KR101174604B1 - Multilayer heat plate fire-tube boiler - Google Patents

Abstract

PURPOSE: A laminated plate type flue type boiler is provided to increase a generation speed of hot water and steam by high thermal efficiency and a rapid heat transfer and to reduce manufacturing costs. CONSTITUTION: A laminated plate type flue type boiler comprises a heating plate of a predetermined standard. The heating plate comprises two or more concavo-convex wrinkles, a burner inlet, and an exhaust pipe. Two or more heating plates are laminated, thereby forming a heat exchanger(25), a flame unit, a flue(2). A water chamber(32) surrounds around the flue.

Description

Multilayer heat plate fire-tube boiler

The present invention relates to a boiler having a laminated plate furnace, and more particularly, to a boiler of a laminated plate type furnace system in which the volume of the boiler is greatly reduced while the thermal efficiency is excellent.

In general, the furnace tube type is mainly used as a hot water and steam boiler, and the combustion gas of the horizontally installed burner passes through the furnace and is discharged through the tube installed inside the circular chamber at the upper part of the furnace so that the combustion gas and water exchange heat. In order to secure the heat transfer area, the long length of the connection should be arranged in an S-shape, etc., so the boiler is bulky, heavy, and expensive to manufacture.

In addition, in terms of fuel efficiency, the size of the water chamber is large, so that the amount of water retained is large, and thus, it takes a long time to raise the water to the required temperature.

In addition, since the size of the combustion chamber and the water chamber is large, the radiant heat loss is large, and the temperature of the exhaust gas is high, thereby causing a large amount of heat loss.

Another example of a hot water boiler is a water pipe type, which has a water pipe disposed on the top or side of the combustion chamber so that the combustion gas of the combustion chamber is discharged to the outside through the water pipe, which is also bulky, heavy, and expensive to manufacture. It takes a lot.

In addition, since a large amount of water pipes are installed and vulnerable to the deposition of inorganic materials, they are not suitable for steam generation, and because the combustion chamber and the water chamber are large, the radiation heat loss is large.

Another example of a steam boiler is a perfusion type, in which a burner is placed at the top of the combustion chamber and vertically arranged with a water pipe so that the burner of the combustion chamber is burned downward while the combustion gas is discharged through the water pipe to the outside. It is used at relatively small doses (typically 2,000,000 kcal / h or less).

As the water flows through the small-diameter pipe, the water becomes steam, and boiler breakage occurs frequently due to problems such as clogging of the lower part due to the mineral deposition, shorten the life of the boiler, and water treatment cost and deposition to prevent the deposition of minerals. It is expensive to remove used minerals.

In addition, conventional boilers require additional equipment, such as a water preheater and an air preheater, in order to increase energy efficiency, and require a high manufacturing cost due to a complicated structure.

In particular, in the case of the perfusion type, the flame is sprayed from the top to the reverse design, and in the case of the non-tubular type connection, the associative arrangement is horizontally deflected, which requires a stronger blower and fan, and deposits of combustion residues and minerals. This has many problems.

An object of the present invention is to solve the above problems of the prior art, by applying the laminated plate-type furnace in accordance with the present invention to various types of boilers such as hot water or steam only, hot water, steam combined, excellent thermal efficiency and volume of the boiler The main purpose is to provide a boiler with a long lifespan and a significant reduction in manufacturing and maintenance costs while significantly reducing weight and weight.

In order to achieve the above object, the present invention, in various types of boilers such as hot water or steam only, hot water, steam combined, heat exchanger by stacking two or more heat transfer plates of a predetermined standard having two or more uneven wrinkles, burner insertion port, exhaust port And a flame section and a flue gas section form an integrated barrel, and the water chamber is provided so as to surround the furnace barrel.
Here, the interval between the uneven wrinkles are configured to gradually widen from the center portion of the heat transfer plate toward the left and right sides.

Here, the furnace is configured to repeatedly arrange the heat transfer plates having the same structure and shape to face each other back and forth, and join the joints of the heat transfer plates by means of press, welding, or the like to form a compartment between the heat transfer plates and the heat transfer plates.

Here, the compartment has a function as a flame passage and is configured in a shape that gradually increases in size from the center of the furnace to the left and right so that the flame is evenly distributed over the entire surface of the heat transfer plate and discharged from the flue.

Here, the burner is inserted into the lower part of the furnace and has a structure in which the rising direction of the heat and the year of the furnace become the forward direction.

The burner is also provided with a radial burner head in which the flame is radiated uniformly in 360 ° forwards.

In addition, the heat transfer plate according to the present invention is characterized in that it is formed in the form of a plate of a predetermined standard provided with at least two uneven wrinkles, burner insertion hole, exhaust port in one press die.

Laminated furnace-type boiler according to the present invention is significantly reduced in size compared to conventional boilers of the same calorie size is 1/5 of the size compared to the furnace-associated boiler having the same heat transfer area, 1/1 size compared to the perfusion condensing boiler It occupies a small occupied space so that it is only 3 to 1/2, and high heat efficiency and fast heat transfer generate a large amount of hot water and steam, and reduce the manufacturing cost of the boiler.

In addition, there is little impurity deposition in the furnace to maintain the thermal conductivity for a long time, there is an effect that extends the cleaning cycle and life of the furnace.

1 is a view showing a laminated plate-type furnace heating plate according to a preferred embodiment of the present invention
2 is a view showing a laminated plate-like furnace and a manufacturing method thereof according to a preferred embodiment of the present invention
3 is a view of mounting a laminated plate-type furnace in a pressure vessel used as a water chamber according to a preferred embodiment of the present invention.
4 is an enlarged view of FIG. 3C
5 is a view showing the flow of flame and water in a laminated plate type furnace boiler according to a preferred embodiment of the present invention
Figure 6 is a design drawing of a laminated plate-type furnace boiler according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the structure of the heat transfer plate 1, which is a unit structure of a laminated plate type furnace type boiler according to the present invention, divided into a front view (FIG. 1A), a side view (FIG. 1B), and a central cross section (FIG. 1C).

In the laminated plate type furnace boiler according to the present invention, the laminated plate type furnace is manufactured by stacking a plurality of heat transfer plates 1 having a burner insertion hole 12 and an exhaust port 13 as shown in FIG. 1.

At this time, the heat transfer plate (1) is formed in the middle of the burner insertion hole 12 and the exhaust port (13) in order to increase the heat transfer area and smooth exhaust of the exhaust gas is formed between the uneven wrinkles (11) As shown in FIG. 1C, the interval between the electrodes is gradually widened from the center to the left and right sides of the heat transfer plate 1.

Burner insertion hole 12 is located in the lower center of the heat transfer plate (1) for even distribution of the flame and natural exhaust, the combustion direction of the burner according to the present invention is 360 ° as described later, the lower end and the burner of the heat transfer plate (1) There is a predetermined interval between the lower end of the insertion hole 12 so that the natural flow of the flame is injected downward.

The exhaust port 13 is located at the upper center of the heat transfer plate 1, and unlike the burner insertion hole 12, the exhaust port 13 does not need to have much space between the upper end of the exhaust port 13 and the upper end of the heat transfer plate 1.

FIG. 2 shows a method (FIG. 2A) and a laminated plate-type furnace (FIG. 2B) of manufacturing the laminated plate-type kegs 2 according to the present invention by laminating the heat transfer plates 1, respectively.

According to FIG. 2A, the furnace 2 repeatedly arranges heat transfer plates 1 having the same structure and shape, facing each other back and forth, and joins the joining portions 21 by means of press or welding to heat transfer plate 1 and heat transfer plates. The compartment 24 is produced between (1).

At this time, in order to increase the heat transfer speed and the heat transfer amount, the distance between the heat transfer plate 1 and the heat transfer plate 1 is narrowed as much as possible, and the heat transfer area 1 is designed to increase the heat transfer area.

In addition, as long as there is no problem in internal pressure and durability in order to reduce heat transfer and manufacturing cost, a thin heat transfer plate 1 having good heat transfer efficiency is used.

A general plate heat exchanger is formed by lamination of a heat exchanger plate of a gasket or a brazing type in which the heat medium and the medium to be heated are perforated in the same plate so that the heat medium and the medium to be flowed in the heat exchanger are intersected together.

The laminated plate furnace 2 according to the present invention is similar to a general plate heat exchanger in that the heat transfer plate 1 is a plate, but the laminated plate furnace 2 according to the present invention uses a flame of a burner directly as a heat medium. In order to withstand flame, the heat transfer plates 1 are manufactured by welding and laminating each other, which is different from a general plate heat exchanger of a brazing method in which a copper plate is inserted between the heat transfer plates and compressed and finished.

In this way, by stacking the heat transfer plate 1 of a predetermined standard, it is possible to easily manufacture the furnace 2 in which the heat exchanger 25, the flame unit 26, and the flue gas unit 27 are integrated, and the heat transfer plate 1 is a single plate. Since it is possible to mass-produce with a press die, the laminated plate type furnace type boiler according to the present invention can reduce the production cost and greatly increase the production efficiency compared to the boiler according to the prior art.

In addition, in manufacturing the furnace 2 by stacking the heat transfer plates 1, the burner insertion hole 12 of one of the heat transfer plates 1 of the flame portion 26 is closed so that the inside and the outside of the furnace 2 are isolated. The plate 22 is blocked, and the exhaust port 13 of one of the heat transfer plates 1 of the exhaust gas 27 is also blocked by the exhaust port closing plate 23 to shield the interior of the furnace from the water chamber 32.

In consideration of the productivity, quality, etc. of the heat transfer plate 1 with respect to the finish plates 22 and 23, a mold for heat transfer plate in which the burner insertion hole 12 or the exhaust port 13 is finished may be used.

Only the flame passes through the compartment 24 of the laminated plate-shaped barrel 2 thus produced, and the external heat transfer surface of the furnace is configured to contact water to be heated.

Laminated plate-type kegs (2) according to the present invention is significantly reduced in size compared to the conventional boiler kegs, since the burner is directly inserted into the furnace can be further reduced the size of the furnace can be a separate combustion chamber.

In this way, as the size of the furnace is reduced, the heat absorption area of the furnace itself is reduced, and heat is rapidly transferred to the heated object such as water, thereby shortening the generation time of hot water and steam.

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In addition, the contact area with the atmosphere is greatly reduced, the radiation heat loss through the furnace surface is reduced, the space occupancy is reduced, and the use of raw materials is reduced compared to the boiler of the same energy capacity, which is environmentally friendly and reduces the manufacturing cost.

Fig. 3 is a front view (Fig. 3A) and a side perspective view (Fig. 3B) in which a laminated plate-shaped barrel (2) according to the present invention is installed inside a pressure vessel (31) which is also used as a water chamber (32). , Divided into plane perspective views (FIG. 3C).

As shown in FIG. 3, the laminated plate-shaped barrel 2 according to the present invention is vertically erected so that the flame flows out from the bottom, in accordance with the laws of nature in which hot air flows due to convection. Is disposed on the lower side of the furnace, and the exhaust port 13 is disposed on the upper side of the furnace.

That is, the laminated plate type furnace boiler according to the present invention adopts an upward combustion system having a structure in which the rising direction of the flame and the flue of the furnace are in the forward direction, thereby reducing the exhaust resistance of the exhaust gas.

In addition, in the vertical heating plate 1, impurities deposited by combustion residues and inorganic matters in the water (heated body) are much less than the horizontal heating plate, and thus the heat transfer efficiency is maintained even after long-term use. Is extended.

In addition, the pressure vessel 31 according to the present invention is to be insulated from the outside and to accommodate the laminated plate barrel (2) and to fill the water therein for use as a water chamber 32, the burner of the laminated plate barrel (2) The insertion hole 12 and the exhaust port 13 are perforated to an appropriate portion of the pressure vessel 31 so as to be connected to the outside of the pressure vessel 31, and the burner insertion hole 12 and the exhaust port 13 are opened through the perforated holes. The burner insertion flange 37a and the exhaust pipe connection flange 37b are connected to the burner and the exhaust pipe, respectively.

At this time, the burner insertion port 12, the exhaust port 13 and the pressure vessel 31 of the laminated plate-type furnace 2 are well sealed, so that the water in the water chamber 32 is exposed to the outside of the pressure vessel 31 or the furnace tube 2. Do not spill into the inside of the tank.

In addition, when the laminated plate-shaped furnace (2) is mounted inside the pressure vessel (31), a sedimentation chamber (35) is secured with a free space under the pressure vessel (31) to form a precipitation space such as inorganic matter in water. Thus, the drain valve 36 is provided at the lowermost end or the bottom of the side of the pressure vessel 31 so as to prevent the deposition of inorganic materials and the like on the heat transfer surface of the laminated plate-shaped barrel 2 and to discharge when a certain amount of inorganic materials are deposited. do.

At this time, the water supply port 33 is disposed above the settling chamber 35 so that the sediment is not prevented from sinking due to the new water supply.

In addition, by providing a free space of the steam chamber 38 in the upper portion of the pressure vessel 31 to ensure more water retained, and when using the boiler according to the present invention as a steam boiler, it can be used as a saturated steam chamber, steam Is supplied via hot water and steam outlet 34.

FIG. 4 is an enlarged view of FIG. 3C and shows the flame passage 41 of the furnace 2 in detail.

As shown in FIG. 4, the laminated plate-shaped furnace 2 which concerns on this invention uses the compartment 24 formed by lamination | stacking of the heat exchanger plates 1 as the flame path 41. As shown in FIG.

Therefore, the laminated plate-type furnace (2) according to the present invention will have a flame passage (41) having the uneven wrinkles in which the uneven wrinkles 11 of the heat transfer plate (1) is reflected as it is, the size of the flame passage (41) ) Toward the left and right out of the center of the (1) becomes larger in the order of ① <② <③ <④ <⑤.

This is to induce the flame to be evenly distributed on the entire surface of the heat transfer plate 1 by narrowing the passageway and gradually widening the passage toward the left and right outwards.

5 is a view showing the flow of flame and water in the laminated plate-type boiler in accordance with the present invention, it is divided into a front perspective view (Fig. 5a), a side perspective view (Fig. 5b), a plan view (Fig. 5c).

As shown in FIG. 5, the laminated furnace-type boiler 5 according to the present invention has no distinction between the combustion chamber and the association, that is, the association with the combustion chamber is integrated. The burner 51 is directly connected without a separate combustion chamber. Inserted into the laminated plate barrel (2) has a feature of minimizing the heat dissipation loss interval by minimizing the distance between the heat transfer plate (1) and the flame.

When a general one-way flame spray burner is directly connected to the laminated plate barrel 2 according to the present invention, the flue direction of the laminated plate barrel 2 and the spraying direction of the flame are perpendicular to each other, so that an even distribution of the flame in the furnace barrel 2 is achieved. Is not achieved and the exhaust is not smooth due to the formation of vortices.

Therefore, the laminated plate-type boiler 5 according to the present invention uses a burner having a structure in which the flame 53 of the burner 51 is evenly radiated in the 360 ° direction through the radial burner head 52.

In addition, the laminated plate-type furnace boiler 5 according to the present invention horizontally inserts the burner 51 into the lower center of the laminated plate-type barrel 2, and inserts the flame passage 41 of the furnace 2 into the burner 51. By increasing the distance, the flame 53 is evenly distributed along the flame passage 41 is configured to flow in the upper flow in the forward direction is configured to be discharged from the flue.

On the other hand, the feed water 55 supplied through the water inlet 33 is quickly heated through the wide heat transfer surface of the laminated plate barrel 2 is converted into hot water, so that hot water supply and steam supply is possible.

In addition, the exhaust gas 54 which transfers heat to the feed water 55 through the laminated plate-shaped furnace 2 is discharged at a very low temperature.

As described above, in the laminated plate-type boiler 5 according to the present invention, only the flame passes through the inside of the laminated plate-type furnace 2, and water is transferred to the external heat transfer surface of the furnace 2 heated by the direct heat of the flame. Since it is heated by contact, heat transfer area is maximized, and heat transfer efficiency and heat transfer speed are excellent in terms of significantly reducing the size of the boiler.

In addition, the laminated plate-type furnace boiler according to the present invention is a vertically stacked plate-shaped furnace (2) vertically and the burner 51 is inserted into the lower portion of the furnace 2, the upward direction of the structure in which the rising direction of the heat and the flue of the furnace becomes the forward direction. Combustion method is used, and the emission resistance of exhaust gas is small and deposits of impurities such as combustion residues and inorganic matters in water are small on the heat transfer plate.

6 is a diagram illustrating a design drawing of a laminated plate-type boiler in accordance with the present invention divided into a front view (6a), a side view (6b), a plan view (6c).

FIG. 6 shows an embodiment in which 30 sheets of heat transfer plates 1 according to the present invention are laminated at intervals of 1 cm. In this case, the heat transfer area of the laminated plate barrel 2 is about 23 m 2. It is only 1/5 the size of a boiler.

In addition, the size of the once-through condensing boiler is only 1/3 to 1/2.

In addition, when the exhaust gas 54 is passed through the plate heat exchanger 6 and discharged, waste heat can be completely recovered. Therefore, even if an expensive economizer or the like is replaced by the plate heat exchanger 6, high thermal efficiency can be obtained. .

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: heating plate
11: uneven wrinkles 12: burner insertion hole 13: exhaust vent
2: old pain
21: junction 22: burner insert closing plate 23: exhaust vent closing plate 24: compartment
25: heat exchange portion 26: flame portion 27: smoke exhaust portion
3: pressure vessel with built-in furnace
31: pressure vessel 32: water chamber 33: water inlet 34: hot water and steam outlet
35: sedimentation chamber 36: drain valve 37a: burner insertion flange
37b: Flange for connection to the exhaust pipe 37c: Flange for connection to the water supply pipe
37d: Flange for hot water and steam pipe connection 38: Steam room
41: flame passage
5: laminated furnace type boiler
51: burner 52: radial burner head 53: flame 54: exhaust gas
55: supply water 56: hot water and steam
6: plate heat exchanger

Claims (8)

In a hot water or steam-only or hot water and steam combined boiler, two or more heat transfer plates 1 having a predetermined size including two or more uneven wrinkles 11, a burner insertion hole 12, and an exhaust port 13 are laminated to heat exchange unit 25. ), The flame part 26, the flue gas part 27 to form an integrated barrel (2), the laminated plate-shaped barrel is characterized in that the water chamber 32 is provided so as to surround the furnace (2) Anticorrosive boiler. The method of claim 1,
Laminated plate-type furnace boiler, characterized in that the interval between the uneven wrinkles (11) of the heat transfer plate (1) is gradually widened from the center portion of the heat transfer plate (1) toward the left and right. The method of claim 1,
The furnace (2) is repeatedly arranged to face each other two or more of the heat transfer plate (1) having the same structure and shape, and join the junction portion 21 of the heat transfer plate (1) by means of press, welding or the like heat transfer plate ( Laminated plate-type furnace type boiler, characterized in that provided so that the compartment 24 is formed between the 1) and the heat transfer plate (1). The method of claim 3, wherein
Laminated plate-type furnace boiler, characterized in that the compartment 24 has a function as a flame passage (41). The method of claim 3, wherein
The compartment 24 is configured such that the flame 53 is evenly distributed on the entire surface of the heat transfer plate 1 so that its size gradually increases toward the left and right from the center of the furnace 2 so that the flame 53 flows out and is discharged from the flue. Laminated furnace type boilers characterized in that. The method of claim 1,
The furnace 2 is vertically erected in the water chamber 32 and a burner 51 is inserted into the lower portion of the furnace 2 so that the upward direction of the flame 53 and the flue of the furnace 2 are in the forward direction. Lamellar furnace type boiler characterized in that the structure. The method according to claim 6,
The burner 51 is laminated plate furnace boiler, characterized in that the flame is provided with a radial burner head 52 is uniformly radiated in the 360 ° direction. It consists of a plate-shaped body of a predetermined standard provided with an uneven wrinkle 11, a burner insertion hole 12, and an exhaust port 13, and the heat exchange part 25, the flame part 26, and the flue gas part 27 are integrated by lamination. The heat transfer plate (1) according to claim 1, characterized in that it is a production unit of the furnace (2), which can form the furnace (2).

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