Patent Publication Number: US-2023157516-A1

Title: Acoustically insulated machine

Description:
RELATED APPLICATIONS 
     This application is a divisional application of U.S. application Ser. No. 15/773,285, filed on May 3, 2018, which is the U.S. national stage entry of PCT/US16/60439, filed on Nov. 4, 2016, which claims priority to and all benefit of U.S. Provisional Application No. 62/251,914, filed on Nov. 6, 2015, the entire disclosures of which are fully incorporated herein by reference. 
     The present application relates generally to acoustically insulated machines, and more particularly to acoustically insulated machines having spaced apart multilayered sound absorbing members or sound absorbing member with integrated utility passages. 
    
    
     BACKGROUND OF THE INVENTION 
     Appliances and other machines that generate noise are usually provided with acoustical insulation to reduce the levels of emanating sound. The unwanted sound from these machines can be caused both by the mechanical operation of the motor or other mechanical component within the machine and by the vibration of the machine itself In a residential dwelling, excessive noise may be generated by dishwashers, clothes washers, clothes dryers, refrigerators, freezers, and microwave ovens, which can be annoying to inhabitants of the dwelling. 
     Conventional acoustical treatments for machines generally comprises sound transmission barriers and sound absorption layers. One form of acoustical insulation involves enclosing the noise source in an insulation structure. A typical form of acoustical insulation is a layer of mineral fiber insulation, such as fiberglass insulation, wrapped around or positioned around the source of unwanted noise. For example, a fiberglass absorber is usually incorporated in the front door panel of an under-the-counter dishwasher. The blanket of glass fibers absorbs some of the sound energy entering the fiberglass absorber, thereby resulting in a reduced transmission of unwanted sound from the source of sound in the appliance. Further, it is known that the insertion of a reflecting sound barrier within the acoustical insulation also reduces the sound transmission through the insulation product. 
     Thermoplastic blanket materials are well known in the art. Such materials have been utilized as acoustical and thermal insulators and liners for application to appliances. These insulators and liners typically rely upon both sound absorption, i.e. the ability to absorb incident sound waves and transmission loss, i.e. the ability to reflect incident sound waves, in order to provide sound attenuation. An example of a multilayer thermoplastic blanket having densified layers is disclosed by U.S. Pat. No. 7,357,974, which is incorporated herein by reference in its entirety. 
     SUMMARY 
     An acoustically insulated machine is disclosed. In one embodiment, the acoustically insulated machine includes a source of noise positioned within a housing, a first insulation member positioned within the housing and including a first porous sound absorbing layer and a first dense layer, and a second insulation member positioned within the housing and including a second porous sound absorbing layer and a second dense layer. The first insulation member being positioned closer to the internal source of noise than the second insulation member and the first insulation member being spaced apart from the second insulation member such that an air gap is formed between the first insulation member and the second insulation member. 
     In another embodiment, the acoustically insulated machine is a dishwasher assembly including a housing having a front side, a rear side, and a washing chamber, a plurality of legs supporting the housing, a pump and drive motor provided in a cavity between the legs and below the housing and an insulation member provided in the cavity. The insulation layer having a plurality of passages extending through the insulation member for routing utilities through the insulation member. 
     Various objects and advantages will become apparent to those skilled in the art from the following detailed description of the invention, when read in light of the accompanying drawings. It is to be expressly understood, however, that the drawings are for illustrative purposes and are not to be construed as defining the limits of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Various objects and advantages will become apparent to those skilled in the art from the following detailed description of the invention, when read in light of the accompanying drawings. It is to be expressly understood, however, that the drawings are for illustrative purposes and are not to be construed as defining the limits of the invention. 
       The accompanying drawings are incorporated in and form a part of this specification, illustrate several aspects of the present invention, and together with the description serve to explain certain principles of the invention. In the drawings: 
         FIG.  1    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine; 
         FIG.  2 A  is a schematic illustration of a pair of spaced apart, multi-layer insulation members; 
         FIG.  2 B  is a schematic illustration of a plurality of spaced apart, multi-layer insulation members; 
         FIG.  2 C  is a schematic illustration of a single-layer insulation member; 
         FIG.  3    is a graph illustrating sound absorption performance of non-spaced apart, insulation members; 
         FIG.  4    is a perspective view of a dishwasher installed in kitchen cabinetry; 
         FIG.  5    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  6    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart, multi-layer insulation members; 
         FIG.  7    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart, multi-layer insulation members; 
         FIG.  8    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart, multi-layer insulation members; 
         FIG.  9    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart, multi-layer insulation members; 
         FIG.  10    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  11    is a perspective view of an exemplary embodiment of an insulation member with utility passages; 
         FIG.  12    is a perspective view of an exemplary embodiment of an insulation member with utility passages; 
         FIG.  13    is a top view of an exemplary embodiment of an acoustically insulated machine assembly in an unconnected state; 
         FIG.  14    is a top view of the acoustically insulated machine assembly of  FIG.  13    in a partially connected state; 
         FIG.  15    is a top view of the acoustically insulated machine assembly of  FIG.  13    in a partially connected state; 
         FIG.  16    is a top view of the acoustically insulated machine assembly of  FIG.  13    in a partially connected state; 
         FIG.  17    is a top view of the acoustically insulated machine assembly of  FIG.  13    in a connected state; 
         FIG.  18    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  19    is a perspective view of an exemplary embodiment of an insulation member with utility passages; 
         FIG.  20    is a perspective view of an exemplary embodiment of an insulation member with utility passages; 
         FIG.  21    is a perspective view of an exemplary embodiment of an insulation member with utility passages; 
         FIG.  22    is a top view of an exemplary embodiment of an acoustically insulated machine assembly in a partially connected state; 
         FIG.  23    is a top view of the acoustically insulated machine assembly of  FIG.  22    in a partially connected state; 
         FIG.  24    is a top view of the acoustically insulated machine assembly of  FIG.  22    in a connected state; 
         FIG.  25    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  26    is a top view of an exemplary embodiment of an acoustically insulated machine assembly in an unconnected state; 
         FIG.  27    is a top view of the acoustically insulated machine assembly of  FIG.  26    in a partially connected state; 
         FIG.  28    is a top view of the acoustically insulated machine assembly of  FIG.  26    in a connected state; 
         FIG.  29    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart, multi-layer insulation members; 
         FIG.  30    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having spaced apart insulation members; 
         FIG.  31    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having wedge-shaped, multi-layer insulation members; 
         FIG.  32    is a schematic illustration of an exemplary embodiment of an acoustically insulated machine having an angled or curved, multi-layer insulation member; 
         FIG.  33    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  34    is a front view of the acoustically insulated dishwasher of  FIG.  33   ; 
         FIG.  35    is a perspective view of an exemplary embodiment of an acoustically insulated dishwasher; 
         FIG.  36    is a top view of the acoustically insulated dishwasher of  FIG.  35    in a first position; and 
         FIG.  37    is a top view of the acoustically insulated dishwasher of  FIG.  35    in a second position. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The embodiments disclosed herein will now be described by reference to some more detailed embodiments, in view of the accompanying drawings. These embodiments may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventions to those skilled in the art. 
     As described herein, when one or more components are described as being connected, joined, affixed, coupled, attached, or otherwise interconnected, such interconnection may be direct as between the components or may be indirect such as through the use of one or more intermediary components. Also as described herein, reference to a “member,” “component,” or “portion” shall not be limited to a single structural member, component, or element but can include an assembly of components, members or elements. 
     The present application discloses exemplary embodiments of acoustically insulated machines  10 . The acoustically insulated machine  10  may take a wide variety of different forms. For example, the acoustically insulated machine  10  may be a clothes washing machine, a dishwasher, an air conditioner, a microwave oven, a refrigerator, a freezer, or any other household machine or appliance that makes noise. The acoustically insulated machines  10  include one or more insulation members that may have variety of configurations, orientations, and compositions. The insulation members may serve as acoustic insulation, such as for example, by reflecting or absorbing the energy of sound waves, and in some embodiments, also serve as thermal insulation. 
     Referring to  FIG.  1   , an exemplary embodiment of an acoustically insulated machine  10  includes a cabinet  12  or housing, an internal source of noise  14 , a first insulation member  16  and a second insulation member  18 . The first insulation member  16  is spaced apart from the second insulation member  18 . In the example illustrated by  FIG.  1   , the insulation members  16 ,  18  can be spaced apart a distance X that at least partially defines an air gap  19  between the insulation members. 
     The insulation members  16 ,  18  can absorb sound energy  17  generated by internal source of noise  14  to make the machine  10  quieter. In the illustrated example, the insulation members  16 ,  18  are disposed inside the cabinet  12 . In other embodiments, however, the insulation members  16 ,  18  may be disposed outside of the cabinet  12 . The number and location of insulation members may vary in different embodiments of the acoustically insulated machines  10 . In some exemplary embodiments, the insulation members  16 ,  18  may also thermally insulate the machine  10  in addition to acoustically insulate the machine. 
     The first and second insulation members  16 ,  18  may take a wide variety of different forms. In the exemplary embodiment illustrated by  FIG.  1   , each of the first and second insulation members  16 ,  18  includes one or more porous, sound absorbing layers  20  and one or more dense or facing layers  22  attached to a face of the one or more dense sound absorbing layers. The one or more dense or facing layers  22  can have a density that is greater than a density of the sound absorbing layers  20 . Referring to  FIG.  2 A , the first insulation member  16  includes a first dense or facing layer  22   a  and a first porous, sound absorbing layer  20   a  and the second insulation member  18  includes a second dense or facing layer  22   b  and a second porous, sound absorbing layer  20   b.  The combination of porous, sound absorbing layers  20  and dense or facing layers  22  allows the thin first and second insulation members  16 ,  18  to provide the sound absorbing effectiveness of much thicker insulation members  26 , as shown in  FIG.  2 C , that are made only from porous, sound absorbing material. 
     In the example of  FIG.  2 A , low frequency sound energy  17  from the source of noise  14  hits the first dense or facing layer  22   a  of the first insulation member  16 . The low frequency sound energy may be sound energy in a frequency range of 100 to 800 Hz, a frequency range of 100 to 400 Hz, a frequency range of 100 to 200 Hz, a frequency range of 100 to 150 Hz, or a frequency range of 100 to 125 Hz. The wavelengths of the low frequency sound energy are long enough that a portion  32  of the low frequency sound energy  17  is reflected by the dense or facing layer  22   a  and the rest (i.e. a majority) of the low frequency sound energy passes into the first dense or facing layer  20   a.  A majority, and in some cases substantially all or all high frequency sound energy is reflected by the first dense or facing layer  22   a.  For example, the high frequency sound energy may be sound energy at a frequency that is higher than 800 Hz. This high frequency sound energy is reflected back into the machine  10  ( FIG.  1   ) by the facing layer  22   a.  Since, however, the wavelength of the high frequency energy is short, the high frequency sound energy dissipates before it finds another path out of the machine. 
     In one exemplary embodiment, the reflected portion  32  of low frequency airborne acoustic energy or low frequency sound energy is less than fifty percent of the low frequency airborne acoustic energy or low frequency sound energy  17  that hits the first dense or facing layer  22   a.  For example, the reflected portion  32  may be 50%, less than or equal to 45%, less than or equal to 40%, less than or equal to 35%, less than or equal to 30%, less than or equal to 25%, less than or equal to 20%, less than or equal to 15%, or less than or equal to 10% of the low frequency airborne acoustic energy or low frequency sound energy  17 . The reflected portion  32  may escape the cabinet  12  at other locations. As such, reducing the reflected portion  32  may reduce the overall low frequency sound energy that escapes from the cabinet  12  ( FIG.  1   ). 
     Some of the low frequency sound energy that passes into the first dense or facing layer  22   a  may be absorbed by the first dense or facing layer. Low frequency sound energy that is not absorbed by the first dense or facing layer  22   a  passes into the first porous, sound absorbing layer  20   a.  Some of the low frequency sound energy that passes into the first porous, sound absorbing layer  20   a  is absorbed by the first porous, sound absorbing layer. A remaining portion  38  exits the first insulation member  16  and enters the air gap  19  between the first and second insulation members  16 ,  18 . The air gap  19  can be at least partially defined by the distance X between the first and second insulation member  16 ,  18 . The air gap  19  can act as a broad band sound absorber or acoustic barrier. Thus, some of the low frequency sound that enters the air gap  19  is absorbed by or dissipated by the air gap. 
     A remaining portion  39  of the low frequency energy not absorbed or dissipated by the air gap  19  hits the second dense or facing layer  22   b.  A portion  40  of the low frequency sound energy  39  that hits the second dense or facing layer  22   b  is reflected back into the air gap  19 . The rest of the low frequency sound energy passes into the second dense or facing layer  22   b.  In one exemplary embodiment, the reflected portion  40  of low frequency sound energy is less than fifty percent of the low frequency sound energy  39  that hits the second dense or facing layer  22   b.  For example, the reflected portion  40  may be 50%, less than or equal to 45%, less than or equal to 40%, less than or equal to 35%, less than or equal to 30%, less than or equal to 25%, less than or equal to 20%, less than or equal to 15%, or less than or equal to 10% of the low frequency sound energy  39 . 
     Some of the low frequency sound energy that passes into the second dense or facing layer  22   b  is absorbed by the second dense or facing layer. Low frequency sound energy  48  that is not absorbed by the second dense or facing layer passes into the second porous, sound absorbing layer  20   b.  Some of the low frequency sound energy  48  that passes into the second porous, sound absorbing layer  20   b  is absorbed by the second porous, sound absorbing layer  20   b.  A portion  52  of the low frequency sound energy that is not absorbed passes out of second insulation member  18 . This low frequency sound energy  52  is much less than the low frequency sound energy  17  that initially hits the first insulation member  16 . 
     As can be seen from  FIG.  2 A , the reflected sound energy portion  40  bounces back into the air gap  19 . A portion of this low frequency sound energy  40  is absorbed or dissipated in the air gap  19 . The remaining portion  41  enters the first porous sound absorbing layer  20   a.  A portion of the low frequency sound energy  41  is absorbed by the first porous, sound absorbing layer  20   a  and a remaining portion  42  hits the first dense or facing layer  22   a.  A portion  43  of the low frequency sound energy that hits the first dense or facing layer  22   a  is reflected back into the first porous, sound absorbing layer  20   a.  Thus, some low frequency sound energy may be bounced back and forth across the air gap  19  where it dissipates or is absorbed. 
     The arrangement of dense or facing layers and porous layers allow a majority of the low frequency sound energy  17  to enter the first insulation member  16 , then trap a majority of the low frequency sound energy in the first and second insulation member  16 ,  18 , and allow only a small portion  52  of the low frequency sound energy to pass through the insulation members  16 ,  18 . Referring to  FIG.  2 C , the small portion of low frequency sound energy  52  is comparable to the portion of low frequency sound energy that passes through a much thicker insulation member that is made only of porous, sound absorbing material. 
     In the example of  FIG.  2 B , a third insulation member  60  having a third dense or facing layer  22   c  and a third porous, sound absorbing layer  20   c  is included. The third insulation member  60  is spaced apart from the second insulation member  18  by an air gap  19   b.  Low frequency sound energy  17  or low frequency airborne acoustic energy from the source of noise  14  hits the first dense or facing layer  22   a.  A portion  32  of the low frequency sound energy  17  is reflected by the dense or facing layer  22   a  and the rest of the low frequency sound energy passes into the first dense or facing layer  22   a.  In one exemplary embodiment, the reflected portion  32  of low frequency sound energy is less than fifty percent of the low frequency sound energy  17  that hits the first dense or facing layer  22   a.  For example, the reflected portion  32  may be 50%, less than or equal to 45%, less than or equal to 40%, less than or equal to 35%, less than or equal to 30%, less than or equal to 25%, less than or equal to 20%, less than or equal to 15%, or less than or equal to 10% of the low frequency sound energy  17 . The reflected portion  32  may escape the cabinet  12  at other locations. As such, reducing the reflected portion  32  may reduce the overall low frequency sound energy that escapes from the cabinet  12  ( FIG.  1   ). 
     Some of the low frequency sound energy that passes into the first dense or facing layer  22   a  is absorbed by the first dense or facing layer. The low frequency sound energy that is not absorbed by the first dense or facing layer passes into the first porous, sound absorbing layer  20   a.  Some of the low frequency sound energy that passes into the first porous, sound absorbing layer  20   a  is absorbed by the first porous, sound absorbing layer. A remaining portion  38  enters the air gap  19   a  between the first and second insulation members  16 ,  18 . The air gap  19   a  can be at least partially defined by the distance Xa between the first and second insulation member  16 ,  18 . The air gap  19   a  may act as a broad band sound absorber or acoustic barrier. Thus, some of the low frequency sound  38  that enters the air gap  19   a  is absorbed or dissipated by the air gap. 
     A remaining portion  39  hits the second dense or facing layer  22   b  and a portion  40  of the low frequency sound energy  39  is reflected back into the air gap  19   a  by the dense or facing layer  22   b  and the rest of the low frequency sound energy passes into the second dense or facing layer. In one exemplary embodiment, the reflected portion  40  of low frequency sound energy is less than fifty percent of the low frequency sound energy  39  that hits the second dense or facing layer  22   b.  For example, the reflected portion  40  may be 50%, less than or equal to 45%, less than or equal to 40%, less than or equal to 35%, less than or equal to 30%, less than or equal to 25%, less than or equal to 20%, less than or equal to 15%, or less than or equal to 10% of the low frequency sound energy  39 . 
     Some of the low frequency sound energy that passes into the second dense or facing layer  22   b  is absorbed by the second dense or facing layer. Low frequency sound energy that is not absorbed by the second dense or facing layer  22   b  passes into the second porous, sound absorbing layer  20   b.  Some of the low frequency sound energy that passes into the second porous, sound absorbing layer  20   b  is absorbed by the second porous, sound absorbing layer  20   b.    
     A remaining portion  48  enters the air gap  19   b  between the second and third insulation members  18 ,  60 . The air gap  19   b  can be at least partially defined by the distance Xb between the second and third insulation members  18 ,  60 . The air gap  19   b  acts may act a broad band sound absorber or acoustic barrier. Thus, some of the low frequency sound that enters the air gap  19   b  is absorbed or dissipated by the air gap. 
     A remaining portion  49  hits the third dense or facing layer  22   c.  A portion  50  of the low frequency sound energy  49  is reflected back into the air gap  19   b  by the dense or facing layer  22   c.  In one exemplary embodiment, the reflected portion  50  of low frequency sound energy is less than fifty percent of the low frequency sound energy  49  that hits the third dense or facing layer  22   c.  For example, the reflected portion  50  may be 50%, less than or equal to 45%, less than or equal to 40%, less than or equal to 35%, less than or equal to 30%, less than or equal to 25%, less than or equal to 20%, less than or equal to 15%, or less than or equal to 10% of the low frequency sound energy  49 . 
     The rest of the low frequency sound energy  49  that is not reflected back into the air gap  19   b  passes into the third dense or facing layer  22   c.  Some of the low frequency sound energy that passes into the third dense or facing layer  22   c  is absorbed by the third dense or facing layer. The portion  51  of low frequency sound energy that is not absorbed by the third dense or facing layer  22   c  passes into the third porous, sound absorbing layer  20   c.  Some of the low frequency sound energy  51  that passes into the third porous, sound absorbing layer  20   c  is absorbed by the third porous sound absorbing layer. Low frequency sound energy  52  that is not absorbed by the third porous, sound absorbing layer  20   c  exits the third porous sound absorbing layer. This low frequency sound energy  52  is much less than the low frequency sound energy  17  that initially hit the first insulation member  16 . 
     As can be seen from  FIG.  2 B , a portion of this low frequency sound energy  50  that is reflected back into the air gap  19   b  is absorbed or dissipated by the air gap. The remaining portion  53  hits the second porous sound absorbing layer  20   b.  A portion of the low frequency sound energy  53  is absorbed by the second porous sound absorbing layer  20   b.  A portion  54  of the low frequency sound energy  53  that is not absorbed or dissipated, hits the second dense or facing layer  22   b.  A portion  55  of the low-frequency sound energy  54  that hits the second dense or facing layer  22   b  is reflected back into the second porous sound absorbing layer  20   b  and a portion  56  may pass through the second dense or facing layer  22   b  and into the air gap  19   a.    
     A portion of the reflected low frequency sound energy  40 ,  56  that is reflected back to the air gap  19   a  is absorbed or dissipated by the air gap. A remaining portion  57  of the low frequency sound energy hits the first porous sound absorbing layer  20   a.  A portion of the low frequency sound energy  57  is absorbed by the first porous sound absorbing layer  20   a  and a remaining portion  58  hits the first dense or facing layer  22   a.  A portion  59  of the low frequency sound energy  58  is reflected back into the first porous sound absorbing layer  20   a.  Thus, some low frequency sound energy may be bounced back and forth across the air gap  19   a  and  19   b  where it dissipates or is absorbed. 
     The arrangement of dense or facing layers, porous layers, and air gaps allow a majority of the low frequency sound energy to enter the insulation members, then trap a majority of the low frequency sound energy, and allow only a small portion  52  of the low frequency sound energy to pass through the insulation members. Referring to  FIGS.  2 B and  2 C , the small portion of low frequency sound energy  52  may be comparable to or less than the portion of low frequency sound energy that passes through a much thicker insulation member that is made only of porous, sound absorbing material. 
     The graph of  FIG.  3    illustrates the effect of a multi-layer arrangement of the porous, sound absorbing layers  20  and dense or facing layers  22  when those layers are arranged as disclosed in U.S. Published Patent Application 2012/0298154, to Rockwell et. al, the disclosure of which is fully incorporated herein by reference. In  FIG.  3   , an absorption coefficient (y-axis), which is a measure of the absorptive effectiveness of the insulation member, is plotted vs. noise frequencies (x-axis) for four different insulation members. The first plot  302  represents the performance of an insulation member that comprises a porous, lofted sound absorbing layer  20  having a thickness T and single thin facing layer  22 . The second plot  304  represents the performance of an insulation member that comprises a porous, lofted sound absorbing layer  20  having a thickness  2 T and a single thin facing layer  22 . The third plot  306  represents the performance of an insulation member  16  constructed with two porous, lofted sound absorbing layers  20  alternating with two thin facing layers  22  where the first porous, sound absorbing layer  20   a  has a thickness T and the second porous, sound absorbing layer  20   b  has a thickness  2 T. The fourth plot  308  represents the performance of an insulation member  16  constructed with three porous, lofted sound absorbing layers  20  alternating with three thin facing layers  22  where the first sound absorbing layer  20   a  has a thickness T, the second sound absorbing layer  20   b  has a thickness  2 T, and the third sound absorbing layer  20   c  has a thickness  2 T. 
     As can be seen from the graph of  FIG.  3    the multi-layer arrangements of multiple porous, sound absorbing layers  20  and multiple dense or facing layers  22  significantly enhances the performance of the insulation member  16 , especially in a low frequency range of between 100 and 500 Hz, and most especially around 125 Hz. As can be seen from the graph of  FIG.  3   , the multi-layer arrangements have more than an additive effect on the absorption performance, especially in low frequency ranges, such as at frequencies between 100 Hz and 200 Hz. For example, at 125 Hz, the absorption performance coefficient of the 2 absorptive layer/2 facing layer insulation member (plot  306 ) is about 15-20% more than the absorption performance coefficients of the two 1 absorptive layer/1 facing layer (plots  302 ,  304 ) added together. In addition, at 125 Hz, the absorption performance coefficient of the 3 absorptive layer/3 insulation member (plot  308 ) is about 50% more than the absorption performance coefficient of the 2 absorptive layer/2 facing layer insulation member (plot  306 ) added to the 1 absorptive layer/1 absorptive layer (plot  304 —i.e.  2 T thickness plot). As such, adding the second and third absorptive/facing layers increases the absorptive performance coefficient in a substantially exponential manner. This substantially increased acoustical absorption performance is especially useful in machines having motors and pumps that generate noise in a low frequency range, such as frequencies around 125 Hz. For example, the increased acoustical performance is beneficial in a dishwasher or washing machine that generates noise in a low frequency range, such as frequencies around 125 Hz. 
     Introducing the air gap  19  between the first porous sound absorbing layer  20   a  and the second facing layer  22   b,  as shown in  FIG.  2 A , provides improved the absorptive effectiveness as compared to the absorptive effectiveness, shown in the third plot  306 , of the two layer, two facing layer arrangement. Similarly, introducing the air gap  19   a  between the first porous sound absorbing layer  20   a  and the second facing layer  22   b  and the air gap  19   b  between the second porous sound absorbing layer  20   b  and the third facing layer  22   c,  as shown in  FIG.  2 B , provides improved absorptive effectiveness as compared to the absorptive effectiveness, shown in the fourth plot  308 , of the three layer, three facing layer arrangement. 
     The porous, sound absorbing layers  20  may be made from a wide variety of different materials. For example, the porous, sound absorbing layers  20  may be made from thermoplastic polymers, such as polyester, polyethylene terephthalate (PET) polypropylene and the like. In one exemplary embodiment, the sound absorbing layer  20  is made from a fine fiber PET material, such as a  2  denier fiber size PET material. The porous, sound absorbing layers  20  may be formed with a variety of different densities and lofts, which can be selected to adjust the acoustic performance of the insulation member  16 . In one exemplary embodiment, the porous, sound absorbing layer  20  is 15-300 grams per square foot and a thickness range of ⅛ inch to 3 inches. In other embodiments, the sound absorbing layer  20  may have a thickness range of 1½ inch to 1½ inches. For example, in the embodiments illustrated by  FIGS.  2 A and  2 B , the first sound absorbing layer  20   a  may be a PET material, such as VersaMat  2110  (available from Owens Corning) that is 20-25 grams per square foot with a thickness of about ¾ inch, the second sound absorbing layer  20   b  may be a PET material, such as VersaMat  2110  that is 60-80 grams per square foot with a thickness of about 1½ inch, and the third sound absorbing layer  20   c  ( FIG.  2 B ) may be a PET material, such as VersaMat  2110  that is 60-80 grams per square foot with a thickness of about 1½ inch. However, any combination of materials, lofts, and densities may be selected or changed to achieve different acoustic performance characteristics. 
     The facing layers  22  can take a wide variety of different forms. In an exemplary embodiment, the facing  22  is a relatively permeable layer that allows noise and air to pass through the facing member. For example, the facing layers  22  may have an airflow resistance between about 600-1400 Rayls. In one exemplary embodiment, the facing layers  22  have an airflow resistance between 900-1400 Rayls. In other exemplary embodiment, the facing layers  22  have an airflow resistance between 600-1100 Rayls. The facing layers  22  may be selected to have an airflow resistance of about 700 Rayls, about 900 Rayls, about 1100 Rayls, about 1300 Rayls, or about 1400 Rayls. Other airflow resistances, however, can be selected. In one exemplary embodiment, the facing layers  22  in the embodiments illustrated by  FIGS.  2 A and  2 B  have an airflow resistance of about 900, 1100 and/or 1400 Rayls. 
     The facing layers  22  can be made from a wide variety of different materials and may have a variety of different thicknesses. For example, any material having the airflow resistance described above can be used. Examples of acceptable materials for the facing layers  22  include, but are not limited to polypropylene, PET, non-porous materials that are perforated to allow airflow, such as perforated metal foil, perforated polymer material, such as a Teflon sheet that has been perforated to allow airflow. 
     The facing layer  22  may have a wide variety of different densities and thicknesses. In an exemplary embodiment, the dense or facing layer  22  is much denser than the sound absorbing layer  20 . For example, in the embodiments illustrated by  FIGS.  2 A and  2 B , the dense or facing layers  22   a,    22   b,    22   c  may be a polypropylene material, such as a spunbond/meltblown/spunbond sheet that is 50 grams per square meter (gsm). The facing layer  22  can have any thickness. For example, the facing layer  22 , when made from a polymer such as polypropylene or PET, may be between 0.01 and 0.1 cm thick. 
     The air gaps  19   a,    19   b  may be a wide variety of different shapes and sizes. For example, the size of the air gaps  19  can at least partially be defined by the distance X between the insulation members. The distance between the insulation members and the orientation and configuration of each of the insulation members can vary in different embodiments. Thus, the size and shape of the air gaps may vary in different embodiments and at different locations along the length of the insulation members. In the schematic illustrations of  FIGS.  1 - 2     b,  the insulation members are generally planar and arranged parallel to each other. The air gap between the first and second insulation members can be defined by the distance X between the insulation member and the length of each insulation member. In other embodiments, however, the distance between the insulation members may vary across the length of the insulation members. Thus, the air gap size can vary at different locations between the insulation members. 
     The facing layers  22  and the sound absorbing layers  20  can be assembled in a wide variety of different manners. In one exemplary embodiment, a facing layer  22  is bonded to one or both of the faces of the sound absorbing layer  20  to form a porous/dense laminate  21 . The facing layer  22  may be bonded to the sound absorbing layer  20  in a wide variety of different ways. For example, the facing layer  22  may be laminated to the sound absorbing layer  20  using heat and/or pressure or the facing layer may be bonded to the sound absorbing layer with an adhesive. 
     The insulation members  16 ,  18  can take a wide variety of different forms, be made from a wide variety of different materials, and be made in a wide variety of different ways. The insulation members  16   18 , may have any number of porous, sound absorbing layers  20  and dense or facing layers  22 . For example, the insulation member  16  may include any number of alternating dense or facing layers  22  and porous, sound absorbing layers  20  with one porous, sound absorbing layer at one outer surface and one dense or facing layer at the other outer surface, any number of alternating dense or facing layers  22  and porous, sound absorbing layers  20  with porous, sound absorbing layers at the outer surfaces, and/or any number of alternating dense or facing layers  22  and porous, sound absorbing layers  20  with dense or facing layers at the outer surfaces. Any arrangement of porous, sound absorbing layers  20  and dense or facing layers  22  can be used. 
     Referring to  FIGS.  4  and  5   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  400 . The following description of a dishwasher is provided for illustrative purposes only and is not intended to limit the scope of the application unless otherwise stated. The acoustically insulated dishwasher  400  illustrated by  FIGS.  4  and  5    may include a housing  402 , a pump  404 , a drive motor  406 , a plate  408  closing a front side  410  of the housing, and one or more insulation members  416 . The housing  402  includes a washing chamber  418  ( FIG.  5   ) and an access door  420  ( FIG.  4   ). 
     The dishwasher  400  includes a base portion  434  that is provided with a plurality of legs  422  and/or wheels  423  that support the housing  402 . The wheels  423  enable an installer to easily position the dishwasher  400  below the countertop  425  and legs  422  enable the installer to accurately position/level the dishwasher  400 . The pump  404  and drive motor  406  are provided in a cavity  424  between the legs  422  and below the housing  402 . 
     The dishwasher  400  illustrated by  FIG.  5    includes a wash arm  414  that is arranged within the washing chamber  418  above a sump  415 . The wash arm  414  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  400  in a manner known in the art. The pump  404  is connected to the sump  415 . In operation, the pump  404  creates a circulating flow of washing fluid within the washing chamber  418  during a washing operation. 
     Referring to  FIG.  4   , the door  420  includes a handle  419  that selectively provides access to the washing chamber  418 . The door  420  includes a plurality of control elements (not shown) for selecting particular operating parameters of a washing operation. In the embodiment shown in  FIG.  4   , the dishwasher  400  is arranged below a countertop  425  adjacent to cabinetry  427 . The plate  408  extends below the door  420  to provide a finished, aesthetic appearance. In one exemplary embodiment, the one or more insulation members  416  may be provided between the plate  408  and the pump  404  ( FIG.  6   ). 
     The insulation members  416  may take a wide variety of different forms. For example, the insulation members  416  may have any of the multi-layer configurations of the first and second insulation members  16 ,  18  described above. In one exemplary embodiment, at least one of the one or more insulation members  416  comprises a porous, sound absorbing layer  20  and a dense or facing layer  22  attached to a of the sound absorbing layer  20 . The dense or facing layer  22  has a density that is greater than a density of the sound absorbing layer. In one exemplary embodiment, the one or more insulation members  416  are oriented such that the dense or facing layer  22  faces toward the pump  404  and motor  406  and at least two insulation members are separated by an air gap  19 . The dense or facing layer  22  may be configured to allow a majority of low frequency sound energy from the pump  404  and motor  406  to pass into the dense or facing layer  22 . 
     The one or more insulation members  416  may be positioned and oriented within the cabinet  12  of the machine  10  in a variety of ways to reduce the amount of sound energy generated by the internal source of noise  14  that leaves the cabinet. The insulation members  416  can be disposed inside any of the walls of the cabinet  12  or positioned within the cabinet in any suitable orientation. In other embodiments, however, one or more insulation members  416  may be disposed outside of the cabinet  12  and may be disposed on or outside any of the walls of the cabinet. The insulation members  416  can be oriented such that a dense or facing layer  22  faces toward the internal source of noise  14 . In other embodiments, however, one or more insulation members  416  may be oriented such that a porous, sound absorbing layer  20  faces toward the internal source of noise  14 . 
     Referring to  FIG.  6   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  600 . The dishwasher  600  may take a wide variety of different forms. For example, the dishwasher  600  may be configured as described above in relation to dishwasher  400 . In other embodiments, however, the dishwasher  600  may be configured differently than the dishwasher  400 . 
     The dishwasher  600  includes a cabinet or housing  602 , a pump  604  and a drive motor  606  disposed within the cabinet, a first insulation member  608 , and a second insulation member  610 . The cabinet  602  includes a front wall  612 , a rear wall  614  spaced apart and generally parallel to the front wall, a first side wall  616  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  618  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The first insulation member  608  and the second insulation member  610  may take a wide variety of different forms. For example, the first and second insulation members  608 ,  610  may have any of the multi-layer configurations of the insulation members  16 ,  18 , and  416  described above. In other embodiments, however, the insulation members  608 ,  610  may differ from the insulation members  16 ,  18 , and  416 . In the exemplary embodiment of  FIG.  6   , the first insulation member  608  and the second insulation member  610  are multilayered. 
     The first insulation member  608  includes a first dense or facing layer  622   a  that faces toward the pump  604  and the drive motor  606 , a first porous sound absorbing layer  620   a  attached to the first dense or facing layer, a second dense or facing layer  622   b  attached to the first porous sound absorbing layer  620   a,  and a second porous sound absorbing layer  620   b  attached to the second dense or facing layer  622   b.  The first insulation member  608  has a first length L 1 , has a generally linear or planar configuration, and is a distance Y from the pump  604 . 
     The second insulation member  610  includes a first dense or facing layer  622   a  that faces toward the pump  604  and the drive motor  606 , a first porous sound absorbing layer  620   a  attached to the first dense or facing layer, a second dense or facing layer  622   b  attached to the first porous sound absorbing layer  620   a,  and a second porous sound absorbing layer  620   b  attached to the second dense or facing layer  622   b.  The second insulation member  608  has a second length L 2 , has a generally linear or planar configuration, and is a distance X from the first insulation member  608 . In the exemplary embodiment of  FIG.  6   , the first length L 1  is smaller than the second length L 2  and the distance X is greater than the distance Y. In other embodiments, however, the first length L 1  have be equal to or greater than the second length L 2  and the distance X may be equal to or less than the distance Y. 
     The first insulation member  608  is arranged parallel, or generally parallel, to the second insulation member  610  and the front wall  612 . In other embodiments, however, the first insulation member  608  may be other than parallel to the second insulation member  610  and/or the front wall  612 . The first insulation member  608  is spaced apart from the second insulation member  610  such that an air gap  619  is formed between the first and second insulation members  608 ,  610 . The air gap  619  may be shaped and sized in a variety of ways. For example, the air gap  619  may be configured as described above regarding the air gaps  19 ,  19   a,    19   b  of  FIGS.  2 A and  2 B . The air gap  619  can be at least partially defined by the distance X that the first insulation member  608  is spaced apart from the second insulation member  610 . In the exemplary embodiment, the distance X between the first and second insulation members  608 ,  610  is constant, or generally constant, along the length of the first insulation member. Thus, the size of the gap  619  is constant, or generally constant, along the length. In other embodiments, however, the size of the air gap between the first and second insulation members may vary along the length of the members. 
     Referring to  FIG.  7   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  700 . The dishwasher  700  is similar to the dishwasher  600  of  FIG.  6    in that the dishwasher  700  includes a cabinet or housing  702 , a pump  704  and a drive motor  706  disposed within the cabinet, a first insulation member  708 , and a second insulation member  710 . The cabinet  702  includes a front wall  712 , a rear wall  714  spaced apart and generally parallel to the front wall, a first side wall  716  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  718  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The first insulation member  708  and the second insulation member  710  are multilayered. The first insulation member  708  includes a first dense or facing layer  722   a  that faces toward the pump  704  and the drive motor  706 , a first porous sound absorbing layer  720   a  attached to the first dense or facing layer, a second dense or facing layer  722   b  attached to the first porous sound absorbing layer  720   a,  and a second porous sound absorbing layer  720   b  attached to the second dense or facing layer  722   b.    
     The second insulation member  710  includes a first dense or facing layer  722   a  that faces toward the pump  704  and the drive motor  706 , a first porous sound absorbing layer  720   a  attached to the first dense or facing layer, a second dense or facing layer  722   b  attached to the first porous sound absorbing layer  720   a,  and a second porous sound absorbing layer  720   b  attached to the second dense or facing layer  722   b.  The second insulation member  708  has a generally linear or planar configuration and is arranged generally parallel to the front wall  712 . 
     The first insulation member  708 , however, differs from the first insulation member  608  of  FIG.  6    in that the first insulation member  708  is curved or includes angled portions. In the illustrated embodiment of  FIG.  7   , the first insulation member  708  partially surrounds the pump  704  and/or the drive motor  706  and is a distance Y from the pump  704 . In other embodiments, however, the first insulation member  708  may not surround, or partially surround, the pump  704  and/or the drive motor  706 . In the illustrated embodiment, the first insulation member  708  includes a first angled portion  730 , a second angled portion  732 , and an intermediate portion  734  that connects the first angled portion to the second angled portion. The first angled portion  730 , the second angled portion  732 , and the intermediate portion  734  may be a single piece of multilayer insulation, or three separate portions that are connected or arranged adjacent to each other. In other embodiments, the first insulation member  708  may have more or less than two angled portions or may be curved. 
     In the exemplary embodiment of  FIG.  7   , the first angled portion  730  extends at an angle α from to the intermediate portion  734  and the second angled portion  732  extends at an angle β from to the intermediate portion  734 . In one exemplary embodiment, the angle α and the angle β are both 45 degrees, or approximately 45 degrees. In other embodiments, however, the angle α may be different from the angle β. In addition, in other embodiments the angle α and/or the angle β may be greater than or less than 45 degrees. 
     The first insulation member  708  is spaced apart from the second insulation member  710  a distance X such that an air gap  719  is formed between the first and second insulation members  708 ,  710 . In the embodiment of  FIG.  7   , the intermediate portion  734  is generally parallel to the second insulation member  710  and to the front wall  712 . In other embodiments, however, the intermediate portion  734  may be other than parallel to the second insulation member  710  and/or the front wall  712 . The distance X between the first and second insulation members  708 ,  710  may vary. In the illustrated embodiment, the distance between the second insulation member  710  and the intermediate portion  734  is less than the distance between the second insulation member and either the first angled portion  730  or the second angled portion  732 . Likewise, the distance Y between the first insulation member  708  and the pump  704  may vary. 
     Referring to  FIG.  8   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  800 . The dishwasher  800  is similar to the dishwasher  700  of  FIG.  7    in that the dishwasher  800  includes a cabinet or housing  802 , a pump  804  and a drive motor  806  disposed within the cabinet, a first insulation member  808 , and a second insulation member  810 . The cabinet  802  includes a front wall  812 , a rear wall  814  spaced apart and generally parallel to the front wall, a first side wall  816  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  818  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The first insulation member  808  and the second insulation member  810  may be multilayered. The first insulation member  808  includes a first dense or facing layer  822   a  that faces toward the pump  804  and the drive motor  806 , a first porous sound absorbing layer  820   a  attached to the first dense or facing layer, a second dense or facing layer  822   b  attached to the first porous sound absorbing layer  820   a,  and a second porous sound absorbing layer  820   b  attached to the second dense or facing layer  822   b.    
     The second insulation member  810  includes a first dense or facing layer  822   a  that faces toward the pump  804  and the drive motor  806 , the first porous sound absorbing layer  820   a  attached to the first dense or facing layer, a second dense or facing layer  822   b  attached to the first porous sound absorbing layer  820   a,  and a second porous sound absorbing layer  820   b  attached to the second dense or facing layer  822   b.  The second insulation member  808  has a generally linear or planar configuration and is arranged generally parallel to the front wall  812 . 
     The first insulation member  808  is curved or includes angled portions such that it partially surrounds the pump  804  and/or the drive motor  806  and is a distance Y from the pump  804 . In the illustrated embodiment, the first insulation member  808  includes a first angle portion  830 , a second angled portion  832 , and an intermediate portion  834  that connects the first angled portion to the second angled portion and is generally parallel to the second insulation member  810  and to the front wall  812 . The first insulation member  808  is spaced apart from the second insulation member  810  a distance X such that an air gap  819  is formed between the first and second insulation members  808 ,  810 . 
     In the exemplary embodiment of  FIG.  8   , the first angled portion  830  extends at an angle α from to the intermediate portion  834  and the second angled portion  832  extends at an angle β from to the intermediate portion  834 . In one exemplary embodiment, the angle α and the angle β are both 45 degrees, or approximately 45 degrees. In other embodiments, however, the angle α may be different from the angle β. In addition, in other embodiments the angle α and/or the angle β may be greater than or less than 45 degrees. 
     The acoustically insulated dishwasher  800 , however, differs from the dishwasher  700  in that the dishwasher  800  includes one or more insulation members attached or adjacent the inside of one or more of the cabinet rear wall  814  or sidewalls  816 ,  818 . In the exemplary embodiment of  FIG.  8   , a third insulation member  840  is attached to or adjacent the rear wall  816 , a fourth insulation member  842  is attached to or adjacent the first sidewall  816 , and a fifth insulation member  844  is attached to or adjacent the second sidewall  818 . Collectively, the second insulation member  810 , the third insulation member  840 , the fourth insulation member  842 , and the fifth insulation member  844  surround the pump  804  and the drive motor  806 . The third insulation member  840 , the fourth insulation member  842 , and the fifth insulation member  844  may have the same multi-layer configuration of the first and/or second insulation members  808 ,  810 . In other embodiments, however, the third insulation member  840 , the fourth insulation member  842 , and the fifth insulation member  844  may have different configurations than the first or second insulation members  808 ,  810 . Furthermore, any of the insulation members may be configured differently than any other insulation member. 
     The third insulation member  840  includes a first dense or facing layer  822   a  that faces toward the pump  804  and the drive motor  806 , a first porous sound absorbing layer  820   a  attached to the first dense or facing layer, a second dense or facing layer  822   b  attached to the first porous sound absorbing layer  820   a,  and a second porous sound absorbing layer  820   b  attached to the second dense or facing layer  822   b.  The third insulation member  840  has a generally linear or planar configuration and is arranged generally parallel to the rear wall  814 . 
     The fourth insulation member  842  includes a first dense or facing layer  822   a  that faces toward the pump  804  and the drive motor  806 , a first porous sound absorbing layer  820   a  attached to the first dense or facing layer, a second dense or facing layer  822   b  attached to the first porous sound absorbing layer  820   a,  and a second porous sound absorbing layer  820   b  attached to the second dense or facing layer  822   b.  The fourth insulation member  842  has a generally linear or planar configuration and is arranged generally parallel to the first sidewall  816 . 
     The fifth insulation member  844  includes a first dense or facing layer  822   a  that faces toward the pump  804  and the drive motor  806 , a first porous sound absorbing layer  820   a  attached to the first dense or facing layer, a second dense or facing layer  822   b  attached to the first porous sound absorbing layer  820   a,  and a second porous sound absorbing layer  820   b  attached to the second dense or facing layer  822   b.  The fifth insulation member  844  has a generally linear or planar configuration and is arranged generally parallel to the second sidewall  818 . 
     A portion of the air gap  819  extends between the first insulation member  808  and the fourth insulation member  842  and another portion of the air gap  819  extends between the first insulation member  808  and the fifth insulation member  844 . The distance X between the first insulation member  808  and the second insulation member  810  can vary. Likewise, the distance between the first insulation member  808  and the fourth insulation member  842  or the fifth insulation member  844  can vary. The air gap  819  can be at least partially defined by the distances between the first insulation member and the other insulation members  810 ,  840 ,  842 ,  844 , thus the size of the air gaps  619  may vary. 
     Referring to  FIG.  9   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  900 . The dishwasher  900  is similar to the dishwasher  700  of  FIG.  7    in that the dishwasher  900  includes a cabinet or housing  902 , a pump  904  and a drive motor  906  disposed within the cabinet. The cabinet  902  includes a front wall  912 , a rear wall  914  spaced apart and generally parallel to the front wall, a first side wall  916  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  918  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The dishwasher  900  includes a first insulation member  908 , a second insulation member  910 , and a third insulation member  940 . Each of the first insulation member  908 , the second insulation member  910 , and the third insulation member  940  can be multilayered. The first insulation member  908  includes a first dense or facing layer  922   a,  a first porous sound absorbing layer  920   a  attached to the first dense or facing layer, a second dense or facing layer  922   b  attached to the first porous sound absorbing layer  920   a,  and a second porous sound absorbing layer  920   b  attached to the second dense or facing layer  922   b.    
     The second insulation member  910  includes a first dense or facing layer  922   a  that faces toward the pump  904  and the drive motor  906 , the first porous sound absorbing layer  920   a  attached to the first dense or facing layer, a second dense or facing layer  922   b  attached to the first porous sound absorbing layer  920   a,  and a second porous sound absorbing layer  920   b  attached to the second dense or facing layer  922   b.  The second insulation member  908  has a generally linear or planar configuration and is arranged generally parallel to the front wall  912 . 
     The third insulation member  940  includes a first dense or facing layer  922   a,  a first porous sound absorbing layer  920   a  attached to the first dense or facing layer, a second dense or facing layer  922   b  attached to the first porous sound absorbing layer  920   a,  and a second porous sound absorbing layer  920   b  attached to the second dense or facing layer  922   b.    
     The first insulation member  908 , however, differs from the first insulation member  708  of  FIG.  7    in that the first insulation member  908  is V-shaped, including a first angled portion  930  and a second angled portion  932 . The first insulation member  908  is positioned generally between the pump  904  and the second sidewall  918  with the first angled portion  930  and the second angled portion extending away from the pump  904 . The first insulation member  908  is spaced apart from the second insulation member  910  such that an air gap  919   a  is formed between the first and second insulation members  908 ,  910 . The first insulation member  908  is a distance X 1  from the pump  904  and a distance Y 1  from the second insulation member  910 . The distance X 1  and the distance Y 1  may vary across the length of the first insulation member  908 . 
     In the exemplary embodiment of  FIG.  9   , the first angled portion  930  of the first insulation member  908  extends at an angle α from the second angled portion  932 . In one exemplary embodiment, the angle α is 90 degrees, or approximately 90 degrees. In other embodiments, however, the angle α may be greater than or less than 90 degrees. The first angle portion  930  and the second angled portion  932  may be formed from a single piece of multilayer insulation, or may be two separate portions that are connected or arranged adjacent to each other. 
     The third insulation member  940  may be similar to the first insulation member  908  in that the third insulation member is V-shaped, including a first angled portion  934  and a second angled portion  936 . The third insulation member  940  is positioned generally between the pump  904  and the first sidewall  916  with the first angled portion  934  and the second angled portion  936  extending away from the pump  904 . The third insulation member  940  is spaced apart from the second insulation member  910  such that an air gap  919   b  is formed between the third and second insulation members  940 ,  910 . The third insulation member  940  is a distance X 2  from the pump  904  and a distance Y 2  from the second insulation member  910 . The distance X 2  and the distance Y 2  may vary across the length of the first insulation member  908 . 
     In the exemplary embodiment of  FIG.  9   , the first angled portion  934  of the third insulation member  940  extends at an angle β from the second angled portion  936 . In one exemplary embodiment, the angle β is 90 degrees, or approximately 90 degrees. In other embodiments, however, the angle β may be greater than or less than 90 degrees. In the illustrated embodiment, the angle α of the first insulation member  908  is equal to the angle β of the third insulation member  940 . In other embodiments, however, the angle α may differ from the angle β. The first angle portion  934  and the second angled portion  936  may be formed from a single piece of multilayer insulation, or may be two separate portions that are connected or arranged adjacent to each other. 
     As described with respect to the insulation members  16 ,  18 ,  60 , the arrangement of dense or facing layers, porous layers, and air gaps of the embodiments of  FIGS.  6 - 9    allow a majority of the low frequency sound energy to enter the insulation members, then trap a majority of the low frequency sound energy, and allow only a small portion of the low frequency sound energy to pass through the insulation members. The insulation members can be oriented to reflect much of the sound energy that is not absorbed toward the rear or side walls of the acoustically insulated machine or toward another insulating member. 
     Referring to  FIG.  10   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  1000 . The acoustically insulated dishwasher  1000  illustrated by  FIG.  10    is similar to the dishwasher  400  of  FIG.  5    in that the dishwasher includes a housing  1002 , a pump  1004  and a drive motor  1006  (See  FIG.  13   ), a plate  1008  closing a front side  1010  of the housing, a washing chamber  1018 , and one or more insulation members  1016 . 
     The dishwasher  1000  includes a base portion  1034  that is provided with a plurality of legs  1022  and/or wheels  1023  that support the housing  1002 . The wheels  1023  enable an installer to easily position the dishwasher  1000  and the legs  1022  enable the installer to accurately position/level the dishwasher. The pump  1004  and drive motor  1006  ( FIG.  13   ) are provided in a cavity  1024  between the legs  1022  and below the housing  1002 . The cavity  1024  has a height HC. 
     The dishwasher  1000  includes a wash arm  1014  that is arranged within the washing chamber  1018  above a sump  1015 . The wash arm  1014  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  1000  in a manner known in the art. The pump  1004  ( FIG.  13   ) is connected to the sump  1015 . In operation, the pump  1004  creates a circulating flow of washing fluid within the washing chamber  1018  during a washing operation. 
     The dishwasher  1000  differs from the dishwasher  500  in that the dishwasher  1000  includes an insulation member  1040  with integrated utilities passages (e.g. water and electrical) capable of routing utilities through the insulation member  1040 . The insulation member  1040  can be configured in a variety of ways, such as for example, different shapes, sizes, and materials used. Any configuration that may route utilities through the insulation member may be used. In some embodiments, the insulation member  1040  is multilayered similarly to the insulation members previously described (i.e. one or more dense or facing layers and one or more porous sound absorbing layers). In the exemplary embodiment illustrated in  FIGS.  10  and  11   , the insulation member  1040  is generally L-shaped having a first portion  1042  extending perpendicular to, or generally perpendicular to, a second portion  1044 . 
     Referring to  FIG.  11   , the first portion  1042  includes a first leg  1046  and a second leg  1048  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  1046  is separated from the second leg  1048  by a recess  1050 . The insulation member  1040  includes a rear surface  1052 , the first leg  1046  includes a first front surface  1054 , and the second leg  1048  includes a second front surface  1056 . The insulation member has a length L, a width W, the first portion has a height H 1 , and the second portion has a height H 2  that is greater than the height H 1 . 
     The insulation member  1040  also includes a first utility passage  1060 , a second utility passage  1062 , and a third utility passage  1064 . The number of utility passages may vary in different embodiments of the insulation member  1040 . The utility passages may be configured in a variety of ways. For example, in some embodiments, the utility passages may include fluid conduits suitable for fluid flow through the conduit. The fluid conduits can connect to other fluid conduits, such as for example, a water line or hose, to allow fluid from another fluid conduit to flow into the fluid conduit of the utility passage, or vice versa, and be directed to another location. In some embodiments, the utility passages may also include an electrical wire or wires that can connect to a source of electricity, such as another electrical wire or a power source, to allow electricity from the source of electricity to flow through the electrical wiring and be directed to another location. In some embodiments, the utility passages may be a bore or an enclosed or open channel extending through the insulation member. The bore or channel may be configured to receive a utility line, such as for example, a fluid conduit or electrical wiring, to allow the utility line to extend through the insulation member. 
     The insulation member  1040  can be made from a wide variety of different materials. Examples of suitable materials include, but are not limited to, a non-woven synthetic material, a non-woven natural material and mixtures thereof. The material may include thermoplastic fiber material, thermosetting fiber material, bi-component fiber material and mixtures thereof. Various polymers can be included in the insulation member  1040 , such as for example, material or materials selected from a group consisting of polyolefin, polypropylene, polyethylene, polyester, nylon, rayon, polyethylene terephthalate, polybutylene terephthalate, cotton, kenaf, silk, cellulose, hemp, shoddy, fiberglass, and mixtures thereof. In one exemplary embodiment, the insulation member  1040  can include the same material used for the porous, sound absorbing layer  20  of the insulation members  16 ,  18  of  FIGS.  1 - 2    In one exemplary embodiment, the insulation member  1040  is made from a fine fiber PET material, such as a 2 denier fiber size PET material. 
     In the exemplary embodiment of  FIGS.  10  and  11   , the first utility passage  1060  includes a first fluid conduit  1066  having an inlet  1068  at the rear surface  1052 , and an outlet  1070  extending from the first front surface  1054  of the first leg  1046 . In other embodiments, however, the inlet  1068  and the outlet  1070  may be reversed or may be located in surfaces other than the rear surface  1052  and first front surface  1054 , respectively. The first utility passage  1060  may include a connection at the inlet  1068  capable of fluidly coupling to another fluid conduit, such as for example a water line or hose. For example, the connection may be a hose coupling or other suitable connector. The first fluid conduit  1066  may be a hose or pipe extending through the insulation member  1040  and may to used, for example, to route water to the dishwasher from a water source. 
     The second utility passage  1062  includes a second fluid conduit  1072  having an outlet  1074  at the rear surface  1052  and an inlet  1076  extending from the first front surface  1054  of the first leg  1046 . In other embodiments, however, the outlet  1074  and the inlet  1076  may be reversed or may be located in surfaces other than the rear surface  1052  and first front surface  1054 , respectively. The first utility passage  1062  may include a connection at the outlet  1074  capable of fluidly coupling to another fluid conduit, such as for example, a water line or hose. For example, the connection may be a hose coupling or other suitable connector. The second fluid conduit  1072  may be a hose or pipe extending through the insulation member  1040  and may to used, for example, to route water from the dishwasher to a drain. 
     The third utility passage  1064  includes an electrical conductor, such as for example electrical wiring, having an electrical connection  1078  at the rear surface  1052  and an electrical lead  1080  at or extending from the second front surface  1056  of the second leg  1048 . The electrical connection  1078  may be configured in any suitable manner to electrically couple to an electrical source. The third utility passage  1064  may be used, for example, to route electrical power to the dishwasher  1000 . 
       FIG.  12    illustrates another exemplary embodiment of an insulation member  1240  with integrated utilities passages (e.g. water and electrical). The insulation member  1240  is similar to the insulation member  1040  of  FIGS.  10  and  11    in that the insulation member  1240  includes a first portion  1242  extending perpendicular to, or generally perpendicular to, a second portion  1244 . The first portion  1242  includes a first leg  1246  and a second leg  1248  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  1246  is separated from the second leg  1248  by a recess  1250 . The insulation member  1240  includes a rear surface  1252 , the first leg  1246  includes a first front surface  1254 , and the second leg  1248  includes a second front surface  1256 . The insulation member  1240  has a length L, a width W, the first portion  1242  has a height H 1 , and the second portion  1244  has a height H 2  that is greater than the height H 1 . In the exemplary embodiment, the height H 1  is less than the height HC of the cavity  1024  ( FIG.  10   ) such that the first portion  1242  may fit within the cavity. 
     The insulation member  1240  also includes a first utility passage  1260  and a second utility passage  1262  extending from the rear surface  1252  to the first front surface  1254 , and a third utility passage  1264  extending from the rear surface  1252  to the second front surface  1256 . The first utility passage  1260  includes a fluid conduit  1266  having an inlet  1268  at the rear surface  1252  and an outlet  1270  extending from the first front surface  1254  of the first leg  1246 . The second utility passage  1262  includes a fluid conduit  1072  having an outlet  1274  at the rear surface  1252  and an inlet  1276  extending from the first front surface  1054  of the first leg  1246 . The third utility passage  1264  includes an electrical line, such as for example electrical wiring, having an electrical connection  1278  at the rear surface  1252  and an electrical lead  1280  at or extending from the second front surface  1256  of the second leg  1248 . In other embodiments, however, the inlet, the outlet, and the connections for each of the utility passages may be reversed or may be located in surfaces other than the rear surface and the first front surface. 
     The insulation member  1240 , however, differs from the insulation member  1040  in that the insulation member  1240  is separated along its length L into a top portion  1282  and a bottom portion  1284 . 
     The top portion  1282  and the bottom portion  1284  may be separate, unconnected portions or may be connected but separable, such as for example, connected by a hinge (not shown) in a clamshell arrangement. In the illustrated embodiment of  FIG.  12   , the top portion  1282  and the bottom portion  1284  bisect the first portion  1242  such that the height of the top portion  1282  in the first portion  1242  is ½H 1  and the height of the bottom portion  1284  in the first portion  1242  is ½H 1 . In other embodiment, however, the top portion  1282  and the bottom portion  1284  may each have a height that is greater than or less than ½H 1 . 
     The interface between the top portion  1282  and the bottom portion  1284  intersects at least one of the utility passages  1260 ,  1262 ,  1264 . In the illustrated embodiment of  FIG.  12   , the interface between the top portion  1282  and the bottom portion  1284  intersects all of the utility passages  1260 ,  1262 ,  1264  such that separating the top portion from the bottom portion grants access to the length of the utility passages  1260 ,  1262 ,  1264 . 
       FIGS.  13 - 17    illustrate an exemplary acoustically insulated machine assembly  1300  including the dishwasher  1000 , the insulation member  1040 , and a cabinet or wall space  1301 . The cabinet or wall space  1301  includes a rear wall  1302 , a first side wall  1304 , and a second sidewall  1306  that form a recess  1308  for receiving the dishwasher  1000 . Extending from the cabinet or wall space  1301  are one or more utility lines. In the illustrated embodiment, a water supply line  1310 , a water drain line  1312 , and an electrical supply line  1314  extend from the cabinet or wall space  1301 . In other embodiments, however, any number of utility lines may be associated with the acoustically insulated machine assembly  1300 . 
     The dishwasher  1000  includes a water inlet  1320 , a water outlet  1322 , and an electrical power connection  1324 . The water inlet  1320 , the water outlet  1322 , and the electrical power connection  1324  may be accessible from the cavity  1024  located between the legs  1022  and below the housing  1004  ( FIG.  10   ). 
     Referring to  FIGS.  13  and  14   , an exemplary assembly process for the dishwasher assembly  1300  may begin with the insulation member  1040  being connected to the one or more utility lines. In particular, the water supply line  1310  is fluidly coupled to the inlet  1068 , the water drain line  1312  is fluidly coupled to the outlet  1074 , and the electrical supply line  1314  is electrically connected to the electrical connection  1078  at the rear surface  1052  of the insulation member  1040 . Thus, water exiting the water supply line  1310  may enter the first fluid conduit  1066  through the inlet  1068 , water exiting the second fluid conduit  1072  may enter the water drain line  1312  through the outlet  1074 , and electricity may be routed from the electrical supply line  1314  to the electrical conductor  1064  via the electrical connection  1078 . 
     As shown in  FIG.  15   , once the water inlet  1320 , the water outlet  1322 , and the electrical power connection  1324  have been operatively coupled to the insulation member  1040 , the insulation member  1040  may be positioned in the recess  1308  with the rear surface  1052  adjacent the rear wall  1302  and the first front surface  1054  and second front surface  1056  facing outward from the recess. In the exemplary embodiment, the first fluid conduit  1066  and the second fluid conduit  1072 , and the electrical conductor  1064  extend outward from the first front surface  1054  and second front surface  1056 , respectively, to facilitate being connected to the dishwasher  1000 . 
     As shown in  FIGS.  16    an  17 , once the insulation member  1040  is positioned within the recess  1308 , the dishwasher  1000  may be positioned in the recess over top of the insulation member  1040  such that the insulation member is positioned in the cavity  1024  between the legs  1022  and below the housing  1002  ( FIG.  10   ). In this position, the first front surface  1054  and second front surface  1056  are near or adjacent the front side  1010  of the housing  1002  and the one or more insulation members  1016 , when installed. 
     Likewise, in this position, the pump  1004  and the motor  1006  can be received in the recess  1050  between the first leg  1046  and the second leg  1048 . The second portion  1044  of the insulation member  1040  may extend upward along or adjacent a portion of the back surface  1052  of the dishwasher  1000 . The first fluid conduit  1066  may then be connected to the water inlet  1320 , the second fluid conduit  1072  may be connected to the water outlet  1322 , and the electrical conductor  1064  may be connected to the electrical power connection  1324  on the dishwasher  1000 . 
     When installed as described, the insulation member  1040  cooperates with the one or more insulation members  1016  to fully, or at least partially, encircle the pump  1004  and the motor  1006 . Thus, the insulation member  1040 , along with the one or more insulation members  1016 , provides effective sound absorption and provides a convenient way to route and connect utilities, such as water and electricity, to the dishwasher  1000 . 
     Referring to  FIG.  18   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  1800 . The acoustically insulated dishwasher  1800  illustrated by  FIG.  18    is similar to the dishwasher  1000  of  FIG.  10    in that the dishwasher includes a housing  1802 , a pump  1804  and a drive motor  1806  (See  FIG.  22   ), a plate  1808  closing a front side  1810  of the housing, a washing chamber  1818 , and one or more insulation members  1816 . 
     The dishwasher  1800  includes a base portion  1834  that is provided with a plurality of legs  1822  and/or wheels  1823  that support the housing  1802 . The wheels  1823  enable an installer to easily position the dishwasher  1800  and the legs  1822  enable the installer to accurately position/level the dishwasher. The pump  1804  and drive motor  1806  ( FIG.  22   ) are provided in a cavity  1824  between the legs  1822  and below the housing  1802 . The cavity  1824  has a height HC. 
     The dishwasher  1800  includes a wash arm  1814  that is arranged within the washing chamber  1818  above a sump  1815 . The wash arm  1814  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  1800  in a manner known in the art. The pump  1804  ( FIG.  22   ) is connected to the sump  1815 . In operation, the pump  1804  creates a circulating flow of washing fluid within the washing chamber  1818  during a washing operation. 
     The dishwasher  1800  also includes an insulation member  1840  with integrated utilities passages (e.g. water and electrical) that is similar to the insulation member  1040  of  FIG.  10   . The insulation member  1840 , however, differs from the insulation member  1040  in that the insulation member  1840  is not generally L-shaped (i.e. does not include a first portion extending perpendicular to, or generally perpendicular to, a second portion). In addition, the insulation member  1840  includes an enclosed channel extending through the insulation member to receive and allow a utility line to be received in the channel and to extend through the insulation member. 
     Referring to  FIG.  19   , the insulation member  1840  is generally planar and includes a first leg  1846  and a second leg  1848  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  1846  is separated from the second leg  1848  by a recess  1850 . The insulation member  1840  includes a rear surface  1852 , the first leg  1846  includes a first front surface  1854 , and the second leg  1848  includes a second front surface  1856 . The insulation member  1840  has a length L, a width W, and a height H. The height H can be less that the height HC of the cavity  1820  to allow the insulation member to fit within the cavity. 
     The insulation member  1840  also includes a first utility passage  1860 , a second utility passage  1862 , and a third utility passage  1864 . The number of utility passages may vary in different embodiments of the insulation member  1840 . The utility passages may be configured in a variety of ways. For example, in some embodiments, the utility passages may include fluid conduits that can connect to other fluid conduits, such as for example, a water line or hose, to allow fluid from the hose to flow into the fluid conduit, or vice versa, and be directed to another location. The utility passages may also include an electrical wire or wires that can connect to a source of electricity, such as another electrical wire or a power source, to allow electricity from the source of electricity to flow through the electrical wiring and be directed to another location. The utility passages may also include a bore or channel extending through the insulation member. The bore or channel may be configured to allow a utility line, such as for example, a fluid conduit or electrical wiring, to extend through the passage. 
     In the exemplary embodiment of  FIGS.  19  and  20   , the first utility passage  1860  includes an enclosed channel  1866  having an inlet  1868  at the rear surface  1852 , and an outlet  1870  extending from the first front surface  1854  of the first leg  1846 . In other embodiments, however, the inlet  1868  and the outlet  1870  may be reversed or may be located in surfaces other than the rear surface  1852  and the first front surface  1854 , respectively. 
     The second utility passage  1862  includes an enclosed channel  1872  having an outlet  1874  at the rear surface  1852 , and an inlet  1876  extending from the first front surface  1854  of the first leg  1846 . In other embodiments, however, the outlet  1874  and the inlet  1876  may be reversed or may be located in surfaces other than the rear surface  1852  and the first front surface  1854 , respectively. 
     The third utility passage  1864  includes an enclosed channel  1877  having an inlet  1878  at the rear surface  1852  and an outlet  1880  at the second front surface  1856  of the second leg  1848 . In other embodiments, however, the inlet  1878  and the outlet  1880  may be reversed or may be located in surfaces other than the rear surface  1852  and the second front surface  1856 , respectively. 
       FIG.  20    illustrates another exemplary embodiment of an insulation member  2040  with integrated utilities passages (e.g. water and electrical). The insulation member  2040  is similar to the insulation member  1840  of  FIG.  19    in that the insulation member  2040  is planar, or generally planer, and includes a first leg  2046  and a second leg  2048  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  2046  is separated from the second leg  2048  by a recess  2050 . The insulation member  2040  includes a rear surface  2052 , the first leg  2046  includes a first front surface  2054 , and the second leg  2048  includes a second front surface  2056 . The insulation member  2040  has a length L, a width W, and has a height H. 
     The insulation member  2040  also includes a first utility passage  2060  and a second utility passage  2062  extending from the rear surface  2052  to the first front surface  2054 , and a third utility passage  2064  extending from the rear surface  2052  to the second front surface  2056 . The first utility passage  2060  includes an enclosed channel  2066  having an inlet  2068  at the rear surface  2052  and an outlet  2070  at the first front surface  2054  of the first leg  2046 . The second utility passage  2062  includes an enclosed channel  2072  having an outlet  2074  at the rear surface  2052  and an inlet  2076  at the first front surface  2054  of the first leg  2046 . The third utility passage  2064  includes an enclosed channel  2077  having an inlet  2078  at the rear surface  2052  and an outlet  2080  at the from second front surface  2056  of the second leg  2048 . 
     The insulation member  2040 , however, differs from the insulation member  1840  of  FIG.  19    in that the insulation member  2040  is separated along its length L into a top portion  2082  and a bottom portion  2084 , similar to the insulation member  1240  of  FIG.  12   . Thus, the top portion  2082  and the bottom portion  2084  may be separate, unconnected portions or may be connected but separable, such as for example, connected by a hinge (not shown) in a clamshell arrangement. The top portion  2082  and the bottom portion  2084  may bisect the insulation member  2040  such that the height of the top portion  2082  and the bottom portion  2084  is ½H. In other embodiment, however, the top portion  2082  and the bottom portion  2084  may each have a height that is greater than or less than ½H. 
     The interface between the top portion  2082  and the bottom portion  2084  intersects at least one of the utility passages  2060 ,  2062 ,  2064 . In the illustrated embodiment of  FIG.  20   , the interface between the top portion  2082  and the bottom portion  2084  intersects all of the utility passages  2060 ,  2062 ,  2064  such that separating the top portion from the bottom portion grants access to the length of the enclosed channels  2066 ,  2072 ,  2077 . 
       FIG.  21    illustrates another exemplary embodiment of an insulation member  2140  with integrated utilities passages (e.g. water and electrical). The insulation member  2140  is similar to the insulation member  1840  of  FIG.  19    in that the insulation member  2140  is planar, or generally planer, and includes a first leg  2146  and a second leg  2148  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  2146  is separated from the second leg  2148  by a recess  2050 . The insulation member  2140  includes a rear surface  2152 , the first leg  2146  includes a first front surface  2154 , and the second leg  2148  includes a second front surface  2156 . The insulation member  2140  has a length L, a width W, and has a height H. 
     The insulation member  2140  also includes a first utility passage  2160  and a second utility passage  2162  extending from the rear surface  2152  to the first front surface  2154 , and a third utility passage  2164  extending from the rear surface  2152  to the second front surface  2156 . 
     The insulation member  2140 , however, differs from the insulation member  1840  of  FIG.  19    in that first utility passage  2160 , the second utility passage  2162  and the third utility passage  2164  are configured as channels that are open along a top side  2165  of the insulation member  2140 . In particular, the first utility passage  2160  includes an open channel  2166  having an inlet  2168  at the rear surface  2152  and an outlet  2170  at the first front surface  2154  of the first leg  2146 . The second utility passage  2162  includes an open channel  2172  having an outlet  2174  at the rear surface  2152  and an inlet  2176  at the first front surface  2154  of the first leg  2146 . The third utility passage  2164  includes an open channel  2177  having an inlet  2178  at the rear surface  2152  and an outlet  2180  at the from second front surface  2156  of the second leg  2148 . 
       FIGS.  22 - 24    illustrate an exemplary acoustically insulated machine assembly  2200  including the dishwasher  1800 , the insulation member  1840 , and a cabinet or wall space  2201 . The cabinet or wall space  2201  includes a rear wall  2202 , a first side wall  2204 , and a second sidewall  2206  that form a recess  2208  for receiving the dishwasher  1800 . Extending from the cabinet or wall space  2201  are one or more utility lines. In the illustrated embodiment, a water supply line  2210 , a water drain line  2212 , and an electrical supply line  2214  extend from the cabinet or wall space  2201 . In other embodiments, however, any number of utility lines may be associated with the acoustically insulated machine assembly  2200 . 
     The dishwasher  1800  includes a water inlet  2220 , a water outlet  2222 , and an electrical power connection  2224 . The water inlet  2220 , the water outlet  2222 , and the electrical power connection  2224  may be accessible from the cavity  1824  located between the legs  1822  and below the housing  1804  ( FIG.  18   ). 
     Referring to  FIG.  22   , an exemplary assembly process for the dishwasher assembly  2200  may begin with the insulation member  1840  being positioned in the recess  2208 . As the insulation member  1840  is positioned in the recess  2208 , the utility lines may be received through the utility passages. In particular, the water supply line  2210  may received through the inlet  1868 , extend through the first enclosed passage  1866 , and extend out of the outlet  1870 . The water drain line  2212  may be received by the outlet  1874 , extend through the second enclosed passage  1872 , and extend out of the inlet  1876 . The electrical supply line  2214  may be received by the inlet  1878 , extend through the third enclosed passage  1877 , and extend out of the outlet  1880 . 
     If the exemplary insulation member  2040  of  FIG.  20    is used in dishwasher assembly  2200  in place of insulation member  1840 , the top portion  2082  may be separated from the bottom portion  2084  providing access to the first utility passage  2060 , the second utility passage  2062 , and the third utility passage  2064  along the entire length of the passages. Thus, the water supply line  2210 , water drain line  2212 , the electrical supply line  2214  may be laid into the exposed channels, respectively, rather than fed through the passages via the inlets or outlets. 
     Likewise, if the exemplary insulation member  2140  of  FIG.  21    is used in dishwasher assembly  2200  in place of insulation member  1840 , the water supply line  2210 , water drain line  2212 , the electrical supply line  2214  may be laid into the open channels  2166 ,  2172 ,  2177 , respectively, rather than feed through the passages via the inlets or outlets. 
     As shown in  FIGS.  23  and  24   , once the insulation member  1840  is positioned within the recess  2208 , the dishwasher  1800  may be positioned in the recess over top of the insulation member  1840  such that the insulation member is positioned in the cavity  1824  between the legs  1822  and below the housing  1802  ( FIG.  10   ). In this position, the first front surface  1854  and second front surface  1856  are near or adjacent the front side  1810  of the housing  1802  and the one or more insulation members  1816 , when installed. 
     Likewise, in this position, the pump  1804  and the motor  1806  can be received in the recess  1850  between the first leg  1846  and the second leg  1848 . The water supply line  2210  may then be connected to the water inlet  2220 , the water drain line  2212  may be connected to the water outlet  2222 , and the electrical supply line  2214  may be connected to the electrical power connection  2224  on the dishwasher  1800 . 
     Referring to  FIG.  25   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  2500 . The acoustically insulated dishwasher  2500  illustrated by  FIG.  25    is similar to the dishwasher  1800  of  FIG.  18    in that the dishwasher  2500  includes a housing  2502 , a pump  2504  and a drive motor  2506  (See  FIG.  26   ), a plate  2508  closing a front side  2510  of the housing, and a washing chamber  2518 . 
     The dishwasher  2500  includes a base portion  2534  that is provided with a plurality of legs  2522  and/or wheels  2523  that support the housing  2502 . The wheels  2523  enable an installer to easily position the dishwasher  2500  and the legs  2522  enable the installer to accurately position/level the dishwasher. The pump  2504  and drive motor  2506  ( FIG.  26   ) are provided in a cavity  2524  between the legs  2522  and below the housing  2502 . The cavity  2524  has a height HC. 
     The dishwasher  2500  includes a wash arm  2514  that is arranged within the washing chamber  2518  above a sump  2515 . The wash arm  2514  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  1800  in a manner known in the art. The pump  2504  ( FIG.  26   ) is connected to the sump  2515 . In operation, the pump  2504  creates a circulating flow of washing fluid within the washing chamber  2518  during a washing operation. 
     The dishwasher  2500  also includes one or more insulation members  2516  that is similar to the one or more insulation members  1816  of  FIG.  18   . The insulation members  2516 , however, differ from the insulation members  1816  in that the insulation members  2516  include integrated utilities passages (e.g. water and electrical). 
     The insulation member  2540  includes a first utility passage  2560  and a second utility passage  2564 . The number of utility passages may vary in different embodiments of the insulation member  2540 . The utility passages may be configured in a variety of ways. For example, in some embodiments, the utility passages may include fluid conduits that can connect to other fluid conduits, such as for example, a hose, to allow fluid from the hose to flow into the fluid conduit, or vice versa, and be directed to another location. The utility passages may also include an electrical wire or wires that can connect to a source of electricity, such as another electrical wire or a power source, to allow electricity from the source of electricity to flow through the electrical wiring and be directed to another location. The utility passages may also include a bore or channel extending through the insulation member. The bore or channel may be configured to allow a utility line, such as for example, a fluid conduit or electrical wiring, to extend through the passage. 
     The insulation member  2540  may take a wide variety of different forms. In the exemplary embodiment illustrated by  FIGS.  25 - 28   , the insulation member  2540 . For example, the insulation member  2540  may have any of the multi-layer configurations of the insulation members described above. For example, the insulation member  2540  may include one or more porous, sound absorbing layers and one or more dense or facing layers attached to a face or faces of one or more sound absorbing layers. In other embodiments, however, the insulation member  2540  may be configured differently. 
     In the exemplary embodiment of  FIGS.  25 - 28   , the insulation member  2540  is multilayered and includes a first dense or facing layer  2622   a  that faces toward the pump  2504  and the drive motor  2506 , a first porous sound absorbing layer  2620   a  attached to the first dense or facing layer, a second dense or facing layer  2622   b  attached to the first porous sound absorbing layer  2620   a,  and a second porous sound absorbing layer  2620   b  attached to the second dense or facing layer  2622   b.  The first insulation member  2608  has a first length L 1  and has a generally linear or planar configuration. 
     The first utility passage  2560  includes a channel or recess  2666 , which may be open or enclosed, that extends into the insulation member  2540 . For example, in the exemplary embodiment of  FIGS.  26 - 28   , first utility passage  2560  includes an inlet  2630  at the first dense or facing layer  2622   a.  The channel or recess  2566  extends through the first dense or facing layer  2622   a,  through the first sound absorbing layer  2620   a,  through the second dense or facing layer  2622   b  and into the second sound absorbing layer  2620   b.  In the exemplary embodiment, the channel  2566  exits the insulation member  2540  through a top surface  2570  ( FIG.  25   ). In other embodiments, however, each of the inlet to the channel  2566  and the outlet to the channel may be formed in any surface of the insulation member  2540 . 
     The second utility passage  2564  includes a channel or recess  2566 , which may be open or enclosed, that extends into the insulation member  2540 . For example, in the exemplary embodiment of  FIGS.  26 - 28   , first utility passage  2560  includes an inlet  2630  at the first dense or facing layer  2622   a.  The channel or recess  2566  extends through the first dense or facing layer  2622   a,  through the first sound absorbing layer  2620   a,  through the second dense or facing layer  2622   b  and into the second sound absorbing layer  2620   b.  In the exemplary embodiment, the channel  2566  exits the insulation member  2540  through a top surface  2570  ( FIG.  25   ). In other embodiments, however, each of the inlet to the channel  2566  and the outlet to the channel may be formed in any surface of the insulation member  2540 . 
       FIGS.  26 - 28    illustrate an exemplary acoustically insulated machine assembly  2600  including the dishwasher  2500 , the insulation member  2516 , and a cabinet or wall space  2601 . The cabinet or wall space  2601  includes a rear wall  2602 , a first side wall  2604 , and a second sidewall  2606  that form a recess  2608  for receiving the dishwasher  2500 . Extending from the cabinet or wall space  2601  are one or more utility lines. In the illustrated embodiment, a water supply line  2610 , a water drain line  2612 , and an electrical supply line  2614  extend from the cabinet or wall space  2601 . In other embodiments, however, any number of utility lines may be associated with the acoustically insulated machine assembly  2600 . 
     The dishwasher  2500  includes a water inlet  2624 , a water outlet  2626 , and an electrical power connection  2628 . The water inlet  2624 , the water outlet  2626 , and the electrical power connection  2628  may be accessible from the cavity  2524  located between the legs  2522  and below the housing  2504  ( FIG.  25   ). The cavity  2524  has a height HC. 
     Referring to  FIG.  28 - 27   , an exemplary assembly process for the dishwasher assembly  2600  may begin with the dishwasher  2500  being positioned in the recess  2608 . The utilities lines  2610 ,  2612 ,  2614  are positioned in the cavity  2524  ( FIG.  25   ) extending outward from the rear wall  2602  under the dishwasher  2500  and may extend outward from the front side  2510  of the housing  2502 . 
     As shown in  FIG.  28   , the insulation member  2500  may then be positioned along the front side  2510  of the dishwasher or in the cavity  2524  under the housing  2502  along the front side  2510 . In this position, the water supply line  2610  may be routed through the first utility passage  2560  and connected to the water inlet  2624  and the electrical supply line  2614  may be routed through the second utility passage  2564  and connected to the electrical power connection  2628 . 
     Referring to  FIG.  29   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  2900 . The dishwasher  2900  is similar to the dishwasher  600  of  FIG.  6    in that the dishwasher  2900  includes a cabinet or housing  2902 , a pump  2904  and a drive motor  2906  disposed within the cabinet, a first insulation member  2908 , and a second insulation member  2910 . The cabinet  2902  includes a front wall  2912 , a rear wall  2914  spaced apart and generally parallel to the front wall, a first side wall  2916  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  2918  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     As with the second insulation layer  610  of the dishwasher  600 , the second insulation member  2910  may be multilayered. The first insulation layer  2908 , however, includes a first dense or facing layer  2922   a  that faces toward the pump  2904  and the drive motor  2906 , but does not include the first porous sound absorbing layer, the second dense or facing layer or the second porous sound absorbing layer of the first insulation layer  608  of the dishwasher  600 . The first insulation member  2908  has a first length L 1 , has a generally linear or planar configuration, and is a distance Y from the pump  2904 . 
     The second insulation member  2910  includes a first dense or facing layer  2922   a  that faces toward the pump  2904  and the drive motor  2906 , a first porous sound absorbing layer  2920   a  attached to the first dense or facing layer, a second dense or facing layer  2922   b  attached to the first porous sound absorbing layer  2920   a,  and a second porous sound absorbing layer  2920   b  attached to the second dense or facing layer  2922   b.  The second insulation member  2908  has a second length L 2 , has a generally linear or planar configuration, and is a distance X from the first insulation member  2908 . In the exemplary embodiment of  FIG.  29   , the first length L 1  is smaller than the second length L 2  and the distance X is greater than the distance Y. In other embodiments, however, the first length L 1  may be equal to or greater than the second length L 2  and the distance X may be equal to or less than the distance Y. 
     The first insulation member  2908  is arranged parallel, or generally parallel, to the second insulation member  2910  and the front wall  2912 . In other embodiments, however, the first insulation member  2908  may be other than parallel to the second insulation member  2910  and/or the front wall  2912 . The first insulation member  2908  is spaced apart from the second insulation member  2910  such that an air gap  2919  is formed between the first and second insulation members  2908 ,  2910 . 
     Referring to  FIG.  30   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  3000 . The dishwasher  3000  is similar to the dishwasher  2900  of  FIG.  29    in that the dishwasher  3000  includes a cabinet or housing  3002 , a pump  3004  and a drive motor  3006  disposed within the cabinet, a first insulation member  3008 , and a second insulation member  3010 . The cabinet  3002  includes a front wall  3012 , a rear wall  3014  spaced apart and generally parallel to the front wall, a first side wall  3016  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  3018  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     As with the dishwasher  2900 , the second insulation member  3010  maybe multilayered and includes a first dense or facing layer  3022   a  that faces toward the pump  3004  and the drive motor  3006 , a first porous sound absorbing layer  3020   a  attached to the first dense or facing layer, a second dense or facing layer  3022   b  attached to the first porous sound absorbing layer  3020   a,  and a second porous sound absorbing layer  3020   b  attached to the second dense or facing layer  3022   b.    
     The first insulation layer  3008  includes a first dense or facing layer  3022   a,  but does not include the first porous sound absorbing layer, the second dense or facing layer, or the second porous sound absorbing layer of the second insulation layer  3010 . The first insulation member  3008  has a first length L 1 , has a generally linear or planar configuration, and is a distance Y from the pump  3004 . 
     The second insulation member  3010  has a second length L 2 , has a generally linear or planar configuration, and is a distance X from the first insulation member  3008 . In the exemplary embodiment of  FIG.  30   , the first length L 1  is smaller than the second length L 2  and the distance X is greater than the distance Y. In other embodiments, however, the first length L 1  may be equal to or greater than the second length L 2  and the distance X may be equal to or less than the distance Y. 
     The first insulation member  3008  is arranged parallel, or generally parallel, to the second insulation member  3010  and the front wall  3012 . In other embodiments, however, the first insulation member  3008  may be other than parallel to the second insulation member  3010  and/or the front wall  3012 . The first insulation member  3008  is spaced apart from the second insulation member  3010  such that an air gap  3019  is formed between the first and second insulation members  3008 ,  3010 . 
     The dishwasher  3000 , however, differs from the dishwasher  2900  in that at least one of the pump  3004  and the drive motor  3006  are surrounded by one or more insulation members. The one or more insulation members may be configured in a variety of ways, such as, for example, but not limited to, the size, the shape, and the composition of each of the one or more insulation members, the size and the shape of the perimeter formed by the insulation members, the orientation of the one or more insulation members, and the number of insulation members used to surround the pump and/or the drive motor may vary in different embodiments. In the illustrated embodiment, a third insulation member  3030 , a fourth insulation member  3032 , and a fifth insulation member  3034 , in conjunction with the first insulation member  3008 , form a rectangular perimeter around the pump  3004  and the drive motor  3006 . In other embodiments, however, more or less than four insulation members may be used and the shape of the perimeter can be other than rectangular. 
     In the illustrated embodiment, the third insulation member  3030 , the fourth insulation member  3032 , and the fifth insulation member  3034  have a length equal to the length L 1  of the first insulation member  3008 . In other embodiments, however, one or more of the first insulation member  3008 , the third insulation member  3030 , the fourth insulation member  3032 , and the fifth insulation member  3034  may have a different length than any other of the insulation members. As with the first insulation member  3008 , the third insulation member  3030 , the fourth insulation member  3032 , and the fifth insulation member  3034  includes a first dense or facing layer  3022   a,  but do not include a first porous sound absorbing layer, a second dense or facing layer or a second porous sound absorbing layer as the second insulation layer  3010  does. In other embodiments, however, one or more of the insulation members  3008 ,  3030 ,  3032 ,  3034  may have multiple layers. 
     Referring to  FIG.  31   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  3100 . The dishwasher  3100  is similar to the dishwasher  900  of  FIG.  9    in that the dishwasher  3100  includes a cabinet or housing  3102 , a pump  3104  and a drive motor  3106  disposed within the cabinet. The cabinet  3102  includes a front wall  3112 , a rear wall  3114  spaced apart and generally parallel to the front wall, a first side wall  3116  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  3118  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The dishwasher  3100  includes a first insulation member  3108 , a second insulation member  3110 , and a third insulation member  3140 . Each of the first insulation member  3108 , the second insulation member  3110 , and the third insulation member  3140  can be multilayered. The second insulation member  3110  includes a first dense or facing layer  3122   a  that faces toward the pump  3104  and the drive motor  3106  and a first porous sound absorbing layer  3120   a  attached to the first dense or facing layer. The second insulation member  3110  has a generally linear or planar configuration and is arranged generally parallel to the front wall  3112 . In the illustrated embodiment, unlike the second insulation layer  910  of the dishwasher  900 , the second insulation member  3110  does not include a second dense or facing layer and a second porous sound absorbing layer. In other embodiments, however, the second insulation member  3110  can have multiple dense or facing layers and porous sound absorbing layers. 
     The first insulation member  3108  includes a first dense or facing layer  3122   a  that faces toward the pump  3104  and the drive motor  3106  and a first porous sound absorbing layer  3120   a  attached to the first dense or facing layer. The third insulation member  3140  includes a first dense or facing layer  3122   a  that faces toward the pump  3104  and the drive motor  3106  and a first porous sound absorbing layer  3120   a  attached to the first dense or facing layer. 
     The first insulation member  3108  and the third insulation layer  3140 , however, differs from the first insulation member  908  and second insulation member  940  of  FIG.  9    in that the first insulation member  3108  and the third insulation member  3140  do not include a second dense or facing layer or a second porous sound absorbing layer. In addition, the first insulation member  3108  and the third insulation member  3140  are wedge shaped. In other embodiments, however, the second insulation member  3108  can have multiple dense or facing layers and porous sound absorbing layers and the first insulation member  3108  and the third insulation member  3140  may be other than wedge-shaped. 
     In the illustrated embodiment, the first insulation member  3108  is positioned at the intersection of the front wall  3112  and the second side wall  3118 , the third insulation member  3140  is positioned at the intersection of the front wall  3112  and the first side wall  3116 , and the second insulation member  3110  is positioned between the first insulation member  3108  and the third insulation member  3140 . In other embodiments, the insulation members  3108 ,  3110 ,  3140  may be arranged differently with respect to the cabinet  3102  and/or each other. 
     The first insulation member  3108  has an angled face  3142  and the second insulation member  3140  has an angled face  3144 . The angled face  3142  extends at an angle α relative to the second side wall  3118  and the angled face  3144  extends at an angle β relative to the first side wall  3116 . In one exemplary embodiment, the angle α is 30 degrees, or approximately 30 degrees and the angle β is 30 degrees, or approximately 30 degrees. In other embodiments, however, the angle α and/or the angle β may be greater than or less than 30 degrees. In some embodiments, the angle α and the angle β may be different from each other. 
     Referring to  FIG.  32   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  3200 . The dishwasher  3200  is similar to the dishwasher  700  of  FIG.  7    in that the dishwasher  3200  includes a cabinet or housing  3202 , a pump  3204  and a drive motor  3206  disposed within the cabinet. The cabinet  3202  includes a front wall  3212 , a rear wall  3214  spaced apart and generally parallel to the front wall, a first side wall  3216  generally perpendicular to and connecting the front wall to the back wall, and a second side wall  3218  generally parallel to and spaced apart from the first side wall and connecting the front wall to the back wall. 
     The dishwasher  3200  includes a first insulation member  3208 . In the exemplary embodiment, the first insulation member  3208  is multilayered, is curved or includes angled portions, and partially surrounds the pump  3204  and/or the drive motor  3206 . Unlike the dishwasher  700 , the dishwasher  3200  does not include a second insulation member. In other embodiments, however, the dishwasher  3200  may include multiple insulation members. 
     The first insulation member  3208  includes a first dense or facing layer  3222   a  facing the pump  3204  and/or the drive motor  3206 , a first porous sound absorbing layer  3220   a  attached to the first dense or facing layer, a second dense or facing layer  3222   b  attached to the first porous sound absorbing layer  3220   a,  a second porous sound absorbing layer  3220   b  attached to the second dense or facing layer  3222   b,  a third dense or facing layer  3422   c  attached to the second porous sound absorbing layer  3220   b,  and a third porous sound absorbing layer  3220   c  attached to the third dense or facing layer  3222   c.    
     The first insulation member  3208  is V-shaped, including a first angled portion  3230  and a second angled portion  3232 . In the illustrated embodiment, the intersection between the first angled portion  3230  and the second angled portion  3232  is rounded or curved and the first angled portion  3230  and the second angled portion  3232  are planar, or substantially planar. In other embodiments, however, the first angled portion  3230  and the second angled portion  3232  may be curved and the intersection between the first angled portion  3230  and the second angled portion  3232  may be a point and/or the first angled portion  3230 . 
     The intersection between the first angled portion  3230  and the second angled portion  3232  is positioned generally between the pump  3204  and the front wall  3212  with the first angled portion  3230  and the second angled portion  3232  extending away from the front wall  3212 . In the exemplary embodiment, the first angled portion  3230  extends at an angle α from the second angled portion  3232 . In one exemplary embodiment, the angle α is 90 degrees, or approximately 90 degrees. In other embodiments, however, the angle α may be greater than or less than 90 degrees. The intersection between the first angled portion  3230  and the second angled portion  3232  is a distance X from the pump  3204  and a distance Y from the front wall  3212 . The distance X and the distance Y may vary in different embodiments of the dishwasher  3200 . In the exemplary embodiment, the distance X is less than the distance Y. In other embodiments, however, the distance X may be the same or greater than the distance Y. 
     Referring to  FIGS.  33 - 34   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  3300 . The acoustically insulated dishwasher  3300  illustrated by  FIG.  33 - 34    is similar to the dishwasher  400  of  FIG.  5    in that the dishwasher includes a housing  3302  having a front side  3310 , a pump  3304 , a drive motor  3306 , a washing chamber  3318 , and one or more insulation members  3316 . 
     The dishwasher  3300  includes a base portion  3334  that is provided with a plurality of legs  3321  and/or wheels  3323  that support the housing  3302  on a surface  3305 , such as a floor ( FIG.  34   ). The wheels  3323  enable an installer to easily position the dishwasher  3300  and the legs  3321  enable the installer to accurately position/level the dishwasher. The pump  3304  and drive motor  3306  are provided in a cavity  3324  between the legs  3321  and below a bottom surface  3312  of the housing  3302 . The cavity  3324  has a height HC. 
     The dishwasher  3300  includes a wash arm  3314  that is arranged within the washing chamber  3318  above a sump  3315 . The wash arm  3314  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  3300  in a manner known in the art. The pump  3304  is connected to the sump  3315 . In operation, the pump  3304  creates a circulating flow of washing fluid within the washing chamber  3318  during a washing operation. As shown in  FIG.  33   , the dishwasher  3300  may include structure capable of supporting one or more insulation members  3316  within or adjacent the cavity  3324 . For example, the base portion  3334  or the legs  3321  may include notches  3326  or slots  3328  below the bottom surface  3312  of the housing  3302 . As shown in  FIG.  34   , the shape of the sump  3315  may extend downward into the cavity  3324 . 
     The insulation member  3316  is configured to be installed in the cavity  3324  and to be held in place by being received (e.g. snapping) into the notches  3326  and/or slots  3328 . The insulation member  3316  may also be configured or contoured to fit around the sump  3315 , the pump  3304 , and/or the drive motor  3306 . Furthermore, the insulation member  3316  may be configured to act as a thermal insulation in addition to acting as an acoustic insulation. The insulation member  3316  may be configured in a variety of ways. Any configuration that allows the notches  3326  and/or slots  3328  to hold the insulation member  3316  in place may be used. In the exemplary embodiment, the insulation member  3316  is illustrated as multilayered, generally planar, and U-shaped. The insulation member  3316  has a length L and a width W. In other embodiments, however, the shape, configuration, and size of the insulation member, for example may vary. 
     The insulation member  3316  may include a first leg  3346  and a second leg  3348  spaced apart from and extending parallel to, or generally parallel to, the first leg. The first leg  3346  is separated from the second leg  3348  by a recess  3350 . As with the recess  1050  of insulation member  1040 , for example, the recess  3350  may be configured to receive the pump  3304  and drive motor  3306  when the insulation member  3316  is installed under the dishwasher  3300 . In the exemplary embodiment, the first leg  3346  and the second leg  3348  have an equal thickness T 1  and equal length L. In other embodiments, however, the thickness and/or length of the first leg  3346  may vary from the thickness of the second leg  3348 . The insulation member  3316  includes a first side edge  3360  extending along the first leg  3346  and a second side edge  3362  extending along the second leg  3348 . 
     The insulation member  3316  includes an intermediate portion  3352  connecting the first leg  3346  to the second leg  3348 . The intermediate portion  3352  may be contoured to avoid interfering with, for example, the portion of the sump  3315  that extends into the cavity  3324 . In the illustrated embodiment, the intermediate portion  3352  has a thickness T 2  (see  FIG.  34   ) that is less than the thickness T 1  of one or both of the first leg  3346  and second leg  3348 . In other embodiments, however, the thickness T 2  of the intermediate portion  3352  may be equal or greater than the thickness T 1  one or both of the first leg  3346  and second leg  3348 . In the illustrated embodiment, the intermediate portion  3352  has a concave upper surface  3354  to generally conform with a convex lower surface  3356  ( FIG.  34   ) of the sump  3315 . 
     In the exemplary embodiment, the insulation member  3316  may be multilayered including a first porous sound absorbing layer  3220  facing the bottom surface  3312  of the housing  3302  and a first dense or facing layer  3222  attached to the first dense or facing layer. In other embodiments, however, the insulation member  3316  may be single layered or include a plurality of multiple dense or facing layers and/or porous sound absorbing layers. 
     As shown in  FIG.  34   , when installed, the insulation member  3316  is positioned within the cavity  3324  such that the first dense or facing layer  3222  faces the surface  3305  and the first porous sound absorbing layer  3220  is adjacent or abutting the bottom surface  3312  of the housing  3302 , including the concave upper surface  3354  generally conforming to the convex lower surface  3356  of the sump  3315 . In this position, the insulation member  3316  acts as both a thermal insulation and an acoustic insulation. 
     The insulation member  3316  is held in place by engagement of the first side edge  3360  and the second side edge  3362  with one or more of the notches  3326  and/or slots  3328 . In the illustrated embodiment, the first side edge  3360  and the second side edge  3362  are received in the one or more of the notches  3326  and slots  3328  such that the structure defining the notches and slots holds the side edges  3360 ,  3362  in place. In one exemplary embodiment, the side edges  3360 ,  3362  are compressed to fit within the one or more of the notches  3326  and slots  3328 . 
     Referring to  FIGS.  35 - 37   , an exemplary embodiment of an acoustically insulated machine is an acoustically insulated dishwasher  3500 . The acoustically insulated dishwasher  3500  is similar to the dishwasher  400  of  FIG.  5    in that the dishwasher includes a housing  3502  having a front side  3510 , a pump  3504  and a drive motor  3506  a plate  3508  ( FIG.  35   ), closing a front side  3510  of the housing, and a washing chamber  3318 . 
     The dishwasher  3500  includes a base portion  3534  that is provided with a plurality of legs  3521  and/or wheels  3523  that support the housing  3502 . The pump  3504  and drive motor  3506  are provided in a cavity  3524  between the legs  3521  and below a bottom surface  3512  of the housing  3502 . The cavity  3524  has a height HC. 
     The dishwasher  3500  includes a wash arm  3514  that is arranged within the washing chamber  3518  above a sump  3515 . The wash arm  3514  selectively delivers jets of washing fluid onto kitchenware placed within dishwasher  3500  in a manner known in the art. The pump  3504  is connected to the sump  3515 . In operation, the pump  3504  creates a circulating flow of washing fluid within the washing chamber  3518  during a washing operation. 
     As shown in  FIGS.  36 - 37   , and similar to the dishwasher  1000  of  FIGS.  13 - 17   , the dishwasher  3500  includes a water inlet  3520 , a water outlet  3522 , and an electrical power connection  3524 . The water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be accessible from the cavity  3524  located between the legs  3522  and below the housing  3504  ( FIG.  35   ). 
     One or more of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be movably mounted to the dishwasher  3500  relative to the housing  3502  to provide improved access to connect utility lines to the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524 . The water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be movably mounted in a variety of ways. Any mounting configuration that allows at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  to be moved to improve access to the at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be used. For example, the mounting configuration may allow at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  to pivot, rotate, move forward, backward, upward, downward, or sideways, or any combination thereof. 
     In the exemplary embodiment, the water inlet  3520  is connected to the housing  3502  by a first pivotable connection  3550  and the electrical power connection  3524  is connected to the housing  3502  by a second pivotable connection  3552 . In  FIG.  36   , the water inlet  3520  and the electrical power connection  3524  are in a first position below the bottom surface  3512  of the housing  3502  and within the cavity  3524 . As shown in the  FIG.  37   , the water inlet  3520  and the electrical power connection  3524  may each pivot outward (as shown by arrows A) to a second position in which at least a portion of the water inlet  3520  and the electrical power connection  3524  extend outward from the cavity  3524  past the front side  3510  of the housing  3502 . The second position provides improved access to the water inlet  3520  and the electrical power connection  3524  as compared to the first position where the water inlet  3520  and the electrical power connection  3524  are in the cavity  3524  under the housing  3502 . 
     While in the exemplary embodiment, the water inlet  3520  and the electrical power connection  3524  are positioned toward or adjacent the front side  3510  of the housing  3502 , in other embodiments, at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be positioned adjacent another side of the housing  3502 . For example, the housing  3502  may include a right side  3564  and a left side  3566 . At least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  may be movable mounted adjacent to the right side  3564  or the left side  3566  and movable between a first position and a second position where in the second position the at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524  extends outward from the cavity  3524  along a side of the dishwasher  3500 —to provide improved access. 
     In another exemplary embodiment, the dishwasher  3500  may include one or more one or more insulation members (not shown) in front of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524 , similar to insulation member  1016  of the dishwasher  1000  of  FIG.  10   . The one or more insulation members (not shown) may be movably mounted to provide improved access to connect utility lines to the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524 . In some embodiments, one or more insulation members (not shown) may be mounted to one or more of the movably mounted water inlet  3520 , water outlet  3522 , and electrical power connection  3524  and will move with the one or more water inlet  3520 , water outlet  3522 , and electrical power connection  3524 . 
     In another exemplary embodiment, the one or more insulation members (not shown) may be movably mounted to the dishwasher  3500  relative to the housing  3502  to be moved to improve access to the at least one of the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524 . For example, the mounting configuration of the one or more insulation members may allow the one or more insulation members pivot, rotate, move forward, backward, upward, downward, or sideways, or any combination thereof to provide improved access to the to connect utility lines to the water inlet  3520 , the water outlet  3522 , and the electrical power connection  3524 . For example, one or more insulation members (not shown) may be connected to the housing  3502  by a pivotable connection such that the one or more insulation members may pivot outward and away from the cavity  3524 . 
     While various inventive aspects, concepts and features of the inventions may be described and illustrated herein as embodied in combination in the exemplary embodiments, these various aspects, concepts and features may be used in many alternative embodiments, either individually or in various combinations and sub-combinations thereof. Unless expressly excluded herein all such combinations and sub-combinations are intended to be within the scope of the present inventions. Still further, while various alternative embodiments as to the various aspects, concepts and features of the inventions—such as alternative materials, structures, configurations, methods, devices and components, alternatives as to form, fit and function, and so on—may be described herein, such descriptions are not intended to be a complete or exhaustive list of available alternative embodiments, whether presently known or later developed. Those skilled in the art may readily adopt one or more of the inventive aspects, concepts or features into additional embodiments and uses within the scope of the present inventions even if such embodiments are not expressly disclosed herein. Additionally, even though some features, concepts or aspects of the inventions may be described herein as being a preferred arrangement or method, such description is not intended to suggest that such feature is required or necessary unless expressly so stated. Still further, exemplary or representative values and ranges may be included to assist in understanding the present disclosure, however, such values and ranges are not to be construed in a limiting sense and are intended to be critical values or ranges only if so expressly stated. Moreover, while various aspects, features and concepts may be expressly identified herein as being inventive or aiming part of an invention, such identification is not intended to be exclusive, but rather there may be inventive aspects, concepts and features that are fully described herein without being expressly identified as such or as part of a specific invention, the inventions instead being set forth in the appended claims. Descriptions of exemplary methods or processes are not limited to inclusion of all steps as being required in all cases, nor is the order that the steps are presented to be construed as required or necessary unless expressly so stated.