CN203656995U

CN203656995U - Picnic furnace

Info

Publication number: CN203656995U
Application number: CN201320700097.8U
Authority: CN
Inventors: 陈立德; 陈诗
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-07
Filing date: 2013-11-07
Publication date: 2014-06-18
Anticipated expiration: 2023-11-07

Abstract

The utility model relates to a picnic furnace. The picnic furnace comprises a furnace body and a furnace pipe arranged in the furnace body in a sleeving manner, wherein a distance is between the bottom of the furnace pipe and the bottom of the furnace body. The picnic furnace is characterized in that the bottom of the furnace pipe is sealed; the top of the furnace pipe is open and is hermetically connected with the top of the furnace body; an air flowing cavity is formed between one side surface of the furnace pipe and the furnace body; a plurality of air inlets are formed in the lower circumferential wall of the furnace pipe; a certain distance is between the height of the air inlets and the bottom of the furnace pipe; an air blower used for blowing air into the air flowing cavity to introduce the air to transversely enter the furnace pipe is arranged on the bottom of the furnace body. The picnic furnace has the advantages of being not prone to flame out, sufficient in combustion of fuels and capable of avoiding fly ash and is worthy of popularization and application.

Description

Picnic stove

Technical field

The utility model relates to a kind of picnic stove, is specifically related to a kind of laterally air inlet and has inside and outside double-deck picnic stove.

Background technology

Picnic stove is people's standing cooking utensils of picnicing of going out, and becoming in recent years many consumers, to make earnest efforts the safari suit bought standby, the focus that the picnic stove of design small volume and less weight, safety and environmental protection becomes businessman falls over each other developmental research.Current, compared with relying on the Novel furnace of solar energy heating, the picnic stove that uses naked light to cook is simple in structure with it, heating remains popular the most general selection fast.Chinese utility model patent " one lights picnic stove " (Granted publication CN2126385U) discloses a kind of picnic stove, comprise a furnace shell, in furnace shell, be set with the muff that refractory material is made, in muff, be placed with ignited briquet, there is the little portable advantage of volume.Because this picnic stove in use must assembling coal combustion, after coal combustion exhausts, cannot be with the replacement of other fuel, limit picnic stove spendable feature all whenever and wherever possible.And use in the wild while picnicing stove, people more wish to gather materials on the spot and select leaf, branch etc. as fuel, to remove the trouble of carrying fuel from, have also saved the energy simultaneously.Often the problem running into as fuel using living beings such as branches has that fuel combustion is insufficient, easy flame-out, over-emitting black exhaust etc., addresses this problem and normally on body of heater, designs air inlet.Chinese utility model patent " wind-proof type living beings picnic furnace " (Granted publication CN202813447U) discloses a kind of picnic furnace, in lower furnace portion, fire grate is set, on the bottom perisporium of body of heater shell, fresh air inlet is set or bottom is provided with stove pin, the air intake mode of this structure is undergrate blast, lower furnace portion arranges fire grate, from bottom to top the flow through fuel of burning of combustion air, the ashes of burning leak down to be deposited in stove bottom from fire grate simultaneously.This design has improved the efficiency of combustion of fuel to a certain extent, but also has following defect: 1, burner hearth bottom arranges fire grate, is difficult to preserve the fire in a stove before fuel is added, flame-out taking place frequently in use procedure; 2, after burned for long time, a certain amount of ashes can be gathered in fire grate bottom, and the air draught pouring into from bottom easily causes flying dust; 3, because the size of air draught is to depend on natural wind, and the intensity of natural wind is unsettled, is unfavorable for that the fuel moment keeps efficient efficiency of combustion.In addition, due to picnic stove environment for use be generally spacious open air, the heat exchange between stove and surrounding enviroment also loss a large amount of calory burnings, how to reduce picnic stove heat loss be also problem in the urgent need to address.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of picnic stove flame-out, that fuel combustion fully can be avoided again flying dust simultaneously that is difficult for for above-mentioned prior art.

Another technical problem to be solved in the utility model is to provide a kind of picnic stove that can effectively improve calory burning utilization rate for above-mentioned prior art.

The technical scheme in the invention for solving the above technical problem is: a kind of picnic stove, include body of heater and be enclosed within the flue in body of heater, between the bottom of described flue and the bottom of body of heater, there is certain distance, it is characterized in that: the bottom of described flue seals, open top and being connected with body of heater top seal, is formed with air flow lumen between the side of described flue and body of heater; On the bottom perisporium of described flue, be provided with several fresh air inlets, the height of described fresh air inlet and flue bottom maintain a certain distance; And be provided with air is blasted in described air flow lumen and makes air laterally enter into the air blast of described flue inside in the bottom of described body of heater.

Preferred scheme is that described fresh air inlet is circumferentially uniform along flue, and the circle that at least distributes, and guarantees that combustion air enters into flue inside equably from flue surrounding, and fuel is fully burned.

Such scheme further preferably, is provided with several benefit wind fresh air inlets on the top perisporium of described flue, circumferentially uniform along flue respectively, and the circle that at least distributes.In the time of the disposable fuel overfill adding, the air admission hole of flue bottom is easily stopped up from inside by fuel, or after burning for a long time, air admission hole is easily stopped up by dust stratification, and now combustion air is difficult to enter flue inside from air admission hole.Mend wind fresh air inlet by arranging, can, to the required oxygen that burns of by-carriage in flue, guarantee that burning can continue, and has avoided the consequence of fuel because of insufficient over-emitting black exhaust that burns.

Preferably, the perisporium of described body of heater is provided with heat-insulation layer.The arranging of insulating layer of furnace body can be reduced the heat exchange of picnic stove and external environment, the utilization rate of the raising combustion heat effectively; In addition, heat-insulation layer is set and can makes the air in air flow lumen obtain preheating, the air of preheating can improve the temperature of combustion flame, thereby shortens the time of culinary art.

Picnic stove in use for some time, the temperature of flue can raise, especially arrange after heat-insulation layer at furnace body inside, a large amount of heat accumulations is in body of heater inside, hot environment is totally unfavorable to the normal work of air blast, in order to guarantee that air blast can normal operation, the further preferred scheme of the utility model is the thermal insulation board that body of heater inside is provided with the below of the top, the flue that are positioned at described air blast, and this thermal insulation board and described air blast, the certain spacing of flue bottom maintenance; On described thermal insulation board, have several through holes of allowing circulation of air, described through hole is circumferentially uniform along the center of thermal insulation board.By thermal insulation board is set, thermal source flue and air blast are kept apart, guaranteed that air blast can not stop running because of hot environment.In addition, under the prerequisite without prejudice to the utility model thought, thermal insulation board can also be designed to other structures, as grid structure.

Concrete, the opening edge of described flue is along being arranged to outside flange, and described flue rides over body of heater top by flange, and makes to be tightly connected between described flue top and body of heater top.The combustion air being blasted by air blast so can be not excessive from Air Flow top of chamber, and enter into as much as possible in flue.

Preferably, in order further to improve the thermal efficiency of flame, to add thermal-flame puts together, the upper end of described flue opening is provided with flame-gathering cover, this flame-gathering cover be up and down communicate, up-small and down-big bullet, flame-gathering cover upper end is crater, and lower end is for gathering burner, and the bore of poly-burner is more than or equal to the bore of flue opening.

The design coordinating with flame-gathering cover is, described body of heater top is provided with pan support, and the bearing height of this pan support is greater than the crater height of described flame-gathering cover.

Concrete, described bottom of furnace body is provided with stove pin, or described upper of furnace body is provided with three-legged support, and three-legged support top is provided with the bracing ring that supports body of heater.Between body of heater and ground, just can maintain a certain distance like this, the air blast of being convenient to bottom of furnace body constantly blasts combustion air in air flow lumen from picnic furnace bottom in a steady stream.

Compared with prior art, the utility model has the advantage of: because the bottom of flue seals, the height of the enterprising pore of flue and furnace bottom maintain certain distance, be different from bottom air inlet, in the utility model, combustion air is laterally to enter in flue from the air admission hole of flue bottom, avoid combustion air directly to contact with flue bottom single spark, be conducive to preserve to greatest extent the fire in a stove before fuel is added, facilitated secondary to ignite.In addition, the picnic stove of this structure, the ashes that burning produces in flue be Direct precipitation in flue bottom, can not spill body of heater outside, be combustion air current or naturally blow and can not cause flying dust phenomenon, protected environmental sanitation.Be provided with air blast at bottom of furnace body, do not need to rely on natural wind and can obtain stable combustion air, be conducive to the efficiency of combustion that the moment keeps fuel.To sum up, picnic stove of the present utility model has been realized and has been difficult for object flame-out, that fuel combustion fully can be avoided again flying dust simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation of the tripod picnic stove of the utility model embodiment.

Fig. 2 is the use schematic diagram of the picnic stove of another embodiment of the utility model.

The specific embodiment

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

As shown in Figure 1, the picnic furnace structure in the present embodiment includes body of heater 1 and is enclosed within the flue 3 of body of heater inside, between the bottom of flue and the bottom of body of heater, has certain distance; The bottom of flue 3 seals, open top, and outside flange 31 is arranged at the edge of opening, and flue rides over body of heater top by flange, and flue top is connected with body of heater top seal by this flange.Combustion air can be not excessive from top like this, and enter into as much as possible in flue.And the external diameter of flue 3 is less than the internal diameter of body of heater 1, between the side of flue and body of heater, be formed with air flow lumen 5; On the bottom perisporium of described flue, be provided with the several fresh air inlets 6 that are uniformly distributed circumferentially, the height of described fresh air inlet and flue bottom maintain a certain distance; In this embodiment, on the top perisporium of flue, be also provided with several benefit wind fresh air inlets 4, respectively circumferentially uniform along flue.

The bottom of body of heater is provided with air blast 8, and air enters in air flow lumen by air blast, enters flue inside via fresh air inlet.The perisporium of body of heater is provided with heat-insulation layer 2, reduces when heat loss the combustion air in can preheated air flow cavity 5.Described body of heater inside is provided with the thermal insulation board 7 that air blast 8 and flue 3 bottoms are separated simultaneously, and thermal insulation board is positioned at the top of air blast, the below of flue, and all keeps certain spacing; On described thermal insulation board 7, have several through holes 71 of allowing circulation of air, described through hole is circumferentially uniform along the center of thermal insulation board.

In this embodiment, the upper end of described flue opening is provided with flame-gathering cover 9, this flame-gathering cover be up and down communicate, up-small and down-big bullet, the upper end of described flame-gathering cover is crater, lower end is poly-burner, and the bore of poly-burner is more than or equal to the bore of flue opening.At body of heater top, pan support 10 is also installed, the bearing height of this pan support is greater than the crater height of described flame-gathering cover 9.For coordinating air blast operation, body of heater need maintain a certain distance with ground, and body of heater is provided with three-legged support 11, three-legged support top is the bracing ring that supports body of heater, or stove pin 12 is set below body of heater, as shown in Figure 2, support whole body of heater, be convenient to air blast and blast combustion air from bottom.

While using picnic stove of the present utility model to cook, in from flame-gathering cover to flue, drop into the fuel of lighting in advance, open air blast, combustion air is blasted in body of heater, through hole on thermal insulation board enters the air flow lumen between flue and body of heater, after accumulating to certain pressure, laterally enter flue inside through the air admission hole by flue side (with mending wind air admission hole), the oxygen that aftercombustion is required, guarantees the abundant burning of fuel.And owing to having certain distance between flue bottom and air admission hole, the ashes that burning produces are deposited on flue bottom, have avoided flying dust, have farthest preserved the fire in a stove before fuel is added simultaneously, again light use when facilitating continuous bavin.Heat-insulation layer on body of heater perisporium has reduced the combustion heat loss of picnic stove, and after burning a period of time, the air in air flow lumen has also obtained preheating, has improved the thermal efficiency of flame.Further, the flame-gathering cover of flue open upper end is gathered the flame of dispersion, has concentrated firepower, has shortened cooking time.In combustion process, can fill into fuel from flame-gathering cover at any time, the fire in a stove before fuel is added that preserve flue bottom is convenient to secondary and is ignited and avoided flame-out.After picnic stove uses, treat that body of heater is completely cooling, flue is taken out to deashing.Picnic stove of the present utility model has really met the requirement that sufficient combustion, the thermal efficiency are high, be difficult for flame-out and environmentally-friendly sanitary.

The foregoing is only preferred embodiment of the present utility model; for a person skilled in the art; do not departing under principle of the present utility model; can also make multiple improvement to the structure of picnic stove; for example air blast is located to body of heater outside; at bottom of furnace body, blast channel is set, by blast pipe, the air outlet of air blast is connected with blast channel, the distortion of this class formation also all should be considered as in protection domain of the present utility model.

Claims

1. a picnic stove, include body of heater (1) and be enclosed within the flue (3) in body of heater, between the bottom of described flue and the bottom of body of heater, there is certain distance, it is characterized in that: the bottom of described flue (3) seals, open top and being connected with body of heater (1) top seal, is formed with air flow lumen (5) between the side of described flue and body of heater; On the bottom perisporium of described flue, be provided with several fresh air inlets (6), the height of described fresh air inlet and flue bottom maintain a certain distance; And be provided with air is blasted in described air flow lumen and makes air laterally enter into the air blast (8) of described flue inside in the bottom of described body of heater.

2. picnic stove according to claim 1, is characterized in that: described fresh air inlet (6) is circumferentially uniform along flue, and the circle that at least distributes.

3. picnic stove according to claim 1, is characterized in that: on the top perisporium of described flue, be provided with several benefit wind fresh air inlets (4), circumferentially uniform along flue respectively, and the circle that at least distributes.

4. picnic stove according to claim 1, is characterized in that: the perisporium of described body of heater is provided with heat-insulation layer (2).

5. picnic stove according to claim 1, is characterized in that: described body of heater inside is provided with the thermal insulation board (7) of the below of the top, the flue that are positioned at described air blast, and this thermal insulation board and described air blast, flue keep certain spacing; On described thermal insulation board, have several through holes (71) of allowing circulation of air.

6. picnic stove according to claim 5, is characterized in that: described through hole (71) is circumferentially uniform along the center of thermal insulation board.

7. according to the picnic stove described in arbitrary claim in claim 1～6, it is characterized in that: the opening edge of described flue is along being arranged to outside flange (31), described flue rides over body of heater top by flange, and makes to be tightly connected between described flue top and body of heater top.

8. according to the picnic stove described in arbitrary claim in claim 1～6, it is characterized in that: the upper end of described flue opening is provided with flame-gathering cover (9), this flame-gathering cover be up and down communicate, up-small and down-big bullet, the upper end of this flame-gathering cover is crater, lower end is poly-burner, and the bore of described poly-burner is more than or equal to the bore of flue opening.

9. picnic stove according to claim 8, is characterized in that: described body of heater top is provided with pan support (10), and the bearing height of this pan support is greater than the crater height of described flame-gathering cover.

10. according to the picnic stove described in arbitrary claim in claim 1～6, it is characterized in that: described bottom of furnace body is provided with stove pin (12); Or described upper of furnace body is provided with three-legged support (11), three-legged support top is provided with the bracing ring that supports body of heater, has certain spacing between described bottom of furnace body and ground.