EP2484981A1 - Appareil d'aspiration - Google Patents
Appareil d'aspiration Download PDFInfo
- Publication number
- EP2484981A1 EP2484981A1 EP12154391A EP12154391A EP2484981A1 EP 2484981 A1 EP2484981 A1 EP 2484981A1 EP 12154391 A EP12154391 A EP 12154391A EP 12154391 A EP12154391 A EP 12154391A EP 2484981 A1 EP2484981 A1 EP 2484981A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- stream
- inlet aperture
- soundproofing
- noise
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000003517 fume Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 5
- 230000003584 silencer Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000011490 mineral wool Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Definitions
- the present invention concerns a suction apparatus, for use in a domestic environment, for example a kitchen, or in a restaurant business or suchlike, which is not only configured for an efficacious suction of the fumes but also has great capacity for noise abatement.
- Suction apparatuses for domestic or professional use comprise means to take in air or fumes from a first environment toward a second environment.
- the suction means are driven by an electric motor connected to a fan to take in the fumes, which can be made to rotate at different speeds and typically produces a noise emission which, for reasons of environmental comfort, it is preferable to abate, completely or at least partly, by using suitable insulating and/or soundproofing materials. Moreover, in this perspective, it is also preferable to reduce, if not abate, the noise produced by vortexes and turbulence generated by the stream of air taken inside the suction body. Although a reduction in the noise is achieved, it is never completely eliminated. Therefore, when the suction body is working, the user can be exposed to a noise which, even if it is of low intensity, is continuous and can be, over a period, annoying.
- the silencer in US'776 is configured as a reduction unit both to carry out a passive reduction of the noise, for example being made of or lined with soundproofing material such as polyester or melamine, which reduces frequencies above 1,000 Hz, and also to carry out an active reduction of the noise which reduces frequencies below 1,000 Hz, using microphones and loudspeakers which generate an opposite phase noise with an equal amplitude to the noise emanating through the silencer thereof, in order to dampen it.
- a passive reduction of the noise for example being made of or lined with soundproofing material such as polyester or melamine, which reduces frequencies above 1,000 Hz, and also to carry out an active reduction of the noise which reduces frequencies below 1,000 Hz, using microphones and loudspeakers which generate an opposite phase noise with an equal amplitude to the noise emanating through the silencer thereof, in order to dampen it.
- the containing body of the motor which can be made of a material which has an acoustic insulation capacity, such as polyester or melamine, can comprise a lining in a similar soundproofing material which is applied and disposed on the internal walls in proximity to the lower inlet aperture provided in the containing body and through which the air is taken in.
- the lower inlet aperture is shaped with straight and squared walls and edges, with very little or no aerodynamic capacity.
- an active second noise reduction unit similar to the one provided on the silencer, is mounted under the motor, facing toward the lower inlet aperture and used to reduce the low frequency noise generated by the air turbulence and in its turn lined by applied soundproofing lining.
- a suction pipe of a box-like shape comprises internally shaped and perforated walls, associated with linings of soundproofing material with a rockwool base.
- a suction motor is mounted in the box-like suction pipe, inside another central body which has lateral apertures and a lower chamber through which the air coming from the lower inlet aperture is taken in.
- a soundproofing device of a prism shape, with a triangular base and made from other shaped and perforated walls, is installed transversely, associated with linings of soundproofing material with a rockwool base.
- WO'080 also has high production costs, due also to the need to assemble the various components which carry out the soundproofing function.
- the presence of the suction chamber in the central body in WO'080 not only defines a complex and tortuous path of the air taken in but also distances the motor too much from the soundproofing device mounted on the lower external wall of the central body and defines a resonance box which amplifies the noise of the motor and of the stream of turbulent air.
- Purpose of the present invention is to achieve a suction apparatus, typically for domestic use but not excluding professional use, which allows to reduce the noise emissions considerably, produced both by the suction motor and by the air stream taken in, at the same time maintaining a high suction efficiency.
- the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- a suction apparatus can be used in domestic environments, in a kitchen for example, or in restaurant activities or suchlike, and comprises a suction body, provided with an inlet aperture to take in a stream of air and/or fumes from a first environment and a discharge outlet to discharge the stream taken in to a second environment.
- the apparatus of the present invention also comprises air and/or fumes suction means and soundproofing means, suitable to reduce or eliminate the noise produced by the suction means and/or by the stream taken in.
- the soundproofing means comprise a soundproofing body made completely as a monoblock of soundproofing material, which houses inside itself the suction means and, in substantial correspondence with the inlet aperture, has one or more means to separate and divert the stream into a plurality of sub-streams directed toward at least the peripheral walls of the soundproofing body.
- the transverse extension of the one or more separation and diversion means is slightly bigger than the transverse extension of the inlet aperture, the peripheral edges of the one or more separation and diversion means, in cooperation with the peripheral edges of the inlet aperture, functioning as a whole as a screen against the noise emission with respect to the inlet aperture, so that there is no direct communication at least between the source of noise of the suction means and the environment outside the inlet aperture.
- the present invention allows a considerable abatement of the noise, without, however, having to resort to costly and complex active noise abatement devices.
- the present invention allows reduced assembly costs, together with a high quality and repeatability of soundproofing in production because, by making the soundproofing body as a monoblock, or as a single body without substantial interruption of material between the parts which constitute it, including also the one or more means to separate and divert the stream, one avoids the manual assembly steps of the various components which perform the soundproofing function, which in themselves are not without uncertainties and possible errors or inaccuracies.
- the present invention preliminarily developing the shape, possibly by means of simulation and modeling using an electronic processor, and suitably sizing the soundproofing body consisting of a monoblock, the repeatability and correct positioning of the means which perform the soundproofing function are guaranteed.
- the soundproofing body is shaped to define a first external part that extends between the inlet aperture and the discharge outlet, and a second part inside the first part, disposed in substantial correspondence with the inlet aperture.
- the first external part comprises peripheral walls that delimit inside them a suction chamber.
- the suction chamber in turn is formed by a first section, in proximity to the inlet aperture, and a second section, downstream of the first section in a main direction of travel of the stream of air and fumes, and upstream of the discharge outlet, in which the suction means are housed.
- the second internal part is provided inside the first section, immediately downstream of the inlet aperture and is shaped to act as means to separate and divert the main stream entering through the inlet aperture in internal suction sub-streams.
- the second internal part which acts as a separation and diversion mean cooperates with the peripheral walls of the first part so as to define passage channels, diverging toward the outside with respect to the main direction of travel of the stream.
- the passage channels are configured to selectively receive the suction sub-streams and to convey them at least toward the soundproofing material that forms the peripheral walls, so as to reduce and/or eliminate the noise emissions of the suction body.
- the peripheral walls in proximity to the inlet aperture the peripheral walls comprise convex regions which define a gradual and desired narrowing in section thereof, suitable to channel the stream of air and/or fumes toward the second internal part which functions as a separation and diversion mean, immediately downstream of the inlet aperture.
- the curve defined by the convexity of the inlet walls is advantageously suitable to prevent the generation of turbulence and vortexes in the stream, reducing the noise emissions.
- the second internal part which functions as a separation and diversion mean is substantially shaped like a prism with its axis transverse to the direction of flow of the stream taken in, having an edge facing toward the inlet aperture defined by associated converging walls that determine the separation and diversion of the stream taken in into sub-streams.
- the separation and diversion mean extends longitudinally between two opposite peripheral walls of the first external part of the soundproofing body defining, in the suction chamber, at least a first passage channel, configured to selectively receive a first sub-stream, and a second passage channel, configured to selectively receive a second sub-stream.
- the two channels thus defined have all the walls made of soundproofing material, and are therefore suitable to absorb the noise of the channeled streams.
- the first passage channel and the second passage channel are inclined with respect to the main direction of the stream by an angle comprised between about 20° and about 40°, preferably between about 25° and about 35°.
- each of the passage channels has a cross section that progressively reduces in the direction of travel of the stream taken in, from the inlet aperture toward the discharge outlet, that is, larger in size near the inlet aperture and smaller toward the second section of the suction chamber.
- the convex regions of the peripheral walls delimit a maximum narrowing in section of the suction chamber in proximity with the inlet aperture and substantially flush with the edge of the separation and diversion mean of the stream taken in.
- the reciprocal disposition of the second internal part, that functions as a separation and diversion mean of the stream, and of the peripheral walls that delimit the inlet aperture determines a complete screening effect of the noise emissions, particularly the noise generated from inside the suction body, so that there is no direct sound communication between the suction means and the inlet aperture. Therefore, any noise emission emitted by the suction means cannot exit from the inlet aperture without being intercepted by the soundproofing material, hence without being at least partly attenuated by it.
- the transverse extension of the separation and diversion mean of the stream is slightly greater than the transverse extension of the inlet aperture, so that there is no direct communication at least between the source of the noise of the suction means and the inlet aperture, so that the noise emission is intercepted by the soundproofing material.
- the lateral wall facing toward the suction means is slightly longer than the inlet aperture, and is aligned with the latter with respect to the main direction of the stream, so as to obtain the desired masking effect of the noise.
- the suction means cooperating with the peripheral walls, define a second segment of each of the passage channels that develops inside the second section of the suction chamber.
- the second segment of each of the passage channels extends in a direction substantially parallel to the main direction of travel of the stream in the suction body.
- the soundproofing material which makes up the shaped monoblock is based on flexible expanded polyurethane agglomerate, in some variants with a density comprised between about 100 g/dm 3 and 200 g/dm 3 , preferably between about 160 g/dm 3 and 180 g/dm 3 .
- the latter is a material with good soundproofing qualities and suitable to achieve a self-bearing structure which can support its own weight without deforming or breaking.
- the suction apparatus also comprises a discharge pipe for the stream taken in and an elbow connection, made of the same material that forms the soundproofing body and also advantageously made as a monoblock of soundproofing material.
- the present invention also concerns a method to take in a stream of air and/or fumes using a suction apparatus having a suction body, provided with an inlet aperture to take in the stream of air and/or fumes from a first environment, a discharge outlet to discharge the stream taken in toward a second environment, means to take in the air and/or fumes and soundproofing means suitable to reduce or eliminate the noise produced at least by the suction means and/or the stream taken in.
- the method comprises at least a first step in which a stream of air is taken in by the suction body through the inlet aperture, a second step in which the stream is divided into a plurality of sub-streams, which are selectively directed, advantageously in passage channels of the suction body, toward desired soundproofing means, suitable to absorb the noise, and a third step in which the sub-streams, passing through the suction means, are emitted through the discharge outlet.
- the method according to the present invention provides to prevent the direct communication at least between the source of the noise of the suction means and the inlet aperture using as a screen the transverse extension of the one or more separation and diversion means slightly bigger than the transverse extension of the inlet aperture.
- a suction apparatus 10 comprises a suction body 11 connected to a discharge pipe 13 to discharge the fumes, which in turn is connected to an elbow connection 15, to take in the air and/or fumes from a first environment, for example a kitchen, to a second environment, for example outside the house.
- the suction body 11 may be coupled, as needed, to various known types of extractor hoods, not shown here.
- the suction apparatus 10 is for example suitable to be installed above a cooker or suchlike, to suck in and then remove the fumes and vapors produced, for example during cooking.
- the suction body 11 comprises an external casing 20, for example made of metal such as zinc-plated sheet, and has an inlet aperture 19 to suck in a stream of air and/or fumes, and a discharge outlet 18, associated in this case with the discharge pipe 13.
- the suction body 11 comprises inside itself an aspirator, also called conveyor 17 ( figs. 3 and 4 ), of a known type, housed in a corresponding suction chamber 30, fed by a suitable electric motor, not shown, and suitable to suck in the fumes from the inlet aperture 19, and to expel them to the discharge pipe 13.
- an aspirator also called conveyor 17 ( figs. 3 and 4 )
- conveyor 17 figs. 3 and 4
- suitable electric motor not shown
- the suction body 11 comprises a soundproofing body 12 formed by a monoblock of soundproofing material, advantageously made by molding.
- the soundproofing material which makes up the shaped monoblock is based on flexible expanded polyurethane agglomerate, with a density comprised between about 100 g/dm 3 and 200 g/dm 3 , preferably between about 160 g/dm 3 and 180 g/dm 3 , which guarantees an optimum compromise between soundproofing capacity and self-bearing structural properties.
- the structure of the open-cell material allows to disperse and absorb the sound waves in a wide range of frequencies. Furthermore, it is a material suitable for shaping by means of molding processes.
- the discharge pipe 13 and the elbow connection 15 are also made with the same soundproofing material as above, and actively contribute to reducing the noise exiting from the suction body 11.
- the elbow connection 15 has a section equal to that of the discharge pipe 13, and a curvature suitable to limit to the utmost the noisiness of the stream of air, at the same time reducing load losses to a minimum.
- the discharge pipe 13 and the elbow connection 15 may advantageously be rendered substantially impermeable, for example by applying a lining or covering that is not permeable to air, since the porosity of the soundproofing material of which they are made would make them permeable to the air expelled from the aspirator 17.
- the soundproofing body 12 is shaped so as to define a first external part 12a ( fig. 5 ), which extends between the inlet aperture 19 and the discharge outlet 18, and a second part 12b, inside the first part 12a, disposed in substantial correspondence with the inlet aperture 19.
- the first part 12a comprises peripheral walls 12c, 12d, in particular a pair of front peripheral walls 12c and a pair of lateral peripheral walls 12d, disposed mutually opposite, which delimit inside them the suction chamber 30 ( figs. 3, 4 and 5 ).
- the suction chamber 30 is delimited at the upper part by an upper closing element or lid 14, advantageously made of the same soundproofing material as the soundproofing body 12, on which upper closing element 14 the discharge outlet 18 is made.
- the upper closing element 14 has a through aperture 23 associated with the discharge outlet 18, which is shaped so as to house a terminal portion 25 of the discharge pipe 13.
- the terminal portion 25 and the through aperture 23 are reciprocally mating to achieve a same-shape coupling.
- the same-shape coupling substantially determines a reliable fluidic seal, as well as a resistant mechanical constraint, so that there is no passage or leakage of air and therefore no propagation of the noise. Consequently, the solution of attaching the discharge pipe 13 and the upper closing element 14 through same-shape coupling further contributes to limiting the noisiness of the suction apparatus 10 according to the present invention.
- the main function of the upper closing element 14 is to separate the aspirator 17 mechanically from the external casing 20 in order to eliminate possible transmissions of vibrations between the latter, and also to function as an absorption for and a barrier against the propagation of the noise.
- the aspirator 17 determines a stream of air F and/or fumes taken in from the inlet aperture 19 (at the bottom in fig. 5 ) to the discharge outlet 18 (at the top in fig. 5 ).
- the suction chamber 30 has a first section 39 in substantial correspondence with the inlet aperture 19, and a second section 41 downstream of the first section 39 in a main direction X in which the stream F travels, which in this specific solution is also the axis of symmetry of the suction chamber 30, and upstream of the discharge outlet 18, in which a seating 37 is provided in which the aspirator 17 is housed.
- the second part 12b is provided in the first section 39 and comprises a stream deflector 29, in a single piece with the remaining soundproofing body 12, which separates the main stream F entering through the inlet aperture 19 into sub-streams F1, F2 ( fig. 4 ).
- the deflector 29, cooperating with the peripheral walls 12c, 12d of the first part 12a, defines passage channels 33, 35 diverging toward the outside, that is, toward the inlet aperture 19, and configured to selectively receive the sub-streams F1, F2 and to convey them at least toward the soundproofing material which forms the peripheral walls 12c, 12d, so as to reduce and/or eliminate the noise emissions of the suction body 11.
- the stream deflector 29 made of soundproofing material is substantially shaped like a prism, in this case with a triangular base and disposed with its axis perpendicular to the direction X, extending between the walls of a desired pair of peripheral walls 12c or 12d, in this case between the walls of the pair of front peripheral walls 12c ( figs. 3, 4 and 5 ).
- the deflector 29 has rounded or beveled edges to determine an optimum aerodynamic behavior and to promote the passage of the stream F taken in and to reduce the formation of vortexes and turbulence that would generate noise.
- a lateral wall 28a, upper during normal use, of the prism which in this case, given as a non-restrictive example of the invention, forms the deflector 29, is disposed facing toward the discharge outlet 18, closely adjacent to the aspirator 17, although the minimum space necessary for components or protruding parts of the aspirator 17 is guaranteed, so as to intercept directly the noise emission of the above ( fig. 5 ).
- One edge 26 of the prism in a position opposite the lateral wall 28a and defined by the remaining two lateral walls 28b, 28c, in normal use converging downward, faces toward the inlet aperture 19 of the suction body 11, and near the latter, to function as a separator of the stream F.
- the length of the lateral wall 28a is slightly greater than the length of the inlet aperture 19, so that there is no direct sound communication between the source of the noise, represented by the aspirator 17, and the inlet aperture 19, thus reducing the overall noise.
- the pair of lateral peripheral walls 12d, in proximity to the inlet aperture 19, has convex regions 31, advantageously rounded and beveled, to obtain an optimum aerodynamic behavior, with the purpose of reducing turbulence and vortexes; facing each other, they delimit the inlet aperture 19 and define a narrowing in the cross section of the suction chamber 30 in proximity with the inlet aperture 19 ( figs. 4 and 5 ), which promotes the channeling of the stream F toward the deflector 29.
- the transverse extension of the deflector 29, in this case given as a non-restrictive example of the invention, with reference to the length or distance between the peripheral edges of the lateral wall 28a, is slightly greater than the cross section of the inlet aperture 19, defined substantially by the convex regions 31, so as to define all in all a physical screen against the noise coming from the aspirator 17 with respect to the environment outside the inlet aperture 19.
- the peripheral edges of the lateral wall 28a of the deflector 29 cooperate, overlapping in height, with the convex regions 31 which delimit the peripheral edges of the inlet aperture 19, defining overall the desired screening effect.
- the remaining segment of the lateral peripheral walls 12d above the convex regions 31 has a thickness that gradually diminishes until it is stabilized at a predefined value in the second section 41 of the suction chamber 30.
- the lateral peripheral walls 12d identified above and the deflector 29 define a first passage channel 33 and a second passage channel 35 suitable to receive respectively the sub-streams F1 and F2 into which the main stream F has been divided at inlet ( fig. 4 ) by the deflector 29.
- the channels 33 and 35 in proximity to the inlet aperture 19, have a first segment 33a, 35a which has a section that narrows as it proceeds in the direction of the sub-streams F1 and F2, diverging and inclined by an angle of about 30° with respect to the direction X.
- the passage channels 33 and 35 have a second segment 33b, 35b, delimited externally by the peripheral walls 12c and 12d, and internally by the aspirator 17, which have a substantially vertical development and parallel to direction X ( figs. 4 and 5 ).
- the aspirator 17, of a known type is installed in the seating 37 ( figs. 3, 4 and 5 ) and comprises two suction apertures for the air to enter; they are positioned vertically and respectively face toward the first passage channel 33 and the second passage channel 35.
- the sub-streams F1 and F2 of the air and/or fumes in the passage channels 33 and 35 are sucked in by the aspirator 17 and are then thrust inside the discharge pipe 13 through the discharge outlet 18 located in the upper part of the aspirator 17 ( figs. 3 and 4 ).
- the aspirator 17 is mounted above the deflector 29 ( fig. 4 ) in great proximity to the lateral wall 28a, upper during use, of the deflector 29.
- the noise emitted from the lower part of the aspirator 17 is intercepted and reduced immediately by the lateral soundproofing wall 28a, and moreover, the reduced distance in the reciprocal positioning prevents phenomena of amplification and reverberation of the noise.
- the air is sucked in laterally by the aspirator 17, following the shortest and most direct route, after it has passed through the passage channels 33, 35, preventing the formation of tortuous paths of the air taken in, and hence the formation of unwanted turbulence and noisiness.
- the separation and diversion means can be formed by two or more separation and diversion elements, shaped with different geometric forms according to needs, for example as an upturned prism, beveled, rounded at the edges, upturned wedge, or other, so as to define the separation of the stream into more than two sub-streams, for example three, four or more sub-streams, which are directed toward respective channels defined by the separation and diversion elements themselves, suitably distanced and reciprocally positioned.
- the present invention therefore provides to direct the plurality of sub-streams in a desired manner toward the soundproofing walls, in order to reduce noise.
- Applicant has carried out experiments to compare the noise emissions, with the same functioning conditions, of the suction apparatus 10 according to the present invention and a known suction apparatus without means for reducing noise.
- the measurements were carried out according to the international standard CEI IEC 60704-2-13:2000.
- the suction motor of the suction apparatuses 10 used in the experiments had a nominal suction capacity of 800 m 3 /hr.
- the suction apparatus 10 according to the present invention showed, in percentage terms, an average advantage in reducing noise intensity comprised between 20% and 30% compared with the apparatus that did not have the noise reduction means.
- Applicant also carried out experiments to compare noise emissions, where possible with the same functioning conditions, of the suction apparatus 10 according to the present invention using sample B, with two known suction apparatuses (samples C and D) and available on the market, comprising noise reduction means according to the state of the art, where possible comparing homogeneous or comparable IEC flow rates of air taken in (m 3 /hr) and similar or comparable powers of the corresponding suction motors.
- Table 1 shows the experimental data relating to the tests carried out with sample A.
- the Table shows sound power values (noise), pressure and flow rate of the air taken in, with the corresponding measurement units.
- Table 1 Speed 4 Speed 3 Speed 2 Speed 1 Sound power (dbA) 53.3 45.2 40.1 34.2 Pressure (Pa) 520 410 310 190 IEC Flow rate (m 3 /hr) 690 490 345 220
- Table 2 shows the experimental data relating to the tests carried out with sample B, compared with the data obtained for samples C and D.
- the Table shows sound power values (noise), pressure and flow rate of the air taken in, with the corresponding measurement units. Where the flow rate data were not homogeneous for the purposes of the comparison, the Table indicates the difference in the corresponding value of sample B according to the present invention with respect to samples C and D.
- sample B of the present invention In the comparison with sample C, an obvious reduction in noise can be seen for sample B of the present invention by 9.5% at speed 3, and 3.2% at speed 4, also taking into account that sample B had a greater flow rate by respectively 20 m3/hr and 30 m 3 /hr compared with the flow rate value seen for sample C at speeds 3 and 4. It is therefore reasonable to expect that, given the same flow rate, the reduction obtainable with sample B will be even greater compared with sample C.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Telephone Function (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Duct Arrangements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD2011A000017A IT1404076B1 (it) | 2011-02-08 | 2011-02-08 | Apparecchiatura di aspirazione. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2484981A1 true EP2484981A1 (fr) | 2012-08-08 |
EP2484981B1 EP2484981B1 (fr) | 2016-06-22 |
Family
ID=43976524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12154391.2A Active EP2484981B1 (fr) | 2011-02-08 | 2012-02-08 | Appareil d'aspiration |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2484981B1 (fr) |
IT (1) | IT1404076B1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012143864A1 (fr) * | 2011-04-20 | 2012-10-26 | Indesit Company S.P.A. | Hotte d'aspiration et/ou de filtrage de fumées, en particulier pour une unité de cuisine domestique |
CN103697512A (zh) * | 2013-11-30 | 2014-04-02 | 宁波方太厨具有限公司 | 一种静音式吸油烟机 |
EP2827076A1 (fr) * | 2013-07-16 | 2015-01-21 | TROX GmbH | Composant d'aération |
CN108019803A (zh) * | 2017-11-27 | 2018-05-11 | 佛山市云米电器科技有限公司 | 一种具有卷吸效应的非平面式抽油烟机 |
IT201900000052A1 (it) * | 2019-01-03 | 2020-07-03 | Elica Spa | Cappa per l'aspirazione di fumi di cottura comprendente un elemento divisorio per il condotto di aspirazione |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3401210A1 (de) * | 1984-01-14 | 1985-07-25 | ASEA AB, Västerås | Schalldaempfer zum anschluss an einen stroemungskanal |
EP0840063A1 (fr) * | 1996-11-01 | 1998-05-06 | AKTIEBOLAGET ELECTROLUX (publ.) | Ventilateur de cuisine |
US20040194776A1 (en) | 2003-04-03 | 2004-10-07 | Silentium Ltd. | Method for reducing noise of a cooking hood and a cooking hood based on such method |
DE202007017089U1 (de) * | 2006-12-22 | 2008-05-15 | Wendt Sit Gmbh & Co.Kg | Dämpfungsvorrichtung |
WO2008090080A1 (fr) | 2007-01-19 | 2008-07-31 | Roblin Sas | Hotte aspirante pour cuisine |
EP2267373A1 (fr) * | 2009-06-24 | 2010-12-29 | BSH Bosch und Siemens Hausgeräte GmbH | Ventilateur externe pour un dispositif de cheminée de ventilation |
-
2011
- 2011-02-08 IT ITUD2011A000017A patent/IT1404076B1/it active
-
2012
- 2012-02-08 EP EP12154391.2A patent/EP2484981B1/fr active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3401210A1 (de) * | 1984-01-14 | 1985-07-25 | ASEA AB, Västerås | Schalldaempfer zum anschluss an einen stroemungskanal |
EP0840063A1 (fr) * | 1996-11-01 | 1998-05-06 | AKTIEBOLAGET ELECTROLUX (publ.) | Ventilateur de cuisine |
US20040194776A1 (en) | 2003-04-03 | 2004-10-07 | Silentium Ltd. | Method for reducing noise of a cooking hood and a cooking hood based on such method |
DE202007017089U1 (de) * | 2006-12-22 | 2008-05-15 | Wendt Sit Gmbh & Co.Kg | Dämpfungsvorrichtung |
WO2008090080A1 (fr) | 2007-01-19 | 2008-07-31 | Roblin Sas | Hotte aspirante pour cuisine |
EP2267373A1 (fr) * | 2009-06-24 | 2010-12-29 | BSH Bosch und Siemens Hausgeräte GmbH | Ventilateur externe pour un dispositif de cheminée de ventilation |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012143864A1 (fr) * | 2011-04-20 | 2012-10-26 | Indesit Company S.P.A. | Hotte d'aspiration et/ou de filtrage de fumées, en particulier pour une unité de cuisine domestique |
EP2827076A1 (fr) * | 2013-07-16 | 2015-01-21 | TROX GmbH | Composant d'aération |
CN103697512A (zh) * | 2013-11-30 | 2014-04-02 | 宁波方太厨具有限公司 | 一种静音式吸油烟机 |
CN108019803A (zh) * | 2017-11-27 | 2018-05-11 | 佛山市云米电器科技有限公司 | 一种具有卷吸效应的非平面式抽油烟机 |
IT201900000052A1 (it) * | 2019-01-03 | 2020-07-03 | Elica Spa | Cappa per l'aspirazione di fumi di cottura comprendente un elemento divisorio per il condotto di aspirazione |
WO2020141387A1 (fr) * | 2019-01-03 | 2020-07-09 | Elica S.P.A. | Hotte d'extraction de vapeurs de cuisson comprenant un élément de séparation pour le conduit d'aspiration |
Also Published As
Publication number | Publication date |
---|---|
ITUD20110017A1 (it) | 2012-08-09 |
EP2484981B1 (fr) | 2016-06-22 |
IT1404076B1 (it) | 2013-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2484981B1 (fr) | Appareil d'aspiration | |
US10458589B2 (en) | Sound suppression apparatus | |
EP2399076B1 (fr) | Hotte d'extraction de fumée avec une unité d'insonorisation | |
US8500525B2 (en) | Elevator ceiling ventilation cavity | |
JP2015535957A (ja) | 騒音を減少するモーダルアッテネータ | |
JPWO2015029403A1 (ja) | レンジフード | |
JP5923690B2 (ja) | レンジフード | |
JPH0894146A (ja) | 天井埋込形換気扇 | |
JP2008144996A (ja) | 消音装置 | |
JP2014041242A (ja) | 消音体及びこれを用いた消音器 | |
JP6248285B2 (ja) | レンジフード | |
JP6589131B2 (ja) | 送風装置 | |
CN106320547A (zh) | 带侧部隔音板的降噪机房罩壳 | |
CN212430980U (zh) | 油烟机 | |
JP2016118333A (ja) | レンジフード | |
CN108731071A (zh) | 一种带导流噪声过滤装置的油烟机 | |
JP2021110260A (ja) | 送風装置 | |
CN220151555U (zh) | 用于容积式压缩机的进气消声器和容积式压缩机 | |
CN110017304A (zh) | 一种消声过滤装置 | |
CN220871115U (zh) | 一种降噪结构、新风模块以及新风空调 | |
CN216557295U (zh) | 一种降噪型吸油烟机 | |
JP2017110861A (ja) | 換気装置 | |
JPH06300338A (ja) | レンジフード | |
CN113587158A (zh) | 油烟机 | |
JP2017058060A (ja) | 送風装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
17P | Request for examination filed |
Effective date: 20130208 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20160105 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 807892 Country of ref document: AT Kind code of ref document: T Effective date: 20160715 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602012019671 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160922 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 807892 Country of ref document: AT Kind code of ref document: T Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160923 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161022 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161024 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602012019671 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20170323 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170208 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170208 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20120208 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160622 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20230206 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240207 Year of fee payment: 13 Ref country code: GB Payment date: 20240208 Year of fee payment: 13 Ref country code: CH Payment date: 20240301 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20231211 Year of fee payment: 13 Ref country code: FR Payment date: 20240208 Year of fee payment: 13 |