Variable-volume injection valve

摘要

Variable-volume injection valves include a stator and a rotor. The stator has a first port, a second port, and a contact surface with a groove therein. The first port opens into the stator groove. The rotor has a contact surface with a groove therein. The contact surface of the rotor is urged against the contact surface of the stator such that the rotor groove opposes the stator groove with one end of the rotor groove overlapping the stator groove and the opposite end of the rotor groove overlapping the second port of the stator. The overlapping grooves of the rotor and stator provide a fluidic channel between the first and second ports of the stator. The rotor is movable with respect to the stator in order to vary a length of overlap between their overlapping grooves.

主权项

1. A variable-volume injection valve comprising:
a stator having a first port, a second port, and a contact surface with a groove therein, the first port opening into the stator groove; and a rotor having a contact surface with a groove therein, the contact surface of the rotor being urged against the contact surface of the stator such that the rotor groove opposes the stator groove with one end of the rotor groove overlapping the stator groove and the opposite end of the rotor groove overlapping the second port of the stator, the overlapping grooves of the rotor and stator providing a fluidic channel between the first and second ports of the stator, the rotor being movable with respect to the stator to vary a volume of the fluidic channel between the first and second ports of the stator by varying a length of overlap between the overlapping rotor and stator grooves.