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
With a kind of gas heater of new proposition, the gas heater can suppress the generation of NOx, reduce the discharge of NOx and CO, reach
To the purpose of energy-saving and emission-reduction, and environmental pollution can be reduced.
According to gas heater of the present utility model, including:Shell, the inside the shell limit accommodating chamber;Burner,
The burner is located in the accommodating chamber, limits combustion chamber in the burner, and the burner is provided with point
Fuel gas inlet, air intlet and exhanst gas outlet not with the combustion chamber;Heat exchanger, the heat exchanger are located at described
Burning is indoor;Flue, the flue are located in the accommodating chamber, and the admission line has inlet end and outlet
End, the inlet end connect the flue gas indoor to discharge the burning, the outlet side and the air with the exhanst gas outlet
Inlet communication is indoor so that the flue gas in the flue is sent into the burning.
According to gas heater of the present utility model, by arranging flue in accommodating chamber so that burning interior is changed
Low-temperature flue gas after heat turn again to burning interior by flue, due to a large amount of CO present in flue gas2With vapor etc.
Material with higher thermal capacity, there is the material of higher thermal capacity can absorb combustion chamber heat for these, reduce burning fire
The temperature of flame, so as to suppress the generation of NOx, reduces the discharge of NOx.It is that imperfect combustion a small amount of CO can in flue gas simultaneously
Combustion reaction is carried out with air, to reduce the discharge of CO, the thermal efficiency is improved, is reduced the consumption of combustion gas.So as to reach energy-saving and emission-reduction
Purpose, and environmental pollution can be reduced.
In addition, can also have following additional technical feature according to gas heater of the present utility model:
According to some embodiments of the present utility model, the gas heater also includes:Flow valve, the flow valve are located at
For controlling the flue gas flow of the flue on the flue.
Alternatively, the gas heater also includes:Control device, the control device respectively with the flow valve and institute
State burner to be connected with the flow according to the flue gas flow control flow valve in the burner.
Further, gas valve is provided with the fuel gas inlet, and the gas valve is connected with the control device and by institute
State control device control gas flow.
According to some embodiments of the present utility model, the gas heater also includes:Blower fan, the blower fan are provided with
One air inlet, the second air inlet and air outlet, first air inlet are connected with the outlet side, second air inlet with it is outer
Portion's air communication, the air outlet are connected with the air intlet.
According to some embodiments of the present utility model, the air intlet and the fuel gas inlet are each provided at the burning dress
The lower section put, the exhanst gas outlet are located at the top of the burner and stretch out the shell.
According to some embodiments of the present utility model, the gas heater also includes:Exhaust fume collecting hood, the exhaust fume collecting hood are located at
The top of the burner, the flue are connected with the exhaust fume collecting hood.
According to some embodiments of the present utility model, the burner is shade burner.
According to some embodiments of the present utility model, the gas heater also includes:Water inlet pipe, the one of the water inlet pipe
End is formed as cold water water inlet end and the other end is connected with the heat exchanger;Outlet pipe, one end of the outlet pipe are changed with described
Hot device is connected and the other end is formed as hot water effluent end.
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.
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.
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 of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " or position relationship are 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 ", " being 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 understood as the case may be.
Below with reference to the accompanying drawings gas heater 100 according to the utility model embodiment is described.
As shown in figure 1, according to the gas heater 100 of the utility model embodiment can include shell 1, burner 2,
Heat exchanger 3 and flue 4.
Specifically, accommodating chamber 11 is limited in shell 1, burner 2 is located in accommodating chamber 11, limit in burner 2
Go out combustion chamber 21, burner 2 is provided with fuel gas inlet 23, air intlet 22 and the exhanst gas outlet for connecting with combustion chamber 21 respectively
24.Combustion gas can be entered in combustion chamber 21 from fuel gas inlet 23, and air can be entered in combustion chamber 21 from air intlet 22, air and combustion
Gas is burnt to provide heat as gas heater 100 in combustion chamber 21, and the flue gas produced after air and fuel gas buring can be from cigarette
Gas outlet 24 is discharged.In combustion chamber 21, thus heat exchanger 3 is located at, and heat exchanger 3 can be with the high temperature cigarette of generation in combustion chamber 21
Gas is carried out heat exchange and is heated with the cold water to gas heater 100.
Flue 4 is located in accommodating chamber 11, and flue 4 has inlet end 42 and outlet side 43, inlet end 42 and cigarette
To discharge the flue gas in combustion chamber 21, outlet side 43 is connected with by flue 4 24 connection of gas outlet with air intlet 22
Flue gas is sent in combustion chamber 21.Combustion gas burns the high-temperature flue gas for producing in combustion chamber 21 after the heat exchange of heat exchanger 3, high temperature
The temperature of flue gas can be reduced to 110 DEG C -200 DEG C to form low-temperature flue gas, and the Main Ingredients and Appearance of flue gas is the product master of fuel gas buring
Vapor to be included, CO2、O2。
Low-temperature flue gas can be discharged from exhanst gas outlet 24, and wherein, part low-temperature flue gas can enter fume pipe through inlet end 42
In road 4, and can in circulation in flue 4, the low-temperature flue gas in flue 4 by outlet side 43 flow to air intlet 22 with
Flow in combustion chamber 21.Due to a large amount of CO present in flue gas2With the material with higher thermal capacity such as vapor, these tools
The material for having higher thermal capacity can more absorb 21 heat of combustion chamber, to reduce the temperature of combustion flame, so as to suppress
The generation of NOx, reduces the discharge of NOx.In flue gas, imperfect combustion a small amount of CO also can carry out combustion reaction with air simultaneously,
To reduce the discharge of CO, the thermal efficiency is improved, reduce the consumption of combustion gas.So as to reach the purpose of energy-saving and emission-reduction, reduce environmental pollution.
According to the gas heater 100 of the utility model embodiment, by arranging flue 4 in accommodating chamber 11, make
Obtain the low-temperature flue gas in combustion chamber 21 after heat exchange to be recycled in combustion chamber 21, present in flue gas by flue 4
A large amount of CO2With the material with higher thermal capacity such as vapor, these materials with higher thermal capacity can absorb burning
21 heat of room, reduces the temperature of combustion flame, so as to suppress the generation of NOx, reduces the discharge of NOx.It is simultaneously not complete in flue gas
A small amount of CO of full burning can carry out combustion reaction with air, to reduce the discharge of CO, improve the thermal efficiency, reduce disappearing for combustion gas
Consumption.So as to reach the purpose of energy-saving and emission-reduction.
In some embodiments of the present utility model, gas heater 100 can also include flow valve 41, and flow valve 41 sets
Flue gas flow on flue 4 for control flue 4.Thus, the thermic load according to gas heater 100, leads to
Inflow-rate of water turbine valve 41 can control the flow of flue gas in flue 4, so as to enter to reduce the temperature of 21 flame of combustion chamber, while
The utilization rate of combustion gas is improved, the safety in utilization of gas heater 100 can be also improved, it is ensured that the performance of gas heater 100.
As shown in figure 1, gas heater 100 can also include control device 9, control device 9 respectively with flow valve 41 and
Burner 2 is connected with the flow according to the flue gas flow control flow valve 41 in burner 2.Specifically, control device 9 can
According to the thermic load of real-time gas heater 100, calculate and circulate required flue gas flow, and control the flow velocity of flow valve 41, with
A certain amount of flue gas and air are flowed in combustion chamber 21 by air intlet 22 together, so as to be conducive to in burner 2
The control of flue gas recirculation amount, to ensure to reduce to the full extent the temperature of flame during burning, suppresses the generation of NOx, improves combustion
The utilization rate of gas.
In some examples of the present utility model, gas valve 231, gas valve 231 and control at fuel gas inlet 23, can be provided with
Device 9 is connected and controls gas flow by control device 9, so as to can rationally utilize combustion gas, improves the utilization rate of combustion gas, Jin Erda
To the purpose of energy-saving and emission-reduction.
In some embodiments of the present utility model, gas heater 100 can also include blower fan 5, and blower fan 5 is provided with the
One air inlet 51, the second air inlet (not shown) and air outlet 52, the first air inlet 51 are connected with outlet side 43, and second enters
Air port is connected with extraneous air, and air outlet 52 is connected with air intlet 22.Flue gas in the presence of blower fan 5, in flue 4
Enter in blower fan 5 from the first air inlet 51, the extraneous air of gas heater 100 is entered in blower fan 5 from the second air inlet, flue gas
Air intlet 22 is flowed to from air outlet 52 with extraneous air after mixing in blower fan 5, and flowed in combustion chamber 21.
In some embodiments of the present utility model, air intlet 22 and fuel gas inlet 23 may be provided in burner 2
Lower section, exhanst gas outlet 24 are located at the top of burner 2 and stretch out shell 1.Thus, the mixed gas of flue gas and air are from burning
Air intlet 22 below device 2 is entered in combustion chamber 21, and is flowed up, and combustion gas enters combustion chamber 21 from fuel gas inlet 23
Interior, combustion gas is flowed after burning in combustion chamber 21 on, and the flue gas of the generation after flue gas, air and fuel gas buring can be from burning dress
Put the exhanst gas outlet 24 above in the of 2 to discharge, so as to be conducive to flowing of the gas in combustion chamber 21.
In some embodiments of the present utility model, gas heater 100 can also include exhaust fume collecting hood 6, and exhaust fume collecting hood 6 is located at
The top of burner 2, flue 4 are connected with exhaust fume collecting hood 6.Flue gas in combustion chamber 21 leads to exhaust fume collecting hood 6, and can be by collection
Petticoat pipe 6 discharges gas heater 100, and part low-temperature flue gas can lead to flue 4.So as to facilitate the discharge of flue gas.
In some embodiments of the present utility model, burner 2 can be shade burner, so as to improve combustion gas heat
The effect of the energy-saving and emission-reduction of hydrophone 100, reduces environmental pollution.
In some embodiments of the present utility model, gas heater 100 can also include water inlet pipe 7 and outlet pipe 8, enter
One end of water pipe 7 is formed as cold water water inlet end 71 and the other end is connected with heat exchanger 3, one end and the heat exchanger 3 of outlet pipe 8
Connect and the other end is formed as hot water effluent end 81.Cold water enters water inlet pipe 7 from cold water water inlet end 71, is flowed to by water inlet pipe 7
Heat exchanger 3 and exchanged heat with heat exchanger 3, the hot water after heat exchange flows to outlet pipe 8, and flows out from hot water effluent end 81.
It is embodied as according to one of the gas heater 100 of the utility model embodiment below with reference to Fig. 1 detailed descriptions
Example.It is worth being understood by, simply exemplary illustration described below, and it is not intended that restriction to the utility model embodiment.
As shown in figure 1, according to the gas heater 100 of the utility model embodiment can include shell 1, burner 2,
Heat exchanger 3 and flue 4, flow valve 41, control device 9, gas valve 231, blower fan 5, exhaust fume collecting hood 6, water inlet pipe 7 and water outlet
Pipe 8.
Specifically, accommodating chamber 11 is limited in shell 1, burner 2 is located in accommodating chamber 11, limit in burner 2
Go out combustion chamber 21, burner 2 is provided with fuel gas inlet 23, air intlet 22 and the exhanst gas outlet for connecting with combustion chamber 21 respectively
24.Flue 4 is may be provided in accommodating chamber 11, and flue 4 has inlet end 42 and outlet side 43, and inlet end 42 is gone out with flue gas
To discharge the flue gas in combustion chamber 21, outlet side 43 is connected with air intlet 22 with by the flue gas in flue 4 for mouthfuls 24 connections
Send in combustion chamber 21.
Combustion gas can be entered in combustion chamber 21 from fuel gas inlet 23, and air can be entered in combustion chamber 21 from air intlet 22, empty
Gas and combustion gas are burnt to provide heat, the high temperature cigarette that air and fuel gas buring are produced as gas heater 100 in combustion chamber 21
Gas, heat exchanger 3 are located in combustion chamber 21, and high-temperature flue gas can carry out heat exchange with to gas heater 100 with heat exchanger 3
Cold water heated.Flue gas after heat exchange forms low-temperature flue gas, and can discharge from exhanst gas outlet 24.
The low-temperature flue gas part produced in combustion chamber 21 can be entered in flue 4 through inlet end 42, and can be in flue gas
Circulation in pipeline 4, the flue gas in flue 4 flow to air intlet 22 to flow in combustion chamber 21 by outlet side 43.Due to
A large amount of CO present in flue gas2With the material with higher thermal capacity such as vapor, these have the material of higher thermal capacity
21 heat of combustion chamber can be absorbed, the temperature of combustion flame is reduced, so as to the generation of NOx can be suppressed, the discharge of NOx is reduced.Together
When flue gas in imperfect combustion a small amount of CO can carry out combustion reaction with air, to reduce the discharge of CO, improve the thermal efficiency, subtract
The consumption of few combustion gas.So as to reach the purpose of energy-saving and emission-reduction.
Flow valve 41 be located on flue 4 for control flue 4 flue gas flow, control device 9 respectively with
Flow valve 41 is connected with burner 2 with the flow according to flue gas flow control flow valve 41, is provided with combustion gas at fuel gas inlet 23
Valve 231, gas valve 231 are connected with control device 9 and control gas flow by control device 9.
Blower fan 5 is provided with the first air inlet 51, the second air inlet and air outlet 52, the first air inlet 51 and flue 4
Outlet side 43 be connected, the second air inlet is connected with extraneous air, and air outlet 52 is connected with air intlet 22.Flue
Flue gas in 4 is entered in blower fan 5 from the first air inlet 51, and the extraneous air of gas heater 100 is entered from the second air outlet 52
In blower fan 5, flue gas and extraneous air flow to air intlet 22 from air outlet 52 after mixing in blower fan 5, and flow to combustion chamber 21
It is interior.
Air intlet 22 and fuel gas inlet 23 are each provided at the lower section of burner 2, and exhanst gas outlet 24 is located at burner 2
Top and stretch out the shell 1.So as to be conducive to flowing of the gas in combustion chamber 21.
Exhaust fume collecting hood 6 is located at the top of burner 2, and the air inlet pipe of flue 4 is connected with exhaust fume collecting hood 6, in combustion chamber 21
The low-temperature flue gas part for flowing to exhaust fume collecting hood 6 can flow to flue 4.
One end of water inlet pipe 7 is formed as cold water water inlet end 71 and the other end is connected with heat exchanger 3, one end of outlet pipe 8
Connect with heat exchanger 3 and the other end is formed as hot water effluent end 81.Cold water enters water inlet pipe 7 from cold water water inlet end 71, passes through
Water inlet pipe 7 is flowed to heat exchanger 3 and is exchanged heat with heat exchanger 3, and the hot water after heat exchange flows to outlet pipe 8, and goes out from hot water
Water end (W.E.) 81 flows out.
According to the gas heater 100 of the utility model embodiment, the low-temperature flue gas in combustion chamber 21 after heat exchange pass through cigarette
Feed channel 4 is recycled in combustion chamber 21, due to a large amount of CO present in flue gas2With vapor etc. with higher thermal capacity
Material, there is the material of higher thermal capacity can absorb 21 heat of combustion chamber, the temperature of combustion flame is reduced, so as to press down for these
The generation of NOx processed, reduces the discharge of NOx.It is that imperfect combustion a small amount of CO can carry out burning instead with air simultaneously in flue gas
Should, to reduce the discharge of CO, the thermal efficiency is improved, reduce the consumption of combustion gas.So as to reach the purpose of energy-saving and emission-reduction.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
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, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
Example ", or the description of " some examples " etc. mean specific features with reference to the embodiment or example description, structure, material or spy
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State.And, the specific features of description, structure, material or feature can be with
Combined in any one or more embodiments or example in an appropriate manner.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 is 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.