Patent ID: 9579664
Date: 2017-02-28
CPC Classifications: B03C,H01T

Claim:
1. A cleaning device for cleaning an air-ionizing part of an electrode, wherein the air-ionizing part of the electrode comprises a needle-tip or a thin wire, said device comprising: a cleaning member arranged to be in physical contact with a circumference of the needle-tip or the thin-wire, the air-ionizing part of the electrode and the cleaning member being arranged to slide relative to each other; and an actuator arranged to activate a relative motion between the air-ionizing part of the electrode and the cleaning member, wherein the cleaning member comprises a foil containing at least one perforation through which the air-ionizing part of the electrode slides, wherein the at least one perforation is substantially closed by having edges in contact with each other when the needle-tip or the thin wire does not protrude through the at least one perforation, and wherein a shearing force applied by the cleaning member to the needle-tip or the thin-wire is changed by selecting a thickness of the foil in a range of 25-100 μm.