CN210237841U - Ingot furnace of movable heater - Google Patents
Ingot furnace of movable heater Download PDFInfo
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- CN210237841U CN210237841U CN201921347322.8U CN201921347322U CN210237841U CN 210237841 U CN210237841 U CN 210237841U CN 201921347322 U CN201921347322 U CN 201921347322U CN 210237841 U CN210237841 U CN 210237841U
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- heater
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- side heater
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Abstract
The utility model discloses an ingot furnace of portable heater, include the furnace body, locate in the furnace body, be used for the heating to melt the lateral part heater of silicon material in the furnace body, the lateral part heater is used for following the removal of the solid-liquid interface of silicon material when the silicon material is long brilliant and follows the direction of height of furnace body removes. The ingot furnace of the movable heater can improve the crystallization quality of the silicon rod, reduce the difference of each section of the silicon rod and improve the crystal conversion efficiency.
Description
Technical Field
The utility model relates to a solar photovoltaic field, in particular to ingot furnace of portable heater.
Background
In the existing polycrystal ingot furnace, because the space of the furnace body is limited, the positions of a heater, a crucible and the like are fixed, the environment of a growth interface is changed all the time in the crystal growth process, the environment of a solid-liquid interface can be adjusted only through the opening degree of a traditional heat insulation cage, and the difference of the growth environment of the front crystal and the growth environment of the rear crystal can be reduced as much as possible. Because later stage heat conduction is mainly concentrated on the silicon solid, the influence of the opening of the heat insulation cage and the DS block is relatively weakened, and the difference of the crystal growth environment is larger from the practical effect. The head, the middle and the tail of the silicon rod have larger difference, more gears are shown at the battery end, and the crystal conversion efficiency is lower.
Therefore, how to improve the crystallization quality of the silicon rod, reduce the difference of each section of the silicon rod, and improve the crystal conversion efficiency becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable heater's ingot furnace, this ingot furnace can change the internal thermal field of furnace, and then improve the silicon rod and become brilliant quality, reduce the difference nature of each section of silicon rod, improve crystal conversion efficiency.
In order to realize the above purpose, the utility model provides an ingot furnace of portable heater, include the furnace body, locate in the furnace body, be used for the heating to melt the lateral part heater of silicon material in the furnace body, the lateral part heater is used for following the removal of the solid-liquid interface of silicon material when the silicon material is long brilliant and follows the direction of height of furnace body removes.
Optionally, the furnace further comprises a heat insulation cage arranged between the side heater and the furnace body for heat preservation and heat insulation; the heat insulation cage is connected with a driving device for driving the heat insulation cage to lift, and the side heater is connected with the heat insulation cage through a connecting rod.
Optionally, the furnace further comprises a top heater arranged above the side heater and connected with the side heater, the side heater is connected with the top heater through an angle joint plate, and the angle joint plate is fixed on the furnace top through a suspension arm.
Optionally, the davit is seted up along the bar groove of vertical direction extension, the connecting rod passes the bar groove is connected the lateral part heater with thermal-insulated cage.
Optionally, the heat insulation cage comprises a stainless steel frame and a carbon fiber hard felt fixed in the stainless steel frame, and the connecting rod is connected with the stainless steel frame.
Optionally, the connection between the side heater and/or the heat insulation cage and the connecting rod is provided with an insulating gasket.
Optionally, the driving device comprises a chain transmission device connected with the heat insulation cage and a driving motor connected with the chain transmission device.
Optionally, the device further comprises a control device for controlling the rotation speed of the driving motor to control the ascending speed of the heat insulation cage.
Optionally, a display device for displaying the lifting height of the heat insulation cage is connected to the control device.
Compared with the prior art, the utility model provides a portable heater's ingot furnace's core improvement point lies in that the direction of height that the furnace body can be followed to the lateral part heater reciprocates. The ingot furnace of the movable heater comprises a furnace body and a side heater arranged in the furnace body, a silicon material ingot comprises melting, crystal growing, annealing and cooling, the side heater is used for melting a silicon material, and in the crystal growing process of the silicon material, along with the change of the growth height of the crystal, the silicon material solid-liquid interface is moved upwards along the height direction of the furnace body by the side heater, so that the height of the side heater is consistent with the height of the crystal, a thermal field in the furnace body is adjusted, the stability of a crystal growing environment is maintained, the crystallization quality of a silicon rod is improved, the difference of each silicon rod section is reduced, and the crystal conversion efficiency is improved.
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 schematic view of an ingot furnace of a mobile heater provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the boom of FIG. 1;
fig. 3 is a side view of the boom of fig. 2.
Wherein:
1-furnace body, 2-side heater, 3-heat insulation cage, 31-stainless steel frame, 32-carbon fiber hard felt, 4-suspension arm, 41-strip groove and 5-connecting rod.
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 utility model discloses a core lies in that the direction of height that can follow furnace body 1 through lateral part heater 2 reciprocates, can follow the long brilliant height of silicon material and its solid-liquid interface, and the thermal field in the regulation and control furnace body 1 improves long brilliant environment, and then improves into brilliant quality.
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 to 3, fig. 1 is a schematic view of an ingot furnace of a mobile heater according to an embodiment of the present invention, fig. 2 is a schematic view of a boom in fig. 1, and fig. 3 is a side view of the boom in fig. 2.
The utility model provides an ingot furnace of portable heater includes furnace body 1, is equipped with lateral part heater 2 in the furnace body 1, and furnace body 1 forms the space of heat preservation heating, and the lateral part is used for making the silicon material of placing in the crucible melt to silicon material heating. As is known well, a silicon material ingot needs to undergo four stages of melting, crystal growth, annealing and cooling, the most important is the crystal growth stage, the crystal growth of the silicon material needs to strictly control a thermal field in the furnace body 1 and control the temperature gradient in the furnace body 1, and the crystal growth environment of the silicon material is ensured.
Therefore, the utility model provides an ingot furnace of portable heater, its lateral part heater 2 can reciprocate along the direction of height of furnace body 1, through the removal of adjustment lateral part heater 2, makes the position rebound in lateral part heater 2's hot zone, follows the height and the solid-liquid interface height that the silicon material grows brilliant, maintains the stability of the brilliant environment of silicon material growth.
The crystal growth environment mainly refers to the distribution of a thermal field in the furnace body 1, namely the temperature gradient at the height of a solid-liquid interface in the crystal growth process, because the temperature gradient is a decisive factor influencing the crystal growth speed and the crystal formation quality, the height of the side heater 2 is adjusted to adapt to the height of the solid-liquid interface of the silicon material by moving, the regulation and control of the thermal field in the furnace body 1 are realized, the crystal formation quality is improved, the difference of each section of a crystal bar is reduced, and the crystal conversion efficiency is further improved.
The ingot furnace of the movable heater provided by the invention is described in more detail with reference to the accompanying drawings and specific embodiments.
There are various ways to realize the movement of the side wall heater of the ingot furnace, in a specific embodiment, the height of the side heater 2 is controlled by arranging a lifting device connected with the side heater 2 in the furnace body 1, the lifting device can adopt a lifting motor and a transmission device to be connected with the side heater 2, and when the transmission device is connected with the lifting motor and the side heater 2, the stress balance of the side heater 2 is ensured so as to keep the side heater 2 in a horizontal state when the side heater 2 is lifted, so that the hot zone of the side heater 2 is kept horizontal, and the temperature gradient of the horizontal interface at the corresponding height is convenient to adjust. The lifting device and the driving control can be set by referring to the setting of the driving structure in the elevator and other lifting mechanisms in the prior art, and the lifting device itself is not the core of the improvement of the utility model, and the description is not expanded here.
When the silicon material is in a melting stage, the side heater 2 is located at the bottom of the furnace body 1, the side heater 2 is the same as the side heater 2 in the prior art, generally has a square sleeve structure, a crucible containing the silicon material is surrounded in the center to be heated to melt the silicon material, and then the temperature of the side heater 2 needs to be controlled to enable the silicon material to grow crystals, which can be realized by adjusting heating current or voltage.
When the silicon material grows to a certain height, the solid-liquid interface of the silicon material moves upwards, the position of the side heater 2 corresponding to the solid-liquid interface is changed, the crystal growing environment at the solid-liquid interface, namely the temperature gradient, is changed, and each section of crystal bar generates certain difference. And after crystal growth is finished, annealing, taking out the crystal bar for cooling, and simultaneously lowering the side heater 2 to the bottom of the furnace body 1.
The embodiment needs to add the lifting device in the furnace body 1, so that the transformation cost is relatively high, and the arrangement of the lifting device is limited by the inner space of the furnace body 1, so that a lot of inconvenience exists.
In order to optimize the above embodiment, the utility model provides another embodiment, the ingot furnace of movable heater still includes the thermal-insulated cage 3 that sets up to be used for thermal-insulated heat preservation between lateral part heater 2 and furnace body 1, and thermal-insulated accuse sets up in furnace body 1, plays to keep warm thermal-insulated, and the fused effect of silicon material with higher speed, and thermal-insulated cage 3 still is connected with the drive arrangement who drives its lift in addition, and lateral part heater 2 then connects in thermal-insulated cage 3 through connecting rod 5, realizes following thermal-insulated cage 3's lift and goes up and down.
In order to improve the heating efficiency of the side heater 2, the existing ingot furnace is generally provided with a heat insulation cage 3 and a driving device, and the driving device controls the lifting of the heat insulation cage 3 to adjust a thermal field in the furnace body 1; the utility model discloses connect thermal-insulated cage 3 with lateral part heater 2 through connecting rod 5, need not to increase extra drive arrangement, when only needing to go up and down through the thermal-insulated cage 3 of control drive arrangement control, can accomplish the control to lateral part heater 2's height, when maintaining the long brilliant environmental stability of silicon material, reduced the transformation cost to current ingot furnace, practiced thrift the space of furnace body 1 inside.
Generally, a top heater is further arranged in the furnace body 1, the top heater is arranged above the side heaters 2, and is matched with the side heaters 2 to heat the silicon material and regulate and control a thermal field in the furnace body 1. The top heater and the side heater 2 are connected by an angle joint plate and are suspended and fixed on the furnace top through the suspension arm 4, and the suspension arm 4 plays a role in bearing on one hand and limiting the positions of the top heater and the side heater 2 on the other hand.
In the embodiment provided by the present invention, the suspension arm 4 is provided with a bar-shaped groove 41 extending along the vertical direction thereof, and the connecting rod 5 passes through the bar-shaped groove 41 to connect the side heater 2 and the heat insulation cage 3 respectively. In this way, when the thermal insulation cage 3 drives the side heater 2 to move up and down, the connecting rod 5 moves in the strip-shaped groove 41, and it should be noted that the length of the strip-shaped groove 41 meets the requirement of the maximum moving stroke of the side heater 2. And when the connecting rod 5 is positioned at the bottom of the strip-shaped groove 41, the side heater 2 is positioned at the bottom of the furnace body 1 without contacting the ground. The bar-shaped groove 41 plays a role in limiting the side heater 2, and on the other hand, can prevent the side heater 2 from falling and being damaged when the connecting rod 5 is broken or connected loosely.
The heat insulation cage 3 is made of a stainless steel frame 31 and a heat insulation material layer arranged on the stainless steel frame 31, and the heat insulation material layer can be made of carbon fiber hard felt 32 or other high-temperature-resistant heat insulation materials.
The connecting rod 5 is generally made of a high-temperature-resistant graphite rod or a carbon-carbon rod, and in addition, an insulating gasket or insulating paper is arranged at the joint of the heat insulation cage 3 and the connecting rod 5 in order to prevent the stainless steel frame 31 of the heat insulation cage 3 from conducting electricity. Of course, an insulating spacer or an insulating paper may be provided at the connection of the connecting rod 5 and the side heater 2 to achieve the same insulating effect.
In order to optimize the above embodiment, the two ends of the connecting rod 5 are detachably connected with the side heater 2 and the heat insulation cage 3, the two ends of the connecting rod 5 are respectively provided with a pin hole, the stainless steel frames 31 of the side heater 2 and the heat insulation cage 3 are provided with insertion holes for inserting the two ends of the connecting rod 5, and when the connecting rod 5 is inserted into the insertion holes, the connecting rod 5 can be detachably connected with the side heater 2 and the heat insulation cage 3 by inserting pins into the pin holes.
In addition, the both ends of connecting rod 5 still can set up the external screw thread, and the spliced eye sets up the internal thread, and the screw-thread fit through connecting rod 5 and spliced eye realizes connecting rod 5 and lateral part heater 2 and thermal-insulated cage 3 can dismantle and be connected. In this way, when it is necessary to move the thermal insulation cage 3 alone without moving the side heater 2, the connecting rod 5 is removed, and the side heater 2 is suspended and fixed by the suspension arm 4.
The driving mode of the heat insulation cage 3 can be driven by a driving motor, and the driving motor controls the lifting of the heat insulation cage 3 through a chain transmission mechanism or a link mechanism so as to drive the side heater 2 to move up and down along the height direction of the furnace body 1 through a connecting rod 5. The lifting drive of the heat insulation cage 3 can also be set by referring to the existing ingot furnace.
In order to optimize the above embodiment, the driving motor is further connected with a control device for controlling the rotating speed of the driving motor, and the control device is used for adjusting the rotating speed of the driving motor so as to control the lifting movement of the side heater 2, so as to adapt to the crystal growth speed of the silicon material. The control device can adopt an industrial computer, a single chip microcomputer or a PLC, and the rotating speed and the working state (such as starting and stopping) of the driving motor are preset according to the crystal growth speed of the silicon material.
Further, the utility model provides a portable heater's ingot furnace still includes connection control device's display device, and display device is used for showing thermal-insulated cage 3 also is lateral part heater 2's promotion height, and the accessible sets up the height that infrared detection instrument detected lateral part heater 2 and thermal-insulated cage 3 to show through display device, so that in good time control driving motor's operating condition and rotational speed. The lifting heights of the heat insulation cage 3 and the side heater 2 can be calculated by the control device according to the rotating speed of the motor, the number of rotating circles and the transmission ratio of the transmission mechanism, so that the position of the side heater 2 can be adjusted timely.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The ingot furnace of the movable 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 ingot furnace is characterized by comprising a furnace body (1) and a side heater (2) arranged in the furnace body (1) and used for heating and melting a silicon material in the furnace body (1), wherein the side heater (2) is used for moving along the height direction of the furnace body (1) along with the movement of a solid-liquid interface of the silicon material when the silicon material grows.
2. The ingot furnace of the movable heater according to claim 1, further comprising a heat insulation cage (3) provided between the side heater (2) and the furnace body (1) for heat preservation and insulation; the heat insulation cage (3) is connected with a driving device for driving the heat insulation cage (3) to lift, and the side heater (2) is connected with the heat insulation cage (3) through a connecting rod (5).
3. The ingot furnace of the mobile heater according to claim 2, further comprising a top heater connected with the side heater (2) and arranged above the side heater (2), wherein the side heater (2) is connected with the top heater through an angle joint plate, and the angle joint plate is fixed on the top of the furnace through a suspension arm (4).
4. The ingot furnace of the mobile heater according to claim 3, wherein the suspension arm (4) is provided with a strip-shaped groove (41) extending in the vertical direction, and the connecting rod (5) passes through the strip-shaped groove (41) to connect the side heater (2) and the heat insulation cage (3).
5. The ingot furnace of the movable heater according to claim 4, wherein both ends of the connecting rod (5) are detachably connected with the side heater (2) and the heat insulation cage (3), respectively.
6. The ingot furnace of the mobile heater according to claim 5, wherein the heat insulation cage (3) comprises a stainless steel frame (31) and a carbon fiber hard felt (32) fixed in the stainless steel frame (31), and the connecting rod (5) is connected with the stainless steel frame (31).
7. Ingot furnace of a mobile heater according to claim 6, characterized in that the side heater (2) and/or the thermal insulation cage (3) are provided with insulating spacers at the connection with the connecting rods (5).
8. The ingot furnace of any one of claims 2 to 7, wherein the driving device comprises a chain transmission device connected with the heat insulation cage (3) and a driving motor connected with the chain transmission device.
9. The ingot furnace of the movable heater of claim 8, further comprising a control device for controlling the rotation speed of the driving motor to realize the control of the rising speed of the heat insulation cage (3).
10. The ingot furnace of the mobile heater according to claim 9, wherein the control device is connected with a display device for displaying the lifting height of the heat insulation cage (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921347322.8U CN210237841U (en) | 2019-08-19 | 2019-08-19 | Ingot furnace of movable heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921347322.8U CN210237841U (en) | 2019-08-19 | 2019-08-19 | Ingot furnace of movable heater |
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| Publication Number | Publication Date |
|---|---|
| CN210237841U true CN210237841U (en) | 2020-04-03 |
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| CN201921347322.8U Active CN210237841U (en) | 2019-08-19 | 2019-08-19 | Ingot furnace of movable heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331441A (en) * | 2019-08-19 | 2019-10-15 | 晶科能源有限公司 | A kind of ingot furnace of movable type heater |
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2019
- 2019-08-19 CN CN201921347322.8U patent/CN210237841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331441A (en) * | 2019-08-19 | 2019-10-15 | 晶科能源有限公司 | A kind of ingot furnace of movable type heater |
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