Patent ID: 7481861
Filing Date: 2009-01-27
Classification: B01D

Abstract:
1. A liquid trap device for gas, comprising: a trap housing having a gas inlet and a gas outlet at an upper end; and a liquid filter disposed in the trap housing and provided with an upper end wall having an opening communicating with the gas inlet, a lower end wall arranged below the upper end wall, and a cylindrical filter element vertically extending to provide a connection between the upper end wall and the lower end wall, the gas outlet being opened in the trap housing but outside the liquid filter so that, when gas flowing from the gas inlet to the gas outlet passes through the filter element, liquid contained in the gas is trapped by the filter element, wherein an inflow guide tube is disposed in the filter element, the inflow guide tube having a uniform path area and extending from the opening to the lower end wall so as to guide gas flowing into the gas inlet into the filter element; and wherein a distance between a lower end of the inflow guide tube and the lower end wall is set at 20 mm or less.