CN102494404A - Condensing efficient gas water heater - Google Patents
Condensing efficient gas water heater Download PDFInfo
- Publication number
- CN102494404A CN102494404A CN2011103988404A CN201110398840A CN102494404A CN 102494404 A CN102494404 A CN 102494404A CN 2011103988404 A CN2011103988404 A CN 2011103988404A CN 201110398840 A CN201110398840 A CN 201110398840A CN 102494404 A CN102494404 A CN 102494404A
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- Prior art keywords
- condensation
- insulation layer
- thermal insulation
- water heater
- layer
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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
- 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
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
- F24H1/287—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged in line with the combustion chamber
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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
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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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
- F24H9/0031—Guiding means in combustion gas channels with means for changing or adapting the path of the flue gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- 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)
- Incineration Of Waste (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a condensing efficient gas water heater, which comprises an inner container, a combustor, a smoke exhausting hood, a heat exchange smoke tube, a heat-preserving layer and a shell, wherein the combustor is arranged at the lower side of the inner container; the smoke exhausting hood is arranged at the outer side of the inner container and has a smoke exhausting gap with the inner container; the heat exchange smoke tube longitudinally runs through the inner container; the heat-preserving layer and the shell are coated at the outer side of the smoke exhausting hood; the smoke exhausting hood is provided with a smoke exhausting opening communicated with atmosphere; the smoke exhausting hood particularly comprises a gas distributing hood at a top, a condensing hood positioned at the lower side of the gas distributing hood and further connected with the gas distributing hood, and a reflux hood arranged at the lower part of the heat-preserving layer; a reflux cavity is formed between the reflux hood and the condensing hood; the reflux cavity is respectively communicated with the smoke exhausting opening and a condensing cavity; and the outer wall of the condensing hood is provided with a first heat insulating layer. According to the condensing efficient gas water heater, by arranging the first heat insulating layer on the outer wall of the condensing hood, the first heat insulating layer can be used for reflecting the heat of fume, so that the heat of the fume is not leaked outwards; the first heat insulating layer is verified to be capable of decreasing the temperature at the smoke exhausting opening by 2-5 DEG C; and the heat efficiency is further improved.
Description
Technical field
The present invention relates to the gas heater technical field, particularly a kind of condensation high-efficiency gas water heater.
Background technology
Along with the continuous development of science and technology, the improvement day by day of people's living standard, the demand of hot water in people's daily life increases greatly, and water heater, gas heater are widely used by people, and especially gas displacement type water heater has been come into huge numbers of families gradually.
In the time of common gas water heater working, can give off a large amount of flue gases, temperature is up to 180 ℃; Common water heater can't utilize this part heat, is slatterned in vain, simultaneously; In the process of discharging up to 180 ℃ of high-temperature flue gas; Heat transmission makes fuselage obviously hot, touches with hand, can't on fuselage, stop.And the key of condensation technology is the high-efficiency condensation heat exchanger, and the cold water pipe that advances of water heater is close to condensing heat exchanger, when the high-temperature flue gas of discharging passes through condensing heat exchanger; The overwhelming majority heats heat exchanger that is condensed absorbs, and in order to the cold water in the preheating water inlet pipe, is equivalent to before general gas water heater heating cold water, carry out once heating in advance; It should be noted that the heat in order to preheating cold water is not to obtain through combustion gas, but utilized the heat in the irretrievable flue gas of script, thereby reach energy-saving effect; Have environmental protection concurrently, the flue-gas temperature of so final discharge has only about 60 ℃, when being delivered to fuselage again; Temperature is existing to be reduced; Touch with hand, have only the sensation of temperature slightly, hand can rest on the fuselage fully.But the present gas heater thermal efficiency is told somebody what one's real intentions are.
Therefore, how to improve heat exchange efficiency, become the important technological problems that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of condensation high-efficiency gas water heater, to improve heat exchange efficiency.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of condensation high-efficiency gas water heater; Comprise inner bag, be arranged at the burner of said inner bag downside, heat-insulation layer and the shell that is arranged at the said inner bag outside and has the enclosure in smoke evacuation gap, vertically run through the heat exchange smoke pipe of said inner bag and be coated on the said enclosure outside with said inner bag; Said enclosure has the exhaust opening with atmosphere, and said enclosure specifically comprises:
Be positioned at the branch gas hood at top, form the shunting chamber between the top of said minute gas hood and said inner bag;
Be positioned at said minute gas hood downside, and the condensation cover that is connected with said minute gas hood, forming condensation chamber between the sidewall of said condensation cover and said inner bag, said condensation chamber is connected with said shunting chamber;
Be arranged at the backflow cover of said heat-insulation layer bottom, form back cavity between said backflow cover and the said condensation cover, said back cavity is connected with said exhaust opening and said condensation chamber respectively, and the outer wall of said condensation cover is provided with first thermal insulation layer.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said first thermal insulation layer is heat insulation aluminium foil layer or heat insulation tinfoil paper layer.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said first thermal insulation layer is two-layer at least, and the minute surface of said first thermal insulation layer of internal layer is inboard towards said condensation cover, and the minute surface of outer field said first thermal insulation layer is towards the said condensation cover outside.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said first thermal insulation layer is three layers, and the minute surface of said first thermal insulation layer in intermediate layer is inboard towards said condensation cover.
Preferably, in above-mentioned condensation high-efficiency gas water heater, the inwall of said backflow cover is provided with second thermal insulation layer.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said second thermal insulation layer is heat insulation aluminium foil layer or heat insulation tinfoil paper layer.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said second thermal insulation layer is two-layer at least, and the minute surface of said second thermal insulation layer of internal layer is towards the said backflow cover outside, and the minute surface of outer field said second thermal insulation layer is inboard towards said backflow cover.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said second thermal insulation layer is three layers, and the minute surface of said second thermal insulation layer in intermediate layer is towards the said backflow cover outside.
Preferably, in above-mentioned condensation high-efficiency gas water heater, said first thermal insulation layer (8) is 11-14mm by said exhaust opening place to the cross-sectional width that extends below the said condensation chamber of 300～400mm.
Preferably, in above-mentioned condensation high-efficiency gas water heater, the cross-sectional width of said condensation chamber is 11-14mm, and said exhaust opening is positioned at the middle part or the top of said inner bag.
Can find out from above-mentioned technical scheme; Condensation high-efficiency gas water heater provided by the invention through enclosure being designed to comprise branch gas hood, condensation cover and the cover that refluxes, has slowed down the flow velocity of flue gas; Improve the time of staying of flue gas in the condensation high-efficiency gas water heater, improved the thermal efficiency then.And the present invention is provided with first thermal insulation layer through the outer wall at the condensation cover, and this first thermal insulation layer can be used in the heat of reflection flue gas, makes flue gas heat not leak, and according to checking, first thermal insulation layer can make 2-5 ℃ of exhaust opening temperature decline, has further improved the thermal efficiency.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the condensation high-efficiency gas water heater that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the partial enlarged drawing of I among Fig. 1.
The specific embodiment
The invention discloses a kind of condensation high-efficiency gas water heater, to improve heat exchange efficiency.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 1 and Fig. 2, the structural representation of the condensation high-efficiency gas water heater that Fig. 1 provides for the embodiment of the invention; Fig. 2 is the partial enlarged drawing of I among Fig. 1.
The condensation high-efficiency gas water heater that the embodiment of the invention provides comprises inner bag 9, burner 6, enclosure, heat exchange smoke pipe, heat-insulation layer 10 and shell 11.Wherein, inner bag 9 is used to hold cold water, and burner 6 is arranged at the downside of inner bag 9, is used for the cold water in the inner bag 9 is heated.Enclosure is arranged at the outside of inner bag 9 and has the smoke evacuation gap with inner bag 9, and the flue gas that the heat exchange smoke pipe is discharged is drained by the smoke evacuation gap.The heat exchange smoke pipe vertically runs through inner bag 9, and the top and the bottom of inner bag 9 passed at two ends respectively.Heat-insulation layer 10 and shell 11 are coated on the outside of enclosure, and enclosure has the exhaust opening 4 with atmosphere.
The disclosed enclosure of the foregoing description can specifically comprise branch gas hood 1, condensation cover 2 and the cover 5 that refluxes.Wherein, the shunting chamber is formed between the top of branch gas hood 1 and inner bag 9 on the top of dividing gas hood 1 to be positioned at inner bag 9, and the flue gas that flows out along heat exchange smoke pipe top is shunted by minute gas hood 1, and flows downward along shunting the chamber.Condensation cover 2 is positioned at the downside of branch gas hood 1, and is connected with minute gas hood 1, forms condensation chamber 3 between the sidewall of condensation cover 2 and inner bag 9, and condensation chamber 3 is connected with the shunting chamber.The cover 5 that refluxes is arranged at the bottom of heat-insulation layer 10, and the outer wall of condensation cover 2 is provided with first thermal insulation layer 8, refluxes and forms back cavity 7 between cover 5 and the condensation cover 2, and back cavity 7 is connected with exhaust opening 4 and condensation chamber 3 respectively.The present invention is through being provided with the length long enough that the cover 5 that refluxes can guarantee condensation chamber 3; Improve heat exchange efficiency; Flue gas through after the last heat exchange, forms back cavity 7 through refluxing and upwards flows, until draining through exhaust opening 4 in condensation chamber 3 between cover 5 and the condensation cover 2.
Condensation high-efficiency gas water heater provided by the invention through enclosure being designed to comprise branch gas hood 1, condensation cover 2 and the cover 5 that refluxes, has slowed down the flow velocity of flue gas, has improved the time of staying of flue gas in the condensation high-efficiency gas water heater, has improved the thermal efficiency then.And the present invention is provided with first thermal insulation layer 8 through the outer wall at condensation cover 2; This first thermal insulation layer 8 can be used in the heat of reflection flue gas, makes flue gas heat not leak, according to checking; First thermal insulation layer 8 can make 2-5 ℃ of exhaust opening temperature decline, has further improved the thermal efficiency.
In the present embodiment, common Design of length with first thermal insulation layer 8 is to extending below 300～400mm by said exhaust opening place.
Divide and have the convexity of extending on the gas hood 1 to the heat exchange smoke pipe; Heat energy and high-temperature flue gas that burner 6 discharges at first carry out the heat exchange first time through the bottom of inner bag 9; Carry out the heat exchange second time through the heat exchange smoke pipe then, waste heat through the secondary heat exchange and high-temperature flue gas reverse downwards through minute gas hood 1 after heat exchange smoke pipe upper port is hampered by the convexity of branch gas hood 1; In condensation chamber 3, carry out heat exchange once more with inner bag 9 outer walls; Waste heat and high-temperature flue gas are fully absorbed, and flue-gas temperature is reduced to below the steam dew-point temperature, and will produce certain condensed water this moment.Condensed water will flow to along the inside and outside wall of condensation chamber 3 in the ponding dish of bottom.
In the present embodiment, first thermal insulation layer 8 can be heat insulation aluminium foil layer or heat insulation tinfoil paper layer, and first thermal insulation layer 8 is two-layer at least, and the minute surface of first thermal insulation layer 8 of internal layer is towards condensation cover 2 inboards, and the minute surface of outer field first thermal insulation layer 8 is towards condensation cover 2 outsides.
First thermal insulation layer 8 also can be three layers, and the minute surface of first thermal insulation layer 8 of internal layer is towards condensation cover 2 inboards, and the minute surface of first thermal insulation layer 8 in intermediate layer is towards condensation cover 2 inboards, and the minute surface of outer field first thermal insulation layer 8 is towards condensation cover 2 outsides.
In order further to improve heat exchange efficiency, the inwall of the backflow cover 5 that the embodiment of the invention provides is provided with the second thermal insulation layer (not shown).This second thermal insulation layer and first is can thermal insulation layer 8 identical, can be used in the heat of reflection flue gas equally, makes flue gas heat not leak, and has further improved the thermal efficiency.
In the present embodiment, second thermal insulation layer is heat insulation aluminium foil layer or heat insulation tinfoil paper layer, and second thermal insulation layer is two-layer at least, and the minute surface of second thermal insulation layer of internal layer is towards cover 5 outsides of refluxing, and the minute surface of outer field second thermal insulation layer is towards cover 5 inboards of refluxing.
Second thermal insulation layer also can be three layers, and the minute surface of second thermal insulation layer of internal layer is towards cover 5 outsides of refluxing, and the minute surface of second thermal insulation layer in intermediate layer is towards cover 5 outsides of refluxing, and the minute surface of outer field second thermal insulation layer is towards cover 5 inboards of refluxing.
The cross-sectional width of condensation chamber is 11-14mm, in one embodiment of the present invention, is specially 12mm.Because the present invention has reduced the width of condensation chamber annular space, therefore can make exhaust opening 4 be positioned at the middle part or the top of inner bag 9, can not make flow of flue gas not smooth yet.In the present embodiment, being provided with of exhaust opening 4 highly is 50%～95% of inner bag 9 height.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. condensation high-efficiency gas water heater; Comprise inner bag (9), be arranged at the burner (6) of said inner bag (9) downside, heat-insulation layer (10) and the shell (11) that is arranged at said inner bag (9) outside and has the enclosure in smoke evacuation gap, vertically run through the heat exchange smoke pipe of said inner bag (9) and be coated on the said enclosure outside with said inner bag (9); Said enclosure has the exhaust opening with atmosphere; It is characterized in that said enclosure specifically comprises:
Be positioned at the branch gas hood (1) at top, form the shunting chamber between the top of said minute gas hood (1) and said inner bag (9);
Be positioned at said minute gas hood (1) downside, and with the said minute condensation cover (2) that be connected of gas hood (1), form condensation chamber (3) between the sidewall of said condensation cover (2) and said inner bag (9), said condensation chamber (3) is connected with said shunting chamber;
Be arranged at the backflow cover (5) of said heat-insulation layer (10) bottom; Form back cavity (7) between said backflow cover (5) and the said condensation cover (2); Said back cavity (7) is connected with said exhaust opening and said condensation chamber (3) respectively, and the outer wall of said condensation cover (2) is provided with first thermal insulation layer (8).
2. condensation high-efficiency gas water heater as claimed in claim 1 is characterized in that, said first thermal insulation layer (8) is heat insulation aluminium foil layer or heat insulation tinfoil paper layer.
3. condensation high-efficiency gas water heater as claimed in claim 2; It is characterized in that; Said first thermal insulation layer (8) is two-layer at least; The minute surface of said first thermal insulation layer (8) of internal layer is towards said condensation cover (2) inboard, and the minute surface of outer field said first thermal insulation layer (8) is towards said condensation cover (2) outside.
4. condensation high-efficiency gas water heater as claimed in claim 3 is characterized in that, said first thermal insulation layer (8) is three layers, and the minute surface of said first thermal insulation layer (8) in intermediate layer is towards said condensation cover (2) inboard.
5. like each described condensation high-efficiency gas water heater of claim 1-3, it is characterized in that the inwall of said backflow cover (5) is provided with second thermal insulation layer.
6. condensation high-efficiency gas water heater as claimed in claim 5 is characterized in that, said second thermal insulation layer is heat insulation aluminium foil layer or heat insulation tinfoil paper layer.
7. condensation high-efficiency gas water heater as claimed in claim 6; It is characterized in that; Said second thermal insulation layer is two-layer at least, and the minute surface of said second thermal insulation layer of internal layer is towards said backflow cover (5) outside, and the minute surface of outer field said second thermal insulation layer is towards said backflow cover (5) inboard.
8. condensation high-efficiency gas water heater as claimed in claim 7 is characterized in that, said second thermal insulation layer is three layers, and the minute surface of said second thermal insulation layer in intermediate layer is towards said backflow cover (5) outside.
9. like each described condensation high-efficiency gas water heater of claim 1-3, it is characterized in that, said first thermal insulation layer (8) by said exhaust opening place to extending below 300～400mm.
10. condensation high-efficiency gas water heater as claimed in claim 9 is characterized in that, the cross-sectional width of said condensation chamber is 11-14mm, and said exhaust opening is positioned at the middle part or the top of said inner bag (9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103988404A CN102494404B (en) | 2011-12-05 | 2011-12-05 | Condensing efficient gas water heater |
| PCT/CN2011/083740 WO2013082797A1 (en) | 2011-12-05 | 2011-12-09 | High efficiency condensing gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103988404A CN102494404B (en) | 2011-12-05 | 2011-12-05 | Condensing efficient gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494404A true CN102494404A (en) | 2012-06-13 |
| CN102494404B CN102494404B (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103988404A Active CN102494404B (en) | 2011-12-05 | 2011-12-05 | Condensing efficient gas water heater |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102494404B (en) |
| WO (1) | WO2013082797A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438563A (en) * | 2013-08-31 | 2013-12-11 | 苏州赛斯德工程设备有限公司 | Total encapsulation type gas water heater |
| WO2023124590A1 (en) * | 2021-12-29 | 2023-07-06 | 艾欧史密斯(中国)热水器有限公司 | Condensing heat exchanger and hot water/heating device thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078722Y (en) * | 2007-11-13 | 2008-06-25 | 景洪 | Condensing type high-efficiency gas positive displacement water heater |
| CN201508017U (en) * | 2009-05-18 | 2010-06-16 | 赵庆义 | Improved gas water heater |
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| DE4412714A1 (en) * | 1994-04-13 | 1995-10-19 | Buderus Heiztechnik Gmbh | Water geyser with catalytic burner unit(s) in water chamber |
| US6544618B1 (en) * | 1999-05-06 | 2003-04-08 | Cabot Corporation | Thermally reflective layer-porous metal oxide film insulation composite |
| CN2606302Y (en) * | 2003-01-23 | 2004-03-10 | 艾欧史密斯(中国)热水器有限公司 | Multi exhaust water heater |
| JP4671897B2 (en) * | 2006-03-30 | 2011-04-20 | 日立アプライアンス株式会社 | Vacuum insulation, hot water supply equipment and electric water heater using vacuum insulation |
| CN201116776Y (en) * | 2007-08-17 | 2008-09-17 | 上海海事大学 | Vacuum heat-insulation plate used for water heater |
| CN101149186B (en) * | 2007-11-13 | 2010-05-26 | 景洪 | Condensing type highly effective gas displacement type water heater |
| AU2010239124B2 (en) * | 2009-04-21 | 2014-03-27 | Rheem Australia Pty Limited | Improvements in water heaters |
-
2011
- 2011-12-05 CN CN2011103988404A patent/CN102494404B/en active Active
- 2011-12-09 WO PCT/CN2011/083740 patent/WO2013082797A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201078722Y (en) * | 2007-11-13 | 2008-06-25 | 景洪 | Condensing type high-efficiency gas positive displacement water heater |
| CN201508017U (en) * | 2009-05-18 | 2010-06-16 | 赵庆义 | Improved gas water heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438563A (en) * | 2013-08-31 | 2013-12-11 | 苏州赛斯德工程设备有限公司 | Total encapsulation type gas water heater |
| WO2023124590A1 (en) * | 2021-12-29 | 2023-07-06 | 艾欧史密斯(中国)热水器有限公司 | Condensing heat exchanger and hot water/heating device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102494404B (en) | 2013-12-11 |
| WO2013082797A1 (en) | 2013-06-13 |
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