CN210107390U - Full premix burner - Google Patents

Abstract

The utility model discloses a full premix combustor, including ignition needle, response needle and seedling fire stick and by last ignition circle, fire engine, divertor, the premix cavity that sets up in order under to, the divertor cover is established mix in advance in the cavity, ignition needle, response needle and seedling fire stick set up and are running through mix in advance on the outer lane of cavity and fire engine, the medial surface bottom of ignition circle is seted up and is hidden the space that shelters from of the ignition head of ignition needle, the syringe needle of response needle and seedling fire stick. The bottom of the premixing cavity is connected with a main air inlet pipe and a plurality of air inlet holes are formed in the premixing cavity, so that balanced and full premixing of air inlet is achieved; then, the air speed is reduced through a gap between the fluid director and the bottom of the igniter, so that the noise is lower when the furnace end is combusted, the combustion is more sufficient, and the energy is saved; the overflow cover is added in the center of the igniter, so that the flame distribution is more uniform, and silt and overflow are difficult to flow into the overflow hole to cause blockage.

Description

Full premix burner

Technical Field

The utility model relates to a gas-cooker technical field, concretely relates to full premix combustor.

Background

The traditional burner has large noise, large gas consumption, short service life and easy deformation after long-term burning; uneven fire, not violent fire, not high flame temperature; the combustion is insufficient, the discharge amount of carbon monoxide exceeds the standard, and the influence on the health of kitchen workers is great; the ignition needle and the induction needle are exposed outside and are easy to damage by 'quenching' when meeting water at high temperature; the furnace core is easy to accumulate water and block, and normal use is affected.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects of the prior art, the utility model provides a high-efficient energy-saving full premix burner which can solve the problems of accumulated water in a furnace core, insufficient combustion, short service life and the like.

The technical scheme is as follows: the full premix burner comprises an ignition needle, an induction needle, a seedling fire rod, a firing ring, a igniter, a fluid director and a premix chamber, wherein the firing ring, the igniter, the fluid director and the premix chamber are sequentially arranged from top to bottom; the bottom of the inner side surface of the ignition ring is provided with a shielding space for hiding the ignition needle head, the induction needle head and the end part of the seedling fire rod.

Preferably, the burner further comprises an overflow device for draining water, the overflow device comprises an overflow pipe and an overflow hole, the overflow pipe penetrates through the igniter, the flow guider and the premixing chamber, and the lower end of the overflow pipe is fixed and penetrates through the bottom of the premixing chamber.

Preferably, the fire arm still includes fire arm inner circle and spillway hole, the fire arm inner circle is the cylindricality structure, the spillway hole is seted up in the center of fire arm inner circle, the upper end of spillway pipe is pegged graft in the spillway hole.

Preferably, a plurality of air inlets are formed in the bottom of an enclosed space formed in an inner cavity of the premixing cavity along the circumference, and openings of the air inlets are in a slope shape, so that gas and air rotate anticlockwise when entering the premixing cavity, the wind speed is higher, and premixing is more sufficient.

Preferably, the combustor further comprises an overflow cover, wherein the overflow cover is in a round table shape and is sleeved on the inner ring of the igniter.

Preferably, the divertor include with fire arm complex horn mouth upper end and cylinder tail end, cylinder tail end axial cover is established in premix the chamber, leave certain clearance between fire arm lower extreme and the divertor upper end horn mouth.

Preferably, the induction needle, the ignition needle and the pilot fire are all arranged on the outer ring of the igniter and penetrate through the premixing chamber; the bottom of the inner side surface of the ignition ring is provided with a shielding space for hiding the ignition needle head, the induction needle head and the seedling fire.

Preferably, the ignition ring and the igniter are made of nodular graphite alloy.

Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: 1. the full premix burner is made of nodular alloy, does not deform, does not crack and resists high temperature; 2. gas and air enter the main air inlet pipe to be premixed for the first time, then are premixed for the second time through the three slope-shaped air inlet holes, and the gas rotates anticlockwise in the cavity, so that the premixing is more sufficient. After the mixed gas passes through the gap between the lower end of the igniter and the bell mouth at the upper end of the fluid director, the wind speed is reduced, the noise is lower when the burner is burning, the burning is more sufficient, and the energy is saved; 3. the hidden seedling fire rod is not easy to extinguish, and the ignition needle and the induction needle are not accidentally splashed by water at high temperature to cause quenching damage; 4. the overflow hole and the overflow pipe are added in the center of the furnace core, so that redundant water can be discharged, and the fully premixed burner is protected.

Drawings

Fig. 1 is a schematic structural view of a burner according to the present invention;

fig. 2 is an exploded view of the burner of the present invention;

fig. 3 is a top view of the burner of the present invention;

FIG. 4 is a cross-sectional view of the R-R axis of FIG. 3;

FIG. 5 is a schematic structural view of a lighter according to the present invention;

fig. 6 is a schematic structural diagram of the ignition device according to the present invention;

fig. 7 is a schematic structural view of the overflow cover according to the present invention;

fig. 8 is a schematic structural view of a premixing chamber according to the present invention;

fig. 9 is a schematic view of the sequence of gas and air entering the burner according to the present invention.

The figure includes: the ignition device comprises an ignition ring 1, a shielding space 11, an igniter 2, an igniter outer ring 21, a fixing plate 211, an igniter inner ring 22, an overflow hole 23, a fluid director 3, a horn mouth upper end 31, a cylindrical tail end 32, an inclined opening 33, a premixing cavity 4, an air inlet 42, a main air inlet pipe 5, a water outlet hole 51, an ignition needle 6, an induction needle 7, a seedling fire rod 8, an overflow pipe 9, an overflow cover 10 and a gap 101.

Detailed Description

As shown in fig. 1-4, the full premix burner of the utility model is mounted on the furnace, and comprises a firing ring 1, a igniter 2, a fluid director 3 and a premix chamber 4 which are arranged from top to bottom in sequence, the four components are fixed together by screws, the sealing performance is good, the fire is strong, the combustion flame is blue-cyan, and the outer flame temperature can reach 1200 ℃; the ignition ring 1 and the igniter 2 are made of ductile iron alloy, the fluid director 3 and the premixing cavity 4 are made of gray iron, the fluid director is not deformed and does not crack and is high-temperature resistant, the fluid director 3 is sleeved in the premixing cavity 4, as shown in fig. 6, the ignition device is fixed on the igniter outer ring 21 and comprises an induction needle 7, an ignition needle 6 and a flame rod 8, three through holes are correspondingly formed in the premixing cavity 4 and the igniter 2, the induction needle 7, the ignition needle 6 and the flame rod 8 are respectively placed, and the fixing plate 211 made of stainless steel is fixed on the igniter outer ring 21.

The ignition ring 1 is of a solid circular ring structure, an ignition head for hiding an ignition needle, a needle head for hiding a sensing needle and a shielding space 11 for a flame rod are arranged at the corresponding position of the bottom of the inner side surface of an inner circular ring, the hidden flame is not easily extinguished, and the ignition needle 6 and the sensing needle 7 cannot be accidentally splashed by cold water to cause 'quenching' damage due to high temperature. The top end of the ignition ring 1 corresponding to the shielding space 11 is thickened by 5-6mm, so that the whole ignition ring is more durable and is not easy to deform.

The igniter 2 is provided with three rows of ignition holes, the inner ring is phi 3.5mm multiplied by 20 holes and inclines outwards by 12 degrees; the middle ring has phi of 3.5mm multiplied by 30 holes and inclines outwards for 9 degrees; the outer ring is 4.0mm multiplied by 40 holes and is inclined inwards by 18 degrees.

As shown in fig. 5 and 6, the igniter 2 further includes an inner igniter ring 22 which is of a cylindrical structure, an overflow hole 23 is formed in the center of the inner igniter ring, an overflow cover is placed on the inner igniter ring, the overflow cover can be set to be of a circular truncated cone structure, as shown in fig. 7, the inner igniter ring plays a role in preventing sundries from blocking the overflow hole, and meanwhile, flame distribution is more uniform.

The overflow pipe 9 is made of stainless steel, and has an upper end inserted into the overflow hole 23 and a lower end passing through the drain hole 51. The excessive moisture can be discharged through the overflow pipe 9, so that the fully premixed burner is protected.

The bottom of the premixing cavity 4 is connected with an air inlet pipe 5, the premixing cavity 4 and the main air inlet pipe 5 are preferably integrally formed, the main air inlet pipe 5 is in a circular arc bent cylindrical shape, and fuel gas and air enter from the circular arc bent cylindrical shape and are premixed for the first time; the upper surface of the main air inlet pipe 5, that is, the bottom inner cavity of the premixing chamber 4, and the bottom of the formed surrounding space is evenly distributed with a plurality of air inlet holes 42, preferably three air inlet holes 42, as shown in fig. 8, the gas and the air pass through the space and are premixed for the second time, the top openings of the air inlet holes are in a slope shape, and the two gases enter the premixing chamber 4 to rotate anticlockwise, so that the premixing is more sufficient.

As shown in fig. 9, the fluid director 3 comprises a bell mouth upper end 31 and a cylindrical tail end 32 which are matched and sleeved with the igniter 2,

and the circumference direction of the cylindrical tail end 32 is uniformly provided with a plurality of through inclined openings 33, the inclined angle of the inclined opening 33 is consistent with the inclined angles of three air inlets 42 in the inner cavity of the premixing cavity, so that the mixed gas still keeps rotating in the same way in the premixing cavity in the fluid director 3, the cylindrical tail end 32 is sleeved in the premixing cavity 4, a 3mm gap 101 is reserved between the lower end of the igniter 2 and the bell mouth 31 at the upper end of the fluid director 3, arrows A and B in figure 9 are the sequence that air and gas enter each part of the burner through the three air inlets 42 in sequence, and the structure ensures that the noise is lower when the burner burns, the premixing is more sufficient, the burning is more sufficient, and the energy is more saved. The gas and air entering from the gas inlet pipe can be fully mixed in the premixing cavity 4 firstly, then the pressure is reduced through the gap of the fluid director 3, the mixed gas is fully mixed and then passes through the holes of the igniter 2, finally, the gas is uniformly and fully combusted, the emission of carbon monoxide and nitric oxide is greatly reduced, the national standard is met, the requirement of energy conservation and environmental protection is met, and secondly, the structure can control the gas inflow to further achieve the effect of energy conservation and environmental protection.

Claims (7)

1. The full-premix burner is characterized by comprising an induction needle (7), an ignition needle (6), a seedling fire rod (8), and a firing ring (1), a igniter (2), a fluid director (3) and a premix chamber (4) which are sequentially arranged from top to bottom, wherein the fluid director (3) is sleeved in the premix chamber (4), the igniter (2) comprises an igniter outer ring (21), and the induction needle (7), the ignition needle (6) and the seedling fire rod (8) are all arranged on the igniter outer ring (21) and penetrate through the premix chamber (4); the bottom of the inner side surface of the ignition ring (1) is provided with a shielding space (11) for hiding the ignition needle head, the induction needle head and the end part of the seedling fire rod.

2. A full premix burner according to claim 1, characterized in that said burner further comprises an overflow pipe (9) for draining water, said overflow pipe (9) extending through the igniter (2), the deflector (3) and the premix chamber (4), the lower end of said overflow pipe (9) being fixed and passing through the bottom of said premix chamber (4).

3. The full premix burner as recited in claim 2, wherein the igniter further comprises an igniter inner ring (22) and an overflow hole (23), the igniter inner ring (22) is of a cylindrical structure, the overflow hole (23) is arranged at the center of the igniter inner ring (22), and the upper end of the overflow pipe (9) is inserted into the overflow hole (23).

4. The full premix burner as recited in claim 1, wherein a plurality of air inlets (42) are circumferentially opened at a bottom of an enclosed space formed by an inner cavity of the premix chamber (4), and the openings of the air inlets (42) are sloped, so that the gas and air rotate when entering the premix chamber (4), the wind speed is faster, and the premixing is more sufficient.

5. The full premix burner of claim 3, further comprising an overflow cover, said overflow cover being frustoconical and fitting over said igniter inner ring (22).

6. The full premix burner according to claim 1, wherein said flow director (3) comprises a flared upper end (31) and a cylindrical tail end (32) cooperating with said igniter (2), said cylindrical tail end (32) being axially nested within said premix chamber (4), a certain gap (101) being left between the lower end of said igniter (2) and the flared upper end of said flow director (3).

7. The full premix burner as in claim 1, wherein said ignition ring (1) and said igniter (2) are made of ductile iron.

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