CN104006699A - Condensation type heat exchange plate and condensation type heat exchanger with same - Google Patents

Condensation type heat exchange plate and condensation type heat exchanger with same Download PDF

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Publication number
CN104006699A
CN104006699A CN201410267087.9A CN201410267087A CN104006699A CN 104006699 A CN104006699 A CN 104006699A CN 201410267087 A CN201410267087 A CN 201410267087A CN 104006699 A CN104006699 A CN 104006699A
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China
Prior art keywords
heat exchange
exchange plate
water
heat exchanger
communicated
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Pending
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CN201410267087.9A
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Chinese (zh)
Inventor
李德忠
何娜萍
刘志强
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Central South University
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Central South University
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Priority to CN201410267087.9A priority Critical patent/CN104006699A/en
Publication of CN104006699A publication Critical patent/CN104006699A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a condensation type heat exchange plate and a condensation type heat exchanger with the condensation type heat exchange plate. The interior of the heat exchange plate is divided into a plurality of arc-shaped water flowing channels which are parallel to one another, pipe connecting ports which are connected with a water inlet pipe and a water outlet pipe respectively are formed in the upper end and the lower end of the interior of the heat exchange plate respectively, water holes are formed in the positions of the pipe connecting ports, the two ends, communicated with the water holes, of an inner cavity of the heat exchange plate are provided with water collecting spaces respectively, the water collecting spaces are communicated with all the water flowing channels, and fins are arranged on the two outer sides of the heat exchange plate respectively. The condensation type heat exchanger is formed by combining a plurality of heat exchange plates in parallel, a smoke pipeline of the condensation type heat exchanger is an inter-plate gap defined by the ribs outside every two adjacent heat exchange plates, the water flowing channels inside the heat exchange plates serve as water flowing pipelines of the condensation type heat exchanger, and the space defined by down pipes on the bottoms of the heat exchange plates serves as a combustion chamber. The condensation type heat exchange plate is made of cast aluminum alloy through die casting and has the advantages that the heat resistance is high, the sealing performance is high, and the balance among the corrosion resistance, the good head conductivity and the manufacturing technology is well considered, heat loss is effectively reduced, and heat exchange efficiency is improved.

Description

The condensing heat exchanger of condensing heat exchange plate and application thereof
Technical field
The invention belongs to condensing heat-exchange technical field, be specifically related to the condensing heat exchanger of a kind of condensing heat exchange plate and application thereof.
Background technology
The exhaust gas temperature of tradition wall-hung boiler is generally 180 DEG C of left and right, wherein contain a large amount of steam, as further reduction exhaust gas temperature and the steam heat of condensation is recycled, the thermal efficiency of wall-hung boiler will significantly improve, and its thermal efficiency of theoretical proof can be up to 111% (taking low heat valve as benchmark).Therefore, condensation technology is applied and is given birth to.Research discovery simultaneously, in the time of flue gas condensing, in flue gas, SOx, NOx almost can be dissolved in condensed water completely, and the harmful substance that makes to enter in atmosphere greatly reduces.As can be seen here, adopt the boiler of condensing type heat-exchanger rig to have very important significance to energy-conserving and environment-protective.
Condensing heat exchanger is mainly divided into copper and the large class of stainless steel two at present, and is mainly in traditional wall-hung boiler, increases a condensing heat exchanger that can make flue gas condensing in the situation that not changing main heat exchanger structure.Though copper heat exchanger good thermal conduction, corrosion stability is poor, cost is higher; Though stainless steel heat exchanger made cost is lower, there is certain corrosion stability, conductivity of heat is poor, welding process requirement is high, and integrated artistic requires strict.Meanwhile, traditional condensing heat exchanger complex structure, manufacture process requirement is high, and condensing heat-exchange DeGrain.
Summary of the invention
The technical problem that the present invention solves is: propose a kind of novel condensing heat exchange plate and the condensing heat exchanger of application thereof, with the problem such as solve in present wall-hung boiler main heat exchanger and condensing heat exchanger condensation rate is not high, resistance to corrosion is poor, poor stability, cost are higher.
The present invention adopts following technical scheme to realize: a kind of condensing heat exchange plate, described heat exchange plate inside is separated to form some parallel arcs by demarcation strip and crosses aquaporin, the inner upper and lower two ends of described heat exchange plate are respectively equipped with the adapter mouth being connected with water inlet pipe and outlet pipe, the described position of taking over mouth is provided with water hole, and the heat exchange plate inner chamber two ends that described water hole is communicated with are respectively arranged with collecting space and are communicated with all aquaporins of crossing; The outside two sides of described heat exchange plate is equipped with fin.
Further, described fin adopts the arc fin identical with described demarcation strip shape, and its position is corresponding one by one with the position of demarcation strip.
Further, the outside two sides of described heat exchange plate is all horizontal a condensate liquid water leg, and the end of described condensate liquid water leg is provided with condensate liquid downcomer.
Further, the two bottom sides of described heat exchange plate is down-comer, and its inside is communicated with collecting space, and the bottom of described down-comer is provided with takes over mouth and water hole.
In the present invention, described heat exchange plate and outside fin and condensate liquid water leg thereof all adopt cast aluminium alloy die casting one-body molded.
The present invention also comprises a kind of condensing heat exchanger being combined side by side by above-mentioned condensing heat exchange plate, the flue gas pipeline of described condensing heat exchanger is gap between the plate that surrounds of the fin of adjacent heat exchanger plates sheet outside, crossing water lines is the aquaporin of crossing of heat exchange plate inside, the space that the down-comer of described heat exchange plate bottom surrounds is combustion chamber, the top of described condensing heat exchanger is provided with water inlet pipe and is communicated with the water hole parallel connection at heat exchange plate top, and bottom is provided with outlet pipe and is communicated with the water hole parallel connection of heat exchange plate bottom.Water from top to bottom circulates in aquaporin excessively in heat exchange plate; High-temperature gas circulates in the plate gap between adjacent heat exchanger plates sheet from bottom to top from combustion chamber, and heat is transmitted to the water in plate, and hot and cold two plume matter reverse circulated form countercurrent flow, and the water absorbing after heat reclaims along down-comer and outlet pipe.
Further, the condensate liquid water leg of described heat exchange plate is interconnected by the condensate liquid discharging tube in parallel with condensate liquid downcomer.High-temperature flue gas flows through heat exchange plate surface temperature to be reduced, and when through heat exchange plate top, steam latent heat feeds water by plate transmission, flue gas devaporation, and the condensed water of formation flow in condensate liquid water leg along fin, and reclaims by condensate liquid discharging tube.
Further, two water inlets of described water inlet pipe connection in parallel are in charge of, and described water inlet is in charge of with the adapter mouth welding at heat exchange plate top and is communicated with.
Further, described outlet pipe is in parallel to be communicated with two water outlets and to be in charge of, and described water outlet is in charge of with the adapter mouth welding of the down-comer bottom of heat exchange plate and is communicated with.
The beneficial effect of patent of the present invention is as follows: (1) heat exchange plate side and demarcation strip and floor adopt arc line shaped, can effectively increase heat exchange stroke, strengthens flue gas disturbance, improves heat exchange efficiency; (2) outside, combustion chamber is surrounded by the down-comer of heat exchange plate, makes the water of its internal circulation fully absorb the heat radiation in combustion chamber; (3) heat exchange plate adopts the one-shot forming of pack alloy manufacturing process, exterior ribs and inner welding, and good heat resistance, sealing is strong; (4) the bottom high temperature section of heat exchange plate flue gas heat exchange and top condensation segment are connected, and can effectively reduce body radiation loss and save space; (5) high-temperature flue gas is having heat convection between the thin space flat board of low fin, and heat exchange amount is large and abundant, makes flue gas rapid condensation, strengthens heat transfer effect; (6) water is crossed aquaporin concurrent flow heat exchange mode in heat exchanger plates, and circulating resistance is little, and heat exchange amount is large, and temperature of cold water rises is rapid.
From the above mentioned, above-mentioned cast aluminium condensing heat exchange plate and condensing heat exchanger that the present invention proposes, can finely take into account the balance between corrosion resistance, good conductivity of heat and manufacturing process, effectively reduced radiation loss.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the condensing heat exchanger in the present invention.
Fig. 2 is that water lines schematic diagram is crossed in the inside of the condensing heat exchanger in the present invention.
Fig. 3 is the side view of the condensing heat exchanger in the present invention, for the A in Fig. 2 is to schematic cross-section, is the schematic diagram of the water in the present invention, gas countercurrent flow.
Fig. 4 is the schematic perspective view of the condensing heat exchange plate in the present invention.
Fig. 5 is the side view of the condensing heat exchange plate in the present invention, highlights the position of condensate liquid water leg.
Fig. 6 is condensate liquid water leg and the periphery heat exchange plate internal structure schematic diagram thereof in the present invention.
Fig. 7 is the internal view of the collecting space of the heat exchange plate bottom in the present invention.
Number in the figure: 1, water inlet pipe, 2, water inlet is in charge of, 3, condensation discharging tube, 4, heat exchange plate, 5, gap between plate, 6, water outlet is in charge of, 7, combustion chamber, 8, outlet pipe, 9, down-comer, 4-1, condensate liquid water leg, 4-2, mistake aquaporin, 4-3, demarcation strip, 4-4, fin, 4-5, adapter mouthful, 4-6, water hole, 4-7, condensate liquid downcomer, 4-8, collecting space.
Detailed description of the invention
Embodiment 1
Arrive Fig. 7 referring to Fig. 4, the some parallel arc that heat exchange plate 4 inside are separated to form by demarcation strip 4-3 is crossed aquaporin-4-2, the inner upper and lower two ends of heat exchange plate 4 are respectively equipped with the adapter mouth 4-5 being connected with water inlet pipe and outlet pipe, the position of taking over mouthful 4-5 is provided with water hole 4-6, and the heat exchange plate inner chamber two ends that water hole 4-6 is communicated with are respectively arranged with collecting space 4-8 and are communicated with all aquaporins of crossing; The outside two sides of heat exchange plate 4 is equipped with fin 4-4.
Specifically, referring to Fig. 4, fin 4-4 adopts the arc fin identical with the demarcation strip 4-3 shape of heat exchange plate inside, and its position is corresponding one by one with the position of demarcation strip.
Referring to Fig. 4 to Fig. 6, the outside two sides of heat exchange plate 4 is all horizontal a condensate liquid water leg 4-1, and the end of condensate liquid water leg 4-1 is provided with condensate liquid downcomer 4-7.
Referring to Fig. 4 and Fig. 7, the two bottom sides of heat exchange plate 4 is down-comer 9, and its inside is communicated with collecting space 4-8, and the bottom of down-comer 9 is provided with takes over mouthful 4-5 and water hole 4-6.
Heat exchange plate and outside fin and condensate liquid water leg thereof all adopt cast aluminium alloy die casting one-body molded.
Embodiment 2
In conjunction with referring to Fig. 1 to Fig. 3, a kind of condensing heat exchanger being combined side by side by the condensing heat exchange plate in embodiment 1, the flue gas pipeline of condensing heat exchanger is gap 5 between the plate that surrounds of the fin 4-4 of adjacent heat exchanger plates sheet 4 outsides, crossing water lines is aquaporin-4-2 excessively of heat exchange plate 4 inside, between adjacent heat exchanger plates sheet 4, leave certain interval, whole heat exchanger both sides adopt the sealing of aluminium skin, form exhaust gases passes upwards.The space that the down-comer 9 of heat exchange plate 4 bottoms surrounds is combustion chamber 7, and the top of condensing heat exchanger is provided with water inlet pipe 1 and is communicated with the water hole parallel connection at heat exchange plate 4 tops, and bottom is provided with outlet pipe 8 and is communicated with the water hole parallel connection of heat exchange plate bottom.Two water inlets of water inlet pipe 7 connections in parallel are in charge of 2, and water inlet is in charge of 2 and is communicated with the adapter mouth welding at heat exchange plate 4 tops.Outlet pipe 8 is in parallel to be communicated with two water outlets and to be in charge of 6, and water outlet is in charge of 6 and is welded and be communicated with the adapter mouth of down-comer 9 bottoms of heat exchange plate 4.Condensate liquid water leg 4-1 on heat exchange plate 4 is interconnected by the condensate liquid discharging tube 3 in parallel with condensate liquid downcomer 4-7, and heat exchanger is embedded in water inlet in the adapter mouth of heat exchange plate to be in charge of with water outlet and to be in charge of and to be connected by welding, compact conformation, firmly.High-temperature flue gas flows through heat exchange plate surface temperature to be reduced, and when through heat exchange plate top, steam latent heat feeds water by plate transmission, flue gas devaporation, and the condensed water of formation flow in condensate liquid water leg along fin, and reclaims by condensate liquid discharging tube.
Water is diverted to into water and is in charge of 2 from water inlet pipe 1 enters, flow into again the aquaporin of crossing in heat exchange plate 4, in heat exchange plate, flow from top to bottom, water collects at heat exchanger plates bottom collecting space 4-8, branch to again both sides down-comer 9, after water inflow water outlet in down-comer is in charge of 6, flow out through outlet pipe 8.In combustion chamber, 7 burnings produce high-temperature flue gas space radiation towards periphery in combustion gas, gap 5 between the plate of the condensing heat exchanger of the bottom-up circulation inflow of flue gas afterwards, as shown in Figure 3, after the water generation strong convection heat exchange of high-temperature flue gas and heat exchange plate, temperature reduces, many the fins that heat exchange plate surface is arranged have further been strengthened heat convection, drop to its dew point through cooling flue gas at heat exchange plate 4 upper temps, there is devaporation, discharge the latent heat of vaporization, condensed flue gas occurs to flow out from heat exchange plate top, condensed water in flue gas flows to condensate liquid water leg 4-1 along the fin of heat exchange plate under Action of Gravity Field, being pooled to afterwards condensation discharging tube 3 discharges, the continuous endothermic temperature of water in whole process heat exchange plate raises.
In whole process, water enters from condensing heat exchanger top left, flows from top to bottom along crossing water lines, flows out from the right side, bottom of condensing heat exchanger; Flue gas enters heat exchange plate gap from burning chamber, and heat is fed water by heat exchange plate transmission, and temperature constantly declines and condensation occurs on top, and condensed flue gas is discharged from heat exchanger top clearance.Two strands of heat exchanging fluid reverse heat-exchanges, heat exchange is abundant, successful.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The present invention can not be restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (9)

1. a condensing heat exchange plate, it is characterized in that: described heat exchange plate inside is separated to form some parallel arcs by demarcation strip and crosses aquaporin, the inner upper and lower two ends of described heat exchange plate are respectively equipped with the adapter mouth being connected with water inlet pipe and outlet pipe, the described position of taking over mouth is provided with water hole, and the heat exchange plate inner chamber two ends that described water hole is communicated with are respectively arranged with collecting space and are communicated with all aquaporins of crossing; Described heat exchange plate outside is provided with fin.
2. a kind of condensing heat exchange plate according to claim 1, is characterized in that: described fin is the arc identical with described demarcation strip shape, and its position is corresponding one by one with the position of demarcation strip.
3. a kind of condensing heat exchange plate according to claim 2, is characterized in that: the outside two sides of described heat exchange plate is all horizontal a condensate liquid water leg, and the end of described condensate liquid water leg is provided with condensate liquid downcomer.
4. a kind of condensing heat exchange plate according to claim 3, is characterized in that: the two bottom sides of described heat exchange plate is down-comer, and its inside is communicated with collecting space, and the bottom of described down-comer is provided with takes over mouth and water hole.
5. a kind of condensing heat exchange plate according to claim 4, is characterized in that: described heat exchange plate and outside fin and condensate liquid water leg thereof all adopt cast aluminium alloy die casting one-body molded.
6. the condensing heat exchanger being combined side by side by the condensing heat exchange plate in some claim 1-5, it is characterized in that: the flue gas pipeline of described condensing heat exchanger is gap between the plate that surrounds of the fin of adjacent heat exchanger plates sheet outside, crossing water lines is the aquaporin of crossing of heat exchange plate inside, the space that the down-comer of described heat exchange plate bottom surrounds is combustion chamber, the top of described condensing heat exchanger is provided with water inlet pipe and is communicated with the water hole parallel connection at heat exchange plate top, and bottom is provided with outlet pipe and is communicated with the water hole parallel connection of heat exchange plate bottom.
7. condensing heat exchanger according to claim 6, is characterized in that: the condensate liquid water leg of described heat exchange plate is interconnected by the condensate liquid discharging tube in parallel with condensate liquid downcomer.
8. condensing heat exchanger according to claim 7, is characterized in that: two water inlets of described water inlet pipe connection in parallel are in charge of, and described water inlet is in charge of with the adapter mouth welding at heat exchange plate top and is communicated with.
9. condensing heat exchanger according to claim 8, is characterized in that: described outlet pipe is in parallel to be communicated with two water outlets and to be in charge of, and described water outlet is in charge of with the adapter mouth welding of the down-comer bottom of heat exchange plate and is communicated with.
CN201410267087.9A 2014-06-16 2014-06-16 Condensation type heat exchange plate and condensation type heat exchanger with same Pending CN104006699A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104482795A (en) * 2014-12-10 2015-04-01 中国航空工业集团公司金城南京机电液压工程研究中心 Heat exchanger core applicable to curved surface layout
CN105552401A (en) * 2016-02-03 2016-05-04 中国东方电气集团有限公司 Fuel cell equipment and fuel cell energy system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008082579A (en) * 2006-09-26 2008-04-10 Kyocera Corp Plate fin type heat exchanger and fuel cell system
CN201680739U (en) * 2010-05-31 2010-12-22 江苏宝得换热设备有限公司 Curved plate-type heat exchanger
CN103245059A (en) * 2012-09-11 2013-08-14 杨斌 Disc combined type heat exchanger
CN103808011A (en) * 2014-02-24 2014-05-21 广东万和新电气股份有限公司 Cast aluminum heat exchange sheet for fuel gas hot water device
CN203928848U (en) * 2014-06-16 2014-11-05 中南大学 The condensing heat exchanger of a kind of condensing heat exchange plate and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008082579A (en) * 2006-09-26 2008-04-10 Kyocera Corp Plate fin type heat exchanger and fuel cell system
CN201680739U (en) * 2010-05-31 2010-12-22 江苏宝得换热设备有限公司 Curved plate-type heat exchanger
CN103245059A (en) * 2012-09-11 2013-08-14 杨斌 Disc combined type heat exchanger
CN103808011A (en) * 2014-02-24 2014-05-21 广东万和新电气股份有限公司 Cast aluminum heat exchange sheet for fuel gas hot water device
CN203928848U (en) * 2014-06-16 2014-11-05 中南大学 The condensing heat exchanger of a kind of condensing heat exchange plate and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104482795A (en) * 2014-12-10 2015-04-01 中国航空工业集团公司金城南京机电液压工程研究中心 Heat exchanger core applicable to curved surface layout
CN105552401A (en) * 2016-02-03 2016-05-04 中国东方电气集团有限公司 Fuel cell equipment and fuel cell energy system

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Application publication date: 20140827

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