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 relates to a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes.
• Such flue advantageously may be used for extracting cooking fumes from kitchens of any type, for example within the scope of restaurants services, but also in private homes.
• the flues the object of the present invention are used together with the so-called “filtering hoods” which extract cooking fumes and after filtering them, re-emit them into the same indoor room.
• a flue known from the background art comprises a first vertical and rectilinear stretch.
• Such first stretch has an inlet section which can be connected to any filtering hood on the market.
• the first vertical stretch branches off into a pair of second curved stretches which diverge from one another.
• Each second stretch ends with a respective outlet opening of the fumes.
• the fumes are discharged along a horizontal direction.
• the outlet openings lie on respective parallel vertical planes.
• the outlet openings are each closed by a respective grid so that it is possible to prevent the introduction of objects from the outside.
• the grid following the transit of the cooking fumes, the grid generates turbulence in the fumes themselves. The turbulence is transmitted therefore to the grid which, vibrating against the flue, becomes a significant source of noise.
• the technical task at the basis of the present invention is to propose a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes, which overcomes the above-mentioned drawbacks of the known technique.
• One embodiment of the invention relates to a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes.
• Such flue comprises a first stretch that develops along a vertical direction from an inlet section.
• the flue has at least one outlet opening for discharging the fumes along a substantially horizontal direction.
• Such outlet opening has a height along the vertical direction and a width along a direction orthogonal to the vertical direction.
• the flue comprises a second joining stretch between the first stretch and the outlet opening.
• the height of the opening is less than 40 mm, preferably less than 35 mm.
• the flue according to the invention resolves the technical problem. Indeed, by reducing the height of the outlet opening and optionally varying the width thereof, it is possible to keep the same aerodynamic performances of the known flue. However, since the height of the opening was reduced, it is no longer possible to introduce a hand or tool therein.
• the shape itself of the opening meets the safety requirements without requiring the installation of a grid, which therefore may be omitted.
• the noise of the flue is therefore significantly reduced.
• FIG. 1 is a perspective view of a first embodiment of a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes, according to the present invention.
• FIG. 2 is a side section view of a second embodiment of a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes, according to the present invention.
• 1 indicates a flue for evacuating fumes from rooms, in particular for evacuating cooking fumes, according to the present invention.
• Flue 1 comprises a first stretch 2 which develops along a vertical direction "A". Such stretch is defined at least partly by a substantially cylindrical conduit 3, in which the central axis coincides with the mentioned vertical direction "A".
• An inlet section 2a of the first stretch 2 is placed at the base of the conduit 3.
• the cooking fumes that are evacuated from the flue 1 are sucked by a hood (not illustrated) placed in fluid communication with the conduit 3, even if it is not necessarily connected directly thereto.
• the first stretch 2 also has an entrance zone 2b placed close to the inlet section 2a.
• Such entrance zone 2b has a constant section along the vertical direction "A".
• the flue 1 also has at least one outlet opening 4 for discharging the fumes.
• the fumes are discharged along a substantially horizontal direction.
• the opening 4 is defined on a vertical plane, that is to say parallel to the vertical direction "A".
• the flue 1 has a pair of openings 4.
• Such openings 4 are symmetrical in shape and arrangement with respect to a centreline plane of the flue 1.
• the centreline plane is arranged along said vertical direction "A".
• the central axis of the conduit 3 lies on the centreline plane.
• outlet openings 4 are rectangular-shaped.
• the outlet openings 4 each have a height along the vertical direction "A" and a width along a direction orthogonal to the vertical direction "A".
• the height is less than 40 mm, preferably less than or equal to 35 mm.
• each outlet opening 4 that is to say the product between the height and the width, is comprised between 48 and 56 cm 2 , more preferably equal to 52 cm 2 .
• the flue 1 also comprises a second joining stretch 5 between the first stretch 2 and the outlet opening 4.
• the flue 1 comprises a pair of second stretches 5.
• Each second stretch 5 connects the first stretch 2 to a respective opening 4.
• the flue 1 branches off from the first stretch 2 to the second stretches 5.
• the second stretches 5 have an upper surface 6. Such upper surface 6 is continuous between the two openings 4.
• the upper surface 6 has a constant development along a horizontal direction parallel to the centreline plane. Contrarily, the upper surface 6 is inclined towards the centreline plane. In greater detail, the upper surface 6 is curved in the direction of the centreline plane.
• a nose 7 of the flue 1 is defined at the junction of the two second stretches 5 from the first stretch 2, that is to say at the centreline plane that defines the plane of symmetry of the flue 1.
• Such nose 7 in particular is defined by an intersection line between the centreline plane in the upper surface 6.
• the upper surface 5 has a first connection 8 at the nose 7.
• the upper surface 5 also has a pair of second connections
• the conduit 3 also has a side surface 10.
• Such side surface 10 substantially is cylindrical along the entrance zone 2b of the first stretch 2.
• connection portion 10b with the outlet opening 4.
• connection portion 10b is opposite to the upper surface 5 and has a third connection 11 at the second connection 9.
• connection portion 10b has a development which substantially follows the upper surface 5.
• the side surface 10 also has a portion 10c that is transverse to the upper surface 5. Such transverse portion 10c substantially is arranged vertically.
• the behaviour of a fluid current within a conduit is characterized on the basis of non-dimensional parameters, that is to say compared to a reference parameter of the same type.
• the linear lengths are adimensionalized with respect to a distance "LI” between the outlet opening 4 and the centreline plane of the flue 1.
• the surfaces are adimensionalized with respect to the area "S" of the outlet opening 4.
• the adimensionalized distance between the inlet section 2a and the nose 7 is comprised between 0.7 and 0.75.
• An adimensionalized radius of the mentioned first connection 8 is comprised between 0.03 and 0.06.
• the adimensionalized length of the entrance zone 2b is less than 0.3.
• the second stretch 5 has a plurality of transverse sections each defined by a respective vertical plane.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Ventilation (AREA)
• Separating Particles In Gases By Inertia (AREA)
• Disintegrating Or Milling (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=58402072

Family Applications (1)

Country Status (9)

Family Cites Families (9)

• 2016
  • 2016-12-06 IT IT102016000123970A patent/IT201600123970A1/it unknown
• 2017
  • 2017-10-30 ES ES17803997T patent/ES2973517T3/es active Active
  • 2017-10-30 MX MX2019006391A patent/MX2019006391A/es unknown
  • 2017-10-30 EP EP17803997.0A patent/EP3551940B1/de active Active
  • 2017-10-30 US US16/466,604 patent/US20190346149A1/en not_active Abandoned
  • 2017-10-30 CA CA3045240A patent/CA3045240A1/en not_active Abandoned
  • 2017-10-30 WO PCT/IB2017/056712 patent/WO2018104809A1/en not_active Ceased
  • 2017-10-30 EA EA201991231A patent/EA035523B1/ru not_active IP Right Cessation
  • 2017-10-30 PL PL17803997.0T patent/PL3551940T3/pl unknown

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