Noise suppression enclosure for an engine
First Claim
1. A noise reduction enclosure (10) adapted for use with an engine (14);
- said noise reduction enclosure (10) comprising;
a housing (32) having a generally rectangular shape surrounding the engine (14) and being divided into a duct portion (54) and an engine portion (56) defining an engine compartment (57), said housing (32) further including a plurality of formed sheet material skins (34) attached one to another, said sheet material skins (34) being relatively thin and at least a portion thereof having an inlet opening (50) and an outlet opening (52) therein, each of said plurality of skins (34) having an interior surface of which at least a portion of the interior surfaces are adjacent the engine (14);
a damping material (100) and an absorptive material (102) being fixedly attached to at least a portion of the interior surfaces;
an outlet duct (88) being positioned in the duct portion (54) having a preestablished length through which the cooling medium (82) flows, said outlet duct (88) interconnecting the outlet opening (52) through which said cooling medium (82) exits and the engine compartment (57);
an inlet duct (84) being positioned in the duct position (54) between the outlet duct (88) and the engine compartment (57) having a preestablished length through which said cooling medium (82) flows, said inlet duct (84) interconnecting the inlet opening (50) through which said cooling medium (82) enters and the engine compartment (57); and
said preestablished length of said outlet duct (88) being a greater length than the preestablished length of the inlet duct (84).
1 Assignment
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Accused Products
Abstract
Most existing noise reduction enclosures used with engines and engine driven equipment have failed to meet the reduced noise emission requirements of today and of the future. A few of the present enclosures meet the reduced noise emission requirements of today and of the future but are extremely expensive to purchase and are large bulky structures. The subject enclosure (10) is reasonably priced and provides an enclosure which is effective in reducing the noise emitted therefrom. The enclosure (10) includes a housing (32) having a generally rectangular configuration and being divided into an engine portion (56) defining an engine compartment (57) and a duct portion (54). The outlet ducts (88) having a length greater than the inlet ducts (84). To further enhance the noise reduction of the enclosure (10) a plurality of dynastic hardware is attached to the housing (32).
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Citations
40 Claims
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1. A noise reduction enclosure (10) adapted for use with an engine (14);
- said noise reduction enclosure (10) comprising;
a housing (32) having a generally rectangular shape surrounding the engine (14) and being divided into a duct portion (54) and an engine portion (56) defining an engine compartment (57), said housing (32) further including a plurality of formed sheet material skins (34) attached one to another, said sheet material skins (34) being relatively thin and at least a portion thereof having an inlet opening (50) and an outlet opening (52) therein, each of said plurality of skins (34) having an interior surface of which at least a portion of the interior surfaces are adjacent the engine (14); a damping material (100) and an absorptive material (102) being fixedly attached to at least a portion of the interior surfaces; an outlet duct (88) being positioned in the duct portion (54) having a preestablished length through which the cooling medium (82) flows, said outlet duct (88) interconnecting the outlet opening (52) through which said cooling medium (82) exits and the engine compartment (57); an inlet duct (84) being positioned in the duct position (54) between the outlet duct (88) and the engine compartment (57) having a preestablished length through which said cooling medium (82) flows, said inlet duct (84) interconnecting the inlet opening (50) through which said cooling medium (82) enters and the engine compartment (57); and said preestablished length of said outlet duct (88) being a greater length than the preestablished length of the inlet duct (84). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- said noise reduction enclosure (10) comprising;
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14. An engine (14) having a noise reduction enclosure (10) positioned therearound, said engine (14) including a cooling system (60) having a heat exchanger (62) connected to the engine (14) for dissipating the heat generated by said engine (14), said heat exchanger (62) having a coolant therein being circulated through the heat exchanger (62) and the engine (14) by a circulating means (66), and a fan (72) drivingly connected to said engine (14) forcing a cooling medium (82) through the heat exchange (62) to dissipate heat from the cooling flowing therethrough;
- said noise reduction enclosure (10) comprising;
a housing (32) having a generally rectangular shape surrounding the engine (14), said housing (32) including an engine portion (56) defining an engine compartment (57) and a plurality of sheet material skins (34) each having an interior surface thereon of which at least a portion of the interior surfaces are adjacent the engine (14); a damping material (100) and an absorptive material (102) being fixedly attached to at least a portion of the interior surfaces; said housing (32) further including an inlet opening (50) and an outlet opening (52) within at least a portion of the sheet material skins (32); an outlet duct (88) being positioned in the duct portion (57) having a preestablished length through which said cooling medium (82) flows, said outlet duct (88) interconnecting the outlet opening (52) through which said cooling medium (82) exits and the engine compartment (57); an inlet duct (84) being positioned in the duct portion (54) between the outlet duct (88) and the engine compartment (57) having a preestablished length through which said cooling medium (82) flows, said inlet duct (84) interconnecting the inlet opening (50) through which said cooling medium (82) enters and the engine compartment (57); and said preestablished length of said outlet duct (88) being a greater length than the preestablished length of said inlet duct (84). - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- said noise reduction enclosure (10) comprising;
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28. A noise reduction enclosure 10) adapted for use with an engine (14), said engine (14) emitting noise and having a cooling medium (82) flowing therearound;
- said noise reduction enclosure (10) comprising;
a housing (32) having an engine portion (56) defining an engine compartment (57) and being formed from a plurality of sheet material skins (34), said housing (32) having a generally rectangular shape surrounding the engine (14), each of said plurality of sheet material skins (34) having an interior surface of which at least a portion of the interior surfaces are adjacent the engine (14); a damping material (100) and an absorption material (102) being fixedly attached to at least a portion of the interior surfaces; said sheet material skins (34) forming the housing (32) being relatively thin and at least a portion thereof having an inlet opening (50) and an outlet opening (52) therein; an outlet duct (88) being positioned in the duct portion (54) and having a preestablished length, said outlet duct (88) interconnecting the outlet opening (52) through which said cooling medium (82) exits and the engine compartment (57); an inlet duct (84) being positioned in the duct portion (54) between the outlet duct (88) and the engine compartment (57) and having a predetermined length, said inlet duct (84) interconnecting the inlet opening (50) through which said cooling medium (82) enters and the engine compartment (57); said inlet duct (84) and said outlet duct (88) having a generally square cross-sectional configuration and said preestablished length of the outlet duct (88) being a greater length than said preestablished length of said inlet duct (84); and means (120) for actively reducing noise emitted from said engine (14) being connected to the housing (32) and positioned in the outlet duct (88). - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- said noise reduction enclosure (10) comprising;
Specification