Patent ID: 8959932
Filing Date: 2015-02-24
Classification: F04B

Abstract:
1. A cryopump apparatus, comprising: a heat shield container defining a heat shield chamber and having an opening into the heat shield chamber and a heat shield container bottom portion facing the opening and disposed apart therefrom in a height-wise direction; a louver unit connected to the heat shield container and extending across the opening in a width-wise direction being perpendicular to the height-wise direction; a cryopump cabinet defining a cryopump chamber and having an inlet port into the cryopump chamber and a cryopump cabinet bottom portion facing the inlet port, the inlet port sized to receive the heat shield container and the louver unit connected thereto, the louver unit disposed adjacent to and extending substantially across the inlet port, the heat shield container bottom portion and the cryopump cabinet bottom portion being disposed apart from yet adjacent to one another; a cryogenic refrigerator; and a cryopanel structure disposed in the heat shield chamber between the louver unit and the heat shield container bottom portion, the cryopanel structure including: wherein each one of the plurality of cryopanel members is connected to the intermediate member at one of the flat plate edges to project upwardly from the intermediate member towards the louver unit, wherein each one of the plurality of cryopanel members is trapezoidal shaped as viewed in elevation with one of the flat plate edges having a first width and a remaining one of the flat plate edges having a second width being smaller than the first width, each one of the plurality of cryopanel members being connected to the intermediate member along the flat plate edge having the second width.