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US 2006/0037812 A1Published application
Acoustic fluid machine
AssigneeAnest Iwata Corporation
InventorsMasaaki Kawahashi, Tamotsu Fujioka, Masayuki Saito
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Abstract
An acoustic fluid machine such as an air compressor comprises an acoustic resonator, a valve device and a piston. Air is sucked into the resonator through the valve device at one end of the resonator. The piston at the other end of the resonator is reciprocated by an actuator to compress the air in the resonator to cause resonance to increase pressure of the air significantly. The inner surface of the resonator is suitably curved to comply with the formula of a half-period cosine function.
Claims3
An acoustic fluid machine comprising:
- an acoustic resonator;
- a valve device comprising a suction chamber for sucking fluid from outside and a discharge chamber for discharging the fluid from the acoustic resonator at a first end of the acoustic resonator;
- and
- an actuator comprising a piston at a second end of the acoustic resonator, said piston being reciprocated to generate resonance in the acoustic resonator to greatly increase pressure of the fluid, an inner surface of the acoustic resonator being formed by a curve in which variation rate of a cross-sectional area is zero at the first and second ends of the acoustic resonator, said curve gradually increasing and decreasing at substantially the same gradients between the first and second ends.
1 more element
Dependencies are inferred from the claim text.