CN203980281U - A Burner with Improved Air Injection - Google Patents

Abstract

A burner for improving air injection comprises a burner head, a distributor base, an inner ring fire cover, an outer ring fire cover, an ignition needle and a thermocouple, and also comprises a seat frame, an air inlet interface, a nozzle and a pressurizing mixing piece which are arranged at the air inlet ends of the inner and outer injection pipes; the seat frame comprises a seat body, a support arranged at one end of the seat body and an interface arranged at the other end of the seat body; the support is provided with a large internal threaded hole and a small internal threaded hole, and the small internal threaded hole is opposite to the interface; the diameter of the large internal threaded hole is larger than that of the small internal threaded hole; the air inlet interface is screwed with the large internal threaded hole, and the nozzle is screwed with the small internal threaded hole; the pressurizing mixing piece is arranged in the interface, one end of the pressurizing mixing piece is positioned in a space between the interface and the support, and the other end of the pressurizing mixing piece is positioned in the inner injection pipe and the outer injection pipe; the interface is inserted with the inner injection pipe and the outer injection pipe. Due to the adoption of the structure, the gas enters the nozzle, is pressurized and then is sprayed out at high speed, and the gas and the air are fully mixed. Thereby achieving the effects of saving energy and reducing the exhaust emission.

Description

A Burner with Improved Air Injection

technical field

The utility model relates to a household gas burner.

Background technique

In the current prior art, a household gas burner includes a burner head, a fire distributor seat, an inner ring fire cover, an outer ring fire cover, an ignition needle and a thermocouple, and the burner head includes a body, an inner injector tube and an outer injector tube , the body has an inner air outlet pipe and an outer ring air outlet groove; the fire distributor seat has an inner ring fire cover, an outer ring fire cover and radial secondary air holes; the inner and outer ring fire covers are respectively connected to the inner seat and the outer ring seat fit. The problem is that the gas and air are not mixed evenly and the combustion is not complete.

Utility model content

The purpose of this utility model is: to provide a burner with improved air injection, which has the characteristics of uniform mixing of gas and air, sufficient air, and high speed of air and gas mixture.

The utility model is achieved in the following way: a burner with improved air ejection, comprising a burner head, a fire distribution seat, an inner ring fire cover, an outer ring fire cover, an ignition needle and a thermocouple, and the burner head includes a body, an inner ejector There is an inner air outlet pipe and an outer ring air outlet groove on the body; an inner ring fire cover, an outer ring fire cover and radial secondary air holes are arranged on the fire distributor seat; the inner and outer ring fire covers are respectively Cooperate with the inner seat and the outer ring seat; its special feature is that it also includes a seat frame, an air inlet port, a nozzle and a pressurized mixing piece arranged at the inlet ends of the inner and outer injection pipes;

The seat frame includes a seat body, a support arranged at one end of the seat body and an interface arranged at the other end of the seat body; a large internal thread hole and a small internal thread hole are arranged on the support, and the small internal thread hole is opposite to the interface; The diameter of the threaded hole is larger than the diameter of the small internal threaded hole;

The air inlet interface is screwed into the large internal threaded hole, and the nozzle is screwed into the small internal threaded hole; the pressurized mixing part is arranged in the interface, one end is located in the space between the interface and the support, and the other end is located in the inner injection pipe and the outer injection tube; the interface is plugged with the inner injection tube and the outer injection tube.

The special feature of the improved air injection burner is that: the nozzle is sequentially distributed with a truncated conical contraction section, a cylindrical compression section and a cylindrical diffusion section from the inlet end to the air outlet end;

The pressurized mixing element includes a truncated conical constricting mixing section and a truncated conical diffusing section;

The cylindrical diverging section of the nozzle is opposed to the frustoconical converging mixing section of the pressurized mixing element.

The above-mentioned improved air-injection burner is special in that: the base of the interface has an annular slot;

The ends of the inner and outer injection pipes are embedded in the annular slot.

The above-mentioned burner with improved air injection is special in that there is an annular concave cavity between the inner seat and the outer ring seat of the fire distributor seat, and the radial secondary air hole passes through two adjacent The fire distributor seat between the axial air holes communicates with the annular concave cavity; the ignition needle passes through the body of the burner and the bottom plate of the annular concave cavity and extends into the annular concave cavity.

The above-mentioned burner with improved air injection is special in that: the intersection point of the axis of the combustion hole on the peripheral wall of the internal fire device and the axis of the inner ring fire cover is located below the plane where the gas outlet end of the combustion hole is located; There is a radial fire deflector on the top of the inner ring fire cover, and the fire deflector is located above the ignition needle;

The intersection of the axis of the outer combustion hole on the outer ring wall of the outer ring fire cover and the axis of the outer firearm is located below the plane where the gas outlet of the outer combustion hole is located;

There is a fire starting groove on the top plate of the outer ring fire cover, and the fire starting groove intersects with an outer combustion hole; the fire starting groove and the fire guiding plate are on a straight line.

The utility model is an improved air injection burner. Due to the adoption of such a structure, the gas is pressurized after entering the nozzle, and then ejected at a high speed. The gas ejected at a high speed enters the pressurized mixing part together with the air. In the mixing part, contraction and pressurization are carried out and mixed, and then released to promote further mixing of gas and air, and then quickly enter the inner seat and outer ring seat for combustion of the inner and outer firearms. From achieving energy saving and reducing exhaust emissions.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a sectional view of the utility model.

Fig. 3 is the A-A view of Fig. 2 .

Fig. 4 is a three-dimensional exploded view of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a burner with improved air injection includes a burner head 1, a fire distributor seat 2, an inner ring fire cover 3, an outer ring fire cover 4, an ignition needle 5 and a thermocouple 10, and the burner head 1 includes Body 11, inner injection pipe 12 and outer injection pipe 13, inner air outlet pipe 111 and outer ring air outlet groove 112 are arranged on the main body 11; inner seat 21, outer ring seat 22, radial two Secondary air holes 23 and axial air guide holes 24, radial secondary air holes 23 are located on the fire distributor seat 2 between two adjacent axial air guide holes 24; Ring seat 22 cooperates.

It also includes a seat frame 6, an air inlet port 7, a nozzle 8 and a pressurized mixing piece 9 arranged at the inlet ends of the inner and outer injection pipes 12 and 13;

The seat frame 6 includes a seat body 61, a support 62 arranged at one end of the seat body 61 and an interface 63 arranged at the other end of the seat body; a large internally threaded hole 621 and a small internally threaded hole 622 are arranged on the support 62, and the small internally threaded hole 622 is arranged on the small internally threaded hole. The threaded hole 622 is opposite to the interface 63; the diameter of the large internally threaded hole 621 is greater than the diameter of the small internally threaded hole 622;

The air inlet port 7 is screwed with the large internal threaded hole 621, and the nozzle 8 is threaded with the small internal threaded hole 622; the pressurized mixing element 9 is arranged in the port 63, and one end is located in the space between the port 63 and the support 62 , and the other end is located in the inner injection tube 12 and the outer injection tube 13; the interface 63 is inserted into the inner injection tube 12 and the outer injection tube 13. The axes of the nozzle 8 and the pressurized mixing element 9 are aligned.

The nozzle 8 is sequentially distributed with a truncated conical constriction section 81, a cylindrical compression section 82 and a cylindrical diffusion section 83 from the air inlet end to the air outlet end;

The pressurized mixing element 9 includes a truncated conical contracting mixing section 91 and a truncated conical diffusing section 92;

The cylindrical diverging section 81 of the nozzle 8 is opposed to the frusto-conical converging mixing section 91 of the pressurized mixing element 9 .

The base of the interface 63 has an annular slot 631;

The ends of the inner and outer injector tubes 12 and 13 are inserted into the annular locking groove 631 .

As a further improvement: there is an annular cavity 25 between the inner seat 21 and the outer ring seat 22 of the fire distributor seat 2, and the radial secondary air hole 23 passes through the fire distributor seat between two adjacent axial air holes 24 It communicates with the annular cavity 25 ; the ignition needle 5 protrudes into the annular cavity 25 through the body of the burner 1 and the bottom plate of the annular cavity 25 . The thermocouple 10 extends into the annular cavity 25 through the body of the furnace head 1 and the bottom plate of the annular cavity 25 .

The axis of the combustion hole 31 on the circumferential wall of the described interior firearm 3 and the intersection point of the axis of the interior firearm 3 are located below the plane where the outlet of the combustion hole 31 is located; as shown in Figure 1, the top of the interior firearm 3 has a diameter To the fire guide plate 32, the fire guide plate 32 is located above the ignition needle 5;

The intersection of the axis of the outer combustion hole 41 on the outer ring wall of the outer firearm 4 and the axis of the outer firearm 4 is located below the plane where the gas outlet of the outer combustion hole 41 is located;

The top plate of the outer fire distribution device 4 has a fire guiding groove 42, which intersects with an outer combustion hole 41; the fire guiding groove 42 and the fire guiding plate 32 are on a straight line.

What has been described above is only the preferred implementation of the present utility model. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the utility model, which are also regarded as the protection scope of the utility model.

Claims (5)

1. A burner with improved air injection, including a burner head, a fire distributor seat, an inner ring fire cover, an outer ring fire cover, an ignition needle and a thermocouple, and the burner head includes a body, an inner injection tube and an outer injection tube , the body has an inner air outlet pipe and an outer ring air outlet groove; the fire distributor seat has an inner seat, an outer ring seat and radial secondary air holes; the inner and outer ring fire covers are respectively matched with the inner seat and the outer ring seat; It is characterized in that: it also includes a seat frame, an air inlet interface, a nozzle and a pressurized mixing piece arranged at the inlet ends of the inner and outer injection pipes; The seat frame includes a seat body, a support arranged at one end of the seat body and an interface arranged at the other end of the seat body; a large internal thread hole and a small internal thread hole are arranged on the support, and the small internal thread hole is opposite to the interface; The diameter of the threaded hole is larger than the diameter of the small internal threaded hole; The air inlet interface is screwed into the large internal threaded hole, and the nozzle is screwed into the small internal threaded hole; the pressurized mixing part is arranged in the interface, one end is located in the space between the interface and the support, and the other end is located in the inner injection pipe and the outer injection tube; the interface is plugged with the inner injection tube and the outer injection tube. 2. An improved air injection burner according to claim 1, characterized in that: the nozzle is sequentially distributed with a frustum-shaped constriction section, a cylindrical compression section and a cylindrical diffuser section from the air inlet end to the air outlet end ; The pressurized mixing element includes a truncated conical constricting mixing section and a truncated conical diffusing section; The cylindrical diverging section of the nozzle is opposed to the frustoconical converging mixing section of the pressurized mixing element. 3. An improved air injection burner according to claim 1 or 2, characterized in that: the base of the interface has an annular slot; The ends of the inner and outer injection pipes are embedded in the annular slot. 4. An improved air injection burner according to claim 1 or 2, characterized in that: there is an annular concave cavity between the inner ring fire cover and the outer ring fire cover on the fire distributor seat, radially The secondary air hole communicates with the annular concave cavity through the fire distributor seat between two adjacent axial air guide holes; the ignition needle extends into the annular concave cavity through the body of the burner and the bottom plate of the annular concave cavity. 5. A burner with improved air injection according to claim 4, characterized in that: the intersection point of the axis of the combustion hole on the circumferential wall of the inner ring fire cover and the axis of the inner ring fire cover is located at the gas outlet end of the combustion hole Below the plane; the top of the inner ring fire cover has a radial fire deflector, and the fire deflector is located above the ignition needle; The intersection of the axis of the outer combustion hole on the outer ring wall of the outer ring fire cover and the axis of the outer ring fire cover is located below the plane where the gas outlet of the outer combustion hole is located; There is a fire ignition groove on the top plate of the outer ring fire cover, and the fire ignition groove intersects with an outer combustion hole; The fire groove and the fire deflector are in a straight line.