Compressed gas motor and lavage system

摘要

A compressed-gas motor has a cylindrical inner chamber closed gas-tight at a first base surface, and a piston arranged so as to be movable along the cylinder axis in the cylindrical inner chamber. A first opening feeds a compressed gas into the inner chamber, and a second opening discharges a gas from inside the inner chamber. The openings are arranged in the cylinder casing of the cylindrical inner chamber, wherein the first opening is arranged between the second opening and the closed first base surface. The first opening is closable by a first piston part and the second opening by a second piston part. The compressed-gas motor has a resetting device which exerts a force on the piston in the direction of the first base surface of the cylindrical inner chamber if the second piston part does not completely close the second opening.

主权项

1. A compressed gas motor, for operating a lavage system, comprising
a cylindrical internal space closable in gas-tight manner at least at one first base surface; at least one plunger arranged in the cylindrical internal space such as to be mobile along the cylinder axis and ending tightly against the cylindrical internal space; a plunger rod connected to the at least one plunger and projecting from the cylindrical internal space beyond a second base surface; a first opening for supplying a compressed gas into the cylindrical internal space; and a second opening for discharging a gas from the inside of the cylindrical internal space; wherein the first and second openings are arranged in a cylinder jacket of the cylindrical internal space, whereby the first opening is arranged between the second opening and the closed first base surface; wherein the plunger comprises a first plunger part and a second plunger part that are connected to each other; whereby the first plunger part comprises at least one passage and/or forms at least one passage between the first plunger part and the cylinder wall of the cylindrical internal space; and the second plunger part closes the inside of the cylindrical internal space such as to be tight, whereby at least one passage of the first plunger part connects an intermediate space between the first and the second plunger part to an internal space region between the closed first base surface and the first plunger part; and whereby the first opening is closable through the first plunger part and the second opening is closable through the second plunger part; and the compressed gas motor comprises a restoring facility that exerts, at least for part of the time, a force on the plunger in a direction of the first base surface of the cylindrical internal space when the second plunger part does not close the second opening completely.