CN101561230A - Secondary heat exchanger used for gas water heater - Google Patents
Secondary heat exchanger used for gas water heater Download PDFInfo
- Publication number
- CN101561230A CN101561230A CNA2009103026695A CN200910302669A CN101561230A CN 101561230 A CN101561230 A CN 101561230A CN A2009103026695 A CNA2009103026695 A CN A2009103026695A CN 200910302669 A CN200910302669 A CN 200910302669A CN 101561230 A CN101561230 A CN 101561230A
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- CN
- China
- Prior art keywords
- heat exchanger
- wind deflector
- secondary heat
- exchanging pipe
- water heater
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a secondary heat exchanger used for a gas water heater. The invention discloses a high chrome-nickel alloy casting and a production process thereof. The casting comprises the following components by weight percentage: 3.00-3.40 of carbon, 9.50-10.50 of chrome, 0.5-1.00 of manganese, 1.40-1.80 of silicon, 0.50-0.55 of molybdenum, 5.00-5.50 of nickel, 0.10-0.13 of vanadium, 0.10-0.15 of rare earths, less than or equal to 0.04 of phosphor, less than or equal to 0.004 of sulfur and the balance of iron and impurities. The secondary heat exchanger has two heat treatment processes; the temperature of the first heat treatment is 400-950 DEG C and the time is 40 hours; the tempering temperature for the secondary heat treatment is 200-350 DEG C and the time is 9 hours. By adopting the technical proposal, the metal element has stable organization component, the wearability of the product is improved, the internal stress is eliminated, and the performance stability of the product is improved.
Description
Technical field
The present invention relates to a kind of heat exchanger of flue gas condensing formula gas heater.
Background technology
Along with China's rapid development of economy, energy problem becomes increasingly conspicuous, and gas heater Products Development meaning has risen to the new strategy height of energy-saving and emission-reduction.For the non-condensing gas heater,,, also has SO in the flue gas generally all more than 140 ℃ because its exhaust gas temperature is higher
2NO
1Deng sour gas, high-temperature flue gas has directly the discharged significant wastage valuable energy has polluted atmosphere.Condensed type combustion gas water heater adds condensate and heat exchanger in flue, utilize high-temperature flue gas to add hot water, makes the water vapor condensation in the flue gas discharge the latent heat of vaporization thereby reduce flue-gas temperature, has improved the efficient of water heater; SO
2NO
1Be dissolved in the condensed water Deng sour gas, reduced the noxious gas emission pollution.At present, the secondary heat exchanger of domestic general flue gas condensing water heater is to add an oblique gas baffle above the sensible heat heat exchanger, and flue gas is flowed in the condensation interchanger of side perforate along gas baffle.But this mode complex structure, and smoke distribution is even inadequately during heat exchange, causes endothermic effect good inadequately.
Summary of the invention
The objective of the invention is to overcome prior art complex structure and the irregular shortcoming of smoke distribution, providing a kind of can effectively reduce flue-gas temperature, makes the secondary heat exchanger that is used for gas heater of the steam release latent heat of vaporization in the flue gas.
The problem that will solve required for the present invention realizes by the following technical solutions: it comprises shell, condensing heat-exchanging pipe, cooling water inlet, coolant outlet and discharge pipe, described condensing heat-exchanging pipe two ends are connected with coolant outlet with cooling water inlet respectively, condensing heat-exchanging pipe is three fault position distributed architectures, wind deflector that the below of condensing heat-exchanging pipe is provided with that oblique parallel distributes and secondary wind deflector, the air guide hole of wind deflector and secondary wind deflector is last hole flanging, and air guide hole adopts the structure that is dislocatedly distributed up and down.
The said structure that the present invention adopts can not drip on the sensible heat exchanger when there is the condensate liquid drippage secondary wind deflector top, and the hole of dislocation can make enough well-balanced the entering in the condensation interchanger of flue gas; Cooled smoke is discharged from exhaust opening, and flue-gas temperature is reduced near dew point or below the dew point, effectively reduces smoke emissioning pollution, and condensate and heat exchanger makes full use of a large amount of latent heat of flue gas and steam simultaneously, can make the efficient of water heater improve about 12%.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
Figure 1 shows that structural representation of the present invention, arrow is a flue gas flow direction among the figure;
Figure 2 shows that A-A among the figure to diagrammatic sketch, arrow is a flue gas flow direction among the figure.
The specific embodiment
By accompanying drawing as can be known, this secondary heat exchanger that is used for gas heater comprises shell 4, condensing heat-exchanging pipe 3, cooling water inlet, coolant outlet and discharge pipe 5, described condensing heat-exchanging pipe 3 two ends are connected with coolant outlet with cooling water inlet respectively, condensing heat-exchanging pipe 3 is three fault position distributed architectures, wind deflector 1 that the below of condensing heat-exchanging pipe 3 is provided with that oblique parallel distributes and secondary wind deflector 2, the air guide hole of wind deflector 1 and secondary wind deflector 2 is last hole flanging, and air guide hole adopts the structure that is dislocatedly distributed up and down.The secondary wind deflector is in a wind deflector top and is parallel to wind deflector one time, wind deflector and secondary wind deflector are oblique, in the space of condensing heat-exchanging pipe between secondary wind deflector and housing, flue gas can directly enter this space uniformly by the air-guiding hole of wind deflector and secondary deep bead.The condensing heat-exchanging pipe cooling water inlet of condensate and heat exchanger connects running water, the coolant outlet of condensing heat-exchanging pipe is connected with the water inlet of sensible heat heat exchanger, the delivery port of sensible heat heat exchanger is connected with the user hot water tap, the condensing heat-exchanging pipe of condensate and heat exchanger can make the thermal efficiency of water heater improve about 12% by making full use of a large amount of latent heat in flue gas and the steam like this.The recovery mouth that the condensed water that forms in condensate and heat exchanger can converge to condensate liquid along the inclined-plane of wind deflector and secondary wind deflector reclaims.The material of condensing heat-exchanging pipe, wind deflector, housing and discharge pipe all can adopt corrosion resistant stainless steel among the present invention, and overall corrosion resistance is very strong.
Claims (1)
1. secondary heat exchanger that is used for gas heater, comprise shell, condensing heat-exchanging pipe, cooling water inlet, coolant outlet and discharge pipe, described condensing heat-exchanging pipe two ends are connected with coolant outlet with cooling water inlet respectively, condensing heat-exchanging pipe is three fault position distributed architectures, it is characterized in that: wind deflector that the below of condensing heat-exchanging pipe is provided with that oblique parallel distributes and secondary wind deflector, the air guide hole of wind deflector and secondary wind deflector is last hole flanging, and air guide hole adopts the structure that is dislocatedly distributed up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103026695A CN101561230A (en) | 2009-05-27 | 2009-05-27 | Secondary heat exchanger used for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103026695A CN101561230A (en) | 2009-05-27 | 2009-05-27 | Secondary heat exchanger used for gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101561230A true CN101561230A (en) | 2009-10-21 |
Family
ID=41220133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009103026695A Pending CN101561230A (en) | 2009-05-27 | 2009-05-27 | Secondary heat exchanger used for gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101561230A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104195A (en) * | 1985-06-01 | 1986-11-26 | 阿马特乔恩桑有限公司 | Heat exchanger |
| JPH0355490A (en) * | 1989-07-21 | 1991-03-11 | Nippondenso Co Ltd | Heat exchanger |
| JP2001066083A (en) * | 1993-11-08 | 2001-03-16 | Sharp Corp | Heat exchanger |
| CN101191658A (en) * | 2006-11-20 | 2008-06-04 | 海尔集团公司 | Condensing type constant temperature gas water heater |
| CN201129867Y (en) * | 2007-11-15 | 2008-10-08 | 樱花卫厨（中国）有限公司 | Flue gas condensing type gas water heater |
-
2009
- 2009-05-27 CN CNA2009103026695A patent/CN101561230A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104195A (en) * | 1985-06-01 | 1986-11-26 | 阿马特乔恩桑有限公司 | Heat exchanger |
| JPH0355490A (en) * | 1989-07-21 | 1991-03-11 | Nippondenso Co Ltd | Heat exchanger |
| JP2001066083A (en) * | 1993-11-08 | 2001-03-16 | Sharp Corp | Heat exchanger |
| CN101191658A (en) * | 2006-11-20 | 2008-06-04 | 海尔集团公司 | Condensing type constant temperature gas water heater |
| CN201129867Y (en) * | 2007-11-15 | 2008-10-08 | 樱花卫厨（中国）有限公司 | Flue gas condensing type gas water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091021 |