CN110542202A - Gas water heater - Google Patents
Gas water heater Download PDFInfo
- Publication number
- CN110542202A CN110542202A CN201910939624.2A CN201910939624A CN110542202A CN 110542202 A CN110542202 A CN 110542202A CN 201910939624 A CN201910939624 A CN 201910939624A CN 110542202 A CN110542202 A CN 110542202A
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- Prior art keywords
- gas
- combustion
- water heater
- mixing device
- communicated
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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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000007789 gas Substances 0.000 claims abstract description 148
- 238000002485 combustion reaction Methods 0.000 claims abstract description 70
- 230000003197 catalytic effect Effects 0.000 claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- VASIZKWUTCETSD-UHFFFAOYSA-N manganese(II) oxide Inorganic materials [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- 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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium 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
- F24H9/0005—Details for water heaters
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/107—Flame diffusing means coated with catalysts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The invention discloses a gas water heater, which comprises a gas mixing device, a combustion chamber, a heat exchange chamber and a condensed water collector which are communicated in sequence; the gas inlet end of the gas mixing device is respectively communicated with the air supply device and the gas supply device, and the combustible gas and the combustion-supporting air form mixed gas in the gas mixing device; a catalytic combustor is arranged in the combustion chamber, and the mixed gas is oxidized and combusted in the catalytic combustor to generate high-temperature flue gas; a heat exchanger is arranged in the heat exchange chamber, and the high-temperature flue gas heats water in the heat exchanger to generate hot water; the air outlet end of the condensed water collector is communicated with a smoke exhaust device, low-temperature smoke is exhausted by the smoke exhaust device, and the generated condensed water falls into the condensed water collector. The gas water heater provided by the invention can be used for carrying out catalytic oxidation on gas, effectively and fully burning the gas under the action of the catalytic burner, reducing the temperature during burning and finally inhibiting the generation of oxynitride and carbon monoxide.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a gas water heater.
Background
The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. At present, energy conservation and emission reduction are development directions advocated by the nation, and products with less energy consumption are a future development direction.
The combustion technology of the existing gas water heater is basically divided into atmospheric combustion and full premix combustion, wherein the two combustion modes are combustion with flame, the combustion temperature of gas is high, harmful substances such as oxynitride and the like can be generated, the harmful substances not only cause harm to human bodies, but also cause serious pollution to atmosphere, and simultaneously, because of insufficient combustion, carbon monoxide can be generated, and the energy utilization rate is reduced.
Disclosure of Invention
the invention aims to provide a gas water heater which can well solve the problems of insufficient combustion, high combustion temperature and the like.
In order to achieve the purpose, the specific technical scheme of the gas water heater is as follows:
A gas water heater comprises a gas mixing device, a combustion chamber, a heat exchange chamber and a condensed water collector which are communicated in sequence; the gas inlet end of the gas mixing device is respectively communicated with the air supply device and the gas supply device, and the combustible gas and the combustion-supporting air form mixed gas in the gas mixing device; a catalytic combustor is arranged in the combustion chamber, and the mixed gas is oxidized and combusted in the catalytic combustor to generate high-temperature flue gas; a heat exchanger is arranged in the heat exchange chamber, and the high-temperature flue gas heats water in the heat exchanger to generate hot water; the air outlet end of the condensed water collector is communicated with a smoke exhaust device, low-temperature smoke is exhausted by the smoke exhaust device, and the generated condensed water falls into the condensed water collector.
Further, the gas mixing device, the combustion chamber, the heat exchange chamber and the condensed water collector are sequentially arranged from top to bottom.
Further, the gas mixing device comprises a contraction part, a mixing part, a diffusion part and a flow dividing part which are sequentially communicated, the contraction part is communicated with the air supply device and the air supply device, the combustible gas and the combustion air are mixed in the mixing part, the pressure of the mixed gas is changed in the diffusion part, and the flow dividing part is communicated with the combustion chamber.
furthermore, the contraction part of the gas mixing device is of a Venturi tube structure.
Further, a turbulence component is arranged in a mixing part of the gas mixing device, and the turbulence component can change the flow path of the mixed gas so as to improve the mixing effect of the combustible gas and the combustion air.
further, the turbulent flow component is a spiral guide groove.
Further, the diffuser opening angle of the diffuser of the gas mixing device is 6 to 8 °.
Furthermore, a flow distribution plate is arranged in a flow distribution part of the gas mixing device, and a plurality of gas through holes are formed in the flow distribution plate.
Further, the catalytic combustor includes combustor body and burning catalyst, is provided with a plurality of burner ports on the combustor body, and the burning catalyst sets up on the combustor body.
Further, the burner body is made of SiO2 or AL2O3 material.
Further, the aperture of the combustion hole on the burner body is 1.2-1.5 mm or 1.1-1.2 mm.
Further, the combustion hole on the burner body is circular or polygonal.
Further, the combustion catalyst is Pd, Pt, CuO, MnO 2.
The gas water heater of the invention has the following advantages:
1) the fuel gas is subjected to catalytic oxidation, and can be effectively and fully combusted under the action of the catalytic combustor, so that the temperature during combustion is reduced, and the generation of nitrogen oxides and carbon monoxide is finally inhibited;
2) The fuel gas is effectively and fully combusted, and the energy conversion efficiency is improved.
Drawings
FIG. 1 is a schematic view of the internal structure of a gas water heater of the present invention;
FIG. 2 is a schematic structural view of a first embodiment of the gas mixing device in the gas water heater of the present invention;
FIG. 3 is a schematic structural view of a second embodiment of the gas mixing device in the gas water heater of the present invention;
FIG. 4 is a schematic construction of a first embodiment of the catalytic burner in the gas water heater of the present invention;
Fig. 5 is a schematic structural diagram of a second embodiment of the catalytic burner in the gas water heater of the present invention.
Detailed Description
For a better understanding of the objects, structure and function of the invention, a gas water heater according to the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the gas water heater of the present invention includes a gas mixing device 10, a combustion chamber, a heat exchange chamber, and a condensate collector 40, which are sequentially communicated from top to bottom. Wherein, the air inlet end of the gas mixing device 10 is respectively communicated with the air supply device 50 and the air supply device, and the combustible gas and the combustion air form mixed gas in the gas mixing device 10.
Further, a catalytic burner 20 is arranged in the combustion chamber, and the mixed gas is oxidized and combusted in the catalytic burner 20 to generate high-temperature flue gas; the heat exchanger 30 is arranged in the heat exchange chamber, and the high-temperature flue gas heats water in the heat exchanger 30 to generate hot water; the air outlet end of the condensed water collector 40 is communicated with the smoke exhaust device 60, the low-temperature smoke is exhausted by the smoke exhaust device 60, and the generated condensed water falls into the condensed water collector 40.
Therefore, the gas water heater adopts the inverted full-premix catalytic combustion, the heat exchange direction of the high-temperature flue gas is transferred from top to bottom, most of the flue gas is condensed in the heat exchange chamber, and the generated condensed water can directly flow into the condensed water collector.
Specifically, as shown in fig. 1 to 3, in the present embodiment, the gas mixing device 10 includes a contraction portion 11, a mixing portion 12, a diffuser portion 13, and a flow dividing portion 14, which are sequentially communicated, in which the contraction portion 11 is communicated with the air supply device 50 and the air supply device, the combustible gas and the combustion air are mixed in the mixing portion 12, the pressure of the mixed gas is changed in the diffuser portion 13, and the flow dividing portion 14 is communicated with the combustion chamber.
Furthermore, the contraction part 11 of the gas mixing device 10 adopts a venturi tube structure, and is respectively communicated with the air supply device 50 and the air supply device, the combustion-supporting air is sent into the gas mixing device 10 by the air supply device 50, the combustible gas is sent into the gas mixing device 10 by the air supply device, and the gas mixing device 10 with the venturi tube structure enables the combustible gas to enter more smoothly. Preferably, a gas proportional valve 70 is provided between the gas mixing device 10 and the gas supply device to adjust the amount of intake air as required. Of course, it should be understood that the constriction portion of the gas mixing device of the present invention may also adopt other types of air intake structures, and is not limited to the illustrated structure, as long as the smooth intake of the combustion air and the combustible gas is achieved.
Further, the mixing part 12 of the gas mixing device 10 is a position where the combustion air and the combustible gas are mixed, and fig. 2 shows a general type of the mixing part 12, and the combustion air and the combustible gas are naturally mixed only in the flowing process of the mixing part 12; fig. 3 shows a special mixing section 12, in which a flow disturbing assembly 15 is arranged, the flow disturbing assembly 15 can change the flow path of the mixed gas to improve the mixing effect of the combustible gas and the combustion air, and preferably, the flow disturbing assembly 15 is a spiral guide groove. Of course, it is understood that the mixing section of the gas mixing device of the present invention may have other mixing structures, and is not limited to the one shown in the drawings as long as the uniform mixing of the combustion air and the combustible gas can be achieved.
Further, the diffuser 13 of the gas mixing device 10 changes the pressure of the mixed gas from dynamic pressure to static pressure to increase the pressure of the mixed gas, and also can mix the combustion air and the combustible gas uniformly. As shown in fig. 2 and 3, the diffuser angle α of the diffuser 13 (the angle between the direction in which the opening of the diffuser 13 extends and the direction in which the side wall of the diffuser 13 extends) is preferably generally 6 ° to 8 °, and the resistance loss is the smallest. Of course, it is understood that the diffuser angle of the diffuser in the present invention can be flexibly adjusted according to the actual situation, and is not limited to the illustration in the drawings.
Further, a splitter plate is disposed in the splitter portion 14 of the gas mixing device 10, and the splitter plate may be made of metal or other high temperature resistant materials, and a plurality of gas through holes are disposed on the splitter plate to stabilize the gas flow and split the gas flow. Therefore, the gas mixing device 10 of the present invention can realize uniform and sufficient mixing of the combustion air and the combustible gas, and deliver the mixed gas to the combustion chamber for combustion.
Further, as shown in fig. 1, 4 and 5, the catalytic combustor 20 in the combustion chamber includes a combustor body 21 and a combustion catalyst, wherein the combustor body 21 is made of a high temperature resistant material, preferably silica gel (SiO2) and aluminum gel (AL2O3), the combustor body 21 is provided with a plurality of combustion holes 22, and according to practical situations, the diameter of the combustion holes 22 on the combustor body 21 may be 1.2-1.5 mm (for natural gas) or 1.1-1.2 mm (for liquefied petroleum gas). In addition, as shown in fig. 4 and 5, the shape of the combustion hole 22 of the burner body 21 can be flexibly selected according to actual conditions, such as a circle or a polygon.
Further, the combustion catalyst is provided on the burner body 21 for oxidizing the mixed gas (combustion air and combustible gas) and reducing the flash point of the mixed gas (combustion air and combustible gas). Preferably, the combustion catalyst is made of Pd, Pt, CuO, MnO2, or the like, and is attached to the surface of the burner body 21, such as the upper surface, the lower surface, the inner surface of the burner port 22, or the like, and the larger the contact surface of the combustion catalyst with the mixed gas, the better the catalytic action. Of course, it is to be understood that other catalytic materials may be used for the combustion catalyst of the present invention, and are not limited to the above materials.
The combustion catalyst on the catalytic combustor can oxidize the mixed gas (combustion air and combustible gas) in advance, the oxidized mixed gas (combustion air and combustible gas) is combusted on the surface of the combustion hole of the catalytic combustor, the combustion products are carbon dioxide and water vapor, and nitrogen oxides are not generated after combustion because of low combustion temperature and short combustion time.
further, a water inlet of a heat exchanger 30 in the heat exchange chamber is connected with a cold water pipe 31, a flow sensor 32 is arranged on the cold water pipe 31, a water outlet of the heat exchanger 30 is connected with a hot water pipe 33, a temperature sensor 34 is arranged on the hot water pipe 33, one side of the heat exchanger 30 is arranged opposite to the combustion chamber, the other side of the heat exchanger is arranged opposite to a condensed water collector 40, an air outlet of the condensed water collector 40 is connected with a smoke exhaust device 60, and a water outlet of the condensed water collector 40 is connected with a water drain pipe.
Further, the gas water heater of the present invention is further provided with an electric control device 90, and the electric control device 90 is respectively connected with the gas proportional valve 70, the air supply device 50, the temperature sensor 34, the flow sensor 32, the igniter and other components through electric connection to form an electric control system.
The working principle of the gas water heater of the present invention is explained with reference to fig. 1 to 5 as follows:
cold water flows into the cold water pipe 31 from the flow sensor 32, the flow sensor 32 receives water flow information and sends an instruction to the electric control device 90, the electric control device 90 sends an instruction to start the air supply device 50, the air supply device 50 starts to supply air, the electric control device 90 sends an instruction to start the igniter, the igniter starts to ignite, the electric control device 90 sends an instruction to start the gas proportional valve 70, and the gas proportional valve 70 opens the valve according to a specified requirement to supply natural gas.
Air and natural gas enter the gas mixing device 10 together, are uniformly and fully mixed in the gas mixing device 10, then form combustible gas, the combustible gas enters the catalytic combustor 20 and is subjected to oxidation reaction with a catalyst in the catalytic combustor 20, and the combustible gas after the reaction is ignited on the surface of the catalytic combustor 20. Because the combustible gas is oxidized in advance, the combustible gas has the phenomena of low combustion temperature and short combustion time, and nitrogen oxide is not generated basically after combustion.
The high temperature flue gas after burning flows into the cavity of the heat exchanger 30 from top to bottom under the drive of the air supply device 50, the high temperature flue gas transfers heat to the water pipe of the heat exchanger 30, the water pipe transfers heat to cold water, the cold water is heated into hot water, the hot water flows into the hot water pipe 33 from the water outlet of the heat exchanger 30, and then flows out of the machine from the hot water pipe 33, so that the hot water is supplied.
The high temperature flue gas transfers heat to the heat exchanger 30 and then turns into low temperature flue gas, and the water vapor in the low temperature flue gas condenses into water drops and falls into the condensed water collector 40, and is discharged out of the machine through the drain pipe 80. The low-temperature flue gas enters the smoke exhaust device 60 from the air outlet of the condensed water collector 40 and is finally exhausted out of the machine through the smoke exhaust device 60. Because of implementing the inversion type catalytic combustion and heat exchange mode, the collection of the condensed water is more convenient and reliable.
The electric control device 90 collects the water temperature signal fed back by the temperature sensor 34, and further adjusts the output of the gas proportional valve 70 to match with the air, and finally outputs the water temperature required by the user.
The gas water heater provided by the invention can be used for carrying out catalytic oxidation on gas, and effectively and fully burning the gas under the action of the catalytic burner, so that the temperature during burning is reduced, and the generation of nitrogen oxides and carbon monoxide is finally inhibited; meanwhile, the fuel gas is effectively and fully combusted, and the energy conversion efficiency is also improved.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (13)
1. A gas water heater is characterized by comprising a gas mixing device, a combustion chamber, a heat exchange chamber and a condensed water collector which are communicated in sequence; the gas inlet end of the gas mixing device is respectively communicated with the air supply device and the gas supply device, and the combustible gas and the combustion-supporting air form mixed gas in the gas mixing device; a catalytic combustor is arranged in the combustion chamber, and the mixed gas is oxidized and combusted in the catalytic combustor to generate high-temperature flue gas; a heat exchanger is arranged in the heat exchange chamber, and the high-temperature flue gas heats water in the heat exchanger to generate hot water; the air outlet end of the condensed water collector is communicated with a smoke exhaust device, low-temperature smoke is exhausted by the smoke exhaust device, and the generated condensed water falls into the condensed water collector.
2. The gas water heater of claim 1, wherein the gas mixing device, the combustion chamber, the heat exchange chamber and the condensate collector are arranged in sequence from top to bottom.
3. The gas water heater according to claim 1 or 2, wherein the gas mixing device comprises a contraction part, a mixing part, a diffuser part and a flow dividing part which are sequentially communicated, the contraction part is communicated with the air supply device and the air supply device, the combustible gas and the combustion air are mixed in the mixing part, the pressure of the mixed gas is changed in the diffuser part, and the flow dividing part is communicated with the combustion chamber.
4. a gas water heater as claimed in claim 3, wherein the constriction of the gas mixing device is a venturi tube arrangement.
5. The gas water heater of claim 3, wherein a flow disturbing assembly is disposed in the mixing portion of the gas mixing device, and the flow disturbing assembly can change the flow path of the mixed gas to improve the mixing effect of the combustible gas and the combustion air.
6. The gas fired water heater of claim 5, wherein the baffle assembly is a helical guide slot.
7. A gas water heater according to claim 3, wherein the diffuser opening angle of the diffuser of the gas mixing device is 6 ° to 8 °.
8. The gas water heater of claim 3, wherein a flow distribution plate is provided in the flow distribution portion of the gas mixing device, and a plurality of gas through holes are provided in the flow distribution plate.
9. The gas water heater of claim 1 or 2, wherein the catalytic burner comprises a burner body and a combustion catalyst, the burner body is provided with a plurality of combustion holes, and the combustion catalyst is disposed on the burner body.
10. The gas water heater of claim 9, wherein the burner body is made of SiO2 or AL2O3 material.
11. The gas water heater of claim 9, wherein the diameter of the combustion hole of the burner body is 1.2-1.5 mm or 1.1-1.2 mm.
12. The gas water heater of claim 9, wherein the burner holes of the burner body are circular or polygonal.
13. The gas water heater of claim 9, wherein the combustion catalyst is Pd, Pt, CuO, MnO 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910939624.2A CN110542202A (en) | 2019-09-30 | 2019-09-30 | Gas water heater |
| PCT/CN2020/098668 WO2021063049A1 (en) | 2019-09-30 | 2020-06-29 | Gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910939624.2A CN110542202A (en) | 2019-09-30 | 2019-09-30 | Gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542202A true CN110542202A (en) | 2019-12-06 |
Family
ID=68715140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910939624.2A Pending CN110542202A (en) | 2019-09-30 | 2019-09-30 | Gas water heater |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110542202A (en) |
| WO (1) | WO2021063049A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021063049A1 (en) * | 2019-09-30 | 2021-04-08 | 珠海格力电器股份有限公司 | Gas water heater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352005Y (en) * | 2008-12-12 | 2009-11-25 | 广东万家乐燃气具有限公司 | Fully premixing condensation type gas water heater |
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| CN203478243U (en) * | 2013-09-26 | 2014-03-12 | 新奥科技发展有限公司 | Premixed type catalytic burner |
| CN105258323A (en) * | 2015-11-10 | 2016-01-20 | 广东万家乐燃气具有限公司 | Gas water heater based on catalytic combustion |
| KR20180138243A (en) * | 2017-06-19 | 2018-12-31 | 주식회사 동방환경기연 | Pre-mixed air and gas type burners for capable of stable combustion under extreme conditions |
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| CN203396100U (en) * | 2013-07-31 | 2014-01-15 | 成都市双流壁挂热交换器有限责任公司 | Inversely-arranged stainless steel condensing type gas water heater |
| CN207006142U (en) * | 2016-12-22 | 2018-02-13 | 佛山市神州欧诚热能科技有限公司 | A kind of fully pre-mixing gas combustion water heater filtered with air and combustion gas |
| CN207335137U (en) * | 2017-10-25 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| CN110542202A (en) * | 2019-09-30 | 2019-12-06 | 珠海格力电器股份有限公司 | Gas water heater |
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2019
- 2019-09-30 CN CN201910939624.2A patent/CN110542202A/en active Pending
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2020
- 2020-06-29 WO PCT/CN2020/098668 patent/WO2021063049A1/en active Application Filing
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| CN201352005Y (en) * | 2008-12-12 | 2009-11-25 | 广东万家乐燃气具有限公司 | Fully premixing condensation type gas water heater |
| CN103090541A (en) * | 2011-11-01 | 2013-05-08 | 樱花卫厨（中国）股份有限公司 | Inverted full-premix condensing gas water heater |
| CN203478243U (en) * | 2013-09-26 | 2014-03-12 | 新奥科技发展有限公司 | Premixed type catalytic burner |
| CN105258323A (en) * | 2015-11-10 | 2016-01-20 | 广东万家乐燃气具有限公司 | Gas water heater based on catalytic combustion |
| KR20180138243A (en) * | 2017-06-19 | 2018-12-31 | 주식회사 동방환경기연 | Pre-mixed air and gas type burners for capable of stable combustion under extreme conditions |
| CN210861686U (en) * | 2019-09-30 | 2020-06-26 | 珠海格力电器股份有限公司 | Gas water heater |
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| WO2021063049A1 (en) * | 2019-09-30 | 2021-04-08 | 珠海格力电器股份有限公司 | Gas water heater |
Also Published As
| Publication number | Publication date |
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| WO2021063049A1 (en) | 2021-04-08 |
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