CN212925226U - Quartz crucible, crucible mold, formed part and forming device - Google Patents
Quartz crucible, crucible mold, formed part and forming device Download PDFInfo
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- CN212925226U CN212925226U CN202020938327.4U CN202020938327U CN212925226U CN 212925226 U CN212925226 U CN 212925226U CN 202020938327 U CN202020938327 U CN 202020938327U CN 212925226 U CN212925226 U CN 212925226U
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Abstract
The utility model provides a quartz crucible, the crucible mould, formed part and forming device, relate to solar photovoltaic technical field, quartz crucible includes drum shape barrel and the taper cylinder body of being connected with drum shape barrel, taper cylinder body is located the lower part of drum shape barrel, taper cylinder body's bottom is the circular arc curved surface, in the crystal pulling in-process, can reduce the remaining molten liquid volume in the crucible bottom after the completion of crystal pulling ending, reduce the extravagant and therefore the cost-push who brings of raw materials, further when taper cylinder body's bottom is the circular arc curved surface, in quartz crucible's use and place the in-process, can increase the stress area of taper cylinder body bottom, improve quartz crucible's stability, and the circular arc curved surface can avoid quartz crucible's bottom and other hard contacts of object, improve quartz crucible's durability.
Description
Technical Field
The utility model relates to a solar photovoltaic technology field especially relates to a quartz crucible, crucible mould, formed part and forming device.
Background
At present, monocrystalline silicon is produced mainly by a monocrystalline furnace through a czochralski method, the monocrystalline furnace mainly comprises a furnace body, a supporting rod, a tray and a quartz crucible are sequentially arranged in the furnace body from bottom to top, the tray is used for bearing and fixing the quartz crucible, and the supporting rod is used for driving the tray and the quartz crucible to move. In the process of producing the monocrystalline silicon, firstly, polycrystalline silicon raw materials are placed in a quartz crucible and heated to form molten polycrystalline silicon melt, then a tray and the quartz crucible are driven to move through a supporting rod, and the molten polycrystalline silicon melt is pulled to obtain the monocrystalline silicon rod.
The quartz crucible for pulling a single crystal is substantially cylindrical as a whole and includes a side wall and a bottom. As the crystal grows, the level of the melt in the crucible drops to near the bottom of the crucible. In order to avoid introducing impurities at the bottom of the crucible into the growing single crystal, a certain height of melt remains at the bottom of the crucible after the completion of the crystal pulling. Because the sectional area of the bottom of the crucible is basically the same as that of the top of the crucible at present, the residual molten liquid is larger, and the partial molten liquid is difficult to recycle. Therefore, a certain amount of raw materials are wasted, which is not favorable for reducing the cost of the monocrystalline silicon.
SUMMERY OF THE UTILITY MODEL
The utility model provides a quartz crucible, crucible mould, formed part and forming device, when the bottom that aims at solving quartz crucible was the toper, quartz crucible's bottom lifting surface area diminished, quartz crucible's the poor problem of stability.
The embodiment of the utility model provides a first aspect provides a quartz crucible, quartz crucible include drum shape barrel and with the cone-shaped barrel that drum shape barrel is connected, cone-shaped barrel is located the lower part of drum shape barrel, cone-shaped barrel's bottom is circular arc curved surface.
Optionally, the arc curved surface is a spherical surface or an ellipsoidal surface.
Optionally, the inner wall of the cylindrical barrel is in arc transition connection with the inner wall of the conical barrel.
Optionally, the cylindrical barrel and the conical barrel respectively comprise a bubble layer and a transparent layer, the transparent layer is located on one side close to the axis of the conical barrel, and the bubble layer is located on one side far away from the axis of the conical barrel.
The embodiment of the utility model provides a crucible mould is provided in the second aspect, crucible mould include the drum shape barrel and with the cone cylinder that the drum shape barrel is connected, the cone cylinder is located the lower part of drum shape barrel, the inboard of cone cylinder bottom is circular arc curved surface.
Optionally, the arc curved surface is a spherical surface or an ellipsoidal surface.
Optionally, the inner wall of the cylindrical barrel is in arc transition connection with the inner wall of the conical barrel.
A third aspect of an embodiment of the present invention provides a molded part, including a first member, a second member, and a positioning member; one end of the first component is connected with the first end of the second component, the positioning piece is installed at the second end of the second component, and the positioning piece is matched with the crucible mold, so that a blank obtained by molding the second component is a conical barrel-shaped blank.
Optionally, a first straight wall is formed on one side of the first member close to the crucible mold, a second straight wall is formed on one side of the second member close to the crucible mold, and the first straight wall and the second straight wall are intersected and form a preset included angle.
Optionally, the first straight wall and the second straight wall are in transition connection by adopting an arc section.
Optionally, an arc section is arranged at the second end of the second member, and the arc section is matched with the crucible mold, so that the bottom of the blank is an arc curved surface.
The embodiment of the utility model provides a fourth aspect provides a forming device, include the utility model discloses the crucible mould that the embodiment second aspect provided and the formed part that should implement the third aspect and provide.
The embodiment of the utility model provides an in, quartz crucible includes drum shape barrel and the cone body of being connected with drum shape barrel, and cone body is located the lower part of drum shape barrel, when the crucible bottom is the toper, can reduce the remaining melt volume in the crucible bottom after the crystal pulling is ended and is accomplished, reduces the raw materials extravagant and therefore the cost-push who brings. Furthermore, the bottom of the conical cylinder body is an arc curved surface, in the using process of the quartz crucible, when the bottom of the conical cylinder body is the arc curved surface, the contact area between the bottom of the conical cylinder body and the tray can be increased, the stress area at the bottom of the conical cylinder body is further increased, the stability of the quartz crucible is improved, the arc curved surface can prevent the bottom of the quartz crucible from being in hard contact with other objects, and the durability of the quartz crucible is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a cross-sectional view of a quartz crucible according to a first embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a crucible mold in a second embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a forming part in a third embodiment of the present invention.
Description of reference numerals:
101-cylinder-shaped cylinder body, 102-conical cylinder body, 1021-side wall, 1022-first circular arc connecting section, 1023-second circular arc connecting section, 201-cylinder-shaped cylinder body, 202-conical cylinder body, 203-vacuum hole, 204-circular arc curved surface, 205-third circular arc connecting section, 301-first member, 302-second member, 3021-circular arc section, 303-positioning piece and 304-handle.
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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a cross-sectional view of a quartz crucible according to a first embodiment of the present invention, and as shown in fig. 1, the quartz crucible includes a cylindrical barrel and a conical barrel connected to the cylindrical barrel, the conical barrel is located at a lower portion of the cylindrical barrel, and a bottom of the conical barrel is a circular arc curved surface.
Illustratively, the quartz crucible includes a cylindrical barrel 101 and a conical barrel 102, the cylindrical barrel 101 constituting a side wall of the quartz crucible, and the conical barrel 102 constituting a bottom of the quartz crucible. As shown in fig. 1, the cylindrical tube 101 has a cylindrical shape with both ends open, the tapered tube 102 has a hollow cone inside, and the bottom surface of the cone is provided with an opening for connecting to the cylindrical tube 101. One end of the cylindrical tube 101 is connected to the end of the conical tube 102 having the opening, thereby forming a quartz crucible.
In this embodiment, the bottom of the tapered cylinder 102 (i.e. the position of the taper angle of the taper) is a circular arc curved surface, as shown in fig. 1, the sidewall 1021 of the tapered cylinder 102 and the first circular arc connecting section 1022 form a closed end to form the bottom of the tapered cylinder 102. The side of the first circular arc connecting section 1022 far from the tapered cylinder 101 is a circular arc curved surface, such as a spherical surface. In practical applications, the inner side of the first circular arc connecting section 1022, i.e., the inner wall of the bottom of the conical cylinder 101, may also be a circular arc curved surface.
The cylindrical body 101 and the tapered body 102 may be integrally formed, or may be formed by connecting the cylindrical body 101 and the tapered body 102 separately.
In this embodiment, the quartz crucible includes a cylindrical barrel and a conical barrel connected to the cylindrical barrel, and the conical barrel is located at a lower portion of the cylindrical barrel, so that when the bottom of the crucible is conical, the amount of melt remaining at the bottom of the crucible after completion of crystal pulling can be reduced, and waste of raw materials and increase of cost caused thereby can be reduced. Furthermore, the bottom of the conical cylinder body is an arc curved surface, in the using process of the quartz crucible, when the bottom of the conical cylinder body is the arc curved surface, the contact area between the bottom of the conical cylinder body and the tray can be increased, the stress area at the bottom of the conical cylinder body is further increased, the stability of the quartz crucible is improved, the arc curved surface can prevent the bottom of the quartz crucible from being in hard contact with other objects, and the durability of the quartz crucible is improved.
Optionally, the arc curved surface is a spherical surface or an ellipsoidal surface.
In this embodiment, the arc curved surface may be a spherical surface or an ellipsoidal surface, and the spherical surface or the ellipsoidal surface may further increase the area of the bottom of the quartz crucible, thereby improving the stability of the quartz crucible.
Optionally, the radius of the arc curved surface is greater than or equal to 135 mm and less than or equal to 165 mm.
In this embodiment, when the arc curved surface is a spherical surface, the center of the arc curved surface may be located on the axis of the conical cylinder 102, and the generatrix of the cone may be tangent to the arc curved surface, so that the bottom of the conical cylinder 102 is in a regular shape. When the quartz crucible is manufactured, the radius of the curved surface of the circular arc may be 135 mm or more and 165 mm or less.
Optionally, the taper angle of the tapered cylinder is 75 degrees or more and 105 degrees or less.
In combination with the above example, the tapered cylinder may be a hollow cone, and the taper angle of the cone may be 75 degrees or more and 105 degrees or less.
Optionally, the inner wall of the cylindrical barrel is in arc transition connection with the inner wall of the conical barrel.
In combination with the above example, the cylindrical barrel 101 and the conical barrel 102 are connected by the second circular arc connecting section 1023, so that the inner wall of the cylindrical barrel 101 and the inner wall of the conical barrel 102 can adopt circular arc transition connection. As shown in FIG. 1, when the inner wall of the cylindrical barrel 101 and the inner wall of the conical barrel 102 are transitionally connected through an arc, the friction force between the silicon material and the inner wall of the quartz crucible can be reduced, and the service life of the crucible can be prolonged.
Optionally, the cylindrical barrel and the conical barrel respectively comprise a bubble layer and a transparent layer, the transparent layer is located on one side close to the axis of the conical barrel, and the bubble layer is located on one side far away from the axis of the conical barrel.
In combination with the above examples, the cylindrical barrel 101 and the conical barrel 102 may be composed of a bubble layer and a transparent layer, the bubble layer may make the quartz crucible uniformly contact with the heat source, thereby improving the heating efficiency of the quartz crucible, the transparent layer may reduce the bubble density at the contact position of the quartz crucible and the polysilicon melt, and the success rate of pulling and the quality of the single crystal silicon rod may be improved during the manufacturing process of the single crystal silicon.
Example two
Referring to fig. 2, fig. 2 shows a structural schematic diagram of a crucible mold in the second embodiment of the present invention, the crucible mold includes a cylindrical barrel and a conical barrel connected to the cylindrical barrel, the conical barrel is located at the lower part of the cylindrical barrel, and the inner side of the bottom of the conical barrel is a circular arc curved surface.
Illustratively, the crucible mold includes a cylindrical barrel 201 and a tapered barrel 202, the cylindrical barrel 201 constituting a side wall of the crucible mold, and the tapered barrel 202 constituting a bottom of the crucible mold. As shown in fig. 2, the cylindrical tube 201 is a tube with both ends open, the tapered tube 202 is a hollow cone, and the bottom surface of the cone is provided with an opening for connecting to the cylindrical tube 201. One end of the cylindrical barrel 201 is connected to the end of the tapered barrel 202 having the opening, thereby forming a crucible mold.
In this embodiment, the inner side of the bottom of the tapered cylinder 202, i.e. the inner wall of the tapered cylinder 202 and the position of the taper angle of the taper, is an arc curved surface 204, and the arc curved surface 204 is, for example, a spherical surface. In the process of manufacturing the quartz crucible, when the crucible mold rotates around the axis, raw materials (such as quartz sand) are added into the crucible mold, the raw materials form a first blank (namely, a blank corresponding to the cylindrical barrel 101 in fig. 1) on the inner wall of the cylindrical barrel 201 through the matching of a forming piece and the crucible mold, a second blank (namely, a blank corresponding to the cylindrical barrel 102 in fig. 1) is formed on the inner wall of the conical barrel 202, the quartz crucible shown in fig. 1 is manufactured through the first blank and the second blank, and when the inner side of the bottom of the conical barrel 202 is a circular arc curved surface, the bottom of the molded quartz crucible is the circular arc curved surface.
The cylindrical tube 201 and the tapered tube 202 may be integrally formed, or may be formed by connecting the cylindrical tube 201 and the tapered tube 202 separately. The cylindrical barrel 201 and the conical barrel 202 may be made of a graphite material or may be made of a high temperature resistant metal.
In this embodiment, the quartz crucible includes a cylindrical barrel and a conical barrel connected to the cylindrical barrel, and the conical barrel is located at a lower portion of the cylindrical barrel, so that when the bottom of the crucible is conical, the amount of melt remaining at the bottom of the crucible after completion of crystal pulling can be reduced, and waste of raw materials and increase of cost caused thereby can be reduced. Furthermore, the bottom of the conical cylinder body is an arc curved surface, in the using process of the quartz crucible, when the bottom of the conical cylinder body is the arc curved surface, the contact area between the bottom of the conical cylinder body and the tray can be increased, the stress area at the bottom of the conical cylinder body is further increased, the stability of the quartz crucible is improved, the arc curved surface can prevent the bottom of the quartz crucible from being in hard contact with other objects, and the durability of the quartz crucible is improved.
Optionally, the arc curved surface is a spherical surface or an ellipsoidal surface.
In this embodiment, the arc curved surface may be a spherical surface or an ellipsoidal surface, and the spherical surface or the ellipsoidal surface may further increase the area of the bottom of the crucible mold, thereby increasing the area of the bottom of the quartz crucible obtained by manufacturing and improving the stability of the quartz crucible.
Optionally, the radius of the arc curved surface is greater than or equal to 135 mm and less than or equal to 165 mm.
In this embodiment, when the arc curved surface is a spherical surface, the center of the arc curved surface may be located on the axis of the tapered cylinder 202, and the inner wall of the tapered cylinder may be tangent to the arc curved surface. When the quartz crucible is manufactured, the radius of the arc curved surface of the bottom of the quartz crucible may be 135 mm or more and 165 mm or less.
Optionally, the taper angle of the tapered cylinder 202 is equal to or greater than 75 degrees and equal to or less than 105 degrees.
In this embodiment, the taper angle of the taper corresponding to the taper cylinder 102 may be set to 75 degrees or more and 105 degrees or less.
Optionally, the inner wall of the cylindrical barrel is in arc transition connection with the inner wall of the conical barrel.
In combination with the above example, the cylindrical barrel 201 and the conical barrel 202 are connected by the third arc connecting section 205, so that the inner wall of the cylindrical barrel 201 and the inner wall of the conical barrel 202 can adopt arc transition connection. As shown in fig. 2, when the inner wall of the cylindrical barrel 201 and the inner wall of the conical barrel 202 are in arc transition connection, the side wall and the bottom of the quartz crucible manufactured by the crucible mold are in arc transition, so that the friction force between the silicon material and the inner wall of the quartz crucible can be reduced, and the service life of the crucible can be prolonged.
Alternatively, a plurality of vacuum holes 203 may be provided at intervals on the crucible mold. Referring to fig. 2, the vacuum holes 203 may be uniformly arranged on the cylindrical barrel 201 and the tapered barrel 202 around the axis of the crucible mold, and the specific structure and the using method of the vacuum holes are not limited by the embodiment.
EXAMPLE III
Referring to fig. 3, fig. 3 shows a schematic structural diagram of a molded part in a third embodiment of the present invention, where the molded part includes a first member 301, a second member 302 and a positioning member 303.
As shown in fig. 3, one end of the first member 301 is connected to a first end of the second member 302, and the positioning member 303 is mounted to a second end of the second member 302. The positioning member 303 may be provided on a side of the second member 302 adjacent to an inner wall of the crucible mold to facilitate engagement with the crucible mold.
In this embodiment, the first member 301 and the second member 302 may be straight cylinders, prisms, or flat plates, or other structures, which is not limited in this embodiment. The first end and the second end of the second member 302 are opposite ends, the first end of the second member 302 is used for connecting the first member 301, and the second end is used for connecting the positioning member 303.
The end of the positioning member 303 remote from the second member 302 may be provided with a tapered tip for engaging with the bottom of the crucible mold to secure the molded part. Meanwhile, a handle 304 may be provided at an end of the first member 301 remote from the second member 302 to facilitate lifting of the molded article.
In connection with the second embodiment, the positioning member 303 is used for matching with a crucible mold, the joint of the first member 301 and the second member 302 is at an angle, a first blank is formed on the inner wall of the cylindrical barrel 201 through the first member 301, and a second blank is formed on the inner wall of the conical barrel through the second member 302. Meanwhile, when the second member 302 is a cylinder or a flat plate, the side of the second member 302 close to the conical cylinder 202 may be a straight line or a plane, so that the second blank obtained by molding the second member 302 may be a conical cylindrical blank. The specific structures and the shapes of the first component, the second component and the positioning piece can be set according to requirements, and only a blank obtained by molding the second component is a conical cylindrical blank.
Illustratively, a first straight wall is formed on one side of the first member 301 close to the crucible mold, and a second straight wall is formed on one side of the second member 302 close to the crucible mold, and the first straight wall and the second straight wall intersect with each other at a preset included angle.
For example, as shown in fig. 3, each of the first member 301 and the second member 302 is a cylinder, the axis of the first member 301 and the axis of the second member 302 intersect each other at a predetermined angle, the side of the first member 301 close to the cylindrical barrel 201 is a straight line (first straight wall), and the side of the second member 302 close to the tapered barrel 202 is a straight line (second straight wall). During the manufacture of the quartz crucible, the crucible mold rotates, and the raw material in the crucible mold can be molded on the inner wall of the conical cylinder 202 by the second member 302 to obtain a second blank. The size of the preset angle can be set according to the requirement, which is not limited in this embodiment.
Optionally, the second end of the second member is provided with an arc section, and the arc section is matched with the crucible mold, so that the bottom of the blank is an arc curved surface.
In connection with the second embodiment, the second end of the second member 302 may be provided with a circular arc section 3021, and the circular arc section 3021 is engaged with the inner wall of the conical cylinder 202, so that the bottom of the quartz crucible is a circular arc curved surface.
Optionally, the first straight wall and the second straight wall are in transition connection by adopting a circular arc section.
In combination with the first and second embodiments, the side of the first member 301 close to the inner wall of the cylindrical barrel 201 and the side of the second member 302 close to the inner wall of the conical barrel 202 can be connected by arc transition, and during the molding process of the quartz crucible, the molded part is matched with the crucible mold, so that the inner wall of the cylindrical barrel 101 and the inner wall of the conical barrel 102 of the manufactured quartz crucible can be connected by arc transition.
In this example, the molded article was fitted to a crucible mold to produce a quartz crucible having a tapered cylindrical shape.
Example four
This embodiment provides a molding apparatus including the crucible mold according to the second embodiment and the molded article according to the third embodiment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (12)
1. The quartz crucible is characterized by comprising a cylindrical barrel and a conical barrel connected with the cylindrical barrel, wherein the conical barrel is positioned at the lower part of the cylindrical barrel, and the bottom of the conical barrel is an arc curved surface.
2. The quartz crucible of claim 1, wherein the curved surface of the circular arc is a spherical surface or an ellipsoidal surface.
3. The quartz crucible of claim 1, wherein the inner wall of the cylindrical body and the inner wall of the conical body are in circular arc transition connection.
4. The quartz crucible according to any one of claims 1 to 3, wherein the cylindrical shell and the conical shell comprise a bubble layer and a transparent layer, respectively, the transparent layer being located on a side close to an axis of the conical shell, and the bubble layer being located on a side remote from the axis of the conical shell.
5. The crucible mold is characterized by comprising a cylindrical barrel and a conical barrel connected with the cylindrical barrel, wherein the conical barrel is positioned at the lower part of the cylindrical barrel, and the inner side of the bottom of the conical barrel is an arc curved surface.
6. The crucible mold of claim 5, wherein the curved surface is spherical or ellipsoidal.
7. The crucible mold of claim 5, wherein the inner wall of the cylindrical barrel and the inner wall of the conical barrel are in circular arc transition connection.
8. A moulding comprising a first member, a second member and a locating member; one end of the first component is connected with the first end of the second component, the positioning piece is installed at the second end of the second component, and the positioning piece is matched with the crucible mold, so that a blank obtained by molding the second component is a conical barrel-shaped blank.
9. The molded article as defined in claim 8, wherein the first member is formed with a first straight wall on a side thereof adjacent to the crucible mold, and the second member is formed with a second straight wall on a side thereof adjacent to the crucible mold, the first straight wall intersecting the second straight wall at a predetermined included angle.
10. The forming section of claim 9, wherein the first straight wall and the second straight wall are transitionally connected by a circular arc segment.
11. A shaped part according to any one of claims 8 to 10 wherein the second end of the second member is provided with a circular arc section which cooperates with the crucible mould to give the bottom of the body a circular arc curvature.
12. A molding apparatus comprising the crucible mold according to any one of claims 5 to 7 and the molded article according to any one of claims 8 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938327.4U CN212925226U (en) | 2020-05-28 | 2020-05-28 | Quartz crucible, crucible mold, formed part and forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938327.4U CN212925226U (en) | 2020-05-28 | 2020-05-28 | Quartz crucible, crucible mold, formed part and forming device |
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| Publication Number | Publication Date |
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| CN212925226U true CN212925226U (en) | 2021-04-09 |
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| CN202020938327.4U Active CN212925226U (en) | 2020-05-28 | 2020-05-28 | Quartz crucible, crucible mold, formed part and forming device |
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| Country | Link |
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| CN (1) | CN212925226U (en) |
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