Gas pulsation dampener for positive displacement blowers and compressors
AssigneeAir Products and Chemicals, Inc.
InventorsJack Lewis Stolz, Mark Allen Story
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Abstract
A gas pulsation and noise reduction system for positive displacement blowers and compressors. A resonator is placed in one or both of the inlet and outlet conduits of the blower or compressor. The resonator is sized to damp out gas pulsations by providing a reflected wave 180.degree. out of phase with the gas pulsation in the associated conduit. Multiple resonators can be used in one or both conduits to dampen gas pulsations of different frequencies.
Claims7
A method for dampening flow pulsations and resulting noise from operating a water-injected positive displacement apparatus comprising the steps of:
- determining the frequency of gas pulsation produced by said apparatus;
- installing a Helmholtz type resonator in an outlet conduit of said apparatus, said resonator tuned to create a reflected pressure peak 180.degree. out of phase with a gas pulsation in said conduit containing said resonator;
- and
- installing a silencer-separator downstream of said resonator said silencer-separator adapted to separate out water carried over in a gaseous effluent from said apparatus and dampen high frequency noise carried over from said apparatus.
An apparatus for dampening flow pulsation and resulting noise produced in an adsorptive separation process comprising in combination:
- a water injected positive displacement blower having an inlet conduit and an outlet conduit;
- a Helmholtz type resonator installed in said outlet conduit, said resonator tuned to create a reflected pressure peak 180.degree. out of phase with a gas pulsation in said conduit;
- and
- a silencer-separator downstream of said resonator said silencer-separator adapted to separate out water carried over in a gaseous effluent from said blower and dampen high frequency noise carried over from said blower.
Dependencies are inferred from the claim text.