Patent ID: 9392680
Filing Date: 2016-07-12
CPC Classification: A45D,A61L,B08B,C01B,C02F,H05H

Claim Text:
1. A plasma generator, comprising: a liquid storage section that stores a liquid containing water; a gas storage section that stores a gas; a partition provided with a gas passage to introduce the gas in the gas storage section into the liquid storage section, and separating the liquid storage section from the gas storage section; a first electrode provided in the gas storage section; a second electrode separated from the first electrode and provided in a manner such that at least a portion coupled with the first electrode is in contact with the liquid in the liquid storage section; a gas supply unit that supplies a gas containing oxygen to the gas storage section so that the gas in the gas storage section is delivered under pressure into the liquid storage section via the gas passage; a plasma power source that applies a predetermined voltage between the first electrode and the second electrode to cause electric discharge between the first electrode and the second electrode, and thereby convert the gas introduced into the gas storage section into plasma; a voltage controller that controls the voltage applied by the plasma power source depending on a condition of the liquid in the liquid storage section, and a sensing member that senses an impedance of the liquid in the liquid storage section at a fixed time interval, wherein the voltage controller controls the plasma power source to apply a higher voltage between the first electrode and the second electrode as the impedance of the liquid sensed by the sensing member increases, and controls the plasma power source to apply a lower voltage between the first electrode and the second electrode as the impedance of the liquid sensed by the sensing member decreases.