CN109883051A - A kind of modular commercial gas-heating extruding aluminium alloy radiant box - Google Patents
A kind of modular commercial gas-heating extruding aluminium alloy radiant box Download PDFInfo
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- CN109883051A CN109883051A CN201910217613.3A CN201910217613A CN109883051A CN 109883051 A CN109883051 A CN 109883051A CN 201910217613 A CN201910217613 A CN 201910217613A CN 109883051 A CN109883051 A CN 109883051A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
A kind of modular commercial gas-heating extruding aluminium alloy radiant box, including multiple modular radiation heat exchanging pieces, header, end cap and gasket seal are cooperatively connected using a variety of connectors and guarantee intact burner hearth leakproofness；Modular radiation heat exchanging piece has both stable connection, positioning and sealing structure and superior heat exchange property using efficiently mature extruded aluminium technique；The quantity of heat convection, rational deployment radiant box heat absorption accounting are increased using circumferential fin；The condensing heat exchanger of burner and various power and flange-interface that the modular radiation heat exchanging piece global shape of multiplicity is adapted to various power is composed as commercial gas condenser boiler；Transition conduit uses intermediate distributary or bilateral direct-furnish form according to the cold sender property outlet of matched heat exchanger, guarantees that cold working medium stroke is consistent and uniform flow；Using being bolted entirely, sealed reliable maintenance easy to disassemble simultaneously；Combination process commercial combustion gas heating stove can be equipped with domestic cylindrical atmospheric burner and accomplish low cost, energy-efficient, the tall and erect effect advantage such as low dependence of import.
Description
Technical field
The invention belongs to improve energy utilization efficiency, energy-saving and environment-friendly radiation recuperator field, and in particular to a kind of module
Change commercial combustion gas heating extruding aluminium alloy radiant box.
Background technique
In recent years, haze problem continues, takes place frequently, and haze phenomenon is even more serious between northern heating season.To administer haze, defendance
Blue sky, central heating industry proposes " northern area winter cleaning heating planning 2017-2021 ", wherein cleaning heating rate in 2019
50% replaces dissipating 0.74 hundred million tons of coal of burning, increases 13,100,000,000 m of gas newly3；Cleaning heating rate 70% in 2021, which replaces dissipating, burns 1.5 hundred million tons of coal, newly
Increase 27,800,000,000 m of gas3；Heating Natural Gas Demand in 2021 is up to 64,100,000,000 m3With first-class many requirements.To reach planning requirement, using quotient
Industry gas heating stove is essential as systems of distributed heating systems mode, and commercial combustion gas heating stove is to be transformed into the chemical energy of natural gas
Thermal energy realizes the supply terminal of heating, is being preferably selected for systems of distributed heating systems.Its technological core is by heat source, environment, building
The flue gas that natural gas carries out after Ultra Low-oxygen, ultralow nitrogen, Ultra-High Efficiency burning is carried out the compact heat exchange of ultra high efficiency by energy saving of system theory
And exhaust gas temperature is reduced to aqueous dew point temperature hereinafter, realizing the emission reduction of system depth dynamic energy-saving.Commercial gas on sale at present
Water heater for heating has been carried out NOxDischarge is less than 30mg, while boiler efficiency is generally 96% or more, using commercial gas heating
Hot water furnace heating is a kind of mode of extremely clean and effective.Possess Ultra Low-oxygen, ultralow nitrogen, superelevation efficiency of combustion, ultra high efficiency heat exchange,
Superstructure is compact and the advantages such as the superelevation thermal efficiency indicate commercial gas water heater for heating and contain the extremely huge market demand
With development prospect.
Commercial gas water heater for heating through it is too long when development, now mainly both radiant box and convection current are board-like using integral type
The structure type that recuperative furnace piece is integrated, convenient for assembly.It is also to switch to full premix combustion from atmospheric burner in terms of burner
The use of device has this is because the excess air coefficient of all-premixing burner low (~1.2) improves the dew point of flue gas after burning
Conducive to the latent heat for absorbing vapor in flue gas, it is more suitable for condenser boiler, while the ignition temperature of all-premixing burner is low, burns
The NO generated in the processxConcentration is low.But it is ideal be different from reality, all-premixing burner find in flue gas after actual measurement oxygen content compared with
Height, mostly 7% or more and the device is complicated compared to atmospheric burner all-premixing burner, to blower, combustion head, regulating valve
More demanding and be more prone to produce burning concussion problem, easily flame-out and tempering, the most key is the pass of all-premixing burner
Key member such as valve group, control device are import, and acquisition cost is high, and central heating industry is extremely shared in the benefit, and in atmospheric burner
Whole components have realized production domesticization, and with the development deeply, scientific and technological studied now, atmospheric burner can almost be accomplished low
Excess air coefficient and low combustion temperature are run.It is suitable since atmospheric burner equipment volume and combustion flame volume are larger
The use of atmospheric burner is answered, commercial combustion gas heating stove need to be designed using split type structure, expand radiation heat transfer burner hearth
Volume is to accommodate atmospheric burner equipment and Enhanced Radiation Reduced Blast, the quantity of heat convection.
Commercial combustion gas heating stove mainly has cast iron, soldering stainless steel, cast aluminium Si-Mg alloy and full copper material.Eutectic cast iron with
Cast aluminium Si-Mg alloy all uses casting technique, and die cost is high and production efficiency is not high.Eutectic cast iron and soldering stainless steel are led
Hot coefficient is low and cast aluminium Si-Mg alloy country technique is immature, and the producer being able to produce is very few, although copper thermal coefficient is high
But at high price, intensity is low.Extruded aluminium technical maturity is the extension squeezed in the one-dimensional square of section, the simple production efficiency of structure
High thermal conductivity coefficient is high, and intensity is high, is the ideal technology of manufacture production business gas heating stove radiant box.
Still there are problems in the radiant box structure design of commercial gas water heater for heating at present, first typically
Integral type cast aluminium silicon magnesium recuperative furnace piece usually has decline channel structure, such as famous cast aluminium Gui Mei condensing heat exchanger company, Holland
Patent WO 2015/024712, WO 2016/055392A1 of shellfish Hans Kalt etc., the channel structure of the radiant section is easily subcooled
Boiling leads to heat transfer deterioration and generates the bad phenomenons such as noise even destruction heat exchanger structure since bubble squeezes, secondly full premix
The high-temperature flue gas that the wire mesh of burner and burning generate only accounts for 10% or so of total amount of heat to the radiations heat energy of radiant section, and
Without descending branch and cooperating atmospheric burner that can increase using the split type radiant box rear channel whole process of extruded aluminium technique
Radiation and the quantity of heat convection, rational deployment radiant box is interior to be matched with caloric receptivity in the board-like recuperative furnace piece of convection current, is effectively improved each
Kind structure problem simultaneously reduces cost.
Summary of the invention
In order to solve above-mentioned commercial gas water heater for heating radiant section, there are descending water road structures and Radiant exothermicity total
The small problem of the accounting of heat exchange amount is simultaneously adapted to domestic cylindrical atmospheric burner.The present invention provides a kind of modular commercial combustion gas
Heating extruding aluminium alloy radiant box.
The present invention is achieved by the following technical programs:
A kind of modular commercial gas-heating extruding aluminium alloy radiant box, including multiple modular radiation heat exchanging pieces 1, position
Lower header 2 in 1 bottom of modular radiation heat exchanging piece, the upper collecting chamber 3 positioned at 1 top of modular radiation heat exchanging piece, is located at module
Change the drive end bearing bracket 41 and rear end cap 42 at 1 both ends of radiation heat transfer part；
1 global shape of modular radiation heat exchanging piece includes bottom vertical section and upper end arc section or only arc section,
The center of circle of arc section can change along central axes, form the different arc section of various diameters, meet the big of atmospheric burner
Volume accommodates condition, while can also reduce 1 global shape sectional area of modular radiation heat exchanging piece to be adapted to the complete of low oxygen combustion
Flameless burner is premixed to meet current combustion device market supply status；
Each modular radiation heat exchanging piece 1 includes the upper collecting chamber interface for being provided with top respectively and being connected to upper collecting chamber 3
It 111 and is provided with lower header interface 112 that two side bottoms are connected to lower header 2, is provided with upper collecting chamber interface 111 and lower header
The fixation hole 12 of 112 two sides of interface and positioned at 1 one side of modular radiation heat exchanging piece groove 13 and be located at another side with it is recessed
The corresponding fin 14 of slot 13 has evenly arranged circumferential rib 15, mould on the radiation heating-surface of the inside of modular radiation heat exchanging piece 1
1 two sides bottom end of block radiation heat transfer part all has two pairs of support ridges 16, and hollow cavity is cold working medium in modular radiation heat exchanging piece 1
Channel 18, the two sides that cold 18 inner wall of working medium passage is located at fixation hole 12 are equipped with fixing belt 17, are fixed on fixation hole for preventing
72 rotation-sliding of sealing bolt in 12.
The modular radiation heat exchanging piece 1, need to be specific determining according to structural strength and heat exchange amount requirement with a thickness of 3~8mm,
Upper collecting chamber 3 and 2 two sides of lower header open up kidney ellipsoid hole, make the change for being bolted 2 height of upper collecting chamber 3 and lower header when adapting to assembly
Change；The upper end arc section of modular radiation heat exchanging piece 1 also has straight top, and the bottom end of upper collecting chamber 3 and lower header 2 can be made flat
Straight structure, assembly are simple.
The upper collecting chamber interface 111 and 112 cross sectional shape of lower header interface are circle, ellipse or kidney ellipsoid, lower header
Interface 112 be upper collecting chamber interface 111) area half, guarantee that cold working medium flow velocity, flow in modular radiation heat exchanging piece 1 are equal
Even, upper collecting chamber interface 111 and lower header interface 112 issue fixation hole 12 to pacify along the circumferential two sides of modular radiation heat exchanging piece 1
Put sealing bolt 72；The section of the fin 14 is square, and wide height is 1~2mm, and groove 13 is to match with fin 14
"T"-shaped section, insert sealant in groove 13 when assembly, cooperation fin 14 can play positioning simultaneously and seal high-temperature flue gas
Effect.
The circumferential rib 15 is to increase modular radiation with 1 heat convection ability of modular radiation heat exchanging piece is improved and change
Warmware 1 recepts the caloric the equal ribs height and section indention, SIN function waveform, kidney ellipsoid or rectangular of the total heat exchange amount ratio of Zhan
Circumferential fin.
Each pair of support ridge 16 is in symmetrical L shape section, to be clamped the link block 73 that lower part is in class " convex " word section,
For support ridge 16 with a thickness of 2~8mm, length is 20~50mm to guarantee to support the structural strength on 73 top of link block to make module enough
Change radiation heat transfer part 1 and the board-like recuperative furnace piece of convection current for being connected to 1 bottom of modular radiation heat exchanging piece closely connect；It is described solid
Determine band 17 to extend to be circumferential, is located at top side in the cold working medium passage of modular radiation heat exchanging piece 1, two 17 spacing of fixing belt and sealing
723 width of nut that 72 bottom level of bolt is 10~20mm is adapted to, and is mentioned when installing sealing bolt 72 and screwing fastening nut 721
For the power of horizontal direction, 72 rotation-sliding of sealing bolt is prevented, while placing sealing ring on 72 bottom nut 723 of sealing bolt
722, prevent cold working medium from revealed from fixation hole 12 to meet the sealing of modular radiation heat exchanging piece 1 and lower header 2 or upper collecting chamber 3
Connection.
Flows dead zone is eliminated to eliminate cold Working fluid flow state, is jumped a queue cold work to 1 bottom of modular radiation heat exchanging piece
Matter conducting element 19, the cold working medium conducting element 19 are compatible with fixing belt 17 recessed towards being provided on one side for lower header interface 112
Slot, cold working medium conducting element 19 is whole to be cooperated using stainless steel expanded joint or plastics interference fit form and modular radiation heat exchanging piece 1；
The lower header 2 is split type two, is separately positioned on 1 two sides of modular radiation heat exchanging piece, is connected by transition conduit 6, or
Lower header 2 will be designed as whole rectangular header and is arranged in 1 bottom end of modular radiation heat exchanging piece by person, under whole square structure
For header tool there are two cold working medium entrances and the not connected runner of two L shapes, the lower header of whole square structure is interior full of cold
The effective cooled flue gas side wall temperature of working medium.
The modular radiation heat exchanging piece 1 and the board-like recuperative furnace piece of convection current for being connected to 1 bottom of modular radiation heat exchanging piece
Between, between the upper surface and modular radiation heat exchanging piece 1 of the lower header of whole square structure and the next part of whole square structure
Case lower end surface and be connected to whole square structure lower header bottom the board-like recuperative furnace piece of convection current between lay gasket seal
5, because of inside, some is exposed in flue gas the gasket seal 5, need to choose with high temperature resistant material, and its section is rectangular
Trapezoidal, fume side is long side, and the other side is short side, and the angle, θ between right-angled trapezium bevel edge and right-angle side is in 2~8 °, to guarantee
Can be fully sealed when compression prevents from revealing.
The modular radiation heat exchanging piece 1 can connect cast aluminium silicon condensing heat exchanger, cast iron heat exchanger or not after assembling
Rust steel heat exchanger diversified forms heat exchanger is to constitute complete condensing boiler, and transition conduit 6 is according to the cold working medium of heat exchanger of connection
Export situation is in the midpoint of two lower headers 2 using the shunting form of one-to-two or the type of attachment of two sides direct-furnish, partial node,
Guarantee that cold working medium stroke is consistent, resistance is identical and uniform flow, transition conduit 6 is intermediate when using the shunting form of one-to-two
Branch node at be fastenedly connected using threeway connection or pressing plate.
The modular radiation heat exchanging piece 1, lower header 2 and upper collecting chamber 3 use extruding aluminium alloy material, and drive end bearing bracket 41 is with after
The lower header of end cap 42 and the whole square structure of use uses stainless steel material, and transition conduit 6 and cold working medium conducting element 19 are adopted
With thermal coefficient low steel or plastic material.
Along end cap, circumferentially 4~8 long bolt (71) connecting holes guarantee front end between the drive end bearing bracket 41 and rear end cap 42
It is closely connected between lid 41 and rear end cap 42 and multiple modular radiation heat exchanging pieces 1, the inside of drive end bearing bracket 41 and rear end cap 42 is
Fume side is laid with heat-barrier material to reduce radiation loss, prevents drive end bearing bracket 41 and 42 dry combustion method of rear end cap from leading to overheating deforming, together
When drive end bearing bracket 41 have with the circular hole of atmospheric burner size fit, spark-plug hole and with atmospheric burner flanged joint
Counter sink, rear end cap 42 then have the raised pillar being adapted to atmospheric burner head, and drive end bearing bracket 41 and rear end cap 42 ensure
Atmospheric burner is fixed on stable operation in radiant box.
Compared with prior art, the present invention has the advantage that
1, the present invention is the extension squeezed in the one-dimensional square of section using mature extruded aluminium technique, and structure simply produces
Efficiency high thermal conductivity coefficient is high, and intensity is high, is the ideal technology of manufacture production business gas heating stove radiant box.
2, the present invention uses split type radiant box, and water channel whole process solves the decline water channel of conventional radiation section without descending branch
Subcooled boiling, which easily occurs, in structure leads to heat transfer deterioration and since bubble extruding generation noise even destruction heat exchanger structure etc. is bad
The problems such as phenomenon occurs.
3, the present invention uses the split type domestic atmospheric burner of radiant box perfect cooperation of large capacity, and optimizes radiation
Chamber structure enhances heat convection ability, matches in efficient layout radiant box with caloric receptivity in the board-like recuperative furnace piece of convection current, and
Reduce cost.
4, split type radiant box is bolted using full modularization in the present invention, welding technique, and connection sealing can
It leans on and maintenance easy to disassemble, meets various heat exchange capacity demands, market adaptability is strong.
Detailed description of the invention
Fig. 1 is the total schematic diagram of commercial combustion gas heating extruding aluminium alloy radiant box of the present invention.
Fig. 2 is modular radiation heat exchanging piece schematic diagram, in which: Fig. 2 a1 is whole arc-shaped structure schematic shapes, figure
2a2 is bottom vertical section and upper end arc section and straight roof construction schematic shapes, and Fig. 2 b is stereoscopic schematic diagram, and Fig. 2 c is top
Sectional view, Fig. 2 d are bottom schematic view.
Fig. 3 is connector schematic diagram, in which: Fig. 3 a is sealing bolt schematic diagram, and Fig. 3 b is link block schematic diagram.
Fig. 4 is lower header using whole square structure schematic diagram, in which: Fig. 4 a is stereoscopic schematic diagram, and Fig. 4 b is that section is cold
Working fluid flow schematic diagram, Fig. 4 c are assembling schematic diagram.
Fig. 5 is the upper collecting chamber assembling schematic diagram for opening up kidney ellipsoid hole and having lower arcuate surface.
Fig. 6 is the gasket seal schematic cross-section that part is exposed in flue gas.
Fig. 7 is key position assembly connection schematic diagram, and wherein Fig. 7 a is cross-sectional view, and Fig. 7 b is explosive view.
Fig. 8 is cold working medium conducting element schematic diagram, and wherein Fig. 8 a is stereoscopic schematic diagram, and Fig. 8 b is side half sectional view, and Fig. 8 c is
Side half sectional view is assembled with modular radiation heat exchanging piece, Fig. 8 d is that cold working medium conducting element is jumped a queue into the position of modular radiation heat exchanging piece
Set schematic diagram.
Fig. 9 is the board-like recuperative furnace piece of convection current of commercial combustion gas heating extruding aluminium alloy radiant box of the present invention and burner hearth bottom
General assembly schematic diagram.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
Case study on implementation one
As shown in Figure 1, a kind of modular commercial gas-heating extruding aluminium alloy radiant box of the present invention, including multiple modules
Change radiation heat transfer part 1, the lower header 2 positioned at 1 bottom of modular radiation heat exchanging piece, positioned at 1 top of modular radiation heat exchanging piece
Upper collecting chamber 3, drive end bearing bracket 41 and rear end cap 42 positioned at 1 both ends of modular radiation heat exchanging piece.
As shown in Fig. 2 b, Fig. 2 c, Fig. 2 d, the modular radiation heat exchanging piece 1 includes being provided with top to be connected to upper collecting chamber 3
Upper collecting chamber interface 111 and be provided with lower header interface 112 that two side bottoms are connected to lower header 2, be provided with upper collecting chamber and connect
Mouthfuls 111 and 112 two sides of lower header interface fixation hole 12 and positioned at 1 one side of modular radiation heat exchanging piece groove 13 and be located at
Another side fin 14 corresponding with groove 13 has uniformly arrangement on the radiation heating-surface of the inside of modular radiation heat exchanging piece 1
Circumferential rib 15,1 two sides bottom end of modular radiation heat exchanging piece all has two pairs of support ridges 16, in modular radiation heat exchanging piece 1 in
Cavity body is cold working medium passage 18, and the two sides that cold 18 inner wall of working medium passage is located at fixation hole 12 are equipped with fixing belt 17, for preventing
72 rotation-sliding of sealing bolt being only fixed in fixation hole 12.
The modular radiation heat exchanging piece 1, need to be specific determining according to structural strength and heat exchange amount requirement with a thickness of 3~8mm,
As shown in Fig. 2 a1,1 global shape of modular radiation heat exchanging piece is in arc section, and the center of circle of arc section can change along central axes, shape
At the different arc section of various diameters, meet the condition of receiving of the biggish volume appearance of atmospheric burner, while can also reduce
1 global shape sectional area of modular radiation heat exchanging piece is current to meet to be adapted to the full premix flameless burner of existing low oxygen combustion
Burner market supply status.
As shown in Figure 2 b, the upper collecting chamber interface 111 and 112 cross sectional shape of lower header interface are circle, ellipse or waist
Circle, 112 sectional area of lower header interface are the half of upper collecting chamber interface 111, guarantee cold working medium in modular radiation heat exchanging piece 1
Flow velocity, uniform flow, upper collecting chamber interface 111 and lower header interface 112 issue fixation along the circumferential two sides of modular radiation heat exchanging piece 1
Hole 12 is to place sealing bolt 72.
As shown in Fig. 2, the section of the fin 14 is square, wide height is 1~2mm, and groove 13 is and fin 14
The T section to match inserts sealant in groove 13 when assembly, and cooperation fin 14 can play positioning and sealing high temperature cigarette simultaneously
The effect of gas.
As shown in Figure 2 c, the circumferential rib 15 is evenly spaced in the radiation heating-surface of modular radiation heat exchanging piece 1 by rule
On, with 1 heat convection ability of modular radiation heat exchanging piece is improved, to increase the caloric receptivity of modular radiation heat exchanging piece 1 Zhan Zonghuan
The equal ribs of heat ratio are high and section indention, SIN function waveform, kidney ellipsoid, rectangular circumferential fin.
As shown in Figure 2 d, each pair of support ridge 16 is in symmetrical L shape section, to be clamped support link block 73, support
With a thickness of 2~8mm, length is 20~50mm to be made modular radiation heat exchanging piece (1) to guarantee structural strength and is connected to ridge 16
The board-like recuperative furnace piece of the convection current of 1 bottom of modular radiation heat exchanging piece closely connects.
As shown in Fig. 2 c, Fig. 2 d, the fixing belt 17 is circumferential extension, logical in the cold working medium of modular radiation heat exchanging piece 1
Road top side, two 17 spacing of fixing belt are adapted to 723 width of nut that 72 bottom level of sealing bolt is 10~20mm, are installing
Sealing bolt 72 provides the power of horizontal direction when screwing fastening nut 721, prevents 72 rotation-sliding of sealing bolt, while sealing spiral shell
Sealing ring 722 is placed on 72 bottom nut 723 of bolt, prevents cold working medium from revealing from fixation hole 12 to meet modular radiation heat exchange
The sealed connection of part 1 and lower header 2 or upper collecting chamber 3.
As shown in figure 5, the upper collecting chamber 3 and lower header 2 have the lower arcuate surface to match with modular radiation heat exchanging piece 1,
Two sides, which open up kidney ellipsoid hole, makes the variation for being bolted 2 height of upper collecting chamber 3 and lower header when adapting to assembly.
As shown in Fig. 1, Fig. 4 c, along end cap, circumferentially 4~8 long bolts 71 connect between the drive end bearing bracket 41 and rear end cap 42
It connects hole to guarantee closely to connect between drive end bearing bracket 41 and rear end cap 42 and multiple modular radiation heat exchanging pieces 1, drive end bearing bracket 41 and rear end
The fume side of lid 42 is laid with the heat-barrier material of suitable thickness with maximum reduction radiation loss, prevents drive end bearing bracket 41 and rear end cap
42 dry combustion methods lead to overheating deforming, at the same drive end bearing bracket 41 have with the circular hole of atmospheric burner size fit, spark-plug hole and with
The counter sink of burner flanged joint, rear end cap 42 then have the raised pillar being adapted to burner head, and drive end bearing bracket 41 is with after
End cap 42 ensures that cylindrical atmospheric burner is fixed on stable operation in radiant box.
As shown in fig. 6, the modular radiation heat exchanging piece 1 and the convection-plate for being connected to 1 bottom of modular radiation heat exchanging piece
Between formula recuperative furnace piece, between the upper surface and modular radiation heat exchanging piece 1 of the lower header of whole square structure and whole rectangular knot
The lower header lower end surface of structure and be connected to whole square structure lower header bottom the board-like recuperative furnace piece of convection current between place
There is gasket seal 5, because of inside, some is exposed in flue gas the gasket seal 5, it need to choose with high temperature resistant material, and its
Section is in a rectangular trapezoid, and fume side is long side, and the other side is short side, and the angle, θ between right-angled trapezium bevel edge and right-angle side in 2~
It 8 °, prevents from revealing to guarantee to be fully sealed when compressing.
As shown in figure 9, the modular radiation heat exchanging piece 1 can connect cast aluminium silicon condensing heat exchanger after assembling, cast iron changes
The diversified forms such as hot device or stainless heat exchanger heat exchanger to constitute complete condensing boiler, change according to connection by transition conduit 6
The hot cold sender property outlet situation of device is in two lower headers using the shunting form of one-to-two or the type of attachment of two sides direct-furnish, partial node
2 midpoint guarantees that cold working medium stroke is consistent, resistance is identical and uniform flow, and transition conduit 6 is in the shunting form using one-to-two
When, it is fastenedly connected using threeway connection or pressing plate at intermediate branch node.
As shown in Figure 1, the long bolt 71 is for connecting multiple modular radiation heat exchanging pieces 1 and front and rear cover 4；Such as Fig. 3 a
Shown, sealing bolt 72 is used for link block radiation heat transfer part 1, lower header 2 and upper collecting chamber 3；As shown in Figure 3b, link block 73
For link block radiation heat transfer part 1 and the board-like recuperative furnace piece of convection current for being connected to 1 bottom of modular radiation heat exchanging piece.
72 bottom of sealing bolt is nut 723, is highly 10~20mm, screws fastening spiral shell in installation sealing bolt 72
The power of horizontal direction is provided when mother 721, prevents 72 rotation-sliding of sealing bolt, 72 top of sealing bolt is cylindrical structure, inside and outside
It is provided with screw thread, external screw-thread is fastened on sealing bolt 72 in modular radiation heat exchanging piece 1 screwing on fastening nut 721,
As shown in Figure 7a, internal whorl, which screws in corresponding bolt, connect sealing bolt 72 closely with lower header 2 or upper collecting chamber 3, seals
Sealing ring 722 is placed in 72 bottom nut structure of bolt, prevents cold working medium from revealing from fixation hole 12.
73 bottom of link block is provided with that threaded hole makes modular radiation heat exchanging piece 1 to joint bolt and convection current is board-like changes
Hot stove piece closely connects, and 73 lower part of link block cooperates in the support ridge 16 in class " convex " word section and symmetrical L shape section to be clamped, even
It connects 73 top of block to be square, 73 top of link block, which compresses support ridge 16, makes modular radiation heat exchanging piece 1 and the board-like recuperative furnace of convection current
Piece closely connects, as shown in Fig. 7 a, Fig. 7 b.
The modular radiation heat exchanging piece 1, lower header 2 and upper collecting chamber 3 use extruding aluminium alloy material, and drive end bearing bracket 41 is with after
End cap 42 and the lower header for using bottom to set whole square structure use stainless steel material, and transition conduit 6 is low using thermal coefficient
Steel or plastic material.
Case study on implementation two
Fig. 2 a2 is the modular radiation heat exchanging piece signal of bottom vertical section and upper end arc section and straight roof construction shape
Figure.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
1 global shape of modular radiation heat exchanging piece includes bottom vertical section and upper end arc section, while upper end circular arc
Section has straight top, can make the bottom end flat construction of upper collecting chamber 3 and lower header 2, makes extrusion process and assembling process more
Simply.
Case study on implementation three
Fig. 4 is lower header using whole square structure schematic diagram, in which: Fig. 4 a is stereoscopic schematic diagram, and Fig. 4 b is that section is cold
Working fluid flow schematic diagram, Fig. 4 c are assembling schematic diagram.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The lower header 2 is whole square structure design, 1 bottom end of modular radiation heat exchanging piece is arranged in, to optimize cold work
The 1 cold Working fluid flow dead zone in bottom of matter flow regime cancellation module radiation heat transfer part, lower header 2 tool there are two cold working medium entrances with
The not connected runner of two L shapes, the lower header of whole square structure is interior to be full of the effective cooled flue gas side wall temperature of cold working medium.
Case study on implementation four
Fig. 8 is cold working medium conducting element schematic diagram, and wherein Fig. 8 a is stereoscopic schematic diagram, and Fig. 8 b is side half sectional view, and Fig. 8 c is
Side half sectional view is assembled with modular radiation heat exchanging piece, Fig. 8 d is that cold working medium conducting element is jumped a queue into the position of modular radiation heat exchanging piece
Set schematic diagram.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
When the modular radiation heat exchanging piece 1 is using two lower headers 2 of side, lower header interface 112 and modular radiation
Difference in height existing for 1 bottom end of heat exchanging piece will lead to 1 bottom end of modular radiation heat exchanging piece, and there are cold Working fluid flow dead zones, dead to eliminate
Area carries out water conservancy diversion improvement using cold working medium conducting element, jumps a queue cold working medium conducting element 19 to 1 bottom of modular radiation heat exchanging piece, described
Cold working medium conducting element 19 is provided with groove compatible with fixing belt 17 towards lower header interface 112 on one side, last cold working medium stream
For flowing mode as shown in being directed toward arrow in Fig. 8 c, cold working medium conducting element 19 is whole to be interference fitted form using stainless steel expanded joint or plastics
Modular radiation heat exchanging piece 1 cooperates.
Claims (10)
1. a kind of modular commercial gas-heating extruding aluminium alloy radiant box, including multiple modular radiation heat exchanging pieces (1), position
Lower header (2) in modular radiation heat exchanging piece (1) bottom, the upper collecting chamber (3) being located at the top of modular radiation heat exchanging piece (1),
Drive end bearing bracket (41) and rear end cap (42) positioned at modular radiation heat exchanging piece (1) both ends；
Modular radiation heat exchanging piece (1) global shape includes bottom vertical section and upper end arc section or only arc section, circle
The center of circle of segmental arc can change along central axes, form the different arc section of various diameters, meet atmospheric burner substantially
Product receiving condition, while can also reduce modular radiation heat exchanging piece (1) global shape sectional area to be adapted to the complete of low oxygen combustion
Flameless burner is premixed to meet current combustion device market supply status；
Each modular radiation heat exchanging piece (1) includes the upper collecting chamber interface for being provided with top respectively and being connected to upper collecting chamber (3)
(111) it and is provided with lower header interface (112) that two side bottoms are connected to lower header (2), is provided with upper collecting chamber interface (111)
With the fixation hole (12) of lower header interface (112) two sides and be located at modular radiation heat exchanging piece (1) one side groove (13) and
Positioned at another side fin (14) corresponding with groove (13), have on the radiation heating-surface on the inside of modular radiation heat exchanging piece (1)
Have evenly arranged circumferential rib (15), modular radiation heat exchanging piece (1) two sides bottom end all has two pairs of support ridges (16), modularization
Radiation heat transfer part (1) interior hollow cavity is cold working medium passage (18), and cold working medium passage (18) inner wall is located at fixation hole (12)
Two sides are equipped with fixing belt (17), for preventing sealing bolt (72) rotation-sliding being fixed in fixation hole (12).
2. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, it is characterised in that:
The modular radiation heat exchanging piece (1) need to require specific determining, upper collecting chamber with a thickness of 3~8mm according to structural strength and heat exchange amount
(3) and lower header (2) two sides open up kidney ellipsoid hole, make to be bolted upper collecting chamber (3) and lower header (2) height when adapting to assembly
Variation；The upper end arc section of modular radiation heat exchanging piece (1) also has straight top, can make upper collecting chamber (3) and lower header (2)
Bottom end is flat construction, and assembly is simple.
3. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, it is characterised in that:
The upper collecting chamber interface (111) and lower header interface (112) cross sectional shape are circle, ellipse or kidney ellipsoid, lower header interface
(112) be upper collecting chamber interface (111)) area half, guarantee cold working medium flow velocity, flow in modular radiation heat exchanging piece (1)
Uniformly, upper collecting chamber interface (111) and lower header interface (112) issue fixation hole along the circumferential two sides of modular radiation heat exchanging piece (1)
(12) to place sealing bolt (72)；The section of the fin (14) is square, and wide height is 1~2mm, groove (13)
For the "T"-shaped section to match with fin (14), sealant is inserted in groove (13) when assembly, cooperation fin (14) can rise simultaneously
To the effect for positioning and sealing high-temperature flue gas.
4. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, it is characterised in that:
The circumferential rib (15) is to increase modular radiation heat exchanging piece with modular radiation heat exchanging piece (1) the heat convection ability of raising
(1) the equal ribs height of the total heat exchange amount ratio of Zhan that recepts the caloric and section indention, SIN function waveform, kidney ellipsoid or rectangular week
To fin.
5. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, it is characterised in that:
Each pair of support ridge (16) is in symmetrical L shape section, to be clamped the link block (73) that lower part is in class " convex " word section, support
For ridge (16) with a thickness of 2~8mm, length is 20~50mm to guarantee to support the structural strength on link block (73) top to make module enough
Change radiation heat transfer part (1) and the board-like recuperative furnace piece of convection current for being connected to modular radiation heat exchanging piece (1) bottom closely connect；Institute
It states fixing belt (17) to extend to be circumferential, is located at top side in modular radiation heat exchanging piece (1) cold working medium passage, two fixing belts (17)
Spacing is adapted to nut (723) width that sealing bolt (72) bottom level is 10~20mm, is revolved in installation sealing bolt (72)
The power of horizontal direction is provided when tight fastening nut (721), prevents sealing bolt (72) rotation-sliding, while sealing bolt (72) bottom
Sealing ring (722) are placed on portion's nut (723), prevent the leakage from fixation hole (12) of cold working medium from exchanging heat to meet modular radiation
The sealed connection of part (1) and lower header (2) or upper collecting chamber (3).
6. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, it is characterised in that:
Flows dead zone is eliminated to eliminate cold Working fluid flow state, is jumped a queue cold working medium water conservancy diversion to modular radiation heat exchanging piece (1) bottom
Part (19), the cold working medium conducting element (19) are compatible recessed with fixing belt (17) towards being provided on one side for lower header interface 112
Slot, cold working medium conducting element (19) is integrally using stainless steel expanded joint or plastics interference fit form and modular radiation heat exchanging piece (1)
Cooperation；The lower header (2) is split type two, is separately positioned on modular radiation heat exchanging piece (1) two sides, passes through transition conduit
(6) it connects, or lower header (2) will be designed as to whole rectangular header and be arranged in modular radiation heat exchanging piece (1) bottom end, it is whole
The lower header of body square structure has there are two cold working medium entrances and the not connected runner of two L shapes, whole square structure
The effective cooled flue gas side wall temperature of cold working medium is full of in lower header.
7. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 6, feature exist
In: the modular radiation heat exchanging piece (1) and the board-like recuperative furnace piece of convection current for being connected to modular radiation heat exchanging piece (1) bottom
Between, between the upper surface and modular radiation heat exchanging piece (1) of the lower header of whole square structure and under entirety square structure
Header lower end surface and be connected to whole square structure lower header bottom the board-like recuperative furnace piece of convection current between lay gasket
Piece (5), because of inside, some is exposed in flue gas the gasket seal (5), need to choose with high temperature resistant material, and its section
In a rectangular trapezoid, fume side is long side, and the other side is short side, and the angle, θ between right-angled trapezium bevel edge and right-angle side is in 2~8 °,
It prevents from revealing to guarantee to be fully sealed when compressing.
8. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 6, feature exist
Cast aluminium silicon condensing heat exchanger, cast iron heat exchanger or stainless steel can be connected after: the modular radiation heat exchanging piece (1) assembles
To constitute complete condensing boiler, transition conduit (6) goes out heat exchanger diversified forms heat exchanger according to the cold working medium of heat exchanger of connection
Mouth situation is in the midpoint of two lower headers (2) using the shunting form of one-to-two or the type of attachment of two sides direct-furnish, partial node,
Guarantee that cold working medium stroke is consistent, resistance is identical and uniform flow, transition conduit (6) using one-to-two shunting form when, in
Between branch node at be fastenedly connected using threeway connection or pressing plate.
9. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 6, feature exist
In: the modular radiation heat exchanging piece (1), lower header (2) and upper collecting chamber (3) use extruding aluminium alloy material, drive end bearing bracket (41)
Stainless steel material is used with rear end cap (42) and using the lower header of whole square structure, transition conduit (6) and cold working medium are led
Flow part (19) steel or plastic material low using thermal coefficient.
10. a kind of modular commercial gas-heating extruding aluminium alloy radiant box according to claim 1, feature exist
In: along end cap, circumferentially 4~8 long bolt (71) connecting holes guarantee drive end bearing bracket between the drive end bearing bracket (41) and rear end cap (42)
(41) it is closely connect between rear end cap (42) and multiple modular radiation heat exchanging pieces (1), drive end bearing bracket (41) and rear end cap (42)
Inside, that is, fume side be laid with heat-barrier material to reduce radiation loss, prevent drive end bearing bracket (41) and rear end cap (42) dry combustion method from causing
Overheating deforming, while drive end bearing bracket (41) has with the circular hole of atmospheric burner size fit, spark-plug hole and fires with air suspended type
The counter sink of burner flanged joint, rear end cap (42) then have the raised pillar being adapted to atmospheric burner head, drive end bearing bracket
(41) and rear end cap (42) ensures that atmospheric burner is fixed on stable operation in radiant box.
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| CN201910217613.3A CN109883051B (en) | 2019-03-21 | 2019-03-21 | Modularized commercial fuel gas heating extrusion aluminum alloy radiation hearth |
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Cited By (1)
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| WO2022012398A1 (en) * | 2020-07-16 | 2022-01-20 | 西安交通大学 | Single-boiler-sheet series cast aluminum-silicon water heater coupled to pre-mixing water-cooling combustor |
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| Publication number | Publication date |
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| CN109883051B (en) | 2023-08-18 |
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