Crystal growth apparatus and thermal insulation cover of the same

A crystal growth apparatus, comprising:

• a crucible for holding a material to be melted;
• a thermal insulation cover comprising a main body and an insulating member, wherein the main body has a bottom surface facing an inner bottom of the crucible;
• the insulating member is provided on the main body at a location opposite to the bottom surface of the main body, and is within an orthographic range of the bottom surface;
• a driving device capable of moving the thermal insulation cover towards or away from the crucible;
• and
• a heating device for heating the crucible;
• wherein the whole thermal insulation cover is provided above the material to be melted, and is connected to the driving device via a wire;
• wherein the thermal insulation cover further comprises at least one passage passing through the main body and the insulating member;
• the passage communicates with spaces above and below the thermal insulation cover;
• wherein after the material in the crucible is melted into a liquid, the driving device is controlled to move the thermal insulation cover upwardly to leave the crucible, and then a process of crystal growth proceeds;
• wherein the thermal insulation cover includes a connector engaged with the main body, and the thermal insulation cover is connected to the wire with the connector;
• wherein the wire and the connector extend along a central axis of the thermal insulation cover.