Acoustic attenuation in data storage enclosures
To provide enhanced operation of data storage devices and systems, various systems and apparatuses are provided herein. In a first example, a data storage assembly includes an enclosure configured to house at least one data storage device and a fan assembly configured to provide airflow within the enclosure to ventilate the at least one data storage device. A plurality of acoustic waves emanate into the data storage device from one or more fans of the fan assembly during operation. An acoustic attenuation device is positioned within the enclosure and configured to deflect at least a first portion of the plurality of acoustic waves away from the at least one data storage device and absorb a portion of acoustic wave energy of at least a second portion of the plurality of acoustic waves.
1. A data storage system comprising:
a data storage device;
a housing enclosing the data storage device, the housing having a first opening on a first side and a second opening on a second side opposite the first side;
a fan assembly coupled to the housing and configured to draw an airflow through the housing from the first side to the second side; and
an acoustic attenuation device enclosed within the housing between the data storage device and the fan assembly and comprising:
a first corrugated sheet having corrugations formed on a first side of the first corrugated sheet, wherein the corrugations of the first corrugated sheet comprise:
a plurality of peaks, each peak extending along a first direction; and
a plurality of troughs, each trough extending along the first direction; and
a second corrugated sheet separated from the first corrugated sheet along a second direction orthogonal to the first direction, wherein the second corrugated sheet has corrugations formed on a first side of the second corrugated sheet, wherein the corrugations of the second corrugated sheet comprise;
a plurality of peaks, each peak extending along a third direction orthogonal to the first direction and orthogonal to the second direction; and
a plurality of troughs, each trough extending along the third direction:
wherein the first corrugated sheet further has an opening formed therein configured to allow at least a portion of the airflow to pass therethrough from a second side of the first corrugated sheet opposite the first side of the first corrugated sheet; and
wherein the second corrugated sheet further has an opening formed therein configured to allow the at least a portion of the airflow to pass therethrough from the first side of the second corrugated sheet to a second side of the second corrugated sheet opposite the first side of the second corrugated sheet.
2. The data storage system of claim 1 , wherein the first and second corrugated sheets comprise die-cut corrugated sheets coupled together to form a three-dimensional structure.
3. The data storage system of claim 2 , wherein the opening formed in the first corrugated sheet is offset from the opening formed in the second corrugated sheet in both the first direction and the third direction to cause the airflow to pass through the acoustic attenuation device along a non-linear path.
4. The data storage system of claim 2 , wherein the first side of the first corrugated sheet faces the first side of the second corrugated sheet.
5. The data storage system of claim 1 , wherein:
the data storage device impedes the airflow through the housing by a first flow impedance value; and
the acoustic attenuation device impedes the airflow through the housing by a second flow impedance value.
6. The data storage system of claim 5 , wherein the second flow impedance value differs relative to the first flow impedance value.
7. The data storage system of claim 6 , wherein the second flow impedance value is less than the first flow impedance value.
8. An acoustic attenuation device comprising:
a first corrugated sheet having corrugations formed on a first side of the first corrugated sheet, wherein the corrugations of the first corrugated sheet comprise:
a plurality of peaks, each peak extending along a first direction; and
a plurality of troughs, each trough extending along the first direction; and
a second corrugated sheet separated from the first corrugated sheet along a second direction orthogonal to the first direction, wherein the second corrugated sheet has corrugations formed on a first side of the second corrugated sheet, wherein the corrugations of the second corrugated sheet comprise:
a plurality of peaks, each peak extending along a third direction orthogonal to the first direction and orthogonal to the second direction; and
a plurality of troughs, each trough extending along the third direction;
wherein the first corrugated sheet further has an opening formed therein configured to allow at least a portion of airflow to pass therethrough from a second side of the first corrugated sheet opposite the first side of the first corrugated sheet; and
wherein the second corrugated sheet further has an opening formed therein configured to allow the at least a portion of the airflow to pass therethrough from the first side of the second corrugated sheet to a second side of the second corrugated sheet opposite the first side of the second corrugated sheet.
9. The acoustic attenuation device of claim 8 , wherein the first and second corrugated sheets comprise die-cut corrugated sheets coupled together to form a three-dimensional structure.
10. The acoustic attenuation device of claim 9 , wherein the opening formed in the first corrugated sheet is offset from the opening formed in the second corrugated sheet in both the first direction and the third direction to cause the airflow to pass through the acoustic attenuation device along a non-linear path.
11. The acoustic attenuation device of claim 9 , wherein the first side of the first corrugated sheet faces the first side of the second corrugated sheet.
12. The acoustic attenuation device of claim 8 , wherein:
the airflow through the housing is impeded by a data storage device by a first flow impedance value; and
the acoustic attenuation device impedes the airflow through the housing by a second flow impedance value.
13. The acoustic attenuation device of claim 12 , wherein the second flow impedance value differs relative to the first flow impedance value.
14. The acoustic attenuation device of claim 13 , wherein the second flow impedance value is less than the first flow impedance value.
15. An electronics enclosure comprising:
a chassis to hold at least a data storage device, the chassis having a first opening on a first side and a second opening on a second side opposite the first side;
a fan assembly coupled to the chassis and configured to draw an airflow through the chassis from the first side to the second side; and
an attenuation device enclosed within the chassis and comprising:
a first corrugated sheet having corrugations formed on a first side of the first corrugated sheet, wherein the corrugations of the first corrugated sheet comprise:
a plurality of peaks, each peak extending along a first direction; and
a plurality of troughs, each trough extending along the first direction; and
a second corrugated sheet separated from the first corrugated sheet along a second direction orthogonal to the first direction, wherein the second corrugated sheet has corrugations formed on a first side of the second corrugated sheet, wherein the corrugations of the second corrugated sheet comprise:
a plurality of peaks, each peak extending along a third direction orthogonal to the first direction and orthogonal to the second direction; and
a plurality of troughs, each trough extending along the third direction;
wherein the first corrugated sheet further has an opening formed therein configured to allow at least a portion of the airflow to pass therethrough from a second side of the first corrugated sheet opposite the first side of the first corrugated sheet; and
wherein the second corrugated sheet further has an opening formed therein configured to allow the at least a portion of the airflow to pass therethrough from the first side of the second corrugated sheet to a second side of the second corrugated sheet opposite the first side of the second corrugated sheet.
16. The electronics enclosure of claim 15 , wherein the first and second corrugated sheets comprise die-cut corrugated sheets coupled together to form a three-dimensional structure.
17. The electronics enclosure of claim 16 , wherein the opening formed in the first corrugated sheet is offset from the opening formed in the second corrugated sheet in both the first direction and the third direction to cause the airflow to pass through the acoustic attenuation device along a non-linear path.
18. The electronics enclosure of claim 16 , wherein the first side of the first corrugated sheet faces the first side of the second corrugated sheet.
19. The electronics enclosure of claim 15 , wherein:
the airflow is impeded by a first flow impedance value; and
the attenuation device impedes the airflow through the housing by a second flow impedance value.
20. The electronics enclosure device of claim 19 , wherein the second flow impedance value differs relative to the first flow impedance value.