EP2896892A1 - In einem Kochfeld integrierte Dunstabzugshaube - Google Patents

In einem Kochfeld integrierte Dunstabzugshaube Download PDF

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Publication number
EP2896892A1
EP2896892A1 EP15151381.9A EP15151381A EP2896892A1 EP 2896892 A1 EP2896892 A1 EP 2896892A1 EP 15151381 A EP15151381 A EP 15151381A EP 2896892 A1 EP2896892 A1 EP 2896892A1
Authority
EP
European Patent Office
Prior art keywords
movable part
container
extractor hood
work plan
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.)
Withdrawn
Application number
EP15151381.9A
Other languages
English (en)
French (fr)
Inventor
Patrick Forlin
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.)
CONCEPT SWISS AG Kitchen Systems
Original Assignee
CONCEPT SWISS AG Kitchen Systems
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 CONCEPT SWISS AG Kitchen Systems filed Critical CONCEPT SWISS AG Kitchen Systems
Publication of EP2896892A1 publication Critical patent/EP2896892A1/de
Withdrawn legal-status Critical Current

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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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft

Definitions

  • the present invention relates to an extractor hood built into or integrated in the hob of a kitchen, fitted with powered fan for extracting fumes and vapours generated during the preparation and cooking of food.
  • the invention refers to an extractor hood integrated in a hob.
  • hoods that can be arranged in a position between the recessed rest position and the protruding operating position, and that extract downward the fumes and vapours generated above the hob so as to recirculate them in the ambient atmosphere or vent them outside the kitchen environment after having filtered them.
  • the hoods of the prior art employ, as an outflow duct for fumes and vapours, an arrangement consisting of a container and a movable part that slides within it; in particular, some of said hoods feature gaskets installed on the contact edges to guarantee their airtightness and facilitate the extraction of the fumes.
  • the cooking apparatus described in patent application US2006/278215 illustrates a movable hood built into a cooking top and provided with gaskets within it.
  • a first gasket is located between the base of the housing of the movable element and the housing of a compressor, and a second gasket is used to seal the inner movable element and the hood housing to reduce air leaks.
  • the American patent application US 2008/029081 also describes a retractable extractor hood integrated in a kitchen cooking top.
  • the internal element can be sealed from the housing in which it slides so as to prevent air leaks.
  • the sealing can be achieved by means of gaskets to reduce the gap between the internal element and the container fastened to the base.
  • the American Patent Application US 2010/059040 describes the use of a gasket installed on the face of the hob inside the cabinet on the edge in contact with the movable part.
  • the gasket has the double function of preventing the passage of dirt from the hob to the underlying space and of adjusting the extraction position of the movable part thanks to friction.
  • the proposed solution employs a construction that is capable of extracting more effectively the fumes and vapours produced during cooking, overcoming the drawbacks of the prior art, thanks to the adoption of a duct of smaller cross section inside the hood that conveys the flow of fumes and vapours generated by the extractor motor.
  • the internal duct reduces the flow resistance due to the leaks that can occur at the points of contact between the surfaces that form the fixed housing in which the movable part slides, or on the edges of holes necessary, for example, for mounting guides or other functional components designed for moving the movable part.
  • Another purpose of the invention is to provide a hood of the above type that makes it possible to easily and readily extract the devices that control the lifting and lowering of the movable part.
  • Figure 1 illustrates a preferred embodiment of the extractor hood integrated in the hob and designed to slide vertically according to the invention.
  • Said embodiment features a structure generally of a parallelepiped shape, although with suitable modifications within the capabilities of a skilled technician in the field, this specification can be applied to other shapes, such as for example cylindrical extractor hoods.
  • the perspective view illustrates the main elements of the extractor hood: a movable part 1 that slides vertically inside a container 2, a motorized extractor fan 4 connected through a connecting duct 5 to the bottom of said container 2.
  • the container 2 includes a frame 2A ( Fig. 2 ) on which is mounted a first surface 2B having at its centre an opening 2C necessary to communicate said container 2 with said connecting duct 5.
  • a continuous lateral surface is made up of a pair of sides 2D, 2E that can be fastened with known means to the upright elements of said frame 2A.
  • the remaining side, opposite to the first surface 2B, is open to allow the engagement and the vertical movement of said movable part 1.
  • Guides 7 are mounted on the internal surface of said sides 2D of the container and are apt to engage corresponding elements 6 mounted on the movable part 1 in the manner described below.
  • At least one of the sides 2E not provided with guides 7 is removable to allow access to the mechanisms of the extractor hood housed inside said container 2. Said removable side 2E, when it is placed in position to close the container 2, is fastened with known means on an edge 2F of said container 2.
  • the connecting duct 5 is fastened externally to the container 2 at the opening 2C; the width of its face in contact with said container 2 is such as to provide an airtight mating along the edge of said opening 2C. Said connecting duct 5 also rotatably supports said motorized extractor fan 4.
  • a fixed conduit 13 is mounted internally and coaxially to the container 2 on the wall 2B.
  • the cross section of said fixed duct 13 is of such dimensions that its perimeter is fastened in an air-tight manner along the edge of said opening 2C.
  • a free edge of said fixed conduit is bent inwardly so as to support a gasket 17 ( Fig. 2 , detail A).
  • the movable part 1 is a supporting box-shaped parallelepiped structure having dimensions such as to be engaged slidingly inside said container 2.
  • a lateral surface of said movable part 1 is made up of a pair of larger closed sides 1 D, two smaller sides 1C and two opposed openings ( Fig. 1 ).
  • the upper edge of at least one of said sides 1 D has a profile shaped so as to create at least one opening 1 H through which flow fumes and vapours drawn in by said motorized extractor fan 4 when the extractor hood is closed by an upper cover 1 A.
  • the upper portion of said movable part 1 contains filtering elements 8 to clean the vapours and fumes drawn in by said motorized extractor fan 4, support structures 9 for said filters 8 and a box-shaped element 1 E.
  • Said support structures 9 are closed within said movable part 1 so as to prevent the leakage of fumes or vapours.
  • a removable cover 1 F In an upper part of said box-shaped element 1 E, closed at the top by a removable cover 1 F, are contained mechanisms 1 G for the fine adjustment of the position of said movable part 1, so that the upper surface of said cover 1 A is coplanar with the surface of the hob when the extractor hood is in the rest position, that is, inserted into the container 2.
  • a hopper-shaped conveyor 10 installed in such a position as to be crossed by the fumes that have already gone through said filtering elements 8.
  • An edge of said conveyor 10 nearest the support structure 9 is fastened so as to adhere to the internal surface of said movable part 1 and prevent the leakage of the extracted fumes; on a free edge opposite said conveyor 10 is also air-tightly fastened a movable duct 11.
  • Said movable duct 11 ends with an edge bent outwardly so as to support a gasket 12 ( Fig. 2 , detail A).
  • the extractor hood of the present invention includes an actuator 3 to displace the movable part 1 vertically in response to control signals given by the user through a control unit normally known and not shown, such as a keyboard or a remote control unit.
  • the actuator 3 comprises a first hollow internally threaded rod 3A; said rod 3A is driven by an electric motor (not shown) contained in its lower end, that is, near the side 2B of the container 2. On said lower end of the rod 3A is provided a through hole in which a pin 14 is engaged. The ends of said pin 14 project from the base of said rod 3A and engage holes 15 provided on the walls of the fixed conduit 13 and in corresponding positions on the frame 2A.
  • a second rod 3B is threaded externally: a first end of the same is screwed into the first rod 3A and a second end is connected in said box-shaped element 1 E of said movable part 1 through a second pin 16.
  • the rotation of the first rod 3A driven by the motor in a first direction makes the second rod 3B slide axially to displace the movable part 1 to the extracted position; vice versa, the rotation in the opposite direction makes the second rod 3B slide in the opposite direction and causes the movable part 1 to return into the container 2.
  • the head of said rod 3B has a through hole, or eyelet, in which is engaged said second pin 16, the ends of which are connected to opposite walls of said box-shaped element 1 E.
  • the upper portion of the movable part 1, the conveyor 10, the movable duct 11 and the fixed duct 13 form a closed, air-tight path for the extracted fumes and vapours that conveys them from the surface of the hob to discharge or recirculating ducts through said motorized extractor fan 4.
  • the lateral surfaces of all four components 1, 10, 11 and 13 are continuous and do not have any holes necessary to fasten elements such as the guides 7 or the container itself 2 to the structure of the hob. Moreover, the different sections that compose it are all joined to each other so as to prevent the leakage of fumes or vapours, for example by means of welding. The only exception results from the point of contact between the free edges of the movable duct 11 and of the fixed duct 13. The pressure loss at this point are however eliminated thanks to the presence of the gaskets 12 and 17 and to the limited extent of the contact area. Consequently, with the power of the motor being the same, it is possible to obtain a stronger suction or else it is possible to adopt motors of smaller power and size. It thus becomes unnecessary to seal all the holes necessary for mounting the guides 7, as well as to apply gaskets on the edges of the removable panel 2E of the container 2.
  • the design choice of placing the actuator 3 in a coaxial position with all the elements 1, 10, 11 and 13 that form the conduit for the extracted fumes makes it possible to rotate the powered extractor fan 4 on a plane perpendicular to the common axis of said elements, so as to be orientated according to the spaces available in the support structure of the hob, to the position of the ducts necessary for discharging the fumes and vapours, or to the arrangement of the kitchen walls, without thereby negatively affecting the effectiveness of the fume extraction or requiring particular connections or processing solutions.
  • the coaxial embodiment of the telescopic conduit entails another advantage over the extractor hoods currently available on the market.
  • the absence of bends reduces flow resistance, with further positive effects on the reduction of the power and/or of the dimensions of the powered extractor fan 4.

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)
EP15151381.9A 2014-01-20 2015-01-16 In einem Kochfeld integrierte Dunstabzugshaube Withdrawn EP2896892A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN20140003 2014-01-20

Publications (1)

Publication Number Publication Date
EP2896892A1 true EP2896892A1 (de) 2015-07-22

Family

ID=50391289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15151381.9A Withdrawn EP2896892A1 (de) 2014-01-20 2015-01-16 In einem Kochfeld integrierte Dunstabzugshaube

Country Status (1)

Country Link
EP (1) EP2896892A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3504482B1 (de) 2016-08-26 2021-06-09 BSH Hausgeräte GmbH Kombinationsgerät umfassend ein kochfeld und eine dunstabzugsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226558A1 (en) * 2002-06-06 2003-12-11 Khosropour Mostafa Michael Kitchen island vent hood
US20060278215A1 (en) 2005-05-02 2006-12-14 Gagas John M Adjustable downdraft ventilator
US20070079823A1 (en) * 2005-10-12 2007-04-12 Hyeon-Gu Shin Exhauster for roaster
US20080029081A1 (en) 2005-08-01 2008-02-07 Gagas John M Low Depth Telescoping Downdraft Ventilator
US20100059040A1 (en) 2008-09-09 2010-03-11 Timothy Scott Shaffer Vent system for a cooking appliance
US20130319400A1 (en) * 2012-06-05 2013-12-05 Gerhart S. Langenbach Downdraft That is Telescoping

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226558A1 (en) * 2002-06-06 2003-12-11 Khosropour Mostafa Michael Kitchen island vent hood
US20060278215A1 (en) 2005-05-02 2006-12-14 Gagas John M Adjustable downdraft ventilator
US20080029081A1 (en) 2005-08-01 2008-02-07 Gagas John M Low Depth Telescoping Downdraft Ventilator
US20070079823A1 (en) * 2005-10-12 2007-04-12 Hyeon-Gu Shin Exhauster for roaster
US20100059040A1 (en) 2008-09-09 2010-03-11 Timothy Scott Shaffer Vent system for a cooking appliance
US20130319400A1 (en) * 2012-06-05 2013-12-05 Gerhart S. Langenbach Downdraft That is Telescoping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3504482B1 (de) 2016-08-26 2021-06-09 BSH Hausgeräte GmbH Kombinationsgerät umfassend ein kochfeld und eine dunstabzugsvorrichtung

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