CN2919164Y

CN2919164Y - Rise segment of temperature structure of solar cell substrate firing furnace

Info

Publication number: CN2919164Y
Application number: CNU2006200732956U
Authority: CN
Inventors: 干建军
Original assignee: Suzhou Huike Equipment Co Ltd
Current assignee: Suzhou Huike Equipment Co Ltd
Priority date: 2006-05-29
Filing date: 2006-05-29
Publication date: 2007-07-04
Anticipated expiration: 2016-05-29

Abstract

A warm-up means for the solar battery baseplate firing oven pertains to the electronic product sintering oven art, which comprises a furnace body provided with intake and exhaust pipes, a hearth, a furnace liner positioned between the hearth and the inner wall of the furnace body, a heating element positioned in the hearth. The warm-up means is characterized in that intake and exhaust chambers are formed between the furnace liner and the inner wall of the furnace body, air vents are provided respectively on the wall of the intake and exhaust chambers facing the furnace liner, the intake and exhaust chambers are respectively communicated with the intake and exhaust pipes, and the heating element includes upper and lower heating tubes which are all tungsten lights with transparent quartz tube. The warm-up means has the following advantages: because of the intake and exhaust chambers formed between the furnace liner and the furnace body, even atmosphere in the hearth is guaranteed, the air entering the exhaust chamber via the furnace liner and being discharged via the exhaust pipe; upper and lower heating tubes adopt the tungsten lights with transparent quartz tube as the heating part, which can ensure work pieces in any temperature zones in the hearth would be heated uniformly, contributing much to promoting the work piece quality and the rate of finished products.

Description

The intensification segment structure of solar cell substrate firing furnace

Technical field

The utility model relates to a kind of intensification segment structure of solar cell substrate firing furnace, is the improvement to the intensification segment structure of existing solar cell substrate firing furnace, belongs to electronic product sintering kiln technical field.

Background technology

The solar cell substrate firing furnace roughly comprises grate, body of heater, be used to phoresy the guipure that burns till workpiece, the guide rail of supporting guipure, the guipure transmission mechanism that is used to make guipure to enter and hold row to go out from other from the inlet of body of heater one end again and again, and body of heater from charging aperture to discharging opening comprise the preheating section that constitutes one on the whole that links in regular turn each other, natural cooling section, the section that heats up, constant temperature zone, rapid chilling section, cooling section low.The section that heats up is the key area of the body of heater of whole firing furnace, also comprises the part that is rapidly heated in this zone.

Because the characteristics of burning till of burning till uniqueness of solar cell substrate, for example: workpiece (solar cell substrate) gait of march is fast, reach about 2.5 meters/minute, especially when workpiece arrives at the high-temperature region of the section that heats up, heating rate often reaches about 78 ℃/sec, and the sintering time of the high-temperature region about 900 ℃ only is 4-5 second.Therefore, just be difficult to make the workpiece in the burner hearth in the extremely short time, to obtain the heat of homogeneous by the intensification segment structure in the prior art, thereby make the yield rate of workpiece low.Intensification segment structure in the prior art is by an air inlet pipe gas directly to be introduced burner hearth, and gas is disperse in burner hearth, so the uniformity of gas distribution can't ensure; Heat-insulating property as the furnace lining of the heat-insulation layer of burner hearth is poor, amount of stored heat big and the activation consumption is big, is unfavorable for energy savings; Heating element heater is selected conventional electric heating device for use, can't make the heat of workpiece acquisition homogeneous in the extremely short time of any part in the burner hearth, yet, the uniformity that guarantees the temperature at each position in the burner hearth is to ensure that fragile workpiece is burnt till and obtain the essential temperature environment of desirable yield rate smoothly, so the heating element heater of selecting usefulness at present is very to be short of.

Summary of the invention

Task of the present utility model be to provide a kind of can ensure the atmosphere evenness in the burner hearth and workpiece is in burn till under the uniform atmosphere, can guarantee in the burner hearth that the workpiece of warm area arbitrarily obtains the homogeneous heat and improves the intensification segment structure of the solar cell substrate firing furnace of workpiece yield rate and quality in the extremely short time.

Task of the present utility model is finished like this, a kind of intensification segment structure of solar cell substrate firing furnace, it comprise tool air inlet and exhaust piper 14,11 body of heater 1, burner hearth 6, be located at furnace lining 5 between burner hearth 6 and body of heater 1 inwall, be located at the heating element heater in the burner hearth 6, be characterised in that, be formed with inlet and outlet chamber 3,9 between the inwall of described furnace lining 5 and body of heater 1, and 3,9 of inlet and outlet chambers offer pore 4 respectively on the wall body of furnace lining 5, and inlet and outlet chamber 3,9 communicates with described air inlet and exhaust piper 14,11 respectively; Described heating element heater comprises upper and

lower heating tube

13,10, and upper and

lower heating tube

13,10 is respectively transparent quartz tube electricity tungsten lamp.

The material of furnace lining 5 described in the utility model is an aluminosilicate fiberboard.

Extended thermocouple 2 on the body of heater 1 described in the utility model, the lower end of thermocouple 2 is stretched in the burner hearth 6.

Advantage of the present utility model: owing to be formed with inlet and outlet chamber 3,9 between furnace lining 5 and the body of heater 1, after gas enters inlet plenum 3 from air inlet pipe 14, through pore 4, furnace lining 5 and can permeate into each position of burner hearth 6 equably, thereby ensure the atmosphere evenness in the burner hearth 6, and then gas enters exhaust chamber 9 from furnace lining 5 and is discharged by blast pipe 11; Upper and

lower heating tube

13,10 adopts transparent quartz tube electricity tungsten lamp as heating element heater, can guarantee that the workpiece of arbitrary warm area in the burner hearth obtains the homogeneous heat in the extremely short time, has good effect to improving workpiece quality and yield rate.

Description of drawings

Fig. 1 is the utility model structure chart.

Fig. 2 is application example figure of the present utility model.

The specific embodiment

In Fig. 1, the body of heater 1 of rectangular shape is fixedly arranged on the grate 15, the shape of burner hearth 6 is also rectangular, be positioned at the central authorities of body of heater 1, by aluminosilicate fiberboard as the furnace lining 5 of heat-insulation layer around burner hearth 6, see by figure, constituting inlet and outlet chamber 3,9 between the wall within the upper and lower of the upper and lower of furnace lining 5 and body of heater 1, inlet and outlet chamber 3,9 communicates with the air inlet and exhaust piper of receiving on body of heater 1 upper and lower surface 14,11 respectively, and 3,9 of inlet and outlet chambers offer pore 4 respectively on the wall body of furnace lining 5.In the present embodiment, do not need to limit, in like manner, need not limit yet for the layout type and the hole shape of pore 4 for the space size of inlet and outlet chamber 3,9.When gas is introduced into inlet plenum 3 from air inlet pipe 14, thus by pore 4 percolations (loosing) to furnace lining 5, and then by furnace lining 5 more to burner hearth 6, cover into exhaust chamber 9 by furnace lining 5 then, efflux by blast pipe 11, so can make the atmosphere in the whole burner hearth 6 be in uniform state.

With transparent quartz tube electricity tungsten lamp as upper and

lower heating tube

13,10, the two ends of each upper and

lower heating tube

13,10 are supported on the body of heater 1 by tube face 12, transparent quartz tube electricity tungsten lamp can make the workpiece of any warm area in the burner hearth 6 obtain the heat of homogeneous in the extremely short time, guarantee the uniformity of the temperature at burner hearth 6 each position, and the temperature in the burner hearth 6 is predicted by thermocouple 2, it is needed that such temperature environment is that fragile workpiece is that solar cell substrate burns till, and can improve the yield rate of workpiece effectively and guarantee product quality.

Know by figure, the two ends of the burner hearth 6 of the intensification segment structure of the utility model solar cell substrate firing furnace are not sealed, because the utility model only is a part in the complete solar cell substrate firing furnace, the burner hearth 6 of open at both ends can ensure that the guipure 7 that is being held in the palm by the guide rail 8 that is positioned at burner hearth 6 carries that workpiece is capable to be moved.

In Fig. 2, provided complete solar cell substrate firing furnace, with position shown in scheming is example, be preheating section 16, natural cooling section 17, the utility model intensification segment structure, constant temperature zone 18, rapid chilling section 19, cooling section 20 low from left to right in regular turn, as a whole and for sleeping in being fixed on the grate 15 connected to each other.Workpiece is carried from preheating section 16 by guipure 7 and enters until drawing from rapid chilling section 20.The motion of guipure 7 is ordered about by transmission mechanism, see by figure, guipure 7 respectively through guipure roller 23, transition roller 22, tightening roller 21, drive roll 28, the guipure cleaning case 29 of guipure transmission mechanism, entrust roller 30, transition roller 31, guipure roller 32 and do motion again and again.The roll shaft axle head of drive roll 28 sets firmly sprocket wheel 27, an end of sheathed chain 26 on the sprocket wheel 27, and the in addition end of chain 26 is set on the minor sprocket 24 on the shaft of gearbox 25.

When carrying workpiece, guipure 7 enters into preheating section 16 with 2.5 meters/minute speed, after making the workpiece preheating, enter nature cooling section 17, through entering the utility model intensification section after the cooling naturally, in the section zone of heating up, with heating rate is that 78 ℃/sec heats up, and 900 ℃ high-temperature region sintering 4-5 second, be upper and lower heating tube 13 shown in the figure ', 10 ' zone sintering 4-5 enters constant temperature zone 18 after second, behind constant temperature, enter into rapid chilling section 19, enter low cooling section 20 then, through low the cooling after with workpiece on guipure 7, get from.

It is to be noted, because the intensification segment structure of complete solar cell substrate firing furnace illustrated in Figure 2 has adopted the utility model by above-mentioned disclosed improvement structure, in the process of burning till, by air inlet pipe 14 bleeds to inlet plenum 3, make gas see through under the situation of furnace lining 5 disperse equably by pore 4 in burner hearth 6, and, adopt transparent quartz tube electricity tungsten lamp to make upper and

lower heating tube

13,10, can not only make even the causing of atmosphere of burner hearth 6, and can make workpiece obtain uniform heat at short notice, resulting good product quality, the yield rate height.

Claims

1, a kind of intensification segment structure of solar cell substrate firing furnace, it comprises that tool advances, blast pipe (14), (11) body of heater (1), burner hearth (6), be located at the furnace lining (5) between burner hearth (6) and body of heater (1) inwall, be located at the heating element heater in the burner hearth (6), be characterised in that between the inwall of described furnace lining (5) and body of heater (1) and be formed with into, exhaust chamber (3), (9), and advance, exhaust chamber (3), (9) on the wall body of furnace lining (5), offer pore (4) respectively, advance, exhaust chamber (3), (9) advance with described respectively, blast pipe (14), (11) communicate; Described heating element heater comprises upper and lower heating tube (13), (10), and upper and lower heating tube (13), (10) are respectively transparent quartz tube electricity tungsten lamp.

2, the intensification segment structure of solar cell substrate firing furnace according to claim 1, the material that it is characterized in that described furnace lining (5) is an aluminosilicate fiberboard.

3, the intensification segment structure of solar cell substrate firing furnace according to claim 1 is characterized in that having extended thermocouple (2) on the described body of heater (1), and the lower end of thermocouple (2) is stretched in the burner hearth (6).