CN210134185U - Polycrystal ingot furnace heater - Google Patents
Polycrystal ingot furnace heater Download PDFInfo
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- CN210134185U CN210134185U CN201921127300.0U CN201921127300U CN210134185U CN 210134185 U CN210134185 U CN 210134185U CN 201921127300 U CN201921127300 U CN 201921127300U CN 210134185 U CN210134185 U CN 210134185U
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Abstract
The utility model discloses a polycrystal ingot furnace heater, including circular shape top heater and with the cooperation of top heater is connected and is used for supporting the cylindric lateral part heater of top heater is still including locating top heater, the electrode that is used for the connection power. The heater of the polycrystalline ingot furnace is adaptive to the shape of the furnace shell, and the volume and the internal space of the heater of the polycrystalline ingot furnace are improved, so that the single feeding amount and the yield of silicon ingots are increased, and the unit energy consumption and the cost for producing the silicon ingots are reduced.
Description
Technical Field
The utility model relates to a solar photovoltaic technical field, in particular to polycrystal ingot furnace heater.
Background
The polycrystalline ingot furnace heater is a device which is assembled in a polycrystalline ingot furnace and used for increasing the temperature in the furnace. In the solar photovoltaic industry, how to increase the feeding amount in the ingot casting technology is always a technical difficulty, but the heater structure of the polycrystalline ingot casting furnace used in the prior art is unreasonable in arrangement, occupies the effective use space of a furnace platform, and reduces the effective space for casting raw materials, so that the feeding amount cannot be increased. In the polycrystalline ingot casting, the larger feeding amount means lower unit cost, the existing four-top side heater is mostly in a cubic structure, and the outer furnace shell is in a circular structure, so that the heater occupies a large space of the furnace platform, the single feeding amount and the yield of silicon ingots of the polycrystalline ingot casting furnace are lower, and the unit energy consumption and the cost for producing the silicon ingots are higher.
Therefore, how to increase the charge amount of the polycrystalline ingot furnace and reduce the unit cost of the unit silicon ingot and the unit crystal bar becomes a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a polycrystal ingot furnace heater, this heater can improve polycrystal ingot furnace's input, increases the single output of silicon bulk and crystal bar, reduces the unit manufacturing cost and the energy consumption of production silicon bulk and crystal bar.
In order to achieve the above object, the present invention provides a heater for a polycrystal ingot furnace, which comprises a circular top heater and a cylindrical side heater, wherein the top heater is matched with and connected with the circular top heater, and the cylindrical side heater is used for supporting the top heater, and the heater further comprises an electrode arranged on the top heater and used for connecting a power supply.
Optionally, the heating device further comprises a connecting plate arranged between the top heater and the side heater and used for connecting the top heater and the side heater.
Optionally, fixing holes are formed in the circumferential corresponding positions of the top heater and the side heater;
and matching holes matched with the fixing holes are formed in two ends of the connecting plate, and the connecting plate is connected with the top heater and the side heater through the fixing holes, the matching holes and fasteners.
Optionally, the connecting plate is an angle joint plate, and the mating holes are opened at two sides of the angle joint plate perpendicular to each other.
Optionally, the circumference of top heater is equipped with and is used for holding the spacing groove of one side of connecting plate, top heater the fixed orifices set up in the spacing inslot just the spacing groove with the connecting plate one-to-one sets up.
Optionally, the limiting grooves are uniformly arranged along the circumferential direction of the top heater.
Optionally, the top heater includes a plurality of annular heating portions arranged at intervals and an annular connecting portion connecting and fixing the annular heating portions.
Optionally, the widths of the plurality of circular heating portions are equal, and the distance between any two adjacent circular heating portions is the same.
Optionally, the side heater comprises a plurality of serpentine heating sections, and the serpentine heating sections are connected end to form a cylinder.
Optionally, the cross sections of the serpentine heating section and the circular heating section are both rectangular.
Compared with the prior art, the utility model provides a polycrystal ingot furnace heater includes the top heater and is connected and to its supporting role's of top heater lateral part heater, top heater are equipped with the electrode of connecting. When the electrodes are communicated with a power supply, the top heater and the side heater are matched with each other to form a space for placing the crucible and putting in raw materials, and the crucible and the raw materials in the crucible are heated by the top heater and the side heater, so that the raw materials gradually undergo four processes of melting, crystal growth, annealing and cooling, and the production of silicon ingots and crystal bars is completed.
Particularly, the top heater is circular, the side heater is cylindrical and matched with the top heater, the top heater and the side heater are matched with each other to form the shape of an inverted cylindrical shell, the shape of the polycrystalline ingot furnace heater is the same as that of the furnace shell through the arrangement, the top heater and the side heater are matched and attached, compared with a heater which is arranged in the furnace shell and has a cubic structure and is internally tangent to the furnace shell to the maximum extent, the internal space of the polycrystalline ingot furnace heater is obviously increased, more crucibles can be arranged in the polycrystalline ingot furnace heater and more raw materials can be put in the crucibles, not only square crucibles can be placed, but also circular crucibles can be arranged, and calculation and practice show that in the furnace shell with the same specification, the single yield of the circular polycrystalline ingot furnace heater is increased from 36 blocks to 57 blocks compared with the ingot furnace heater with the traditional cubic structure, the yield and the production efficiency of the silicon ingot are obviously improved, the unit energy consumption and the cost for producing the silicon ingot are reduced, and the trend of energy conservation, emission reduction and high-efficiency production is complied with.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a structural diagram of a heater of a polycrystalline ingot furnace provided by an embodiment of the invention;
FIG. 2 is a perspective view of the open side of a crucible in the heater of the polycrystal ingot furnace of FIG. 1.
Wherein:
1-top heater, 11-limiting groove, 12-circular heating part, 13-circular connecting part, 14-electrode, 2-side heater, 21-snake heating section, 3-connecting plate and 4-crucible.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The heater of the polycrystalline ingot furnace is equipment which is assembled in the polycrystalline ingot furnace and used for increasing the temperature in the furnace. The temperature of the polycrystal ingot is high, the highest temperature is close to 2000 ℃, a heater of the polycrystal ingot furnace is usually made of graphite materials and is provided with an electrode 14, the electrode 14 is connected with a power supply to heat the crucible 4 and the raw materials in the crucible 4, so that the raw materials gradually undergo four processes of melting, crystal growth, annealing or cooling, and the production of silicon ingots and crystal bars is completed.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a structural diagram of a heater of a polycrystalline ingot furnace according to an embodiment of the present invention, and fig. 2 is a projection view of an opening of a crucible in the heater of the polycrystalline ingot furnace in fig. 1.
The utility model provides a heater of a polycrystal ingot furnace, which comprises a top heater 1 and a side heater 2, wherein the top heater 1 and the side heater 2 are both made of graphite materials generally; in addition, the top heater 1 is also provided with an electrode 14, and a power supply is connected to realize the heating of the top heater 1 and the side heater 2. The top heater 1 is circular, and the side heater 2 is cylindrical and matched with the top heater 1, so that the top heater 1 is matched and connected and the top heater 1 is supported. In general, the top heater 1 may be provided with a protrusion extending outward along a circular edge, and fixed to the side heater 2 by overlapping the protrusion. It should be noted that the above-mentioned connection not only refers to a contact on the structure, but also includes an electrical connection for realizing electrical conduction.
The top heater 1 and the side heater 2 are matched with each other to form a polycrystalline ingot furnace heater which is integrally in an inverted cylindrical shell shape, so that the shape of the polycrystalline ingot furnace heater is attached to the shape of a furnace shell, and the polycrystalline ingot furnace heater can be arranged in a manner of being attached to the furnace shell instead of being only internally attached to the furnace shell as the traditional cubic heater is; because the existing furnace shell is of a circular structure, in the furnace shell with the same size, the specification and the size of the cylindrical polycrystalline ingot furnace heater are increased compared with those of a traditional cubic heater, and the internal space of the polycrystalline ingot furnace heater is also obviously increased, so that more crucibles 4 can be arranged in the polycrystalline ingot furnace heater and more raw materials can be put in the polycrystalline ingot furnace heater. Calculation and practice show that compared with the traditional cubic heater, the cylindrical polycrystalline ingot furnace heater has the advantages that the single-time silicon ingot yield of the polycrystalline ingot furnace is increased from 36 to 57, the production efficiency is obviously improved, the unit production cost and the production energy consumption are reduced, the requirements of energy conservation and emission reduction are met, and meanwhile, the cylindrical polycrystalline ingot furnace heater also brings rich economic benefits for enterprises.
The utility model provides a polycrystal ingot furnace heater is described in more detail below with specific embodiments.
In one embodiment of the present invention, the heater of the polycrystalline ingot furnace mainly comprises two heating portions and a power supply for connecting the power supply to the two heating portions. The two heating parts specifically comprise a circular top heater 1 and a cylindrical side heater 2 supporting the top heater 1; the side heater 2 is matched and connected with the top heater 1, wherein the connection does not refer to structural contact support, and particularly refers to the realization of conductive electrical connection; the electrode 14 is usually provided at the top heater 1 and, due to the connection of the top heater 1 and the side heater 2, it is achieved that power is supplied to both the top heater 1 and the side heater 2. Certainly, the position of the electrode 14 can be adjusted according to actual needs, because the temperature in the hearth of the polycrystalline ingot furnace is high and can be up to 2000 ℃, the common metal resistance can hardly meet the heating requirement, and the top heater 1 and the side heater 2 are usually made of graphite materials.
The structure of the side heater 2 for connecting and supporting the top heater 1 can be various, for example, the top heater 1 is provided with a lapping claw extending outwards along the radial direction thereof in the circumferential direction, and the side heater 2 is provided with a lapping part for lapping the lapping claw; the lap joint of the top heating gas and the side heater 2 is realized through the lap joint claw, and the electric connection is realized at the same time.
In another embodiment provided by the present invention, the heater of the polycrystalline ingot furnace further comprises a connecting plate 3 connecting the top heater 1 and the side heater 2, the top heater 1 and the side heater 2 are connected and fixed in relative position by the connecting plate 3, and the connecting plate 3 also has an electric conduction function, so that the material of the connecting plate 3 can be the same as the material of the top heater 1 and the material of the side heater 2, which is helpful for reducing contact resistance; for example, the two ends of the connection plate 3 may be respectively inserted into the corresponding positions of the top heater 1 and the side heater 2.
In order to improve the electrical conductivity of the fixing effect of the top heater 1 and the side heater 2, the connection plate 3 connects the top heater 1 and the side heater 2 by a fastener such as a screw. The fixed orifices of being connected with connecting plate 3 are seted up to the circumferencial direction of top heater 1, set up the fixed orifices of being connected with connecting plate 3 on the position that lateral part heater 2 corresponds with top heater 1, and the both ends of connecting plate 3 are seted up respectively with fixed orifices complex mating holes to fastener such as connecting plate 3 passes through fixed orifices, mating holes and screws and connects top heater 1 and lateral part heater 2.
The connecting plates 3 may be corner plates, which means the connecting plates 3 having two sides perpendicular to each other. Thus, the fixing hole of the top heater 1 may be opened on the upper surface or the lower surface of the top heater 1, and the fixing hole of the side heater 2 may be opened on the side surface of the side heater 2 at a position corresponding to the top heater 1.
In order to optimize the above embodiment, the top heater 1 is further provided with a limiting groove 11 in the circumferential direction, the fixing hole of the top heater 1 is formed in the limiting groove 11, one end of the connecting plate 3 or the corner plate is arranged in the limiting groove 11 to be connected and fixed with the top heater 1, the limiting groove 11 and the connecting plate 3 are in one-to-one correspondence in number, and in order to improve the uniformity of stress, the limiting groove 11 and the connecting plate 3 are uniformly arranged in the circumferential direction of the top heater 1. The arrangement of the limiting groove 11 can effectively prevent the top heater 1 and the side heater 2 from moving in the circumferential direction, so that the connection strength is ensured, and the resistance of the connection part on the surface is changed due to the circumferential relative movement of the top heater 1 and the side heater 2.
The top heater 1 described in the above embodiment includes a plurality of ring heating portions 12 arranged alternately, that is, a plurality of graphite rings, and also includes ring connecting portions 13 for connecting and fixing the plurality of ring heating portions 12; generally, the ring connection 13 is disposed in a radial direction of the top heater 1. The plurality of annular heating portions 12 are arranged at intervals so as to provide an inert gas environment for the raw material arranged in the heater of the polycrystalline ingot furnace.
The side heater 2 comprises a plurality of snake-shaped heating sections 21 which are sequentially connected in series end to end, and the snake-shaped heating sections 21 are connected end to enclose into a cylinder shape to form a support for the top heater 1. The serpentine heating section 21 is a heater structure which is bent in a serpentine shape and flows out of a space enough to provide inert gas for the interior of the heater of the polycrystal ingot furnace.
In order to improve the heating uniformity of the heater of the polycrystalline ingot furnace, the widths of the plurality of circular heating parts 12 are the same, and the intervals between any two adjacent circular heating parts 12 are the same. The snake-shaped heating section 21 and the circular ring heating part 12 are both flat, and the cross sections of the snake-shaped heating section and the circular ring heating part are rectangular or round-corner rectangular.
The polycrystalline ingot furnace heater provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The heater of the polycrystalline ingot furnace is characterized by comprising a circular top heater (1), a cylindrical side heater (2) which is matched and connected with the top heater (1) and used for supporting the top heater (1), and an electrode (14) which is arranged on the top heater (1) and used for being connected with a power supply.
2. The polycrystal ingot furnace heater of claim 1, further comprising a connecting plate (3) provided between the top heater (1) and the side heater (2) for connecting the top heater (1) and the side heater (2).
3. The heater of the polycrystalline ingot furnace according to claim 2, wherein fixing holes are formed in the circumferential corresponding positions of the top heater (1) and the side heater (2);
and matching holes matched with the fixing holes are formed in two ends of the connecting plate (3), and the connecting plate (3) is connected with the top heater (1) and the side heater (2) through the fixing holes, the matching holes and fasteners.
4. The heater of claim 3, wherein the connecting plate (3) is an angle plate, and the matching holes are arranged on two sides of the angle plate, which are perpendicular to each other.
5. The heater of the polycrystal ingot furnace according to claim 4, wherein the top heater (1) is circumferentially provided with a limit groove (11) for accommodating one side of the connecting plate (3), the fixing hole of the top heater (1) is opened in the limit groove (11) and the limit grooves (11) are arranged in one-to-one correspondence with the connecting plate (3).
6. The polycrystalline ingot furnace heater according to claim 5, wherein the limiting grooves (11) are uniformly arranged along the circumferential direction of the top heater (1).
7. The polycrystal ingot furnace heater according to claim 6, wherein the top heater (1) comprises a plurality of ring heating parts (12) arranged alternately and ring connecting parts (13) connecting and fixing the ring heating parts (12).
8. The polycrystal ingot furnace heater of claim 7, wherein a plurality of the ring heating parts (12) are equal in width and a pitch between any adjacent two of the ring heating parts (12) is the same.
9. The polycrystal ingot furnace heater of claim 8, wherein the side heater (2) comprises a plurality of serpentine heating sections (21), and the plurality of serpentine heating sections (21) are connected end to form a cylindrical shape.
10. The polycrystal ingot furnace heater of claim 9, wherein the cross section of the serpentine heating section (21) and the ring heating section (12) are rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921127300.0U CN210134185U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot furnace heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921127300.0U CN210134185U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot furnace heater |
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| CN210134185U true CN210134185U (en) | 2020-03-10 |
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| CN201921127300.0U Active CN210134185U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot furnace heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114672872A (en) * | 2022-03-21 | 2022-06-28 | 西安交通大学 | Symmetry heater structure of single crystal casting furnace and single crystal casting furnace |
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- 2019-07-17 CN CN201921127300.0U patent/CN210134185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114672872A (en) * | 2022-03-21 | 2022-06-28 | 西安交通大学 | Symmetry heater structure of single crystal casting furnace and single crystal casting furnace |
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