Revolving valve for feeding air pulses to a resonance tube for generating low-frequency sound and a method for feeding these pulses in an optimal way
AssigneeTallstam AB
InventorMats Olsson
Life of this patent
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Abstract
A method for feeding pressurized air pulses to a quarter wave resonance tube, for generating a standing low-frequency sound wave in said quarter wave resonance tube. The method entails that the pressurized air pulses supply maximum input power to said standing low-frequency sound wave by feeding said pressurized air pulses only during the time intervals of the oscillation cycle when the air pressure in said rear end of the quarter wave resonance tube, is positive. Also disclosed is a revolving valve, for feeding pressurized air pulses to a quarter wave resonance tube, for generating a standing low-frequency sound wave in said quarter wave resonance tube.
Claims10
A method for feeding pressurized air pulses to a rear end of a quarter wave resonance tube for generating a standing low-frequency sound wave in said quarter wave resonance tube, the method comprising:
- feeding pressurized air through at least one through hole of a revolving valve consisting of a stationary outer cylinder and an inner revolving cylinder,
- wherein, as the inner cylinder revolves, pressurized air passes through said at least one through hole during time intervals of the oscillation cycles of said standing low-frequency sound wave when the air pressure in said rear end of the quarter wave resonance tube is positive, and pressurized air is blocked from passing through said through hole during the time intervals of the oscillation cycles of said standing low-frequency sound wave when the air pressure in said rear end of the quarter wave resonance tube is negative, thereby supplying maximum input power to said standing low-frequency sound wave.
A revolving valve consisting of:
- a stationary outer cylinder, and
- an inner revolving cylinder with at least one through hole for supplying pressurized air pulses to a rear end of a quarter wave resonance tube for generating a standing low-frequency sound wave in said quarter wave resonance tube,
- wherein, as the inner cylinder revolves, pressurized air passes through said at least one through hole during time intervals of the oscillation cycles of said standing low-frequency sound wave when the air pressure in said rear end of the quarter wave resonance tube is positive, and pressurized air is blocked from passing through said through hole during the time intervals of the oscillation cycles of said standing low-frequency sound wave when the air pressure in said rear end of the quarter wave resonance tube is negative, thereby supplying maximum input power to said standing low-frequency sound wave.
Dependencies are inferred from the claim text.