EP0136738A2 - Hotte d'évacuation - Google Patents

Hotte d'évacuation Download PDF

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Publication number
EP0136738A2
EP0136738A2 EP84201118A EP84201118A EP0136738A2 EP 0136738 A2 EP0136738 A2 EP 0136738A2 EP 84201118 A EP84201118 A EP 84201118A EP 84201118 A EP84201118 A EP 84201118A EP 0136738 A2 EP0136738 A2 EP 0136738A2
Authority
EP
European Patent Office
Prior art keywords
filter box
exhaust hood
air
blower housing
filter
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Withdrawn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
EP84201118A
Other languages
German (de)
English (en)
Other versions
EP0136738A3 (fr
Inventor
Rudolph Jacobi
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.)
Bv Handelmaatschappij Exactum
Original Assignee
Bv Handelmaatschappij Exactum
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 Bv Handelmaatschappij Exactum filed Critical Bv Handelmaatschappij Exactum
Publication of EP0136738A2 publication Critical patent/EP0136738A2/fr
Publication of EP0136738A3 publication Critical patent/EP0136738A3/fr
Withdrawn legal-status Critical Current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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the invention relates to an exhaust hood comprising a blower housing arranged within the hood and having a substantially vertical axis, said blower housing having an apertured bottom joining a filter box with a substantially horizontal bottom which is detachably connected to the exhaust hood, the bottom of the blower housing forming, moreover, the upper wall of the filter box, said filter box having a height which is small in proportion to its length and width, and which is, at its inner side, provided with air deflection means causing the air taken in by the blower to follow a tortuous path, whereby substances entrained by the air can settle on said deflection means.
  • Such an exhaust hood is a.o. disclosed in US PS 3,768,237.
  • the filter box forms, together with the bottom plate of the blower housing, a detachable unit, said box being open at least at one side, and at least one of both boundary walls being provided with projections deflecting the air flow taken in so as to produce the desired separation.
  • the bottom plate and the lower plate are interconnected by means of a hinge. The unit thus formed can be easily cleaned. Since the exhaust openings are provided in the lateral wall of the box, the air flow in the filter box taken in is mainly horizontally directed.
  • a disadvantage of this known exhaust hood consists in that the air flow taken in horizontally at the narrow lateral sides (and in practice only at the front side). This means that vapour originating from a cooking apparatus placed under the hood will not be uniformly exhausted. In the case of a considerable and particularly sudden, vapour production, a portion thereof can escape towards the surroundings of the hood, also because the exhaust capacity is restricted by the relatively small cross-section of the filter box opening. Furthermore the vapour can condense against the lower plate of the filter box, which will lead to drop formation and also deposition of grease etc.
  • the detachable lower plate of the filter box is made air-pervious, while the air deflection means are formed by a filter sheet made of metal mesh or apertured or expanded metal, covering at least the lower plate.
  • one or more lateral walls of the filter box can be made pervious, whereupon the filter sheet will be bent upwards along the lateral wall in question.
  • the filter sheet consists of stainless steel in order to prevent corrosion by the vapours.
  • Such a filter sheet can provide a more effective separation than the projections of the known filter box, so that soiling of the blower and the blower housing will be reduced, and cleaning thereof will be required less repeatedly.
  • the bottom plate of the blower housing can be separately detachably connected to the exhaust hood, so that this plate should not always be removed together with the filter box.
  • the drawing shows a diagrammatical representation of an embodiment of the exhaust hood according to the invention, the lower part thereof being shown at 1.
  • Vertical walls 2 and a horizontal bottom 3 define a blower housing 4 within this hood, inside which a blower body 5 is rotatably arranged and is, by means of a shaft 6, coupled with a drive motor, not shown.
  • the blower housing 4 can have a helical shape, and the discharge side thereof communicates with a discharge duct, not shown.
  • the bottom plate 3 is provided with an opening 7 connecting with the interior of the blower body, so that this opening 7 acts as the intake opening of the blower.
  • a filter box 8 is provided below the bottom plate 3 of the blower housing 4 .
  • a filter box 8 is provided consisting of a lower plate 9 and lateral walls 10, said filter box 8 being adapted to be detachably fixed to lateral walls (not shown) of the exhaust hood 1 proper or of the blower housing 4, e.g. by means of rear brackets 11 and snap locks or latches 12 arranged at the front side. If the above-mentioned fixed lateral walls sufficiently join the lower plate 9, a front wall 10 may suffice for closing the inner space of the filter box 8.
  • the lower plate 9 of the filter box 8 is air pervious, and can, to that end, be provided with a large number of apertures, or can, for the greater part, consist of open wire mesh or the like. Also the front wall can be made pervious in this manner, and, if the filter box 8 is provided with independent lateral walls, also the latter can be made pervious if desired.
  • a sheet 13 of metal mesh or apertured or expanded metal is supported, said sheet consisting, particularly, of stainless steel or a similar corrosion-resistant material.
  • the filter sheet is to be bent upwards, as shown, against this upstanding wall.
  • the air taken in by the blower 5 will mainly (and in the case of closed lateral walls 10 fully) enter, through the open lower plate, into the filter box 8, the air being repeatedly deviated in the very narrow passages in the filter sheet 13, so that deposition of substances entrained by the air, in particular water vapour and grease, will take place there.
  • This separation is, in view of the character of these passages, very effective, so that the air let through will be substantially free of entrained substances.
  • the bottom plate 3 directed towards the filter box 8, and also the blower body 5, will be only slightly exposed to soiling.
  • the filter box For cleaning the filter box it suffices to release the locking means 11, and to remove the lower plate 9 (together with the lateral walls connected thereto) from the hood 1. Then the filter sheet 13 can be taken away to be separately cleaned. This can be done in a more simple manner than in the case of the known filter boxes with extending ribs or teeth which, generally, have to be brushed clean.
  • the bottom plate 3 can, for instance, be supported in sliding guides, or can be fixed by means of a snap connection or the like, so that it can be easily unfastened for cleaning also the interior of the blower housing at larger intervals. It is, of course, also possible to place the bottom plate 3 as a loose cover on the filter box, so that, then this plate is always removed from the hood together with the box.

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)
  • Percussion Or Vibration Massage (AREA)
  • Prevention Of Fouling (AREA)
  • Cyclones (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Ventilation (AREA)
EP84201118A 1983-09-02 1984-07-30 Hotte d'évacuation Withdrawn EP0136738A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8303054 1983-09-02
NL8303054A NL8303054A (nl) 1983-09-02 1983-09-02 Afzuigkap.

Publications (2)

Publication Number Publication Date
EP0136738A2 true EP0136738A2 (fr) 1985-04-10
EP0136738A3 EP0136738A3 (fr) 1986-05-28

Family

ID=19842336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201118A Withdrawn EP0136738A3 (fr) 1983-09-02 1984-07-30 Hotte d'évacuation

Country Status (4)

Country Link
EP (1) EP0136738A3 (fr)
DK (1) DK360784A (fr)
NL (1) NL8303054A (fr)
NO (1) NO842950L (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB849304A (en) * 1957-07-18 1960-09-21 Duct Less Hood Co Inc Kitchen air conditioners
FR2299900A1 (fr) * 1975-02-06 1976-09-03 Godefroy Raymond Filtre ininflammable
GB1455382A (en) * 1974-01-15 1976-11-10 Expanded Metal Filter elements
FR2346643A1 (fr) * 1976-03-31 1977-10-28 Bosch Siemens Hausgeraete Appareil epurateur d'air, en particulier hotte d'evacuation des fumees et buees, a installer au-dessus de cuisinieres et d'appareils analogues
US4089328A (en) * 1976-11-02 1978-05-16 Futurumverken Ab Kitchen ventilator
WO1983000377A1 (fr) * 1981-07-24 1983-02-03 Molitor Ind Inc Procede et appareil permettant de temperer de l'air d'appoint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB849304A (en) * 1957-07-18 1960-09-21 Duct Less Hood Co Inc Kitchen air conditioners
GB1455382A (en) * 1974-01-15 1976-11-10 Expanded Metal Filter elements
FR2299900A1 (fr) * 1975-02-06 1976-09-03 Godefroy Raymond Filtre ininflammable
FR2346643A1 (fr) * 1976-03-31 1977-10-28 Bosch Siemens Hausgeraete Appareil epurateur d'air, en particulier hotte d'evacuation des fumees et buees, a installer au-dessus de cuisinieres et d'appareils analogues
US4089328A (en) * 1976-11-02 1978-05-16 Futurumverken Ab Kitchen ventilator
WO1983000377A1 (fr) * 1981-07-24 1983-02-03 Molitor Ind Inc Procede et appareil permettant de temperer de l'air d'appoint

Also Published As

Publication number Publication date
EP0136738A3 (fr) 1986-05-28
NO842950L (no) 1985-03-04
NL8303054A (nl) 1985-04-01
DK360784D0 (da) 1984-07-23
DK360784A (da) 1985-03-03

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE GB LI LU NL SE

PUAL Search report despatched

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Designated state(s): AT BE CH DE GB LI LU NL SE

17P Request for examination filed

Effective date: 19861027

17Q First examination report despatched

Effective date: 19870428

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19891013

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JACOBI, RUDOLPH