferred embodiment of the present invention;

8 is a view for explaining the installation form of the combustion gas induction plate in the boiler using a spiral structure according to a preferred embodiment of the present invention;

9A to 9C are views for explaining a method of manufacturing a boiler using a spiral structure according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: boiler (using spiral structure)

20: water pipe 22: inner line

24: outer line 30: spiral pipe

31, 41, 51: Channels 32, 42, 52: Inside

34, 44, 54: outer surface 40: first spiral pipe

50: second spiral pipe 60: lower plate

70: top 62, 72: spiral

80: combustion gas induction plate

Claims (6)

The inner line 22 and the outer line 24 are formed in a spiral structure from the center side where the heating is performed by the heat source to the outside to form a water pipe 20, so that the inner line 22 and the outer line 24 are formed between the inner line 22 and the outer line 24. In a boiler using a spiral structure in which a water channel and a combustion furnace are alternately formed, The water pipe 20 has an inner surface 32 formed by the curvature Ra of the arc corresponding to the curvature of the inner line 22 and a curvature Rb of the arc corresponding to the curvature of the outer line 24. A plurality of spiral pipes 30 having an outer surface 34 formed so as to be open in the vertical direction while the channel 31 is closed in the helical direction are arranged in a row from the center side to the outside, and thus are coupled to each other. A boiler using a spiral structure characterized by having a spiral shape. The method of claim 1, Further comprising a lower plate 60 and the upper plate 70 disposed on the lower side and the upper side of the water pipe 20; The lower plate 60 and the upper plate 70 are formed with spirals 62 and 72 corresponding to the plurality of spiral pipes 30 to form a spiral structure, which is coupled to the plurality of spiral pipes 30. Used boiler. The method according to claim 1 or 2, The plurality of spiral pipes 30 are formed on the inner surface 42 formed by the curvature R1 of the arc corresponding to the partial curvature of the inner line 22 so as to be disposed first at the center side, and the outer line 24. A first spiral pipe 40 having an outer surface 44 formed of curvature R2 of an arc corresponding to some curvature, and The first spiral pipe 40 is provided with a second spiral pipe 50 having an inner surface 52 and an outer surface 54 formed by curvature R3 and R4 of a larger arc than the first spiral pipe 40. ) And the second spiral pipe (50) are combined in a row from the center side to the outside, so that a spiral shape is formed from the center side to the outside, so that the spiral structure is used. The method according to claim 1 or 2, The water pipe 20 is coupled to the outside of the outer line 24 to be disposed on the combustion furnace formed by the inner line 22 and the outer line 24, inclined so as to lower in the outer direction of the spiral Boiler using a spiral structure, characterized in that it further comprises a combustion gas induction plate (80). The inner line 22 and the outer line 24 are formed in a spiral structure from the center side where the heating is performed by the heat source to the outside to form a water pipe 20, so that the inner line 22 and the outer line 24 are formed between the inner line 22 and the outer line 24. In the method of manufacturing a boiler using a spiral structure in which a water channel and a combustion furnace are alternately formed, An inner surface 32 formed by the curvature Ra of the arc corresponding to the curvature of the inner line 22, and an outer surface 34 formed by the curvature Rb of the arc corresponding to the curvature of the outer line 24. Preparing a plurality of spiral pipes 30 such that the channel 31 is closed in the spiral direction and is opened in the vertical direction; It is disposed on the lower side and the upper side of the water pipe 20, the spirals 62, 72 corresponding to the plurality of spiral pipes 30 are formed Preparing a lower plate 60 and an upper plate 70; Between the lower plate 60 and the upper plate 70 by aligning the spirals 62 and 72 formed on the lower plate 60 and the upper plate 70, the plurality of spiral pipes 30 are successively coupled outward from the center side to the Method for producing a boiler using a spiral structure, characterized in that to form a water pipe (20). The method of claim 5, Forming the water pipe 20 is the lower plate 60 in a state in which both ends of the plurality of spiral pipes 30 are inserted into the spirals 62 and 72 of the lower plate 60 and the upper plate 70, respectively. And the upper plate 70 and the plurality of spiral pipes 30 are welded.

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