CN204084378U

CN204084378U - A kind of empty, full premix air intake structure of combustion gas

Info

Publication number: CN204084378U
Application number: CN201420394755.XU
Authority: CN
Inventors: 李克非
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-15
Filing date: 2014-07-15
Publication date: 2015-01-07
Anticipated expiration: 2024-07-15

Abstract

The purpose of this utility model is to provide a kind of easy production, sky, the full premix air intake structure of combustion gas that safe and reliable, compact conformation is attractive in appearance, this structure comprises upper tube half and lower tube half, upper lower tube half is the half of helix tube, pass through casting, group just defines a complete helix tube together, one end connects air intake blower fan, has gas inlet nearby from air intake blower fan, and the other end connects burner.The utility model casting efficiency is high, produces cost in enormous quantities low; Avoid weld seam to crack in the course of the work, thus avoid the potential safety hazard therefore brought; Sky, gas premixing are effective; Compact conformation, intensity are high, can reduce burner volume, promote burner quality.

Description

A kind of empty, full premix air intake structure of combustion gas

Technical field

The utility model relates to a kind of gas premixing air inlet pipe, especially a kind of device promoting gas burner sky, the full and uniform mixing of combustion gas.

Technical background

Existing gas burner air inlet is divided into partly-premixed air inlet and full premix air inlet two kinds.The former uses gas nozzle, air door, induction tunnel, relies on combustion gas injection that the partial air needed for burning is brought into, mixes, burnt, and in the partial air dependence combustion process needed for all the other, air obtains to the diffusion of flame.This partly-premixed structure is simple, but cannot ensure the optimal proportion of sky, combustion gas, and fuel gas buring is insufficient, wastes energy.The mode of this secondary air inlet produces a large amount of NO simultaneously _x, very large infringement is caused to environment.Moreover, the reduction that this combustion system can cause efficiency of combustion to be lost further along with the change of gaseous-pressure.In addition, this combustion system can not meet the demand of high-power burning.In order to improve utilization results of energy, more and more burner adopts full premix air intake structure.This structure has blower fan (have plenty of adjustable blower fan, have plenty of the blower fan of air distribution door), gas nozzle, proportioning valve, disturbed flow pipe composition, this structure only needs an air feed, ensure that the best combustion ratio of gas/air, improve efficiency of combustion, lower pollutant emission.The abundant mixing of its hollow, combustion gas ensures clean-burning key point, and mixing arrangement common at present has three kinds:

1, the air intake structure be made up of blower fan and Venturi tube, as shown in patent CN00260216.4;

2, mixing chamber is set and impels mixing, as shown in patent CN200610060139.0 of combustion gas and air;

3, be made up of blower fan and flow-disturbing coil pipe.

The first degree of carrying out combustion gas and air mixing near Venturi tube is inadequate, because do not have enough flow-disturbings; The second complex structure, cost are higher; The third common form was entered by metal tube to be repeatedly welded, and it is effective that this form mixes gas.But there is Railway Project in weld metal pipe: one, welding efficiency is low.A disturbed flow pipe needs multistage to weld formation bend pipe structure, and efficiency is lower.Two, disturbed flow pipe is positioned near burner, and working environment is comparatively severe, works long hours and weld seam may be caused to occur crackle, causes sky, combustion gas spilling, there is very large potential safety hazard.

Summary of the invention

In order to solve the problem, the purpose of this utility model is to provide a kind of easy production, sky, the full premix air intake structure of combustion gas that safe and reliable, compact conformation is attractive in appearance.

To achieve these goals, the technical scheme that the utility model is taked is:

A kind of empty, full premix air intake structure of combustion gas, comprises upper tube half and lower tube half.It is characterized in that: upper lower tube half is the half of helix tube, by casting, group just defines a complete helix tube together.Helix tube one end is used for connecing burner, one end for connecing air intake blower fan, has the perforate connecting fuel gas pipeline from air intake blower fan nearby;

Wherein: upper lower tube half can be fixed by screw, sealed by coated with high temperature glue or the asbestos pad of customization between semicanal;

Wherein: the tapping that helix tube inherence connects fuel gas pipeline is provided with spoiler;

Wherein: helix tube and burner junction arrange flange.

The beneficial effects of the utility model: casting efficiency is high, produce cost in enormous quantities low; Avoid weld seam to crack in the course of the work, thus avoid the potential safety hazard therefore brought; Sky, combustion gas mixing are effective; Compact conformation, intensity are high, can reduce burner volume, promote burner quality.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further described.

Fig. 1 is an assembling schematic diagram of the present utility model;

Fig. 2 is empty, combustion gas full premix air inlet pipe upper tube half inside;

Fig. 3 is empty, combustion gas full premix air inlet pipe upper tube half outside;

Fig. 4 is empty, combustion gas full premix air inlet pipe lower tube half inside;

Fig. 5 is empty, combustion gas full premix air inlet pipe lower tube half outside.

The flange that description of reference numerals: 1-is connected with burner; 2-gas outlet; 3-upper tube half adpting flange; 4-upper tube half air flue; 5 fuel gas inlet; 6-fan interface; 7-lower tube half adpting flange; 8 lower tube half air flues; 9-spoiler; 10-air intake blower fan; 11-burner.

Detailed description of the invention

As Figure 1-Figure 4, upper tube half flange 3 is connected by nut with lower tube half flange 7, in order to prevent gas leakage, can apply a small amount of high-temp glue or installing asbestos pad, defining whole air inlet pipe.Air inlet pipe one end is fan interface 6, and lower tube half has fuel gas inlet 5 nearby from air intake blower fan 10, has spoiler 9 herein in pipe.The other end of air inlet pipe has the flange 1 be connected with burner, is connected with burner 11 by this flange.Compared with conventional gas introduction pipe, the utility model structure is formed by connecting by casting, nut, has characteristic compact, attractive in appearance.

Claims

1. a sky, the full premix air intake structure of combustion gas, comprise upper tube half and lower tube half, it is characterized in that: upper lower tube half is the half of helix tube, pass through casting, group just defines a complete helix tube together, helix tube one end is used for connecing burner, the other end for connecing air intake blower fan, has the perforate connecting fuel gas pipeline from air intake blower fan nearby.

2. sky according to claim 1, the full premix air intake structure of combustion gas, is characterized in that: upper lower tube half can be fixed by screw, by coated with high temperature glue or the asbestos pad sealing of customization between semicanal.

3. sky according to claim 1, the full premix air intake structure of combustion gas, is characterized in that: the tapping that helix tube inherence connects fuel gas pipeline is provided with spoiler.

4. sky according to claim 1, the full premix air intake structure of combustion gas, is characterized in that: helix tube and burner junction arrange flange.