Novel crucible edge structure

Abstract

The utility model discloses a novel crucible edge structure which comprises an upper crucible edge, a lower crucible edge and a heat insulation ring, the upper crucible edge and the lower crucible edge are fixedly connected through the heat insulation ring, in the normal crystal pulling process, a main heater is located on the inner side of the upper crucible edge for continuous heating, and the heat insulation ring can effectively prevent heat from being transmitted to the lower crucible edge from the upper crucible edge. Therefore, the temperature of the bottom of the crucible edge can be well reduced, oxygen precipitation at the bottom of the crucible edge is reduced, product quality is improved, and power consumption can be reduced. The crucible edge structure comprises the upper crucible edge, the heat insulation ring and the lower crucible edge from top to bottom, a split-type splicing structure is adopted, in the using process, if the crucible edge is damaged, only the corresponding damaged structure needs to be replaced, the whole crucible edge does not need to be replaced, and therefore the production cost can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crystal manufacturing, in particular to a novel crucible structure. Background Art

[0002] At present, most of the crucibles used in the crystal manufacturing process are one-piece carbon-carbon material structures. The high-strength carbon-carbon composite material used has a thermal conductivity of up to 400w / (m·K), which has good thermal conductivity. Therefore, while this structure ensures that the temperature at the crystal liquid surface is stable at 1450℃±2℃, it will also cause the heat from the main heater to be transferred downward along the crucible, causing the temperature at the bottom of the crucible to rise, causing oxygen precipitation, resulting in a decrease in crystal quality, and also causing a large amount of unnecessary heat loss. In addition, during use, if the crucible is damaged, it needs to be repaired immediately. If the damage is more serious, the entire crucible needs to be replaced, and the cost of the crucible is between 14,000 and 15,000 yuan, which increases production costs. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a novel crucible structure that can lower the bottom temperature, reduce oxygen precipitation, improve product quality, and reduce power consumption and production costs.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: a new crucible bang structure, including an upper crucible bang, a lower crucible bang and an insulation ring, wherein the upper crucible bang and the lower crucible bang are fixedly connected through the insulation ring.

[0005] Compared to existing technologies, the present invention offers the following advantages: The crucible structure is equipped with an insulation ring. During normal crystal pulling, the main heater located inside the upper crucible continuously heats the crucible. The insulation ring effectively prevents heat transfer from the upper crucible to the lower crucible, thereby significantly reducing the crucible bottom temperature. This reduces oxygen precipitation at the crucible bottom, improves product quality, and also reduces power consumption. The crucible structure, consisting of the upper crucible, insulation ring, and lower crucible from top to bottom, utilizes a split-piece design. If the crucible becomes damaged during use, only the damaged structure can be replaced, without having to replace the entire crucible. This significantly reduces production costs. In addition, since the present crucible bang structure adopts a splicing structure, it can be modified on the basis of the structure of the existing crucible bang. The existing crucible bang can be divided into upper and lower parts by cutting and polishing, and the installation position of the thermal insulation ring can be cut and polished at the lower edge of the upper part and the upper edge of the lower part. The thermal insulation ring is then installed, and the upper crucible bang, the thermal insulation ring and the lower crucible bang are fixedly connected to obtain the crucible bang structure in this scheme. This not only reduces the design and modification cost of the crucible bang structure, but also retains the original shape and size of the crucible bang structure, and does not affect the coordinated use of the crucible bang structure with other structures in the furnace.

[0006] In the above-mentioned novel crucible-bang structure, the upper end of the thermal insulation ring is provided with a first annular groove, and the lower end is provided with a second annular groove. The first annular groove is sleeved on the lower edge of the upper crucible-bang, and the second annular groove is sleeved on the upper edge of the lower crucible-bang.

[0007] In the novel crucible-bang structure, an annular recessed portion concave outward is provided on the inner side of the lower edge of the upper crucible-bang and the inner side of the upper edge of the lower crucible-bang, and the inner side of the thermal insulation ring is embedded in the annular recessed portion.

[0008] In the novel crucible structure, the annular recessed portion has a radial recessed depth of 3 mm and an axial recessed depth of 2 mm.

[0009] In the above-mentioned novel crucible structure, the cross section of the heat insulation ring along the axial direction is "H"-shaped.

[0010] In the above-mentioned novel crucible structure, the thermal insulation ring is a ceramic ring.

[0011] In the above-mentioned novel crucible structure, the thickness of the thermal insulation ring along the axial direction is 20 mm.

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the crucible structure of an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 The exploded view of the Brahma structure shown;

[0015] Figure 3 for Figure 1 A cross-sectional view of the brazed structure along the axial direction;

[0016] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0017] Description of the accompanying drawings: 100 upper crucible, 200 lower crucible, 300 thermal insulation ring, 310 first annular groove, 320 second annular groove, 400 annular recessed portion. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below. Figures 1 to 4 The embodiment of the present utility model provides a new crucible bang structure, including an upper crucible bang 100, a lower crucible bang 200 and an insulation ring 300, and the upper crucible bang 100 and the lower crucible bang 200 are fixedly connected by the insulation ring 300.

[0019] This crucible structure is provided with an insulating ring 300. During the normal crystal pulling process, the main heater is located inside the upper crucible 100 and continuously heats. The insulating ring 300 can effectively prevent heat from being transferred from the upper crucible 100 to the lower crucible 200, thereby effectively reducing the temperature of the crucible bottom. While reducing oxygen precipitation at the bottom of the crucible and improving product quality, it can also reduce power consumption.

[0020] The crucible bond structure includes an upper crucible bond 100, an insulating ring 300 and a lower crucible bond 200 from top to bottom, and adopts a split-type splicing structure. During use, if the crucible bond is damaged, only the damaged structure can be replaced, and the replaced part can be repaired uniformly without affecting the normal operation of the single crystal furnace. If the damage is serious, only part of the structure can be scrapped without replacing the entire crucible bond, thereby greatly reducing production costs.

[0021] In addition, since the present crucible structure adopts a splicing structure, it can be modified on the basis of the structure of the existing crucible. The existing crucible can be divided into upper and lower parts by cutting and grinding, and the installation position of the heat insulating ring 300 is cut and ground at the lower edge of the upper part and the upper edge of the lower part, and then the heat insulating ring 300 is installed. The upper crucible 100, the heat insulating ring 300 and the lower crucible 200 are fixedly connected to obtain the crucible structure in this solution. This not only reduces the design and modification cost of the crucible structure, but also retains the original shape and size of the crucible structure, and does not affect the coordination and use of the crucible structure with other structures in the furnace. Further, when cutting and grinding on the basis of the original crucible structure, grinding and cutting can be performed at the bottom of the original crucible structure, approximately at the position of the maximum upward stroke of the support rod during the normal crystal pulling process, to divide the original integrated crucible structure into two parts.

[0022] Further, refer to Figure 3 and Figure 4 The upper end of the heat-insulating ring 300 is provided with a first annular groove 310, and the lower end is provided with a second annular groove 320. The first annular groove 310 is sleeved on the lower edge of the upper crucible 100, and the second annular groove 320 is sleeved on the upper edge of the lower crucible 200. This facilitates the connection between the upper crucible 100 and the lower crucible 200, improves the connection stability between the upper crucible 100 and the lower crucible 200, and prevents the heat inside the crucible from dissipating outwards. Furthermore, if Figure 4 As shown, the cross section of the heat-insulating ring 300 along the axial direction is "H" shaped. Figure 2The inner sides of the lower edges of the upper crucible 100 and the upper edges of the lower crucible 200 are each provided with an outwardly concave annular recess 400, into which the inner side of the thermal insulation ring 300 is nested. This allows the upper crucible 100 and lower crucible 200 to be connected to the thermal insulation ring 300 in a nested manner, improving connection stability while also ensuring that the inner sides of the upper crucible 100, lower crucible 200, and thermal insulation ring 300 are flush, thereby preserving the overall appearance of the original crucible structure and not affecting its coordination with other furnace structures.

[0023] Furthermore, the insulation ring 300 has an axial thickness of 20 mm. During the cutting and grinding of the existing crucible structure, a total thickness of 20 mm was cut along the axial direction along the lower edge of the upper crucible 100 and the upper edge of the lower crucible 200 to reserve space for the installation of the insulation ring 300. Simultaneously, an annular recess 400 was cut and ground on the inner side of the lower edge of the upper crucible 100 and the inner side of the upper edge of the lower crucible 200. The depth of the annular recess 400 is 3 mm in the radial direction and 2 mm in the axial direction.

[0024] Furthermore, the thermal insulation ring 300 is a ceramic ring. The thermal conductivity of the ceramic structure is between 0.03W / (m·K) and 2.00W / (m·K). It has good thermal insulation performance, is easier to form, has low raw material cost, and has high structural strength.

[0025] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operated in a specific direction, and cannot be understood as a limitation on the present invention.

[0026] In the description of this utility model, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A new type of crucible structure, characterized in that: The invention comprises an upper crucible band (100), a lower crucible band (200) and a heat-insulating ring (300), wherein the upper crucible band (100) and the lower crucible band (200) are fixedly connected via the heat-insulating ring (300).

2. The novel crucible structure according to claim 1 is characterized in that: The upper end of the heat-insulating ring (300) is provided with a first annular groove (310), and the lower end is provided with a second annular groove (320), the first annular groove (310) is sleeved on the lower edge of the upper crucible (100), and the second annular groove (320) is sleeved on the upper edge of the lower crucible (200).

3. The novel crucible structure according to claim 2 is characterized in that: The inner side of the lower edge of the upper crucible (100) and the inner side of the upper edge of the lower crucible (200) are both provided with an outwardly recessed annular recess (400), and the inner side of the thermal insulation ring (300) is embedded in the annular recess (400).

4. The novel crucible structure according to claim 3 is characterized in that: The annular recessed portion (400) has a recessed depth of 3 mm in the radial direction and a recessed depth of 2 mm in the axial direction.

5. The novel crucible structure according to claim 2 is characterized in that: The cross section of the heat-insulating ring (300) along the axial direction is in an "H" shape.

6. The novel crucible structure according to claim 1 is characterized in that: The thermal insulation ring (300) is a ceramic ring.

7. The novel crucible structure according to claim 1 is characterized in that: The thickness of the heat-insulating ring (300) along the axial direction is 20 mm.

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