CN105823204A - Gas water heater - Google Patents

Gas water heater Download PDF

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Publication number
CN105823204A
CN105823204A CN201610317119.0A CN201610317119A CN105823204A CN 105823204 A CN105823204 A CN 105823204A CN 201610317119 A CN201610317119 A CN 201610317119A CN 105823204 A CN105823204 A CN 105823204A
Authority
CN
China
Prior art keywords
burner
gas
heat exchanger
catalyst
combustion
Prior art date
Application number
CN201610317119.0A
Other languages
Chinese (zh)
Inventor
寿利萍
梁国荣
黄官贤
但清海
Original Assignee
芜湖美的厨卫电器制造有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 芜湖美的厨卫电器制造有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Priority to CN201610317119.0A priority Critical patent/CN105823204A/en
Priority claimed from PCT/CN2016/091931 external-priority patent/WO2017193479A1/en
Publication of CN105823204A publication Critical patent/CN105823204A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/10Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. 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
    • F24H1/124Continuous-flow heaters, i.e. 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12Radiant burners
    • F23D14/18Radiant burners using catalysis for flameless combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates, burners, or heating elements
    • F24H9/1809Arrangement or mounting of grates, burners, or heating elements for water heaters
    • F24H9/1836Arrangement or mounting of grates, burners, or heating elements for water heaters fluid combustible heating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices or methods
    • F24H9/2007Arrangement or mounting of control or safety devices or methods for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices or methods for water heaters for heaters using fluid combustibles

Abstract

The invention discloses a gas water heater which comprises a shell, a premixing cavity shell, a burner, a heat exchanger, a preheating plate and a controller, wherein an accommodating cavity is defined inside the shell; the shell has an exhaust hole, a hot water outlet and a cold water inlet; the premixing cavity shell is arranged in the accommodating cavity; a mixing cavity is defined in the premixing cavity shell; the burner is arranged below the mixing cavity, and communicates with the mixing cavity; a catalyst for allowing smokeless catalytic combustion of a catalytic burner is arranged in the burner; the heat exchanger is arranged below the burner and is connected with the burner for absorbing heat generated from combustion of the burner; the heat exchanger has a water inlet and a water outlet; the water inlet communicates with the cold water inlet; the water outlet communicates with the hot water outlet; the preheating plate is connected with the burner for preheating the burner; and the controller is connected with the preheating plate for controlling the heating temperature of the preheating plate. According to the gas water heater provided by the embodiment of the invention, the generation of carbon monoxide and nitrogen oxide can be controlled from the source, and the utilization is safe and environment-friendly.

Description

Gas heater
Technical field
The present invention relates to technical field of water heaters, more particularly, to a kind of gas heater.
Background technology
The primary combustion mode that the burner of the gas heater in correlation technique uses is flaming combustion, energy utilization rate not only can be made to reduce, and can discharge substantial amounts of pollutant in combustion process, be the one of the main reasons causing haze weather to take place frequently.Therefore, traditional inefficient combustion mode is replaced to be considered as optimal combustion system with combustion system efficient, cleaning.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the present invention proposes a kind of gas heater, the simple in construction of this gas heater, each parts connect reliable, are convenient to mount and dismount, and fuel can carry out flameless catalytic combustion in burner, can avoid producing harmful gas, use safe and environment-friendly.
Gas heater according to embodiments of the present invention, including: housing, define receiving chamber in described housing, described housing has air vent, hot water outlet and cooling water inlet;Premixing cavity shell, described premixing cavity shell is located at described receiving intracavity, defines hybrid chamber in described premixing cavity shell;Burner, described burner is located at the lower section of described hybrid chamber, and described burner turns on described hybrid chamber, is provided with the described burner of catalysis and is smokelessly catalyzed the catalyst of burning in described burner;Heat exchanger, described heat exchanger is located at the lower section of described burner and is connected with described burner to absorb the heat that described burner combustion produces, described heat exchanger has water inlet and outlet, and described water inlet turns on described cooling water inlet, and described outlet turns on described hot water outlet;Pre-add hot plate, described pre-add hot plate is connected to preheat described burner with described burner;Controller, described controller be connected with described pre-add hot plate with control described pre-add hot plate heating-up temperature.
Gas heater according to embodiments of the present invention, by being provided for making the catalyst of fuel generation flameless catalytic combustion in burner, and setting preheats dish outside burner, pre-add hot plate is made can the catalyst in burner to be preheated, thus reduce the initiation temperature of fuel, fuel is made can fully to burn and deepen its degree of oxidation, both the reaction rate of fuel can have been improved, improve the utilization rate of fuel, the generation of harmful gas (carbon monoxide and nitrogen oxides) can be avoided again, from Sources controlling carbon monoxide and the generation of nitrogen oxides.The simple in construction of this gas heater, each parts connect reliable, are convenient to mount and dismount, and fuel can carry out flameless catalytic combustion in burner, greatly reduces the generation of harmful gas, uses safe and environment-friendly.
It addition, gas heater according to embodiments of the present invention, it is also possible to have a following additional technical characteristic:
According to one embodiment of present invention, also include blower fan and gas ratio valve, described blower fan is connected with described controller respectively with described gas ratio valve, described blower fan is located at the top of described hybrid chamber to carry air to described hybrid chamber, and described gas ratio valve is connected with described burner with to the described combustion gas of conveying of described hybrid chamber.
According to one embodiment of present invention, the pre-heating temperature of described burner is controlled at 300 DEG C-400 DEG C by described pre-add hot plate.
According to one embodiment of present invention, described pre-add hot plate uses Electric heating to heat.
According to one embodiment of present invention, described catalyst is precious metal material part or non-metallic material.
According to one embodiment of present invention, described catalyst is coated on the internal face of described burner.
According to one embodiment of present invention, being provided with catalyst carrier in described burner, described catalyst is coated in the surface of described catalyst carrier.
According to one embodiment of present invention, described catalyst carrier is ceramic honey comb.
According to one embodiment of present invention, temperature detector it is provided with in described burner to detect the heating-up temperature of described catalyst.
According to one embodiment of present invention, the heating-up temperature of described catalyst is T, if T > 400 DEG C, described controller controls described blower fan and is respectively started to carry described air and described combustion gas to described hybrid chamber with described gas ratio valve;If T > 700 DEG C, described controller controls described pre-add hot plate and stops heating.
According to one embodiment of present invention, in described hybrid chamber, it is provided with spoiler or damping piece, to be sufficiently mixed with described combustion gas by described air.
According to one embodiment of present invention, also including exhaust fume collecting hood, described exhaust fume collecting hood is connected with described heat exchanger and turns on described air vent, and described exhaust fume collecting hood is for the flue gas collected and discharge produces with described burner combustion.
According to one embodiment of present invention, also including buffering water pot, described buffering water pot is located at described receiving intracavity, and described buffering water pot connects in water (flow) direction between described outlet with described hot water outlet and respectively with described outlet and described hot water outlet.
According to one embodiment of present invention, described heat exchanger includes First Heat Exchanger and the second heat exchanger, and described First Heat Exchanger is located at the top of described second heat exchanger and between described burner and described second heat exchanger.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas heater according to embodiments of the present invention.
Reference:
100: gas heater;
10: housing;11: air inlet;12: air vent;13: accommodate chamber;
20: premixing cavity shell;
30: burner;31: temperature detector;
40: heat exchanger;40a: First Heat Exchanger;40b: the second heat exchanger;41: buffering water pot;
50: pre-add hot plate;
70: blower fan;
80: gas ratio valve;
90: exhaust fume collecting hood;91: condensed water box.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
The primary combustion mode that the burner of gas heater uses is flaming combustion: combustion gas and air mix in burner the most in advance, but respectively they are sent in combustor, and burn on combustor inner edge mixing limit, the flame of this kind of combustion system burning generation is longer, and have distinct profile, belong to diffusion combustion.Flaming combustion is higher due to activation energy, and burning velocity is slow, and incomplete combustion can cause the thermal efficiency to decline.Additionally, the gas radiation amount of flaming combustion flame is less, with heat convection for main heat transfer mode, energy utilization rate can be reduced.Furthermore, due to different parts and the difference of air contact of burning, the completeness of burning and temperature can be caused the most different.Specifically, in high-temperature region, owing to temperature is high, the oxygen in air and nitrogen reaction is caused to generate nitrogen oxides pollution thing;Low-temperature space, due to incomplete combustion, can produce the harmful substances such as carbon monoxide, Hydrocarbon and tar.
To this end, the present invention proposes a kind of gas heater 100, the simple in construction of this gas heater 100, each parts connect reliable, are convenient to mount and dismount, and fuel can carry out flameless catalytic combustion in burner 30, can avoid producing harmful gas, use safe and environment-friendly.
1 specifically describe gas heater 100 according to embodiments of the present invention below in conjunction with the accompanying drawings.
Gas heater 100 according to embodiments of the present invention includes housing 10, premixing cavity shell 20, burner 30, heat exchanger 40, pre-add hot plate 50 and controller (not shown).nullSpecifically,Receiving chamber 13 is defined in housing 10,Housing 10 has air vent 12、Hot water outlet (not shown) and cooling water inlet (not shown),Premixing cavity shell 20 is located in receiving chamber 13,Hybrid chamber is defined in premixing cavity shell 20,Burner 30 is located at the lower section of hybrid chamber,Burner 30 turns on hybrid chamber,It is provided with catalytic burner 30 in burner 30 and is smokelessly catalyzed the catalyst of burning,Heat exchanger 40 is located at the lower section of burner 30 and the heat produced with absorption burner 30 burning that is connected with burner 30,Heat exchanger 40 has water inlet and outlet,Water inlet turns on cooling water inlet,Outlet turns on hot water outlet,Pre-add hot plate 50 is connected to preheat burner 30 with burner 30,Controller be connected with pre-add hot plate 50 with control pre-add hot plate 50 heating-up temperature.
In other words, this gas heater 100 is mainly made up of housing 10, premixing cavity shell 20, burner 30, heat exchanger 40, pre-add hot plate 50 and controller.Wherein, housing 10 vertically (above-below direction as shown in Figure 1) extends, receiving chamber is defined in housing 10, housing 10 has the air vent 12 of the air inlet 11 of fuel, waste gas, the hybrid chamber for accommodating air and combustion gas is defined in premixing cavity shell 20, premixing cavity shell 20 has and fuel gas inlet, air intlet and the mixed gas outlet of hybrid chamber conducting, and burner 30 connects with premixing cavity shell 20 so that fuel in hybrid chamber burns in can entering burner 30.
Specifically, it is provided with catalyst in burner 30, this catalyst can reduce the initiation temperature of fuel, and deepen its degree of oxidation, make Organic substance that flameless combustion to occur under the initiation temperature told somebody what one's real intentions are, and oxidized is decomposed into end product carbon dioxide and the water of burning, meanwhile, discharge substantial amounts of heat, the reactant molecule of fuel can be enriched in the surface of catalyst, improve reaction rate, improve the utilization rate of fuel, this catalyst can effectively suppress the generation of nitrogen oxides, colleague's catalysis ratio of combustion is more complete, reduce the content of carbon monoxide in flue gas, thus effectively reduce the discharge of harmful gas.Pre-add hot plate 50 is connected burner 30 is preheated to uniform temperature with burner 30, pre-add hot plate 50 can be preheated to uniform temperature to the catalyst in burner 30, so that the mixed gas of air and combustion gas can occur flameless combustion in entering burner 30, reduce the harmful gas that fuel produces when ignition.
Heat exchanger 40 is connected with burner 30, when burner 30 works, and the heat that the water in heat exchanger 40 can produce with absorption burner 30, it is consequently formed hot water and uses for user.Such as, the amount of heat that burner 30 produces can directly carry out heat exchange with the surface of heat exchanger 40, thus reaches the purpose of the water heating in heat exchanger 40, specifically, heat exchanger 40 is provided with fin, the fin on high-temperature flue gas impingement heat transfer device 40, carries out heat exchange.Certainly, the present invention is not limited to this, the water pipe that multiple circulation water are set also can be had in heat exchanger 40, the outside of heat exchanger 40 is provided with the water inlet pipe with cross current and outlet pipe, system can inject cold water by water inlet pipe (not shown) to the water pipe of heat exchanger 40, fuel carries out burning in burner 30 can produce high-temperature flue gas, in high-temperature flue gas enters water heater and carry out heat exchange with the water in water pipe, thus reach the purpose of the water heating in heat exchanger 40, hot water in last heat exchanger 40 uses for user from outlet pipe (not shown) discharges gas heater 100.
nullSpecifically,As shown in Figure 1,In the present embodiment,Premixing cavity shell 20、Burner 30、Heat exchanger 40、Pre-add hot plate 50、Blower fan 70、Gas ratio valve 80 is each provided in the receiving chamber 13 of housing 10,Wherein,Blower fan 70 and heat exchanger 40 it is respectively equipped with above and below burner 30,Premixing cavity shell 20 it is provided with between blower fan 70 and burner 30,Pre-add hot plate 50 is connected to preheat the catalyst in burner 30 with burner 30,When gas heater 100 works,Air and combustion gas respectively enter hybrid chamber mix homogeneously,Then fuel from top to bottom flows、Entrance is positioned at the burner 30 below hybrid chamber and burns,The high-temperature flue gas that burner 30 produces carries out heat exchange with the cold water in water pipe in from top to bottom entering heat exchanger 40,Thus realize adding the purpose of hot water,In the process,The operation of blower fan 70 can be to preheat dish 50 to provide direction to support burner 30 preheating.
Thus, gas heater 100 according to embodiments of the present invention, by being provided for making the catalyst of fuel generation flameless catalytic combustion in burner 30, and preheat dish 50 outer setting of burner 30, pre-add hot plate 50 is made can the catalyst in burner 30 to be preheated, thus reduce the initiation temperature of fuel, fuel is made can fully to burn and deepen its degree of oxidation, both the reaction rate of fuel can have been improved, improve the utilization rate of fuel, the generation of harmful gas (carbon monoxide and nitrogen oxides) can be avoided again, from Sources controlling carbon monoxide and the generation of nitrogen oxides.The simple in construction of this gas heater 100, each parts connect reliable, are convenient to mount and dismount, and fuel can carry out flameless catalytic combustion in burner 30, greatly reduces the generation of harmful gas, uses safe and environment-friendly.
nullWhen gas heater 100 works,Blower fan 70 and gas ratio valve 80 carry air and combustion gas respectively in hybrid chamber,After air and combustion gas carry out being sufficiently mixed uniformly in hybrid chamber,Entrance is positioned at the burner 30 below hybrid chamber and burns,Owing to the catalyst in burner 30 is preheated by pre-add hot plate 50,Therefore,Fuel can carry out flameless catalytic combustion in entering burner 30,In catalyticing combustion process,The effect of catalyst is the initiation temperature reducing fuel,And deepen its degree of oxidation,Make Organic substance that flameless combustion to occur under the conditions of relatively low initiation temperature,And oxidation Decomposition is burning end product carbon dioxide and water,Discharge amount of heat,Make reactant molecule be enriched in catalyst surface simultaneously,To improve reaction rate、Improve fuel availability,It is greatly reduced the harmful gas that fuel combustion produces.
Compared with the gas heater using flaming combustion in correlation technique, the simple in construction of this gas heater 100, each parts connect reliable, rationally distributed, it is convenient to mount and dismount, by arranging catalyst in burner 30, and arrange and burner 30 can be carried out pre-warmed pre-add hot plate 50, the catalysis ignition temperature of fuel can be reduced, effectively suppress the generation of nitrogen oxides, the catalysis ratio of combustion of fuel is relatively complete simultaneously, can reduce the content of carbon monoxide in flue gas, thus effectively reduce the discharge of harmful gas.This gas heater 100 both can make fuel burn completely, improve the efficiency of combustion of fuel, thus improve the efficiency of heating surface of gas heater 100, the discharge of harmful gas (such as carbon monoxide and nitrogen oxides) can be reduced again, use safe and environment-friendly.
Wherein, according to one embodiment of present invention, gas heater 100 also includes blower fan 70 and gas ratio valve 80, blower fan 70 is connected with controller respectively with gas ratio valve 80, blower fan 70 is located at the top of hybrid chamber to carry air to hybrid chamber, thus the flowing for air provides power, and gas ratio valve 80 is connected with burner 30 with to hybrid chamber delivery of fuel gas, ensure the fuel supply of gas heater 100, thus ensure the normal work of gas heater 100.
Wherein, the pre-heating temperature of burner 30 is controlled at 300 DEG C-400 DEG C by pre-add hot plate 50.That is, before fuel logical in burner 30, controller controls pre-add hot plate 50 and preheats burner 30, make the catalyst warm-up in burner 30 to 300 DEG C-400 DEG C, the initiation temperature of the combustion gas being finally lowered in burner 30, make fuel that flameless combustion can occur, reduce the generation of harmful gas.
Preferably, according to one embodiment of present invention, pre-add hot plate 50 uses Electric heating to heat.Such as, pre-add hot plate 50 can use Electromagnetic Heating, resistance electrothermal etc. can also be used, by pre-add hot plate 50 is connected with burner 30, burner 30 can be preheated, i.e. the catalyst in burner 30 can be preheated, thus reduce the initiation temperature of fuel, thus deepen the degree of oxidation of fuel, make fuel that flameless combustion to occur under the conditions of relatively low initiation temperature, reduce the generation of harmful gas, more environmentally-friendly.
Alternatively, according to one embodiment of present invention, catalyst is precious metal material part or non-metallic material.In some specific embodiments of the present invention, catalyst is coated on the internal face of burner 30.Specifically, the inner surface of burner 30 is coated with layer of precious metal, combustion gas enters in burner 30, combustion gas can be catalyzed by the noble metal on the inner surface of burner 30, under noble metal effect, the initiation temperature of fuel can be reduced to 350 DEG C, significantly reduce burner 30 burner temperature, the generation of suppression nitrogen oxides, catalyst can make Oxidation of Carbon Monoxide become carbon dioxide simultaneously, reduces the purpose of noxious gas emission with this.
In other specific embodiments of the present invention, being provided with catalyst carrier in burner 30, catalyst is coated in the surface of catalyst carrier.Preferably, catalyst carrier is ceramic honey comb.High temperature resistant 1200 DEG C, it is ensured that the reliability of the catalyst in burner 30, thus increase the service life.When the mixed gas of air with combustion gas enters in burner 30, fuel can be catalyzed by the catalyst in catalyst carrier, make fuel generation flameless catalytic combustion, compared with the directly burning in correlation technique, the initiation temperature of the fuel in this burner 30 is relatively low, can effectively suppress the generation of nitrogen oxides, the catalysis ratio of combustion simultaneously making fuel is relatively complete, the content of the carbon monoxide in reduction flue gas.
In some specific embodiments of the present invention, it is provided with temperature detector 31 in burner 30 to detect the heating-up temperature of catalyst.Specifically, the heating-up temperature of catalyst is T, if T > 400 DEG C, controller controls blower fan 70 and is respectively started with to hybrid chamber conveying air and combustion gas with gas ratio valve 80;If T > 700 DEG C, controller controls pre-add hot plate 50 and stops heating.
Specifically, controller output signal fan 70 and gas ratio valve 80, blower fan 70 runs after receiving signal, it is provided that air and power;Gas ratio valve 80 is opened after receiving signal, injection region (usually Venturi way) is set in blast tube, after blower fan 70 runs, injection gas, combustion gas is provided for burning, combustion gas is sufficiently mixed in entering hybrid chamber with air, then the catalyst in burner 30 and burner 30 is preheated by pre-add hot plate 50, owing to catalyst is preheated by pre-add hot plate 50 the most, when the mixture of gas/air enters in burner 30, fuel realizes flameless catalytic combustion under the effect of catalyst, burning produces high-temperature flue gas can carry out heat exchange with heat exchanger 40, the water flowed in transferring heat to heat exchanger 40, water heater is made to produce hot water, high-temperature flue gas and heat exchanger 40 are after heat exchanges, temperature reduces, finally get rid of outside gas heater 100.
Needing exist for explanation, owing to fuel occurs flameless catalytic combustion, this catalysis burning to be self-sustaining reactions in burner 30, as long as when temperature reaches more than 700 DEG C, and have gas/air to supply, catalysis burning just can persistently be carried out.
Thus, fuel in this gas heater 100 carries out flameless catalytic combustion, burning relaxes, can be greatly reduced combustion noise, combustion process safety simultaneously is higher, furthermore, catalyst in burner 30 can reduce the reaction temperature maintained required for combustion reaction, save the combustion reaction consumption to fuel combustion energy itself, it is achieved carbon monoxide and the low emission of nitrogen oxides, energy-conserving and environment-protective.
Advantageously, according to one embodiment of present invention, spoiler or damping piece (not shown) it are provided with in hybrid chamber, to be sufficiently mixed with combustion gas by air.Specifically, the burner 30 of gas heater 100 is before work, system needs all to premix air in hybrid chamber with combustion gas, when blower fan 70 and gas ratio valve 80 are respectively to hybrid chamber input air and combustion gas, spoiler in hybrid chamber and damping piece can upset the flow direction of air and combustion gas, so that air mixes sufficiently uniformly with combustion gas, it is ensured that the flameless catalytic combustion of fuel.
Additionally, according to one embodiment of present invention, gas heater 100 also includes exhaust fume collecting hood 90, and exhaust fume collecting hood 90 is connected with heat exchanger 40 and turns on air vent 12, flue gas, for the flue gas collected and discharge produces with burner 30 burning, is finally arranged to outdoor by exhaust fume collecting hood 90.With reference to Fig. 1, in the present embodiment, exhaust fume collecting hood 90 is located at the lower section of heat exchanger 40, heat exchanger 40 has smoke inlet and outlet flue, the smoke inlet of heat exchanger 40 connects with burner 30, the outlet flue of heat exchanger 40 connects with exhaust fume collecting hood 90, fuel in burner 30 carries out the high-temperature flue gas of flameless catalytic combustion generation and enters in heat exchanger 40 by smoke inlet, after the water of the flowing in high-temperature flue gas and heat exchanger 40 carries out heat exchange, it is discharged in exhaust fume collecting hood 90 from outlet flue, discharges the external world finally by the smoke exhaust pipe on exhaust fume collecting hood 90.
Wherein, gas heater 100 also includes buffering water pot 41, and buffering water pot 41 is located in receiving chamber 13, and buffering water pot 41 connects in water (flow) direction between outlet with hot water outlet and respectively with outlet and hot water outlet.With reference to Fig. 1, buffer in water pot 41 is located at the receiving chamber 13 of housing 10 and be positioned at the top of heat exchanger 40, cold water in heat exchanger 40 after heat exchange, enter buffering water pot 41 in carry out pressure release, carrying out along with heat transfer process, hot water in buffering water pot 41 is gradually increased, if user needs hot water, can be opened by valve, take hot water, thus provide the user enough domestic waters.Being additionally provided with switch electromagnetic valve/electric T-shaped valve and condensed water box 91 in housing 10, switch electromagnetic valve/electric T-shaped valve can realize the switching in water route, and condensed water box 91 can change thermogenetic condensed water with collection system, finally gets rid of outside gas heater 100.
In some specific embodiments of the present invention, heat exchanger 40 includes that First Heat Exchanger 40a and the second heat exchanger 40b, First Heat Exchanger 40a are located at the top of the second heat exchanger 40b and between burner 30 and the second heat exchanger 40b.The high-temperature flue gas that fuel in burner 30 produces after carrying out flameless catalytic combustion can respectively enter in First Heat Exchanger 40 and the second heat exchanger 40, heat exchange is carried out the most respectively with the cold water in the water pipe in First Heat Exchanger 40a and the second heat exchanger 40b, make First Heat Exchanger 40a and the second heat exchanger 40b produce hot water respectively to use for user, by arranging two heat exchangers 40 in housing 10, the efficiency of heating surface of gas heater 100 can be improved, ensure user can water demand in real time, Consumer's Experience is more preferable.
Other compositions of gas heater 100 according to embodiments of the present invention and operation are the most all known, are not detailed herein.
In describing the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumferential " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral;Can be mechanically connected, it is also possible to be electrical connection or each other can communication;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.

Claims (14)

1. a gas heater, it is characterised in that including:
Housing, defines receiving chamber in described housing, described housing has air vent, hot water outlet and cooling water inlet;
Premixing cavity shell, described premixing cavity shell is located at described receiving intracavity, defines hybrid chamber in described premixing cavity shell;
Burner, described burner is located at the lower section of described hybrid chamber, and described burner turns on described hybrid chamber, is provided with the described burner of catalysis and is smokelessly catalyzed the catalyst of burning in described burner;
Heat exchanger, described heat exchanger is located at the lower section of described burner and is connected with described burner to absorb the heat that described burner combustion produces, described heat exchanger has water inlet and outlet, and described water inlet turns on described cooling water inlet, and described outlet turns on described hot water outlet;
Pre-add hot plate, described pre-add hot plate is connected to preheat described burner with described burner;
Controller, described controller be connected with described pre-add hot plate with control described pre-add hot plate heating-up temperature.
Gas heater the most according to claim 1, it is characterized in that, also include blower fan and gas ratio valve, described blower fan is connected with described controller respectively with described gas ratio valve, described blower fan is located at the top of described hybrid chamber to carry air to described hybrid chamber, and described gas ratio valve is connected with described burner with to the described combustion gas of conveying of described hybrid chamber.
Gas heater the most according to claim 1, it is characterised in that the pre-heating temperature of described burner is controlled at 300 DEG C-400 DEG C by described pre-add hot plate.
Gas heater the most according to claim 1, it is characterised in that described pre-add hot plate uses Electric heating to heat.
Gas heater the most according to claim 1, it is characterised in that described catalyst is precious metal material part or non-metallic material.
Gas heater the most according to claim 5, it is characterised in that described catalyst is coated on the internal face of described burner.
Gas heater the most according to claim 5, it is characterised in that be provided with catalyst carrier in described burner, described catalyst is coated in the surface of described catalyst carrier.
Gas heater the most according to claim 7, it is characterised in that described catalyst carrier is ceramic honey comb.
Gas heater the most according to claim 2, it is characterised in that be provided with temperature detector in described burner to detect the heating-up temperature of described catalyst.
Gas heater the most according to claim 9, it is characterized in that, the heating-up temperature of described catalyst is T, if T > 400 DEG C, described controller controls described blower fan and is respectively started to carry described air and described combustion gas to described hybrid chamber with described gas ratio valve;If T > 700 DEG C, described controller controls described pre-add hot plate and stops heating.
11. gas heaters according to claim 1, it is characterised in that be provided with spoiler or damping piece in described hybrid chamber, to be sufficiently mixed described air with described combustion gas.
12. gas heaters according to claim 1, it is characterised in that also include exhaust fume collecting hood, described exhaust fume collecting hood is connected with described heat exchanger and turns on described air vent, and described exhaust fume collecting hood is for the flue gas collected and discharge produces with described burner combustion.
13. gas heaters according to claim 1, it is characterized in that, also include buffering water pot, described buffering water pot is located at described receiving intracavity, and described buffering water pot connects in water (flow) direction between described outlet with described hot water outlet and respectively with described outlet and described hot water outlet.
14. gas heaters according to claim 1, it is characterised in that described heat exchanger includes First Heat Exchanger and the second heat exchanger, described First Heat Exchanger is located at the top of described second heat exchanger and between described burner and described second heat exchanger.
CN201610317119.0A 2016-05-13 2016-05-13 Gas water heater CN105823204A (en)

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CN106287708A (en) * 2016-09-30 2017-01-04 芜湖美的厨卫电器制造有限公司 Catalytic burner and the gas heater with it
CN106524479A (en) * 2016-09-30 2017-03-22 芜湖美的厨卫电器制造有限公司 Gas water heater
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CN106287708A (en) * 2016-09-30 2017-01-04 芜湖美的厨卫电器制造有限公司 Catalytic burner and the gas heater with it
CN106524479A (en) * 2016-09-30 2017-03-22 芜湖美的厨卫电器制造有限公司 Gas water heater
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CN110081613A (en) * 2019-04-15 2019-08-02 青岛经济技术开发区海尔热水器有限公司 A kind of control method and gas heater of gas heater

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