CN206160440U - Gas water heater - Google Patents

Abstract

The utility model discloses a gas water heater, include: it has the chamber of holding to prescribe a limit to in the casing, casing, and the casing has into water interface and outlet port, catalytic burner, catalytic burner establish and are holding the intracavity, and it has prechamber to inject in the catalytic burner, and catalytic burner has air inlet and the gas outlet that switches on with prechamber, and gas outlet department is equipped with the catalyst converter, and the catalyst converter is constructed sustained combustion when the temperature exceedes the predetermined temperature and has gas and air supply, fan, fan and air inlet switch on with to prechamber conveying air, gas proportional valve, gas proportional valve's export and air inlet switch on in order to carry the gas to prechamber, heat exchanger, heat exchanger are established and are linked to each other in order to absorb the heat that burner produced in the top of combustor and with the combustor. According to the utility model discloses a gas water heater, simple structure, compactness, small, carbon monoxide in the flue gas after the burning and nitrogen oxide's content are less, energy -concerving and environment -protective, and noise at work is low.

Description

Gas heater

Technical field

The utility model is related to technical field of water heaters, more particularly, to a kind of gas heater.

Background technology

For flaming combustion, i.e., combustion gas and air are not carried out in advance the primary combustion mode that burner is adopted in burner Mixing, but combustion gas and air are sent in combustion chamber respectively, and burn in mixing wherein, the flame of burning generation compared with It is long, and have distinct profile, because the activation energy of flaming combustion is higher, burning velocity is slow, incomplete combustion, under causing the thermal efficiency Drop.Additionally, the gas radiation amount of flaming combustion flame is less, and it is mainly main heat transfer type with heat convection, it is easily reduced The utilization rate of the energy.

Furthermore, due to different parts and the difference of air contact burnt, it is easily caused the completeness and temperature of burning Also it is different, in high-temperature region, because temperature is higher, it is easily caused the generation of NOx pollutants；In low-temperature space, due to burning not Completely, the harmful substances such as carbon monoxide, hydrocarbon and tar are easily produced.

Utility model content

The utility model is intended at least to solve to a certain extent one of technical problem in correlation technique.For this purpose, this reality The simple structure of the gas heater, compact with a kind of gas heater of new proposition, small volume, operating noise is low, using peace Entirely, energy-conserving and environment-protective, Consumer's Experience is good.

According to gas heater of the present utility model, including：Housing, defines accommodating chamber, the housing in the housing With water inlet interface and water outlet mouthpiece；Catalytic burner, the catalytic burner is located in the accommodating chamber, the catalysis burning Premix chamber is defined in device, the catalytic burner has the air inlet with premix chamber conducting and gas outlet, the outlet Catalyst converter is provided with mouthful, the catalyst converter is configured to when temperature exceedes predetermined temperature and has combustion gas and air persistently to fire when supplying Burn；Blower fan, the blower fan turns on to convey air to the premix chamber with the air inlet；Gas ratio valve, the combustion gas ratio The outlet of example valve is turned on to the premix chamber delivery of fuel gas with the air inlet；Heat exchanger, the heat exchanger is located at the combustion The top of burner and the heat produced with the absorption burner combustion that is connected with the burner, the heat exchanger has water inlet Mouth and delivery port, the water inlet is turned on the water inlet interface, and the delivery port is turned on the water outlet mouthpiece.

Simple structure, compact according to gas heater of the present utility model, each part connection is reliable, small volume, combustion gas and Air carries out catalysis burning in catalytic burner, and the content of the carbon monoxide in flue gas and nitrogen oxides after burning is less, Energy-conserving and environment-protective, using safety, and combustion gas relaxes with the mixture combustion of air, and the work for advantageously reducing gas heater is made an uproar Sound.The simple structure of the gas heater, compact, each part connection reliability, are convenient to mount and dismount, and operating noise is low, using safety, section Can be environmentally friendly, Consumer's Experience is good.

According to one embodiment of the present utility model, distribution member is covered with the air inlet, is had in the distribution member Dispensing orifice that is multiple arranged spaced apart and turning on premix chamber.

According to one embodiment of the present utility model, the dispensing orifice is arranged in multi-turn, and often circle includes dividing described in multiple edges The circumferentially-spaced dispensing orifice for opening arrangement of accessory.

According to one embodiment of the present utility model, multiple dispensing orifices are arranged in emitting shape.

According to one embodiment of the present utility model, catalytic burner includes：Burner framework, in the burner frame body The premix chamber is defined, the air inlet and gas outlet are located in the burner framework；Catalyst converter, the catalyst converter includes Matrix and coating catalyst on the matrix, and it is integrated with preheating section on the catalyst converter.

According to one embodiment of the present utility model, the periphery edge of the distribution member is provided with multiple lugs, the distribution member It is detachably connected with the burner framework by multiple lugs.

According to one embodiment of the present utility model, catalytic burner also includes：Catalyst converter base, the catalyst converter base It is located in the burner framework and at the gas outlet；Cover on catalyst converter, housing is located at described urging on the catalyst converter Change on device base and limit between catalyst converter base the installation cavity for accommodating catalyst converter, on the catalyst converter lid have with The opening of the installation cavity conducting.

According to one embodiment of the present utility model, the catalyst converter base is formed along the circumferentially extending of the gas outlet Annular, covers on the catalyst converter and is fitted with the catalyst converter base, sets between the catalyst converter base and the burner framework There is adiabatic sealing gasket.

According to one embodiment of the present utility model, the position of the neighbouring described gas outlet of the burner framework is provided with a little Fiery pin or inductive needle.

According to one embodiment of the present utility model, described matrix is foam silicon carbide ceramics, and the catalyst is modified The mixture of aluminum oxide, platinum, palladium and iron oxide and/or iron oxide.

Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below In become obvious, or by it is of the present utility model practice recognize.

Description of the drawings

Fig. 1 is the stereogram according to the catalytic burner of the utility model embodiment in an angle；

Fig. 2 is the stereogram according to the catalytic burner of the utility model embodiment in another angle；

Fig. 3 is the sectional view of the catalytic burner according to the utility model embodiment；

Fig. 4 is the sectional view in another direction of the catalytic burner according to the utility model embodiment；

Fig. 5 is the structural representation of the distribution member of the catalytic burner according to the utility model embodiment；

Fig. 6 is the structural representation of the gas heater according to the utility model embodiment.

Reference：

A：Gas heater；

100：Catalytic burner；

11：Burner framework；

1101：Premix chamber；1102：Air inlet；1103：Gas outlet；1104：Installing port；

12：Catalyst converter；

13：Catalyst converter base；

14：Cover on catalyst converter；

15：Distribution member；151：Dispensing orifice；152：Lug；

16：Sealing gasket；

200：Housing；21：Accommodating chamber；22：Water inlet interface；23：Water outlet mouthpiece；

300：Blower fan；

400：Gas ratio valve；

500：Heat exchanger；

600：Exhaust fume collecting hood；61：Exhaust opening.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality The restriction of type.

Below in conjunction with the accompanying drawings 1 to Fig. 6 specifically describes the gas heater A according to the utility model embodiment.

Housing 200, catalytic burner 100, blower fan 300, combustion are included according to the gas heater A of the utility model embodiment Gas proportioning valve 400 and heat exchanger 500.Specifically, accommodating chamber 21 is defined in housing 200, housing 200 has water inlet interface 22 With water outlet mouthpiece 23, catalytic burner 100 is located in accommodating chamber 21, and in catalytic burner 100 premix chamber 1101 is defined, and is catalyzed Burner 100 has the air inlet 1102 with the conducting of premix chamber 1101 and gas outlet 1103, and at gas outlet 1103 catalyst converter is provided with 12, catalyst converter 12 is configured to the sustained combustion when temperature exceedes predetermined temperature and has combustion gas and air to supply.

Further, blower fan 300 turns on to convey air, gas ratio valve 400 to premix chamber 1101 with air inlet 1102 Outlet and air inlet 1102 turn on to the delivery of fuel gas of premix chamber 1101, heat exchanger 500 be located at the top of burner and with combustion Burner is connected with the heat of absorption burner burning generation, and heat exchanger 500 has water inlet and delivery port, and water inlet connects with water inlet Mouth 22 is turned on, and delivery port is turned on water outlet mouthpiece 23.

Specifically, as shown in fig. 6, gas heater A is mainly by housing 200, catalytic burner 100, blower fan 300, combustion gas Proportioning valve 400 and heat exchanger 500 are constituted.Wherein, vertically (above-below direction as shown in Figure 6) extends housing 200, housing The accommodating chamber 21 for extending along its length is defined in 200, the bottom of housing 200 is provided with water inlet interface 22 and water outlet mouthpiece 23, the bottom in accommodating chamber 21 is provided with blower fan 300, and catalytic burner 100 is located at the top of blower fan 300 and catalytic burner 100 Air inlet 1102 and blower fan 300 outlet, gas ratio valve 400 be located at the side of blower fan 300 and with air inlet 1102 Conducting, heat exchanger 500 is located at the top of catalytic burner 100 and is connected with catalytic burner 100, and heat exchanger 500 has and enters The water inlet and the delivery port with the conducting of water outlet mouthpiece 23 of the conducting of water interface 22.

Blower fan 300 provides air, and gas ratio valve 400 provides combustion gas, then carries out injection through venturi pre-mixed configuration After premix, the mixture of combustion gas and air enters catalytic burner 100, after distribution member 15 is distributed, reaches catalytic burner On 100 catalyst converter 12, burnt after pin mark fire of lighting a fire, the high-temperature flue gas for producing that burn carry out heat with heat exchanger 500 Amount is exchanged, so as to the water in heating heat exchanger 500, it is ensured that flow out gas heater A is hot water, the cigarette after heat exchange Gas discharges outdoor Jing after the collection of exhaust fume collecting hood 600, by exhaust opening 61.

Wherein, combustion process of the mixture of combustion gas and air on catalyst converter 12 is：Flaming combustion is first carried out after igniting, Catalyst converter 12 is preheated, after the temperature of catalyst converter 12 reaches predetermined temperature, changes the flow of combustion gas and air, make burning Mode switches to catalysis burning.

Thus, according to the gas heater A of the utility model embodiment, simple structure, compact, each part connection reliability, Small volume, combustion gas and air carry out catalysis burning in catalytic burner 100, the carbon monoxide in flue gas and nitrogen oxygen after burning The content of compound is less, energy-conserving and environment-protective, and using safety, and combustion gas relaxes with the mixture combustion of air, advantageously reduces combustion The operating noise of gas water heater A.The simple structure of gas heater A, compact, each part connection reliability, are convenient to mount and dismount, volume Little, operating noise is low, and using safety, energy-conserving and environment-protective, Consumer's Experience is good.

Explanation is needed exist for, due to the combustion gas in catalysis combustion flame low even flameless combustion, with correlation technique Water heater is compared, and the combustion chamber height of gas heater A can decline, and so as to reduce whole machine height, makes gas heater A more It is compact.

Wherein, as shown in Figure 1 to Figure 3, catalytic burner 100 includes burner framework 11 and catalyst converter 12.Specifically, Define premix chamber 1101 in burner framework 11, burner framework 11 have the air inlet 1102 with the conducting of premix chamber 1101 and Gas outlet 1103, catalyst converter 12 is located in burner framework 11 and at gas outlet 1103, and catalyst converter 12 is configured to when temperature Sustained combustion when degree exceedes predetermined temperature and has combustion gas and air to supply.

In other words, the catalytic burner 100 is mainly made up of burner framework 11 and catalyst converter 12, wherein, burner frame Vertically (above-below direction as shown in figures 1 and 3) extends body 11, top and bottom is defined in burner framework 11 and is opened The premix chamber 1101 opened, the lower ending opening formation air inlet 1102 of burner framework 11, and the upper end open of burner framework 11 Form gas outlet 1103.

Further, catalyst converter 12 is located at the gas outlet 1103 of burner framework 11, and catalyst converter 12 and burner frame The internal face of body 11 is connected, and for example, catalyst converter 12 can form structure corresponding with the shape of gas outlet 1103, then be connected to On the internal face of burner framework 11, so as to ensure being fixedly connected for catalyst converter 12 and burner framework 11, catalyst converter 12 can be with Netted, alveolate texture is formed, when catalytic burner 100 works, air and combustion gas enter premix chamber by air inlet 1102 It is sufficiently mixed in 1101, then the catalyst converter 12 at gas outlet 1103 and is preheated, in the effect of catalyst converter 12 Under, combustion gas and air burning catalysis burning, so as to reduce the discharge of carbon monoxide and nitrogen oxides.

Thus, according to the catalytic burner 100 of the utility model embodiment, simple structure, each part connection is reliable, with phase Flaming combustion mode in the technology of pass is compared, and the catalytic burner 100 is using catalysis burning, it is ensured that combustion gas is fully burnt, More energy-conserving and environment-protective, not only can reduce the discharge of carbon monoxide and nitrogen oxides, and burn relax, combustion noise it is low, peace Full property is higher.The simple structure of the catalytic burner 100, compact, small volume, using safety, energy-conserving and environment-protective, Consumer's Experience is good.

Wherein, according to one embodiment of the present utility model, catalyst converter 12 includes matrix and the catalysis being coated on matrix Preheating section is integrated with agent, and catalyst converter 12.

That is, catalyst converter 12 is mainly made up of matrix and catalyst, matrix can form netted, alveolate texture, And preheating section is integrated with the position of the neighbouring premix chamber 1101 of matrix, the catalyst needed for catalysis burning is located at the interior of matrix On surface, it is ensured that the gaseous mixture of combustion gas and air can burn abundant, uniform when catalyst converter 12.

Specifically, combustion gas first passes around after fully mixed the preheating on catalyst converter 12 with air in premix chamber 1101 Section, in the presence of preheating section, the temperature of catalyst gradually rises, and makes catalyst reach preset temperature (initiation temperature), so as to Make catalyst give full play to catalytic function, realize the catalysis burning of combustion gas.

Due to being catalyzed the low even flameless combustion of combustion flame, compared with the gas heater in correlation technique, will preheat Section is integrated in the volume that can reduce burner on catalyst converter 12, makes the combustion chamber height of gas heater A and can decline, from And whole machine height is reduced, and make gas heater A more compact, realize the light-weighted purpose of burner.

Furthermore, it is ensured that catalyst can reach initiation temperature, so that catalyst can play catalytic function, realize combustion The catalysis burning of gas, compared with the flaming combustion mode in correlation technique, the catalytic burner 100 adopts catalysis combustion system, The low emission of carbon monoxide and nitrogen oxides not only can be realized, security is higher, and combustion noise, energy-saving ring can be reduced Protect, Consumer's Experience is good.

Alternatively, according to one embodiment of the present utility model, matrix is foam silicon carbide ceramics, and catalyst is modified oxygen Change the mixture of aluminium, platinum, palladium and iron oxide and/or iron oxide.

The matrix processed using foam silicon carbide ceramics, not only contributes to the attachment of catalyst, so as to increase catalysis The bond area of agent, and then improve the Catalytic Combustion Effect of combustion gas, but also can with when combustion gas and air it is further when burning It is sufficiently mixed, it is ensured that combustion gas can sufficiently and uniformly burn, furthermore, foam silicon carbide ceramics high temperature resistant, intensity is high, Ke Yishi Existing naked light burning.

Further, catalyst is mainly made up of modified aluminas, active component and auxiliary agent, wherein, active component can Think platinum, palladium, auxiliary agent can be iron oxide, iron oxide, catalyst is made by bonding agent and be coated in after slurries on matrix, protect Card combustion gas can be fully contacted with the gaseous mixture of air with catalyst, so that the combustion gas in each region of catalyst converter 12 can be with Homogenous combustion, improves the Catalytic Combustion Effect of combustion gas.

Advantageously, according to one embodiment of the present utility model, catalytic burner 100 also includes distribution member 15, distribution member 15 are located at air inlet 1102, have dispensing orifice that is multiple arranged spaced apart and turning on premix chamber 1101 in distribution member 15 151。

In other words, the catalytic burner 100 is mainly made up of burner framework 11, catalyst converter 12 and distribution member 15, wherein, Distribution member 15 is located at the air inlet 1102 of burner framework 11, and the shape one of the shape of distribution member 15 and air inlet 1102 Cause, distribution member 15 is provided with multiple dispensing orifices 151 arranged spaced apart, and each dispensing orifice 151 is turned on respectively with premix chamber 1101, When combustion gas and air pass through distribution member 15, the multiple dispensing orifices 151 in distribution member 15 can break up combustion gas and air, so as to Combustion gas is sufficiently mixed with air, it is ensured that the ratio of combustion gas and air is consistent in zones of different, and then make combustion gas with sky The gaseous mixture of gas sufficiently and uniformly burns, and realizes the catalysis burning of combustion gas, not only can reduce carbon monoxide and nitrogen oxides Discharge, more energy-conserving and environment-protective, and burning relax, combustion noise is low, and security is higher.

Alternatively, according to one embodiment of the present utility model, dispensing orifice 151 is arranged in multi-turn, and often circle includes multiple edges The circumferentially-spaced dispensing orifice 151 for opening arrangement of distribution member 15.Specifically, distribution member 15 can substantially form circular plate, distribution Part 15 is provided with multi-turn dispensing orifice 151 arranged spaced apart, the multiple dispensing orifices 151 for often enclosing along its it is circumferentially-spaced open arrangement, have Sharp ground, multiple dispensing orifices 151 are evenly arranged, so as to ensure that combustion gas can more sufficiently and uniformly mix with air, further carry High combustion gas is burnt with the catalysis of the gaseous mixture of air.

Advantageously, according to one embodiment of the present utility model, multiple dispensing orifices 151 are arranged in emitting shape.With reference to Fig. 5, Distribution member 15 is provided with multigroup dispensing orifice 151, and multigroup dispensing orifice 151 opens arrangement along the circumferentially-spaced of distribution member 15, per group many Individual dispensing orifice 151 along distribution member 15 the arrangement that is radially spaced, i.e., the arrangement density of the dispensing orifice 151 at the middle part of distribution member 15 compared with It is close, and the arrangement density away from the second dispensing orifice of center 151 of distribution member 15 is relatively dredged, combustion gas and air pass through respectively dispensing orifice 151 distribution members 15 in emitting shape arrangement, premix chamber 1101 is interior to spread from the central position to surrounding combustion gas is entered with air, from And it is further ensured that combustion gas can be sufficiently mixed with air, and then the catalysis burning of combustion gas and the gaseous mixture of air is improved, more Energy-conserving and environment-protective, not only can reduce the discharge of carbon monoxide and nitrogen oxides, and burn relax, combustion noise it is low, security It is higher.

Additionally, according to one embodiment of the present utility model, the periphery of distribution member 15 is distributed along multiple lugs 152 are provided with Part 15 is detachably connected by multiple lugs 152 with burner framework 11.

Specifically, distribution member 15 forms the consistent circle of shape with air inlet 1102, and the outside dimension of distribution member 15 is big In the radial dimension equal to air inlet 1102, the periphery edge of distribution member 15 is provided with four along its circumferentially-spaced lug for opening arrangement 152, each extending radially outwardly along distribution member 15 of lug 152, distribution member 15 is by multiple lugs 152 and burner framework 11 It is connected, it is ensured that the connection reliability of distribution member 15 and burner framework 11.

Wherein, as shown in Figure 3 and Figure 4, catalytic burner 100 also includes lid 14 on catalyst converter base 13 and catalyst converter, urges Change device base 13 to be located in burner framework 11 and at gas outlet 1103, lid 14 is located at catalyst converter base 13 on catalyst converter The installation cavity for accommodating catalyst converter 12 is limited above and between catalyst converter base 13, lid 14 has and installation cavity on catalyst converter The opening of conducting.

In other words, the catalytic burner 100 is main by burner framework 11, catalyst converter 12, catalyst converter base 13, catalyst converter Upper lid 14 is constituted, and wherein catalyst converter base 13 is located at the gas outlet 1103 of burner framework 11, the middle part of catalyst converter base 13 Be provided with premix chamber 1101 conducting base vent mouth, on catalyst converter lid 14 be located at catalyst converter base 13 top and with catalysis Device base 13 is connected, and the middle part of lid 14 is provided with lid blow vent on catalyst converter, on catalyst converter base 13 and catalyst converter between lid 14 The installation cavity for accommodating catalyst converter 12 is limited, installation cavity is turned on respectively with base vent mouth and upper lid blow vent.

Thus, catalyst converter 12 is located at the installation cavity limited between lid 14 on catalyst converter base 13 and catalyst converter, can be with Ensure the fixed installation of catalyst converter 12, it is ensured that catalyst converter 12 can play one's part to the full in the catalyticing combustion process of combustion gas.

Alternatively, according to one embodiment of the present utility model, catalyst converter base 13 forms the circumference along gas outlet 1103 The annular of extension, lid 14 is fitted with catalyst converter base 13 on catalyst converter, is provided between catalyst converter base 13 and burner framework 11 Adiabatic sealing gasket 16.Thus, by arranging sealing gasket 16 between the upper surface of catalyst converter base 13 and burner framework 11, can To ensure sealing therebetween, so as to avoid the combustion gas in premix chamber 1101 from leaking with the gaseous mixture of air, cause Combustion gas imperfect combustion.

Advantageously, according to one embodiment of the present utility model, the position of the neighbouring gas outlet 1103 of burner framework 11 It is provided with ignition electrode or inductive needle.Specifically, the roof of burner framework 11 is provided with for the high ignition electrode of Anhui group or inductive needle Installing port 1104, ignition electrode or inductive needle arrange adjacent to gas outlet 1103, to realize igniting, makes the catalyst of catalyst converter 12 Temperature reach preset temperature (initiation temperature) so that the gaseous mixture of combustion gas and air can be catalyzed when preheating section Burning.

Describe gas heater A and the catalysis combustion according to the utility model embodiment in detail with reference to specific embodiment The course of work of burner 100.

As shown in figures 1 and 3, the catalytic burner 100 is main by burner framework 11, catalyst converter 12, catalyst converter base 13rd, lid 14, distribution member 15, sealing gasket 16, ignition electrode/inductive needle composition on catalyst converter.

Wherein, ignition electrode/inductive needle portion dress is arranged in the installing port 1104 of the diapire of burner framework 11, distribution member 15 It is fixed at the air inlet 1102 of burner framework 11, realizes evenly distributing for combustion gas and air mixture, it is ensured that reaches catalysis The combustion gas in each region of device 12 and air mixture are uniform, realize the full section homogenous combustion of catalyst converter 12.

Catalyst converter 12 is main to be made up of matrix and the catalyst being coated on matrix, and catalyst needs certain initiation temperature Competence exertion catalytic function, realizes catalysis burning, therefore catalyst converter 12 is integrated with naked light preheated burning section, makes on catalyst converter 12 Catalyst is preheated.

When gas heater A works, first water is passed through into heat exchanger 500 by water inlet interface 22, then controller control Catalytic burner processed 100 is started working, and when catalytic burner 100 is started working, first ignition electrode/inductive needle realizes igniting, from And the catalyst on the preheating section in catalyst converter 12 is heated, until the temperature of catalyst reaches more than 700 DEG C, Ran Houfeng Machine 300 and gas ratio valve 400 are respectively passed through air and combustion gas in premix chamber 1101 by air inlet 1102 respectively, here During, the distribution member 15 at air inlet 1102 can be sufficiently mixed combustion gas with air, when combustion gas and the mixing of air When gas is entered in premix chamber 1101, then catalysis burning is carried out by catalyst converter 12, because the temperature of catalyst has reached Combustion temperature, therefore can ensure that the catalysis burning of the gaseous mixture of combustion gas and air is persistently carried out, effectively suppress nitrogen oxides Produce, while it is more complete to be catalyzed ratio of combustion, the content of carbon monoxide in flue gas can be reduced, burn the high-temperature flue gas that produce with change Hot device 500 carries out heat exchange, so as to the water in heating heat exchanger 500, it is ensured that flow out gas heater A is hot water, passes through Flue gas after heat exchange discharges outdoor Jing after the collection of exhaust fume collecting hood 600, by exhaust opening 61.

The catalytic burner 100 is using catalysis burning, it is ensured that combustion gas is fully burnt, more energy-conserving and environment-protective, not only may be used To reduce the discharge (concentration of emission of carbon monoxide and nitrogen oxides is less than 10ppm) of carbon monoxide and nitrogen oxides, and fire Mitigation, combustion noise low (combustion noise is less than 48dB) are burnt, security is higher.It is the simple structure of the catalytic burner 100, tight Gather, small volume, using safety, energy-conserving and environment-protective, Consumer's Experience is good.

Thus, according to the gas heater A of the utility model embodiment, simple structure, compact, each part connection reliability, Small volume, combustion gas and air carry out catalysis burning in catalytic burner 100, the carbon monoxide in flue gas and nitrogen oxygen after burning The content of compound is less, energy-conserving and environment-protective, and using safety, and combustion gas relaxes with the mixture combustion of air, advantageously reduces combustion The operating noise of gas water heater A, Consumer's Experience is good.

Other according to the gas heater A of the utility model embodiment are constituted and operated for ordinary skill All it is known for personnel, is not detailed herein.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " is based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify description, rather than indicate or imply indication device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, it is for example, it may be fixedly connected, or be detachably connected or integral；Can be It is mechanically connected, or electrically connects or can communicate each other；Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clearly restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.

In the description of this specification, reference term " one embodiment ", " some embodiments ", example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered Row is combined and combined.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to restriction of the present utility model, one of ordinary skill in the art is in scope of the present utility model It is interior above-described embodiment to be changed, be changed, being replaced and modification.

Claims (10)

1. a kind of gas heater, it is characterised in that include：

Housing, defines accommodating chamber in the housing, the housing has water inlet interface and water outlet mouthpiece；

Catalytic burner, the catalytic burner is located in the accommodating chamber, and premix chamber, institute are defined in the catalytic burner State catalytic burner and there is the air inlet and gas outlet turned on the premix chamber, catalyst converter is provided with the gas outlet, it is described Catalyst converter is configured to the sustained combustion when temperature exceedes predetermined temperature and has combustion gas and air to supply；

Blower fan, the blower fan turns on to convey air to the premix chamber with the air inlet；

Gas ratio valve, the outlet of the gas ratio valve is turned on to the premix chamber delivery of fuel gas with the air inlet；

Heat exchanger, the heat exchanger is located at the top of the burner and is connected to absorb the burner combustion with the burner Burn the heat for producing, the heat exchanger has water inlet and delivery port, the water inlet is turned on the water inlet interface, it is described go out The mouth of a river turns on the water outlet mouthpiece.

2. according to the gas heater described in claim 1, it is characterised in that be covered with distribution member, institute at the air inlet State and have in distribution member dispensing orifice that is multiple arranged spaced apart and turning on premix chamber.

3. according to the gas heater described in claim 2, it is characterised in that the dispensing orifice arranges that often circle is wrapped in multi-turn Include multiple circumferentially-spaced dispensing orifices for opening arrangement along the distribution member.

4. according to the gas heater described in claim 3, it is characterised in that multiple dispensing orifices are arranged in emitting shape.

5. according to the gas heater described in claim 2, it is characterised in that catalytic burner includes：

Burner framework, defines the premix chamber in the burner frame body, the air inlet and gas outlet are located at the combustion In burner framework；

Catalyst converter, the catalyst converter includes matrix and coating catalyst on the matrix, and is integrated with the catalyst converter Preheating section.

6. according to the gas heater described in claim 5, it is characterised in that the periphery edge of the distribution member is provided with multiple convex Ear, the distribution member is detachably connected by multiple lugs with the burner framework.

7. according to the gas heater described in claim 5, it is characterised in that catalytic burner also includes：

Catalyst converter base, the catalyst converter base is located in the burner framework and at the gas outlet；

Cover on catalyst converter, housing is located on the catalyst converter base and limits use between catalyst converter base on the catalyst converter In the installation cavity for accommodating catalyst converter, lid has the opening with installation cavity conducting on the catalyst converter.

8. according to the gas heater described in claim 7, it is characterised in that the catalyst converter base is formed along the outlet Mouthful circumferentially extending annular, cover on the catalyst converter and fitted with the catalyst converter base, the catalyst converter base and the combustion Adiabatic sealing gasket is provided between burner framework.

9. according to the gas heater described in claim 5, it is characterised in that the neighbouring described outlet of the burner framework The position of mouth is provided with ignition electrode or inductive needle.

10. according to the gas heater described in claim 5, it is characterised in that described matrix is foam silicon carbide ceramics, institute Catalyst is stated for modified aluminas, platinum, palladium and iron oxide and/or the mixture of iron oxide.