EP3526521A1 - Hood for the suction of cooking fumes - Google Patents
Hood for the suction of cooking fumesInfo
- Publication number
- EP3526521A1 EP3526521A1 EP17832803.5A EP17832803A EP3526521A1 EP 3526521 A1 EP3526521 A1 EP 3526521A1 EP 17832803 A EP17832803 A EP 17832803A EP 3526521 A1 EP3526521 A1 EP 3526521A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hood
- panel
- box
- shaped body
- duct
- 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
- 239000003517 fume Substances 0.000 title claims abstract description 25
- 238000010411 cooking Methods 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
Definitions
- the present invention relates to a hood for the suction of cooking fumes.
- the present invention relates to a vertical hood, that is to say, a hood wherein the suction opening is placed on a non-horizontal plane.
- a vertical hood that is to say, a hood wherein the suction opening is placed on a non-horizontal plane.
- Such hoods are usefully employed in kitchens of private homes, restaurants, dining halls or in any environment in which it is necessary to cook food and evacuate cooking fumes.
- the vertical hoods are known in the prior art.
- Such hoods comprise a box-shaped body in which a suction is housed.
- the box-shaped body has one or more non-horizontal openings, that is to say, arranged substantially along a vertical direction.
- the openings are arranged along an oblique direction, that is to say, they are inclined both with respect to a vertical direction and with respect to a horizontal direction.
- a suction motor assembly is housed in the box-shaped body and, through a duct, is placed in fluid communication with the opening.
- Such an assembly is also placed in fluid communication with a cooking fumes extraction pipe, in such a way to introduce the fumes in such an extraction pipe to extract them from the room.
- noise is noted in the known hoods, mainly attributable to the transit of air through the grills and the filters placed to shield the fan of the suction motor assembly. Vibrating, such elements dissipate energy through acoustic waves that, entering in resonance with the ducts and metal parts of the hood are then transmitted to the exterior.
- the technical task at the basis of the present invention is to propose a hood for the suction of cooking fumes that overcomes the above-mentioned drawbacks of the prior art.
- the hood according to the invention resolves the technical problem in that the resonance cavities, suitably calibrated, allow for the creation of acoustic waves that, covering the noise produced by the grill panel, cancel it at least at the side walls, preventing it from propagating off the side walls towards the exterior. Since such a side wall produces the majority of acoustic emissions out of all the surfaces of the box-shaped body, it is possible to reduce the noise produced by the hood and transmitted to the exterior.
- FIG. 1 is a prospective view of a hood for the suction of cooking fumes according to the present invention
- FIG. 2 is a frontal view of the hood in Figure 1 ;
- FIG. 3 is a top view of the hood in Figures 1 and 2;
- FIG. 4 is a prospective exploded view of the hood in Figures 1 and 2 with some parts removed to better show others.
- reference numeral 1 indicates a hood for the suction of cooking fumes according to the present invention.
- the hood 1 comprises a box-shaped body 2. As shown for example in figure 2, the box-shaped body 2 defines the lower section of the hood 1 and, in use, it is therefore facing the stove.
- the box-shaped body 2 has at least one wall 2a, 2b, 2c, 2d, 2e in contact with the external environment.
- the box-shaped body has a lower wall 2a, an upper wall 2b, a pair of side walls 2c, a front wall 2d and a back wall 2e.
- the lower wall 2a directly faces the stove and, in use, it is arranged substantially horizontally, that is to say substantially perpendicular to one vertical direction "A".
- the upper wall 2b is arranged substantially parallel to the lower wall 2a, therefore it also is substantially perpendicular to the vertical direction "A".
- the back wall 2e is connected to the upper 2b and lower 2a walls, in particular it is arranged transversely and in particular perpendicularly to them.
- the back wall 2e faces or is placed in contact with a wall.
- the front wall 2d is connected to the upper 2a and lower walls.
- the front wall 2d is also substantially inclined with respect to the vertical direction "A". It is noted that, in particular due to the inclination of the front wall 2d, the upper wall 2b generally has a larger surface with respect to the lower wall 2a.
- the side walls 2c are arranged parallel to each other and are connected to the upper 2b, lower 2a, and back 2e walls. It is noted that, according to the preferred embodiment of the invention, the side walls 2c have a trapezoidal shape.
- the box-shaped body 2 defines at least one duct 3 for the suction of cooking fumes.
- a duct 3 has at least one opening 4 facing an external environment and, in particular, arranged on an inclined plane with respect to the vertical direction "A".
- the opening 4 is arranged preferably along an oblique direction, therefore also inclined with respect to a horizontal direction.
- the opening 4 is inclined at an angle of between 15° and 30°, preferably exactly at 21°, with respect to the vertical direction "A".
- the box-shaped body 2 defines a pair of ducts 3, each having its own suction opening 4.
- the already mentioned front wall 2d, partially covering the frontal zone of the box-shaped body 2, is placed between the openings 4. Even more particularly, the openings 4 are arranged symmetrically with respect to the front wall 2d.
- the hood 1 also comprises an evacuation flue 6, placed centrally and above the box-shaped body 2.
- the flue 6 is placed in fluid communication with the ducts 3.
- the hood 1 also comprises suction means 5.
- suction means 5 are placed in fluid communication with the ducts 3 and the flue 6.
- the suction means 5 are configured to suction the cooking fumes from the ducts 3 and expel them through the flue 6.
- the suction means 5 are per se known to the man skilled in the art, and will therefore not be described in detail.
- the suction means 5 can comprise a suction motor assembly with a suction centrifuge.
- the suction means 5 are housed in a compartment 7 formed within the box-shaped body 2.
- a compartment 7 is placed behind the front wall 2d, and is arranged between the above-mentioned ducts 3.
- the hood 1 also comprises at least one grill panel 8 facing the suction means.
- the grill panel 8 is in particular placed between the duct 3 and the suction means 5.
- the panel 5 has the purpose of closing the compartment 7 of the suction means 5 leaving the cooking fumes to pass through and allowing a first filtration of the same cooking fumes. Such filtration occurs by favouring the condensation of the suspended fat and oil present in the fumes, in addition to the steam.
- the grill panel 8 is arranged parallel to the side wall 2c.
- the grill panel 8 is arranged parallel to the vertical direction "A".
- the grill panel 8 is inclined with respect to said vertical direction "A”. Similar to the side walls 2c, the grill panel 8 has a trapezoidal shape.
- the hood 1 comprises, in the preferred embodiment, at least two grill panels 8, each one placed to close a respective duct 3.
- the structure of each grill panel 8 is per se known to the man skilled in the art, and will therefore not be described in detail.
- Some filters are positioned inside the compartment 7, downstream of each grill panel 8.
- the grill panels 8 are removable for cleaning, in addition to allow for the substitution of the filters and the cleaning of the compartment 7.
- the hood 1 also comprises at least one perforated panel 9, inserted in the duct 3 and opposite of the grill panel 8.
- the perforated panel 9 is also arranged between the side wall 2c and the grill panel 8.
- the perforated panel 9 faces the side wall 2c, in such a way to define a plurality of acoustic resonance cavities 10 in cooperation with the side wall 2c itself.
- the perforated panel 9 has a plurality of holes 11 distributed substantially uniformly across the perforated panel 9.
- the perforated panel 9 is arranged parallel to the side wall 2c. In other words, the perforated panel 9 is arranged parallel to the vertical direction "A". In an alternative embodiment, not shown, the perforated panel 9 is inclined with respect to said vertical direction "A".
- the hood 1 comprises two perforated panels 9, each one inserted within a respective duct 3 and facing a respective side wall 2c.
- the operating mechanism of the cavities 10 defined by the perforated panel 9 is based on the Helmholtz resonance. Consequently, by suitably selecting the dimensions of the holes 11, their spacing on the perforated panel 9 and the distance of each perforated panel 9 from the respective side wall 2c, it is possible to define a resonance frequency of the cavities 10, making the perforated panel 9 capable of diminishing the acoustic vibrations produced by the movement of the cooking fumes in the ducts 3 and, in particular, by the passage of the grill panels 8.
- the hood 1 comprises at least a sound-absorbing panel 12 arranged between the perforated panel 9 and the side wall 2c of the box-shaped body.
- the sound- absorbing panel 12 uniformly covers all of the internal surface of the side wall 2c.
- the sound-absorbing panel 12 contributes to the sound absorbing both directly, that is to say diminishing a large spectrum of frequencies, and by amplifying the spectrum of frequencies of the cavities 10.
- the hood 1 also comprises at least one support frame 13. Such a frame 13 is inserted in the duct 3, and is removable from said duct 3.
- the grill panel 8 is able to be fixed to the frame 13 to allow for extraction from the duct 3 together with the frame 13.
- the perforated panel 9 can be fixed to the frame 13 in a position opposite with respect to the grill panel 8.
- the frame 13 comprises an upper wall 13a, a back wall 13b and a lower wall 13c.
- the upper wall 13a is facing the upper wall 2b of the box-shaped body 2.
- the back wall 13b faces the back wall 2e of the box-shaped body 2.
- the lower wall 13c faces the lower wall 2° of the box-shaped body 2.
- the hood 1 comprises a pair of frames 13 each one inserted in a respective duct 3.
- each frame 13 has a window 14 that defines a respective opening 4.
- the window 14 is opposite to the back wall 13 b.
- the hood 1 comprises at least one removable drawer 15 to collect a condensate of cooking fumes.
- Said drawer 15 is placed under the frame 3 and, optionally, under the compartment 7 of the suction means 5.
- the drawer 15 is placed under one or both grill panels 8.
- Each grill panel 8 is provided with channels (not shown) to direct the condensate and the collected fat inside the drawer 15.
- the hood 1 comprises two drawersl5, each one placed under a respective grill panel 8.
- the hood 1 comprises a cover panel 16 for the opening 4.
- Said cover panel 16 is in particular hinged to the upper edge 2f of the box-shaped body 2.
- the cover panel 16 is convertible between a first configuration, in which it covers the opening 4 and a second configuration, in which it completely uncovers the opening 4.
- the cover panel 16 is in the first configuration, therefore it is arranged parallel to the opening 4 and distanced from it, in order to allow for the entrance of air into the opening 4.
- the cover panel 16 is rotated into the second configuration, that is to say in a position substantially horizontal and raised with respect to the box-shaped body 2, in order to allow for the removal of the frames 13 from said box-shaped body.
- the hood 1 comprises a single cover panel 16 capable of covering both openings 4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102016000102040A IT201600102040A1 (en) | 2016-10-11 | 2016-10-11 | Extraction hood for cooking fumes. |
PCT/IB2017/056220 WO2018069813A1 (en) | 2016-10-11 | 2017-10-09 | Hood for the suction of cooking fumes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3526521A1 true EP3526521A1 (en) | 2019-08-21 |
EP3526521B1 EP3526521B1 (en) | 2020-08-12 |
Family
ID=57910059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17832803.5A Active EP3526521B1 (en) | 2016-10-11 | 2017-10-09 | Hood for the suction of cooking fumes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3526521B1 (en) |
EA (1) | EA035806B1 (en) |
IT (1) | IT201600102040A1 (en) |
WO (1) | WO2018069813A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109140547A (en) * | 2017-06-27 | 2019-01-04 | 博西华电器(江苏)有限公司 | Range hood |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3364664A (en) * | 1964-07-20 | 1968-01-23 | Cockle Ventilator Company Inc | Grease extractor for ventilating systems |
DE4443176C1 (en) * | 1994-12-05 | 1996-05-02 | Gaggenau Werke | Low-noise extractor hood |
CN2259575Y (en) * | 1996-04-23 | 1997-08-13 | 王利军 | Deep cooking fume exhauster with double-blade wheel longitudinally arranged |
KR20040025043A (en) * | 2002-09-18 | 2004-03-24 | 주식회사 엑타 | exhaust chamber moise decrease structure |
FR2911520B1 (en) * | 2007-01-19 | 2009-08-28 | Roblin Sas Soc Par Actions Sim | HOOD ASPIRING FOR KITCHEN |
CN201273623Y (en) * | 2008-08-06 | 2009-07-15 | 明宜工业股份有限公司 | Improved slanting back type oil smoke exhauster structure |
CN202452550U (en) * | 2011-12-19 | 2012-09-26 | 海尔集团公司 | Range hood |
DE202013100130U1 (en) * | 2013-01-11 | 2014-04-14 | Carcoustics Techconsult Gmbh | Acoustic damping element for a household appliance, in particular for an extractor hood; Household appliances with acoustic damping element |
DE102013100271A1 (en) * | 2013-01-11 | 2014-07-17 | Miele & Cie. Kg | Hood |
CN205048522U (en) * | 2015-10-20 | 2016-02-24 | 浙江科恩电器有限公司 | Range hood |
-
2016
- 2016-10-11 IT IT102016000102040A patent/IT201600102040A1/en unknown
-
2017
- 2017-10-09 EP EP17832803.5A patent/EP3526521B1/en active Active
- 2017-10-09 WO PCT/IB2017/056220 patent/WO2018069813A1/en unknown
- 2017-10-09 EA EA201990874A patent/EA035806B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IT201600102040A1 (en) | 2018-04-11 |
WO2018069813A1 (en) | 2018-04-19 |
EP3526521B1 (en) | 2020-08-12 |
EA201990874A1 (en) | 2019-09-30 |
EA035806B1 (en) | 2020-08-13 |
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