CN1125957C - Warm-air heating radiator - Google Patents

Abstract

To prevent a combustion cylinder from locally becoming red-hot and stably supply secondary air with a simplified structure. This heater is provided with a body case 2 having a warm air blow-off outlet 4 and a fresh air suction inlet 6 and including a convection fan 7 for supplying fresh air sucked from the fresh air suction inlet to the warm air blow-off outlet mounted thereon, an air trunk 9 provided in the body case for guiding fresh air from the fresh air suction inlet to the warm water blow-off outlet, a combustion cylinder 22 at an upper opening provided in the air trunk, burner devices 11a to 11c provided on a lower part in the combustion cylinder, a heat shielding plate 30 provided between the combustion cylinder and the top of the air trunk. An opening 40 is provided in the heat shielding plate 30 for introducing fresh air to a front part of the combustion cylinder 22. Thereby, the opening in the heat shielding plate not only guides combustion gas in a direction where the warm air blow-off outlet is located but also introduces fresh air also to the front of the combustion cylinder so that the combustion cylinder can be cooled from the inside and outside thereof, and hence the combustion cylinder can be prevented from becoming red-hot and can be stably supplied also from an upper part.

Description

Warm-air heating radiator

The present invention relates to warm-air heating radiators such as petroleum fan heater, combustion gas fan heater.

In the employed burning apparatus for combustion of liquid fuel of this kind warm-air heating radiator in the past, the disclosed a kind of technology of for example special public clear 63-45003 communique is, in order to stop spreading of the flame that forms from the glory hole of combustion head and to side direction, prevent that metal combustion barrel is heated to more than the heat resisting temperature, is provided with earth plate.In addition, it is that a plurality of recuperation of heat walls are set on the gasification pot between earth plate and combustion head that the spy opens the disclosed technology of flat 4-278107 communique.

In addition, the disclosed burning apparatus for combustion of liquid fuel of Te Kaiping 4-324058 communique, below being positioned at the top in air channel that the warm braw that is located at the room heater front blows out oral-lateral, be provided with towards below the wind direction converter plate, thereby can be when the SAS Secondary Air Supply mouth be stopped up by rubbish or dust etc., also supplying secondary air in the combustion chamber stably.

In above-mentioned preceding two communiques, directly stoping flame when side direction spreads by earth plate, also, under the situation of stable supply combustion air, stop flame to spread to side direction by will above the flame lateral, guiding to the auxiliary air of supply around the gasification portion.But, if this earth plate stops the effect of flame excessive, flame is diminished, thus the combustion flame that can not get wishing (firepower).In addition, when strong burning, the flame that increases can enlarge the amount of contact with earth plate, or the contact area between expansion and the earth plate, thereby have a following problem: earth plate Yin Wendu is too high and produce fervid, over-burden and consider earth plate itself, must make by the high material of alternative costs; Earth plate itself is deterioration easily; Need to change earth plate with the opposed that part of shape of glory hole.

Particularly when the special-purpose supply opening of auxiliary air is stopped up by rubbish or dust, there is such problem, that is, owing to can not fuel can not fully be burnt to the supplied fresh air on every side of earth plate, thus produce a large amount of unburned gas; Perhaps can not stop flame to the spreading of side direction fully, thereby it is fervid to stop combustion barrel to produce.When carrying out weak burning, can not reach earth plate from the flame of glory hole, earth plate becomes the barrier of auxiliary air, make auxiliary air can not be fed to flame near, thereby also exist can not clean-burning problem.

In an above-mentioned back communique, because above the burning gases that produce in combustion barrel are directed into, can directly or indirectly touch the air channel (radiation), thereby make the temperature in air channel (particularly be positioned at combustion barrel directly over part) become too high, existence can cause cause thermal damage to the parts of top, air channel, or owing to the body that is connected with the air channel is subjected to the heat conduction user is in the hazardous environment.And, because burning gases directly touch the air channel easily, so generation coal smoke below the air channel is understood the blow-off outlet direction that be drawn towards room heater by the cold wind from pressure fan attached to coal smoke below the air channel easily, is blown out from blow-off outlet with warm braw.Also have, just combustion barrel is introduced auxiliary air and be not sufficient to stop flame to spread, so also just do not accomplish to make flame not contact, thereby it is fervid to prevent effectively that combustion barrel from producing with combustion barrel to side direction from the above and below.

Particularly in two kinds of above-mentioned technology, owing to be useful on the lead division of the heating electric heater of heating flame body, the auxiliary air that rises from the burner body lateral is subjected to the obstruction of this lead division and can not passes through this external residing position, therefore, at least the flame that above this part, spreads can not by auxiliary air to the inside direction stop, so exist the part of the combustion barrel be positioned at electric heater lead division upper outside to be easy to generate fervid problem.

The purpose of this invention is to provide a kind of can the obstruction and the part that prevents combustion barrel produces fervid, and the warm-air heating radiator of supplying secondary air stably by simple formation.

Warm-air heating radiator of the present invention in the 1st scheme comprises, the body housing, outside it has the back of aspiration inlet and warm braw blow-off outlet be installed with can aspiration inlet suction from above-mentioned outside outer gas be fed to the convection current pressure fan of above-mentioned warm braw blow-off outlet, with the air channel that is installed within the above-mentioned body housing, outer gas aspiration inlet outside above-mentioned can be directed to the warm braw blow-off outlet, with be installed in combustion barrel in the above-mentioned air channel, upper opening, with the burner that is installed in above-mentioned combustion barrel bottom, and be located at thermal insulation board between the top in above-mentioned combustion barrel and above-mentioned air channel; And, the opening of gas outside described thermal insulation board is provided with and can imports to the front portion of above-mentioned combustion barrel.

In the warm-air heating radiator of the present invention of the 2nd scheme, being provided with in the front portion of above-mentioned thermal insulation board can be with the outer gas top rake portion of guiding below tiltedly gradually, in this top rake portion, be provided with can be between air channel and thermal insulation board flow air introduce opening in the above-mentioned combustion barrel.

In addition, in above-mentioned room heater, being provided with at the rear portion of above-mentioned thermal insulation board can be with the outer gas rear-inclined portion of guiding and from further sagging downwards following lappet portion of this rear-inclined portion upward gradually, is provided with the opening that outer gas can be guided to below the above-mentioned thermal insulation board in above-mentioned rear-inclined portion.

Invention according to the 1st scheme, the opening that is located on the thermal insulation board can not only play the burning gases effect of the targeting port of (direction at warm braw blow-off outlet place) guiding forwards, and can also play the effect of outer gas being guided into the guide portion of combustion barrel front portion, thereby can introduce from the cooling air of inner face cooling combustion tube and the cooling air of cooling combustion tube from the outside, the red heat that can not only stop combustion barrel can also be from the top stably to combustion barrel supply burning auxiliary air.

Invention according to the 2nd scheme, in the front portion that is arranged at thermal insulation board, the opening that outer gas can be formed in the top rake portion of guiding below tiltedly gradually, can play the effect of the air introducing portion in the combustion barrel that the part of flow air between air channel and thermal insulation board is introduced, thereby, by the part of flow air between air channel and thermal insulation board, can be from inner face cooling combustion tube, simultaneously, can also stop flame to spread, thereby can prevent from effectively to produce fervid in the front portion of combustion barrel to side direction.

Invention according to the 3rd scheme, at the rear portion that is arranged at thermal insulation board, can be with the outer gas opening that forms in the rear-inclined portion of guiding upward gradually, can play the effect of outer gas being guided to the intake below the thermal insulation board, add the effect of the invention of claim 2, can promote the cooling below the thermal insulation board, and can easily the top of burning gases be controlled to oblique front lower place.

Below briefly explain accompanying drawing.

Fig. 1 is the cross-sectional side view of an embodiment constituting of the integral body of warm-air heating radiator of the present invention.

Fig. 2 is the cross-sectional side view after the top of the warm-air heating radiator among Fig. 1 is amplified.

Fig. 3 is the oblique view of an embodiment of the thermal insulation board of the present invention when the rear is observed under tiltedly.

Fig. 4 is the oblique view of another embodiment of the thermal insulation board of the present invention when the rear is observed under tiltedly.

Fig. 5 is the oblique view of an embodiment of burner of the present invention.

Fig. 6 is the oblique view of an embodiment of gasification pot of the present invention (burner body).

Below in conjunction with the description of drawings embodiments of the invention.

In Fig. 1 and Fig. 2, the 1st, be the warm-air heating radiator (below be called room heater) of representative with the petroleum fan heater, room heater 1 comprise have top 2A, the metal body housing 2 of front 2B, back 2C and two sides, left and right sides 2D and the metal thicker pedestal 3 of usefulness that the lower aperture of body housing 2 can be stopped up.

Substantial middle in the front of body housing 2 partly is formed with warm braw blow-off outlet 4; be formed with the circular air inflow aperture 5 that the horn mouth of double as gas production mouth and fan 7C described later is used in the back of body housing; be installed with on the circumference of this air inflow aperture 5 and be made of metal and the fan protection device 8 used of double as filter, this fan protection device 8 has and forms netted a plurality of outer aspiration inlet 6 and convection current usefulness pressure fan 7.Convection current is made of motor 7B with rotating shaft 7A and the fan 7C that is installed on the rotating shaft 7A with pressure fan 7.

In addition, in above-mentioned body housing 2, also disposed metal air channel 9, the outer gas that air channel 9 is used for sucking from outer aspiration inlet 6 is directed to warm braw blow-off outlet 4, its end is communicated with warm braw blow-off outlet 4, and the top of the other end and air inflow aperture 5 (convection current specifically with the part of the fan 7C of pressure fan 7) is communicated with.In addition, the arrow among the figure is in order to show air-flow.

11 be provided in a side of bottom in the body housing 2, be used for burner petroleum fuel gasification and burning.This burner 11 comprises, the gasification pot 11A of the aluminium alloy system of band round-ended cylinder shape and the top, the side that are installed in this gasification pot 11A have the combustion head 11B of a plurality of glory hole 11b and be enclosed in burner shell 11C around the gasification pot 11A.(specifically please refer to Fig. 5)

The 12nd, in gasification pot 11A supply burning with primary air (below be called primary air) and in above-mentioned burner shell 11C supply burn with the combustion fan of auxiliary air (below be called auxiliary air), combustion fan 12 comprises, motor 12B with rotating shaft 12A, with the fan 12C on the rotating shaft 12A that is installed in motor 12B, be used to detect the revolution of rotating shaft 12A and have illuminating part and the optical sensor 12D of photographic department.

The intake line 13 of above-mentioned combustion fan more stretches out than the back 2C of body housing 2, is provided with filter 14 on its suction inlet (top of intake line) 13A.In addition, the position of suction inlet 13A is not limited to the back 2C of body housing, also can be in the left and right side.

The 15th, be used for burning primary air service duct to gasification pot 11A supply primary air; The 16th, be used for the burning SAS Secondary Air Supply passage of supplying secondary air in burner shell 11C; The 17th, be configured to connect whole burning with primary air passage 15, as nozzle to the fuel supply device of gasification pot 11A supply liquid fuel; The 18th, fire ring; 19 be provided in a side of gasification pot 11A top, with the opposed a plurality of recuperation of heat protuberances of glory hole 11b of combustion head 11B; The 20th, flame sensor; The 21st, ignition spark plug.

In addition, recuperation of heat needn't be corresponding one by one with glory hole 11b with protuberance 19.

22 are provided in a side of metal system combustion barrel in the above-mentioned air channel 9, upper opening, this combustion barrel 22 is with the state around the top (particularly burner shell 11C) that covers above-mentioned burner 11, erectly be located on the bottom surface in air channel 9, the burning gases that produce in the burner 11 peristome 22B of portion from it flow out.Above-mentioned convection current is configured to combustion barrel 22 opposed with the propeller type fan 7C of pressure fan 7, the height of combustion barrel 22 as shown in Figure 1, and is roughly the same with the top height of motor 7B.

23 are provided in a side of the observation window that is used to observe flame of combustion barrel 22 fronts.This observation window 23 is will be as the transparent micarex 23A that observes with member, closely is fixed on the anterior outside of combustion barrel 22 and formation with fixture 23B.Observation transparent component as observation window 23, preferably use material with hear resistance and abundant intensity, for example, though also can replace micarex 23A with thin glass plate, but it is because damaged easily under the effects such as heating power of flame and burning gases, thereby inapplicable.In addition, if micarex 23A closely is not fixed to the outside of combustion barrel 22, the hot gas of combustion barrel 22 inside and burning gases will outwards leak from its gap, the problem of carbon monoxide occurs producing, so closely fixedly micarex 23A is extremely important.

In Fig. 1, F is the approximate shape that naked eyes can observed flame when being in normal combustion in strong fired state, FX be under condition same as described above, detect by an unaided eye less than the approximate shape of actual flame.

30 are provided in a side of the thermal insulation board of being made by aludip between the end face 9A in combustion barrel 22 and air channel 9.As shown in Figure 3, this thermal insulation board 30 is formed with the end face 31 with the end face 9A in air channel 9 face-off, with the top rake portion 32 of the high-dipping that is bent to form below tiltedly respectively in its front part and rear portion and semi-steep rear-inclined portion 33, lappet 35 under lappet 34 and the back under before also being formed with simultaneously, before down lappet 34 lower end of rake 32 is further sagging downwards and extend to till the position that the front portion with combustion barrel 22 overlaps in the past, back lappet 35 down is further sagging downwards and extend to till the top with combustion barrel 22 from the lower end of rear-inclined portion 33.

The left and right sides at the end face 31 of thermal insulation board 30, right-angle bending has formed side band part 36,36 downwards respectively, at the rear side of these side band parts 36,36, formed to side direction extend the top, back crooked downwards, as the back stator portion 37,37 of the 1st fixed part.On the both ends of preceding down lappet 34, formed be used for thermal insulation board 30 be fixed on the sidewall in air channel 9, that have pawl and screw hole, as the preceding stator portion 38,38 of the 2nd fixed part.Each stator portion 37 and 38 is inserted into respectively carry out in the hole (scheming not shown) that on the sidewall in air channel 9 and antetheca, forms temporary fixed after, in addition formally fixing by spot welding again to each stator portion.

In addition, shown in the dotted line of Fig. 3, the following lappet 35 that forms on the trailing edge of semi-steep rear-inclined portion 33 is considered the direction of rotation of propeller type fan 7C and the factor of air-flow, and its right side part 39 is cut.

The 40th, preceding hole is the opening that is used for gas outside the front portion of combustion barrel 22 imports that is forming in the top rake portion.In the present embodiment, the center on width in above-mentioned preceding hole 40 is overlapped with the center of combustion barrel 22, form width and be 66mm, highly be the slot of 16mm.But the shape in this hole and the center on width are not limited to this example, can be oval or just two ends be semi-circular shape.The 41st, metapore, be form in the rear-inclined portion 33 be used for below the end face 31 of thermal insulation board 30 and the front portion of combustion barrel 22 import outside the opening of gas.In the present embodiment, it is the slotted hole (wide 80mm, high 15mm) that two ends are semicircle shape that this metapore 41 forms, but its shape is not limited to this example, can be shapes such as circle, ellipse, quadrangle, triangle.

In Fig. 2, solid arrow shows is the general situation of the air-flow when burning, and single-point line arrow shows is general situation from opening 40 and 41 air draughts that import.

Owing to be formed at top rake portion 32 upper sheds 40 that are located at the anterior of thermal insulation board 30 and outer gas can be guided gradually downwards, can play the effect that the part of flow air between air channel 9 and thermal insulation board 30 is imported to the air introduction part in the combustion barrel 22, therefore can be between air channel 9 and thermal insulation board 30 part of flow air (outer gas) import to the front portion of combustion barrel 22 energetically, can not only be from inner face cooling combustion tube 22, and can also control flames F exiting spreading effectively to side direction.Thereby, can prevent the long-time phenomenon that contacts with flame and cause combustion barrel 22 generation red heat easily in the sort of front portion (particularly observation window 23 peripheral part) in the past owing to combustion barrel 22.

Owing to be formed at the opening 41 on rear portion that is located at thermal insulation board 30 and the rear-inclined portion 33 that outer gas can be guided gradually upward, can play effect with the introducing port of outer conductance below the end face 31 of thermal insulation board 30, therefore can promote the cooling below the thermal insulation board 30, and the top of burning gases can be pushed to oblique front lower place, thereby can control the suffered heating power influence of thermal insulation board 30.

And, by two openings 40,41, also can supplying secondary air from the last direction of combustion barrel 22, therefore, can realize from both direction supplying secondary air up and down.

In the above-described configuration, for example, interval L1 under the top opening 22B end of combustion barrel 22 and the back between the lower end of lappet 35 is about 8mm, the top opening 22B end and the convection current of combustion barrel 22 are about 14mm with the interval L2 between the extended line of the rotating shaft 7A of pressure fan 7, the top opening 22B end of combustion barrel 22 and the interval L3 between the thermal insulation board 30 are about 20mm, then the ratio between each interval is L1: L2: L3=1: about 1.75: about 2.5.In addition, interval L4 between the top opening 22B end of the lower end of the preceding lappet 34 down in air channel 9 and combustion barrel 22 is about 33mm, the internal diameter of combustion barrel 22 is about 140mm, the bottom in air channel 9 is 120mm to convection current with the height h1 of the extended line of the rotating shaft 7A of pressure fan 7, and the height h2 of the top 9A in the bottom in air channel 9 to air channel 9 is 204mm.

Fig. 4 shows another embodiment of thermal insulation board.Among the figure with the thermal insulation board 30 of Fig. 3 in identical symbolic representation and the appropriate section among Fig. 3 part with identical formation and function.The 50th, another thermal insulation board, the 51st, with the part of the front portion of the end face 31 of thermal insulation board 50 along the width perk and form perk sheet 52 and the opening that constitutes.

By making perk sheet 52 tilt and forcibly make the part of flow air between the end face 31 of the top in air channel 9 9A and thermal insulation board 50 change the flow direction down to oblique rear, and from this opening 51 to the below of thermal insulation board 50, particularly gas outside the front face guiding of combustion barrel 22.

By forming above-mentioned opening 51, the burning gases that produce can not only be guided into the place ahead (being warm braw blow-off outlet 4 residing directions specifically) in combustion process, and gas outside can also importing to the front portion of combustion barrel 22, thereby can import downwards from the top effectively from the cooling air of inner face cooling combustion tube 22 and the cooling air of cooling combustion tube 22 from the outside, thereby can suppress and prevent to produce fervid phenomenon at combustion barrel 22 (particularly anterior), and can be from the top of combustion barrel 22 supplying secondary air stably.

In above-mentioned formation, the burning gases (with reference to the FX among the figure) that produce because of the burning of burner 11 rise in combustion barrel 22, be released in the thermal insulation board 30 behind the upper opening 22B by combustion barrel 22, and mix with the outer gas that pressure fan 7 blows out with convection current from the back that is located at body housing 2, blow out from warm braw blow-off outlet 4 after becoming warm braw, be heating of house.

Can suppress the rising of rotating shaft 7A temperature by the air that blows out with pressure fan 7 from convection current, thereby can overcome the sort of in the past because of temperature rise the lubricating oil evaporation make bearing portion or sclerosis and and then cause drawbacks such as rotating shaft 7A can not rotate sleekly.In addition, by lappet 35 under rear-inclined portion 33 and the back, can will suitably be assigned to from the air that convection current is sent with pressure fan 7 combustion barrel 22 above between the top 9A between opening 22A and the thermal insulation board 30 and thermal insulation board 30 and air channel 9, thereby not only can realize stable burning, and it is overheated to prevent effectively that body housing 2 from producing

But, if be located at that filter (scheming not shown) on the suction inlet 13A of intake line 13 of combustion fan 12 takes place to stop up or blocked by curtain etc., can be owing to the primary combustion of supplying in gasification pot 11A reduces with air capacity, the auxiliary air amount of supplying in burner shell 11C also reduces, and the not enough state of air feed occurs.At this moment, the flames F exiting that forms on the glory hole 11b of a combustion 11B can present flourishing state because oxygen is not enough, not only the temperature of flame reduces, the temperature of burning gases also reduces, and the profile FX high position of the profile of flame when also reaching than normal combustion, therefore thermal insulation board 30 is directly heated.And, when oxygen is not enough, also can cause the discharge rate of carbon monoxide to increase owing to producing unburned gas.

In the present embodiment, by the metapore 41 of rear-inclined portion 33 and the back otch 39 of lappet 35 or the back gap between upper end 22 B of lappet 35 and combustion barrel 22 down down, the part of the wind that will send with pressure fan 7 from convection current import to combustion barrel 22 above the space between opening 22B and the thermal insulation board 30, so can supply extraneous air (fresh air) with the angle of approximate right angle to outstanding flames F exiting X from top opening 22B, under the effect of this fresh air, make the burning of flames F exiting X obtain promoting, and flare is shortened, can avoid flame to be blown simultaneously from warm braw blow-off outlet 4.In addition, owing to burning is promoted to make the carbon monoxide among the flames F exiting X to become carbon dioxide, so can reduce the generation of carbon monoxide.

In addition, in the above-described embodiments,,, simplify formation so can reduce number of components and parts because the various piece of thermal insulation board 30 or 50 is by crooked and integrally formed.

Fig. 5 is the enlarged drawing that is applicable to the major part of burner 11 of the present invention.As described above, burner 11 comprises, gasification pot 11A, with the combustion head 11B that is installed on this gasification pot 11A, with fire ring 61, this fire ring 61 be located at this combustion head 11B around, have opposed and from the upper end to the root, offered the broach shape annular wall of a plurality of otch S with the glory hole 11b of combustion head 11B, with to ignition spark plug 21 and flame sensor 20 from the ignition of mixed gas of the petroleum fuel of the glory hole 11b of combustion head 11B ejection and primary air; Its formation is; the insulator of above-mentioned ignition spark plug 21 and flame sensor 20 is located at the outside of the annular wall (being fire ring 61) of above-mentioned broach shape; on above-mentioned broach shape annular wall and the opposed part of insulator flame sensor 20 and ignition spark plug 21, formed not with otch S or the otch insulator protection 61P of portion, the 61Q more shallow than other parts.

The 62nd, gasification pot 11A can be heated to the temperature (for example 250 ℃) of setting above, as the heating armouring electric heater of the electric heater that gasifies, be configured to roughly in the form of a ring in the inside on the top of gasification pot 11A, draw from one again.The extension of this electric heater 62 is called lead division 62A, on the opposed part of lead division 62A fire ring 61 and electric heater, has formed not with otch S or the otch protection portion 61R more shallow than other parts.

According to said structure, when weak burning, the flame that forms on glory hole 11b is less, because auxiliary air flow into the inboard of fire ring 61 from the otch S of the annular wall of broach shape, therefore, under the effect of the auxiliary air that flows into fire ring 61 inboards, the flame burning reaction obtains promoting, can carry out the low good combustion of carbon monoxide generating capacity.When strong burning, the flame that forms on glory hole 11b is bigger, and the heat of this flame is absorbed with protuberance 19 by the annular wall of broach shape and recuperation of heat, thereby can reduce the temperature of flame, reduces the generating capacity of nitrogen oxide.

And; because on fire ring 61; on the part corresponding with each insulator of ignition spark plug 21 and flame sensor 20; be formed with insulator protection 61P of portion and 61Q; therefore; not only can lean on this insulator protection 61P of portion and 61Q to accept flame; can also stop flame to spread to side direction; the flow direction that makes flame is towards the top; and the temperature that can prevent and suppress the insulator of ignition spark plug 21 and flame sensor 20 rises to more than the heat resisting temperature, so just can prevent that conscientiously ignition spark plug 21 and flame sensor 20 are subjected to fire damage with simple formation.

In addition; because having formed on the opposed part of lead division 62A fire ring 61 and electric heater does not have the protection of the otch S 61R of portion; therefore; though owing to the existence of lead division 62A is hindered the air-flow of the auxiliary air that is guided upward from the below; and therefore make and the so-called air curtain effect of flame inward direction pushing can be subjected to local failure; but by the above-mentioned protection 61R of portion; can accept flame; stop flame to spread to side direction; and the flow direction that can make flame is towards the top, thereby can suppress and prevent the incidental fervid phenomenon of part nearby at the lead division 62A that is positioned at electric heater of combustion head 22.

Fig. 6 is the enlarged drawing of major part that is applicable to the gasification pot 11A of burner 11 of the present invention.Its formation is, can supply on the upper end of band round-ended cylinder shape gasification pot 11A of liquid fuel and primary combustion air to inside, be provided with and the glory hole 11b of combustion head 11B opposed a plurality of (being 6 in the present embodiment) recuperation of heat with protuberance 19.The 62nd, above-mentioned armouring electric heater.

According to said structure, when weak burning, it is less that flame becomes, flare is near the glory hole 11b of combustion head 11B, but, by recuperation of heat protuberance 19, the upper end of combustion head 11B and gasification pot 11A makes the temperature heating of gasification portion (being in the gasification pot) remain to the temperature (about for example 330 ℃～370 ℃) that is fit to liquid fuel gasification fully to be heated by flame near fiery state.On the other hand, when strong burning, it is bigger that flame becomes, though the high-temperature portion of flame is left the part of glory hole 11b, but be enclosed in the flame high-temperature portion with protuberance 19 and heated owing to be located at a plurality of (being 6 in the present embodiment) recuperation of heat on the gasification pot 11A upper end, then, can be transmitted to the bottom of gasification pot 11A again with the heat of protuberance 19 by the warmed-up recuperation of heat of high temperature, therefore, when strong burning, can significantly increase the recuperation of heat amount.

As shown in Figure 6, above-mentioned each recuperation of heat is cylindric respectively with protuberance 19, about 6～the 8mm of its diameter, high about 8～10mm, with about equally interval of mutual maintenance (for example about 25～35mm) are located at the upper end of gasification pot 11A in the form of a ring along circumferencial direction, and with gasification pot 11A altogether for forming.

As mentioned above, can be in the range of temperature of in the broad range that is burned to weak burning by force, dwindling gasification pot 11A, make the burning about the vaporized state that is subjected to fuel in the broad range that is burned to weak burning by force, keep stable, realize the stable of flame current, and can reduce the generating capacity of carbon monoxide, and rely on recuperation of heat to be used for lowering the nitrogen oxide that produces when the low temperature, expansion combustion range with the recuperation of heat of protuberance 19.

Invention according to the 1st scheme, the opening that on thermal insulation board, is provided with, can not only play the burning gases effect of the targeting port of (direction at warm braw blow-off outlet place) guiding forwards, and can also play the effect of the introduction part of gas outside the front portion of combustion barrel imports, therefore, can guide simultaneously from the cooling air of inner face cooling combustion tube and the cooling air of cooling combustion tube from the outside, can not only suppress and prevent the red heat of combustion barrel, and can stably supply the burning auxiliary air from the top.

Invention according to the 2nd scheme, because thermal insulation board is anterior and the opening that outer gas forms in the top rake portion of guiding below tiltedly gradually can be able to be played the effect that the part of flow air between air channel and thermal insulation board is imported the air introduction part in the combustion barrel being arranged at, therefore can will between air channel and thermal insulation board, the part of flow air guide the front portion of combustion barrel energetically into, thereby can not only inner face cooling combustion tube, can also suppress flame and spread, thereby can more effectively suppress the front portion generation red heat of combustion barrel to side direction.

Invention according to the 3rd scheme, since be arranged at the thermal insulation board rear portion and can with outer gas gradually obliquely upward in the rear-inclined portion of guiding the opening that forms can play the effect of outer conductance being gone into the introducing port below the thermal insulation board, therefore, except the effect of the invention of claim 2, can also promote the cooling below the thermal insulation board, and the top of burning gases can be pushed to oblique the place ahead, thereby can suppress heat affecting thermal insulation board.

Claims (3)

1, a kind of warm-air heating radiator, comprise: the body housing, outside it has the back of aspiration inlet and warm braw blow-off outlet be installed with can aspiration inlet suction from above-mentioned outside outer gas be fed to the convection current pressure fan of above-mentioned warm braw blow-off outlet, with be installed within the above-mentioned body housing, outer gas aspiration inlet outside above-mentioned can be directed to the air channel of warm braw blow-off outlet, with be installed in the above-mentioned air channel, the combustion barrel of upper opening, with the burner that is installed in above-mentioned combustion barrel bottom, and be located at thermal insulation board between the top in above-mentioned combustion barrel and above-mentioned air channel, it is characterized in that the opening of gas outside described thermal insulation board is provided with and can imports to the front portion of above-mentioned combustion barrel.

2, warm-air heating radiator as claimed in claim 1, it is characterized in that, being provided with in the front portion of above-mentioned thermal insulation board can be with the outer gas top rake portion of guiding below tiltedly gradually, in this top rake portion, be provided with can be between air channel and thermal insulation board flow air introduce above-mentioned opening in the above-mentioned combustion barrel.

3, warm-air heating radiator as claimed in claim 2, it is characterized in that, be provided with the rear-inclined portion that outer gas can be guided gradually upward at the rear portion of above-mentioned thermal insulation board, with from further sagging downwards following lappet portion of this rear-inclined portion, in above-mentioned rear-inclined portion, be provided with the opening that outer gas can be guided to below the above-mentioned thermal insulation board.

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