US 11,982,013 B2
Raw material feed hopper and single crystal growth system
Sang Heon Lee, Gumi-si (KR); Chang Youn Lee, Gumi-si (KR); and Cheol Hwan Kim, Gumi-si (KR)
Assigned to SK SILTRON CO., LTD., Gumi-si (KR)
Filed by SK SILTRON CO., LTD., Gumi-si (KR)
Filed on May 28, 2021, as Appl. No. 17/333,957.
Claims priority of application No. 10-2021-0007361 (KR), filed on Jan. 19, 2021.
Prior Publication US 2022/0228289 A1, Jul. 21, 2022
Int. Cl. C30B 15/02 (2006.01); B65D 88/26 (2006.01); C30B 29/06 (2006.01)
CPC C30B 15/02 (2013.01) [B65D 88/26 (2013.01); C30B 29/06 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A raw material feed hopper comprising:
a hollow tube having a raw material accommodating space formed therein;
a supporter supporting the hollow tube;
a cone accommodated in the raw material accommodating space so as to be able to lift up and down;
a rod connected to the cone;
a connector connected to an upper portion of the rod;
a lifting rod connected to the connector, wherein the lifting rod is located outside of the hollow tube; and
an elevator installed on the supporter for lifting up and down the lifting rod,
wherein the elevator is configured to lift up the cone to a first height in the hollow tube before the hollow tube is supplied with a raw material, and
wherein the first height is a height closer to an upper end of the hollow tube than to a lower end of the hollow tube,
wherein the elevator gradually lowers a height of the cone while the raw material is supplied into the hollow tube,
wherein the supporter is provided with a hollow tube support for supporting the hollow tube so that the hollow tube is disposed at an angle that is obliquely laid with respect to the supporter, and
wherein the hollow tube support comprises
an inclined surface formed at an upper portion of the supporter, and
at least one roller on the inclined surface to guide the hollow tube.