The single crystal manufacturing apparatus (10) further comprises a multi-purpose chamber (2) substitutable with the pull chamber.

The lower heat shield is able to telescope up into the intermediate heat shield to minimize the profile of the heat shield assembly located within a crystal growth chamber of the crystal puller.

CORN PEELING MACHINE has highly efficient air suction chamber inside to collect the corn cortex from peeling process.

Thus, wire swing is eliminated, and an inert gas can be supplied so as to reduce silicon oxide which deposits on the inner wall of the pull chamber.

CORN PEELING MACHINE has highly efficient air suction chamber inside to collect the corn cortex from peeling process.

At least a ring-shaped gas supply pipe is horizontally arranged in an upper section in the pull chamber, and a plurality of gas outlets are arranged at equal intervals on the gas supply pipe.

The gas outlets are formed between a drooping position and an outer horizontal position of the gas supply pipe, and a gas is permitted to be directly applied to an inner wall of the pull chamber from the gas outlets.