Patent ID: 6669762
Filing Date: 2003-12-30
Classification: B01D

Abstract:
An air trap for liquid circulation line, comprising:a housing having a width dimension which is substantially constant along a length of the housing, the housing being provided at a proximal end thereof with a liquid inlet for receiving a liquid from the liquid circulation line and at a distal end thereof with a liquid outlet for the liquid flowing out of the liquid circulation line; a container arranged in the housing and having a width dimension which is substantially constant along a length of the container, the width dimension of the container being smaller the width dimension of the housing thereby forming a space between the housing and the container, the space surrounding the container and extending from the proximal end to the distal end of the housing; the container communicating with the liquid inlet at a proximal end thereof and provided with a plurality of windows spaced at intervals along the length thereof; an air reservoir arranged in the container; and a hydrophilic filter, which permits a liquid to permeate but does not permit bubbles to permeate and which is arranged in the air reservoir to separate an upstream side of the liquid circulation line from a downside of the circulation line, the filter being so arranged as to cover the plurality of windows of the container.