CN202766958U - Linear heater, heating device for screed in spreading machine and spreading machine - Google Patents

Abstract

The utility model discloses a linear heater which comprises an air inlet pipe (1) and a linear heating pipe (2) communicated with the air inlet pipe. A plurality of fire spraying openings (3) distributed in the length direction are formed in the linear heating pipe; the fire spraying openings comprise at least one fire spraying opening (33); and the fire spraying direction of the first fire spraying opening is inclined away from the air inlet pipe in the length direction of the linear heating pipe. The utility model further provides a heating device for a screed in a spreading machine, which adopts the linear heater, and a spreading machine adopting the heating device. As the fire spraying openings of the linear heater comprise at least one fire spraying opening which is outward inclined away from the air inlet pipe, compared with the prior art in which the all the fire spraying openings are perpendicular to the length direction of the linear heating pipe, the linear heater can improve the heating uniformity of the linear heating pipe and the practicability of the heating device and the spreading machine.

Description

The heater of screed and paver in line style heater, the paver

Technical field

The utility model relates to line style heating field, particularly, relates to a kind of line style heater, uses the heater of screed in the paver of this line style heating and uses the paver of this heater.

Background technology

At present, there is a kind of mode by the heating of line style heater in the heating field of screed in paver, as shown in Figure 1, this line style heater is arranged on the screed casing 6 usually, and can carry out the flame heating to screed, because more than 6 of screed casings, so the line style heater on each screed casing 6 has then formed the heater to the screed heating.Wherein, this line style heater generally includes the air inlet pipe 1 of feed combustion gas and the line style heating tube 2 that is communicated with this air inlet pipe 1, and this line style heating tube designs for linear pattern, is provided with a plurality of boccas 3 along its length direction.In use, shown in the direction of arrow, only need light the line style heater on one of them screed casing 6, can be by this casing its adjacent casing that ignites, and the line style heater on all casings that finally ignite, thus finish heating to screed.

At present, because design only has one in the air inlet pipe 1 at each line style heating tube 2 middle part usually, the line style heating tube shorter for length can satisfy use, yet for long line style heating tube, the hypodynamic problem of gas pressure at line style heating tube two ends can occur.And in order to consider the uniformity that screed is heated, these a plurality of boccas 3 are designed to measure-alike and are evenly distributed in the prior art.Yet, owing to can diminish gradually away from the bocca gaseous-pressure of air inlet pipe 1, so that the gas supply of this part bocca is not enough, cause its phenomenon that combustion instability occurs, even the problems such as flame-out or tempering occur.And because the direction of these a plurality of boccas 3 all is designed to the length direction perpendicular to line style heating tube 2, therefore the heating heat that produces easily concentrate in the line style heating tube 2 near air inlet pipe 1 the middle part, then heat heat away from the end of air inlet pipe 1 lower, thereby cause the heating uniformity of line style heating tube poor.

In addition, in prior art shown in Figure 1, because the width that is shorter in length than screed casing 6 of line style heating tube 2, therefore after adjacent two casings connect, can there be certain intervals between adjacent two line style heating tubes, and the flame direction of bocca 3 all perpendicular to the length direction setting of line style heating tube, therefore the flame 5 of ejection all sprays towards the dead ahead, add the gaseous-pressure meeting less of line style heating tube 2 ends, therefore, can there be the uncertainty of igniting between the adjacent casing, namely there is can not the ignite problem of the line style heater in the adjacent casing of the bocca 3 of adjacent line style heating tube 2 ends, this can cause adjacent casing internal combustion gas leakage and contaminated environment, even fires, the dangerous problem such as tempering.

Therefore, provide a kind of line style heater that can solve at least one technical problem in the above-mentioned prior art problem to have positive effect.

The utility model content

The purpose of this utility model provides a kind of line style heater, and this line style heater can provide heating uniformity.

Another purpose of the present utility model provides the heater of screed in a kind of paver, the line style heater that this heater uses the utility model to provide.

Another purpose of the present utility model provides a kind of paver, the heater that this paver uses the utility model to provide.

To achieve these goals, according to an aspect of the present utility model, a kind of line style heater is provided, described line style heater comprises air inlet pipe and the line style heating tube that is communicated with this air inlet pipe, be provided with a plurality of boccas of arranging along its length on the described line style heating tube, wherein, described a plurality of boccas comprise at least one first bocca, and the flame direction of this first bocca tilts towards the length direction away from the described line style heating tube of described air inlet pipe.

Preferably, described the first bocca is positioned at described line style heating tube end.

Preferably, the two ends of described line style heating tube are provided with described the first bocca.

Preferably, described bocca also comprises a plurality of the second boccas that are positioned at described the first bocca inboard, and the flame perpendicular direction of this second bocca is in the length direction of described line style heating tube.

Preferably, described bocca also comprises a plurality of the second boccas that are positioned at described the first bocca inboard and the 3rd bocca that is positioned at these a plurality of the second bocca centers, the 3rd bocca is corresponding with described air inlet pipe, wherein, the flame direction of described the 3rd bocca tilts towards the both sides away from described air inlet pipe simultaneously, and the flame direction that is positioned at described second bocca of the 3rd bocca both sides tilts towards the both sides away from described air inlet pipe respectively.

Preferably, the angle of inclination of the flame direction of described the 3rd bocca is less than the angle of inclination of the flame direction of described the first bocca, and the angle of inclination of the flame direction of described the second bocca becomes large from described the 3rd bocca gradually to described the first bocca.

Preferably, described line style heating tube comprises tubular body and corrugated sheet, described tubular body is formed with the spit tube of protrusion along its length, described corrugated sheet is clamped in this spit tube, along the length direction layout of described tubular body, described bocca is formed between the ripple and described spit tube of described corrugated sheet the ripple of described corrugated sheet in described spit tube.

Preferably, in described corrugated sheet, the peak line or the hollow line that form between the adjacent corrugations of described the first bocca are the angle setting.

According on the other hand of the present utility model, the heater of screed in a kind of paver is provided, this heater comprises successively a plurality of line style heaters of interval setting, the line style heater that described line style heater provides for the utility model.

Provide a kind of paver more on the one hand according to of the present utility model, the heater that this paver comprises screed and heats for this screed, wherein, the heater of screed in the paver that described heater provides for the utility model.

Pass through technique scheme, because in a plurality of boccas of the line style heater that the utility model provides, comprise the first bocca that at least one tilts laterally away from air inlet pipe, therefore compared to existing technology in a plurality of boccas all perpendicular to the arrangement of line style heating tube length direction, the heating uniformity of line style heating tube can be improved, and heater that the utility model provides and the practicality of paver can be promoted.

Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.

Description of drawings

Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of manual, is used from explanation the utility model with the following specific embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of line style heater that is positioned at the adjacent casing of screed in the prior art;

Fig. 2 is the side-looking structural representation of the line style heater that provides of the utility model;

Fig. 3 is the broken section enlarged drawing of A section among Fig. 2;

Fig. 4 is a kind of schematic diagram that the bocca of the line style heater that provides of the utility model the first embodiment distributes, and wherein roughly represents air inlet pipe;

Fig. 5 is the another kind of schematic diagram that the bocca of the line style heater that provides of the utility model the first embodiment distributes, and wherein roughly represents air inlet pipe;

Fig. 6 is another schematic diagram that the bocca of the line style heater that provides of the utility model the first embodiment distributes, and wherein roughly represents air inlet pipe;

Fig. 7 is a kind of structural representation of the line style heater that provides of the utility model the second embodiment;

Fig. 8 is the schematic diagram of the another kind of structure of the line style heater that provides of the utility model the second embodiment;

Fig. 9 is the structural representation of the line style heater that provides of the utility model the 3rd embodiment;

Figure 10 is the schematic perspective view of corrugated sheet among Fig. 4.

Description of reference numerals

1 air inlet pipe, 2 line style heating tubes

3 boccas, 4 lighting-up tuyeres

5 flames, 6 screed casings

21 tubular bodies, 22 corrugated sheets

31 near-end boccas, 32 far-end boccas

33 first boccas 34, the 34 ' second bocca

35 the 3rd boccas, 11 inlet manifolds

211 spit tubes, 311 first near-end boccas

312 second near-end boccas, 321 first far-end boccas

322 second far-end boccas

A upper plate b lower plate

C peak line d hollow line.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.

In the utility model, in the situation that do not do opposite explanation, the noun of locality that uses normally defines as benchmark with corresponding page shown in the drawings such as " upper and lower, left and right ", and " length direction " is the fixed direction that is shaped as benchmark with the line style heater, particularly can be with reference to the length direction such as the spit tube 211 among Fig. 4 to Fig. 6, and the length direction of line style heating tube 2 among Fig. 7 to Fig. 9.These nouns of locality only are used for explanation the utility model, are not limited to the utility model.

Extremely shown in Figure 9 such as Fig. 1, in the paver that the utility model provides, the line style heater that heats for screed comprises air inlet pipe 1 and the line style heating tube 2 that is communicated with this air inlet pipe 1, to provide combustion gas by air inlet pipe 1 as line style heating tube 2, and be provided with a plurality of boccas 3 of arranging along its length on this line style heating tube 2, thereby heat the screed (not shown) by lighting these boccas 3.Particularly, in optimal way as shown in Figure 3, line style heating tube 2 comprises tubular body 21 and corrugated sheet 22, and tubular body 21 is formed with the spit tube 211 of protrusion along its length, corrugated sheet 22 is clamped in this spit tube 211, also can be fixed by the rivet (not shown) in case of necessity.And as shown in Figs. 4-6, the ripple of corrugated sheet 22 is arranged in spit tube 211 along its length, therefore, so that bocca 3 is formed between the ripple and spit tube 211 of corrugated sheet 22, namely form described bocca 3 by the ripple of corrugated sheet 22 and the up and down both sides of spit tube 211.

In order to solve in the prior art problem away from the bocca combustion instability of air inlet pipe 1, in the first embodiment of the present utility model, in two boccas 3 of at least one group of adjacent setting, bocca 3 near air inlet pipe 1 is near-end bocca 31, bocca 3 away from air inlet pipe 1 is far-end bocca 32, wherein, the area of this near-end bocca 31 is less than the area of far-end bocca 32.It is that utility model of the present utility model is contemplated that: the bocca 3 that comprises at least one group of adjacent setting, wherein the area of the far-end bocca 32 far away apart from air inlet pipe 1 is greater than the area of the nearer near-end bocca 31 of distance air inlet pipe 1, therefore so that far-end bocca 32 can hold more combustion gas, thereby can overcome in the prior art, owing to the problem of far-end bocca 32 poor combustion stability that the less combustion gas density that has of gaseous-pressure causes not away from air inlet pipe 1.Therefore, with respect to the line style heater that bocca evenly is set in the prior art, line style heater combustion stability provided by the utility model is higher.

Need to prove, the structure that can realize technique scheme has multiple, such as the generation type of bocca 3, arrangement form etc., therefore the utility model for convenience of description, at this introduction preferred structure wherein, these preferred structures only are used for explanation the utility model, are not limited to the utility model.

In order to promote practicality of the present utility model, in a kind of preferred structure in the utility model the first embodiment as shown in Figure 4, in the bocca 3 of any one group of adjacent setting, comprise one near near-end bocca 31 and the far-end bocca 32 away from air inlet pipe 1 of air inlet pipe 1, and the area of near-end bocca 31 is less than the area of far-end bocca 32.In the present embodiment, near-end bocca 31 comprises the first near-end bocca 311 adjacent with air inlet pipe 1, far-end bocca 32 comprises the second far-end bocca 322 that is positioned at line style heating tube 2 ends, wherein as the area of the second far-end bocca 322 of far-end bocca 32 greater than the area as the first near-end bocca 311 of near-end bocca 31, and in this preferred structure, extremely shown in Figure 6 such as Fig. 4, from the first near-end bocca 311 to second far-end boccas 322, the area of a plurality of boccas 3 increases gradually, and namely the area from the bocca 3 of contiguous air inlet pipe 1 to the bocca 3 that is positioned at the end becomes large gradually.Wherein those skilled in the art can be understood that, although Fig. 4 to Fig. 6 has only identified the relevant bocca 3 that is positioned at air inlet pipe 1 left side, each bocca 3 symmetry in each bocca 3 of being positioned at air inlet pipe 1 right side and left side can be set, adopt the area from the bocca 3 of contiguous air inlet pipe 1 to the bocca 3 that is positioned at the end to become gradually large mode namely equally on the right side of air inlet pipe 1.Therefore the design of a plurality of boccas in the line style heater that provides of this preferred structure is optimized more, can adapt to better the combustion gas that pressure diminishes gradually.When guaranteeing to realize the utility model purpose, so that structure is more reasonable.

Particularly, to shown in Figure 6, near-end bocca 31 also comprises the second near-end bocca 312 adjacent with the second far-end bocca 322 such as Fig. 4, and 32 of far-end boccas also comprise the first far-end bocca 321 adjacent with the first near-end bocca 311.Wherein the first near-end bocca 311 and the first far-end bocca 321 form one group of adjacent near-end bocca 31 and far-end bocca 32 near air inlet pipe 1; The second near-end bocca 312 and the second far-end bocca 322 form one group of near-end bocca 31 and far-end bocca 32 that is positioned at line style heating tube end.Therefore, a plurality of boccas 3 of the line style heating tube that provides of the utility model can be comprised of many groups of adjacent near-end boccas 31 and far-end bocca 32.

In the further preferred structure of the first embodiment, as shown in Figure 5 and Figure 6, also comprise lighting-up tuyere 4 in the line style heater, this line style heater of lighting-up tuyere 4 that comprises is lighted by lighting-up tuyere 4, for example at this lighting-up tuyere 4 ignition installation is set, with the combustion gas of this lighting-up tuyere 4 of at first igniting, thereby realizes the burning of other boccas 3, and ignite that other are adjacent and line style heater not set-point burner is finally realized the burning of all line style heaters by this line style heater.Wherein, this lighting-up tuyere 4 is arranged on the line style heating tube 2 accordingly with air inlet pipe 1, and for the ease of lighting, the area of this lighting-up tuyere 4 is greater than the area of the bocca 3 that is adjacent, in the optimal way such as Fig. 4 to Fig. 6, namely greater than the area of the first near-end bocca 311, so that lighting-up tuyere 4 to be holding more combustion gas, thereby improve the ignition effectiveness of the line style heater that the utility model provides.

In order to realize the technical scheme of above-mentioned the first embodiment, take Fig. 2 and preferred structure shown in Figure 3 as the basis, wherein bocca 3 has spit tube 211 and the corrugated sheet 22 that is clamped in this spit tube 211 to form, wherein spit tube 211 comprises upper plate a and the lower plate b of clamping corrugated sheet 22, as shown in Figure 4, in the embodiment of burner 4 of not setting up an office, distance between upper plate a and the lower plate b increases at the mind-set two ends from corresponding with air inlet pipe 1 gradually, the height of the ripple of corrugated sheet 22 (the above-below direction size in the page) accordingly from corresponding with air inlet pipe 1 the mind-set two ends increase gradually so that the area of bocca 3 become gradually large.As shown in Figure 5 and Figure 6, be provided with lighting-up tuyere 4 mode in, in order to adapt to area greater than adjacent bocca 3(the first near-end bocca 311) the shape of lighting-up tuyere 4 of area, can adopt the spit tube 211 of different structure to realize.As shown in Figure 6, on the basis of Fig. 4 shape, upper plate a and air inlet pipe 1 corresponding position is formed with projection upwards, and the height of the ripple that corrugated sheet 22 is corresponding with this projection is greater than the height of adjacent corrugations, thus formation lighting-up tuyere 4.And as shown in Figure 5, the structure of spit tube 211 is consistent with Fig. 4, in order to form lighting-up tuyere 4, and therefore the width (left and right directions size in the page) of the ripple that corrugated sheet 22 and air inlet pipe 1 are corresponding can realize that the area of lighting-up tuyere 4 is greater than adjacent bocca 3(the first near-end bocca 311 greater than the width of adjacent corrugations) area.For above-mentioned design, those skilled in the art can expect the design of other modes, for example in Fig. 5, lower plate b can be provided with projection or upper plate a and lower plate b and be provided with projection, to form lighting-up tuyere 4.This type of design or change all should drop in the protection domain of the present utility model.

Except the first above-mentioned embodiment, in order to increase heating uniformity of the prior art, in the second embodiment of the present utility model, as shown in Figure 7 and Figure 8, a plurality of boccas 3 of the line style heating tube that the utility model provides comprise at least one first bocca 33, and the flame direction of this first bocca 33 tilts towards the length direction away from air inlet pipe 1 line style heating tube.Therefore, compared to existing technology in the equal vertical length direction of the flame direction of a plurality of boccas mode of arranging, can improve the heating uniformity away from the part of air inlet pipe 1.

Further, on this basis in order to overcome the problem of the inconvenience of igniting between the line style heater between the adjacent casing 6 in the prior art, in the second embodiment of the present utility model, as shown in Figure 7 and Figure 8, in the line style heater that the utility model provides, the first bocca 22 that the flame direction is obliquely installed is positioned at the end of line style heating tube 2, because the flame direction of this first bocca 33 tilts towards the length direction away from the line style heating tube 2 of air inlet pipe 1, (can with reference to the arrangement of the adjacent line style heating tube 2 of figure 1) namely can tilt towards adjacent line style heating tube 2, therefore, even be positioned at the end bocca 3 ejection flame 5 intensity relatively a little less than, because the flame 5 of its ejection can spray towards adjacent with it line style heating tube 2, can effectively promote the certainty of the line style heating tube that ignites adjacent, cause the problems such as gas leakage to solve the line style heating tube owing in time not igniting adjacent that exists in the prior art.Wherein, the form of structure that can realize the technical scheme that the second embodiment is above-mentioned has multiple, for convenience of description, and in this introduction preferred constructive form wherein.For example as shown in Figure 7 and Figure 8, preferably, the two ends of line style heating tube 2 are provided with the first bocca 33, the line style heating tube 2 that is positioned at its both sides to ignite simultaneously.

Wherein, in a kind of preferred structure as shown in Figure 7, bocca 3 also comprises a plurality of the second boccas 34 that are positioned at the first bocca 33 inboards, and the flame perpendicular direction of this second bocca 34 is in the length direction of line style heating tube 2.Namely except the first bocca 33 that is obliquely installed, the second bocca 34 that is positioned at its inboard can be ejected into the dead ahead with flame 5, is positioned at the screed in dead ahead with heating.This preferred structure can effectively solve the problem of igniting of the prior art.

In addition, further, when problem is ignited in solution, in another preferred structure as described in Figure 8, the 3rd bocca 35 that bocca 3 also comprises a plurality of the second boccas 34 ' that are positioned at the first bocca 33 inboards and is positioned at this a plurality of the second boccas 34 ' center, wherein, the flame direction of the 3rd bocca tilts towards the both sides away from air inlet pipe 1 simultaneously, and the flame direction that is positioned at the second bocca 34 ' of the 3rd bocca 35 both sides tilts towards the both sides away from air inlet pipe 1 respectively.More preferably, the angle of inclination of the flame direction of the 3rd bocca 35 is less than the angle of inclination of the flame direction of the first bocca 33, and the angle of inclination of the flame direction of the second bocca 34 ' becomes large gradually from the 3rd bocca 35 to the first bocca 33.I.e. the first bocca 33 from the 3rd bocca 35 to two ends, the angle of inclination of the flame direction of bocca 3 becomes large gradually.Wherein " angle of inclination " described herein refers to the angle between the vertical direction of length direction of the flame direction of bocca 3 and line style heating tube 2.If this angle of inclination is the angle between the length direction of bocca 3 line style heating tubes 2, the first bocca 33 from the 3rd bocca 35 to two ends then, the angle of inclination of the flame direction of bocca 3 diminishes gradually.

Above-mentioned this structure has not only solved the problem of the adjacent line style heater that ignites, and can also be so that stronger to the uniformity of the heating of screed.This is owing to being positioned at the gaseous-pressure of the first bocca 33 of end and can diminishing gradually with respect to the gaseous-pressure of the 3rd bocca 35 that is positioned at the center, this can cause the heating effect of 33 pairs of screeds of the first bocca poorer than the heating effect of the 3rd bocca 35, if in the identical line style heating tube of flame direction in the prior art, this will be so that the heat that produces with respect to two ends in the middle of the line style heating tube be more concentrated, so that the heating uniformity of screed is not high.Therefore the utility model all is obliquely installed the angle of the flame direction of bocca 3, and particularly preferably the angle of inclination becomes greatly gradually, can heat more uniformly screed, thereby further promote practicality of the present utility model.

In order to realize the technical scheme of the second embodiment, namely realize being obliquely installed the flame direction of bocca 3, preferably form in the technical scheme of bocca 3 at as shown in Figures 2 and 3 the utility model, bocca 3 is formed by spit tube 211 and the corrugated sheet 22 that is clamped in the spit tube 211.Take the schematic diagram structure shown in Fig. 7 as example, the second bocca 34 that the two ends of line style heating tube 2 arrange the first bocca 33 and are positioned at the first bocca 33 inboards.Particularly as shown in figure 10, for the flame direction that makes the first bocca 33 is obliquely installed, crest or trough that the adjacent corrugations that forms this first bocca 33 only need be set become corresponding angle [alpha] to get final product.This angle [alpha] is desired angle of inclination in the utility model.

In addition, except the utility model Fig. 2 and bocca 3 generation types shown in Figure 3, in the generation type of other boccas 3, for example in the body of spit tube 211, directly form many passages that are communicated with tubular body 21, formed in the mode of bocca 3 by many passages at this, different for the area of realizing bocca 3 in the first embodiment, the cross-sectional area difference that these many passages only need be set gets final product.And for the flame direction that realizes bocca 3 in the second embodiment is different, also only needs to arrange these many passage angulations differences and get final product.This structural change that drops under the utility model design drops in the protection domain of the present utility model equally.

Except above-mentioned two embodiments, in order to solve the problems of the prior art, in the 3rd embodiment as shown in Figure 9, the air inlet pipe 1 of the line style heater that provides is for a plurality of, and these a plurality of air inlet pipe 1 are connected on the line style heating tube 2 along its length.Wherein preferably, the length direction of a plurality of air inlet pipe 1 type heating tubes 2 along the line is evenly arranged.Therefore, can better for the middle part of heating tube 2, the combustion gas that the end provides simultaneously equably, with respect to prior art, so that the distribution of combustion gas is more even, therefore can effectively promote burning quality.

In addition, in order conveniently to provide combustion gas for a plurality of air inlet pipe 1, preferably, the line style heater comprises inlet manifold 11, and a plurality of air inlet pipe 1 are communicated with inlet manifold 11.In the present embodiment, the quantity of air inlet pipe 1 is two, and these two air inlet pipe 1 and inlet manifold's 11 common Y-shaped structures that form are two air inlet pipe, 1 even air feed by inlet manifold 11 namely.More specifically, each air inlet pipe 1 all directly links to each other with the tubular body 21 of line style heating tube 2, and inlet manifold 11 then links to each other with the entrance that combustion gas is provided.Therefore, only be required to be inlet manifold's 11 air feed, combustion gas can be distributed in each air inlet pipe 1.More preferably, this inlet manifold 11 is positioned at the center on a plurality of air inlet pipe 1 arranged direction, for distributing equably combustion gas.

To sum up, the utility model the first embodiment and the second embodiment have carried out improvement the 3rd embodiment to bocca 3 planforms own then to be improved the bocca deployment scenarios the arrangement of air inlet pipe 1, above each embodiment all can solve at least one technical problem in the prior art, so that the line style heater that the utility model provides, the heater that is comprised of this line style heater and use the paver of this heater heating screed all to have higher practicality and promotional value.

Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.

Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible combinations.

In addition, also can carry out any combination between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. line style heater, described line style heater comprises air inlet pipe (1) and the line style heating tube (2) that is communicated with this air inlet pipe (1), be provided with a plurality of boccas (3) of arranging along its length on the described line style heating tube (2), it is characterized in that, described a plurality of bocca (3) comprises at least one first bocca (33), and the flame direction of this first bocca (33) tilts towards the length direction away from the described line style heating tube (2) of described air inlet pipe (1).

2. line style heater according to claim 1 is characterized in that, described the first bocca (33) is positioned at described line style heating tube (2) end.

3. line style heater according to claim 2 is characterized in that, the two ends of described line style heating tube (2) are provided with described the first bocca (33).

4. line style heater according to claim 3, it is characterized in that, described bocca (3) also comprises a plurality of the second boccas (34) that are positioned at described the first bocca (33) inboard, and the flame perpendicular direction of this second bocca (34) is in the length direction of described line style heating tube (2).

5. line style heater according to claim 3, it is characterized in that, described bocca (3) also comprises a plurality of the second boccas (34 ') that are positioned at described the first bocca (33) inboard and the 3rd bocca (35) that is positioned at these a plurality of the second bocca (34 ') centers, the 3rd bocca (35) is corresponding with described air inlet pipe (1), wherein, the flame direction of described the 3rd bocca (35) tilts towards the both sides away from described air inlet pipe (1) simultaneously, and the flame direction that is positioned at described second bocca (34 ') of the 3rd bocca (35) both sides tilts towards the both sides away from described air inlet pipe (1) respectively.

6. line style heater according to claim 5, it is characterized in that, the angle of inclination of the flame direction of described the 3rd bocca (35) is less than the angle of inclination of the flame direction of described the first bocca (33), and the angle of inclination of the flame direction of described the second bocca (34 ') becomes large gradually from described the 3rd bocca (35) to described the first bocca (33).

7. the described line style heater of any one according to claim 1-6, it is characterized in that, described line style heating tube (2) comprises tubular body (21) and corrugated sheet (22), described tubular body (21) is formed with the spit tube (211) of protrusion along its length, described corrugated sheet (22) is clamped in this spit tube (211), along the length direction layout of described tubular body (21), described bocca (3) is formed between the ripple and described spit tube (211) of described corrugated sheet (22) ripple of described corrugated sheet (22) in described spit tube (211).

8. line style heater according to claim 7 is characterized in that, in described corrugated sheet (22), the peak line (c) or the hollow line (d) that form between the adjacent corrugations of described the first bocca (33) are the angle setting.

9. the heater of screed in the paver, this heater comprise a plurality of line style heaters that interval successively arranges, and it is characterized in that, described line style heater is the described line style heater of any one among the claim 1-8.

10. paver, this paver comprise screed and be the heater of this screed heating, and it is characterized in that, described heater is the heater of screed in the paver claimed in claim 9.

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