CN102359727A

CN102359727A - Injection impeller burner

Info

Publication number: CN102359727A
Application number: CN201110213194XA
Authority: CN
Inventors: 王平; 程继波
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-24
Filing date: 2011-07-18
Publication date: 2012-02-22

Abstract

The invention discloses an injection impeller burner, and in particular relates to a civil gas cooker. The burner comprises a spray pipe (9), an injection pipe (3), an impeller (5) and a burning head (6), wherein a shaft bracket (4) is arranged in the injection pipe (3) and provided with an impeller shaft (7); the impeller (5) is arranged on the impeller shaft (7) and can freely rotate relative to the shaft bracket (4); the injection pipe (3) is fixedly connected with the shaft bracket (4); and an impeller axis (8) is overlapped with an injection pipe central line (10). When gas (1) at a certain flow velocity is injected from the spray pipe (9) and enters the injection pipe together with injected air (2) simultaneously to push the impeller (5) jointly to quickly stir in a rotary mode, so that the gas (1) and the air (2) are fully and uniformly mixed at the moment of passing through the impeller (5), and the gas and the injected required theoretical air are distributed in each burning hole of the burning head in the same ratio and enter the burning head (6) to be burnt; therefore, the burning heat efficiency of the injection burner is obviously improved.

Description

Injection type impeller burner

Technical field:

The present invention relates to a kind of injection type impeller burner, injection type impeller burner is mainly used in the middle of the burner of products such as household gas range, commercial gas-fired stove (case), domestic gas-fired water heater.

Background technology:

Divide burner according to the air inlet mode, it mainly can be divided into two big types: one type is injection burner, and another kind of is air blast burner.When the combustion gas heat flow is excessive, the bulky heaviness of injection burner, and the air blast burner volume is less relatively, the large scale industry boiler often uses air blast burner.

1855 is exactly laboratory Bunsen burner commonly used by the clear a kind of injection burner of this hair tonic (or claiming atmospheric burner), and this injection burner is simple in structure; It is mainly by exhaust gas nozzle, and induction tunnel and combustion head three parts are formed, and its operation principle is: combustion gas is under certain pressure; Penetrate from jet pipe with certain flow rate; Some air that combustion gas leans on the energy of itself to suck in the ambient atmosphere get into induction tunnel, and combustion gas mixes with air in induction tunnel, get into the combustion head burning then.

Fuel gas buring is divided into completing combustion and non-completing combustion, approaches completing combustion more, and combustion thermal efficiency is just high more, and toxic emission is just low more, wants to realize that injection burner completing combustion need satisfy two necessary conditions:

1, combustion gas needs injection to advance required theoretical air requirement, to guarantee that (for example: during natural gas completing combustion, the ratio of amount of natural gas and required theoretical air requirement is 1: 9.52 in completing combustion.)。

2, combustion gas with must full and uniform the mixing by the air of injection, to guarantee gas quantity and each burner port that is distributed in combustion head by the required theoretical air requirement of injection by same ratio.

The major advantage of injection burner is: combustion gas heat flow adjustable range is wide, combustion gas can injection the required enough air of burning, when gas quantity occurs increasing or reduces, also increased thereupon or reduce by the air capacity of injection.

The outstanding shortcoming of injection burner is: combustion gas with by the air of injection mainly be lean on self flow and the gas laminar flow between molecular diffusion realize mixing; So it is maximum at induction tunnel near axis gas quantity, air capacity is minimum; From induction tunnel axis gas quantity far away just more less, air capacity is just many more; Combustion gas with can not full and uniformly be mixed by the air of injection, make gas quantity and can not be distributed in each burner port of combustion head by same ratio by the required theoretical air requirement of injection, cause each burner port burning of combustion head insufficient; Combustion thermal efficiency is low, and discharge amount of exhaust gas is high.

Though the injection burner thermal efficiency is lower, its combustion gas heat flow adjustable range is wide, flameholding, be born from its is widely used so far always, the burner of for example present household gas range both domestic and external the inside, employing all be the injection burner structure.

Summary of the invention:

The invention provides a kind of combustion gas in induction tunnel can the full and uniform injection type impeller burner that mixes with air.

The present invention to solve the problem that injection burner exists and be: injection burner is when burning; Combustion gas with can not full and uniformly be mixed by the air of injection; Make gas quantity and each burner port that can not be distributed in combustion head by the required theoretical air requirement of injection by same ratio; The combustion thermal efficiency that is caused is low, the technical barrier that discharge amount of exhaust gas is high.

The technical scheme that the present invention adopted is: described injection type impeller burner, comprise jet pipe, induction tunnel, impeller and combustion head, and be provided with bracing strut in the induction tunnel; Bracing strut is provided with impeller shaft; Impeller shaft is provided with impeller, and blade on the impeller and impeller axis angle are 45 °, and impeller can freely rotate with respect to bracing strut; Induction tunnel is to be fixedly connected with bracing strut, impeller axis and induction tunnel central lines.

Beneficial effect of the present invention; Described injection type impeller burner; When the combustion gas that has certain flow rate penetrate from jet pipe with got into induction tunnel simultaneously by the air of injection after, promote impeller jointly and rotate stirring fast, make combustion gas and accomplished full and uniform the mixing by the air of injection moment the time through impeller; Make gas quantity and be distributed in each burner port of combustion head by same ratio, thereby realize completing combustion by the required theoretical air requirement of injection.Described impeller adopts little nonmetallic materials or the metal material manufacturing of density, so the impeller quality is very little, and can quick rotation to guarantee to blow down still at little airflow very; Leave spacing between blade and the blade; And air supply direction and combustion gas and consistent by the air-flow direction of injection during blade rotation, so impeller can be ignored to combustion gas and minimum by the influence of the air inlet amount of injection; The present invention has remarkable effect to the combustion thermal efficiency that improves injection burner; Especially to improving the low-pressure injection formula burner combustion thermal efficiency, better effects if, and practical, simple in structure, be easy to make and application.

Description of drawings:

Fig. 1 is a structural scheme of mechanism of the present invention;

Fig. 2 looks structural scheme of mechanism for impeller of the present invention and impeller shaft master;

Fig. 3 overlooks structural scheme of mechanism for Fig. 2 of the present invention;

The specific embodiment:

Below in conjunction with accompanying drawing the present invention is described in detail.

Like Fig. 1, Fig. 2, shown in Figure 3, injection type impeller burner comprises jet pipe 9, induction tunnel 3, impeller 5 and combustion head 6; Be provided with bracing strut 4 in the induction tunnel 3, bracing strut 4 is provided with impeller shaft 7, and impeller shaft 7 is provided with impeller 5; Described impeller 5 can freely rotate with respect to bracing strut 4; Described induction tunnel 3 is to be fixedly connected with bracing strut 4, and the blade 11 on the impeller 5 is 45 ° with impeller axis 8 angles, and impeller axis 8 overlaps with induction tunnel center line 10.

Can be provided with two impellers 5 on the impeller shaft 7.

Whenever can repeat to be provided with that bracing strut 4, bracing strut 4 are provided with impeller shaft 7, impeller shaft 7 is provided with impeller 5 in the induction tunnel 3 at a distance from an intersegmental distance.

Blade 11 on the impeller 5 can have a plurality of.

After the combustion gas that has certain flow rate 1 gets into induction tunnel 3 from jet pipe 9 ejaculations with the air 2 that is advanced by injection simultaneously; The common impeller 5 that promotes rotates stirring fast; Make combustion gas 1 and air 2 moment the time accomplish full and uniform the mixing, get into combustion head 6 burnings then through impeller 5.

Claims

1. injection type impeller burner; Comprise jet pipe (9), induction tunnel (3) and combustion head (6); It is characterized in that being provided with bracing strut (4) in the said induction tunnel (3), bracing strut (4) is provided with impeller shaft (7), and impeller shaft (7) is provided with impeller (5); Described impeller (5) can freely rotate with respect to bracing strut (4), and described induction tunnel (3) is to be fixedly connected with bracing strut (4).

2. injection type impeller burner according to claim 1 is characterized in that the blade (11) on the said impeller (5) is 45 ° with impeller axis (8) angle.

3. injection type impeller burner according to claim 1 is characterized in that said impeller axis (8) overlaps with induction tunnel center line (10).

4. injection type impeller burner according to claim 1 is characterized in that said impeller shaft (7) is provided with two impellers (5).

5. injection type impeller burner according to claim 1 is characterized in that whenever repeating to be provided with bracing strut (4) at a distance from a segment distance in the said induction tunnel (3), and bracing strut (4) is provided with impeller shaft (7), and impeller shaft (7) is provided with impeller (5).

6. injection type impeller burner according to claim 1 is characterized in that the blade (11) on the said impeller (5) has a plurality of.