A noise absorption device having nose cone element for server

Abstract

A noise reduction device for a server with a nose cone element is disposed in a server rack. The server rack has at least one air-cooled cooling fan that generates a high-temperature and high-noise airflow. The device includes: a noise reduction component frame having at least one noise reduction component hermetically disposed behind the at least one air-cooled cooling fan in the server rack; each noise reduction component individually corresponds to the air outlet of each air-cooled cooling fan; and each noise reduction component includes: a nose cone structure component comprising a nose cone structure body and a nose cone body. A nose cone structure support is fixed to the nose cone structure body, and the nose cone is fixed to the nose cone structure support to reduce the turbulence generated by each air-cooled cooling fan; a noise reduction component body includes a constriction section duct, the nose cone structure component is fixed to the front end of the constriction section duct of the noise reduction component body and adjacent to the air outlet of each air-cooled cooling fan; and a sound-absorbing material layer is disposed on the wall of the constriction section duct to perform primary absorption of the noise generated by each air-cooled cooling fan.

Claims

1. A noise reduction device for a server with a nose cone element, configured in a server rack, the server rack having at least one air-cooled cooling fan generating a high-temperature and high-noise airflow, comprising: a noise reduction component frame having at least one noise reduction component hermetically disposed behind the at least one air-cooled cooling fan in the server rack, each noise reduction component individually corresponding to the air outlet of each air-cooled cooling fan, each noise reduction component comprising: a nose cone structure component including a nose cone structure body, a nose cone, and a nose cone structure support, the nose cone structure support being fixed to the nose cone structure body, and the nose cone being fixed to the nose cone structure support, for reducing the turbulence generated by each air-cooled cooling fan; A noise reduction component body includes a constriction section duct, the nose cone structure component is fixed to the front end of the constriction section duct of the noise reduction component body and adjacent to the air outlet of each air-cooled cooling fan; and a sound-absorbing material layer is disposed on the wall of the constriction section duct for primary absorption of noise generated by each air-cooled cooling fan.

2. The noise reduction device for a server with a nose cone element as described in claim 1, wherein each noise reduction component body further comprises: a parallel section pipe and an expanding section pipe, and includes: a first sound-cutting tube disposed at the first end of the parallel section pipe and adjacent to the contracting section pipe; and a second sound-cutting tube disposed at the tail end of the parallel section pipe and adjacent to the expanding section pipe, wherein the first sound-cutting tube and the second sound-cutting tube are spaced apart by a gap to form a resonant cavity pipe; wherein, The noise reduction component body, the first sound cutter tube, and the second sound cutter tube constitute a continuous structure of five pipe segments: the contraction section pipe, the first sound cutter tube pipe, the resonant cavity pipe, the second sound cutter tube pipe, and the expansion section pipe.

3. The noise reduction device for a server with a nose cone element as described in claim 2, wherein the structure of each noise reduction component body further includes: a third cut-off tube disposed in the expansion section pipe.

4. The noise reduction device for a server with a nose cone element as described in claim 2, wherein the walls of the first sound-cutting tube, the second sound-cutting tube, the contraction section pipe, the parallel section pipe and the expansion section pipe are processed to have a specific directional uneven surface.

5. A server noise reduction device with a nose cone element as described in claim 1, wherein the nose cone structure assembly further includes a plurality of nose wing structures formed on the nose cone.

6. The noise reduction device for a server with a nose cone element as described in claim 5, wherein the noise reduction component body has a plurality of airflow deflectors disposed at the location of the sound-absorbing material layer, the placement of which is coordinated with the nose cone structure to form an airflow channel and forms a fixed interval with the nose cone.

7. A noise reduction device for a server with nose cone elements as described in claim 6, wherein the nose structures and the air deflector systems are linear or curved.

8. The noise reduction device for a server with a nose cone element as described in claim 3, wherein the shapes of the first sound cutter tube and the second sound cutter tube are selected from: straight tube type or spiral tube type.

9. The noise reduction device for a server with a nose cone element as described in claim 2, wherein the diameter lengths of the first cut-off tube, the resonant cavity tube, and the second cut-off tube are respectively used to reduce noise for a first target audio frequency, a second target audio frequency, and a third target audio frequency.

10. A noise reduction device for a server with a nose cone element as described in claim 3, wherein the diameter of the third tone cutter is used to reduce noise corresponding to a fourth target audio frequency.

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