CN208382583U - A kind of gas heater and its burner - Google Patents

Abstract

The utility model provides a kind of burner, including burner body, burner body includes inner housing and inner core-body, inner core-body is installed on one end of inner housing, and light fire hole is provided on inner core-body, inner core chamber is provided in inner core-body, inner housing is provided with the first mixing chamber, and burner body is provided with the first injector；Inner core chamber includes multistage gradual change mixing chamber, and each gradual change mixing chamber includes parallel fluid channels and funneling opening, and funneling opening includes large diameter end and small-caliber end, and small-caliber end is connected with one end of parallel fluid channels, and large diameter end is arranged towards light fire hole.The utility model additionally provides a kind of gas heater, including above-mentioned burner.Using the gas heater and its burner of technical solutions of the utility model, which can be realized fuel and mixes well with air, to guarantee full combustion of fuel, reduce the utilization rate that fuel is improved while CO discharge.

Description

A kind of gas heater and its burner

Technical field

The utility model relates to technical field of burner, and in particular to a kind of gas heater and its burner.

Background technique

With the development and the improvement of people's living standards of society, gas water heater and burnt gas wall hanging furnace are answered extensively With.Gas water heater refers to using combustion gas as fuel, by combustion heating mode, transfers heat to and flows through heat exchanger In cold water, to reach a kind of gas appliance for preparing hot water purpose.Gas heater is mainly by valve body assembly, burner, warm The composition such as exchanger, safety device, and fuel combustion is insufficient in burner can generate a large amount of CO (carbon monoxide), thus makes While at environmental pollution, so that the utilization rate of fuel is low, and then fuel source is wasted.

In the prior art, fuel carries out mixing tentatively in mixing chamber and enters fire hole burning, thus fuel and air Mixing is not enough, and thus causes fuel to be unable to fully burn, and then CO is caused largely to generate.In the prior art, also there is use Other equipment, such as blower etc. realize that fuel is further mixed with air, but increase production cost, are unfavorable for the market input.

Summary of the invention

The purpose of the utility model is to provide a kind of burner, it is sufficiently mixed which can be realized fuel and air It closes, to guarantee full combustion of fuel, reduces the utilization rate for improving fuel while CO discharge.

Based on this, the utility model proposes a kind of burner, including burner body, the burner body includes interior Shell and inner core-body, the inner core-body is installed on one end of the inner housing, and light fire hole is provided on the inner core-body, described Inner core chamber is provided in inner core-body, the inner housing is provided with the first mixing chamber, and the burner body is provided with first and draws Emitter, the light fire hole, the inner core chamber, first mixing chamber and first injector are sequentially connected logical；In described Core cavity room includes multistage gradual change mixing chamber, and each gradual change mixing chamber includes parallel fluid channels and funneling opening, the funnel Formula opening includes large diameter end and small-caliber end, and the small-caliber end is connected with one end of the parallel fluid channels, and described big Bore end is arranged towards the light fire hole.

Preferably, the inner core-body is provided with turning, the large diameter end at the turning and the funneling opening It is connected.

Preferably, the opening face of the funneling opening and the parallel fluid channels form angle theta, the angle theta Value range be 15 ° -35 °.

Preferably, first mixing chamber is provided with the different chamber unit of multiple cross-sectional areas.

Preferably, the burner body is provided with outer housing, and the outer housing is socketed on the inner housing, institute It states and forms the second mixing chamber between inner housing and the outer housing, and be provided with dense fire between the outer housing and the inner housing Hole, the dense fire hole are located at the light fire hole two sides；It is mixed to be greater than described second for the air-fuel ratio of gaseous mixture in first mixing chamber The air-fuel ratio of intracavitary gaseous mixture is closed, the burner body is provided with the second injector, the dense fire hole, second mixing chamber It is sequentially connected with second injector logical.

Preferably, the outer housing forms multiple gaps between its opening and the outer wall of the inner housing, respectively The gap constitutes the dense fire hole.

Preferably, the burner is the catalytic burner for adding catalytic combustion layer.

Preferably, the inner core-body be bending part, the inner core-body include loading plate and be located at the loading plate The bending plate of two sides, the inner core-body are connected in the inner wall of the inner housing by the bending plate.

Preferably, the light fire hole is strip-shaped hole, and the strip-shaped hole includes bar shaped long hole and bar shaped short-bore, described Bar shaped long hole and the bar shaped short-bore are arranged side by side, and the length value of the bar shaped long hole is 3-6mm, the length of the bar shaped short-bore Angle value is 1.5-2.5mm.

It preferably, further include muti-piece connecting plate, the connecting plate is located at the upside of the light fire hole and is connected across The outer housing, each connecting plate are uniformly distributed along the length direction of the inner core-body.

In order to realize identical purpose, the utility model also proposed a kind of gas heater, including above-mentioned burner.

Implement the utility model embodiment, has the following beneficial effects:

1, for burner in burning, fuel enters the first mixing chamber, while the first injector injection by fuel injection orifice Surrounding air enter the first mixing chamber, be achieved in fuel and air mixing, the gaseous mixture hereafter obtained enter inner core chamber into One step mixing so that fuel mix with air it is more uniform, specifically, concurrent flow of the gaseous mixture in multistage gradual change mixing chamber Realize that air-flow collects in road, hereafter air-flow is dissipated by funneling opening, and multiple air-flow collects and air-flow diverging enables to Fuel mix with air it is more uniform so that light fire hole in formed stable and uniform light flame, fuel combustion is more abundant, Reduce the generation of CO and improve the utilization efficiency of fuel, compared with the existing technology in blower fan structure, the structure of the program Simpler and cost is lower, is readily put into market；In addition, Demountable is formed between inner housing and inner core-body, so that Total dismounting is easy to maintain, and light fire hole is arranged on inner core-body, so that the processing of light fire hole is more convenient, further Reduce production cost.

2, inner core-body is provided with turning, and turning is connected with the large diameter end of funneling opening, and gaseous mixture is in interior core cavity room When further being mixed, the gas shock turning of rapid flow, thus, it is possible to make fuel and air mixed effect more preferable.

3, the opening face of funneling opening and parallel fluid channels form angle theta, and the value range of angle theta is 15 ° -35 °, adopt Gaseous mixture is enabled to effectively to mix with above-mentioned angle theta, when angle is too small, the variation of air-flow is not obvious enough, but angle is excessive When, the flow velocity of gaseous mixture can be made excessive in opening decline, it is bad instead to mix with air effect so as to cause fuel, and adopt It is optimal technical scheme with above-mentioned angle.

4, the first mixing chamber is provided with the different chamber unit of multiple cross-sectional areas, and thus fuel is mixed with air first Intracavitary to have velocity variations, that is, being blended in big cross-sectional area chamber unit can slow down, and can be real in small cross-sectional area chamber Now accelerate, in the indoor deceleration of the first mixing chamber with acceleration so that fuel mixes with air better effect.

5, burner body is provided with outer housing, and the outer housing is socketed on the inner housing, the inner housing with it is described The second mixing chamber is formed between outer housing, and dense fire hole is provided between outer housing and inner housing, dense fire hole is located at light fire hole two sides, The structure of " dense-light-dense " is presented in entire flame, thus whole to reduce flame temperature, and then reduces nitrogen oxides (NO_X) row High-volume；First mixing chamber and the second mixing chamber enable to fuel to mix well with air, so that fuel combustion is more abundant, together When, dense fire hole is located at light fire hole two sides, and not sufficiently combusted fuel is further fired with the excess air in light flame in dense flame It burns, to guarantee full combustion of fuel, reduces the utilization rate for improving fuel while CO discharge.

6, burner is the catalytic burner for adding catalytic combustion layer, and the working principle for being catalyzed burning is to make by catalyst Organic exhaust gas carries out flameless combustion under lower initiation temperature, so that organic exhaust gas is decomposed into nontoxic carbon dioxide and water and steams Gas, the effect of catalyst are to reduce activation energy, while catalyst surface has suction-operated, and reactant molecule is made to be enriched in surface Reaction rate is improved, the progress of reaction is accelerated.Compared with conventional burners, auxiliary fuel needed for catalytic burner is few, Energy consumption is low, installations and facilities it is small in size, and be conducive to further decrease the generation of nitrogen oxides, it is more environmentally friendly.

7, the burner also further includes muti-piece connecting plate, and connecting plate is located at the upside of light fire hole and is connected across outer housing, respectively Connecting plate is uniformly distributed along the length direction of inner core-body, so that outer housing and inner housing are stably connected with.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of burner body in the utility model embodiment.

Fig. 2 is the cross section view at the A-A in Fig. 1.

Fig. 3 is the structural schematic diagram of inner core-body in the utility model embodiment.

Fig. 4 is the cross section view at the B-B in Fig. 3.

In figure: 100- burner body, 1- outer housing, 2- inner housing, the light fire hole of 3-, the dense fire hole of 4-, 5- first Mixing chamber, the second mixing chamber of 6-, the first injector of 7-, the second injector of 8-, 9- inner core-body, 10- connecting plate；91- is held Support plate, 92- bending plate, 93- inner core chamber, the turning 94-；93a- parallel fluid channels, the funneling opening of 93b-.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

It should be pointed out that in figure the gaseous mixture for being oriented to air, fuel or air and fuel of arrow flowing side To.

It should be understood that various information are described in the utility model using term " first ", " second " etc., but these Information should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from this In the case where utility model range, " first " information can also be referred to as " second " information, and similar, " second " information can also be with Referred to as " first " information.

As shown in Figures 1 to 4, the present embodiment provides a kind of burner, including burner body 100, the burner sheets Body 100 includes inner housing 2 and inner core-body 9, and the inner core-body 9 is installed on one end of the inner housing 2, and on the inner core-body 9 It is provided with light fire hole 3, inner core chamber 93 is provided in the inner core-body 9, the inner housing 2 is provided with the first mixing chamber 5, described Burner body 100 is provided with the first injector 7, the light fire hole 3, the inner core chamber 93, first mixing chamber 5 and institute State the first injector 7 be sequentially connected it is logical；The inner core chamber 93 includes multistage gradual change mixing chamber, and each gradual change mixing chamber wraps Parallel fluid channels 93a and funneling opening 93b are included, the funneling opening 93b includes large diameter end and small-caliber end, the osculum Diameter end is connected with one end of the parallel fluid channels 93a, and the large diameter end is arranged towards the light fire hole 3.

Based on above technical scheme, for burner in burning, fuel enters the first mixing chamber 5 by fuel injection orifice, together When 7 injection surrounding air of the first injector enter the first mixing chamber 5, be achieved in fuel and air mixing, what is hereafter obtained is mixed It closes gas and enters inner core chamber 93 and further mix, so that fuel mixes with air more uniform, specifically, gaseous mixture is more Realize that air-flow collects in the parallel fluid channels 93a of grade gradual change mixing chamber, hereafter air-flow is dissipated by funneling opening 93b, multiple Air-flow collect and air-flow diverging to enable to fuel to mix with air more uniform so that formed in light fire hole 3 stablize it is equal Even light flame, fuel combustion is more abundant, reduces the generation of CO and improves the utilization efficiency of fuel, relative to existing skill The structure of blower fan structure in art, the program is simpler and cost is lower, is readily put into market；In addition, inner housing 2 and inner core Demountable is formed between body 9, so that total dismounting is easy to maintain, and light fire hole 3 is arranged on inner core-body 9, by It is more convenient that this processes light fire hole 3, is further reduced production cost.

In the present embodiment, the inner core-body 9 is provided with turning 94, and the turning 94 is with the funneling opening 93b's Large diameter end is connected, and gaseous mixture is when interior core cavity room 93 is further mixed, the gas shock turning 94 of rapid flow, by This enables to fuel and air mixed effect more preferable.It should be pointed out that the turning 94 in the present embodiment be not located at it is light At fire hole 3, the mixed airflow thus near light fire hole 3 is more stable, to guarantee that gaseous mixture stablizes burning.

Preferably, the opening face of the funneling opening 93b and the parallel fluid channels 93a form angle theta, the angle theta Value range be 15 ° -35 °, enable to gaseous mixture effectively to mix using above-mentioned angle theta, when angle is too small, air-flow Change not obvious enough, but when angle is excessive, the flow velocity of gaseous mixture can be made excessive in opening decline, so as to cause fuel and empty Gas mixed effect is bad instead, and uses above-mentioned angle for optimal technical scheme.

In addition, first mixing chamber 5 is provided with the different chamber unit of multiple cross-sectional areas, thus fuel and air exist Have velocity variations in first mixing chamber 5, that is, being blended in big cross-sectional area chamber unit can slow down, and in small cross-sectional area chamber Interior can realize acceleration, and the deceleration in the first mixing chamber 5 and acceleration are so that fuel mixes with air better effect.

In the present embodiment, the burner body 100 is provided with outer housing 1, and the outer housing 1 is socketed on the inner casing Body 2, forms the second mixing chamber 6 between the inner housing 2 and the outer housing 1, and the outer housing 1 and the inner housing 2 it Between be provided with dense fire hole 4, the dense fire hole 4 is located at light 3 two sides of fire hole；The air-fuel of gaseous mixture in first mixing chamber 5 Than the air-fuel ratio for being greater than gaseous mixture in second mixing chamber 6, the burner body 100 is provided with the second injector 8, described Dense fire hole 4, second mixing chamber 6 and second injector 8 are sequentially connected logical.It should be pointed out that " light fire hole 3 " and " dense fire hole 4 " is that in contrast, light fire hole 3 generates light flame, and dense fire hole 4 generates dense flame, and " light flame combustion " and " dense Air needed for flame combustion " is different from the ratio of fuel, and the first injector 7 and the second injector 8 can provide according to demand The gaseous mixture of corresponding air-fuel ratio, gaseous mixture refer to the gaseous mixture of air and fuel, and " light flame combustion " configuration is more empty Tolerance, and " dense flame combustion " configures less air capacity, i.e. air-fuel ratio in the first mixing chamber 5 is greater than in the second mixing chamber 6 Air-fuel ratio.Based on above structure, light flame burns under excessive air, and light flame is wrapped up by excessive air and reduces temperature Degree, dense flame carry out imperfect combustion under anoxic conditions to reduce dense flame temperature, entire flame present " it is dense- It is light-dense " structure, it is thus whole to reduce flame temperature, and then reduce nitrogen oxides (NO_X) discharge amount；Meanwhile dense fire hole 4 Positioned at light 3 two sides of fire hole, not sufficiently combusted fuel can further burn with the excess air in light flame in dense flame, from And guarantee full combustion of fuel, reduce the utilization rate that fuel is improved while CO discharge.In addition, being with the forming process of light flame Example illustrates the course of work, and for burner in burning, fuel enters the first mixing chamber 5, while the first injection by fuel injection orifice 7 injection surrounding air of device enters the first mixing chamber 5, is achieved in fuel and air mixing, hereafter gaseous mixture enters light 3 shape of fire hole At light flame, the first injector 7 is different with the air capacity of 8 injection of the second injector, thus can form the mixing of different air-fuel ratios Gas, and then form light flame and dense flame.

Specifically, the outer housing 1 forms multiple gaps between its opening and the outer wall of the inner housing 2, each described Gap constitutes the dense fire hole 4.

Preferably, the burner is the catalytic burner for adding catalytic combustion layer, and catalytic burner refers to be fired in catalysis The device to burn in layer using catalyst or equipment are burnt, the working principle for being catalyzed burning is to make organic exhaust gas by catalyst Flameless combustion is carried out under lower initiation temperature, and organic exhaust gas is made to be decomposed into nontoxic carbon dioxide and vapor.With tradition Burner is compared, and auxiliary fuel needed for catalytic burner is few, and energy consumption is low, installations and facilities it is small in size, and be conducive into One step reduces the generation of nitrogen oxides, more environmentally friendly.

Wherein, the inner core-body 9 is bending part, and the inner core-body 9 is including loading plate 91 and is located at 91 liang of the loading plate The bending plate 92 of side, the inner core-body 9 are connected in the inner wall of the inner housing 2 by the bending plate 92, and inner core-body 9 is using folding Comer pieces, it is easy to process, and the bending plate 92 of two sides enables to inner core-body 9 to be steadily connected to the inner wall of inner housing 2, Jin Erbao 9 connection structure of inner core-body is demonstrate,proved to stablize.

In addition, the light fire hole 3 is strip-shaped hole, the processing of strip-shaped hole is more convenient, and each strip-shaped hole is along the loading plate 91 end face is in equidistant array distribution, it should be pointed out that the strip-shaped hole in the present embodiment is obtained using punching press, is thereby guaranteed that light Fire hole 3 it is of uniform size consistent so that light fire hole 3 generates stable light flame, greatly improve the reliability of flame combustion. Specifically, the light fire hole 3 is strip-shaped hole, and the strip-shaped hole includes bar shaped long hole and bar shaped short-bore, the bar shaped long hole and institute It states bar shaped short-bore to be arranged side by side, the length value of the bar shaped long hole is 3-6mm, and the length value of the bar shaped short-bore is 1.5- 2.5mm, and the preferred value of bar shaped long hole is 4.4mm in the present embodiment, the length value of bar shaped short-bore is 1.8mm.

Preferably, which also further includes muti-piece connecting plate 10, and the connecting plate 10 is located at the upper of the light fire hole 3 Side and it is connected across the outer housing 1, each connecting plate 10 is uniformly distributed along the length direction of the inner core-body 9, is thus made It obtains outer housing 1 and inner housing 2 is stably connected with.

In order to realize identical purpose, the present embodiment also provides a kind of gas heater, including above-mentioned burner, needs , it is noted that the burner can also be applied to burnt gas wall hanging furnace.

Using the gas heater and its burner of the utility model embodiment, for burner in burning, fuel passes through combustion Expect that jet port enters the first mixing chamber 5, while 7 injection surrounding air of the first injector enters the first mixing chamber 5, is achieved in combustion Material and air mixing, the gaseous mixture hereafter obtained enters inner core chamber 93 and further mixes, so that fuel mixes with air More uniform, specifically, gaseous mixture realizes that air-flow collects in the parallel fluid channels 93a of multistage gradual change mixing chamber, and hereafter air-flow is logical Cross funneling opening 93b diverging, multiple air-flow collect and air-flow diverging to enable to fuel to mix with air more uniform, from And making the light flame that stable and uniform is formed in light fire hole 3, fuel combustion is more abundant, reduces the generation of CO and improves combustion The utilization efficiency of material, compared with the existing technology in blower fan structure, the structure of the program is simpler and cost is lower, is easy to throw Enter market；In addition, Demountable is formed between inner housing 2 and inner core-body 9, so that total dismounting is easy to maintain, and Light fire hole 3 is arranged on inner core-body 9, so that light fire hole 3 is processed more convenient, is further reduced production cost.

In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "top", "bottom" etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change It also should be regarded as the protection scope of the utility model into replacement.

Claims (11)

1. a kind of burner, it is characterised in that: including burner body, the burner body includes inner housing and inner core-body, The inner core-body is installed on one end of the inner housing, and light fire hole is provided on the inner core-body, setting in the inner core-body There is inner core chamber, the inner housing is provided with the first mixing chamber, and the burner body is provided with the first injector, the light fire Hole, the inner core chamber, first mixing chamber and first injector are sequentially connected logical；The inner core chamber includes multistage Gradual change mixing chamber, each gradual change mixing chamber include parallel fluid channels and funneling opening, and the funneling opening includes big mouth Diameter end and small-caliber end, the small-caliber end are connected with one end of the parallel fluid channels, and the large diameter end is described in Light fire hole setting.

2. burner according to claim 1, it is characterised in that: the inner core-body is provided with turning, the turning and institute The large diameter end for stating funneling opening is connected.

3. burner according to claim 1, it is characterised in that: the opening face of the funneling opening and the concurrent flow Road forms angle theta, and the value range of the angle theta is 15 ° -35 °.

4. burner according to claim 1, it is characterised in that: first mixing chamber is provided with multiple cross-sectional area phases Different chamber unit.

5. burner according to claim 1, it is characterised in that: the burner body is provided with outer housing, described outer Shell is socketed on the inner housing, forms the second mixing chamber between the inner housing and the outer housing, and the outer housing with Dense fire hole is provided between the inner housing, the dense fire hole is located at the light fire hole two sides；Mixing in first mixing chamber The air-fuel ratio of gas is greater than the air-fuel ratio of gaseous mixture in second mixing chamber, and the burner body is provided with the second injector, The dense fire hole, second mixing chamber and second injector are sequentially connected logical.

6. burner according to claim 5, it is characterised in that: the outer housing is open outer with the inner housing at it Multiple gaps are formed between wall, each gap constitutes the dense fire hole.

7. burner according to claim 1, it is characterised in that: the burner is the catalysis combustion for adding catalytic combustion layer Burner.

8. burner according to claim 1, it is characterised in that: the inner core-body is bending part, and the inner core-body includes Loading plate and bending plate positioned at the loading plate two sides, the inner core-body are connected in the inner housing by the bending plate Inner wall.

9. burner according to claim 8, it is characterised in that: the light fire hole is strip-shaped hole, and the strip-shaped hole includes Bar shaped long hole and bar shaped short-bore, the bar shaped long hole and the bar shaped short-bore are arranged side by side, and the length value of the bar shaped long hole is 3-6mm, the length value of the bar shaped short-bore are 1.5-2.5mm.

10. burner according to claim 5, it is characterised in that: further include muti-piece connecting plate, the connecting plate is located at institute It states the upside of light fire hole and is connected across the outer housing, each connecting plate uniformly divides along the length direction of the inner core-body Cloth.

11. a kind of gas heater, it is characterised in that: including the described in any item burners of claims 1 to 10.