Patent ID: 9707493
Date: 2017-07-18
CPC Classifications: B01D,F04B

Claim:
1. A cold trap provided between a vacuum chamber and a vacuum pump for the vacuum chamber, comprising: a cold panel located in an exhaust passage from an exhaust port of the vacuum chamber to an intake port of the vacuum pump, the exhaust passage extending from an inlet opening to an outlet opening of the exhaust passage; and a cold panel chamber comprising an entrance that connects the exhaust passage to the exhaust port of the vacuum chamber, the entrance comprising an inlet flange for mounting the cold panel chamber to the vacuum chamber to the cold trap, and an exit that connects the exhaust passage to the intake port of the vacuum pump, the exit comprising an outlet flange for mounting the cold panel chamber to the vacuum pump to the cold trap, wherein the inlet opening is formed in the inlet flange such that the inlet opening is eccentric with respect to the inlet flange center and the outlet opening is formed in the outlet flange such that the outlet opening is eccentric with respect to the outlet flange.