CN202954140U - Radiating base plate of ingot casting polycrystalline furnace and ingot casting polycrystalline furnace comprising radiating base plate - Google Patents
Radiating base plate of ingot casting polycrystalline furnace and ingot casting polycrystalline furnace comprising radiating base plate Download PDFInfo
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- CN202954140U CN202954140U CN 201220658795 CN201220658795U CN202954140U CN 202954140 U CN202954140 U CN 202954140U CN 201220658795 CN201220658795 CN 201220658795 CN 201220658795 U CN201220658795 U CN 201220658795U CN 202954140 U CN202954140 U CN 202954140U
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- base plate
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- bottom plate
- radiating bottom
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Abstract
The utility model provides a radiating base plate of an ingot casting polycrystalline furnace and the ingot casting polycrystalline furnace comprising the radiating base plate. The radiating base plate comprises a base plate body (10), wherein a first porose area (11) and a second porose area (12) are arranged on the base plate body (10); the first porose area (12) is arranged at the outer side of the second porose area (12) in an encircling manner; a plurality of first through holes (111) are formed inside the first porose area (11); a plurality of second through holes (121) are formed inside the second porose area (12); and the sum of overflow areas of a plurality of first through holes (111) is different from that of a plurality of second through holes (12). The temperature distribution of the contact surface of the radiating base plate and a quartz crucible can be more even when the radiation base plate disclosed by the utility model radiates. Thus, crystal nucleus formed by liquid silicon is more even.
Description
Technical field
The utility model relates to the technical field of ingot casting polycrystalline thermal field heat abstractor, in particular to a kind of radiating bottom plate of ingot casting polycrystalline furnace and have its ingot casting polycrystalline furnace.
Background technology
As shown in Figure 1, radiating bottom plate 10 of the prior art ' be solid rectangular slab, be used for supporting the quartz crucible 20 that is contained with liquid silicon ' and be used for this quartz crucible 20 ' heat radiation.
The heating quartz crucible 20 ' mode mainly contain two kinds, a kind of is by the surrounding radiation heating, another kind is to pass through bottom-heated.Above-mentioned two kinds of type of heating all make quartz crucible 20 ' be heated inhomogeneous, the thermal conductivity everywhere of radiating bottom plate is identical, radiating rate everywhere is essentially identical, therefore after radiating bottom plate 10 ' heat radiation, quartz crucible 20 ' bottom temp distribute still inhomogeneous, cause like this quartz crucible 20 ' the silicon crystal grain that forms of the horizontal temperature gradient of bottom little zone large, the silicon crystal grain that the zone that horizontal temperature gradient is large forms is little.The uniform crystal particles degree differs greatly and can directly cause crystal quality relatively poor, and then causes the turnover ratio of photovoltaic cell low.
The utility model content
The utility model makes the radiating bottom plate of the ingot casting polycrystalline furnace that the quartz crucible bottom temp is more evenly distributed and has its ingot casting polycrystalline furnace when being intended to also provide a kind of the heat radiation.
To achieve these goals, according to an aspect of the present utility model, a kind of radiating bottom plate of ingot casting polycrystalline furnace is provided, comprise: the base plate body, the base plate body is provided with the first porose area and the second porose area, and the first porose area is provided with a plurality of the first through holes around the outside that is arranged on the second porose area in the first porose area, be provided with a plurality of the second through holes in the second porose area, the open area sum of a plurality of the first through holes is different from the open area sum of a plurality of the second through holes.
Further, the distance between the hole heart of adjacent two the first through holes equals the distance between the hole heart of adjacent two the second through holes, and the aperture of the first through hole is less than the aperture of the second through hole.
Further, the aperture of the first through hole and the second through hole is all equal, and the distance between the hole heart of adjacent two the first through holes is greater than the distance between the hole heart of adjacent two the second through holes.
Further, be filled with thermal conductivity less than the thermally conductive material of the thermal conductivity of base plate body in the first through hole and/or in the second through hole.
Further, the open area sum of the open area of a plurality of the first through holes and a plurality of the second through holes is less than 70% of the cross-sectional area of base plate body.
Further, the base plate body is rectangular plate or disc-shaped plate.
Further, the equal rounded or Polygons of the flow-passing surface of the first through hole and the second through hole.
Further, the base plate body is graphite cake.
Further, the thickness of base plate body is within the scope of 25mm to 35mm.
According on the other hand of the present utility model, a kind of ingot casting polycrystalline furnace is provided, comprising: crucible and support are arranged on the radiating bottom plate of crucible bottom, and radiating bottom plate is above-mentioned radiating bottom plate.
Use the technical solution of the utility model, because thermal conductivity is relevant with open area, that is to say, open area is larger, and thermal conductivity is lower.Like this, the thermal conductivity of the first porose area position of base plate body is different from the thermal conductivity of the second porose area position of base plate body.The position that the thermal conductivity of base plate body is high is corresponding to the high zone of the temperature of quartz crucible, and the position that the thermal conductivity of base plate body is low is corresponding to the low zone of the temperature of quartz crucible.Like this, make the radiating rate in the radiating rate in the temperature of the quartz crucible high zone zone low faster than the temperature of quartz crucible, thereby the temperature distribution of surface when heat radiation that the base plate body contacts with quartz crucible reached unanimity gradually.Like this, the temperature of quartz crucible bottom reaches unanimity, and makes the crystal grain of formation more even, and then has guaranteed the quality of crystal grain.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of ingot casting polycrystalline furnace in prior art;
The master that Fig. 2 shows according to the embodiment one of the radiating bottom plate of ingot casting polycrystalline furnace of the present utility model looks schematic diagram;
Fig. 3 shows the side-looking structural representation of the radiating bottom plate of ingot casting polycrystalline furnace in Fig. 2.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 2, the radiating bottom plate of the ingot casting polycrystalline furnace of embodiment one comprises base plate body 10, this base plate body 10 is provided with the first porose area 11 and the second porose area 12, the first porose area 11 is around the outside that is arranged on the second porose area 12, be provided with a plurality of the first through holes 111 in the first porose area 11, be provided with a plurality of the second through holes 121 in the second porose area 12, the open area sum of a plurality of the first through holes 111 is less than the open area sum of a plurality of the second through holes 121.
The radiating bottom plate of embodiment one be applicable to the ingot casting polycrystalline furnace that quartz crucible is adopted surrounding radiation heating mode, the surrounding temperature on base plate body 10 and quartz crucible contacted surface is higher than core temperature, so, the open area sum of a plurality of the first through holes 111 is less than the open area sum of a plurality of the second through holes 121, on base plate body 10, the thermal conductivity of the first porose area 11 is less than the thermal conductivity of the second porose area 12, thermal conductivity is lower, and radiating rate is slower.The radiating rate of the peripheral regions of quartz crucible is faster than the radiating rate of the central zone of quartz crucible, like this, the temperature distribution of surface when heat radiation that base plate body 10 contacts with quartz crucible reached unanimity, and then the temperature bottom quartz crucible is reached unanimity, therefore make the crystal grain of formation more even, and then guaranteed the quality of crystal grain.
Preferably, the first porose area 11 on base plate body 10 and the second porose area 12 can be a plurality of, between the first porose area 11 and the second porose area 12, one or more transition porose areas can also be set.Such as, be provided with a zone of transition, be provided with a plurality of third through-holes in the transition porose area, the open area sum of a plurality of third through-holes is between the open area sum of the open area sum of a plurality of the first through holes 111 and a plurality of the second through holes 121.Like this, when dispel the heat in the bottom of 10 pairs of quartz crucibles of base plate body, the temperature distribution of the bottom of quartz crucible is more even.
As shown in Figure 2, in embodiment one, the distance between the hole heart of adjacent two the first through holes 111 equals the distance between the hole heart of adjacent two the second through holes 121, and the aperture of the first through hole 111 is less than the aperture of the second through hole 121.Therefore, the open area sum of each first through hole 111 in the first porose area 11 is less than the open area sum of each second through hole 121 in the second porose area 12.
Be according to the radiating bottom plate (not shown) of embodiment two of the present utility model and the difference of embodiment one, the aperture of the first through hole 111 and the second through hole 121 is all equal, and the distance between the hole heart of adjacent two the first through holes 111 is greater than the distance between the hole heart of adjacent two the second through holes 121.Therefore, the open area sum of each first through hole 111 in the first porose area 11 is less than the open area sum of each second through hole 121 in the second porose area 12.As feasible embodiment, also the embodiment of embodiment one and embodiment two can be able to be cooperatively interacted, as long as satisfy the open area sum of a plurality of the first through holes 111 less than the open area sum of a plurality of the second through holes 121.
Preferably, for the temperature of quartz crucible when silicon liquid nucleation bottom more even, can be in the first through hole 111 and the interior thermal conductivity that all is filled with of the second through hole 121 less than the thermally conductive material of the thermal conductivity of base plate body 10, such as the lagging material of graphite soft felt or carbon fiber class etc.Certainly, also can only fill in the first through hole 111 or in the second through hole 121 as required.
As shown in Figure 2, in the above-described embodiments, in a plurality of through holes 11, the open area sum of each through hole 11 less than 70% of the cross-sectional area of base plate body 10, like this, has guaranteed the intensity of base plate body 10.
As shown in Figure 2, base plate body 10 is disc-shaped plate, and in unshowned in the drawings embodiment, base plate body 10 can be also rectangular plate.
As shown in Figure 2, the flow-passing surface of the first through hole 111 and the second through hole 121 is all rounded, and above-mentioned through hole is easily processed.In unshowned in the drawings embodiment, the flow-passing surface of the first through hole 111 and the second through hole 121 also can be rectangular.
Comprise the base plate body according to the radiating bottom plate (not shown) of embodiment three of the present utility model, this base plate body is provided with the first porose area and the second porose area, the first porose area is around the outside that is arranged on the second porose area, be provided with a plurality of the first through holes in the first porose area, be provided with a plurality of the second through holes in the second porose area, the open area sum of a plurality of the first through holes is greater than the open area sum of a plurality of the second through holes.The principle of work of the present embodiment is similar with embodiment two to embodiment one, and the radiating bottom plate of the present embodiment is applicable to the mode of bottom-heated.Make the open area sum of a plurality of the first through holes greater than the embodiment existing introduction in the above description of the open area sum of a plurality of the second through holes, do not repeat them here.
The utility model also provides a kind of ingot casting polycrystalline furnace, comprises crucible and supports the radiating bottom plate that is arranged on described crucible bottom according to the embodiment of ingot casting polycrystalline furnace of the present utility model, and radiating bottom plate is above-mentioned radiating bottom plate.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. the radiating bottom plate of an ingot casting polycrystalline furnace, comprise: base plate body (10), it is characterized in that, described base plate body (10) is provided with the first porose area (11) and the second porose area (12), described the first porose area (11) is around the outside that is arranged on described the second porose area (12), be provided with a plurality of the first through holes (111) in described the first porose area (11), be provided with a plurality of the second through holes (121) in described the second porose area (12), the open area sum of a plurality of described the first through holes (111) is different from the open area sum of a plurality of described the second through holes (121).
2. radiating bottom plate according to claim 1, it is characterized in that, distance between the hole heart of adjacent two described the first through holes (111) equals the distance between the hole heart of adjacent two described the second through holes (121), and the aperture of described the first through hole (111) is less than the aperture of described the second through hole (121).
3. radiating bottom plate according to claim 1, it is characterized in that, the aperture of described the first through hole (111) and described the second through hole (121) is all equal, and the distance between the hole heart of adjacent two described the first through holes (111) is greater than the distance between the hole heart of adjacent two described the second through holes (121).
4. radiating bottom plate according to claim 1, is characterized in that, is filled with thermal conductivity less than the thermally conductive material of the thermal conductivity of described base plate body (10) in described the first through hole (111) and/or in described the second through hole (121).
5. radiating bottom plate according to claim 1, is characterized in that, the open area sum of the open area of a plurality of described the first through holes (111) and a plurality of described the second through holes (121) is less than 70% of the cross-sectional area of described base plate body (10).
6. radiating bottom plate according to claim 1, is characterized in that, described base plate body (10) is rectangular plate or disc-shaped plate.
7. radiating bottom plate according to claim 1, is characterized in that, the flow-passing surface of described the first through hole (111) and the second through hole (121) is rounded or Polygons all.
8. radiating bottom plate according to claim 1, is characterized in that, described base plate body (10) is graphite cake.
9. radiating bottom plate according to claim 1, is characterized in that, the thickness of described base plate body (10) is within the scope of 25mm to 35mm.
10. ingot casting polycrystalline furnace comprises: crucible and support the radiating bottom plate that is arranged on described crucible bottom, it is characterized in that, and described radiating bottom plate is the described radiating bottom plate of any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658795 CN202954140U (en) | 2012-12-04 | 2012-12-04 | Radiating base plate of ingot casting polycrystalline furnace and ingot casting polycrystalline furnace comprising radiating base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658795 CN202954140U (en) | 2012-12-04 | 2012-12-04 | Radiating base plate of ingot casting polycrystalline furnace and ingot casting polycrystalline furnace comprising radiating base plate |
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| Publication Number | Publication Date |
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| CN202954140U true CN202954140U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220658795 Withdrawn - After Issue CN202954140U (en) | 2012-12-04 | 2012-12-04 | Radiating base plate of ingot casting polycrystalline furnace and ingot casting polycrystalline furnace comprising radiating base plate |
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| CN (1) | CN202954140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995105A (en) * | 2012-12-04 | 2013-03-27 | 英利集团有限公司 | Ingot-casting polycrystalline furnace and heat-dissipation bottom plate thereof |
| CN108565489A (en) * | 2018-03-20 | 2018-09-21 | 华霆（合肥）动力技术有限公司 | Thermal conductive silicon rubber cushion and battery modules |
-
2012
- 2012-12-04 CN CN 201220658795 patent/CN202954140U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995105A (en) * | 2012-12-04 | 2013-03-27 | 英利集团有限公司 | Ingot-casting polycrystalline furnace and heat-dissipation bottom plate thereof |
| CN102995105B (en) * | 2012-12-04 | 2015-04-22 | 英利集团有限公司 | Ingot-casting polycrystalline furnace and heat-dissipation bottom plate thereof |
| CN108565489A (en) * | 2018-03-20 | 2018-09-21 | 华霆（合肥）动力技术有限公司 | Thermal conductive silicon rubber cushion and battery modules |
| CN108565489B (en) * | 2018-03-20 | 2023-11-28 | 华霆（合肥）动力技术有限公司 | Heat conduction silica gel pad and battery module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20150422 |