EP0211784B1 - Küchenhaube - Google Patents

Küchenhaube Download PDF

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Publication number
EP0211784B1
EP0211784B1 EP19860440053 EP86440053A EP0211784B1 EP 0211784 B1 EP0211784 B1 EP 0211784B1 EP 19860440053 EP19860440053 EP 19860440053 EP 86440053 A EP86440053 A EP 86440053A EP 0211784 B1 EP0211784 B1 EP 0211784B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
kitchen
hood
hood according
air
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.)
Expired
Application number
EP19860440053
Other languages
English (en)
French (fr)
Other versions
EP0211784A1 (de
Inventor
Norbert Fritsch
Edgar Fritsch
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.)
R FRITSCH SA
Original Assignee
R FRITSCH SA
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
Priority claimed from FR8510608A external-priority patent/FR2584630B1/fr
Application filed by R FRITSCH SA filed Critical R FRITSCH SA
Priority to AT86440053T priority Critical patent/ATE48907T1/de
Publication of EP0211784A1 publication Critical patent/EP0211784A1/de
Application granted granted Critical
Publication of EP0211784B1 publication Critical patent/EP0211784B1/de
Expired 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

Definitions

  • the invention relates to a range hood for professional kitchens or individual family kitchens, comprising a rigid envelope provided, on the one hand, at its lower part, with a suction opening, arranged above cooking appliances such than cookers or other and, on the other hand, deflectors or suction pipes defining air circulation channels provided with water injection nozzles for degreasing cooking fumes.
  • a ventilation hood for the polluted air in fatty matter rising from the culinary appliances has a compartment with two walls.
  • This compartment contains a first filter composed of fine shavings of a stainless metal or any other type of known filter.
  • This filter is cooled by a circulation of cold water channeled between the two walls of the compartment. Through this filter, a large part of the impurities is retained, the polluted air being sucked in via a fan and then discharged by the latter into a washing compartment formed by a multitude of walls formed by baffles.
  • the cold water coming from the two-walled compartment is directed to a collector provided with a plurality of nozzles arranged between each interval separating two walls of the washing compartment.
  • the sprayed water mist is directed in the direction of advance of the polluted air, sometimes it is directed against this advance. Therefore, it is necessary that the fan is relatively large to overcome the resistance formed by the water mists projected in the opposite direction of the advancement of the polluted air.
  • these hoods are provided with filters intended to rid the cooking vapors of their grease, and these filters require frequent cleaning, especially when the kitchen is used intensively as is the case in particular for community kitchens or of restaurants.
  • an extractor hood comprising an extractable degreasing cartridge.
  • the latter is interposed between the hood inlet and a fan.
  • This fan sucks the polluted fat air through this degreasing cartridge.
  • This comprises a first series of parallel deflectors. At the entrance to this first series of deflectors is arranged a nozzle ramp whose water jets are directed in the direction of movement of the air. After passing through this first series of parallel deflectors, the polluted air is directed towards a second series of deflectors. Near this second series of deflectors is arranged a second nozzle boom with several branches. One of these branches projects the water in countercurrent with respect to the movement of the aspirated air.
  • this type of hood is characterized by a difficult and expensive maintenance and by a waste of energy since, whatever the degree of use of the kitchen at a given moment, the whole of the hood and the means of extraction must work.
  • the mechanical extraction of the vapors must be started both in the case where all the cooking elements or ranges are used, as in the case where only one cooking element is used.
  • the present invention aims to remedy these drawbacks.
  • the invention as characterized in the claims, solves the problem of creating a range hood for professional kitchens or individual family kitchens, comprising a rigid envelope provided, on the one hand, at its bottom, with '' a suction opening arranged above cooking appliances such as cookers or others and, on the other hand, deflectors or suction pipes defining air circulation channels provided with injection nozzles d water for degreasing cooking fumes, this hood further comprising means for extracting stale air from kitchen appliances and utensils constituted by the injection nozzles located near an opening made in one deflectors or at the inlet of the suction pipes creating vacuum zones and placed either between the deflectors defining the path of the stale air, or in the suction pipes arranged downstream of the path stale air, the treated air being reintroduced into the kitchen after treatment.
  • the hood 1 mainly consists of a rigid envelope 2, in particular made of stainless metal, and intended to be placed above cookers 3 or cooking appliances producing fatty vapors.
  • the hood 1 is preferably fixed to a wall or to a support by means of its rear face 4, so as to overhang the cooker 3 or the cooking utensils.
  • the hood 1 also has, at its lower part 5, a suction opening 6 disposed above the cooking utensil in order to capture the vapors.
  • suction means 7 intended to create vacuum zones 8 causing suction and circulation of stale air from cooking appliances and utensils.
  • the range hood 1 proposes to reintroduce the air which s '' rushes into the hood 1 after having rid it of dirt and grease vapors.
  • the aforementioned suction means 7 of the hood 1 are constituted by one or more water jets 9 coming from injection nozzles 10 arranged inside the hood.
  • these water jets 9 passing close to the openings 11 are intended to create a vacuum allowing suction of the stale air which engages in the suction opening 6.
  • the water jets 9 coming from the injection nozzles 10 are directed between deflectors 12 defining the path of the polluted air in the hood 1.
  • the means 8 for treating stale air consist of a mist 13 formed of fine water droplets, and created by the water jets 9.
  • This mist 13 makes it possible to fix the greases contained in the stale air, then to deposit them on the deflectors 12 by simple condensation of the mist 13. In this way, after its passage between the different deflectors 12, the air is freed from its fatty vapors and can be reinjected into the kitchen via a reinjection orifice 14 arranged in the upper part 15 of the rigid envelope 2.
  • the controls for starting and stopping the hood which usually consist of electrical switches for controlling the operation of an electric extractor, are here replaced by a simple tap 16 controlling the opening or closing of the injection nozzles 10, and placed for example on the front face 17 of the rigid casing 2 of the kitchen hood 1.
  • the implementation of the principle of suction and treatment of cooking vapors from the hood 1 according to the invention can take several embodiments, and the embodiment shown in FIGS. 1 and 2 is not in no way limitative.
  • the deflectors 12 arranged inside the hood 1 define the air circulation channels 18, affecting the shape of baffles in order to lengthen the path of the air passing through the hood and thus allow more effective treatment.
  • deflectors 12 are distributed in two or more sets 19 of plates 20 arranged in parallel and in an inclination with respect to a horizontal plane, their lower ends 21 being oriented towards means 22 for collecting and evacuating waste water laden with impurities. and / or fats.
  • the plates 20 constituting the deflectors 12 can advantageously be arranged in the form of an inverted V (FIG. 1), while being offset with respect to each other, which allows the wastewater to flow only towards the recovery means. 22, while preventing drops of fat from falling from the hood onto the stove 3.
  • the means 22 for recovering and evacuating waste water are constituted by troughs 23 arranged in the lower part 5 of the rigid casing 2 of the hood 1, said troughs 23 opening into a collector 24 connected to an evacuation duct. 25 leading to the sewer.
  • the operation of the hood 1 according to the invention can be further improved by thermally connecting the deflectors 12 to a heat exchanger device in order to recover the energy contained in the form of heat in the stale hot air and transmitted by contact to said deflector 12.
  • the hood 1 according to the invention is characterized by great modularity, since a larger hood can be formed by a set of several elementary and independent kitchen hoods 1, juxtaposed or not above various cooking elements of a kitchen.
  • hoods 1 do not require connection to connecting pipes or air exhaust to the outside, as is the case for hoods known in the current state of the technical.
  • the hoods 1 according to the invention are therefore completely independent of the geometry and structure of the building.
  • the hood 1 according to the invention has among its advantages a very low manufacturing and operating cost, a total absence of maintenance since it is completely self-cleaning due to the circulation of water, and a fully functioning security.
  • the invention provides a second embodiment of the hood.
  • the hood 101 essentially consists of a rigid envelope 102 made of stainless metal, intended to be placed above stoves or cooking appliances 103 producing fatty vapors which it is necessary to regenerate.
  • the suction means of the hood 102 according to the invention must be effective enough to capture the fatty vapors well above the cooking appliance 103.
  • the suction means 107 of the hood 101 are hidden behind the front part 117 of the rigid casing 102 of relatively low height for considerations of space, and consist of suction pipes 134 cooperating with water jets 109 located at the entrance to said suction pipes 134.
  • suction pipes 134 cooperating with water jets 109 located at the entrance to said suction pipes 134.
  • the suction opening 106 comprises a suction funnel 130 directing the fatty and hot vapors towards a suction duct 131 into which it opens out by means of a suction neck 132.
  • the suction duct 131 preferably inclined towards the rear face 104 of the hood 101, optimally has a decreasing section from the suction neck 132, in order to accentuate the effect of depression created by the jets d 109.
  • suction duct 131 ends with an injection chamber 133 in which are housed the injection nozzles 110 creating the water jets 109.
  • these injection nozzles 110 are connected upstream to a water supply circuit via a pipe 111.
  • the fatty vapors collected Downstream of the water jets 109, the fatty vapors collected are mixed with a mist 113 of water droplets formed by said water jets 109, and consequently, the fatty vapors are ready to be regenerated by the hood 101 conforming to the invention.
  • the water jets 109, coming from the injection nozzles 131, are directed in the direction of circulation of the stale air.
  • the hood 101 comprises means for treating stale air, which also consist of the pipes 134 allowing the evacuation of fatty vapors and the reintroduction of the regenerated air into the kitchen space, thus contributing to operation in cycle formed by the hood 101.
  • nozzles 134 of any cross section but preferably circular, cooperate, on the one hand, with the water jets 109 and, on the other hand, with a drain collector 124 for fatty water, leading to the sewer by via an exhaust duct 125.
  • each pipe 134 is composed of two distinct sections, namely, on the one hand, a downward section 135 disposed between the injection chamber 109 and the discharge manifold 124 and, on the other hand, an upward section 136 disposed between the evacuation manifold 124 of fatty water, and an orifice 114 for injecting regenerated air into the kitchen.
  • Said descending 135 and ascending 136 sections are preferably communicating in the vicinity of their lower ends, at the level of the discharge manifold 124 in which they allow the drops of fatty water to drip as a result of the condensation of fatty vapors.
  • the walls 137 and 138 of each section 135 and 136 of tubing form condensation walls, along which the drops of waste water 139 flow into the discharge collector 124.
  • the fatty vapors are first collected by means of suction means 107 which are very efficient and discreet since they have a small footprint, then these fatty vapors are treated by the processing means 108 located in the vicinity of the rear face 104 of the hood, before the clean air, thus very economically and simply regenerated, is reintroduced into the kitchen at the orifice 114 to be reused.
  • hood 101 according to the invention can be subdivided into a certain number of identical elementary hoods and juxtaposed, in order to be able to modulate the suction capacity necessary according to the needs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Prevention Of Fouling (AREA)

Claims (9)

1. Küchenhaube (1, 101) für Großküchen oder Haushaltsküchen, mit starrem Gehäuse (2, 102), das einerseits, an seinem unteren Teil (5, 105), mit einer Ansaugöffnung (6, 106) versehen ist, die über Kochgeräten wie, beispielsweise, Kochherden oder anderen angebracht ist und, anderseits, mit Leitblechen (12, 112) oder Ansaugrohrleitungen (134), die Kanäle (18, 118) für den Luftkreislauf bilden und mit Wassereinspritzdüsen (10, 110) zum Entfetten der Kochdünste ausgestattet sind, dadurch gekennzeichnet, daß sie Mittel zum Ansaugen der gebrauchten Luft aus den Küchengeräten und -utensilien umfaßt, die aus den Einspritzdüsen (10, 110) bestehen, die sich in der Nähe einer Öffnung (11) befinden, die in einem der Leitbleche (12) oder am Eingang der Ansaugrohrleitungen (134) angebracht ist, die Unterdruckbereiche (8, 108) schaffen und entwerder zwischen den Leitblechen (12) angebracht sind, die den Weg der verbrauchten Luft bilden, oder in den Ansaugleitungen (134), die strömungsabwärts vom Weg der verbrauchten Luft angeordnet sind, wobei die aufbereitete Luft im Anschluß an ihre Aufbereitung wieder in die Küche eingeführt wird.
2. Küchenhaube gemäß Anspruch 1, dadurch gekennzeichnet, daß die Einspritzdüsen (10, 110) Wasserstrahler (9, 109) aufzeigen, die in die Wegrichtung der verbrauchten Luft zeigen, die in die Ansaugöffnung (6, 106) der Haube (1) eintritt.
3. Küchenhaube gemäß Anspruch 1, dadurch gekennzeichnet, daß die Leitbleche (12) im Hinblick auf die Rückgewinnung der in der warmen verbrauchten Luft enthaltenen Energie thermisch an einen Wärmeaustauscher angeschloßen sind.
4. Küchenhaube gemäß Anspruch 1, dadurch gekennzeichnet, daß die Ansaugleitungen (134), einerseits, mit der Ansaugöffnung (134) und, andererseits, mit einem Sammler (124) des fettigen Wassers zusammenwirken, der an den Abwasserkanal angeschloßen ist.
5. Küchenhaube gemäß Anspruch 4, dadurch gekennzeichnet, daß die Ansaugöffnung (106) einen Ansaugtrichter (130) umfaßt, der über einen Ansaughals (132) in Ansaugleitungen (131) mündet, wobei diese Ansaugleitungen (131) in Einspritzkammern (133) enden.
6. Küchenhaube gemäß Anspruch 5, dadurch gekennzeichnet, daß die vorerwähnten Ansaugleitungen (131) zwischen dem Ansaughals (132) und der Einspritzkammer (133) einen sich verjüngenden Abschnitt aufzeigen.
7. Küchenhaube gemäß Anspruch 1, dadurch gekennzeichnet, daß die vorerwähnten Ansaugrohrleitungen (134), einerseits, aus einem absteigenden Abschnitt (135) bestehen, der zwischen der Einspritzkammer (133) und dem Ableitungssammler (124) angeordnet ist und, andererseits, aus einem aufsteigenden Abschnitt (136), der zwischen dem Ableitungssammler (124) des fettigen Wassers und der Öffnung (114) zum Einführen der aufbereiteten Luft angeordnet ist.
8. Küchenhaube gemäß Anspruch 7, dadurch gekennzeichnet, daß die absteigenden (135) und aufsteigenden (136) Abschnitte der Ansaugrohrleitungen (134) am Ableitungssammler (134) miteinander in Verbindung stehen und jeweils mit Wänden (137, 138) zum Kondensieren der fettigen Dünste versehen sind.
9. Küchenhaube gemäß einem beliebigen der vorstehenden Ansprüche, dadurch gekennzeichnet, daß sie aus einer Einheit verschiedener, elementarer und unabhängiger Küchenhauben (1) besteht, in Verbandanordnung oder nicht, wobei jede die Unterdruckbereiche (8, 108) umfaßt.
EP19860440053 1985-07-09 1986-06-30 Küchenhaube Expired EP0211784B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86440053T ATE48907T1 (de) 1985-07-09 1986-06-30 Kuechenhaube.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8510608A FR2584630B1 (fr) 1985-07-09 1985-07-09 Hotte de cuisine
FR8510608 1985-07-09
FR8602777 1986-02-26
FR8602777A FR2594725B2 (fr) 1985-07-09 1986-02-26 Hotte de cuisine

Publications (2)

Publication Number Publication Date
EP0211784A1 EP0211784A1 (de) 1987-02-25
EP0211784B1 true EP0211784B1 (de) 1989-12-20

Family

ID=26224611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860440053 Expired EP0211784B1 (de) 1985-07-09 1986-06-30 Küchenhaube

Country Status (4)

Country Link
EP (1) EP0211784B1 (de)
DE (1) DE3667720D1 (de)
ES (1) ES2000472A6 (de)
FR (1) FR2594725B2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020762A1 (de) * 1990-02-10 1991-08-14 Hans Dieter Voelk Koch- oder bratgeraet
DE10020205C5 (de) * 2000-04-25 2004-06-03 Reiner Heede Dunstabzugshaube mit Kondensatabscheider

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749197A1 (fr) * 1996-05-28 1997-12-05 Frima Sa Module d'aspiration et de destruction des vapeurs pour un appareil industriel de traitement par la vapeur notamment un appareil de cuisson des aliments
DE19912913A1 (de) * 1999-03-22 2000-09-28 Manfred H Langner Verfahren und Vorrichtung zur Reinigung von Dunstabzugshauben
US8475244B2 (en) 2009-10-05 2013-07-02 Lincoln Global, Inc. Fume hood having V-shaped baffle
CN105351989A (zh) * 2015-11-23 2016-02-24 武汉达顺创新科技有限公司 一种高效抽油烟机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364147A (fr) * 1963-05-10 1964-06-19 Procédé et dispositif de ventilation de l'air pollué en matières grasses s'élevant des appareils culinaires
US3628311A (en) * 1969-07-07 1971-12-21 Nino S Inc Air purification systems
US3802329A (en) * 1972-08-18 1974-04-09 L Wright Grease extractor for kitchen ventilating systems
FR2336985A1 (fr) * 1975-12-31 1977-07-29 Bertucci Albert Dispositif d'evacuation des fumees, vapeurs et graisses particulierement pour cuisine de restaurant ou de collectivite
US4103676A (en) * 1976-11-03 1978-08-01 Kastner Karl F Grease extraction cartridge for kitchen exhaust ventilator
FR2399268A1 (fr) * 1977-08-01 1979-03-02 Gaillat Louis Dispositif de filtration de fumees grasses culinaires

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020762A1 (de) * 1990-02-10 1991-08-14 Hans Dieter Voelk Koch- oder bratgeraet
DE10020205C5 (de) * 2000-04-25 2004-06-03 Reiner Heede Dunstabzugshaube mit Kondensatabscheider

Also Published As

Publication number Publication date
ES2000472A6 (es) 1988-03-01
EP0211784A1 (de) 1987-02-25
FR2594725A2 (fr) 1987-08-28
DE3667720D1 (en) 1990-01-25
FR2594725B2 (fr) 1988-09-02

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