Crucible protection plate and ingot furnace with same
By setting up radiant ports in the ingot casting furnace, the heat from the heater is directly radiated into the crucible arrangement cavity, solving the problem of heat loss during the heat transfer process, improving heat utilization and production efficiency, and reducing energy consumption.
Patent Information
- Application Number
- CN202423137343.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
In existing ingot furnaces, heat is severely lost during the heating of silicon material, resulting in low heat utilization and affecting production efficiency.
The design incorporates a crucible guard plate with a radiant port, which improves the heat utilization rate of the direct heater. The heat is radiated into the crucible cavity through the radiant port, reducing heat transfer steps and increasing heat utilization efficiency.
Reduce heat loss, improve the heat utilization rate of the heater, shorten the melting time of silicon material, improve production efficiency, and reduce energy consumption.
Smart Images
Figure CN223607426U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ingot furnace manufacturing technical field, especially a kind of crucible shield and the ingot furnace with it. BACKGROUND
[0002] In the ingot furnace in prior art, when using ingot furnace to purify silicon material, heater is generally used to heat crucible shield, and then heat crucible through heat conduction. However, this heating mode needs to transfer heat to crucible through crucible shield, which will cause heat loss in the process of heat transfer, and is not conducive to improving the heat utilization rate of heater. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in prior art. To this end, the utility model provides a kind of crucible shield, which can improve the heat utilization rate of heater.
[0004] The utility model further provides an ingot furnace with the above-mentioned crucible shield.
[0005] According to the crucible shield of the utility model embodiment, a plurality of the crucible shields surround the crucible arrangement cavity suitable for placing the crucible, at least one radiation port is provided on the crucible shield, the radiation port penetrates the crucible shield along the thickness direction of the crucible shield, and the lower edge of the radiation port in the up-down direction is suitable for being higher than the liquid level of the silicon liquid in the crucible, and the radiation port is configured to allow the heat of the heater to radiate to the crucible arrangement cavity through the radiation port.
[0006] According to the crucible shield of the utility model, the radiation port is provided, which can reduce the heat transfer step, reduce heat loss, improve the heat utilization rate of the heater and production efficiency.
[0007] According to some embodiments of the utility model, in the up-down direction, the distance between the top edge of the radiation port and the top edge of the crucible shield is in the range of 50mm-70mm.
[0008] According to some embodiments of the utility model, the number of the radiation ports is multiple, and the multiple radiation ports are arranged at intervals along the circumferential direction of the crucible shield. In the circumferential direction of the crucible shield, the spacing between the two adjacent radiation ports is in the range of 50mm-100mm.
[0009] According to some embodiments of the utility model, the crucible shield includes a plurality of splicing plates, the plurality of splicing plates are connected end to end along the circumferential direction of the crucible shield, and cooperate to define the crucible arrangement cavity, and the radiation port is formed on at least part of the splicing plates.
[0010] According to some optional embodiments of the present application, the distance between the radiation port and the edge of the splicing plate adjacent to the radiation port in the circumferential direction of the crucible shield is within the range of 100mm-200mm.
[0011] According to some embodiments of the present application, the splicing plate is a carbon-carbon material piece or a graphite piece.
[0012] According to some embodiments of the present application, the splicing plate comprises: a first plate and a second plate, the first plate and the second plate are both vertically arranged, the first plate is arranged on the upper side of the second plate and connected with the first plate, and the radiation port is formed on the first plate.
[0013] According to some optional embodiments of the present application, the height of the first plate is within the range of 270mm-350mm; and / or, the height of the second plate is within the range of 300mm-380mm.
[0014] According to some embodiments of the present application, in the up-down direction, the distance between the bottom edge of the radiation port and the bottom edge of the first plate is within the range of 30mm-70mm.
[0015] According to some embodiments of the present application, the first plate is a carbon-carbon material piece; and / or, the second plate is a graphite piece.
[0016] The ingot furnace according to the second aspect of the present application comprises: the crucible shield according to the first aspect of the present application; a crucible arranged in the crucible arrangement cavity; and a heater arranged on the side of the crucible shield away from the crucible, used for heating the crucible and the crucible shield.
[0017] According to the ingot furnace of the present application, by arranging the crucible shield of the first aspect of the present application and arranging the radiation port, the heat transfer step can be reduced, the heat loss can be reduced, the heat utilization rate of the heater can be improved, and the production efficiency can be improved.
[0018] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic view of one embodiment of the crucible shield according to the present application;
[0020] Figure 2 is Figure 1 a schematic view of another embodiment of the crucible shield shown in FIG.
[0021] REFERENCE NUMERALS:
[0022] 100. Crucible shield
[0023] 10. Splice plate; 11. First plate; 12. Second plate
[0024] 20. Radiating port DETAILED DESCRIPTION
[0025] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.
[0026] The following description will be made with reference to the drawings Figures 1-2 A crucible shield 100 according to an embodiment of the present application is described below.
[0027] Referring to Figure 1 and Figure 2 , the crucible shield 100 according to an embodiment of the present application, a plurality of crucible shields 100 enclose a crucible arrangement cavity suitable for placing a crucible, and the crucible shield 100 is provided with at least one radiating port 20, that is, the crucible shield 100 can be provided with one, two or more than three radiating ports 20, the radiating port 20 penetrates the crucible shield 100 along the thickness direction of the crucible shield 100, and the lower edge of the radiating port 20 is adapted to be higher than the liquid level of the silicon liquid in the crucible in the up-down direction (such as the up-down direction shown in the figure), and the radiating port 20 is configured to allow the heat of the heater to radiate to the crucible arrangement cavity through the radiating port 20. Figure 1
[0028] For example, as shown in Figure 1 and Figure 2 , the crucible shield 100 can be provided with one radiating port 20, and the crucible shield 100 can also be provided with two radiating ports 20, and the lower edge of the radiating port 20 is higher than the liquid level of the silicon liquid in the crucible.
[0029] When using an ingot furnace to purify silicon material, the heater is running, and the heat emitted by the heater is radiated to the crucible shield 100, and the crucible shield 100 transmits heat to the crucible, and the crucible heats the silicon material, and the heat at the position of the radiating port 20, the heat of the heater is directly radiated to the crucible through the radiating port, and the heat utilization rate is improved.
[0030] The crucible protection plate 100 of the utility model, set up radiation port 20, the heat of the heater can directly radiate to the crucible through the radiation port 20, need not pass through the heat conduction to transmit the heat to the crucible after the heater heats the protection plate, can reduce the heat transfer step, reduce the heat loss, can improve the heat utilization rate of the heater, shorten the silicon material melting time, improve the production efficiency, can also reduce the energy consumption.
[0031] In addition, the lower edge of the radiation port 20 is higher than the liquid level of the silicon liquid in the crucible, so that the crucible is not subjected to the pressure of the silicon liquid, and therefore the crucible protection plate 100 is not needed to be used for support, so that the safety of the silicon purification work can be ensured, and the rationality of the setting position of the radiation port 20 can be ensured.
[0032] The crucible protection plate 100 according to the embodiment of the utility model, set up radiation port 20, can reduce the heat transfer step, reduce the heat loss, can improve the heat utilization rate of the heater, improve the production efficiency.
[0033] According to some embodiments of the utility model, referring to Figure 1 and Figure 2 , in the up-down direction (such as the up-down direction shown in Figure 1 , the distance between the bottom edge of the radiation port 20 and the bottom edge of the crucible protection plate 100 is greater than or equal to 300mm. Thus, the lower edge of the radiation port 20 can be ensured to be higher than the liquid level of the silicon liquid in the crucible, so that the crucible protection plate 100 can provide stable support for the crucible.
[0034] For example, as shown in Figure 1 , in A of Figure 1 , the distance between the bottom edge of the radiation port 20 and the bottom edge of the crucible protection plate 100 can be 300mm, 310mm, 320mm, 330mm, 340mm, 350mm, 360mm, 370mm or 380mm.
[0035] Further, referring to Figure 1 and Figure 2 , in the up-down direction (such as the up-down direction shown in Figure 1 , the distance between the top edge of the radiation port 20 and the top edge of the crucible protection plate 100 is within the range of 50mm-70mm. Thus, the upper part of the radiation port 20 is provided with the crucible protection plate 100, which can reduce the carbon content of the silicon material, and ensure the product quality.
[0036] For example, as shown in Figure 1 and Figure 2 , in A of Figure 1The middle B represents the distance from the top edge of the radiation port 20 to the top edge of the crucible shield 100. The distance from the top edge of the radiation port 20 to the top edge of the crucible shield 100 can be 50mm, 55mm, 60mm, 65mm or 70mm.
[0037] According to some embodiments of the present application, referring to Figure 1 and Figure 2 , the number of radiation ports 20 is multiple, that is, the number of radiation ports 20 can be two, three or four or more, and the multiple radiation ports 20 are arranged at intervals along the circumference of the crucible shield 100. The distance between the adjacent two radiation ports 20 on the circumference of the crucible shield 100 is within the range of 50mm-100mm. Therefore, by providing multiple radiation ports 20, the heat of the heater can be radiated to the crucible arrangement cavity through the multiple radiation ports 20, thereby further improving the heat utilization rate of the heater, shortening the heating time of the crucible arrangement cavity, and at the same time, changing the longitudinal temperature gradient, which is more conducive to crystal growth and impurity removal.
[0038] In addition, by limiting the distance between the two radiation ports 20, the strength of the crucible shield 100 can be ensured, and the service life of the crucible shield 100 can be ensured.
[0039] For example, as shown in Figure 1 and Figure 2 , Figure 1 The middle C represents the distance between the adjacent two radiation ports 20. When the number of radiation ports 20 is two, the distance between the adjacent two radiation ports 20 can be 50mm, 60mm, 70mm, 80mm, 90mm or 100mm.
[0040] According to some optional embodiments of the present application, referring to Figure 1 and Figure 2 , the crucible shield 100 includes multiple splicing plates 10, that is, the crucible shield 100 can include two, three or four or more splicing plates 10. The multiple splicing plates 10 are connected end to end along the circumference of the crucible shield 100 and cooperate to define the crucible arrangement cavity. The radiation port 20 is formed on at least part of the splicing plate 10, that is, the radiation port 20 can be formed on part of the splicing plate 10, or the radiation port 20 can be formed on all the splicing plates 10.
[0041] In this way, the multiple splicing plates 10 can ensure the support effect of the crucible shield 100 on the crucible. During the work of purifying silicon, the risk of silicon liquid overflow due to softening of the crucible can be effectively prevented, thereby ensuring the safety of production. At the same time, by providing the radiation port 20 on the crucible shield 100, the space on the crucible shield 100 can be fully utilized, thereby effectively improving the functional integration of the crucible shield 100.
[0042] For example, as shown in Figure 1 and Figure 2 , the crucible shield 100 includes four spliced plates 10, which are connected end to end along the circumference of the crucible shield 100 and cooperate to define a crucible arrangement cavity, and all the spliced plates 10 are formed with a radiation port 20.
[0043] According to some optional embodiments of the present application, referring to Figure 1 and Figure 2 , in the circumferential direction of the crucible shield 100, the spacing between the radiation port 20 and the edge of the spliced plate 10 adjacent to the radiation port 20 is within the range of 100mm-200mm. Thus, the strength of the crucible shield 100 can be ensured, and the service life of the crucible shield 100 can be guaranteed.
[0044] For example, as shown in Figure 1 and Figure 2 , Figure 1 , D represents the spacing between the radiation port 20 and the edge of the spliced plate 10 adjacent to the radiation port 20, which can be 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm or 200mm.
[0045] According to some embodiments of the present application, referring to Figure 1 and Figure 2 , the spliced plate 10 is a carbon-carbon material piece or a graphite piece. Thus, the carbon-carbon composite material has extremely high mechanical strength and elastic modulus, which can effectively resist external impact and pressure, so that the spliced plate 10 can provide stable support for the crucible, the graphite has good heat conduction performance and high temperature resistance, so that the heat can be quickly and uniformly conducted, which helps to ensure that the material in the crucible is heated evenly, and at the same time, the graphite is easy to obtain and has low cost, so that it is convenient for batch use.
[0046] According to some embodiments of the present application, referring to Figure 2 , the spliced plate 10 includes a first plate 11 and a second plate 12, both of which are vertically arranged, the first plate 11 is arranged on the upper side of the second plate 12 (such as the upper side of the second plate 12 shown in Figure 2 ) and connected with the first plate 11, and the radiation port 20 is formed on the first plate 11. Thus, the split design of the spliced plate 10 allows individual replacement of damaged or worn parts without replacing the entire shield, which can reduce costs and better control heat distribution. For example, the upper shield can be made of a material with high thermal conductivity to improve heat utilization during the heating and melting stage, while the lower part can be made of graphite material to reduce heat loss during the crystal growth stage.
[0047] According to some optional embodiments of the present application, referring to Figure 2 , the height of the first plate 11 is in the range of 270mm-350mm; and / or, the height of the second plate 12 is in the range of 300mm-380mm. Thus, by limiting the height of the first plate 11 and the second plate 12, the height of the splicing plate 10 can be ensured to be higher than the crucible, so that the crucible guard plate 100 can provide stable support for the crucible, and meanwhile, the setting of the radiation port 20 on the first plate 11 can be facilitated.
[0048] For example, as shown in Figure 2 , Figure 2 , E represents the height of the first plate 11, and the height of the first plate 11 can be 270mm, 280mm, 290mm, 300mm, 310mm, 320mm, 330mm, 340mm or 350mm, Figure 2 , F represents the height of the second plate 12, and the height of the second plate 12 can be 300mm, 310mm, 320mm, 330mm, 340mm, 350mm, 360mm, 370mm or 380mm.
[0049] According to some embodiments of the present application, referring to Figure 2 , in the up-down direction, the distance between the bottom edge of the radiation port 20 and the bottom edge of the first plate 11 is in the range of 30mm-70mm. Thus, the crucible guard plate 100 is provided at the lower part of the radiation port 20, which can reduce the heat dissipation of the crucible in the crystal growth stage, so that the impurities can be avoided to segregate in the middle of the silicon ingot, which affects the quality of the output silicon material, and thus the impurity content of the silicon material can be reduced, and the product quality can be ensured.
[0050] For example, as shown in Figure 2 , Figure 2 , G represents the distance between the bottom edge of the radiation port 20 and the bottom edge of the first plate 11, and the distance between the bottom edge of the radiation port 20 and the bottom edge of the first plate 11 can be 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm or 70mm.
[0051] According to some embodiments of the present application, referring to Figure 2 , the first plate 11 is a carbon material piece. Thus, the carbon material piece has an advantage in plate thickness, so that the transportation and installation of the first plate 11 can be facilitated, and meanwhile, the carbon material piece has good thermal conductivity in the silicon material melting stage, so that the heat utilization rate of the heater can be improved.
[0052] Further, as shown in Figure 1As shown, the second plate 12 is a graphite component. Graphite possesses excellent thermal conductivity and high-temperature resistance, enabling it to conduct heat quickly and evenly, thus helping to ensure uniform heating of the material within the crucible. Furthermore, graphite is readily available and inexpensive, facilitating mass production.
[0053] According to the second aspect of the present invention, a casting furnace is provided, referring to... Figure 2 and The first aspect of this embodiment includes: a crucible guard plate 100, a crucible, and a heater. The crucible is disposed in the crucible arrangement cavity, and the heater is disposed on the side of the crucible guard plate 100 away from the crucible for heating the crucible and the crucible guard plate 100.
[0054] According to the embodiments of the present invention, by providing the crucible guard plate 100 of the first aspect embodiment and the radiant port 20, the heat transfer steps can be reduced, heat loss can be reduced, and the heat utilization rate of the heater can be improved, thereby increasing production efficiency.
[0055] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0058] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.
[0059] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A crucible shield (100) characterized in that, A plurality of the crucible shields (100) surround the crucible arrangement cavity suitable for placing the crucible, and at least one radiation port (20) is provided on the crucible shield (100), the radiation port (20) penetrates the crucible shield (100) along the thickness direction of the crucible shield (100), and the lower edge of the radiation port (20) in the up-down direction is suitable to be higher than the liquid level of the silicon liquid in the crucible, and the radiation port (20) is configured to allow the heat of the heater to radiate through the radiation port (20) into the crucible arrangement cavity.
2. The crucible shield (100) according to claim 1, characterized in that In the up-down direction, the distance between the top edge of the radiation port (20) and the top edge of the crucible shield (100) is in the range of 50mm-70mm.
3. The crucible shield (100) according to claim 1, characterized in that The number of the radiation ports (20) is multiple, and multiple radiation ports (20) are arranged at intervals along the circumferential direction of the crucible shield (100), and the interval between two adjacent radiation ports (20) in the circumferential direction of the crucible shield (100) is in the range of 50mm-100mm.
4. The crucible shield (100) according to claim 1, characterized in that The crucible shield (100) comprises a plurality of splicing plates (10), and the plurality of splicing plates (10) are connected end to end along the circumferential direction of the crucible shield (100) and cooperate to define the crucible arrangement cavity, and at least part of the splicing plates (10) are formed with the radiation port (20).
5. The crucible shield (100) according to claim 4, characterized in that In the circumferential direction of the crucible shield (100), the distance between the radiation port (20) and the edge of the splicing plate (10) adjacent to the radiation port (20) is in the range of 100mm-200mm.
6. The crucible shield (100) according to claim 4, characterized in that The splicing plate (10) is a carbon-carbon material piece or a graphite piece.
7. The crucible shield (100) according to claim 4, characterized in that The splicing plate (10) comprises a first plate (11) and a second plate (12), the first plate (11) and the second plate (12) are both vertically arranged, the first plate (11) is arranged on the upper side of the second plate (12) and connected with the first plate (11), and the radiation port (20) is formed on the first plate (11).
8. The crucible shield (100) according to claim 7, characterized in that The height of the first plate (11) is in the range of 270mm-350mm; and / or, The height of the second plate (12) is in the range of 300mm-380mm.
9. The crucible shield (100) according to claim 7, characterized in that In the up-down direction, the distance between the bottom edge of the radiation port (20) and the bottom edge of the first plate (11) is in the range of 30mm-70mm.
10. The crucible shield (100) of claim 7, wherein, The first plate (11) is a carbon-carbon material piece; and / or, the second plate (12) is a graphite piece.
11. An ingot casting furnace characterized by comprising: Comprise: The crucible shield (100) of any one of claims 1-10; The crucible is arranged in the crucible arrangement cavity; The heater is arranged on the side of the crucible shield (100) away from the crucible for heating the crucible and the crucible shield (100).