CN109595557A - A kind of low-NOx combustor for water heater - Google Patents
A kind of low-NOx combustor for water heater Download PDFInfo
- Publication number
- CN109595557A CN109595557A CN201811123954.6A CN201811123954A CN109595557A CN 109595557 A CN109595557 A CN 109595557A CN 201811123954 A CN201811123954 A CN 201811123954A CN 109595557 A CN109595557 A CN 109595557A
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- CN
- China
- Prior art keywords
- burner
- cylindrical portion
- plate
- combustor
- inlet tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
Abstract
The invention discloses a kind of low-NOx combustors for water heater, the burner includes inner burner and outer burner, the burner plate of the inner burner is located at the edge of the combustor end oralia and the multiple burner plate is presented, lower stepped construction, there are ports between adjacent burner plate, there are external entrances for the side of the combustor end oralia, the end of the external entrance is communicated to the combustion pipe, the end of the combustion pipe is communicated at the burner platform, burning upper end oralia is also provided with an entrance pipeline, the inlet tube is inserted into the entrance pipeline and the inlet tube and the entrance pipeline are clamped, the inside of the entrance pipeline is equipped with retainer；The upper plate of the outer burner and lower plate are respectively provided at the two sides of the combustor end oralia and the upper plate is fixedly connected with the edge of lower plate.The present invention effectively reduces the amount for the Nox that fuel generates in combustion, and the noise decibel of burner is effectively reduced.
Description
Technical field
The present invention relates to technical field of water heaters, specially a kind of low-NOx combustor for water heater.
Background technique
Fuel water heater forms nitrogen oxides (NOx) in combustion.NO.sub.x is usually generated by thermal-flame.It is low
NO x burner reduces the amount of the NOx formed during burning.Double burner component rich in lean-burn is burnt poor using lean combustion burner
Fuel/air mixture, and use fuel-rich burner burning fuel-rich fuel/air mixture.Double burnings rich in lean-burn
Device assembly reduces NOx by reducing flame temperature.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of low-NOx combustor for water heater, solves now
Most of fuel water heater leads to the problem of a large amount of nitrogen oxides during burning, and noise circumstance pollutes, and
The excessive problem of noise decibel in combustion process.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme: a kind of low-NOx combustor for water heater, institute
Stating burner includes inner burner and outer burner, the inner burner include burner plate, combustion pipe, combustor end oralia,
Inlet tube and channel, the burner plate include it is multiple, the burner plate is located at the edge of the combustor end oralia and described
Multiple burner plates go to upper and lower stepped construction, and there are port between adjacent burner plate, the side of the combustor end oralia is stayed
There is external entrance, the end of the external entrance is communicated to the combustion pipe, and the end of the combustion pipe is communicated to described
At burner platform, burning upper end oralia is also provided with an entrance pipeline, and the entrance pipeline and the external entrance are located at institute
The ipsilateral and described entrance pipeline for stating combustor end oralia is located at the top of the external entrance, and the inlet tube is inserted into institute
It states in entrance pipeline and the inlet tube and the entrance pipeline is clamped, the inside of the entrance pipeline is equipped with stop
Part；The outer burner includes upper plate, lower plate and burner opening, and the upper plate and lower plate are respectively provided at the burner port
Two sides of the plate and upper plate is fixedly connected with the edge of lower plate, the two sides of the upper plate and lower plate and the combustor end oralia
It is reserved with combustion cavity, the combustion cavity is communicated at the port, and the upper plate and lower plate are at the port
Edge be provided with the burner opening.
Preferably, be equipped with an arc panel in the upper plate and lower plate, respectively upper arc panel and arc lower plate, it is described on
Arc panel and arc lower plate are respectively the upper plate and lower plate integrated molding, and the upper arc panel and arc lower plate are located at
The two sides of the entrance pipeline.
Preferably, the surface of the inlet tube is equipped with multiple flanges along its circumferencial direction, and the entrance pipeline is along its circle
Circumferential direction is equipped with multiple grooves, and the flange is slidably connected with the groove, and the inlet tube is arranged to different form.
Preferably, the inlet tube includes cylindrical portion, rotary table portion and gas outlet, inside the cylindrical portion and rotary table portion
Be connected in the middle part of the hollow and described cylindrical portion and rotary table portion, the wide end in the rotary table portion be fixedly connected with the side of the cylindrical portion and
The rotary table portion and the cylindrical portion integrated molding, the surface in the rotary table portion is uniformly provided with multiple gas outlets.
Preferably, the inlet tube includes cylindrical portion, point and gas outlet, inside the cylindrical portion and point
Be connected in the middle part of the hollow and described cylindrical portion and point, the wide end of the point be fixedly connected with the side of the cylindrical portion and
The point and the cylindrical portion integrated molding, the surface in the rotary table portion is uniformly provided with multiple gas outlets.
Preferably, the inlet tube includes cylindrical portion, the first stepped part, second step ladder and gas outlet, and described
Stepped plate is connected to the end of the cylindrical portion, the two sides of first stepped part and second step ladder by second step ladder
It is provided with the gas outlet.
Preferably, the inlet tube includes cylindrical portion, and one end of the cylindrical portion inner hollow and the cylindrical portion is equipped with
Fixed plate is provided with multiple gas outlets in the fixed plate and the gas outlet is communicated to the inside of the cylindrical portion.
Preferably, the NOx fuel of low concentration is passed through in the inlet tube.
(3) beneficial effect
The present invention provides a kind of low NOX burners for water heater.Have it is following the utility model has the advantages that
In use, the fuel/air mixture of fuel-rich is supplied to external entrance, and by the fuel of poor fuel/
Air mixture is supplied to inlet tube, and fuel can be natural gas, propane, kerosene, methane or other suitable fuel.For firing
It burns.Fuel-rich mixture is ignited to form a series of fuel-rich flames in external inlet.It is rich compared with stoichiometry flame
Fuel flame is burnt at relatively low temperatures, to reduce as caused by fuel-rich combustion relative to stoichiometric(al) combustion
The amount of NOx.Lean fuel mixture is ignited to form a series of poor fuel flames at the port of inner burner.It is counted with chemistry
Amount flame is compared, and poor fuel flame burns at relatively low temperatures, to reduce relative to stoichiometric(al) combustion by lean combustion
The amount of NOx caused by material burns.In addition, compared with the burner with stoichiometry flame, fuel-rich flame and poor fuel fire
Flame interacts to form whole flame, leads to the reduction of burner noise level.The present invention effectively reduces fuel in combustion process
The amount of the Nox of middle generation, and the noise decibel of burner is effectively reduced.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is decomposition texture schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of inlet tube described in the embodiment of the present invention one；
Fig. 4 is the structural schematic diagram of inlet tube described in the embodiment of the present invention two；
Fig. 5 is the structural schematic diagram of inlet tube described in the embodiment of the present invention three；
Fig. 6 is the structural schematic diagram of inlet tube described in the embodiment of the present invention four.
In figure: 1, burner；2, inner burner；3, burner plate；4, combustion pipe；5, combustor end oralia；6, inlet tube；
7, external entrance；8, entrance pipeline；9, upper plate；10, lower plate；11, burner opening；12, flange；13, upper arc panel；14, under
Arc panel；15, cylindrical portion；16, rotary table portion；17, gas outlet；18, point；19, the first stepped part；20, second step ladder；
21, fixed plate；22, outer burner.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention provides embodiment one:
A kind of low-NOx combustor for water heater, the burner 1 includes inner burner 2 and outer burner 22, described
Inner burner 2 includes burner plate 3, combustion pipe 4, combustor end oralia 5, inlet tube 6, and the burner plate 3 is described including multiple
Burner plate 3 is located at the edge of the combustor end oralia 5 and the multiple burner plate 3 goes to upper and lower stepped construction, adjacent burning
There are port between plate 3, there are external entrance 7, the end of the external entrance 7 connects for the side of the combustor end oralia 5
The combustion pipe 4 is led to, the end of the combustion pipe 4 is communicated at the burner plate 3, and combustor end oralia 5 is also provided with
One entrance pipeline 8, the entrance pipeline 8 are located at the ipsilateral and described of the combustor end oralia with the external entrance 7
Entrance pipeline 8 is located at the top of the external entrance 7, the inlet tube 6 be inserted into the entrance pipeline 8 and it is described enter
Mouth pipe 6 and the entrance pipeline 8 are clamped, and the inside of the entrance pipeline 8 is equipped with retainer；The outer burner 22 includes
Upper plate 9, lower plate 10 and burner opening 11, the upper plate 9 and lower plate 10 be respectively provided at the two sides of the combustor end oralia 5 and
The upper plate 9 is fixedly connected with the edge of lower plate 10, and the upper plate 9 and lower plate 10 and the two sides of the combustor end oralia 5 are pre-
There are combustion cavity, the combustion cavity is communicated at the port, and the upper plate 9 and lower plate 10 are at the port
Edge be provided with the burner opening 11.
In the present embodiment, it is equipped with an arc panel in the upper plate 9 and lower plate 10, respectively upper arc panel 13 and lower arc
Shape plate 14, the upper arc panel 13 and arc lower plate 14 are respectively 10 integrated molding of the upper plate 9 and lower plate, the upper arc
Plate 13 and arc lower plate 14 are located at the two sides of the entrance pipeline 8.
In the present embodiment, the inlet tube 6 includes cylindrical portion 15, rotary table portion 16 and gas outlet 17, the cylinder
It is connected in the middle part of portion 15 and 16 inner hollow of rotary table portion and the cylindrical portion 15 and rotary table portion 16, the wide end in the rotary table portion 16 and institute
The side for stating cylindrical portion 15 is fixedly connected and the rotary table portion 16 and 15 integrated molding of cylindrical portion, the rotary table portion 16
Surface is uniformly provided with multiple gas outlets 17, and the surface of the rotary table portion 16 and cylindrical portion 15 is equipped with multiple convex along its circumferencial direction
Edge 12.
In the present embodiment, the NOx fuel of low concentration is passed through in the inlet tube 6.
Shown in Fig. 1, Fig. 2, Fig. 4, the present invention provides embodiment two:
With embodiment one the difference is that: the inlet tube 6 include cylindrical portion 15, point 18 and gas outlet
17, it is connected in the middle part of the cylindrical portion 15 and 18 inner hollow of point and the cylindrical portion 15 and point 18, the point
18 wide end is fixedly connected with the side of the cylindrical portion 15 and the point 18 and 15 integrated molding of cylindrical portion, institute
The surface for stating point 18 is uniformly provided with multiple gas outlets 17.
Shown in Fig. 1, Fig. 2, Fig. 5, the present invention provides embodiment three:
With embodiment one the difference is that: the inlet tube 6 include cylindrical portion 15, the first stepped part 19, the second ladder
Portion 20 and gas outlet 17, first stepped part 19 are connected to the end of the cylindrical portion 15 by second step ladder 20,
The two sides of first stepped part 19 and second step ladder 20 are provided with the gas outlet 17.
Shown in Fig. 1, Fig. 2, Fig. 6, the present invention provides example IV:
With embodiment one the difference is that: the inlet tube 6 include cylindrical portion 15,15 inner hollow of cylindrical portion and
One end of the cylindrical portion 15 is equipped with fixed plate 21, is provided with multiple gas outlets 17 and the gas outlet in the fixed plate 21
17 are communicated to the inside of the cylindrical portion 15.
In conclusion in use, the fuel/air mixture of fuel-rich is supplied to external entrance 7, and by lean combustion
The fuel/air mixture of material is supplied to inlet tube 6, and fuel can be natural gas, propane, kerosene, methane or other are suitable
Fuel.For burning.Fuel-rich mixture is ignited to form a series of fuel-rich flames at external entrance 7.It is counted with chemistry
Amount flame is compared, and fuel-rich flame burns at relatively low temperatures, to reduce relative to stoichiometric(al) combustion by fuel-rich
The amount of NOx caused by material burns.Lean fuel mixture is ignited to form a series of poor fuels at the port of inner burner 2
Flame.Compared with stoichiometry flame, poor fuel flame burns at relatively low temperatures, thus relative to stoichiometric(al) combustion
Reduce the amount of the NOx as caused by fuel-lean combustion.In addition, compared with the burner with stoichiometry flame, fuel-rich fire
Flame and poor fuel flame interact to form whole flame, lead to the reduction of burner noise level.The present invention effectively reduces combustion
Expect the amount of the Nox generated in combustion, and the noise decibel of burner is effectively reduced.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of low-NOx combustor for water heater, it is characterised in that: the burner (1) includes inner burner (2) and outer
Burner (22), the inner burner (2) include burner plate (3), combustion pipe (4), combustor end oralia (5), inlet tube
(6), the burner plate (3) includes multiple, and the burner plate (3) is located at the edge of the combustor end oralia (5) and described more
A burner plate (3) goes to upper and lower stepped construction, and there are port, the combustor end oralias (5) between adjacent burner plate (3)
Side there are external entrance (7), the end of the external entrance (7) is communicated to the combustion pipe (4), the combustion pipe
(4) end is communicated at the burner plate (3), and combustor end oralia (5) is also provided with an entrance pipeline (8), the entrance
The ipsilateral and described entrance pipeline (8) that pipeline (8) is located at the combustor end oralia (5) with the external entrance (7) sets
In the top of the external entrance (7), the inlet tube (6) is inserted into the entrance pipeline (8) and the inlet tube (6)
It is clamped with the entrance pipeline (8), the inside of the entrance pipeline (8) is equipped with retainer；Outer burner (22) packet
Upper plate (9), lower plate (10) and burner opening (11) are included, the upper plate (9) and lower plate (10) are respectively provided at the combustor end
The two sides of oralia (5) and the upper plate (9) is fixedly connected with the edge of lower plate (10), the upper plate (9) and lower plate (10) and institute
The two sides for stating combustor end oralia (5) are reserved with combustion cavity, and the combustion cavity is communicated at the port, the upper plate
(9) and edge of the lower plate (10) at the port is provided with the burner opening (11).
2. a kind of low-NOx combustor for water heater according to claim 1, it is characterised in that: the upper plate (9) and
Lower plate is equipped with an arc panel on (10), respectively upper arc panel (13) and arc lower plate (14), the upper arc panel (13) and
Arc lower plate (14) is respectively the upper plate (9) and lower plate (10) integrated molding, the upper arc panel (13) and arc lower plate
(14) two sides of the entrance pipeline (8) are located at.
3. a kind of low-NOx combustor for water heater according to claim 1, it is characterised in that:, the inlet tube
(6) it is arranged to different form.
4. a kind of low-NOx combustor for water heater according to claim 3, it is characterised in that: the inlet tube (6)
Including cylindrical portion (15), rotary table portion (16) and gas outlet (17), the cylindrical portion (16) and rotary table portion (16) inner hollow
And be connected in the middle part of the cylindrical portion (15) and rotary table portion (16), the one of the wide end of the rotary table portion (16) and the cylindrical portion (15)
Side is fixedly connected and the rotary table portion (16) and the cylindrical portion (15) integrated molding, the surface of the rotary table portion (16) are uniform
Equipped with multiple gas outlets (17), the surface of the rotary table portion (16) and cylindrical portion (15) is equipped with multiple flanges along its circumferencial direction
(12)。
5. a kind of low-NOx combustor for water heater according to claim 3, it is characterised in that: the inlet tube (6)
Including cylindrical portion (15), point (18) and gas outlet (17), the cylindrical portion (15) and point (18) inner hollow
And be connected in the middle part of the cylindrical portion (15) and point (18), the one of the wide end of the point (18) and the cylindrical portion (15)
Side is fixedly connected and the point (18) and the cylindrical portion (15) integrated molding, the surface of the point (18) are uniform
Equipped with multiple gas outlets (17).
6. a kind of low-NOx combustor for water heater according to claim 3, it is characterised in that: the inlet tube (6)
Including cylindrical portion (15), the first stepped part (19), second step ladder (20) and gas outlet (17), first stepped part
(15) end of the cylindrical portion (15), first stepped part (15) and the second ladder are connected to by second step ladder (19)
The two sides in portion (19) are provided with the gas outlet (17).
7. a kind of low-NOx combustor for water heater according to claim 3, it is characterised in that: the inlet tube (6)
Including cylindrical portion (15), one end of cylindrical portion (15) inner hollow and the cylindrical portion (15) is equipped with fixed plate (21), institute
It states and is provided with multiple gas outlets (17) on fixed plate (21) and the gas outlet (17) is communicated to the interior of the cylindrical portion (15)
Portion.
8. a kind of low-NOx combustor for water heater according to claim 1, it is characterised in that: the inlet tube (6)
Inside it is passed through the NOx fuel of low concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123954.6A CN109595557A (en) | 2018-09-26 | 2018-09-26 | A kind of low-NOx combustor for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123954.6A CN109595557A (en) | 2018-09-26 | 2018-09-26 | A kind of low-NOx combustor for water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109595557A true CN109595557A (en) | 2019-04-09 |
Family
ID=65957213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811123954.6A Pending CN109595557A (en) | 2018-09-26 | 2018-09-26 | A kind of low-NOx combustor for water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595557A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0587456A1 (en) * | 1992-09-11 | 1994-03-16 | Rinnai Kabushiki Kaisha | A burner device and the method of making the same |
| US20030096205A1 (en) * | 2000-02-04 | 2003-05-22 | Renzo Vecchi | Burner with an extension of the venturi tube |
| CN201436507U (en) * | 2009-05-12 | 2010-04-07 | 广东万家乐燃气具有限公司 | An artificial gas burning device applied to a gas heater |
| CN201436472U (en) * | 2009-05-25 | 2010-04-07 | 海尔集团公司 | Fire platoon sheets, burner and gas water heater using same |
| CN103477151A (en) * | 2010-12-01 | 2013-12-25 | A.O.史密斯公司 | Low NOx burner for a water heater |
-
2018
- 2018-09-26 CN CN201811123954.6A patent/CN109595557A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0587456A1 (en) * | 1992-09-11 | 1994-03-16 | Rinnai Kabushiki Kaisha | A burner device and the method of making the same |
| US20030096205A1 (en) * | 2000-02-04 | 2003-05-22 | Renzo Vecchi | Burner with an extension of the venturi tube |
| CN201436507U (en) * | 2009-05-12 | 2010-04-07 | 广东万家乐燃气具有限公司 | An artificial gas burning device applied to a gas heater |
| CN201436472U (en) * | 2009-05-25 | 2010-04-07 | 海尔集团公司 | Fire platoon sheets, burner and gas water heater using same |
| CN103477151A (en) * | 2010-12-01 | 2013-12-25 | A.O.史密斯公司 | Low NOx burner for a water heater |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
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| RJ01 | Rejection of invention patent application after publication |