EP0727620A2 - Hotte aspirante pour buée - Google Patents

Hotte aspirante pour buée Download PDF

Info

Publication number
EP0727620A2
EP0727620A2 EP96101929A EP96101929A EP0727620A2 EP 0727620 A2 EP0727620 A2 EP 0727620A2 EP 96101929 A EP96101929 A EP 96101929A EP 96101929 A EP96101929 A EP 96101929A EP 0727620 A2 EP0727620 A2 EP 0727620A2
Authority
EP
European Patent Office
Prior art keywords
aperture
extractor hood
wave
hood according
area
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
Application number
EP96101929A
Other languages
German (de)
English (en)
Other versions
EP0727620A3 (fr
EP0727620B1 (fr
Inventor
Peter Dipl.-Ing. Rohrbach (Fh)
Wilfried Dipl.-Ing. Rückert (FH)
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0727620A2 publication Critical patent/EP0727620A2/fr
Publication of EP0727620A3 publication Critical patent/EP0727620A3/fr
Application granted granted Critical
Publication of EP0727620B1 publication Critical patent/EP0727620B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C15/2078—Removing cooking fumes movable
    • F24C15/2092—Removing cooking fumes movable extendable or pivotable
    • 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
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the invention relates to an extractor hood with a wave transmitter and wave receiver, in particular an ultrasound transmitter and ultrasound sensor, and a sensor path, as a result of which the condition of the air in the intake area is detected and, depending on this, the extractor hood is controlled.
  • the present invention is based on the object of perfecting such an extractor hood in such a way that clear and at least largely unadulterated useful signals for controlling the extractor hood are obtained from the wave bundle emanating from the wave transmitter on the wave receiver.
  • the aperture bundle emitted by the wave transmitter towards the wave receiver is arranged within an aperture, and that the aperture area surrounding the aperture is outside the aperture continuous wave bundle Waves hiding any influence on the measured value on the wave receiver.
  • the measures according to the invention prevent disturbances and thus functional impairments with respect to the control signal from becoming noticeable within the sensor path, but at least at the wave receiver in relation to the signal-emitting waves as a result of reflections or interference phenomena.
  • a sharply delimited wave bundle is obtained through the diaphragm or its aperture, from which interference waves running outside it are masked out or eliminated.
  • the diaphragm in the middle area between the wave transmitter wave receiver and the reflection area.
  • a suppression of interference waves can take place in that the diaphragm surrounding the aperture has a wave that strikes it due to the reflecting shape directed to the side. It has proven to be advantageous if the preferably annular diaphragm area is inclined by approximately 35 ° with respect to the orthogonal shaft axis. In addition or instead of the aforementioned reflective shape, provision can be made be that the at least one aperture area surrounding the aperture has an at least partially absorbing nature of the waves.
  • a diaphragm In the case of using a reflection area with twice the length of the sensor path, a diaphragm has proven to be suitable which has an inclined incline on both sides of the aperture, e.g. has annular diaphragm areas, the one diaphragm area being part of a concave and the other diaphragm area being part of a convex ring shape.
  • Such an aperture can be made of thin material and very space-saving.
  • An extractor hood as shown in Figures 1 and 2, is suitable for typical use above hobs in kitchens. Such hobs are usually essentially square and have four hobs. 2, a projection of the position of these hotplates 15 onto the underside of the extractor hood is indicated by dashed lines. An appropriately widened extractor hood can be used for wider cooktops.
  • an electric motor-operated blower 3 which draws air from the space 4 and thus generates negative pressure there and blows out this air via an outlet connection 5.
  • the room 4 is closed by a so-called fat filter 6, through which contaminated air, particularly during roasting and cooking processes, passes as a result of the negative pressure prevailing in the room 4, the grease and other contamination particles largely be absorbed in this grease filter 6.
  • the space 4 is designed to be closed and the grease filter 6 is inserted into a receptacle in such a way that as far as possible no air is sucked in except through the grease filter.
  • a carbon filter 7 can be used within the room 4, which is able to absorb odors.
  • a drawer-like pull-out 8 is arranged in the housing of the extractor hood and can be pulled out to the front. In the figures, this is in the pulled out Position shown.
  • This drawer-like pull-out 8 is provided on the front, on the top and on the side walls with solid walls.
  • a filter element, a so-called pre-filter 9, is inserted on the underside.
  • a flat channel 10 is formed by the walls of the drawer-like pull-out 8 and the pre-filter 9, which ends openly in the front region of the grease filter 6 when the drawer-like pull-out 8 is pulled out.
  • An apron 11 closes this channel 10 towards the filter 6.
  • the grease filter 6 In order to achieve the highest possible cleaning effect for the contaminated air that is brought in, the grease filter 6 must be designed as densely and homogeneously as possible, as a result of which it not only offers a high absorption capacity, but also opposes the air with a relatively high flow resistance.
  • the fan must be correspondingly powerful in order to generate the necessary, under pressure in the room 4 to overcome this grease filter 6 by the air to be cleaned.
  • This vacuum is not available in front of the filter 6 and so in the present extractor hood in the drawer-like pull-out 8 a filter element is used which, in order to be flowed through at all, is designed to be very permeable.
  • the absorption capacity of this prefilter 9 is thus also relatively low, which is not only accepted with approval, but is also desirable.
  • the actual cleaning of the contaminated air, which is passed through the prefilter 9, takes place in exactly the same way as the cleaning of the air which is otherwise sucked in in the main grease filter 6.
  • a substantial negative pressure within the channel 10 becomes considerable due to the lack Flow resistance in the area of the prefilter 9 is not built up anyway.
  • the actual main filter 6 can, for example, have eight to twelve layers in expanded metal, whereas the prefilter 9 has only two to four layers of expanded metal. As a result, there is less overlap of the individual interstices of the expanded metal layers and the permeability is so low that the air flowing through can pass through almost without hindrance and without a significant drop in pressure.
  • a sensor device 12 Arranged within the channel 10, that is above the prefilter 9, is a sensor device 12, which is explained in more detail below and which detects the rising smoke from the hotplates and evaluates it to control the extractor hood.
  • this sensor device in this channel 10 is substantially protected against contamination. From the corresponding area of the main filter 6, the pollutant components of the air are essentially filtered out, which mainly remain because their readiness to fall out of the air is poorer.
  • a piezo oscillator 17 serving as a wave transmitter is arranged on the one side wall of the drawer-like pull-out 8.
  • This piezo oscillator 17 is connected to a circuit arrangement (not explained in more detail) in such a way that this piezo oscillator 17 acts as an ultrasound transmitter in a first activation phase and as an ultrasound sensor or receiver in a second activation phase.
  • a reflection region 16 for the ultrasonic waves is arranged on the opposite side of the drawer-like pull-out 8, so that they come back onto the piezoelectric oscillator and are reflected back again. As shown in FIG.
  • the sensor path between the piezo oscillator 12 and the reflection area 13 runs in an area which runs in a projection onto a cooktop arranged underneath between the front and rear hotplates.
  • Both the piezo oscillator 12 and the reflection region 16 lie in the channel 10 formed by the drawer-like pull-out 8 and its filter element 9, so that these elements are not exposed to an increased risk of contamination.
  • the diaphragm 18 has an annular shape with annular diaphragm regions 21 and 22 around the aperture 19. These diaphragm regions 21 and 22 have an obliquely inclined shape, preferably of 35 ° with respect to the shaft axis orthogonal (angle ⁇ ), which causes waves to be reflected towards the Wave receiver 12 is excluded, that is, these waves, which do not belong to the wave bundle delimited by the aperture 19, are reflected to the side after striking the diaphragm areas.
  • the aperture 18 has aperture areas 21, 22 running on both sides of the aperture 19, which form a concave shape on one side and a convex shape on the other side, the wall thickness of the aperture 18 being constant in these aperture areas 21/22, as is clear Fig. 4 shows.
  • a bearing lug 23 is integrally formed on the annular diaphragm 18, which is provided at both ends on the free end with a pair of resilient bearing projections 24, each of which protrudes slightly beyond the lateral boundary of the bearing lug 23 and is supported there in a pivot bearing 25.
  • the bearing projection 23 has a stop 26 at the unfree end, which in the ready-to-use position of the pivotable diaphragm 18 strikes a front part of the upper limit of the channel 10 and thus exactly defines this ready-to-use position.
  • a free, resilient extension 27 Approximately diametrically opposed to the ring-shaped diaphragm 18 is also formed in one piece, a free, resilient extension 27, which resiliently supports the pre-filter 9 underneath in the ready position of the diaphragm according to FIG.
  • the aforementioned, paired bearing projections 24 engage in a link opening 28 of a pivot bearing for the diaphragm bearing eyes 29, which bearing eyes are formed by deformation of the upper boundary of the channel 10 of the pull-out 8, this link opening 28 freely opening to the outside and so that it is suitable for an embossing process.
  • the link openings 28 of the two bearing eyes 29 are open to each other and molded outwards Walls closed. Arranged in these link openings 28 are link guides 30 with an elongated, raised locking knob 31 as well as with a recessed bearing point 32.
  • the cover 18 with the bearing projections 24 engaging in the link guide can move approximately 90 ° in within the pivot bearing 25 Fig. 1 are pivoted down into the dashed position by overcoming the locking knob 31.
  • the resilient bearing projections 24 snap behind the locking knob 31, whereby the panel 18 is prepositioned ready for operation.
  • the diaphragm 18 is brought into the exact operating position by pressure on the attachment 27, in which the stop 26 - as mentioned - on the housing of the extract 8 strikes.
  • an approximately semicircular, disc-shaped coding web 33 is formed on the bearing projection 23, which projects downwards in the correct mounting position and makes it impossible to pivot the panel 18 in the wrong, wrong mounting position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
EP96101929A 1995-02-20 1996-02-09 Hotte aspirante pour buée Expired - Lifetime EP0727620B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19505683 1995-02-20
DE19505683A DE19505683A1 (de) 1995-02-20 1995-02-20 Dunstabzugshaube

Publications (3)

Publication Number Publication Date
EP0727620A2 true EP0727620A2 (fr) 1996-08-21
EP0727620A3 EP0727620A3 (fr) 1997-03-12
EP0727620B1 EP0727620B1 (fr) 2000-07-19

Family

ID=7754444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101929A Expired - Lifetime EP0727620B1 (fr) 1995-02-20 1996-02-09 Hotte aspirante pour buée

Country Status (2)

Country Link
EP (1) EP0727620B1 (fr)
DE (2) DE19505683A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307247A1 (de) * 2003-02-17 2004-08-26 E.G.O. Elektro-Gerätebau GmbH Einrichtung zum Absaugen von Abluft eines Elektrowärmegeräts und Verfahren zum Betrieb derselben
WO2006053818A1 (fr) * 2004-11-19 2006-05-26 BSH Bosch und Siemens Hausgeräte GmbH Dispositif d'evacuation de vapeurs et procede pour aerer une zone de cuisson
US8069628B2 (en) 2005-07-12 2011-12-06 Aluminum Pechiney Ring furnaces with improved expansion joints and bricks designed to build it
US8286626B2 (en) 2005-01-17 2012-10-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Kitchen extractor device
CN103673017A (zh) * 2013-12-16 2014-03-26 惠州柯林电器有限公司 抽油烟机
CN106439960A (zh) * 2016-08-31 2017-02-22 杭州老板电器股份有限公司 超声波自清洗吸油烟机及其方法
CN110701651A (zh) * 2019-09-27 2020-01-17 浙江蓝炬星电器有限公司 一种带有静音吸油烟装置的集成灶及其制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015204770B4 (de) 2015-03-17 2020-07-02 BSH Hausgeräte GmbH Befestigungsvorrichtung für ein Gehäuse einer Dunstabzugshaube und Dunstabzugshaube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603538A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée
EP0603539A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée avec une zone de détection acoustique
EP0603537A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7713358U1 (de) * 1976-10-06 1979-02-08 Giampieretti & Crescentini, Fabriano, Ancona (Italien) Absaugvorrichtung
DE7633882U1 (de) * 1976-10-28 1977-02-24 Jaecker, Franz Wolfgang, 4970 Bad Oeynhausen Elektrisch betriebene Dunstabzugshaube für eine An- oder Einbauküche mit einem Gas- oder Elektrokochherd mit/ohne Zeitschaltautomatik
DE2747710A1 (de) * 1977-10-25 1979-04-26 Licentia Gmbh Dunstabzugshaube zur anordnung ueber kuechenherden
DE3039246A1 (de) * 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
DE8027742U1 (de) * 1980-10-17 1985-04-18 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
DE3245302A1 (de) * 1982-12-08 1984-06-14 Miele & Cie GmbH & Co, 4830 Gütersloh Dunstabzugshaube mit einer kochplatte
DE3909126C2 (de) * 1989-03-20 1998-06-04 Diehl Gmbh & Co Schaltgerät für einen Kochherd
DE4105807A1 (de) * 1991-02-23 1992-08-27 Diehl Gmbh & Co Schaltungsanordnung zum ein- und abschalten eines luefters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603538A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée
EP0603539A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée avec une zone de détection acoustique
EP0603537A1 (fr) * 1992-12-23 1994-06-29 Bosch-Siemens HausgerÀ¤te GmbH Hotte aspiratrice de buée

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307247A1 (de) * 2003-02-17 2004-08-26 E.G.O. Elektro-Gerätebau GmbH Einrichtung zum Absaugen von Abluft eines Elektrowärmegeräts und Verfahren zum Betrieb derselben
WO2006053818A1 (fr) * 2004-11-19 2006-05-26 BSH Bosch und Siemens Hausgeräte GmbH Dispositif d'evacuation de vapeurs et procede pour aerer une zone de cuisson
US8286626B2 (en) 2005-01-17 2012-10-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Kitchen extractor device
US8069628B2 (en) 2005-07-12 2011-12-06 Aluminum Pechiney Ring furnaces with improved expansion joints and bricks designed to build it
CN103673017A (zh) * 2013-12-16 2014-03-26 惠州柯林电器有限公司 抽油烟机
CN103673017B (zh) * 2013-12-16 2016-08-17 张晶 抽油烟机
CN106439960A (zh) * 2016-08-31 2017-02-22 杭州老板电器股份有限公司 超声波自清洗吸油烟机及其方法
CN106439960B (zh) * 2016-08-31 2018-07-17 杭州老板电器股份有限公司 超声波自清洗吸油烟机及其方法
CN110701651A (zh) * 2019-09-27 2020-01-17 浙江蓝炬星电器有限公司 一种带有静音吸油烟装置的集成灶及其制造方法
CN110701651B (zh) * 2019-09-27 2023-12-05 浙江蓝炬星电器有限公司 一种带有静音吸油烟装置的集成灶及其制造方法

Also Published As

Publication number Publication date
DE59605613D1 (de) 2000-08-24
EP0727620A3 (fr) 1997-03-12
DE19505683A1 (de) 1996-08-22
EP0727620B1 (fr) 2000-07-19

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