CN213019628U

CN213019628U - Fire lid and furnace end

Info

Publication number: CN213019628U
Application number: CN202021444060.XU
Authority: CN
Inventors: 陈其明
Original assignee: Haiyan County Dingxing Electrical Technology Co ltd
Current assignee: Haiyan County Dingxing Electrical Technology Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-04-20
Anticipated expiration: 2030-07-21

Abstract

The utility model relates to a combustor field specifically discloses a fire lid and furnace end. The fire cover comprises an inner flame module, an outer flame module and a cover plate, wherein the inner flame module comprises an inner fire outlet ring, the outer flame module comprises an outer fire outlet ring, an inner nozzle is arranged on the inner fire outlet ring, an outer nozzle is arranged on the outer fire outlet ring, and the outer flame module, the inner flame module and the cover plate are sequentially stacked up and down; the cover plate is provided with a first fuel gas channel communicated with the inner nozzle and a second fuel gas channel corresponding to the outer nozzle, and the inner fire outlet ring is also provided with a transition fuel gas channel communicated with the second fuel gas channel and the outer nozzle. Above the fire lid, all set up inner flame module and outer flame module in the apron upper end, for the casing reduces the height, dwindles the gas mixing chamber and create the condition, can effectively reduce gas detonation's intensity and emergence probability.

Description

Fire lid and furnace end

Technical Field

The utility model relates to a combustor field, concretely relates to fire lid and furnace end.

Background

The fire hole of combustor is the setting up directly upwards for the annular mostly among the ordinary domestic gas-cooker, and the air flue that corresponds also is the annular and distributes, and the jet direction of flame is single, and under the prerequisite of same flame coverage, the great miniaturized production that is unfavorable for of the volume of combustor.

To the above-mentioned problem of current domestic gas-cooker, chinese utility model patent that the grant publication number is CN 207230543U discloses a fire lid of high thermal efficiency and use the furnace end of this fire lid, and fire lid wherein includes inner flame module and outer flame module, is equipped with interior nozzle on the inner flame module, is equipped with outer nozzle on the outer flame module, and interior nozzle and outer nozzle spray flame towards different directions to less volume has realized the flame cover on a large scale.

In the burner, in order to secure a coverage area of the flame, a jet distance of the flame is generally increased in a turbo-charging manner. A gas mixing cavity is arranged in a shell of the furnace end, and gas and air after turbocharging are fully mixed in the gas mixing cavity and then enter the fire cover for combustion.

However, since the response speed of the gas valve is different from that of the turbine fan during the startup process of the combustor, the gas valve is usually opened first, and then the turbine fan starts to operate. After the gas valve is opened, before the work of turbo fan, the gas of high concentration can gather gradually in the gas mixing chamber, and turbo fan in case the work begins this moment, high-pressure draught promotes the high concentration gas of not fully mixing with the air and directly spouts and burn from the fire lid, has the possibility of gas deflagration under this condition, has certain potential safety hazard.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a fire lid and furnace end all sets up inner flame module and outer flame module and holds on the apron, for the casing reduces the height, reduces the gas hybrid chamber and creates the condition, can effectively reduce gas detonation's intensity and emergence probability.

In order to solve the technical problem, the utility model provides a technical scheme as follows: a fire cover comprises an inner flame module, an outer flame module and a cover plate, wherein the inner flame module comprises an inner fire outlet ring, the outer flame module comprises an outer fire outlet ring, an inner nozzle is arranged on the inner fire outlet ring, an outer nozzle is arranged on the outer fire outlet ring, and the outer flame module, the inner flame module and the cover plate are sequentially stacked up and down; the cover plate is provided with a first fuel gas channel communicated with the inner nozzle and a second fuel gas channel corresponding to the outer nozzle, and the inner fire outlet ring is also provided with a transition fuel gas channel communicated with the second fuel gas channel and the outer nozzle.

All set up inner flame module and outer flame module in the apron upper end, for the casing reduces the height, dwindles the gas mixing chamber and creates the condition, can spout from interior nozzle and outer nozzle sooner after the high concentration gas gets into the gas mixing chamber to mix with the air and dilute, the high concentration gas volume of gathering in the casing significantly reduces, can effectively reduce gas detonation's intensity and emergence probability.

Preferably, the flame-retardant plastic flame-retardant rubber flame retardant rubber also comprises a plurality of connecting pins, and the connecting pins sequentially penetrate.

Preferably, the inner fire outlet ring comprises a plurality of inner fire outlet sheets, and the inner fire outlet sheets are stacked in sequence.

Preferably, the inner nozzle extends upwards to the upper end face of the inner fire outlet ring; notches which are in one-to-one correspondence with the inner nozzles are arranged on the inner edge of the outgoing fire ring.

The gas in the inner nozzle is limited by the outer fire ring, and the heating range of the inner flame is influenced. And the setting of breach when guaranteeing that nozzle guide gas sprays inwards in, reserves enough space for the rising motion of gas, the effectual heating capacity who improves the inner flame. In addition, the form of the notch is adopted, the weakening of the connection reliability between the internal fire ring and the external fire ring can be reduced to the greatest extent, and the structural stability of the whole body is ensured.

Preferably, the outer nozzle is arranged outside the outer fire ring; the outgoing fire ring comprises a plurality of outgoing fire pieces, and the outgoing fire pieces are stacked in sequence.

Preferably, the fire ring of going out include the top piece of being fired, outer nozzle including set up the hole of being fired on the top piece of being fired, the direction of giving vent to anger of hole of being fired sets up upwards vertically or slope.

Preferably, one side of the outer fire ring facing the inner fire ring is provided with an annular or fan-shaped confluence groove, and the confluence groove and the inner fire ring jointly enclose a buffer cavity communicated with the transition gas channel; the outer nozzle is communicated with the buffer cavity.

After the gas got into the cushion chamber, from outer nozzle jet combustion, because the cushioning effect of cushion chamber, the gas jet velocity of outer nozzle reduces, and the gas is from outer nozzle blowout back to the in-process of burning completion, and the gas can upwards move to the position that is more close the bottom of a boiler, and what correspond can reduce the difference in height of outer flame and bottom of a boiler, directly heats the bottom of a boiler even, has improved outer flame heating efficiency. Meanwhile, the fuel gas injection speed is reduced, the flame separation phenomenon of external fire can be reduced, and the external flame combustion is more stable.

In addition, after the fuel gas enters the combustor, part of the fuel gas exists in a fog state, and particularly in the turbo-charged combustor, because the pressure of the mixed gas is high, the fog-state fuel gas is difficult to further gasify, the mixing degree of the fuel gas and the air is reduced to a certain degree, and the combustion efficiency is influenced. And in the fire lid of this application, because the temperature of going out the fire circle is higher, after the gas got into the cushion chamber, at first in the cushion chamber intensification gasification to further mix with the air, the burning of gas is more abundant, and the thermal efficiency is higher.

Preferably, the outer side of the fire ring is provided with a fire outlet inclined plane which is obliquely arranged upwards, the outer nozzles are distributed on the fire outlet inclined plane, and the air outlet direction of the outer nozzles is perpendicular to the fire outlet inclined plane.

Because the direction of giving vent to anger of outer nozzle sets up in the slant, the outer flame upwards sprays when outside diffusion, when guaranteeing outer flame area of coverage, can reduce outer flame and inner flame difference in height, avoids flame to appear too big high layering, improves holistic heating effect.

A furnace end comprises a shell, wherein the shell comprises a bottom plate, an inner wall plate and an outer wall plate, wherein the inner wall plate and the outer wall plate are positioned on one side of the bottom plate and are coaxially arranged; the fire cover is characterized by also comprising the fire cover, wherein the cover plate is hermetically connected with the outer wall plate; the cover plate, the bottom plate, the inner wall plate and the outer wall plate jointly enclose to form a mixing cavity, and the mixing cavity is respectively communicated with the first fuel gas channel and the second fuel gas channel.

Drawings

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

fig. 2 is an exploded view of a burner according to a first embodiment of the present invention;

fig. 3 is a full sectional view of a burner according to a first embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of the structure of the outer fire ring in the furnace end of the first embodiment of the present invention;

FIG. 6 is a schematic view of the inner fire outlet ring of the furnace end according to the first embodiment of the present invention;

fig. 7 is a full sectional view of a burner according to a second embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at B;

fig. 9 is a schematic structural view of a burner according to a third embodiment of the present invention;

fig. 10 is an exploded view of a third embodiment of the burner of the present invention;

fig. 11 is a full sectional view of a third embodiment of the burner of the present invention;

FIG. 12 is an enlarged view of a portion of FIG. 11 at C;

FIG. 13 is a schematic view of the structure of the outer fire ring in the furnace end of the third embodiment of the present invention;

fig. 14 is a schematic structural view of another inner fire ring of a furnace end according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1-3, a burner includes a housing 2, the housing 2 includes a bottom plate 24, and an inner wall plate 25 and an outer wall plate 23 located at one side of the bottom plate 24, the inner wall plate 25 and the outer wall plate 23 are coaxially disposed. Still include fire lid 1, fire lid 1 include inner flame module, outer flame module, apron 13 and connecting pin post, outer flame module, inner flame module and apron 13 stack gradually the setting from top to bottom, just connecting pin post pass outer flame module, inner flame module and apron 13 in proper order to with outer flame module, inner flame module and apron 13 fastening connection. The cover plate 13 is connected with the outer wall plate 23 in a sealing mode, and the cover plate 13, the bottom plate 24, the inner wall plate 25 and the outer wall plate 23 jointly enclose a mixing cavity.

As shown in fig. 2 and 4, the inner flame module includes an inner flame ring 12, the outer flame module includes an outer flame ring 11, the inner flame ring 12 is provided with an inner nozzle 122, the outer flame ring 11 is provided with an outer nozzle 111, and the outer nozzle 111 may be circular, rectangular or fan-shaped. The inner fire-discharging ring 12 can be integrally formed, and can also be divided into a plurality of inner fire-discharging sheets which are stacked in sequence. The cover plate 13 is provided with a first gas channel 132 communicated with the inner nozzle 122 and a second gas channel 131 corresponding to the outer nozzle 111, and the inner fire ring 12 is further provided with a transition gas channel 121 communicated with the second gas channel 131 and the outer nozzle 111. The mixing chamber is respectively communicated with the first gas channel 132 and the second gas channel 131.

As shown in fig. 1 and 4, the fire ring 11 includes a top fire sheet, the outer nozzle 111 includes fire holes disposed on the top fire sheet, and the air outlet direction of the fire holes is vertically upward or obliquely upward.

All set up in apron 13 upper end with interior flame module and outer flame module, for casing 2 reduces the height, dwindles gas mixing chamber 22 and create the condition, can spout from interior nozzle 122 and outer nozzle 111 sooner after high concentration gas gets into gas mixing chamber 22 to mix with the air and dilute, the high concentration gas volume of gathering in casing 2 significantly reduces, can effectively reduce gas detonation's intensity and emergence probability.

As shown in fig. 4-6, further, the inner nozzle 122 extends upward to the upper end surface of the inner burner ring 12; the inner edge of the outgoing fire ring 11 is provided with notches 112 corresponding to the inner nozzles 122 one to one. The radial depth of the notches 112 is less than the radial depth of the inner nozzle 122.

Example two

As shown in fig. 7 and 8, the present embodiment is different from the first embodiment in that: the outer nozzle 111 is arranged outside the outer fire ring 11; the outgoing fire ring 11 comprises a plurality of outgoing fire pieces which are stacked in sequence. The thickness of the outgoing fire ring 11 can be adjusted according to the specification and the model of the gas stove, and then the sizes of the outer nozzle 111 and the outer flame are adjusted, so that the universality is better.

EXAMPLE III

As shown in fig. 9 to 14, the present embodiment is different from the first embodiment in that: one side of the outgoing fire ring 11 facing the internal fire ring 12 is provided with an annular or fan-shaped confluence groove, and the confluence groove and the internal fire ring 12 jointly enclose a buffer cavity 112 communicated with a transition gas channel 121; the outer nozzle 111 communicates with the buffer chamber 112. The outer side of the fire ring 11 is provided with a fire outlet inclined plane which is arranged obliquely upwards, the outer nozzles 111 are distributed on the fire outlet inclined plane, and the air outlet direction of the outer nozzles 111 is perpendicular to the fire outlet inclined plane.

After the gas gets into cushion chamber 112, from outer nozzle 111 jet combustion, because the cushioning effect of cushion chamber 112, the gas jet velocity of outer nozzle 111 reduces, and the gas is from outer nozzle 111 blowout back to the in-process that the burning was accomplished, and the gas can upwards move to the position that is closer to the bottom of a boiler, and what correspond can reduce the difference in height of outer flame and bottom of a boiler, directly heats the bottom of a boiler even, has improved outer flame heating efficiency. Meanwhile, the fuel gas injection speed is reduced, the flame separation phenomenon of external fire can be reduced, and the external flame combustion is more stable.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a fire lid, includes interior flame module, outer flame module and apron, interior flame module including interior out fire circle, outer flame module including the out fire circle, interior out fire circle on be equipped with interior nozzle, the out fire circle on be equipped with outer nozzle, its characterized in that: the outer flame module, the inner flame module and the cover plate are sequentially stacked up and down;

the cover plate is provided with a first fuel gas channel communicated with the inner nozzle and a second fuel gas channel corresponding to the outer nozzle, and the inner fire outlet ring is also provided with a transition fuel gas channel communicated with the second fuel gas channel and the outer nozzle.

2. The fire cover of claim 1, wherein: the flame-out device is characterized by further comprising a plurality of connecting pins, wherein the connecting pins sequentially penetrate through the outer flame module, the inner flame module and the cover plate and fixedly connect the outer flame module, the inner flame module and the cover plate.

3. The fire cover of claim 1, wherein: the inner fire outlet ring comprises a plurality of inner fire outlet sheets, and the inner fire outlet sheets are sequentially stacked.

4. The fire cover of claim 1, wherein: the inner nozzle extends upwards to the upper end surface of the inner fire outlet ring; notches which are in one-to-one correspondence with the inner nozzles are arranged on the inner edge of the outgoing fire ring.

5. A fire cover according to any one of claims 1 to 4, wherein: the outer nozzle is arranged on the outer side of the outer fire ring; the outgoing fire ring comprises a plurality of outgoing fire pieces, and the outgoing fire pieces are stacked in sequence.

6. A fire cover according to any one of claims 1 to 4, wherein: go out the fire circle include that the top goes out the fire piece, outer nozzle go out the fire hole on the fire piece including setting up at the top, go out the vertical upwards or the slope of the direction of giving vent to anger of fire hole and upwards set up.

7. A fire cover according to any one of claims 1 to 4, wherein: an annular or fan-shaped confluence groove is arranged on one side of the outer fire ring facing the inner fire ring, and the confluence groove and the inner fire ring jointly enclose a buffer cavity communicated with the transition gas channel; the outer nozzle is communicated with the buffer cavity.

8. The fire cover of claim 7, wherein: the outer side of the fire ring is provided with a fire outlet inclined plane which is obliquely arranged upwards, the outer nozzles are distributed on the fire outlet inclined plane, and the air outlet direction of the outer nozzles is perpendicular to the fire outlet inclined plane.

9. A furnace end comprises a shell, wherein the shell comprises a bottom plate, an inner wall plate and an outer wall plate, wherein the inner wall plate and the outer wall plate are positioned on one side of the bottom plate and are coaxially arranged; the method is characterized in that: the fire lid of any one of claims 1-8, wherein the lid plate is sealingly connected to the outer wall plate;

the cover plate, the bottom plate, the inner wall plate and the outer wall plate jointly enclose to form a mixing cavity, and the mixing cavity is respectively communicated with the first fuel gas channel and the second fuel gas channel.