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US 11,982,013 B2Granted
Raw material feed hopper and single crystal growth system
AssigneeSK Siltron Co., Ltd.
InventorsSang Heon Lee, Chang Youn Lee, Cheol Hwan Kim
Life of this patent
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Abstract
A raw material feed hopper according to the present embodiment may include 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, and an elevator installed on the supporter for lifting up and down the lifting rod.
Claims13
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.
12 more elements
A single crystal growth system comprising:
- a raw material feed hopper including 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, and an elevator installed on the supporter for lifting up and down the lifting rod;
- and
- a single crystal growth apparatus including a crucible in which a space for accommodating a raw material dropped from the hollow tube is formed, and a heater for heating the crucible,
- wherein the raw material feed hopper is moved around the single crystal growth apparatus, and is moved above the crucible together with the hollow tube, cone, rod, and connector and the raw material,
- wherein the lifting rod is located outside of the hollow tube,
- wherein the elevator lifts up the cone to a first height in the hollow tube before the hollow tube is supplied with the raw material,
- 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.
9 more elements
Dependencies are inferred from the claim text.