Patent ID: 7175117

Claim:
A substance-atomizing apparatus comprising: a pump member having: a cylinder opening at one end thereof and closing at the other end thereof; a pipe through which a raw material fluid is introduced from a charge vessel into the cylinder; and a piston reciprocally moved by a drive device in the cylinder to pressurize the raw material fluid in the cylinder; and a generator member inserting the raw material fluid pressurized in the pump member into a hole portion formed therein to atomize a substance included in the raw material fluid according to a nozzle character of the hole portion, wherein a pressure chamber is formed between the piston and a closed end of the cylinder, an intake to which the pipe opens at one end thereof is formed on a cylinder side surface of the pressure chamber, an outlet is formed on the closed end of the cylinder, the outlet is closed and the raw material fluid is received from the charge vessel into the pressure chamber through the intake in a first stroke of the piston, the raw material fluid is sent from the pressure chamber into the charge vessel through the intake in the first half of a second stroke of the piston, the intake is directly closed by a side surface of the piston and the raw material fluid is sent from the pressure chamber into the generator member through the outlet in the last half of the second stroke of the piston.