CN205137852U - Gas water heater - Google Patents

Gas water heater Download PDF

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Publication number
CN205137852U
CN205137852U CN201520850801.7U CN201520850801U CN205137852U CN 205137852 U CN205137852 U CN 205137852U CN 201520850801 U CN201520850801 U CN 201520850801U CN 205137852 U CN205137852 U CN 205137852U
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CN
China
Prior art keywords
gas
combustion
temperature
module
catalytic combustion
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CN201520850801.7U
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Chinese (zh)
Inventor
郑涛
李键
冯青
王瑞娟
许福海
张波
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Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
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Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
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Priority to CN201520850801.7U priority Critical patent/CN205137852U/en
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Abstract

The utility model provides a gas water heater, including combustion chamber and the combustor of setting in the combustion chamber, gas water heater still includes: the catalytic combustion module sets up in the combustion chamber and is located the combustor top to utilize gas in the combustion chamber when burning with the form of flame on the combustor heat of release heat it, temperature sensor for detect the temperature of catalytic combustion module, and gas accuse system, configure into after the temperature of catalytic combustion module reaches more than the predetermined catalysis combustion initiation temperature, make the flame extinction on the combustor to make to get into the nonflame is carried out in gas in the combustion chamber when the catalytic combustion module of flowing through surperficial catalytic combustion. The utility model discloses after utilizing flame with the heating of catalytic combustion module, the catalytic combustion of nonflame is carried out in messenger's gas under the catalytic action of catalytic combustion module, improved the combustion efficiency of gas, reduces gaseous pollutants's emission simultaneously.

Description

Gas heater
Technical field
The utility model relates to technical field of water heaters, particularly relates to a kind of gas heater.
Background technology
Current gas heater adopts naked light as thermal source usually, and naked light burning inevitably produces product C O and the high-temperature product NO of incomplete combustion x.In prior art, in order to the discharge of decreasing pollution thing, gas heater is typically employed in heat exchanger rear end and carries out catalytic combustion, reduces carbon monoxide by catalyst mode.But the method is the post processing based on burning, and catalyticing combustion process does not utilize the high temperature of primary combustion, can not remove the carbon monoxide in emission gases well, NO can not be reduced simultaneously xdischarge, and catalytic combustion produce heat be not also utilized.
Utility model content
An object of the present utility model is in view of the foregoing defects the prior art has, provides the gas heater that a kind of pollutant emission is few.
Another object of the present utility model to provide a kind of thermal efficiency high, fuel gas buring gas heater cmpletely.
To achieve these goals, the utility model provides a kind of gas heater, and comprise combustion chamber and be arranged on the burner in described combustion chamber, it also comprises:
Catalytic combustion module, to be arranged in described combustion chamber and to be positioned at above described burner, and when burning with the form of flame on described burner to utilize the combustion gas in described combustion chamber, the heat of release is heated;
Temperature sensor, for detecting the temperature of described catalytic combustion module; And
Pneumatic control system, be configured to after more than the catalysis initiation temperature that the temperature of described catalytic combustion module reaches default, make the fray-out of flame on described burner, thus make to enter nonflame is carried out in combustion gas in described combustion chamber catalytic combustion when flowing through described catalytic combustion module surperficial.
Alternatively, described pneumatic control system comprises for regulating the gas ratio valve entering combustion gas in described combustion chamber and AIR Proportional.
Alternatively, described gas heater also comprises for the gas inlet pipeline to described gas heater supply combustion gas; Described pneumatic control system comprises and being arranged on described gas inlet pipeline for conducting and/or the stop valve disconnecting described gas inlet pipeline.
Alternatively, described catalytic combustion module comprises cellular catalyst carrier and is arranged on the catalyst in described catalyst carrier.
Alternatively, between described catalytic combustion module and described burner, there is preset pitch, to prevent the direct flame contact on described catalytic combustion module and described burner.
Alternatively, described gas heater also comprises igniter, for the combustion gas entered in described combustion chamber is lighted formation flame on described burner.
Alternatively, described gas heater also comprises heat exchanger, and it is arranged on the top of described catalytic combustion module, for absorbing the heat of fuel gas buring release to heat the water entered in described gas heater.
The utility model arranges catalytic combustion module by square on the burner, when utilizing combustion gas to burn with the form of flame on the burner, the heat of release is heated after more than the catalysis initiation temperature reaching default, utilize pneumatic control system by the fray-out of flame on burner, thus make to enter nonflame is carried out in combustion gas in combustion chamber catalytic combustion when flowing through catalytic combustion module surperficial.Thus, combustion gas can carry out flameless combustion at catalyst surface at a lower temperature, because catalytic action, making combustion gas close to burning completely, almost not having CO to discharge; Because the flue-gas temperature after catalytic combustion is lower than the temperature of flaming combustion, NO can be realized xlow emission.
Further, when the catalytic combustion of nonflame is carried out in combustion gas under the catalytic action of catalytic combustion module in the utility model, combustion gas Thorough combustion can be made, improve the efficiency of combustion of combustion gas, there is the advantage that the thermal efficiency is high, be conducive to realizing energy-saving and emission-reduction.
Further, for flaming combustion, because the control difficulty of flame is comparatively large, the stability of flame is not high, very complicated to the control procedure of outlet water temperature of water heater.And in the utility model, substantially all flameless combustion is come to the energy that hot water heats, by controlling air-fuel ratio (i.e. the ratio of air and combustion gas), stable flameless combustion can be realized, thus be more conducive to the control of outlet water temperature of water heater.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the schematic diagram of the gas heater according to the utility model embodiment;
Fig. 2 is the schematic block diagram of the gas heater according to the utility model embodiment;
Fig. 3 is the indicative flowchart of the control method of gas heater according to the utility model embodiment.
Detailed description of the invention
Fig. 1 is the schematic diagram of the gas heater 100 according to the utility model embodiment; Fig. 2 is the schematic block diagram of the gas heater 100 according to the utility model embodiment.As depicted in figs. 1 and 2, as those skilled in the art will appreciate that, also can comprise combustion chamber 30 according to the gas heater 100 of the utility model embodiment is the same with existing conventional gas water heater, be arranged on the burner 8 in combustion chamber 30 and igniter 9.Igniter 9 is for lighting the combustion gas entered in combustion chamber 30 on burner 8.Combustion gas is burnt with the form of flame after being lighted by igniter 9 on burner 8, produces high-temperature flue gas.
Gas heater 100 also can comprise the water inlet pipe 26 for introducing water inlet in gas heater 100, absorb the heat of fuel gas buring release with the heat exchanger 14 heated the water entered in gas heater 100, for externally providing the hot water outlet pipe 2 of hot water, and for supplying the gas inlet pipeline 22 of combustion gas to gas heater 100.Heat exchanger 14 can be arranged in flue gas heat exchange chamber 12.Flue gas heat exchange chamber 12 is arranged on the top of combustion chamber 30 usually, and it is communicated with inside, combustion chamber 30, to make the high-temperature flue gas in combustion chamber 30 flow in flue gas heat exchange chamber 12 carry out heat exchange to be heated by water with heat exchanger 14.Exhaust fume collecting hood 20 is provided with, for collecting the flue gas after heat exchange and making it be discharged into outside above flue gas heat exchange chamber 12.
The below of combustion chamber 30 is provided with blower fan 4, for providing the air of burning for combustion chamber 30.Blower fan 4 can adjust rotating speed, to control the air capacity entering combustion chamber 30 according to gas inlet amount.Gas ratio valve 24 is arranged on gas inlet pipeline 22, enters combustion gas in combustion chamber 30 and AIR Proportional for regulating.Gas inlet pipeline also arranges stop valve 21, for conducting and/or disconnection gas inlet pipeline 22.Be provided with fuel gas mixer 6 below burner 8, after combustion gas and air mix in fuel gas mixer 6, enter in combustion chamber 30 via burner 8.
Gas heater 100 is provided with gas linkage apparatus for gas (not shown) usually, when the valve of hot water outlet pipe 2 is opened, the water flow that gas linkage apparatus for gas senses reaches when hydraulic pressure that flow preset value or gas linkage apparatus for gas sense reaches hydraulic pressure preset value to be connected power supply, and initial igniter 9, meanwhile open the stop valve 21 on gas inlet pipeline 22.
Further, in the utility model embodiment, gas heater 100 also comprises catalytic combustion module 10, and it to be arranged in combustion chamber 30 and to be positioned at above burner 8, and when burning with the form of flame on burner 8 to utilize the combustion gas in combustion chamber 30, the heat of release is heated.Catalytic combustion module 10 heats by the high-temperature flue gas namely utilizing combustion gas flaming combustion to be formed.For catalytic combustion module 10, those skilled in the art will appreciate that, it has catalysis initiation temperature usually, namely, after the temperature of catalytic combustion module 10 itself reaches catalysis initiation temperature, the combustion gas flowing through it will carry out flameless combustion with release heat with the oxygen in air under catalyst action.
In a further embodiment, between catalytic combustion module 10 and burner 8, there is preset pitch, to ensure that catalytic combustion module 10 can utilize the high temperature that discharges during combustion gas flaming combustion to be heated to reach the temperature of more than catalysis initiation temperature to it, catalytic combustion module 10 and the direct flame contact on burner 8 can also be prevented simultaneously.Burner 8 is arranged on the bottom of combustion chamber 30 usually, catalytic combustion module 10 can be arranged in the upper space of combustion chamber 30, be positioned at above the flame of formation when flaming combustion is carried out in combustion gas on burner 8 to make catalytic combustion module 10, and can not be among flame, affect the service life of catalytic combustion module 10 in order to avoid temperature is too high or damage is caused to catalytic combustion module 10.
The catalyst that catalytic combustion module 10 can comprise catalyst carrier and arrange on a catalyst support.Wherein, catalyst carrier preferably has alveolate texture.Catalyst carrier can be made up of heat resisting ceramic materials, also can be made up of heat-resisting metal material, or also can be made up of both combinations.Catalyst can be platinum, palladium, also can be thulium, alkali earth metal or transition metal; Certainly also can be made up of above-mentioned two or more metal mixed.For the catalytic combustion module 10 of special catalyst, its catalysis initiation temperature is normally fixed, or fluctuates in smaller temperature range.
The thickness of catalytic combustion module 10 is unrestricted, area, reaction efficiency is in contact with it to improve combustion gas as far as possible, and the high-temperature flue gas formed after ensureing fuel gas buring can smoothly by catalytic combustion module 10, in order to avoid affect the normal combustion of combustion gas and heat exchanger 14 heats.
Especially, gas heater 100 also comprises temperature sensor 40 and pneumatic control system 50.Temperature sensor 40 is for detecting the temperature of catalytic combustion module 10.The temperature of the catalytic combustion module 10 detected can be sent to pneumatic control system 50 by temperature sensor 40.Pneumatic control system 50 is configured to after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, make the fray-out of flame on burner 8, thus make to enter nonflame is carried out in combustion gas in combustion chamber 30 catalytic combustion when flowing through catalytic combustion module 10 surperficial.Namely, after more than temperature sensor 40 detects the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, make the fray-out of flame on burner 8, the combustion gas entered like this in combustion chamber 30 can not carry out flaming combustion, and can carry out the catalytic combustion of nonflame when flowing through catalytic combustion module 10 surperficial, thus the heat utilizing the catalytic combustion of nonflame to generate heats the water in gas heater 100.As can be seen here, the utility model can make combustion gas carry out flameless combustion at catalyst surface at a lower temperature, because catalytic action, making combustion gas close to burning completely, almost not having CO to discharge; Because the flue-gas temperature after catalytic combustion is lower than the temperature of flaming combustion, NO can be realized xlow emission.
When after fray-out of flame, if there is no timely well-off combustion gas, may occur that cannot to carry out the heat of generation when flameless combustion or combustion gas deficiency cause it to carry out flameless combustion less because in time supply is failed in combustion gas, the temperature of catalytic combustion module 10 is not enough to maintain more than catalysis initiation temperature, cause when supplying sufficient combustion gas, the temperature of catalytic combustion module 10 has been reduced to the effect cannot playing catalysis lower than catalysis initiation temperature, thus causes waste and the environmental pollution of combustion gas.In order to avoid this situation as far as possible, pneumatic control system 50 is configured to, after the temperature of catalytic combustion module 10 reaches and exceeds catalysis initiation temperature one design temperature threshold value, make the fray-out of flame on burner 8 further.By such setting, the temperature of catalytic combustion module 10 is made to be reduced to time of catalysis initiation temperature relatively long, for gas heater 100 provides comparatively plenty of time to well-off combustion gas in combustion chamber 30.In a preferred embodiment, this design temperature threshold value is selected from the arbitrary temperature value in 50 DEG C ~ 600 DEG C.This design temperature threshold value can be selected from the arbitrary temperature value in 300 DEG C ~ 500 DEG C further.Particularly, such as, if the catalysis initiation temperature of catalytic combustion module 10 is about 500 DEG C, then can when the temperature of catalytic combustion module 10 is heated to about 1000 DEG C knock down the flame.
In certain embodiments, pneumatic control system 50 can comprise gas ratio valve 24, it is configured to: after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, the ratio of the combustion gas entered in combustion chamber 30 and air is turned down to the first default proportion threshold value, to make the fray-out of flame on burner 8; After fray-out of flame on burner 8 and before the temperature of catalytic combustion module 10 drops to catalysis initiation temperature, the ratio of the combustion gas entered in combustion chamber 30 and air is heightened to the second default proportion threshold value, to make to enter nonflame is carried out in combustion gas in combustion chamber 30 catalytic combustion when flowing through catalytic combustion module 10 surperficial, and the heat of catalytic combustion release at least can make the temperature of catalytic combustion module 10 remain on more than catalysis initiation temperature, wherein the second proportion threshold value is greater than the first proportion threshold value.
It will be understood by those skilled in the art that the first proportion threshold value has certain associate with the water yield (as less than 10 liters, 11 rise to 15 liters, 16 liters with first-class) of gas heater with type (as condensing, thermostatic type, wideband temp .-regulating type etc.) with the second proportion threshold value.For specific gas heater, determine the first proportion threshold value and the optional number range of the second proportion threshold value by experiment.
In certain embodiments, the first proportion threshold value can be selected in the number range of 0 ~ 1/39.When the ratio of the combustion gas entered in combustion chamber 30 and air turn down to 1/39 time, the flame on burner 8 can automatic distinguishing.Further, the first proportion threshold value is preferably selected in the number range of 0 ~ 1/50, to guarantee fray-out of flame further.
In certain embodiments, the second proportion threshold value can be selected in the number range of 3/97 ~ 7/93.By such setting, the heat of catalytic combustion release can make the temperature of catalytic combustion module 10 remain on more than catalysis initiation temperature, and extra heat can be had to heat the water in gas heater 100.In a further embodiment, the second proportion threshold value can be selected in the number range of 1/24 ~ 3/47, produces enough heats heat the water in gas heater 100 to enable flameless combustion.
When the first proportion threshold value is 1/39, namely the ratio of combustion gas and air is 1/39, this means that the percentage of combustion gas in the gaseous mixture of combustion gas and air is 2.5%.When the second proportion threshold value is 3/97, namely the ratio of combustion gas and air is 3/97, this means that the percentage of combustion gas in the gaseous mixture of combustion gas and air is 3%.Particularly, after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, turn down to less than 2.5% by regulating gas proportioning valve 24 by the percentage of combustion gas in the gaseous mixture entered in combustion chamber 30, now flame can be extinguished.Then, by regulating gas proportioning valve 24, the percentage of combustion gas in the gaseous mixture entered in combustion chamber 30 being heightened to more than 3%, entering combustion gas in combustion chamber 30 can carry out nonflame catalytic combustion when flowing through catalytic combustion module 10 surperficial like this; And the heat of catalytic combustion release can make the temperature of catalytic combustion module 10 remain on more than catalysis initiation temperature, and extra heat can be had to heat the water in gas heater 100.
In certain embodiments, the ratio of the combustion gas entered in combustion chamber 30 and air is being heightened to the second proportion threshold value, can again by the proportion adjustment of combustion gas and air to calculate according to leaving water temperature, inflow temperature, flow etc. the gas proportion obtained, when carrying out flameless combustion to make combustion gas, the heat of release can meet water demand.In an alternative embodiment, the second proportion threshold value also can be and calculates according to leaving water temperature, inflow temperature, flow etc. the gas proportion obtained.
In further embodiments, pneumatic control system 50 can comprise stop valve 21, and it is configured to: after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, closes stop valve 21 and disconnects gas inlet pipeline 22, to make the fray-out of flame on burner 8; Before the temperature of catalytic combustion module 10 drops to catalysis initiation temperature, stop valve 21 conducting gas inlet pipeline 22 is opened, to continue to supply combustion gas to combustion chamber 30 after fray-out of flame on burner 8.
Particularly, after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, close stop valve 21 and disconnect gas inlet pipeline 22, now flame can be extinguished.Then, opening stop valve 21 conducting gas inlet pipeline 22, continue to supply combustion gas to combustion chamber 30, entering nonflame is then carried out in combustion gas in combustion chamber 30 catalytic combustion when flowing through catalytic combustion module 10 surperficial.
It will be understood by those skilled in the art that in the process of regulating gas proportioning valve 24 or switch stop valve 21 after fray-out of flame, the intake of blower fan 4 can tune up according to actual needs, turns down or remain unchanged.
In an alternative embodiment, pneumatic control system 50 those skilled in the art also can be adopted easily to expect other modes by fray-out of flame.
Fig. 3 is the indicative flowchart of the control method of gas heater 100 according to the utility model embodiment.See Fig. 3, this control method comprises steps A-step D.
Steps A: receive firing command.
Step B: the igniter 9 opening gas heater 100, lights to form flame by the combustion gas entered in combustion chamber 30, thus heats catalytic combustion module 10 on burner 8.
In certain embodiments, in step, gas heater 100 receives firing command by gas linkage apparatus for gas.Be appreciated that the water flow sensed when gas linkage apparatus for gas reaches hydraulic pressure that flow preset value or gas linkage apparatus for gas sense when reaching hydraulic pressure preset value, then mean that gas heater 100 receives firing command.
Those skilled in the art will appreciate that, steps A and step B can be like the prior art, namely when the valve of the hot water outlet pipe 2 of gas heater 100 is opened, the water flow that gas linkage apparatus for gas senses reaches after hydraulic pressure that flow preset value or gas linkage apparatus for gas sense reaches hydraulic pressure preset value to be connected power supply, and initial igniter 9, meanwhile open the stop valve 21 on gas inlet pipeline 22.
Step C: the temperature detecting catalytic combustion module 10.
Step D: after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, the flame on extinguish combustion device 8, and the catalytic combustion making to enter that nonflame is carried out in combustion gas in combustion chamber 30 when flowing through catalytic combustion module 10 surperficial.
In certain embodiments, in step D, after the temperature of catalytic combustion module 10 reaches and exceeds catalysis initiation temperature one design temperature threshold value, the flame on extinguish combustion device 8.By such setting, the temperature of catalytic combustion module 10 is made to be reduced to time of catalysis initiation temperature relatively long, for gas heater 100 provides comparatively plenty of time to well-off combustion gas in combustion chamber 30.This design temperature threshold value can be selected from the arbitrary temperature value in 50 DEG C ~ 600 DEG C; Be selected from the arbitrary temperature value in 300 DEG C ~ 500 DEG C further.
In embodiments more of the present utility model, step D comprises: after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, the ratio of the combustion gas entered in combustion chamber 30 and air is turned down to the first default proportion threshold value, to make the fray-out of flame on burner 8; After fray-out of flame on burner 8 and before the temperature of catalytic combustion module 10 drops to catalysis initiation temperature, the ratio of the combustion gas entered in combustion chamber 30 and air is heightened to the second default proportion threshold value, to make to enter nonflame is carried out in combustion gas in combustion chamber 30 catalytic combustion when flowing through catalytic combustion module 10 surperficial, and the heat of catalytic combustion release at least can make the temperature of catalytic combustion module 10 remain on more than described catalysis initiation temperature, wherein the second proportion threshold value is greater than the first proportion threshold value.
In certain embodiments, the first proportion threshold value can be selected in the number range of 0 ~ 1/39; Second proportion threshold value can be selected in the number range of 3/97 ~ 7/93.In a further embodiment, the first proportion threshold value can be selected in the number range of 0 ~ 1/50, and the second proportion threshold value can be selected in the number range of 1/24 ~ 3/47.
In other embodiments of the present utility model, step D comprises: after more than the catalysis initiation temperature that the temperature of catalytic combustion module 10 reaches default, close the stop valve 21 of gas heater 100, stop providing to combustion chamber 30 combustion gas to make the fray-out of flame on burner 8; Before the temperature of catalytic combustion module 10 drops to catalysis initiation temperature, open stop valve 21, continue to supply combustion gas to combustion chamber 30 after fray-out of flame on burner 8.Enter nonflame is then carried out in combustion gas in combustion chamber 30 catalytic combustion when flowing through catalytic combustion module 10 surperficial.
After step D, combustion heat value that can be corresponding to the requirement of leaving water temperature and inflow temperature, flow rate calculation combustion gas according to user, according to the ratio of combustion heat value regulating gas, when carrying out flameless combustion to make combustion gas, the heat of release can meet water demand.
It will be understood by those skilled in the art that in the gas heater 100 of the utility model embodiment, opening the object that the igniter 9 of gas heater 100 lights combustion gas is to heat catalytic combustion module 10.Reach after more than catalysis initiation temperature in the temperature of catalytic combustion module 10, can by fray-out of flame, the catalytic combustion of nonflame is carried out in then combustion gas.After flameless combustion is carried out in combustion gas in combustion chamber 30, flaming combustion can not be carried out by opening point firearm 9 more under normal circumstances, unless gas heater 100 breaks down, when making the temperature of catalytic combustion module 10 lower than catalysis initiation temperature, can again carry out flaming combustion with again by the heating temperatures of catalytic combustion module 10 to reaching more than catalysis initiation temperature.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present utility model is illustrate and described herein detailed, but, when not departing from the utility model spirit and scope, still can directly determine or derive other modification many or amendment of meeting the utility model principle according to content disclosed in the utility model.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or amendments.

Claims (7)

1. a gas heater, comprises combustion chamber and is arranged on the burner in described combustion chamber, characterized by further comprising:
Catalytic combustion module, to be arranged in described combustion chamber and to be positioned at above described burner, and when burning with the form of flame on described burner to utilize the combustion gas in described combustion chamber, the heat of release is heated;
Temperature sensor, for detecting the temperature of described catalytic combustion module; And
Pneumatic control system, be configured to after more than the catalysis initiation temperature that the temperature of described catalytic combustion module reaches default, make the fray-out of flame on described burner, thus make to enter nonflame is carried out in combustion gas in described combustion chamber catalytic combustion when flowing through described catalytic combustion module surperficial.
2. gas heater according to claim 1, is characterized in that,
Described pneumatic control system comprises for regulating the gas ratio valve entering combustion gas in described combustion chamber and AIR Proportional.
3. gas heater according to claim 1, also comprises for the gas inlet pipeline to described gas heater supply combustion gas; It is characterized in that,
Described pneumatic control system comprises and being arranged on described gas inlet pipeline for conducting and/or the stop valve disconnecting described gas inlet pipeline.
4. gas heater according to claim 1, is characterized in that,
Described catalytic combustion module comprises cellular catalyst carrier and is arranged on the catalyst in described catalyst carrier.
5. gas heater according to claim 1, is characterized in that,
Between described catalytic combustion module and described burner, there is preset pitch, to prevent the direct flame contact on described catalytic combustion module and described burner.
6. gas heater according to claim 1, characterized by further comprising igniter, for the combustion gas entered in described combustion chamber is lighted formation flame on described burner.
7. gas heater according to claim 1, characterized by further comprising heat exchanger, and it is arranged on the top of described catalytic combustion module, for absorbing the heat of fuel gas buring release to heat the water entered in described gas heater.
CN201520850801.7U 2015-10-29 2015-10-29 Gas water heater Active CN205137852U (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
CN106642646A (en) * 2015-10-29 2017-05-10 青岛经济技术开发区海尔热水器有限公司 Gas water heater and control method thereof
WO2018058928A1 (en) * 2016-09-30 2018-04-05 芜湖美的厨卫电器制造有限公司 Gas water heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106642646A (en) * 2015-10-29 2017-05-10 青岛经济技术开发区海尔热水器有限公司 Gas water heater and control method thereof
WO2018058928A1 (en) * 2016-09-30 2018-04-05 芜湖美的厨卫电器制造有限公司 Gas water heater

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