CN200965224Y

CN200965224Y - Conical lid burner of fuel heater

Info

Publication number: CN200965224Y
Application number: CN 200620009405
Authority: CN
Inventors: 毛华永; 李国祥; 王伟; 薛建波; 白书战; 晋世强; 周永刚; 赵书明; 丁金铮; 王素兰; 郝胜兵
Original assignee: Hebei Hongye Mechine Co Ltd Shandong University; Shandong University
Current assignee: HEBEI HONGYE YONGSHENG VEHICLE HEATER CO Ltd; Shandong University
Priority date: 2006-11-07
Filing date: 2006-11-07
Publication date: 2007-10-24
Anticipated expiration: 2016-11-07

Abstract

The utility model provides a conical burner of the fuel oil heater comprising a combustor cap, an oil adsorption conical liner, a primary combustion chamber, a secondary combustion chamber, an air-intaking draft-tube, an air-intaking oriented flake, a fuel tube, a glow plug. The oil adsorption conical liner attaches to the inner side of the combustor cap; an oil groove is positioned between the oil adsorption conical liner and the combustor cap; the combustor cap is connected with the primary combustion chamber with the outside provided with the draft-tube for air intake and the chamber wall circumferentially distributed with an air inlet. The primary combustion chamber is connected with the back end of the air-intake draft-tube to form a conical opening. The front end of the air-intake draft-tube is connected with the air-intaking oriented flake that is provided with an air relief hole. The secondary combustion chamber is connected with the back end of the air- intake draft-tube; the combustor cap takes a shape of a taper, and is connected with the fuel tube; the top of the cap is provided with a glow plug; and the cap is circumferentially distributed with an air hole. The utility model is reliable in ignition starting, rapid, not easy to generate carbon deposition and with a high combustion efficiency and the economic benefit can increase more than 6%.

Description

A kind of awl lid shape burner of fuel heater

Technical field

The utility model relates to the burner that fuel heater is used, and belongs to the fuel heater technical field.

Technical background

Fuel heater is as a kind of independently heating plant, has been widely used in that various conveying mechanicals such as automobile, boats and ships are warmed oneself and engine prewarming etc. under low temperature environment.As the burner of heater core parts, fuel oil is the quality of combustion position therein, and discharging of heat efficiency of heater, pollutant etc. is all had great influence.In burners in prior, because the local flow dead greatly that exists easily generates carbon distribution on its inwall, this is unfavorable for the fuel oil normal combustion, can cause the heater overall thermal efficiency to descend, and make exhaust emission deteriorates, contaminated environment.

Summary of the invention

The utility model is at the deficiency that burner in the existing fuel heater exists, and the awl lid shape burner of a kind of difficult generation carbon distribution, fuel heater that efficiency of combustion is high is provided.

The awl lid shape burner of fuel heater of the present utility model adopts following technical solution to realize:

The awl lid shape burner of fuel heater comprises combustion chamber lid, oil suction awl lining, one-level combustion barrel, secondary firing tube, air inlet guide shell, air inlet splitter, fuel pipe and glow plug; Oil suction awl lining is fitted in combustion chamber awl interior surface, is provided with oil groove between combustion chamber lid inner surface and the oil suction awl lining; One-level combustion barrel and combustion chamber lid link together, and the outside of one-level combustion barrel is provided with the air inlet guide shell, form annular inlet chamber between the two, circumferentially are distributed with air admission hole on the barrel of one-level combustion barrel in annular inlet chamber; The rear end of the rear end of one-level combustion barrel and air inlet guide shell is taper, is joined together to form conical reducing, and the reducing middle part communicates with the secondary firing tube, and the conical surface of reducing is provided with by-pass prot; The front end of air inlet guide shell is connected with the air inlet splitter, and the air inlet splitter is provided with the air tap hole; The secondary firing tube is connected the rear end of air inlet guide shell; Combustion chamber lid is tapered, is connected with fuel pipe on it, and the combustion chamber lid top is provided with the glow plug chamber that is communicated with the one-level combustion barrel by fire hole, and the indoor glow plug that is equipped with of glow plug, combustion chamber lid circumferentially are distributed with the tangential air hole to the inner wall surface thereof inclination.

Oil groove between combustion chamber lid inner surface and the oil suction awl lining is " individual " font.

The utility model helps gas flow because combustion chamber lid is taper, is fit to the shape of diffusion combustion flame, can eliminate the dead band, is not easy to produce carbon distribution.Tangential air hole on the combustion chamber lid has jet action, can produce swirling eddy, not only can well cooperate with the conical combustor lid, better reduces flow dead, and oil suction awl lining internal face is had stronger entrainmenting and the cleaning effect.That is to say, can entrainment oil gas and participate in mixing (meanwhile also further having strengthened the evaporation gasification that the awl lining is gone up fuel oil), under the cleaning effect of rotating jet, be difficult for producing carbon distribution again.In addition, rotating jet also can produce a suitable recirculating zone, thereby keeps the stable of flame.The oil duct inlet of fuel pipe on combustion chamber lid is in the upper end, combustion chamber, and communicates with oil groove top on the combustion chamber lid internal face, so that the absorption of fuel flow and awl lining is uniform.And the lower end of oil groove is near the glow plug heating position, and fuel oil can arrive evaporation gasification around the scorching hot end of glow plug rapidly during starting, and mixes with air that airport advances with the igniting of glow plug chamber and to catch fire, and can improve the igniting reliability effectively and start blowdown with reduction.The taper end of one-level combustion barrel is beneficial to the flow losses that reduce in the one-level combustion chamber, and can reduce easily to give birth to the flow dead of carbon distribution, and the by-pass prot on it has the effect that reduces secondary firing tube dead band.

It is reliable to the utlity model has ignition trigger, rapidly, does not have the burning dead band, is difficult for producing carbon distribution, and the efficiency of combustion height can reach more than 90%, and economy can improve more than 6%.

Description of drawings

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

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the structural representation of glow plug chamber in the utility model.

Fig. 4 is the distribution schematic diagram of combustion chamber lid inner surface oil groove in the utility model.

Among the figure, 1, the secondary firing tube, 2, one-level combustion barrel taper flange flange, 3, air inlet guide shell taper flange flange, 4, air admission hole, 5, the air inlet splitter, 6, the air tap hole, 7, oil suction awl lining, 8, the tangential air hole, 9, the combustion chamber, 10, combustion chamber lid, 11, awl lining fire hole, 12, glow plug, 13, the glow plug chamber, 14, fuel pipe, 15, positioning convex, 16, awl covers fire hole, 17, vertical oil groove, 18, the oil pipe welding hole, 19, the oil duct inlet, 20, screw hole, 21, the air inlet guide shell, 22, annular inlet chamber, 23, the one-level combustion barrel, 24, flow dead, 25, by-pass prot, 26, reducing, 27, the igniting airport, 28, the arc oil groove.

The specific embodiment

Embodiment

The structure of the awl lid shape burner of fuel heater of the present utility model as shown in Figure 1.Comprise combustion chamber lid 10, oil suction awl lining 7, one-level combustion barrel 23, secondary firing tube 1, air inlet guide shell 21, air inlet splitter 5, fuel pipe 14 and glow plug 12.The front end of one-level combustion barrel 23 inserts the positioning spigot of combustion chamber lid 10 ends, firm welding.Be distributed with 4～12 by-pass prots 25 that can reduce flow dead 24 in the secondary firing tube 1 on the taper flange flange 2 of the rear end of one-level combustion barrel 23.Circumferentially be distributed with 2～5 circle air admission holes 4 on the barrel of one-level combustion barrel 23.The taper flange flange 3 of air inlet guide shell 21 rear ends is spot-welded together with the taper flange 2 of one-level combustion barrel 23 tail ends (flame outflow end), the two taper flange forms a reducing 26 that communicates with secondary firing tube 1, and the sandwich shape between the two circularizes inlet chamber 22.The front and back end of secondary firing tube 1 is opened wide, and the front end sleeve is at the rear portion of air inlet guide shell 21, circumferentially firm welding.Air inlet splitter 5 is inserted in by the top of combustion chamber lid 10, fits together with the flange ring flange of air inlet guide shell 21 front ends, is evenly equipped with 6～20 air tap holes 6 on the air inlet splitter 5.Glow plug 12 inserts in the glow plug chamber 13 at combustion chamber lids 10 tops, and it is fixing to tighten (or pin, locking plate, jump ring etc.) by screw thread.

Combustion chamber lid 10 is taper, is the heat resisting steel die casting, also available steel plate punching press or be welded.Cover the welding hole 18 that can insert fuel pipe 14.Fuel pipe 14 inserts oil pipe welding hole 18, circumferentially welds.Combustion chamber lid 10 is provided with one and has the projection 15 of U type groove, installs and fixes oil pipe, also can play the positioning supports effect when fuel pipe 14 inserts 18 welding of oil pipe welding hole.The oil duct inlet 19 of fuel pipe 14 on combustion chamber lid 10 is in the upper end that whole burner is laid posture, and communicates (referring to Fig. 4) with " individual " font oil groove top on combustion chamber lid 10 internal faces, and the absorption of being convenient to fuel flow and oil suction awl lining 7 is uniform.The top of combustion chamber lid 10 is spherical, and (left end among Fig. 1, Fig. 3) is provided with glow plug chamber 13 on the dome, and glow plug 12 is installed in the glow plug chamber 13, the structural representation of the glow plug chamber that provides referring to Fig. 3.Glow plug chamber 13 communicates with the combustion chamber 9 of one-level combustion barrel 23 by

fire hole

16,11, and

fire hole

16,11 ovalizes also can be other shape.The top of glow plug chamber 13 or side be provided with exterior one or more the igniting usefulness igniting airport 27, referring to Fig. 3.Being circumferentially with 2～5 and having the tangential air hole 8 that certain-length can form jet of combustion chamber lid 10, referring to Fig. 2 and Fig. 4, tangential air hole 8 tilts to the internal face of combustion chamber lid 10, makes air form swirling eddy in combustion chamber lid 10.The inner surface of combustion chamber lid 10 is provided with vertical oil groove 17 and the arc oil groove 28 of being convenient to fuel oil diffusion, and vertically oil groove 17 and arc oil groove 28 are " individual " font, the distribution schematic diagram of the combustion chamber lid inner surface oil groove that provides referring to Fig. 4.And the vertical oil groove 17 in " individual " font oil groove is near the heating position of glow plug 12, fuel oil can arrive the scorching hot end evaporation gasification on every side of glow plug 12 rapidly during starting, and mixes with air that airport 27 advances with glow plug chamber igniting and to catch fire, can improve the igniting reliability effectively and blowdown is started in reduction.The inner surface of combustion chamber lid 10 is provided with oil suction awl lining 7.Have the adsorbing porous oil-absorbing awl of capillary lining 7, closely fit with the inner surface of combustion chamber lid 10 by spot welding.This oil suction awl lining 7 usefulness heat-resistant alloy wires (net, fiber-like material) press forming.The top of oil suction awl lining 7 is provided with fire hole 11, and fire hole 11 is slightly less than the fire hole 16 on the combustion chamber lid 10.

The course of work of the present utility model is:

This burner is installed in the heater by the screw hole 20 on the air inlet guide shell 21 front end flange ring flanges, press the start button of heater after, the igniting usefulness glow plug 12 be energized heating.When reaching scorching hot, fuel pump is to fuel pipe 14 fuel feeding, the fuel oil that supplies through the arc oil groove 28 of combustion chamber lid 10 inner surfaces and vertically oil groove 17 by 7 absorption of oil suction awl lining, and diffusion homogenising.Oil suction awl lining 7 tops at first are heated the evaporation gasification near the fuel oil at glow plug 12 places, and with glow plug chamber 13 in mix through the air of igniting by the combustion-supporting fan of heater with 27 confessions of airport.After reaching ignition temperature, gaseous mixture is burning rapidly just, form a smaller initial stage ignition flame, this flame enters the combustion chamber 9 of one-level combustion barrel 23 by

fire hole

16 and 11, and is subjected to glow plug 12 bakings to evaporate the fuel oil of gasification around lighting oil suction awl lining 7 tops.Combustion air is by having the tangential air hole 8 of jet action, at the oil suction awl lining 7 inner swirling eddies that form on the combustion chamber lid 10.The oil gas that this swirling eddy purges on oil suction awl lining 7 internal faces participates in mixing and burning.And, enter the combustion air of combustion chamber 9 through annular inlet chamber 22, one-level combustion barrel air admission hole 4 by the tap hole on the air inlet splitter 56, successively be blended into successively in the gaseous mixture of diffusion combustion of anoxic, so that gaseous mixture fully burns.Flow to the high-temperature fuel gas of one-level combustion barrel 23 rear ends, a part refluxes to oil suction awl lining 7 because of the backflow effect of one-level combustion barrel taper flange flange 2, and to keep reliable firing temperature, glow plug 12 outage back gaseous mixtures have a stable ignition temperature; Simultaneously, this part high temperature reflux combustion gas helps the gasification of fuel oil that oil suction awl lining 7 absorbs, and also because of having improved the temperature of reaction zone, can strengthen combustion intensity.A small amount of combustion gas flows into secondary firing tube 1 by the by-pass prot on the one-level combustion barrel taper flange flange 2 25, and most of combustion gas is the circular reducing 26 inflow secondary firing tubes 1 bigger through centre, one-level combustion barrel rear end.Can be in the secondary firing tube basic after-flame of the gaseous mixture of completing combustion in the one-level combustion barrel not in the combustion gas.High-temp waste gas enters atmosphere after the heat exchanger heat absorption of heater via under the water conservancy diversion of secondary firing tube 2.The present invention not only can be used as the burner of fuel evaporating oil heater, also can be used on other similar heating plant.

Claims

1, a kind of awl of fuel heater lid shape burner comprises combustion chamber lid, oil suction awl lining, one-level combustion barrel, secondary firing tube, air inlet guide shell, air inlet splitter, fuel pipe and glow plug; It is characterized in that: oil suction awl lining is fitted in the combustion chamber lid inner surface, is provided with oil groove between combustion chamber lid inner surface and the oil suction awl lining; One-level combustion barrel and combustion chamber lid link together, and the outside of one-level combustion barrel is provided with the air inlet guide shell, form annular inlet chamber between the two, circumferentially are distributed with air admission hole on the barrel of one-level combustion barrel in annular inlet chamber; The rear end of the rear end of one-level combustion barrel and air inlet guide shell is taper, and both rear ends link together, and forms the taper reducing that communicates with the secondary firing tube, and the conical surface of reducing is provided with by-pass prot; The front end of air inlet guide shell is connected with the air inlet splitter, and the air inlet splitter is provided with the air tap hole; The secondary firing tube is connected the rear end of air inlet guide shell; Combustion chamber lid is tapered, is connected with fuel pipe on it, and the combustion chamber lid top is provided with the glow plug chamber that is communicated with the one-level combustion barrel by fire hole, and the indoor glow plug that is equipped with of glow plug, combustion chamber lid circumferentially are distributed with the tangential air hole to the inner wall surface thereof inclination.

2, the awl of fuel heater according to claim 1 lid shape burner is characterized in that: the oil groove between described combustion chamber lid inner surface and the oil suction awl lining is " individual " font.