Patent ID: 8858706

Claim:
A single-crystal manufacturing apparatus according to the Czochralski method, comprising: a crucible that contains a raw material; a main chamber that accommodates a heater for heating and melting the raw material; a pulling chamber configured to pull and accommodate a grown single crystal, the pulling chamber continuously provided above the main chamber; an inner shield for insulating heat radiated from the heater, the inner shield provided between the heater and the main chamber; and a supporting member for supporting the inner shield from below, wherein: the inner shield is supported at three or more supporting points contacting the supporting member, a lower end of the inner shield except at the supporting points does not contact the supporting member, the inner shield has a portion that does not contact the supporting member at the lower end of the inner shield, and the supporting member has a portion that does not contact the inner shield at an upper end of the supporting member.