Patent ID: 9410264
Filing Date: 2016-08-09
CPC Classification: C30B

Claim Text:
1. An ingot growing apparatus configured to measure a weight of a growing ingot comprising: a main chamber comprising a crucible accommodating a source material therein and a heater melting the source material by heating the crucible; a dome chamber disposed on top of the crucible; a pull chamber disposed on top of the dome chamber; a seed cable by which an ingot grown in the crucible moves within the dome chamber and the pull chamber; and a weight-measuring unit disposed on top of the pull chamber, wherein the weight-measuring unit comprises: a housing disposed on top of the pull chamber, wherein an interior of the housing is maintained in a vacuum state; a support roller disposed within the housing to support the seed cable; and a load cell disposed outside of the housing to facilitate installation, replacement and repair, wherein the load cell measures a weight of the ingot supported by the support roller; a support roller holder positioned within and adjacent to an opening formed in a portion of the housing, wherein one end of the support roller holder is connected to the support roller, and the other end of the support roller holder is connected to the load cell; a flexible member providing a seal between the support roller holder and the opening such that an interior of the housing is maintained in a vacuum state; and a load cell holder disposed outside of the housing, wherein the load cell held by the load cell holder supports the support roller holder; wherein the support roller holder comprises a first holder section supporting the support roller, the first holder section extending through the opening, and a second holder section protruding outwardly from one end of the first holder section, a surface of the second holder section facing an outer circumferential surface of the opening, and the flexible member comprises a bellow disposed between the surface of the second support holder facing the outer circumferential surface of the opening and the outer circumferential surface of the opening.