CN208632695U - A kind of polycrystalline silicon ingot or purifying furnace - Google Patents
A kind of polycrystalline silicon ingot or purifying furnace Download PDFInfo
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- CN208632695U CN208632695U CN201821239699.7U CN201821239699U CN208632695U CN 208632695 U CN208632695 U CN 208632695U CN 201821239699 U CN201821239699 U CN 201821239699U CN 208632695 U CN208632695 U CN 208632695U
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Abstract
This is practical novel to disclose a kind of polycrystalline silicon ingot or purifying furnace, including heat-insulation cage；It is set in heat-insulation cage, the crucible being fixed on above heat-insulation cage bottom holding plates；The insulation quilt of heat-insulation cage side insulation board bottom end is set；The driving device being connected with insulation quilt；Wherein, when the side insulation board of heat-insulation cage is up-shifted to predetermined position, and insulation quilt is lifted up with side insulation board, driving device drives insulation quilt to the mobile preset distance of crucible.This it is practical it is novel in polycrystalline silicon ingot or purifying furnace, the insulation quilt of side insulation board bottom is set, can the silicon liquid effectively to top half in crucible keep the temperature, crucible bottom heat dissipation is not influenced again, it ensure that polycrystalline silicon ingot casting vertical temperature gradient is distributed, improve the quality and stability of polycrystalline silicon ingot casting.
Description
Technical field
This it is practical it is novel be related to polycrystalline cast ingot technical field, more particularly to a kind of polycrystalline silicon ingot or purifying furnace.
Background technique
Ingot furnace thermal field is the key area of polycrystalline cast ingot, and whether side thermal insulation property is directly related to can generate qualification
Silicon ingot, and then determine silicon wafer made of solar battery photoelectric conversion efficiency.
The heat-insulation system of ingot furnace thermal field is made of heat-insulation cage bottom insulation board, side insulation board and top insulation board at present, due to
Fusion process needs to provide a large amount of energy, while to guarantee that the silicon ingot seed crystal of crucible marginal portion improves the quality of silicon ingot,
It needs to guarantee vertical temperature gradient during long crystalline substance, reduces the heat dissipation of crucible top half and increase crucible bottom heat dissipation.But
During long crystalline substance, heat-insulation cage side insulation board and top insulation board are lifted up pull open gap between the insulation board of bottom simultaneously, not only can
So that crucible bottom temperature is scattered and disappeared rapidly, also results in crucible top half temperature and scatter and disappear rapidly, it is final to influence in ingot furnace
The distribution of vertical temperature gradient causes the quality and stability of polycrystalline cast ingot to decline.Therefore, melting ingot furnace thermal field
And there is crystal growing stage good adjusting heat loss to be a technical problem that technical personnel in the field need to solve at present.
Practical new content
This practical novel purpose is to provide a kind of polycrystalline silicon ingot or purifying furnace, and solving is melting ingot furnace thermal field
And crystal growing stage has the problem of good adjusting heat loss.
In order to solve the above technical problems, this practical novel provides a kind of polycrystalline silicon ingot or purifying furnace, comprising:
Heat-insulation cage；It is set in the heat-insulation cage, the crucible being fixed on above the heat-insulation cage bottom holding plates；Setting exists
The insulation quilt of the heat-insulation cage side insulation board bottom end；The driving device being connected with the insulation quilt；
Wherein, when the side insulation board of the heat-insulation cage is up-shifted to predetermined position, the insulation quilt is with the side
When insulation board is lifted up, the driving device drives the insulation quilt to the mobile preset distance of the crucible.
Wherein, the driving device includes automatic screw rod and driving motor, wherein one end of the automatic screw rod and described
Insulation quilt is fixedly connected, and the other end is connected with the driving motor, and the driving motor can drive the automatic screw rod to drive institute
It is mobile to the crucible to state insulation quilt.
Wherein, when driving device driving insulation quilt preset distance mobile to the crucible, the insulation quilt
Outer wall and the inner wall of the side insulation board be located in the same vertical plane.
Wherein, the quantity of the insulation quilt is four, and heat-insulation cage each side insulation board bottom end is respectively arranged one；
When the driving device drives mobile to the crucible preset distance of the insulation quilt, the adjacent insulation quilt it
Between it is end to end.
Wherein, the insulation quilt in the horizontal direction with a thickness of 58cm~62cm.
Wherein, the insulation quilt is 8cm~12cm in the height of vertical direction.
Wherein, being arranged side by side in the horizontal direction on each insulation quilt has 2~4 automatic screw rods.
Wherein, the insulation quilt outer wall has also been fitted and connected fixed plate；
The equal length of the fixed plate length and the insulation quilt horizontal direction in the horizontal direction, the fixed plate exist
The height of vertical direction and the height of the insulation quilt vertical direction are equal；
The insulation quilt is fixedly connected with the automatic screw rod by the fixed plate.
This practical novel provided polycrystalline silicon ingot or purifying furnace, is arranged insulation quilt in heat-insulation cage side insulation board bottom end, when
When side insulation board is lifted up, the crucible bottom inside heat-insulation cage is also just emerging between side insulation board and bottom holding plates
Gap in, and between heat-insulation cage side insulation board and crucible wall be also there are spacing, also result in crucible bottom or more
The heat of position scatters and disappears away from the spacing between side insulation board and bottom holding plates, at this time again by side insulation board bottom
Insulation quilt pushed to crucible, then insulation quilt is also located between side insulation board and crucible wall outside spacing and heat-insulation cage
The position that environment is connected also just produces a degree of obstruction to crucible top half air-flow to a certain extent, reduces
Temperature is scattered and disappeared, and interferes the heat dissipation of crucible bottom at the same time and not, and then ensure that polycrystalline silicon ingot casting vertical temperature gradient point
Cloth improves the quality and stability of polycrystalline silicon ingot casting.
Detailed description of the invention
It, below will be to embodiment for the clearer technical solution for illustrating this practical new embodiment or the prior art
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is this practical novel some embodiment, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the section signal of the heat-insulation cage closed state of polycrystalline silicon ingot or purifying furnace provided by this practical new embodiment
Figure；
Fig. 2 is the section signal that polycrystalline silicon ingot or purifying furnace heat-insulation cage provided by this practical new embodiment promotes state
Figure.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand this practical New Scheme
Mode is applied practical novel to be described in further detail this.Obviously, described embodiment is only that this is practical novel
A part of the embodiment, instead of all the embodiments.Based on this it is practical it is novel in embodiment, those of ordinary skill in the art
Every other embodiment obtained without making creative work belongs to this practical novel protected model
It encloses.
As illustrated in figs. 1 and 2, Fig. 1 is that the heat-insulation cage of polycrystalline silicon ingot or purifying furnace provided by this practical new embodiment closes
The diagrammatic cross-section of conjunction state, Fig. 2 are that polycrystalline silicon ingot or purifying furnace heat-insulation cage provided by this practical new embodiment promotes state
Diagrammatic cross-section, which may include:
Heat-insulation cage, the heat-insulation cage include top insulation board 21, side insulation board 22 and bottom holding plates 23, top heat preservation
Plate 21 and side insulation board 22 are fixed to each other as an entirety, can be lifted up relative to bottom holding plates 23.And bottom is kept the temperature
Plate 23 is fixedly arranged above crucible 1.
Further, it is additionally provided with what insulation quilt 3 was connected with the insulation quilt 3 in the bottom of each side insulation board 22
Driving device, when the side insulation board 22 of heat-insulation cage is up-shifted to predetermined position, insulation quilt 3 mentions upwards with side insulation board 22
When rising, driving device can drive insulation quilt 3 to the mobile preset distance of crucible 1.
During polycrystalline silicon ingot casting, needing to be packed into polycrystalline silicon material inside crucible 1, heat-insulation cage is internally provided with heater,
Silicon liquid is fused into polycrystalline silicon material heating, into crystal growing stage.During long brilliant, first since the silicon liquid of 1 bottom of crucible
Growth, therefore the silicon liquid of 1 bottom of crucible just needs to radiate rapidly, and the silicon liquid of a part also needs to keep melting above crucible 1
State.
Usually way is lifted up the side insulation board 22 and top insulation board of heat-insulation cage jointly, so that side at present
Spacing is pulled open between portion's insulation board 22 and bottom holding plates 23, so that 1 bottom-exposed of crucible is in heat-insulation cage external environment, so that
1 bottom heat of crucible quickly scatters and disappears.But due to not being bonded to each other between 1 side wall of crucible and side insulation board 22, two
There is also spacing between person, when side insulation board 22 is lifted up relative to crucible 1, between crucible 1 and side insulation board 22
Space air-flow can lead in crucible 1 the silicon liquid heat of a part above with the air-flow of heat-insulation cage external environment to being connected to
It is lost, influences the quality of entire polycrystalline silicon ingot casting.In order to guarantee the temperature gradient of vertical direction in heat-insulation cage, it is necessary to
When heat-insulation cage is lifted up, persistently keep heater 4 to the silicon liquid of a part heats above in crucible 1, this mode is not
The production cost for only increasing polycrystalline silicon ingot casting, also slows down 1 bottom heat radiation speed of crucible, and then extend earthenware to a certain extent
The long brilliant duration of silicon liquid, further increases the production cost of polycrystalline silicon ingot casting in crucible 1.
This it is practical it is novel in 22 bottom of side insulation board of heat-insulation cage, insulation quilt 3 is set, when side insulation quilt 3 is upward
When being promoted to certain distance, insulation quilt 3 is pushed by driving device to crucible 1, is also equivalent to for insulation quilt 3 being arranged in side
The position being connected outside space and heat-insulation cage between 1 side of portion's insulation board 22 and crucible, blocks gas to a certain extent
The circulation of stream, the silicon liquid temperature for also reducing a part above in crucible 1 is lost, and does not influence 1 bottom heat radiation of crucible.
It should be noted that because insulation quilt 3 has certain height in the vertical direction, when insulation quilt is moved to crucible 1
When dynamic, it should guarantee that insulation quilt 3 can slow down a part of silicon liquid heat loss above in crucible 1, avoid insulation quilt 3 to earthenware again
1 bottom of crucible, which is scattered and disappeared, causes to hinder, therefore, in the actual operation process, when side insulation board 22 is promoted to certain altitude, ability
It is enough to push insulation quilt 3 to crucible 1, so that 1 bottom of crucible is vertically lower than 3 bottom position of insulation quilt, to protect
Demonstrate,prove 1 bottom heat radiation of crucible.
Optionally, the height for insulation quilt 3 in vertical method can be 8cm-12cm, specifically can be 10cm.
In conclusion this it is practical it is novel provided in heat-insulation cage, can pass through control side insulation board 22 heat preservation
The position of felt 3 is controlled the temperature gradient of crystal growing stage, guarantees the vertical temperature gradient of crucible 1, largely saves
The energy consumption of heater heating, and the long brilliant duration expended can be shortened, reduce the production cost of polycrystalline silicon ingot casting；And this
It is practical it is novel provided in control polycrystalline silicon ingot casting process temperature device, have the advantages of simple structure and easy realization and facilitate operation.
May include: in this practical novel another specific embodiment based on above-mentioned any embodiment
Driving device includes automatic screw rod 5 and driving motor, wherein one end of automatic screw rod 5 and the fixed company of insulation quilt 3
It connects, the other end is connected with driving motor, and driving motor can drive automatic screw rod 5 to drive insulation quilt 3 mobile to crucible 1.
A kind of embodiment for pushing insulation quilt 3 to the mobile specific modular construction of crucible 1 of realizing is provided in the present embodiment.
By the way that automatic 5 one end of screw rod is fixedly connected with insulation quilt 3, then when the side insulation board 22 of heat-insulation cage is lifted up, it can
To be promoted 3 crucible 1 of insulation quilt by controlling driving motor, when the side wall insulation board and top insulation board that need rigid heat-insulation cage are put
Under, when so that insulation board 22 bottom end in side is concordant with bottom holding plates 23, it can drive automatic screw rod 5 will heat preservation by driving motor
Felt 3 is mobile to the direction away from 1 position of crucible, until 3 inner wall of insulation quilt and 22 inner wall of side insulation board are in vertical direction
Concordantly.
It should be noted that transmission when automatic screw rod 5 is equivalent in the present embodiment between insulation quilt 3 and driving motor
Component.This it is practical it is novel in can also be using other transmission parts, as long as finally can be realized the movement of insulation quilt i.e.
It can.
Optionally, in this practical novel another specific embodiment, can further include:
When driving device drives insulation quilt 3 to when stating the mobile preset distance of crucible 1, the outer wall and side insulation board of insulation quilt
22 inner wall is located in the same vertical plane.
It should be noted that in this practical novel each embodiment side insulation board 22, insulation quilt 3 and other
Component, it is inside and outside, be by heat-insulation cage it is inside and outside on the basis of divide, in other words side insulation board 22 and protect
Warm felt 3 is inner wall or inner surface close to the sidewall surfaces of crucible 1, and the sidewall surfaces away from crucible 1 are then outer wall or outer surface, is gone back
Have the situation sheet as such it is practical it is novel in do not enumerating explanation.
In addition, sign 3 upper space of insulation quilt can be protected when the outer wall of insulation quilt 3 is concordant with 22 inner wall of side insulation board
In temperature will not scatter and disappear between insulation quilt 3 and side insulation board 22, improve insulation quilt 3 protecting effect.
Further, the thickness of insulation quilt 3 in the horizontal direction, that is to say the thickness between 3 inner and outer wall of insulation quilt
The insulation quilt 3 of 60cm thickness specifically can be used for 58cm-62cm.
It should be noted that under normal conditions, the spacing between 1 side wall of side insulation board 22 and crucible is slightly greater than 62cm
, because 3 outer wall of insulation quilt is concordant in vertical direction with 22 inner wall of side insulation board, and insulation quilt 3 is with a thickness of 60cm or so, that
Just there is narrow gap, so that insulation quilt 3 is unlikely to be fitted in 1 side wall of crucible between 1 side wall of insulation quilt 3 and crucible.
And during long brilliant, the side insulation board 22 of heat-insulation cage is being promoted to and can promote insulation quilt 3 to crucible 1
After height, it is also necessary to which slow and lasting is lifted up, and when insulation quilt 3 is lifted up with side insulation board 22, insulation quilt 3 is not
Friction is generated between meeting and crucible 1, and can be guaranteed that the temperature of 3 or more position of insulation quilt is scattered and disappeared to the full extent and significantly be slowed down.
Optionally, in this practical novel another specific embodiment, can further include:
It is end to end between adjacent insulation quilt when driving device driving insulation quilt 3 preset distance mobile to crucible 1.
It should be noted that heat-insulation cage used in routine, there are four side wall insulation board, one, besieged cities to have square for tool
The heat-insulation cage in section will make the temperature between 1 side wall of each side wall insulation board and crucible not easy to lose, it is necessary to will be each
22 one insulation quilt 3 of lower section setting of side insulation board.
When insulation quilt 3 is advanced into close to crucible 1, each adjacent insulation quilt 3 joins end to end, and effectively temperature can be avoided from guarantor
Gap between warm felt 3 is scattered and disappeared, and the heat insulation effect of insulation quilt 3 is further increased.
Based on above-mentioned any embodiment, it is contemplated that there are certain flexibilities for the quality of insulation quilt 3 itself, pass through automatic silk
When bar 5 pushes insulation quilt 3, it is understood that there may be insulation quilt 3 is whole to be presented arc, and 3 middle position of insulation quilt has arrived at predetermined position,
And 3 both ends of insulation quilt can not reach predetermined position, adjust entire insulation quilt 3 to the circumferential temperature of crucible 1 uneven,
Influence polycrystalline silicon ingot casting effect.
Therefore, this it is practical it is novel in two specific embodiments are provided to this problem, to solve the problems, such as this.Specifically such as
Under:
In a kind of this practical novel specific embodiment, may include:
Being arranged side by side in the horizontal direction on each insulation quilt 3 has 2~4 automatic screw rods 5, same by multiple automatic screw rods 5
When the motive force that applies, ensure that insulation quilt 3, whole that linear type is presented is close to crucible 1.
In this practical novel another specific embodiment, may include:
3 outer wall of insulation quilt has also been fitted and connected fixed plate；
The equal length of 3 horizontal direction of fixed plate length in the horizontal direction and insulation quilt, fixed plate is in vertical direction
Height is equal with the height of 3 vertical direction of insulation quilt；
Insulation quilt 3 is fixedly connected with automatic screw rod 5 by fixed plate.
Because insulation quilt 3 is fixed in fixed plate, fixed plate has stronger rigid for insulation quilt 3
Property, it is ensured that insulation quilt 3 is in " one " shape.It only needs to be arranged an automatic screw rod 5 at this time, that is, can guarantee that insulation quilt 3 is straight
To crucible 1 promote.
It should be noted that for the whole planarization of better positive insulation quilt 3 in the present embodiment, thus using and heat preservation
3 height of felt and the equal fixed plate of width, but this be not this it is practical it is novel in displacement selection, the size of fixed plate can also
To be less than insulation quilt 3, it might even be possible to using rod-shaped fixed frame etc., as long as guaranteeing that insulation quilt 3 is in straightened condition.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Claims (8)
1. a kind of polycrystalline silicon ingot or purifying furnace, which is characterized in that including heat-insulation cage；Be set in the heat-insulation cage, be fixed on it is described every
Crucible above hot cage bottom holding plates；The insulation quilt of the heat-insulation cage side insulation board bottom end is set；With the insulation quilt
The driving device being connected；
Wherein, when the side insulation board of the heat-insulation cage is up-shifted to predetermined position, the insulation quilt is kept the temperature with the side
When plate is lifted up, the driving device drives the insulation quilt to the mobile preset distance of the crucible.
2. polycrystalline silicon ingot or purifying furnace as described in claim 1, which is characterized in that the driving device includes automatic screw rod and driving
Motor, wherein one end of the automatic screw rod is fixedly connected with the insulation quilt, the other end is connected with the driving motor, described
Driving motor can drive the automatic screw rod to drive the insulation quilt mobile to the crucible.
3. polycrystalline silicon ingot or purifying furnace as claimed in claim 2, which is characterized in that when the driving device drive the insulation quilt to
When the crucible movement preset distance, the inner wall of the outer wall of the insulation quilt and the side insulation board is located at same perpendicular
It is interior.
4. polycrystalline silicon ingot or purifying furnace as claimed in claim 3, which is characterized in that the quantity of the insulation quilt be four, it is described every
Hot cage each side insulation board bottom end is respectively arranged one；
It is first between the adjacent insulation quilt when driving device driving insulation quilt preset distance mobile to the crucible
Tail connects.
5. polycrystalline silicon ingot or purifying furnace as claimed in claim 4, which is characterized in that the insulation quilt in the horizontal direction with a thickness of
58cm~62cm.
6. polycrystalline silicon ingot or purifying furnace as described in claim 1, which is characterized in that the insulation quilt is in the height of vertical direction
8cm~12cm.
7. such as polycrystalline silicon ingot or purifying furnace as claimed in any one of claims 1 to 6, which is characterized in that along water on each insulation quilt
Square to be arranged side by side have 2~4 automatic screw rods.
8. such as polycrystalline silicon ingot or purifying furnace as claimed in any one of claims 1 to 6, which is characterized in that the insulation quilt outer wall is also bonded
It is connected with fixed plate；
The equal length of the fixed plate length and the insulation quilt horizontal direction in the horizontal direction, the fixed plate is vertical
The height in direction and the height of the insulation quilt vertical direction are equal；
The insulation quilt is fixedly connected with the automatic screw rod by the fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239699.7U CN208632695U (en) | 2018-08-02 | 2018-08-02 | A kind of polycrystalline silicon ingot or purifying furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239699.7U CN208632695U (en) | 2018-08-02 | 2018-08-02 | A kind of polycrystalline silicon ingot or purifying furnace |
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| Publication Number | Publication Date |
|---|---|
| CN208632695U true CN208632695U (en) | 2019-03-22 |
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ID=65740479
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821239699.7U Active CN208632695U (en) | 2018-08-02 | 2018-08-02 | A kind of polycrystalline silicon ingot or purifying furnace |
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| Country | Link |
|---|---|
| CN (1) | CN208632695U (en) |
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2018
- 2018-08-02 CN CN201821239699.7U patent/CN208632695U/en active Active
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