CN205979740U - Fire burning furnace thorax - Google Patents

Abstract

The utility model discloses a fire burning furnace thorax, including a burning section of thick bamboo and the urceolus of suit in the burning section of thick bamboo outside, its characterized in that has the clearance and forms the air current chamber between burning section of thick bamboo outer wall and the urceolus, and the bottom of urceolus is provided with the air feed assembly with air current chamber intercommunication, and a burning section of thick bamboo and urceolus wholly are big end down's toper structure. Fire burning furnace thorax set up whole furnace into tapered structure, avoid the vortex to produce, promote air supply efficiency, the ignition energy obtains bigger air mass flow, satisfies thoughtlessly burn the in advance required air and the mixing ratio of gas, realizes the pyrolysis and the better gasification of carbon granule of combustible substance molecule, obtains the high heating value gas, and then the higher furnace temperature of acquisition and the continual and steady high temperature of fire door, fires burning furnace mouth temperature continually and steadily more than 1050 DEG C.

Description

A kind of burner hearth

Technical field

This utility model is related to burner technical field, more particularly, to a kind of burner hearth.

Background technology

Gradually stepping up with people's living standard, outdoor camping tourism has become as selected by increasing people, when During the long-time activity out of doors of people, either it is used for picnic or in order to maintain basic living necessities, all inevitably Need to carry out processed processing to food, address that need, occurred in that camping of field processed processed food on the market Stove, traditional camp stove is made up of heater and fuel storage device, but this kind of camp stove takies volume greatly, and uses Time is short, and fuel storage device is once finished change and cannot reuse, and carrying excessive fuel storage device seriously can increase heavy burden, Portability is poor.Occur in that the combustion furnace using biomass as fuel, the biomass fuel such as branch, straw side of pickup in the wild therewith Just and nexhaustible, fuel need not be carried again when therefore camping, alleviate heavy burden.

But traditional biomass combustion furnace is usually the burner hearth of straight barrel type, is also easy to produce vortex, leads to larger flow resistance, cause The reduction of air velocity, wind supply quantity is not enough it is impossible to obtain the mixing ratio of the air required for premixed combustion and fuel gas, leads to It is difficult to obtain higher temperature inside flue, burning is insufficient, and fire door ignition temperature is relatively low, and flame anti-interference is poor, particularly exists When high altitude localitiess use, stove fuel combustion is insufficient, and amount of smoke is big, and the low problem of caloric value more highlights.

Utility model content

Technical problem to be solved in the utility model and the technical assignment proposing are that prior art is improved, and provide A kind of burner hearth, the burner hearth solving traditional biomass combustion furnace in current technology is straight tube structure, is also easy to produce vortex, air-flow The reduction of speed, wind supply quantity is not enough it is impossible to obtain the mixing ratio of the air required for premixed combustion and fuel gas, and burning is not filled Point, the low problem of ignition temperature.

For solving above technical problem, the technical solution of the utility model is：

A kind of burner hearth, including combustion barrel be sleeved on outer tube outside combustion barrel it is characterised in that burning drum outer wall There is and outer tube between gap and form air flow chamber, the bottom of outer tube is provided with air feed assembly connect with air flow chamber, combustion barrel with Outer tube is in integrally up-small and down-big pyramidal structure.Whole burner hearth is set to tapered knot by burner hearth described in the utility model Structure, because the area that gas flows through is bigger, then flow velocity is less, when the more little then flow velocity of area that gas flows through is bigger, therefore air-flow When the bottom of outer tube enters into air-flow intracavity and rises, the gradual contraction of air flow chamber, the flow velocity of air-flow becomes big, it is to avoid each The generation of position vortex, is substantially improved air-supply efficiency, decreases the backflow of steam, meet the air required for premixed combustion and combustion The mixing ratio of gas, realizes the pyrolysis of combustible molecule and the more preferable gasification of carbon granule, obtains high heating value combustion gas, and then obtains higher Fire box temperature and fire door continual and steady high temperature.

Further, the taper angle of described combustion barrel is 15～18 °, and the taper angle of outer tube is 14～17 °, air-flow The gradual contraction in chamber, ensures and can obtain higher air velocity, makes the air having abundance in combustion barrel, improves burning effect Rate, thus improve fire box temperature.

Further, the top setting burning fire door of described combustion barrel, burning fire door is up big and down small pyramidal structure, The combustion gas of burning fire door obtains higher air velocity, increased the stability of flame and the energy of anti-external air flow or wind speed interference Power.

Further, the wall of described burning fire door along the circumferential direction offers the fire door aperture of some ventilations, air-flow When air flow chamber flows out along fire door aperture, airflow direction towards combustion barrel center and upwards, stove from whole circumference direction The air-flow of mouth aperture outgoing is assembled at combustion barrel center, preferably ensures the stability of flame, improves anti-external air flow or wind speed The ability of interference.

Further, the bore of described fire door aperture is 2.5～4.5mm, and is provided with two rows so that from stove The steady air current of mouthful aperture outgoing, and there is higher air velocity it is ensured that the stability of flame.

Further, the bottom of described combustion barrel is additionally provided with thermal insulation layer, and the high temperature reducing burning is to air feed assembly Impact, extends the service life of air feed assembly.

Further, described air feed assembly includes blower fan, is connected by blower fan heat resistant layer, effectively between blower fan and outer tube Reduce heat transfer, make fire box temperature raise the normal operation not affecting blower fan, extend the service life of blower fan it is ensured that can be burning There is provided sufficient air it is ensured that efficiency of combustion.

Further, described outer tube is heat-insulated cylinder, reduces heat leakage, ensures fire box temperature, improves calory burning profit Use efficiency.

Compared with prior art, this utility model advantage is：

Whole burner hearth is set to tapered structure by burner hearth described in the utility model, it is to avoid vortex produces, and lifting is sent Wind efficiency, ignition energy obtains bigger air mass flow, meets the mixing ratio of the air required for premixed combustion and combustion gas, realization can The pyrolysis of combustion things molecule and the more preferable gasification of carbon granule, obtain high heating value combustion gas, and then obtain higher fire box temperature and fire door Continual and steady high temperature, burning fire door constant temperature stable more than 1050 DEG C；The back taper structure of burning fire door makes combustion gas obtain Obtain higher air velocity, increased the stability of flame and the ability of anti-external air flow or wind speed interference.

Brief description

Fig. 1 is structural representation of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

A kind of burner hearth disclosed in this utility model embodiment, improves the flow velocity of air-flow, lifting air-supply efficiency, reduces heat The backflow of gas, improves wind supply quantity, meets the mixing ratio of the air required for premixed combustion and combustion gas, thus improving fire box temperature, Make fire door combustion gas obtain higher air velocity, increased the stability of flame and the ability of anti-external air flow or wind speed interference, Improve efficiency of combustion, thus improving fire door ignition temperature.

As shown in figure 1, a kind of burner hearth, including combustion barrel 1 and the outer tube 2 being sleeved on combustion barrel 1 outside, outer tube 2 is Heat-insulated cylinder, completely cuts off heat transfer, reduces heat leakage, ensures fire box temperature, improves calory burning utilization ratio, combustion barrel 1 outer wall There is and outer tube 2 between gap and form air flow chamber 3, the bottom of outer tube 2 is provided with the air feed assembly 4 connecting with air flow chamber 3, air feed Assembly 4 includes blower fan 41, is connected by blower fan heat resistant layer 42, air is blasted air flow chamber 3 by blower fan 41 between blower fan 41 and outer tube 2 In, air enters supply fuel combustion in combustion barrel 1 along air flow chamber 3, and the bottom of combustion barrel 1 is additionally provided with thermal insulation layer 5, reduces heat Conduction, greatly reduces blower fan and is heated, and so that fire box temperature is raised does not affect the normal operation of blower fan it is ensured that blower fan blasts abundance Air ensure burning fully.Blower fan 41 is 5～9V, the DC fan of 1～4W, the burning output of fire door is about 5.5～ 6.5KW, interior energy burns 2 liters of 20 DEG C of water to 100 DEG C within 3.5 minutes.

According to continuity equation：ρ VA=m, when the area that gas flows through is bigger, then flow velocity is less, the area flowing through when gas More little then flow velocity is bigger, and therefore combustion barrel 1 and outer tube 2 are set to overall by the application is in up-small and down-big pyramidal structure, and The taper angle a of combustion barrel 1 is 15～18 °, and the taper angle b of outer tube 2 is 14～17 °, it is to avoid the generation of each position vortex, Air-supply efficiency is substantially improved, under equal conditions, ignition energy obtains bigger air mass flow, meets the sky required for premixed combustion Gas and the mixing ratio of combustion gas, improve fire box temperature；The top setting burning fire door 11 of combustion barrel 1, burning fire door 11 be upper big under Little pyramidal structure, the wall of burning fire door 11 along the circumferential direction offers the fire door aperture 12 of some ventilations, fire door aperture 12 Connect with air flow chamber 3, the bore of fire door aperture 12 is 2.5～4.5mm, and be provided with two rows so that combustion gas obtains height Air velocity, increased the stability of flame and anti-external air flow or the ability of wind speed interference.

The above is only preferred implementation of the present utility model it is noted that above-mentioned preferred implementation should not regard It is to restriction of the present utility model, protection domain of the present utility model should be defined by claim limited range.For For those skilled in the art, without departing from spirit and scope of the present utility model, can also make some Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (8)

1. a kind of burner hearth, including combustion barrel (1) be sleeved on outer tube (2) outside combustion barrel (1) it is characterised in that combustion Burn and there is between cylinder (1) outer wall and outer tube (2) gap formation air flow chamber (3), the bottom of outer tube (2) is provided with and air flow chamber (3) The air feed assembly (4) of connection, combustion barrel (1) and outer tube (2) are in integrally up-small and down-big pyramidal structure.

2. burner hearth according to claim 1 is it is characterised in that the taper angle (a) of described combustion barrel (1) is 15 ～18 °, the taper angle (b) of outer tube (2) is 14～17 °.

3. burner hearth according to claim 1 is it is characterised in that the top setting combustion furnace of described combustion barrel (1) Mouth (11), burning fire door (11) is up big and down small pyramidal structure.

4. burner hearth according to claim 3 is it is characterised in that the wall of described burning fire door (11) is circumferentially square To the fire door aperture (12) offering some ventilations.

5. burner hearth according to claim 4 it is characterised in that the bore of described fire door aperture (12) be 2.5～ 4.5mm, and it is provided with two rows.

6. burner hearth according to claim 1 it is characterised in that the bottom of described combustion barrel (1) be additionally provided with every Thermosphere (5).

7. burner hearth according to claim 1 is it is characterised in that described air feed assembly (4) includes blower fan (41), wind It is connected by blower fan heat resistant layer (42) between machine (41) and outer tube (2).

8. burner hearth according to claim 1 is it is characterised in that described outer tube (2) is heat-insulated cylinder.