CN215675815U - Full-premixing water-cooling combustion direct-current hot water boiler - Google Patents

Full-premixing water-cooling combustion direct-current hot water boiler Download PDF

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Publication number
CN215675815U
CN215675815U CN202121565907.4U CN202121565907U CN215675815U CN 215675815 U CN215675815 U CN 215675815U CN 202121565907 U CN202121565907 U CN 202121565907U CN 215675815 U CN215675815 U CN 215675815U
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water
flame
combustion chamber
chamber
bank
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CN202121565907.4U
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Chinese (zh)
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黄学兵
曾俊辉
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Rosen Boiler Co ltd
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Rosen Boiler Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The utility model relates to the technical field of boilers, in particular to a full-premix water-cooling combustion direct-current hot water boiler which comprises an air homogenizing chamber and a combustion chamber, wherein the air homogenizing chamber is positioned at the upper part of the combustion chamber and is communicated with the combustion chamber, an air distribution plate is arranged at the top of the combustion chamber, a plurality of fire rows are arranged below the air distribution plate in parallel, a flame stabilizing pipe is arranged at the inner flame position of flame when the fire rows are combusted, a discharge flue is arranged at the bottom of the combustion chamber, a convection pipe bundle and a condensation pipe bundle are arranged between the flame stabilizing pipe and the discharge flue, the combustion chamber is provided with a water inlet and a water outlet, the height of the water inlet is lower than that of the water outlet, water to be heated flows to the water outlet along the water inlet, the condensation pipe bundle, the convection pipe bundle and the flame stabilizing pipe in sequence, the fuel is premixed, and the flame stabilizing pipe and the fire rows are cooled, effectively reduce flame temperature, reduce the production of harmful gas, area is little, and safety and stability is high, and is energy-concerving and environment-protective.

Description

Full-premixing water-cooling combustion direct-current hot water boiler
Technical Field
The utility model relates to the technical field of boilers, in particular to a full-premixing water-cooling combustion direct-current hot water boiler.
Background
The domestic common hot water boiler mainly comprises the following technologies: traditional tobacco pipe formula pot shell boiler, cast aluminium formula condensation boiler. The traditional smoke tube type boiler shell boiler is widely used, but the heat efficiency is not high, the traditional gun type burner is adopted, the NOx emission is high, the boiler is large in size and large in occupied area, the boiler needs a thick heat insulation layer, a plurality of manufacturers adopt toxic heat insulation materials, the boiler is not environment-friendly, the tail heating surface is made of carbon steel or ND steel, and the corrosion resistance is poor.
Compared with the traditional boiler, the other cast aluminum type condensation hot water boiler adopts the metal fiber surface burner, the NOx emission is low, and the boiler heat efficiency is high; but the flame stability is poor and the tempering is easy; meanwhile, the environment adaptability is poor, impurities in air or fuel gas easily block surface fiber holes and need to be cleaned manually at regular intervals, otherwise, a combustion head is easily burnt out; the main material of the boiler body is cast aluminum, and due to the limitation of a manufacturing process, the defect rate of the cast aluminum is high; the protruding structures in the water channel and the flue are easy to damage; when the water quality is poor, the water channel is easy to block.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a full-premix water-cooling combustion direct-current hot water boiler which is scientific in structure, capable of cooling a flame stabilizing pipe and a fire grate, effectively reducing the flame temperature, reducing the generation of harmful gases, small in occupied area, high in safety and stability, energy-saving and environment-friendly.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a full premix water-cooling burning direct current boiler, includes even air chamber, combustion chamber, even air chamber is located the upper portion of combustion chamber and with the combustion chamber intercommunication, the top of combustion chamber is provided with the gas distribution board, the below parallel arrangement of gas distribution board has a plurality of fire row, the inner flame department of flame is provided with steady flame pipe during the fire row burning, the bottom of combustion chamber is provided with the discharge flue, steady flame pipe with be provided with convection bank, condenser bank between the discharge flue, the combustion chamber is provided with water inlet, delivery port, the height of water inlet is less than the height of delivery port, the water of treating the heating flows to the delivery port along water inlet, condenser bank, convection bank, steady flame in proper order.
Preferably, the diameter of the flame stabilizing pipe is smaller than the width of the inner flame of the flame when the fire grate burns.
Preferably, the outer sides of the two ends of the convection bank are respectively provided with a water chamber, the two water chambers are respectively positioned on the two sides of the combustion chamber, and the water chambers are provided with water-stop plates for guiding the water flow direction.
Preferably, the convection bank is a plurality of stainless steel tubes arranged in parallel, and the stainless steel tubes are arranged in a staggered manner on 2-3 horizontal planes with different heights.
Preferably, the condensation tube bundle is a stainless steel spiral finned tube, and a plurality of rows of lodging fins are arranged on the surface of the condensation tube bundle.
Preferably, a hollow water-cooling cavity is arranged in the middle of the fire grate, and water flowing out of the convection bank flows to the water outlet along the flame stabilizing pipe or the water-cooling cavity.
The utility model has the beneficial effects that: 1. by adopting a premixed combustion mode, the gas and the air are premixed and are sent into the gas homogenizing chamber, the flame combustion is stable, and the phenomena of backfire, deflagration, blockage, flameout and the like are not easy to occur.
2. The flame stabilizing pipe is arranged at the inner flame of the flame, and the flame stabilizing pipe and the fire grate are cooled by cold water, so that the heat of the flame stabilizing pipe and the fire grate is taken away quickly, the temperature of the flame is effectively reduced, and the generation of harmful gas is reduced.
3. The product is not afraid of dirty blockage, NOx emission is lower than 30mg/m for high-speed cultivation when the oxygen content is lower (for example, tail oxygen content is less than 3.5%), and the method has the characteristics of small occupied area, high safety and stability, energy conservation and environmental protection.
Drawings
Fig. 1 is a schematic structural view of a fully premixed water-cooled combustion once-through hot water boiler according to the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1.
Description of reference numerals:
1-gas homogenizing chamber 2-combustion chamber
21-water inlet 22-water outlet
3-gas distribution plate 4-fire grate
5-flame stabilizing pipe 6-discharge flue
7-convection bank 8-condensation bank
9-water chamber 91-water stop sheet.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the full premix water-cooling combustion direct-current hot water boiler of this embodiment is used for occasions that need use hot water as outside heat transfer medium, such as heating heat supply, supply life hot water etc. including even air chamber 1, combustion chamber 2, even air chamber 1 is located the upper portion of combustion chamber 2 and with combustion chamber 2 intercommunication, the top of combustion chamber 2 is provided with gas distribution plate 3, gas distribution plate 3's below parallel arrangement has a plurality of fire row 4, the inner flame department of flame is provided with steady flame pipe 5 when fire row 4 burns, the bottom of combustion chamber 2 is provided with discharge flue 6, steady flame pipe 5 with be provided with convection bank 7, condensation bank 8 between discharge flue 6, combustion chamber 2 is provided with water inlet 21, delivery port 22, the height of water inlet 21 is less than the height of delivery port 22, the water that waits to heat follows water inlet 21 in proper order, The condenser bank 8, the convection bank 7 and the flame holding tubes 5 flow to the water outlet 22.
Combustible gas enters the gas homogenizing chamber after being premixed in advance, is ignited and combusted after passing through the flame exhaust after being uniformly distributed by the gas distribution plate, and the flame stabilizing pipe is arranged at the inner flame part to reduce the flame temperature, thereby reducing the generation of NOx. Because the flame of the fully premixed combustion is shorter, the depth and the volume of a hearth can be reduced, and a foundation is laid for reducing the volume of a boiler. The condensing tube bundle 8 reduces the temperature of the flue gas to be below the dew point of the flue gas, so that a large amount of latent heat of vaporization is recovered, and the efficiency of the boiler is improved.
Further, the diameter of the flame stabilizing pipe 5 is smaller than the width of the inner flame of the flame when the fire grate 4 is burnt.
Further, the outer sides of the two ends of the convection bank 7 are respectively provided with a water chamber 9, the two water chambers 9 are respectively located on the two sides of the combustion chamber 2, and the water chamber 9 is provided with a water-stop sheet 91 for guiding the water flow direction. As shown in fig. 1, a plurality of water baffles are arranged in the water chamber 9, water is guided by the water baffles to sequentially wash the condensation tube bundle 8, the convection tube bundle 7, the water-cooled burner (including the fire row 4 and the flame stabilizing tube 5), and the like, and the water flow and the flue gas flow are in counter flow, so that the heat transfer temperature and pressure are maximized, and the heat exchange efficiency is improved.
Further, the convection bank 7 is a plurality of stainless steel tubes arranged in parallel, and the stainless steel tubes are arranged in a staggered manner on 2-3 horizontal planes with different heights. The high-temperature flue gas transversely scours outside the pipe, and the temperature of the flue gas is rapidly reduced.
Further, the condensation tube bundle 8 is a stainless steel spiral finned tube, the surface of the condensation tube bundle is provided with a plurality of rows of lodging fins, and a plurality of rows of narrow circulation gaps are formed between the plurality of rows of lodging fins and the base tube, so that the heating surface can go deep into the flue gas, the flue gas is divided into narrow fluid, and the heat exchange efficiency can be improved.
Further, a hollow water-cooling cavity is arranged in the middle of the fire row 4, and water flowing out of the convection bank 7 flows to the water outlet 22 along the flame stabilizing pipe 5 or the water-cooling cavity.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. The utility model provides a full premix water-cooling burning direct current boiler which characterized in that: including even air chamber (1), combustion chamber (2), even air chamber (1) is located the upper portion of combustion chamber (2) and with combustion chamber (2) intercommunication, the top of combustion chamber (2) is provided with gas distribution plate (3), the below parallel arrangement of gas distribution plate (3) has a plurality of flame bank (4), the inner flame department of flame is provided with steady flame pipe (5) when flame bank (4) burn, the bottom of combustion chamber (2) is provided with discharge flue (6), steady flame pipe (5) with be provided with convection bank (7), condenser bank (8) between discharge flue (6), combustion chamber (2) are provided with water inlet (21), delivery port (22), the height of water inlet (21) is less than the height of delivery port (22), the water of treating the heating is in proper order along water inlet (21), condenser bank (8), convection bank (7), The flame stabilizing pipe (5) flows to the water outlet (22).
2. The full premix water-cooled combustion once-through hot water boiler according to claim 1, characterized in that: the diameter of the flame stabilizing pipe (5) is smaller than the width of inner flame of flame when the fire grate (4) is combusted.
3. The full premix water-cooled combustion once-through hot water boiler according to claim 1, characterized in that: the outer sides of two ends of the convection bank (7) are respectively provided with a water chamber (9), the two water chambers (9) are respectively positioned at two sides of the combustion chamber (2), and the water chamber (9) is provided with a water-stop plate (91) used for guiding the water flow direction.
4. The full premix water-cooled combustion once-through hot water boiler according to claim 1, characterized in that: the convection bank (7) is a plurality of stainless steel pipes which are arranged in parallel, and the stainless steel pipes are arranged on 2-3 horizontal planes with different heights in a staggered mode.
5. The full premix water-cooled combustion once-through hot water boiler according to claim 1, characterized in that: the condensation tube bundle (8) is a stainless steel spiral finned tube, and a plurality of rows of lodging fins are arranged on the surface of the condensation tube bundle.
6. The full premix water-cooled combustion once-through hot water boiler according to claim 1, characterized in that: the middle part of the fire row (4) is provided with a hollow water-cooling cavity, and water flowing out of the convection bank (7) flows to the water outlet (22) along the flame stabilizing pipe (5) or the water-cooling cavity.
CN202121565907.4U 2021-07-09 2021-07-09 Full-premixing water-cooling combustion direct-current hot water boiler Active CN215675815U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121565907.4U CN215675815U (en) 2021-07-09 2021-07-09 Full-premixing water-cooling combustion direct-current hot water boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121565907.4U CN215675815U (en) 2021-07-09 2021-07-09 Full-premixing water-cooling combustion direct-current hot water boiler

Publications (1)

Publication Number Publication Date
CN215675815U true CN215675815U (en) 2022-01-28

Family

ID=79979308

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121565907.4U Active CN215675815U (en) 2021-07-09 2021-07-09 Full-premixing water-cooling combustion direct-current hot water boiler

Country Status (1)

Country Link
CN (1) CN215675815U (en)

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