Heat treatment device
AssigneesIHI Corporation, IHI Machinery and Furnace Co., Ltd.
InventorKazuhiko Katsumata
Life of this patent
Estimating the term…
Abstract
A heat treatment device includes: a heat treatment chamber which accommodates an object to be treated; a cooling gas supply unit which supplies a cooling gas into the heat treatment chamber; a cooling gas circulation unit which circulates the cooling gas in the heat treatment chamber; and a gas purge unit which gas-purges, with an inert gas, a portion in which there is a possibility of mixing of the cooling gas supplied into the heat treatment chamber and an oxygen gas, in which the cooling gas supply unit supplies a hydrogen gas into the heat treatment chamber as the cooling gas.
Claims9
A heat treatment device comprising:
- a heat treatment chamber which accommodates an object to be treated;
- a cooling gas supply unit which supplies a cooling gas into the heat treatment chamber;
- a cooling gas circulation unit which includes an impeller which is provided in the heat treatment chamber, a rotary shaft which passes through a wall portion of the heat treatment chamber and is connected to the impeller, and a motor which is provided outside the heat treatment chamber and is configured to rotate the rotary shaft, and circulates the cooling gas in the heat treatment chamber, the motor having a housing which accommodates a rotor and a stator of the motor, and a gas introduction part and a gas exhaust part which are provided at the housing of the motor;
- and
- a gas purge unit which supplies an inert gas to the gas introduction part and gas-purges, with the inert gas, at least an inside of the housing of the motor,
- wherein the cooling gas supply unit supplies a hydrogen gas into the heat treatment chamber as the cooling gas.
Dependencies are inferred from the claim text.