Perforated louvers to reduce noise leakage from a generator set enclosure
A genset includes a generator, an enclosure, and a plurality of louvers. The enclosure defines a space that is at least partially enclosed, with the generator in the space. The louvers extend from the enclosure inward to the enclosed space. Each of the louvers include a short leg and a long leg, the long leg coupled with the short leg at an angle to the short leg.
1 . A genset comprising:
a generator;
an enclosure defining a space that is at least partially enclosed, the generator in the space; and
a plurality of louvers extending from the enclosure into the space, each louver of the plurality of louvers comprising:
a short leg; and
a long leg longer than the short leg, the short leg extending from the long leg at an angle to the long leg, and wherein a first end of the long leg is coupled to an inner surface of the enclosure and extending inwards relative to the enclosure and the short leg is coupled to a second end of the long leg inwards of the first end of the long leg and extending inwards relative to the enclosure.
2 . The genset of claim 1 , further comprising a fastener configured to detachably couple the short leg to the long leg.
3 . The genset of claim 1 , further comprising a fastener that couples the long leg of a given louver of the plurality of louvers with the short leg of the given louver to allow for adjustment of the angle to a target angle to achieve a target pressure drop value along the given louver.
4 . The genset of claim 1 , wherein the short leg extends from the long leg such that the angle is greater than or equal to 60 degrees and less than or equal to 120 degrees.
5 . The genset of claim 1 , wherein the short leg comprises a perforated acoustic lining such that the short leg absorbs sound energy.
6 . The genset of claim 1 , wherein the long leg comprises a bottom side, the bottom side of the long leg including an acoustic lining, such that the bottom side of the long leg absorbs sound energy.
7 . The genset of claim 1 , wherein the long leg and the short leg comprise an acoustic lining having a thickness greater than or equal to 10 millimeters and less than or equal to 100 millimeters.
8 . The genset of claim 1 , wherein the short leg and the long leg are sized such that a ratio of a length of the short leg to a length of the long leg is greater than or equal to 0.3:1 and less than or equal to 0.8:1.
9 . The genset of claim 1 , wherein the short leg is removably coupled with the long leg to allow for adjustment of at least one of a noise level associated with the genset to a target noise level or a temperature associated with the genset to a target temperature.
10 . The genset of claim 1 , wherein a first end of the long leg is coupled with an inner surface of the enclosure, and a first end of the short leg extends from a second end of the long leg.
11 . The genset of claim 1 , wherein the short leg and the long leg are integrally formed.
12 . An enclosure for a genset, the enclosure comprising:
a housing defining a space that is at least partially enclosed;
a plurality of openings formed on at least one side of the housing; and
a plurality of louvers coupled to the at least one side of the housing, each louver of the plurality of louvers comprising:
a first leg; and
a second leg longer than the first leg, the second leg coupled with the first leg at an angle to the first leg, and wherein a first end of the second leg is coupled to an inner surface of the enclosure and extending inwards relative to the enclosure and the first leg is coupled to a second end of the second leg inwards of the first end of the second leg and extending inwards relative to the enclosure.
13 . The enclosure of claim 12 , wherein each louver of the plurality of louvers is attached to the at least one side of the housing between a corresponding first opening of the plurality of openings.
14 . The enclosure of claim 12 , wherein each louver of the plurality of louvers includes an acoustic lining on at least one of the first leg or the second leg, such that each louver of the plurality of louvers absorb sound energy.
15 . The enclosure of claim 12 , wherein the louvers extend from the enclosure into the space at an upward angle to the at least one side of the enclosure.
16 . The enclosure of claim 12 , wherein a ratio of a length of the first leg to a length of the second leg is greater than or equal to 1:2 and less than or equal to 3:4.
17 . An airflow system for a genset, the airflow system comprising:
an enclosure;
a fan configured to drive air into the enclosure; and
a plurality of louvers coupled to the enclosure, arranged in a louver assembly such that each louver of the plurality of louvers is structured to form a first path for the air driven by the fan to be directed in to the enclosure, and a second path for sound to be directed, from inside the enclosure, along the louver assembly in multiple directions, out of the enclosure, wherein each of the first path and the second path further comprise defining a path which restricts direct movement into and out of the enclosure, wherein each louver includes a short leg coupled to a long leg, the long leg being longer than the short leg, and wherein a first end of the long leg is coupled to an inner surface of the enclosure and extending inwards relative to the enclosure and the short leg is coupled to a second end of the long leg inwards of the first end of the long leg and extending inwards relative to the enclosure.
18 . The airflow system of claim 17 , wherein:
one side of the long leg is configured to reflect sound and an other side of the long leg including a sound absorptive material; and
the short leg includes two sides each including a sound absorptive material.
19 . The airflow system of claim 17 , wherein:
the plurality of louvers includes a first louver and a second louver below the first louver, each of the first louver and the second louver comprising a short leg and a long leg longer than the short leg; and
a first vertical length between a highest point of the short leg of the first louver and a lowest point of the short leg of the first louver is greater than a second vertical length between a highest point of the short leg of the first louver and a highest point of the short leg of the second louver.
20 . The airflow system of claim 17 , wherein a side of each of the plurality of louvers facing the second path comprises a sound-absorptive material.