NOISE ATTENUATION DEVICE AND FLUID COUPLING COMPRISED THEREOF
First Claim
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1. A noise attenuation device, comprising:
- a plurality of stacked plates forming channels to allow a working fluid to flow from an upstream side to a downstream side through the plurality of stacked plates, the plurality of stacked plates comprising a first plate having openings in a first pattern and a pair of second plates comprising an upstream plate on the upstream side of the first plate and a downstream plate on the downstream side of the first plate, the upstream plate and the downstream plate having openings in a second pattern that is different from the first pattern, wherein the upstream plate has a side proximate the first plate that is different from the side of the downstream plate that is proximate the first plate.
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Abstract
Embodiments of a noise attenuation device comprise a plurality of stacked plates that form channels to reduce energy in a flow of working fluid that transits the noise attenuation device. In one embodiment, the stacked plates include plates having openings in different patterns. Orientation of the plates align the patterns in a housing to form the channels. In one example, the plates are disposed in a fluid coupling (e.g., a valve and/or flow regulator) that includes a throttling element. The plates are spaced apart from the throttling element, thereby permitting the working fluid to flow through all of the channels whether the throttling element is fully or partially open.
61 Citations
20 Claims
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1. A noise attenuation device, comprising:
a plurality of stacked plates forming channels to allow a working fluid to flow from an upstream side to a downstream side through the plurality of stacked plates, the plurality of stacked plates comprising a first plate having openings in a first pattern and a pair of second plates comprising an upstream plate on the upstream side of the first plate and a downstream plate on the downstream side of the first plate, the upstream plate and the downstream plate having openings in a second pattern that is different from the first pattern, wherein the upstream plate has a side proximate the first plate that is different from the side of the downstream plate that is proximate the first plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A noise attenuation device, comprising:
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a first plate having openings in a first pattern; and a second plate having openings in a second pattern that is different from the first pattern, wherein the first pattern and the second pattern form channels to allow a working fluid to flow from an upstream side to a downstream side through the first plate and the second plate, and wherein the first plate and the second plate have a form factor with a peripheral edge forming an elongated peripheral surface and a curvilinear surface having ends terminating proximate a first end and a second end of the elongated peripheral surface. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A fluid coupling, comprising:
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a throttling element; and a noise attenuation device spaced apart from the throttling element, the noise attenuation device comprising a plurality of stacked plates forming channels to allow a working fluid to flow from an upstream side to a downstream side through the plurality of stacked plates, the plurality of stacked plates comprising a first plate having openings in a first pattern and a pair of second plates comprising an upstream plate on the upstream side of the first plate and a downstream plate on the downstream side of the first plate, the upstream plate and the downstream plate having openings in a second pattern that is different from the first pattern, wherein the upstream plate has a side proximate the first plate that is different from the side of the downstream plate that is proximate the first plate. - View Dependent Claims (18, 19, 20)
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Specification