Patent ID: 8282028
Filing Date: 2012-10-09
Classification: B05B

Abstract:
1. An electrostatically atomizing device comprising: a tubular atomization nozzle having an emitter electrode at its tip; a supply tank being configured to contain a volume of liquid and supply the liquid to said atomization nozzle; a high-voltage source being configured to apply a high voltage to the emitter electrode in order to electrostatically charge the liquid supplied thereto for generating a mist of charged minute liquid particles from the tip of the emitter electrode; and a pressure regulating means configured to regulate a pressure applied to the liquid at the tip of said atomization nozzle, wherein said pressure regulating means comprises: a replenishing means for replenishing the liquid to said supply tank; a controller for actuating said replenishing means to control a replenishment quantity of the liquid to said supply tank; and an operation selection switch for selectively operating the controller in one of a first operation mode and a second operation mode, wherein said controller is configured to keep a liquid level of said supply tank to a first liquid level in said first operation mode, whereby the liquid in the tank maintains application of a first water head pressure supplied to the atomization nozzle, wherein said controller is configured to keep the liquid level of said supply tank to a second liquid level in said second operation mode, and said second liquid level of said supply tank is higher than said first liquid level of said supply tank, whereby the liquid in the tank maintains application of a second water head pressure supplied to the atomization nozzle, and wherein said second water head pressure is higher than said first water head pressure, said atomization nozzle including a main tube which is provided at its tip with said emitter electrode, said main tube being configured to transmit the water head pressure to the tip of said emitter electrode without applying pressure when the liquid of said tank generates the water head pressure, said main tube having one end, said one end of said main tube being connected to said tank such that said one end is located below the first liquid level and the second liquid level.