Patent ID: 9460946
Filing Date: 2016-10-04
CPC Classification: C23C,H01L

Claim Text:
1. A substrate processing apparatus, comprising: a heating part including a heating wire arranged on the inner circumferential surface of a cylindrical-shaped heat insulator; a heat-insulating part spaced apart from the heating part to form a cylindrical space that is provided outside the heating part and inside the heat-insulating part; a top plate provided above the heating part and the heat-insulating part; a cooling gas introduction portion formed inside the top plate at a top of the heat-insulating part to surround an upper portion of the heating part, wherein an inner circumferential surface of the cooling gas introduction portion is formed at an outer position from an inner circumferential surface of the cylindrical space; a passage opening and a passage hole are provided below the cooling gas introduction portion to couple the cooling gas introduction portion and the cylindrical space, wherein the passage hole is inclined inwardly to connect the passage opening and the cylindrical space; a cooling gas discharge portion including a gas flow passage horizontally extending from the center of the top plate to a side surface of the top plate; and a plurality of gas outlets which allow the cylindrical space to be in communication with an inner space from the heating wire; wherein the cooling gas introduction portion and the cooling gas discharge portion are vertically aligned such that a horizontal plane passes through the cooling gas introduction portion and the cooling gas discharge portion.