CN203907591U

CN203907591U - Combustor

Info

Publication number: CN203907591U
Application number: CN201420331726.9U
Authority: CN
Inventors: 李宗华
Original assignee: 温岭市蓝宝精灵锅炉有限公司
Priority date: 2014-06-20
Filing date: 2014-06-20
Publication date: 2014-10-29

Abstract

The utility model provides a combustor and belongs to the technical field of fuel equipment. The problem that an existing combustor is not sufficient in fuel combustion is solved. The combustor comprises an outer tubular shell connected with an air blower, the bottom of the outer shell is fixedly connected with a bottom plate, and an inner tubular shell is fixedly connected to the bottom plate and located in the outer shell. An annular seal cover is fixedly connected between the top of the inner shell and the inner wall of the outer shell. An air inlet cavity is formed between the inner shell and the outer shell. A grate is fixed inside the inner shell, the inner shell is divided into a combustion chamber on the upper portion and an air distribution chamber on the lower portion through the grate, and an air inlet is formed in the inner shell and communicated with the air distribution chamber. The inner shell is fixedly connected with a feeding tube which is communicated with the combustion chamber and extends out of the side of the outer shell. The grate is provided with multiple air outlet holes. The inner shell is further provided with multiple circles of air inlet holes communicated with the combustion chamber. The combustor has the advantages of being good in air inlet effect, capable of making fuel be combusted sufficiently in time and the like.

Description

A kind of burner

Technical field

The utility model belongs to fuel apparatus technical field, relates to a kind of burner.

Background technology

Existing most of medium small boiler being used be take fire coal as main, but coal resources in China is very deficient, in order to save the energy, the development and utilization of biomass energy is more and more subject to people's attention, and is progressively being promoted and is applying.In vast rural area, most peasants still be take agricultural crop straw as fuel, with native kitchen range, makes a fire and cooks and warm oneself at present.Because the volatile ingredient content in agricultural crop straw is higher, when burning, thereby because causing the low black smoke that forms of its efficiency of combustion, combustion air deficiency emerges, and it is contaminated environment not only, and can damage health.

For the problem of above-mentioned existence, applicant has designed a kind of biomass solid fuel burner and has applied for patent [application number: 201320208069.4; Granted publication number: CN203215664U], it comprises the inner body for air compartment and is located at this intrinsic burning groove with sidewall, feed end and discharge end, the top of burning groove is concordant with the upper surface of body, the feed end of burning groove is provided with a feed pipe, the outer end of feed pipe extend out to the outside of body, the sidewall of burning groove is provided with some wind holes that are communicated with air compartment, on the feed end of burning groove, be also provided with a blast pipe, the inner of this blast pipe is communicated with air compartment, and the outer end of this blast pipe extend out to the outside of body.

Above-mentioned biomass solid fuel burner increases wind hole at the sidewall of burning groove, for fuel combustion provides more oxygen, make fuel combustion abundant, but air enters from sidewall wind hole, to fuel sidepiece, send oxygen, the outer burning of fuel is comparatively violent, and fuel inside can not obtain oxygen replenishment in time, burns not prompt enough also abundant not.

Summary of the invention

The purpose of this utility model is for the above-mentioned problems in the prior art, and the burner that a kind of air inlet effect is good, can make full combustion of fuel is provided.

The purpose of this utility model can realize by following technical proposal: a kind of burner, comprise tubular shell, described shell is connected with air blast, it is characterized in that, described outer casing bottom is fixed with base plate, on described base plate, be fixed with and be positioned at shell and tubular inner casing, between the place, top of described inner casing and the inwall of shell, be fixed with annular capping, between described inner casing and shell, form air-inlet cavity, in described inner casing, be fixed with fire grate and described fire grate is separated into inner casing the distribution plenum of combustion chamber and the bottom on top, on described inner casing, offer the air inlet being connected with distribution plenum, the feed pipe that described inner casing is connected and is connected with combustion chamber and stretches out shell sidepiece, described fire grate has a plurality of exhaust vents, described inner casing also offers the fresh air inlet that multi-turn is connected with combustion chamber.

During this burner operation, fuel is in feed pipe enters combustion chamber and be positioned at fire grate, makes afterwards fuel combustion, air blast work is delivered to air in air-inlet cavity, and part air enters distribution plenum from air inlet, then sprays from exhaust vent, to fuel bottom air inlet, part air from fresh air inlet to combustion chamber in air intake, to fuel sidepiece and top air intake, air inlet effect is good like this, air is gathered to center, combustion zone, during fuel combustion, be full of air, sufficient combustion, the thermal efficiency is high.

In above-mentioned a kind of burner, described inner casing comprises the tubular flame retardant coating of being close to inner walls being fixed with on housing and fire grate, and described fresh air inlet is through housing and flame retardant coating.Flame retardant coating is fire brick layer or refractory cement layer, played thermal resistance effect, the indoor temperature that makes to burn is high, and has played heat-blocking action, has extended this burner service life, in addition when this burner quits work, fresh air inlet is discharged heat in combustion chamber, and flame retardant coating is played to radiating and cooling effect, and fresh air inlet plays gap effect, avoid flame retardant coating to expand with heat and contract with cold and break, making the long service life of flame retardant coating.

In above-mentioned a kind of burner, described exhaust vent comprises that multiple row is parallel to feed pipe and the main exhaust vent to combustion chamber bearing of trend in feed pipe, described main exhaust vent is arranged in tip shape and length surpasses fire grate center, and described exhaust vent also comprises the secondary exhaust vent that is positioned at main exhaust vent both sides and is arranged in parallel.From the air of exhaust vent ejection, can effectively be sprayed onto fuel bottom like this, make fuel bottom be full of air, combustion-supporting effect is good.

In above-mentioned a kind of burner, described fresh air inlet comprise two to four circles near the main fresh air inlet of fire grate end face and one to two circle the secondary fresh air inlet near annular capping.Main fresh air inlet is to fuel in combustion chamber sidepiece air intake, secondary fresh air inlet is to fuel in combustion chamber top air intake, and air is gathered to center, combustion zone like this, and combustion-supporting effect is good, and make the fume centralized that fuel combustion produces also fully burn and form high-temperature flue gas in combustion zone, reduce smoke pollution.

In above-mentioned a kind of burner, the quantity of described air inlet is four to eight and is circumferentially uniformly distributed.

In above-mentioned a kind of burner, described shell sidepiece is fixed with several near igniter feed pipe setting and that be connected with combustion chamber.Arranging conveniently of igniter lighted a fire, and saved handling time.

In above-mentioned a kind of burner, on described shell, offer a sight burner being connected with combustion chamber.By seeing burner, can observe to intuitive and convenient the combustion case of fuel in combustion chamber, handled easily personnel make the operations such as filling, switch air blast according to combustion case.

Compared with prior art, the compact conformation of this burner, reasonable in design, can be to the bottom of fuel, sidepiece and top air intake, air inlet effect is good, send oxygen abundant, makes fuel combustion in time and sufficient combustion, and the thermal efficiency is high, and the flue gas formation high-temperature flue gas that can fully burn, reduced smoke pollution.

Accompanying drawing explanation

Fig. 1 is the sectional structure schematic diagram of this burner.

Fig. 2 is the plan structure schematic diagram of this burner.

In figure, 1, shell; 2, air blast; 3, base plate; 4, inner casing; 4a, housing; 4b, flame retardant coating; 5, annular capping; 6, air-inlet cavity; 7, fire grate; 8, combustion chamber; 9, distribution plenum; 10, air inlet; 11, feed pipe; 12, main exhaust vent; 13, secondary exhaust vent; 14, main fresh air inlet; 15, secondary fresh air inlet; 16, igniter; 17, see burner.

The specific embodiment

Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

As depicted in figs. 1 and 2, this burner comprises tubular shell 1, shell 1 is connected with air blast 2, shell 1 bottom is fixed with base plate 3, on base plate 3, be fixed with and be positioned at shell 1 and tubular inner casing 4, between the place, top of inner casing 4 and the inwall of shell 1, be fixed with annular capping 5, between inner casing 4 and shell 1, form air-inlet cavity 6, in inner casing 4, be fixed with fire grate 7 and fire grate 7 and inner casing 4 be separated into the distribution plenum 9 of combustion chamber 8 and the bottom on top, on inner casing 4, offer the air inlet 10 being connected with distribution plenum 9, the quantity of air inlet 10 is four and is circumferentially uniformly distributed, the feed pipe 11 that inner casing 4 is connected and is connected with combustion chamber 8 and stretches out shell 1 sidepiece, shell 1 sidepiece is fixed with two near feed pipe 11 igniter 16 that arrange and that be connected with combustion chamber 8, on shell 1, offer a sight burner 17 being connected with combustion chamber 8, fire grate 7 has a plurality of exhaust vents, inner casing 4 also offers the fresh air inlet that multi-turn is connected with combustion chamber 8.

Further describe in detail, inner casing 4 comprises the tubular flame retardant coating 4b that is close to housing 4a inwall being fixed with on housing 4a and fire grate 7, and in the present embodiment, flame retardant coating 4b is refractory cement layer.Exhaust vent comprises that seven row are parallel to feed pipe 11 the main exhaust vent 12 in feed pipe 11 8 bearing of trends to combustion chamber, main exhaust vent 12 is arranged in tip shape and length surpasses fire grate 7 centers, and exhaust vent also comprises the secondary exhaust vent 13 that two row are positioned at main exhaust vent 12 both sides and are arranged in parallel.Fresh air inlet comprises that three circles are near the main fresh air inlet 14 of fire grate 7 end faces and the secondary fresh air inlet 15 of the close annular capping 5 of a circle.

During this burner operation, fuel is in feed pipe 11 enters combustion chamber 8 and be positioned at fire grate 7, by igniter 16 igniting, make fuel combustion afterwards, air blast 2 work are delivered to air in air-inlet cavity 6, part air enters distribution plenum 9 from air inlet 10, again from main exhaust vent 12 and 13 ejections of secondary exhaust vent, to fuel bottom air inlet, part air is from 14 pairs of combustion chambers of main fresh air inlet, 8 fuel sidepiece air intakes, part air is from 15 pairs of combustion chambers of secondary fresh air inlet, 8 fuel top air intakes, realized like this bottom to fuel, the air intake at sidepiece and top, air is gathered to center, combustion zone, during fuel combustion, be full of air, sufficient combustion, the thermal efficiency is high, and make the fume centralized that fuel combustion produces also fully burn and form high-temperature flue gas in combustion zone, reduce smoke pollution.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although more used shell 1, air blast 2, base plate 3, inner casing 4, housing 4a, flame retardant coating 4b, annular capping 5, air-inlet cavity 6, fire grate 7, combustion chamber 8, distribution plenum 9, air inlet 10, feed pipe 11, main exhaust vent 12, secondary exhaust vent 13, main fresh air inlet 14, secondary fresh air inlet 15, igniter 16 herein, seen the terms such as burner 17, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.

Claims

1. a burner, comprise tubular shell (1), described shell (1) is connected with air blast (2), it is characterized in that, described shell (1) bottom is fixed with base plate (3), on described base plate (3), be fixed with and be positioned at shell (1) and tubular inner casing (4), between the place, top of described inner casing (4) and the inwall of shell (1), be fixed with annular capping (5), between described inner casing (4) and shell (1), form air-inlet cavity (6), in described inner casing (4), be fixed with fire grate (7) and described fire grate (7) is separated into inner casing (4) distribution plenum (9) of combustion chamber (8) and the bottom on top, on described inner casing (4), offer the air inlet (10) being connected with distribution plenum (9), the feed pipe (11) that described inner casing (4) is connected and is connected with combustion chamber (8) and stretches out shell (1) sidepiece, described fire grate (7) has a plurality of exhaust vents, described inner casing (4) also offers the fresh air inlet that multi-turn is connected with combustion chamber (8).

2. a kind of burner according to claim 1, it is characterized in that, described inner casing (4) comprises the tubular flame retardant coating (4b) of being close to housing (4a) inwall being fixed with on housing (4a) and fire grate (7), and described fresh air inlet is through housing (4a) and flame retardant coating (4b).

3. a kind of burner according to claim 1 and 2, it is characterized in that, described exhaust vent comprises that multiple row is parallel to feed pipe (11) the main exhaust vent (12) in feed pipe (11) (8) bearing of trend to combustion chamber, described main exhaust vent (12) is arranged in tip shape and length surpasses fire grate (7) center, and described exhaust vent also comprises the secondary exhaust vent (13) that is positioned at main exhaust vent (12) both sides and is arranged in parallel.

4. a kind of burner according to claim 3, is characterized in that, described fresh air inlet comprise two to four circles near the main fresh air inlet (14) of fire grate (7) end face and one to two circle the secondary fresh air inlet (15) near annular capping (5).

5. a kind of burner according to claim 1 and 2, is characterized in that, the quantity of described air inlet (10) is four to eight and is circumferentially uniformly distributed.

6. a kind of burner according to claim 1 and 2, is characterized in that, described shell (1) sidepiece is fixed with several near feed pipe (11) igniter (16) setting and that be connected with combustion chamber (8).

7. a kind of burner according to claim 1 and 2, is characterized in that, offers a sight burner (17) being connected with combustion chamber (8) on described shell (1).