CN209495328U - Arc fire hole surface combustor single sheet and combustor thereof - Google Patents

Abstract

The utility model discloses an arc fire hole surface combustor single sheet, which comprises a fire grate shell and an arc fire hole panel, wherein the arc fire hole panel is positioned at the opening of the fire grate shell, and an injection pipe is formed in the fire grate shell through stamping; a burner is also disclosed. The utility model can reduce the volume heat intensity selected in the design, the fire hole heat intensity is lower, and the unstable pulsation of the heat release rate can be reduced when the design of a large-load and smaller combustion cavity is carried out; the arc fire hole surface shape forming requirement is low, the processing is easy, and the precision requirement is met; the saturation of the inner flame is high, the flame stability is good, and the disturbance resistance is strong; the airflow impact is small, the combustion noise is low, and the use comfort of a user can be improved to a great extent; the combustion is more sufficient, and the flue gas index is easy to control.

Description

Arc fire hole face burner monolithic and its burner

Technical field

The utility model belongs to technical field of burner, and in particular to a kind of arc fire hole face burner monolithic and its burning Device.

Background technique

Burner is one of the key components and parts in gas heater and gas heating stove, mainly promotes fuel and air Contact, mixing and the place that the reaction of violent heat release occurs, be exergonic important component that fuel is dived.Several fire row monolithics Assemble become burner assembly, the type of existing burner is more, can by primary air ratio, air supply mode and Gaseous-pressure distinguishes burner as classification foundation.

The main technical requirements of burner include: 1) burning more complete；

2) without de- fire and tempering phenomenon；

3) efficiency of combustion is higher, and each load section burning should stablize；

4) without obvious noise when working.

Current combustion device monolithic fire hole face form mainly has " V " shape fire hole face, trapezoidal fire hole face, plane mesh, " V " veil Hole etc..

Burner monolithic needs the die mould depth and fire hole width of strict control fire hole in design, because this is to combustion gas-sky The distribution of exit velocities of gas mixture has a significant impact, under conditions of fuel mixture component, concentration are certain: flame propagation speed It will appear tempering phenomenon (when speed difference is very big) when spending Sn > Vm (mixture mean flow rate)；As Sn < Vm, de- fire occurs, The shape of fire hole influences also very greatly this, and V-type strip fire hole internal flame is relatively thin, and flame stability is weaker, and external condition fluctuation is slightly larger When combustion conditions become severe；The mesh processing of mesh-type burner monolithic is cumbersome, and applicable elements are higher；And existing burner uses The burner monolithic of these types of form be easy to cause to release in the number that rise higher, smaller combustion volume chamber product development and design Heating rate erratic fluctuations causes system burning concussion, to the usage experience that user is very poor.

Utility model content

In view of this, the main purpose of the utility model is to provide a kind of arc fire hole face burner monolithic and its burnings Device.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

The utility model embodiment provides a kind of arc fire hole face burner monolithic, including fire row shell, arc fire hole panel, The arc fire hole panel is located at the opening of fire row shell, and the fire row shell is interior by being stamped and formed out ejector pipe.

In above scheme, the arc fire hole panel is along two groups of labyrinth type arc fire holes of setting substantially symmetrical about its central axis.

In above scheme, the ejector pipe successively includes air inlet collapsible tube, mixing trunnion, diffusion from air inlet to gas outlet Pipe.

In above scheme, the fire row shell is formed by two shells by snapping.

In above scheme, the arc fire hole panel is fixed by welding in the opening of fire row shell.

The utility model embodiment also provides a kind of burner, including burner box, setting in the burner box body Multiple arc fire hole face burner monolithics as described in any one of above scheme connected side by side.

In above scheme, the multiple arc fire hole face burner monolithic is fixed in burner box body by fixed frame.

Compared with prior art, the utility model can reduce the liberation selected when design, thermal intensity of fire port compared with It is low, in the unstable pulsation for carrying out can reduce heat release rate when the design of big load, smaller burning cavity；Arc fire hole face is formed Shape require it is lower, it is easy to process and meet required precision；Internal flame saturation degree is higher, and flame holding is good, and disturbance rejection is strong；Air-flow It impacts that small, combustion noise is low, can largely improve user's comfort；It burns more abundant, fume indication is easy to control System.

Detailed description of the invention

Fig. 1 provides a kind of structural schematic diagram of arc fire hole face burner monolithic for the utility model embodiment；

Fig. 2 provides a kind of vertical view partial structurtes signal of arc fire hole face burner monolithic for the utility model embodiment Figure；

Fig. 3 is sectional view along A-A in Fig. 2；

Fig. 4 is the comparison schematic diagram in the arc fire hole face of the utility model and the V shape fire hole face of the prior art；

Fig. 5 is the burning comparison schematic diagram in the arc fire hole face of the utility model and the V shape fire hole face of the prior art；

Fig. 6 provides a kind of structural schematic diagram of burner for the utility model embodiment.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

The utility model embodiment provides a kind of arc fire hole face burner monolithic, as shown in Figure 1-3, include fire row shell 1, Arc fire hole panel 2, the arc fire hole panel 2 are located at the opening of fire row shell 1, pass through in the fire row shell 1 and be stamped and formed out Ejector pipe 11.

The arc fire hole panel 2 is along two groups of labyrinth type arc fire holes 21 of setting substantially symmetrical about its central axis.

The ejector pipe 11 successively includes air inlet collapsible tube 111, mixing trunnion 112, diffuser pipe from air inlet to gas outlet 113。

The fire row shell 1 is formed by two shells by snapping.

The arc fire hole panel 2 is fixed by welding in the opening of fire row shell 1.

(there is a die mould depth d) in the V shape fire hole face of the arc fire hole panel 2 of the utility model compared with the prior art, originally Utility model is capable of providing biggish fire hole area.

The comparative analysis in the V shape fire hole face of the utility model and the prior art

1) as shown in figure 4, can determine that it is same according to the geometrical relationship formula of arc fire hole panel 2 and the face V of the prior art Length relation at one section is that its fire hole area can determine under same fire hole m.

The R cambered surface burner section face approximate length > V burner section approximate length is that then (Fp is fire hole to Fpr > Fpv The gross area), because of Fp=Q/Qp, under same thermal load conditions, can choose lesser Qp (i.e. thermal intensity of fire port), while basis Thermal intensity of fire port Qp and fire hole exit velocity relationship are as follows:

Vp=Qp/Hl*10e6

The adjustable section of exit velocity Vp becomes larger, so that reducing tempering and the optimized scope increase from flame, is conducive to selection and closes Suitable gas outlet pressure value and nozzle injection distance.

2) relationship of pressure value and exit velocity according to needed for combustion gas before burner:

Pressure value h is proportional to square of fire hole exit velocity Vp, to can reduce by two in the design of pressure value selection Secondary pressure value, but therefore its combustion intensity and efficiency can't reduce, have promotion to the adequacy of burning, fume indication instead； Second, lower gas secondary pressure value can be substantially reduced by external condition and a pressure fluctuations, i.e., may go out originally Existing pressure range value out of stock also can be with reduction, this greatly improves the applicability of complete machine, comfort and reliability；Its Three, the secondary pressure and lesser fire hole exit velocity for reducing combustion gas can significantly reduce the noise of flow perturbation generation, Reduce operating noise.

3) in the case where same mixture velocity remains unchanged, the flame in arc fire hole face and V shape fire hole face burner Difference: as shown in figure 5, A1 at line A-A is the air-gas mixture exit point in V shape fire hole face, and for arc fire hole Sky-burning mixt exit point of the face at line A-A is A2, under conditions of gas flow rate identical (Vv=Vr), sky-burning mixt Flow distance lv > lr, Tv > Tr (T consumes when being mixture movement to fire hole face/disengaging fire hole face), fire hole face is along fire The position of the ignition point of flame axis direction is respectively A1, A2, and transversely the difference of lAxBx is gradually reduced.After incendiary source kindling, arc Face fire hole face moment kindling area N is greater than the kindling area M in V shape fire hole face, i.e. internal flame area is bigger, and internal flame is combustible premix Combustion reaction formation is carried out, is played a decisive role to the stability of whole flame, internal flame length also reflects mixture simultaneously The abundant degree of burning, stability when being influenced by extraneous factor；It can be seen that the internal flame of cambered surface fire hole is more saturated, flame holding More excellent, combustion conditions are more stable when being influenced by variable disturbance factor.

4) biggish fire hole area Fpr ensure that the flowing of sky-burning mixt air-flow is smooth, reduce the momentum of mixture/ Drag losses are conducive to full combustion.Secondly as Tv > Tr, this then indicate on the other hand after mixture is detached from fire hole Time of contact of flame envelope zone of flammability increases, and remaining sky-burning mixt that internal flame is imperfect combustion then can sufficiently and auxiliary air It is reacted, improves efficiency of combustion.

5) flue gas emission index is also that the important evidence of measurement is had excellent performance to burner monolithic, overwhelming majority combustion hot product Flue gas it is exceeded be substantially due to the problem of burner itself caused by.One is one or two secondary control air quantity of burner body and Ratio influences the adequacy and stability of burning；The second is burner monolithic fire hole size, position, structure, fire hole structure size Etc. factors these on the flow velocity of mixture, streamline distribution and drag losses by very big influence, simultaneously for flame combustion state, Contact adequacy equally influences very big.From structure, cambered surface fire hole is smaller compared to its flow losses of V-type, for not opening Gas shock at fire hole is significantly less than the face V type fire hole monolithic, and the loss of momentum also drops therewith also with reduction, impact noise It is low.

To sum up, the V-type fire control face of the utility model compared with the existing technology is low with calorific intensity, burning is more abundant, flame More stable feature.

The utility model embodiment also provides a kind of burner, as shown in fig. 6, including burner box 3, the burner The multiple arc fire hole face burner monolithics 4 connected side by side of setting in cabinet 3.

The multiple arc fire hole face burner monolithic 4 is fixed in burner box 3 by fixed frame 5.

The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model Range.

Claims (7)

1. a kind of arc fire hole face burner monolithic, which is characterized in that described including fire row shell (1), arc fire hole panel (2) Arc fire hole panel (2) is located at the opening of fire row shell (1), and the fire row shell (1) is interior by being stamped and formed out ejector pipe (11).

2. arc fire hole according to claim 1 face burner monolithic, which is characterized in that the arc fire hole panel (2) Along two groups of labyrinth type arc fire holes (21) of setting substantially symmetrical about its central axis.

3. arc fire hole according to claim 1 or 2 face burner monolithic, which is characterized in that the ejector pipe (11) from Air inlet successively includes air inlet collapsible tube (111), mixing trunnion (112), diffuser pipe (113) to gas outlet.

4. arc fire hole according to claim 3 face burner monolithic, which is characterized in that the fire row shell (1) is by two Shell is formed by snapping.

5. arc fire hole according to claim 4 face burner monolithic, which is characterized in that the arc fire hole panel (2) It is fixed by welding in the opening of fire row shell (1).

6. a kind of burner, which is characterized in that including burner box (3), setting is multiple side by side in the burner box (3) The arc fire hole face burner monolithic (4) as described in claim 1-5 any one of connection.

7. burner according to claim 6, which is characterized in that the multiple arc fire hole face burner monolithic (4) is logical Fixed frame (5) is crossed to be fixed in burner box (3).