CN102901221B - A kind of pressure fin straight pipe condensation Heat supply and heat exchange device - Google Patents
A kind of pressure fin straight pipe condensation Heat supply and heat exchange device Download PDFInfo
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- CN102901221B CN102901221B CN201210353552.1A CN201210353552A CN102901221B CN 102901221 B CN102901221 B CN 102901221B CN 201210353552 A CN201210353552 A CN 201210353552A CN 102901221 B CN102901221 B CN 102901221B
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- 238000009833 condensation Methods 0.000 title claims abstract description 52
- 230000005494 condensation Effects 0.000 title claims abstract description 52
- 241000242583 Scyphozoa Species 0.000 claims abstract description 69
- 238000007599 discharging Methods 0.000 claims abstract description 56
- 239000000779 smoke Substances 0.000 claims abstract description 56
- 238000003491 array Methods 0.000 claims abstract description 29
- 238000009827 uniform distribution Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000005452 bending Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 33
- 239000003546 flue gas Substances 0.000 description 33
- 238000010586 diagram Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000003517 fume Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
- F24H8/006—Means for removing condensate from the heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/403—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the water tubes being arranged in one or more circles around the burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/406—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the tubes forming a membrane wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
- F24H1/445—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40 with integrated flue gas condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/087—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0084—Combustion air preheating
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The invention discloses a kind of pressure fin straight pipe condensation Heat supply and heat exchange device, comprise housing, burner and a plurality of fin straight tube, burner is positioned at housing upper, one group of fin straight tube bundle by the tight circumference uniform distribution of a plurality of fin straight tubes is installed around burner, be provided with the smoke discharging pipe be made up of housing and a plurality of close-packed arrays fin straight tube below burner, smoke discharging pipe is emptying by exhaust opening; Described fin straight tube two ends are respectively front jellyfish Guan Yuhou jellyfish pipe, and be provided with dividing plate in rear jellyfish pipe, rear jellyfish pipe is divided into inlet area and outlet area by dividing plate; Current enter a part of fin straight tube by inlet area, and jellyfish pipe before arriving, then current enter the outlet area of rear jellyfish pipe again by another part fin straight tube.The present invention adopts infolding fin straight tube as the primary element forcing fin straight pipe condensation Heat supply and heat exchange device, significantly improves heat exchange efficiency.
Description
Technical field
The invention belongs to Thermal Equipment field, specifically relate to a kind of pressure fin straight pipe condensation Heat supply and heat exchange device.
Background technology
After 20th century Middle East Oil Crisis, be economize energy, just have developed the condenser boiler of high thermal efficiency in Europe, its distinguishing feature is that thermal efficiency ratio conventional design boiler improves more than 10%.Owing to making the exhaust gas temperature of boiler be reduced to more than dew point, a large amount of water vapour condensation in flue gas also discharges the latent heat of vaporization, has obvious energy-saving effect, and the condensing heat exchanger applied in condenser boiler develops according to its principle exactly.
Fuel gas buring can comprise latent heat two parts of water vapour in the sensible heat of flue gas and flue gas for the heat utilized.Plain edition heat exchanger is by the restriction of its structure, and high fume temperature, can only utilize the low heat value part of combustion gas; Condensing heat exchanger due to exhaust gas temperature very low, the sensible heat that fully can not only absorb flue gas can also absorb latent heat, utilization be the high heating value of flue gas.Therefore, the utilization efficiency of heat energy of condensing heat exchanger can improve greatly.In order to fully absorb the heat of high-temperature flue gas and collect condensate water, it generally adopts secondary heat exchange mode, during work, high-temperature flue gas enters sensible heat exchanger and condensation segment heat exchanger successively from the bottom to top, and water (flow) direction is just in time contrary, first through condensation segment heat exchanger, cold water after condensation segment heat exchanger absorbs high-temperature flue gas waste heat, then enters main heat exchanger absorption flame sensible heat.After heat exchanger absorbs sensible heat and latent heat, flue-gas temperature will be down to normal temperature, discharged by top flue, in order to safe and reliable discharge flue gas, condensing heat exchanger adopts the mode of forced fume exhaust to discharge flue gas, make the condensation as much as possible of the water vapour in flue gas, this just make the latent heat amount that absorbed by the water that heats and sensible heat amount more, its energy-saving effect is better.Therefore condensing heat exchanger make use of the heat fallen as flue gas loss, heat loss due to exhaust gas has been become useful heat, and the degree that this part heat effectively utilizes determines the energy-saving effect of condensing heat exchanger.
But enter the flue gas of condensing heat exchanger generally in superheat state, along with the reduction of flue-gas temperature and the condensation of steam, flue gas is gradually to saturation state transition, and finally reach capacity state.Experimentally measure, when exhaust gas temperature is at 50 ° of about C, condensing heat exchanger exhanst gas outlet state is close to saturation state, and component, the heat exchanger structure of close degree and flue gas are relevant with heat and mass transfer process.Experimental data shows, and in prior art, the flow path of flue gas still exists much " dead band " phenomenon or " short circuit " state, reduces heat exchange efficiency.
1. the Heat supply and heat exchange device of traditional non-condensing boiler is made up of carbon steel or cast iron, and the exhaust gas temperature when designing is general all higher than 150 DEG C, does not consider to absorb water vapor condensation in flue gas and discharges a large amount of sensible heat and latent heat, do not have condensed water to produce.
2. condensing boiler has the feature of high-efficient energy-saving environment friendly, is the developing direction of boiler industry and is promoted widely.Condensing boiler is owing to creating a large amount of faintly acid condensed water, if use the materials such as conventional steel plate or cast iron to manufacture condensing boiler Heat supply and heat exchange device by the life-span of serious curtailment condensing boiler, so condensing boiler Heat supply and heat exchange device must use stainless steel or cast aluminium to be processed into.At present, stainless steel bare tube or the cast aluminium of adopting is made more.
3. be mature on the whole by the technology of cast-aluminum die processing heat exchanger, but the many Heat supply and heat exchange devices of 500KW can only be made.It is high to there is die cost in large-scale cast aluminium piece, and processing technology is complicated, the problem that product rejection rate is high, and making cannot with cast-aluminum die direct machining large Heat supply and heat exchange device.
4. in normal circumstances, the thermal efficiency can reach about 96% at most to these two kinds of heat exchangers.
5., when the return water temperature of boiler is higher than 60 DEG C, boiler will not produce condensed water.At this moment heat exchanger can only sensible heat in recovered flue gas, and the thermal efficiency also only has about 87%.
6. air preheater generally adopts in the large-sized boilers such as power station.Also do not adopt in heating boiler.
7. traditional Heat supply and heat exchange device demand different according to client manufactures and designs the Heat supply and heat exchange device varied in size, and heat exchanger varies in size, and required parts are also different, are unfavorable for industrialized mass production.
Summary of the invention
In view of above-mentioned prior art Problems existing, propose the present invention.
Therefore, the technical problem to be solved in the present invention is, how to overcome the not enough problem causing the heat exchange of flow of flue gas path insufficient of heat exchanger structure design in prior art, how to improve heat-transfer area structure and increase to reach the object that heat exchange area improves heat exchange efficiency, make boiler can do less under Same Efficieney simultaneously, take less volume, and how air preheater is attached in heat exchanger cleverly, thus carry out secondary heat exchange, reduce exhaust gas temperature further while the initial temperature that raising air enters.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of pressure fin straight pipe condensation Heat supply and heat exchange device, comprise housing, be arranged at the burner in housing and a plurality of fin straight tube, housing is provided with water inlet, delivery port and exhaust opening, burner is connected with air and gas inlet device: burner is positioned at housing upper, one group of fin straight tube bundle by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner, the smoke discharging pipe be made up of housing and a plurality of close-packed arrays fin straight tube is provided with below burner, smoke discharging pipe is emptying by exhaust opening, described fin straight tube two ends are respectively front jellyfish Guan Yuhou jellyfish pipe, and be provided with dividing plate in rear jellyfish pipe, rear jellyfish pipe is divided into inlet area and outlet area by dividing plate, current enter a part of fin straight tube by inlet area, and jellyfish pipe before arriving, then current enter the outlet area of rear jellyfish pipe again by another part fin straight tube.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: be provided with dividing plate in described rear jellyfish pipe, rear jellyfish pipe is divided into inlet area and outlet area by dividing plate; Current enter the described fraction fin straight tube of fin straight tube bundle and the fin straight tube of described smoke discharging pipe by inlet area, jellyfish pipe before arriving, then current enter the outlet area of rear jellyfish pipe again by another part fin straight tube of described fin straight tube bundle.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: be provided with dividing plate in described rear jellyfish pipe, rear jellyfish pipe is divided into inlet area and outlet area by dividing plate; The fin straight tube of described circumference uniform distribution is identical with the diameter of the fin straight tube forming smoke discharging pipe, and the quantity of the fin straight tube of described inlet area is equal with the quantity of the fin straight tube of outlet area; Or the fin straight tube of described circumference uniform distribution is not identical with the diameter of the fin straight tube forming smoke discharging pipe, the sectional area sum of the fin straight tube of described inlet area is equal with the sectional area sum of the fin straight tube of outlet area.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: the fin adjacent to described compact arranged fin straight tube carries out bending or extrusion process, make finned tube both sides fin infolding at an angle, two infolding faces that finned tube is formed are parallel or present certain angle.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: the arranged outside of the fin straight tube bundle be made up of a plurality of fin straight tube close-packed arrays around described burner has outer deflector.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: described outer deflector " V " type strip deflector that to be cross section be with radian, fit with outside fin straight tube, the adjacent of compact arranged fin straight tube and the flow-guiding mouth of outer deflector stagger mutually.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: the inner side forming the fin straight tube of smoke discharging pipe below described burner is provided with inner deflector, described inner deflector " V " type strip deflector that to be cross section be with radian, fit with fin straight tube, the compact arranged adjacent of fin straight tube and the flow-guiding mouth of inner deflector stagger mutually.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: in described smoke discharging pipe, be provided with air preheater; Described air preheater is connected with air inlet device through smoke discharging pipe; Described exhaust opening is tubing type exhaust opening, and its upper end is exhaust opening, and its lower end is condensation-water drain, and middle part is the air intlet of air preheater.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: the air preheater in described smoke discharging pipe is one or more cuboid or cylindrical air air inlet pipe.
As a kind of preferred version of pressure fin straight pipe condensation Heat supply and heat exchange device of the present invention, wherein: burner is positioned at lower housing portion, one group of fin straight tube bundle by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner, be provided with the smoke discharging pipe be made up of housing and a plurality of close-packed arrays fin straight tube above burner, smoke discharging pipe is emptying by exhaust opening; Described fin straight tube two ends are respectively front jellyfish Guan Yuhou jellyfish pipe, and be provided with dividing plate in rear jellyfish pipe, rear jellyfish pipe is divided into inlet area and outlet area by dividing plate; Current enter the described fraction fin straight tube of fin straight tube bundle and the fin straight tube of described smoke discharging pipe by inlet area, jellyfish pipe before arriving, then current enter the outlet area of rear jellyfish pipe again by another part fin straight tube of described fin straight tube bundle.
Adopt technical scheme of the present invention, there is following Advantageous Effects:
Integral arrangement of the present invention can improve heat exchange efficiency.Present invention employs burner and be arranged on top, exhaust opening is arranged on the secondary countercurrent flow arrangement of below, flue gas after burner combustion flows downward above heat exchanger, first through finned tube and outer deflector around burner, then through finned tube and the inner deflector of smoke discharging pipe, along smoke discharging pipe, adverse current is emptying to exhaust opening.And water inlet is arranged on exhaust opening place, bottom, delivery port is arranged on heat exchanger top, and water is by water inlet, finned tube, and heat exchanger two ends connect the cavity of upper and lower finned-tube bundle, such as, can be front jellyfish pipe and stepmother's water pipe, discharge eventually through delivery port.Take the heat exchange mode of adverse current, the outlet temperature of water, just more likely higher than exhaust gas temperature, can improve heat exchange efficiency greatly, increases heat exchange amount.
The present invention arranges suitable dividing plate in the female pipe of water inlet, by baffle for separating current first have passed through B-grade condensation heat exchange a plurality of fin straight tube of a line and by fraction circumference uniform distribution fin straight tube bundle, then through one-level sensible heat transfer from the water outlet of circumference uniform distribution residue fin straight tube bundle.Arrange dividing plate, the part straight tube of " rationally using " circumference uniform distribution fin straight tube bundle, as water inlet pipe, just can adopt the fin straight tube of unified specification, reduces parts kind.Key components and parts modularized design, is easy to mass production, reduces the production difficulty of heat exchanger, saves production cost, and meanwhile, the distance controlled between flame and heat exchanger surface reduces flame temperature, and then makes NO
xdischarge be reduced to below 30PPM.
Finned tube after secondary operations of the present invention can significantly improve heat exchange efficiency.The present invention adopts finned tube as the primary element forcing fin straight pipe condensation Heat supply and heat exchange device, on the surface of heat exchanger tube by with fin, increase the external surface area of heat exchanger tube thus reach the object improving heat exchange efficiency, enhancing the heat exchange of fume side, whole heat exchanger volume can be made to reduce further.By carrying out secondary operations to fin, such as bending, extruding or cutting, spacing between the light pipe of finned tube is obviously reduced, thus make flue gas stream and light pipe carry out contact scour more fully, strengthen heat exchange, improve turbulent fluctuation degree, increase convection transfer rate, effectively reach the object strengthening heat transfer, improve heat exchange efficiency, make whole heat exchanger volume reduce further simultaneously.
The present invention is provided with outer, inner deflector, is conducive in " dead band " that reduce flue gas stream, improves shell-side fluid velocity flow profile further.In the present invention, by increasing some outer deflectors outside circumference finned-tube bundle and between shell and being positioned at the inner deflector inside smoke discharging pipe finned-tube bundle, the flow path of flue gas is made to be close to fin and light pipe, heat exchange can be strengthened further, obviously improve shell-side fluid velocity flow profile, reduce in " dead band " or " short circuit " of flue gas stream.
The present invention is further provided with air preheater, can raise the efficiency.In the present invention, air preheater combines dexterously and is arranged in the discharge duct of heat exchanger, when reaching less than-20 DEG C at winter makes outdoor air, fume afterheat is utilized to improve the air themperature entering burner hearth, further reduction exhaust gas temperature, makes efficiency reach more than 98%, has positive effect.
Accompanying drawing explanation
Fig. 1 forces the right side of fin straight pipe condensation Heat supply and heat exchange device to look schematic diagram described in one embodiment of the invention.
Fig. 2 is the main body schematic diagram forcing fin straight pipe condensation Heat supply and heat exchange device described in one embodiment of the invention.
Fig. 3 is the schematic perspective view forcing fin straight pipe condensation Heat supply and heat exchange device described in one embodiment of the invention.
Fig. 4 is the structure cross-sectional schematic of forcing fin straight pipe condensation Heat supply and heat exchange device in one embodiment of the invention.
Fig. 5 is the operation principle schematic diagram forcing fin straight pipe condensation Heat supply and heat exchange device in one embodiment of the invention.
Fig. 6 is that schematic diagram is looked on the operation principle right side of pressure fin straight pipe condensation Heat supply and heat exchange device with an air preheater in one embodiment of the invention.
Fig. 7 is that A of the present invention is to enlarged diagram.
Fig. 8 is that B of the present invention is to enlarged diagram.
Fig. 9 is the structure cross-sectional schematic of the pressure fin straight pipe condensation Heat supply and heat exchange device of another embodiment of the present invention burner when being positioned at bottom.
Figure 10 is the operation principle schematic diagram of the pressure fin straight pipe condensation Heat supply and heat exchange device of another embodiment of the present invention burner when being positioned at bottom.
Figure 11 is the schematic front view that the present invention forms the intrafascicular fin straight tube after treatment of described fin straight tube.
Figure 12 is that schematic diagram is looked on the left side that the present invention forms the intrafascicular fin straight tube after treatment of described fin straight tube.
Figure 13 is the schematic front view that the present invention to form in described a plurality of close-packed arrays fin straight tube fin straight tube after treatment.
Figure 14 is that schematic diagram is looked on a left side for the fin straight tube that the present invention to form in described a plurality of close-packed arrays fin straight tube after treatment.
Figure 15 is the right TV structure schematic diagram with the pressure fin straight pipe condensation Heat supply and heat exchange device of two air preheaters in another embodiment of the present invention.
Figure 16 is the right TV structure schematic diagram that the present invention goes back with the pressure fin straight pipe condensation Heat supply and heat exchange device of three air preheaters in an embodiment.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and it only for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Fig. 1 ~ Figure 16, comprising: front jellyfish pipe 1, front apron 2, housing 3, fin straight tube bundle 4, outer deflector 5, burner 6, inner deflector 7, a plurality of close-packed arrays fin straight tube 8, rear jellyfish pipe 9, backboard 10, air preheater 11, exhaust opening 12, delivery port 13, water inlet 14, smoke discharging pipe 15, condensation-water drain 16, air intlet 17, dividing plate 18.
The pressure fin straight pipe condensation Heat supply and heat exchange device of one embodiment of the invention is described with reference to figure 1 ~ Fig. 3.As shown in Figure 1, Figure 2 and Figure 3, a kind of pressure fin straight pipe condensation Heat supply and heat exchange device, comprise housing 3, burner 6 and fin straight tube bundle 4 and a plurality of close-packed arrays fin straight tube 8, the side shell of described housing 3 is welded into oval side shell by two " U " shape plates respectively, described oval side is provided with front apron 2 and backboard 10 inside shell two ends, and oval side shell and front apron 2 and backboard 10 are welded and fixed.In one embodiment, described front apron 2 and backboard 10 all adopt insulation material to make.
As shown in FIG., the outside of front apron 2 is provided with front jellyfish pipe 1; The outside of backboard 10 is provided with rear jellyfish pipe 9, with delivery port 13 and water inlet 14 on heat exchanger shell 3.Housing 3 is also provided with exhaust opening 12, and described exhaust opening 12 is tubing type exhaust opening, and its upper end is exhaust opening 12, and its lower end is condensation-water drain 16, and middle part is the air intlet 17 of air preheater 11.
As shown in Figure 4, Fig. 4 is the structure cross-sectional schematic of forcing fin straight pipe condensation Heat supply and heat exchange device in one embodiment of the invention.In this embodiment, this pressure fin straight pipe condensation Heat supply and heat exchange device, it comprises housing 3, be arranged at the burner 6 in housing 3 and a plurality of fin straight tube, housing 3 is provided with water inlet 14, delivery port 13 and exhaust opening 12, burner 6 is connected with air and gas inlet device, described burner 6 is positioned at housing 3 top, one group of fin straight tube bundle 4 by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner 6, fin straight tube bundle 4 and a plurality of close-packed arrays fin straight tube 8 two ends are all fixed between front apron 2 and backboard 10, and the same jellyfish pipe 1 and rear jellyfish pipe 9 are welded and fixed.The arranged outside of the fin straight tube bundle 4 be made up of a plurality of fin straight tube close-packed arrays around described burner 6 has outer deflector 5.Be provided with the smoke discharging pipe 15 be made up of housing 3 and a plurality of close-packed arrays fin straight tube 8 below burner 6, smoke discharging pipe 15 is emptying by exhaust opening 12; The inner side forming the fin straight tube of smoke discharging pipe 15 below described burner 6 is provided with inner deflector 7.
Described fin straight tube two ends are respectively front jellyfish pipe 1 and rear jellyfish pipe 9, and be provided with dividing plate 18 in rear jellyfish pipe 9, rear jellyfish pipe 9 is divided into inlet area and outlet area by dividing plate 18.
Now, if the fin straight tube of described circumference uniform distribution is identical with the diameter of the fin straight tube forming smoke discharging pipe 15, so, the quantity of the fin straight tube of this inlet area is equal with the quantity of the fin straight tube of outlet area.
If the fin straight tube of described circumference uniform distribution is not identical with the diameter of the fin straight tube forming smoke discharging pipe 15, then, the sectional area sum of the fin straight tube of described inlet area is equal with the sectional area sum of the fin straight tube of outlet area.
One or more cuboid or columniform air preheater 11 is provided with in described smoke discharging pipe 15; Described air preheater 11 is connected with air inlet device through smoke discharging pipe 15; Described exhaust opening 12 is tubing type exhaust opening, and its upper end is exhaust opening 12, and its lower end is condensation-water drain 16, and middle part is the air intlet 17 of air preheater 11.
As shown in Figure 5, Fig. 5 is the operation principle schematic diagram forcing fin straight pipe condensation Heat supply and heat exchange device in one embodiment of the invention.Fundamental diagram can be recognized clearly thus, and fin straight tube bundle 4 is positioned at the top of a plurality of close-packed arrays fin straight tube 8, and fin straight tube bundle 4 and a plurality of close-packed arrays fin straight tube 8 parallel.Described burner 6 is coaxially installed in fin straight tube bundle 4, and burner 6 is connected with air and gas inlet device.The smoke discharging pipe 15 be made up of housing 3 and a plurality of close-packed arrays fin straight tube 8 is provided with below burner 6.
The present invention adopts secondary heat exchange mode, and adopt counter-flow arrangement heat exchange, high-temperature flue gas is from top to bottom through fin straight tube bundle 4, a plurality of close-packed arrays fin straight tube 8; And water (flow) direction is just in time contrary, first through a plurality of close-packed arrays fin straight tube 8, then through fin straight tube bundle 4.Air preheater 11 is arranged in smoke discharging pipe 15, can carry out heat exchange with flue gas, improves the air themperature entering burner hearth thus and reduces exhaust gas temperature further simultaneously.
In this embodiment, water inlet 14, front jellyfish pipe 1, fin straight tube, rear jellyfish pipe 9, delivery port 13, form the loop of water heating process.
Current enter the described fraction fin straight tube of fin straight tube bundle 4 and the fin straight tube of described smoke discharging pipe 15 by inlet area, jellyfish pipe 1 before arriving, then current enter the outlet area of rear jellyfish pipe 9 again by another part fin straight tube of described fin straight tube bundle 4.Arrange dividing plate, the part straight tube of " rationally using " circumference uniform distribution fin straight tube bundle, as water inlet pipe, just can adopt the fin straight tube of unified specification, reduces parts kind.Certainly, the part water pipe of circumference uniform distribution fin straight tube bundle also can not be used, but now may to the diameter, layout etc. of the volume of whole equipment, fin straight tube, the thermal efficiency etc., all have a negative impact.
As shown in Figure 6, Fig. 6 is that schematic diagram is looked on the operation principle right side of pressure fin straight pipe condensation Heat supply and heat exchange device with an air preheater in one embodiment of the invention.In this embodiment, described smoke discharging pipe 15 is made up of the lower part of housing 3 and a plurality of close-packed arrays fin straight tube 8, is provided with the air preheater 11 of a rectangular shape in it; In this embodiment, the fin straight tube of inlet area includes all fin straight tubes of a plurality of close-packed arrays fin straight tube 8 described in the fraction fin straight tube of composition fin straight tube bundle 4 and composition; And outlet area comprises most of fin straight tube of the remainder of composition fin straight tube bundle 4, now, if the fin straight tube of described circumference uniform distribution is identical with the diameter of the fin straight tube forming smoke discharging pipe 15, the quantity of the fin straight tube of this inlet area is equal with the quantity of the fin straight tube of outlet area.
As shown in Figure 7, Figure 8, Fig. 7, Fig. 8 be respectively A of the present invention to B to enlarged diagram.Known in Fig. 7, outer deflector 5 is installed on the periphery of fin straight tube bundle 4, and outer deflector 5 is welded on described fin straight tube bundle 4.Outer deflector 5 for cross section be " V " type strip deflector with radian, fit with outside fin straight tube, the adjacent of compact arranged fin straight tube and the flow-guiding mouth of outer deflector 5 stagger mutually.
As shown in Figure 8, the inner side of the fin straight tube of composition smoke discharging pipe 15 is provided with inner deflector 7, described inner deflector 7 for cross section be " V " type strip deflector with radian, fit with fin straight tube, the adjacent of compact arranged fin straight tube and the flow-guiding mouth of inner deflector 7 stagger mutually.
Described outer deflector 5 and inner deflector 7 all serve the effect of water conservancy diversion guiding to flue gas.
As shown in Figure 9, Figure 10, Fig. 9, Figure 10 are all the cross-sectional schematic of pressure fin straight pipe condensation Heat supply and heat exchange device when another embodiment of the present invention burner is positioned at bottom.In this embodiment, burner 6 is positioned at housing 3 bottom, one group of fin straight tube bundle 4 by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner 6, be provided with the smoke discharging pipe 15 be made up of housing 3 and a plurality of close-packed arrays fin straight tube 8 above burner 6, smoke discharging pipe 15 is emptying by exhaust opening 12; Described fin straight tube two ends are respectively front jellyfish pipe 1 and rear jellyfish pipe 9, and be provided with dividing plate 18 in rear jellyfish pipe 9, rear jellyfish pipe 9 is divided into inlet area and outlet area by dividing plate 18; Current enter the described fraction fin straight tube of fin straight tube bundle 4 and the fin straight tube of described smoke discharging pipe 15 by inlet area, jellyfish pipe 1 before arriving, then current enter the outlet area of rear jellyfish pipe 9 again by another part fin straight tube of described fin straight tube bundle 4.
High-temperature flue gas is then from the bottom to top through fin straight tube bundle 4, a plurality of close-packed arrays fin straight tube 8, and air preheater 11 is arranged in smoke discharging pipe 15, can carry out heat exchange with flue gas.
As is illustrated by figs. 11 and 12, Figure 11 is the schematic front view that the present invention forms the intrafascicular fin straight tube after treatment of described fin straight tube, Figure 12 is that schematic diagram is looked on the left side that the present invention forms the intrafascicular fin straight tube after treatment of described fin straight tube, fin adjacent for described compact arranged fin straight tube is carried out bending or extrusion process by the present invention, makes fin along the axial infolding at an angle of straight tube.And in this embodiment, the direction of this fin infolding and angle according to the needs of fin straight tube circumferential arrangement, suitably can adjust angle.See Figure 11 and Figure 13, the fin infolding at an angle of finned tube both sides, two the infolding faces formed can be parallel, also can present certain angle, are at an angle can be arranged in circumferential shapes or other shapes for the ease of a plurality of finned tube.
See Fig. 6, the fin straight tube through processing is arranged in the fin straight tube bundle 4 of tight circumference uniform distribution.Certainly, according to the situation of concrete actual production, cutting or the processing mode such as extruding also can be taked, the distance between the light pipe reducing adjacent fins straight tube.
As shown in Figure 13 and Figure 14, Figure 13 is the schematic front view that the present invention to form in described a plurality of close-packed arrays fin straight tube fin straight tube after treatment, Figure 14 is that schematic diagram is looked on a left side for the fin straight tube that the present invention to form in described a plurality of close-packed arrays fin straight tube after treatment, fin adjacent for described compact arranged fin straight tube is carried out bending or extrusion process by the present invention, make fin along the axial infolding at an angle of straight tube, and in this embodiment, this fin infolding is right angle with the crossing angle of fin straight tube axis direction, namely the infolding direction of fin and fin straight tube axis direction perpendicular.See Fig. 6, the fin straight tube through processing is arranged in a plurality of close-packed arrays fin straight tube 8, and described a plurality of close-packed arrays fin straight tube 8 is an in line shape.
As shown in figure 15, Figure 15 is the right TV structure schematic diagram with the pressure fin straight pipe condensation Heat supply and heat exchange device of two air preheaters in another embodiment of the present invention.In this embodiment, burner 6 is positioned at housing 3 top, one group of fin straight tube bundle 4 by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner 6, be provided with the smoke discharging pipe 15 be made up of housing 3 and a plurality of close-packed arrays fin straight tube 8 below burner 6, smoke discharging pipe 15 is emptying by exhaust opening 12; The air preheater 11 of two cuboids is provided with in described smoke discharging pipe 15; Described air preheater 11 is connected with air inlet device through smoke discharging pipe 15; Described fin straight tube two ends are respectively front jellyfish pipe 1 and rear jellyfish pipe 9, and be provided with dividing plate 18 in rear jellyfish pipe 9, rear jellyfish pipe 9 is divided into inlet area and outlet area by dividing plate 18; Current enter the described fraction fin straight tube of fin straight tube bundle 4 and the fin straight tube of described smoke discharging pipe 15 by inlet area, jellyfish pipe 1 before arriving, then current enter the outlet area of rear jellyfish pipe 9 again by another part fin straight tube of described fin straight tube bundle 4.
Figure 16 is the right TV structure schematic diagram that the present invention goes back with the pressure fin straight pipe condensation Heat supply and heat exchange device of three air preheaters in an embodiment.In this embodiment, burner 6 is positioned at housing 3 top, one group of fin straight tube bundle 4 by the tight circumference uniform distribution of a plurality of fin straight tubes is coaxially installed with around burner 6, be provided with the smoke discharging pipe 15 be made up of housing 3 and a plurality of close-packed arrays fin straight tube 8 below burner 6, smoke discharging pipe 15 is emptying by exhaust opening 12; The air preheater 11 of three cuboids is provided with in described smoke discharging pipe 15; Described air preheater 11 is connected with air inlet device through smoke discharging pipe 15.
To sum up, how the present invention improves heat-transfer area structure from research, increases heat exchange area to improve heat exchange efficiency.It adopts infolding fin straight tube as the primary element forcing fin straight pipe condensation Heat supply and heat exchange device, enhances the heat exchange of fume side, also makes whole heat exchanger volume reduce further simultaneously.
By the navigation designing of outer deflector 5 and inner deflector 7, make the flow path of flue gas be close to finned tube, strengthen heat exchange further, obviously improve shell-side fluid velocity flow profile, reduce " dead band " or " short circuit " phenomenon of flue gas stream.And air preheater 11 is combined in heat exchanger by invention dexterously, show by experiment, when reaching less than-20 DEG C at winter makes outdoor air, reducing exhaust gas temperature further while of utilizing fume afterheat to improve the air themperature entering burner hearth, making efficiency reach more than 98%.
Meanwhile, the present invention, to key components and parts modularized design, is easy to mass production, reduces the production difficulty of heat exchanger, saves production cost.
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. force fin straight pipe condensation Heat supply and heat exchange device for one kind, comprise housing (3), be arranged at the burner (6) in housing (3) and a plurality of fin straight tube, housing (3) is provided with water inlet (14), delivery port (13) and exhaust opening (12), burner (6) is connected with air and gas inlet device, it is characterized in that: burner (6) is positioned at housing (3) top, burner (6) is around coaxially installed with one group of fin straight tube bundle (4) by the tight circumference uniform distribution of a plurality of fin straight tubes, burner (6) below is provided with the smoke discharging pipe (15) be made up of housing (3) and a plurality of close-packed arrays fin straight tube (8), smoke discharging pipe (15) is emptying by exhaust opening (12), described fin straight tube two ends are respectively front jellyfish pipe (1) and rear jellyfish pipe (9), be provided with dividing plate (18) in rear jellyfish pipe (9), rear jellyfish pipe (9) is divided into inlet area and outlet area by dividing plate (18), current enter a part of fin straight tube by inlet area, jellyfish pipe (1) before arriving, and then current enter the outlet area of rear jellyfish pipe (9) again by another part fin straight tube,
The arranged outside of the fin straight tube bundle (4) that described burner (6) is around made up of a plurality of fin straight tube close-packed arrays has outer deflector (5);
Described outer deflector (5) is " V " type strip deflector with radian for cross section, fits with outside fin straight tube, and the adjacent of compact arranged fin straight tube and the flow-guiding mouth of outer deflector (5) stagger mutually.
2. pressure fin straight pipe condensation Heat supply and heat exchange device according to claim 1, it is characterized in that: be provided with dividing plate (18) in described rear jellyfish pipe (9), rear jellyfish pipe (9) is divided into inlet area and outlet area by dividing plate (18); Current enter the fraction fin straight tube of described fin straight tube bundle (4) and the fin straight tube of described smoke discharging pipe (15) by inlet area, jellyfish pipe (1) before arriving, then current enter the outlet area of rear jellyfish pipe (9) again by another part fin straight tube of described fin straight tube bundle (4).
3. pressure fin straight pipe condensation Heat supply and heat exchange device according to claim 1, it is characterized in that: be provided with dividing plate (18) in described rear jellyfish pipe (9), rear jellyfish pipe (9) is divided into inlet area and outlet area by dividing plate (18); The fin straight tube of described circumference uniform distribution is identical with the diameter of the fin straight tube forming smoke discharging pipe (15), and the quantity of the fin straight tube of described inlet area is equal with the quantity of the fin straight tube of outlet area; Or the fin straight tube of described circumference uniform distribution is not identical with the diameter of the fin straight tube forming smoke discharging pipe (15), the sectional area sum of the fin straight tube of described inlet area is equal with the sectional area sum of the fin straight tube of outlet area.
4. the pressure fin straight pipe condensation Heat supply and heat exchange device according to claim arbitrary in claims 1 to 3, it is characterized in that: the fin adjacent to described compact arranged fin straight tube carries out bending or extrusion process, finned tube both sides fin infolding at an angle, two infolding faces that finned tube is formed are parallel or present certain angle.
5. the pressure fin straight pipe condensation Heat supply and heat exchange device according to claim arbitrary in claims 1 to 3, it is characterized in that: the inner side of the fin straight tube of described burner (6) below composition smoke discharging pipe (15) is provided with inner deflector (7), described inner deflector (7) for cross section be " V " type strip deflector with radian, fit with fin straight tube, the adjacent of compact arranged fin straight tube and the flow-guiding mouth of inner deflector (7) stagger mutually.
6. the pressure fin straight pipe condensation Heat supply and heat exchange device according to claim arbitrary in claims 1 to 3, is characterized in that: be provided with air preheater (11) in described smoke discharging pipe (15); Described air preheater (11) is connected with air inlet device through smoke discharging pipe (15); Described exhaust opening (12) is tubing type exhaust opening (12), its upper end is exhaust opening (12), its lower end is condensation-water drain (16), and middle part is the air intlet (17) of air preheater (11).
7. pressure fin straight pipe condensation Heat supply and heat exchange device according to claim 6, is characterized in that: the air preheater (11) in described smoke discharging pipe (15) is one or more cuboid or cylindrical air air inlet pipe.
8. pressure fin straight pipe condensation Heat supply and heat exchange device according to claim 1, it is characterized in that: burner (6) is positioned at housing (3) bottom, burner (6) is around coaxially installed with one group of fin straight tube bundle (4) by the tight circumference uniform distribution of a plurality of fin straight tubes, burner (6) top is provided with the smoke discharging pipe (15) be made up of housing (3) and a plurality of close-packed arrays fin straight tube (8), and smoke discharging pipe (15) is emptying by exhaust opening (12); Described fin straight tube two ends are respectively front jellyfish pipe (1) and rear jellyfish pipe (9), be provided with dividing plate (18) in rear jellyfish pipe (9), rear jellyfish pipe (9) is divided into inlet area and outlet area by dividing plate (18); Current enter the fraction fin straight tube of described fin straight tube bundle (4) and the fin straight tube of described smoke discharging pipe (15) by inlet area, jellyfish pipe (1) before arriving, then current enter the outlet area of rear jellyfish pipe (9) again by another part fin straight tube of described fin straight tube bundle (4).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353552.1A CN102901221B (en) | 2012-09-21 | 2012-09-21 | A kind of pressure fin straight pipe condensation Heat supply and heat exchange device |
| PCT/CN2013/083871 WO2014044203A1 (en) | 2012-09-21 | 2013-09-21 | Forced finned straight pipe condensation heat-supplying heat exchanger |
| US14/356,533 US20150300687A1 (en) | 2012-09-21 | 2013-09-21 | A Straight Fin Tube with Bended Fins Condensing Heat Exchanger |
| US15/787,060 US10288315B2 (en) | 2012-09-21 | 2017-10-18 | Straight fin tube with bended fins condensing heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353552.1A CN102901221B (en) | 2012-09-21 | 2012-09-21 | A kind of pressure fin straight pipe condensation Heat supply and heat exchange device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102901221A CN102901221A (en) | 2013-01-30 |
| CN102901221B true CN102901221B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210353552.1A Active CN102901221B (en) | 2012-09-21 | 2012-09-21 | A kind of pressure fin straight pipe condensation Heat supply and heat exchange device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20150300687A1 (en) |
| CN (1) | CN102901221B (en) |
| WO (1) | WO2014044203A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901221B (en) * | 2012-09-21 | 2015-12-23 | 苏州成强能源科技有限公司 | A kind of pressure fin straight pipe condensation Heat supply and heat exchange device |
| CN102901222B (en) * | 2012-09-21 | 2016-04-20 | 苏州成强能源科技有限公司 | A kind of pressure fin straight tube double-ring condensation Heat supply and heat exchange device |
| US20190078772A1 (en) * | 2015-11-20 | 2019-03-14 | Laars Heating Stystems Company | Heat exchanger for heating water |
| US10458677B2 (en) * | 2015-12-11 | 2019-10-29 | Lochinvar, Llc | Heat exchanger with dual concentric tube rings |
| FR3047063B1 (en) * | 2016-01-22 | 2018-11-30 | Sermeta | THERMAL EXCHANGING DEVICE FOR CONDENSED HEAT EXCHANGER |
| KR101863161B1 (en) * | 2016-08-10 | 2018-06-04 | 한국에너지기술연구원 | Heater for both air heating and hot water supplying |
| CN107940979B (en) * | 2017-12-21 | 2023-05-19 | 吉林大学 | Drying hot blast stove equipment and control method thereof |
| CN108413614A (en) * | 2018-05-10 | 2018-08-17 | 宁波市哈雷换热设备有限公司 | Full pre-mix condensing heat-exchanger rig |
| EP4375610A3 (en) | 2018-06-05 | 2024-07-10 | Kyungdong Navien Co., Ltd. | Heat exchanger unit and condensing boiler using same |
| CN109667672A (en) * | 2018-12-06 | 2019-04-23 | 芜湖市努尔航空信息科技有限公司 | A kind of aero-engine cooling down management system |
| CN109631037B (en) * | 2019-01-17 | 2023-11-24 | 扬州斯大锅炉有限公司 | Air-cooled full-premix planar ultralow nitrogen burner |
| CN109631610A (en) * | 2019-02-22 | 2019-04-16 | 隆华科技集团（洛阳）股份有限公司 | A kind of compound heat-exchanging tube bundle of concurrent-countercurrent |
| CN109974303B (en) * | 2019-04-16 | 2024-04-26 | 廊坊一萍锅炉保养工程有限公司 | Energy-saving device for gas-fired hot water boiler |
| CN110017599B (en) * | 2019-05-10 | 2024-01-23 | 四川省机械研究设计院(集团)有限公司 | Dual-energy water heater capable of rapidly supplying heat |
| WO2021057677A1 (en) * | 2019-09-23 | 2021-04-01 | 苏州威博特能源环保科技有限公司 | Condensing boiler |
| CN110631261B (en) * | 2019-10-14 | 2024-05-31 | 西安交通大学 | Tubular gas condensing boiler and system |
| CN110925729A (en) * | 2019-12-31 | 2020-03-27 | 浙江惠厨节能科技有限公司 | Gas steam engine heat exchanger combining fin plate structure and flat tube structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20150300687A1 (en) | 2015-10-22 |
| CN102901221A (en) | 2013-01-30 |
| WO2014044203A1 (en) | 2014-03-27 |
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Address after: Xing Pu Road Industrial Park in Suzhou city of Jiangsu Province, No. 128 building D 215000 Applicant after: SUZHOU C&Q ENERGY TECH Co.,Ltd. Address before: 215021, Suzhou Industrial Park, Jiangsu Province, only 9 new road, only ting industrial square A District No. 1 Applicant before: SUZHOU CQ HEAT EXCHANGER Co.,Ltd. |
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| GR01 | Patent grant | ||
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| IP01 | Partial invalidation of patent right |
Commission number: 4W112876 Conclusion of examination: Declare claims 1-3 and 5-8 of invention patent right 201210353552.1 invalid and remain valid on the basis of claim 4 Decision date of declaring invalidation: 20220302 Decision number of declaring invalidation: 54327 Denomination of invention: A Forced Finned Straight Tube Condensing Heat Exchanger Granted publication date: 20151223 Patentee: SUZHOU C&Q ENERGY TECH Co.,Ltd. |