EP2697793A2 - Enclosure for devices of the type of electric power generating sets, internal combustion engines, air compressors and the like with high acoustic insulation - Google Patents

Enclosure for devices of the type of electric power generating sets, internal combustion engines, air compressors and the like with high acoustic insulation

Info

Publication number
EP2697793A2
EP2697793A2 EP12720611.8A EP12720611A EP2697793A2 EP 2697793 A2 EP2697793 A2 EP 2697793A2 EP 12720611 A EP12720611 A EP 12720611A EP 2697793 A2 EP2697793 A2 EP 2697793A2
Authority
EP
European Patent Office
Prior art keywords
enclosure
devices according
type
elastic means
devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12720611.8A
Other languages
German (de)
French (fr)
Inventor
Angelo D'anzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avanthia Srl
Original Assignee
Avanthia Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avanthia Srl filed Critical Avanthia Srl
Publication of EP2697793A2 publication Critical patent/EP2697793A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0033—Pulsation and noise damping means with encapsulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F04B53/002—Noise damping by encapsulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F04B53/003—Noise damping by damping supports

Definitions

  • the present invention relates to an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation.
  • the acoustic insulation of devices such as electric power generating sets, current generators, internal combustion engines, air compressors and the like is provided by placing them in an enclosure which is lined internally with panels, plates (flat, studded, pyramid-like), layers of various kinds or the like, made of substantially sound-absorbing material.
  • the sound-absorbing material that is generally used is polymeric material, composite material and the like.
  • This solution sometimes entails the disadvantage of ensuring an acoustic insulation that is insufficient to meet some specific requirements and therefore is not suitable to be used in applications requiring limited outward sound dispersion.
  • expanded polymers following exposure to atmospheric agents, tend to break down, becoming fragile and pulverizing, especially in the presence of mechanical vibrations.
  • the aim of the present invention is to solve the problems described above, by providing an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like which ensure high acoustic insulation.
  • an object of the invention is to provide an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation that has a limited tendency to degrade over time.
  • Another object of the present invention is to provide an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation that is at low cost, relatively simple to provide in practice and safe in application.
  • the present enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, comprising walls which delimit an internal compartment, said compartment being intended to contain at least one mechanical device and the like, characterized in that at least one of said walls is composed of at least two laminas, said first and second laminas defining a closed interspace, a predefined quantity of individual small elements having a preferably granular, chip-like, fibrous, powder-like shape, adapted to attenuate the transmission of sound waves through said enclosure, being arranged inside said interspace.
  • Figure 1 is a sectional view of the enclosure according to the invention, taken along its vertical plane.
  • the reference numeral 1 generally designates an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, which comprises walls 2, which delimit an internal compartment 3 which is designed to contain at least one mechanical device 4 and the like.
  • At least one of these walls 2 is composed of at least two laminas, a first one 5 and a second one 6.
  • Said first lamina 5 and said second lamina 6 define a closed interspace 7.
  • a predefined quantity, suitable to fill it completely or partially, of individual small elements 8 is provided that allow to attenuate the transmission of sound waves through said enclosure 1.
  • These individual elements 8 can have a different shape depending on the different insulation that one wishes to obtain; in particular, they can have a granular, chip-like, fibrous or powder-like shape.
  • the laminas 5 and 6 that constitute the walls 2 of the enclosure 1 can be more than two, forming a plurality of interspaces 7, interposed between them, in which said individual elements 8 are to be arranged.
  • At least one elastic means 9 is interposed between at least one inner portion of the enclosure 1 and at least one corresponding part of the device 4 and is designed to stably support said device 4.
  • the elastic means 9 is meant to prevent the transmission to the enclosure 1 of the vibrations generated by the device 4 during its operation, said vibrations causing a further increase in the generated noise.
  • the elastic means 9 is installed directly on the walls 2 that constitute the enclosure 1 or, as an alternative, if the walls are supported by a frame, it is installed on the frame itself, preventing the vibrations from being transmitted also to the walls that cover it.
  • the device 4 is suspended elastically, inside the enclosure 1 , by way of the elastic means 9, which prevent the transmission of the vibrations thereto.
  • the individual elements 8, arranged inside the interspace 7, are made of a material selected preferably among sand of any type and particle size, gravel of any type and size, grit of any type and size, sawdust and wood chips and the like of any size, polymeric granules of any type and size and combinations thereof.
  • the interspace 7 can be filled conveniently with sand or, as an alternative, with sand combined with other substances, so that it absorbs partly or completely the sound waves produced by said device 4.
  • the elastic means 9 is constituted by at least one axially acting spring 10, selected preferably between gas-filled dampers and metal springs.
  • the elastic means 9 is constituted by a tensioned portion of a material of the type of an elastomer selected preferably among rubber, polymers and the like.
  • the elastic means 9 is constituted by at least one spring, in parallel to which a damper is provided of a type selected preferably among pneumatic, electrically actuated and hydraulic, the assembly of the spring and of the damper constituting a shock absorber for the oscillations produced by the device 4.
  • the enclosure 1 is made of a material selected preferably among metal, wood, polymers and the like.
  • the possibility is not excluded to cover internally at least one of the laminas 5 and 6 of the enclosure 1 with at least one layer of sound- absorbing material, the inner faces of which can be preferably corrugated or studded, in order to increase the absorption and attenuation of the sound waves produced by the device 4 during its operation and hinder their transfer to the outside of the enclosure 1.
  • the elastic means 9 are four, three being arranged, with respect to said device 4, for example at the three directions defined respectively by the three Cartesian axes, and one being arranged in a fourth different direction, which is substantially oblique with respect to the directions of the three Cartesian axes, in order to balance the vibrations generated by the device 4.
  • the device 4 when it starts operating, begins to emit sound waves and generates vibrations.
  • the generated sound waves once the first lamina 5 of the enclosure 1 has been passed, enter the interspace 7, where they are absorbed and attenuated thanks to the presence of the individual small elements 8 arranged internally with a random distribution.
  • the vibrations produced by the device 4 are damped thanks to the action of the elastic means 9 arranged inside the enclosure 1 , which, by balancing the stresses produced by the device 4, prevent them from affecting the enclosure 7, generating additional noise.
  • any presence of the sound-absorbing material on the laminas 5 and 6 can further increase the damping of the sound waves.
  • the enclosure 1 for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like fully achieves the intended aim, since it ensures high acoustic insulation.
  • the presence of the interspace 7 and of the material contained therein in fact ensure that the sound waves are not transmitted directly from the inside of the enclosure 1 toward the outside.
  • the presence of the at least one elastic means 9 prevents the transmission of the vibrations to the enclosure 1 , which by vibrating would increase the perceived noise caused by the operation of the device 4.
  • a further advantage of the enclosure 1 according to the invention is that it has a reduced sensitivity to environmental and climate variations.
  • the material contained in the interspace 7, such as for example sand, following exposure to atmospheric agents, does not alter its physical characteristics, breaking down or losing its capacity to absorb sound waves, even in the presence of vibrations and therefore of mechanical stresses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Compressor (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

An enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, which comprises walls (2) which delimit an internal compartment (3) intended to contain at least one mechanical device (4) and the like. At least one of the walls (2) is composed of at least two laminas (5, 6), a first lamina (5) and a second lamina (6). The first lamina (5) and the second lamina (6) define a closed interspace (7). Inside the interspace (7) a predefined quantity, suitable to fill it completely or partially, of individual small elements (8) is provided, which allow to attenuate the transmission of sound waves through the enclosure (1). The individual elements (8) can have a different shape according to the different insulation that one wishes to obtain; in particular, they can have a granular, chip-like, fibrous or powder-like shape.

Description

ENCLOSURE FOR DEVICES OF TFffi TYPE OF ELECTRIC POWER GENERATING SETS, INTERNAL COMBUSTION ENGINES, AIR COMPRESSORS AND THE LIKE WITH HIGH ACOUSTIC INSULATION
The present invention relates to an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation.
As is known, the acoustic insulation of devices such as electric power generating sets, current generators, internal combustion engines, air compressors and the like is provided by placing them in an enclosure which is lined internally with panels, plates (flat, studded, pyramid-like), layers of various kinds or the like, made of substantially sound-absorbing material.
The sound-absorbing material that is generally used is polymeric material, composite material and the like.
This solution sometimes entails the disadvantage of ensuring an acoustic insulation that is insufficient to meet some specific requirements and therefore is not suitable to be used in applications requiring limited outward sound dispersion.
Specifically, when electric power generating sets installed in campers, caravans and the like are used to power devices that need to operate at night as well, such as air conditioning devices, the operation thereof must generate the least possible noise.
Another limitation that is observed is that the sound-absorbing material that is used tends to degrade over time.
In particular, expanded polymers, following exposure to atmospheric agents, tend to break down, becoming fragile and pulverizing, especially in the presence of mechanical vibrations.
The aim of the present invention is to solve the problems described above, by providing an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like which ensure high acoustic insulation.
Within this aim, an object of the invention is to provide an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation that has a limited tendency to degrade over time.
Another object of the present invention is to provide an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation that is at low cost, relatively simple to provide in practice and safe in application.
This aim and these and other objects that will become better apparent hereinafter are achieved by the present enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, comprising walls which delimit an internal compartment, said compartment being intended to contain at least one mechanical device and the like, characterized in that at least one of said walls is composed of at least two laminas, said first and second laminas defining a closed interspace, a predefined quantity of individual small elements having a preferably granular, chip-like, fibrous, powder-like shape, adapted to attenuate the transmission of sound waves through said enclosure, being arranged inside said interspace.
Further characteristics and advantages of the invention will become better apparent from the description of a preferred but not exclusive embodiment of the components for the enclosure of devices of the type of air conditioning units, electric motors, air compressors and the like with high acoustic insulation, illustrated by way of nonlimiting example in the accompanying drawing, wherein:
Figure 1 is a sectional view of the enclosure according to the invention, taken along its vertical plane. With reference to the figure, the reference numeral 1 generally designates an enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, which comprises walls 2, which delimit an internal compartment 3 which is designed to contain at least one mechanical device 4 and the like.
According to the invention, at least one of these walls 2 is composed of at least two laminas, a first one 5 and a second one 6.
Said first lamina 5 and said second lamina 6 define a closed interspace 7.
Conveniently, inside said interspace 7 a predefined quantity, suitable to fill it completely or partially, of individual small elements 8 is provided that allow to attenuate the transmission of sound waves through said enclosure 1.
These individual elements 8 can have a different shape depending on the different insulation that one wishes to obtain; in particular, they can have a granular, chip-like, fibrous or powder-like shape.
Conveniently, the laminas 5 and 6 that constitute the walls 2 of the enclosure 1 can be more than two, forming a plurality of interspaces 7, interposed between them, in which said individual elements 8 are to be arranged.
According to a possible constructive variation, at least one elastic means 9 is interposed between at least one inner portion of the enclosure 1 and at least one corresponding part of the device 4 and is designed to stably support said device 4.
In particular, the elastic means 9 is meant to prevent the transmission to the enclosure 1 of the vibrations generated by the device 4 during its operation, said vibrations causing a further increase in the generated noise.
The elastic means 9 is installed directly on the walls 2 that constitute the enclosure 1 or, as an alternative, if the walls are supported by a frame, it is installed on the frame itself, preventing the vibrations from being transmitted also to the walls that cover it.
The device 4 is suspended elastically, inside the enclosure 1 , by way of the elastic means 9, which prevent the transmission of the vibrations thereto.
The individual elements 8, arranged inside the interspace 7, are made of a material selected preferably among sand of any type and particle size, gravel of any type and size, grit of any type and size, sawdust and wood chips and the like of any size, polymeric granules of any type and size and combinations thereof.
In particular, the interspace 7 can be filled conveniently with sand or, as an alternative, with sand combined with other substances, so that it absorbs partly or completely the sound waves produced by said device 4.
According to a constructive solution of unquestionable interest in practice and in application, the elastic means 9 is constituted by at least one axially acting spring 10, selected preferably between gas-filled dampers and metal springs.
According to a further constructive solution, which is particularly simple and effective, the elastic means 9 is constituted by a tensioned portion of a material of the type of an elastomer selected preferably among rubber, polymers and the like.
According to a different constructive solution, also of particular interest, the elastic means 9 is constituted by at least one spring, in parallel to which a damper is provided of a type selected preferably among pneumatic, electrically actuated and hydraulic, the assembly of the spring and of the damper constituting a shock absorber for the oscillations produced by the device 4.
The several embodiments listed above have different elastic means 9 depending on the requirements of application of each individual case.
It is specified that elastomers, being subject to rapid mechanical aging, must be replaced more frequently; accordingly, springs or dampers are preferable as elastic means for some applications.
The enclosure 1 is made of a material selected preferably among metal, wood, polymers and the like.
The possibility is not excluded to cover internally at least one of the laminas 5 and 6 of the enclosure 1 with at least one layer of sound- absorbing material, the inner faces of which can be preferably corrugated or studded, in order to increase the absorption and attenuation of the sound waves produced by the device 4 during its operation and hinder their transfer to the outside of the enclosure 1.
Advantageously, the elastic means 9 are four, three being arranged, with respect to said device 4, for example at the three directions defined respectively by the three Cartesian axes, and one being arranged in a fourth different direction, which is substantially oblique with respect to the directions of the three Cartesian axes, in order to balance the vibrations generated by the device 4.
Use of the enclosure 1 according to the invention is as follows.
The device 4, when it starts operating, begins to emit sound waves and generates vibrations.
The generated sound waves, once the first lamina 5 of the enclosure 1 has been passed, enter the interspace 7, where they are absorbed and attenuated thanks to the presence of the individual small elements 8 arranged internally with a random distribution.
In this manner, the sound waves that can be perceived outside the enclosure 7 have a reduced intensity and are therefore not unpleasant.
At the same time, the vibrations produced by the device 4 are damped thanks to the action of the elastic means 9 arranged inside the enclosure 1 , which, by balancing the stresses produced by the device 4, prevent them from affecting the enclosure 7, generating additional noise.
The simultaneous presence of the spring and of the damper ensures that transmitted vibrations are minimized.
Any presence of the sound-absorbing material on the laminas 5 and 6 can further increase the damping of the sound waves.
In practice it has been found that the enclosure 1 for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like fully achieves the intended aim, since it ensures high acoustic insulation.
The presence of the interspace 7 and of the material contained therein in fact ensure that the sound waves are not transmitted directly from the inside of the enclosure 1 toward the outside.
Moreover, the presence of the at least one elastic means 9 prevents the transmission of the vibrations to the enclosure 1 , which by vibrating would increase the perceived noise caused by the operation of the device 4.
A further advantage of the enclosure 1 according to the invention is that it has a reduced sensitivity to environmental and climate variations.
In particular, the material contained in the interspace 7, such as for example sand, following exposure to atmospheric agents, does not alter its physical characteristics, breaking down or losing its capacity to absorb sound waves, even in the presence of vibrations and therefore of mechanical stresses.
The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
The possibility is not excluded to provide an enclosure 1 in which the interspace 7 is filled appropriately with the individual small elements 8, for example sand, but does not have elastic means 9.
In the examples of embodiment shown, individual characteristics, given in relation to specific examples, may actually be interchanged with other different characteristics that exist in other examples of embodiment. In practice, the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.
The disclosures in Italian Patent Application no. BO201 1 A000196, from which this application claims priority, are incorporated herein by reference.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. An enclosure for devices of the type of electric power generating sets, current generators, internal combustion engines, air compressors and the like with high acoustic insulation, comprising walls (2) which delimit an internal compartment (3), said compartment (3) being intended to contain at least one mechanical device (4) and the like, characterized in that at least one of said walls (2) is composed of at least two laminas (5, 6), said first lamina (5) and said second lamina (6) defining a closed interspace (7), a predefined quantity of individual small elements (8) having a preferably granular, chip-like, fibrous, powder-like shape, adapted to attenuate the transmission of sound waves through said enclosure (1), being arranged inside said interspace (7).
2. The enclosure for devices according to claim 1, characterized in that at least one elastic means (9) intended to support stably said device (4) is interposed between at least one inner portion of said enclosure (1) and at least one corresponding part of said device (4), said elastic means (9) avoiding the transmission to the enclosure (1) of the vibrations generated thereby.
3. The enclosure for devices according to claim 1, characterized in that said individual elements (8) are made of a material selected among sand of any kind and particle size, gravel of any kind and size, grit of any kind and size, sawdust and wood chips and the like of any size, polymeric granules of any kind and size, and combinations thereof.
4. The enclosure for devices according to claims 1 and 2, characterized in that said at least one elastic means (9) is constituted by at least one axially acting spring (10), which is selected preferably between gas-filled dampers and metallic springs.
5. The enclosure for devices according to claims 1 and 2, characterized in that said at least one elastic means (9) is constituted by a tensioned portion of material of the type of an elastomer selected preferably among rubber, polymers and the like.
6. The enclosure for devices according to claims 1 , 2 and 4, characterized in that a damper of a type selected preferably among pneumatic, electrically actuated and hydraulic is arranged in parallel to said springs, the assembly of the spring and damper constituting a shock absorber for the oscillations produced by said device (4).
7. The enclosure for devices according to one or more of the preceding claims, characterized in that said enclosure (1) is made of a material selected preferably among metal, wood, polymers and the like.
8. The enclosure for devices according to one or more of the preceding claims, characterized in that at least one of said laminas (5, 6) comprises a layer of sound-absorbing material to absorb and attenuate the sound waves produced by said device (4) during its operation.
9. The enclosure for devices according to one or more of the preceding claims, characterized in that said at least one elastic means (9) are at least four, three being arranged, with respect to said device (4), at the three directions identified respectively by the three Cartesian axes and one being arranged in a fourth different direction, which is substantially oblique with respect to those of the three Cartesian axes, to balance the vibrations generated by said device (4).
EP12720611.8A 2011-04-14 2012-04-12 Enclosure for devices of the type of electric power generating sets, internal combustion engines, air compressors and the like with high acoustic insulation Withdrawn EP2697793A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000196A ITBO20110196A1 (en) 2011-04-14 2011-04-14 THE ENVELOPE OF DEVICES IN THE TYPE OF ELECTRIC GROUPS, ENDOTHERMAL ENGINES AIR COMPRESSORS AND SIMILAR FOR HIGH ACOUSTIC INSULATION
PCT/IB2012/051790 WO2012140590A2 (en) 2011-04-14 2012-04-12 Enclosure for devices of the type of electric power generating sets, internal combustion engines, air compressors and the like with high acoustic insulation

Publications (1)

Publication Number Publication Date
EP2697793A2 true EP2697793A2 (en) 2014-02-19

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EP12720611.8A Withdrawn EP2697793A2 (en) 2011-04-14 2012-04-12 Enclosure for devices of the type of electric power generating sets, internal combustion engines, air compressors and the like with high acoustic insulation

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Country Link
EP (1) EP2697793A2 (en)
IT (1) ITBO20110196A1 (en)
WO (1) WO2012140590A2 (en)

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ITBO20110196A1 (en) 2012-10-15
WO2012140590A3 (en) 2013-06-20

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