EP0852320A1 - Desodorisieringsvorrichtung - Google Patents

Desodorisieringsvorrichtung Download PDF

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Publication number
EP0852320A1
EP0852320A1 EP97200024A EP97200024A EP0852320A1 EP 0852320 A1 EP0852320 A1 EP 0852320A1 EP 97200024 A EP97200024 A EP 97200024A EP 97200024 A EP97200024 A EP 97200024A EP 0852320 A1 EP0852320 A1 EP 0852320A1
Authority
EP
European Patent Office
Prior art keywords
housing
deodorizing device
network
outlet opening
odour
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.)
Pending
Application number
EP97200024A
Other languages
English (en)
French (fr)
Inventor
Cornelis Joseph Kroon
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.)
Individual
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
Priority to NL1000918A priority Critical patent/NL1000918C2/nl
Application filed by Individual filed Critical Individual
Priority to EP97200024A priority patent/EP0852320A1/de
Publication of EP0852320A1 publication Critical patent/EP0852320A1/de
Pending 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 a deodorizing device for waste gases comprising an at least substantially closed, box-shaped housing with an inlet opening and an outlet opening which are in communication with one another via a filtering unit which is accommodated in the housing.
  • the invention relates in particular to such a device for use in a deep-frying or frying installation, which may or may not be mobile, and whose waste gases are usually regarded as unpleasant and annoying on account of the odoriferous substances contained therein.
  • a known device of the kind mentioned in the opening paragraph is marketed by the firm of Hewigo and comprises an elongate, box-shaped housing with an inlet opening and an outlet opening at respective ends. Between the inlet opening and the outlet opening are found in that order in the housing: a bag filter for catching any oil or fat particles and a carbon filter which effects the actual odour filtering. Such a filter is claimed to be capable of achieving a 80% odour absorption.
  • the present invention has for its object inter alia to provide a deodorizing device of the kind mentioned in the opening paragraph which counteracts these disadvantages.
  • a deodorizing device of the kind mentioned in the opening paragraph is for this purpose characterized in that the filtering unit comprises a reservoir containing an odour-neutralizing liquid, and in that a fan is provided in or adjacent one of the two openings.
  • the fan in the device according to the invention serves to compensate for its internal resistance, so that the device can be used in combination with an existing exhaust device.
  • the fan may be placed at the inlet as well as at the outlet side of the device in principle, it is preferably placed at the outlet side. This is found to have a favourable effect on the gas flow through the device in practice.
  • a special embodiment of the device according to the invention is characterized in that a comparatively fine-mesh network is placed in front of the filtering unit.
  • the network for example a filter made of stainless steel, serves to retain oil, fat and dust particles floating in the waste gases so that the odour-neutralizing liquid is not polluted thereby and remains active for a longer period.
  • the waste gases come into contact with the odour-neutralizing liquid in the filtering unit. It is sufficient here for the waste gases to flow past the reservoir with the liquid; it is not necessary for the waste gases actually to be conducted through the liquid. The internal resistance of the device can thus remain limited. It is suspected that the active odouriferous ingredients in the waste gases are adsorbed by the neutralizing liquid and thus rendered inactive, i.e. odourless. A certain minimum dwell time of the waste gases in contact with the liquid should be observed for an optimum effectivity, so that the neutralizing liquid is given an opportunity to bind the odour molecules.
  • a further special embodiment of the device according tot he invention is characterized in that atomizing means are present at the inlet side of the device for fine-spraying of the odour-neutralizing liquid.
  • the waste gases have thus been pretreated and divested of part of their smell(s) before they are conducted over the odour-neutralizing liquid in the filtering unit. The efficiency of the device can be enhanced thereby.
  • a first embodiment of the device according to the invention shown in Fig. 1 comprises a box-shaped housing 1 of stainless steel on which a lid 2 is mounted in an airtight manner.
  • the network is formed by a conventional stainless steel oil/fat filter and serves to retain any oil, fat, and dust particles which may be present in the waste gases, so that the filtering unit 7 is not polluted thereby.
  • a profile (not shown) on which the network 5 is supported is provided at the inner wall of the housing, at some distance away from the bottom of the housing.
  • a reservoir 7 containing an odour-neutralizing liquid by means of which odoriferous substances are removed from the waste gases, or are at least rendered inactive.
  • the reservoir volume is adapted to the envisaged filtering capacity and is approximately 3 to 4 litres per 1000 m 3 /hour of filtering capacity. Such a quantity is found to be sufficient for an operating period of approximately months in normal use.
  • Several substances are suitable in principle for the removal of odours from waste gases. Besides the CORDA GNTM used here, for example, ECOCARETM is also suitable, both being commercially available and containing purely natural substances.
  • the former product has proved to have a higher effectivity in the removal of smells associated with the frying of fish.
  • This liquid is accordingly preferred, because the present embodiment of the device was specifically designed for this purpose. It is suspected that the ingredients of the waste gases responsible for the characteristic fried-fish smells are adsorbed by the liquid 7 and are rendered inactive, i.e. odourless thereby.
  • the device described has succeeded in achieving a substantially complete removal of these smells in practice in a mobile fish vending stand.
  • the tube 3 is integral with the remaining portion of the detachable lid 2, which facilitates a renewal of the liquid 7.
  • the lid 2 is simply detached together with the tube 3, whereupon the loose network 5 can be removed and, if necessary, cleaned.
  • the liquid is then topped up to the required level, after which the components 2,3,5 are mounted again in reverse order.
  • the tube 3 ensures that the network 5 is pressed home firmly into its seat during this.
  • the tube 3 projects a little from the lid 2 at its free end and comprises an inlet opening 10 by which the device is connected to the existing waste gas exhaust channel.
  • An outlet opening 20 through which the cleaned waste gases can leave the device is provided in one of the side walls of the housing 1 above the network 5.
  • a driven, possibly controlled fan 8 is mounted in the outlet opening 20, whereby the internal resistance of the device can be overcome and a backflow of the waste gases is prevented. Since the internal resistance is comparatively weak, an electrically driven fan with a power rating of approximately 20 W is sufficient here for obtaining a filtering capacity of 1400 to 4000 m 3 /hour.
  • the device of Fig. 1 is designed for incorporation into a vertical (part of a) waste gas exhaust channel.
  • the device of Fig. 2 on the other hand is a deodorizing device which is to be mounted in a horizontal waste gas exhaust channel.
  • the inlet opening 10 is in one of the side walls of the housing 1 in this case, and an outlet opening 20 with fan 8 is provided in the lid 2.
  • the inlet tube 3 here comprises an inner bend 9 through which the waste gases are guided to the reservoir 7 in the filtering unit 6 via the stainless steel filter.
  • the part of the side wall through which the inlet tube is passed can be detached from the remaining part of the housing so as to facilitate periodic maintenance of the interior of the device.
  • a third embodiment of the device according to the invention is shown in Fig. 3.
  • a raised partition wall 30 separating a first compartment 15 situated above the network 5 from a second compartment 25 is placed in the housing 1 in this case.
  • the housing is provided with the inlet opening 10 in the first compartment 15, whereas the outlet opening 20 with the fan 8 is arranged in the second compartment.
  • the partition wall 30 extends over the entire width or length, as applicable, of the housing and terminates at some distance above the reservoir 7.
  • the partition wall rests on the network 5, which has been made shorter here.
  • the incoming waste gases fill the first compartment 15 and are subsequently conducted very evenly over the reservoir 7 with the liquid. Not only does this achieve an optimum contact between the two, it also renders possible a reduction in the internal resistance of the device.
  • FIG. 4 depicts a fourth embodiment of the device according to the invention.
  • This embodiment of the device in addition comprises atomizing means 40 at the inlet side for fine-spraying of the liquid in situ, with the object of further improving the contact between the liquid 7 and the waste gases.
  • the atomizing means 40 are provided with their own separate stock of liquid 7, which can be supplied externally. The waste gases have thus been pretreated and divested of smells to a certain extent already before being conducted over the reservoir. This procedure enhances the effectivity of the device.
  • the effectivity of the device may also be enhanced in that the dwell time of the waste gases in contact with the reservoir is prolonged.
  • the device shown in Fig. 5 for this purpose comprises an elongate housing 1 in which a number of raised partition walls 50 are placed in a row. The partition walls are supported alternately by the one and by the other longitudinal side of the housing, leaving open a passage at the other side each time. Since the partition walls interconnect the top and bottom of the housing, the waste gases are forced to follow a meandering path.
  • the reservoir with the neutralizing liquid again extends over the entire bottom of the housing 1 here, so that the waste gases have to travel a very long way over the liquid.
  • the correspondingly long contact time with the liquid 7 promotes the dissociation or adsorption of odoriferous substances.
  • a fine-mesh network is again positioned at the inlet side between a partition wall 5 and the opposed wall for stopping any fat, oil, and dust particles.
  • a reservoir in which the liquid is forced to move about may be used instead of a passive reservoir.
  • air or some other gas is guided into the liquid, whether or not through a porous brick, or the liquid is made to swirl by some other means. An improved contact between the liquid and the waste gases is achieved thereby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
EP97200024A 1995-08-02 1997-01-07 Desodorisieringsvorrichtung Pending EP0852320A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL1000918A NL1000918C2 (nl) 1995-08-02 1995-08-02 Geurverwijderingsinrichting.
EP97200024A EP0852320A1 (de) 1995-08-02 1997-01-07 Desodorisieringsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000918A NL1000918C2 (nl) 1995-08-02 1995-08-02 Geurverwijderingsinrichting.
EP97200024A EP0852320A1 (de) 1995-08-02 1997-01-07 Desodorisieringsvorrichtung

Publications (1)

Publication Number Publication Date
EP0852320A1 true EP0852320A1 (de) 1998-07-08

Family

ID=26146036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200024A Pending EP0852320A1 (de) 1995-08-02 1997-01-07 Desodorisieringsvorrichtung

Country Status (2)

Country Link
EP (1) EP0852320A1 (de)
NL (1) NL1000918C2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0981028A1 (de) * 1998-08-17 2000-02-23 eloma GmbH Grossküchentechnik Verfahren und Vorrichtung zum Reinigen von Abluft aus Küchengeräten
EP1205714A3 (de) * 2000-11-09 2005-07-27 Mong-Yu Lee Rauchabzugvorrichtung
CN100467956C (zh) * 2006-08-31 2009-03-11 余曾福 一种环保抽油烟机
GB2505432A (en) * 2012-08-29 2014-03-05 Quest Ion Pte Ltd Air purifier which directs the air flow over a surface of water
CN106765370A (zh) * 2015-11-23 2017-05-31 烟台鹏程环保科技有限责任公司 一种油烟处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1000918C2 (nl) * 1995-08-02 1997-02-04 Cordas V O F Geurverwijderingsinrichting.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592459C (de) * 1934-02-07 Eugen Heilbrun Vorrichtung an Kuechenherden zur Vernichtung der beim Backen und Braten entstehenden oxydierbaren Gase und Daempfe mit unangenehmem Geruch
US4036994A (en) * 1975-03-21 1977-07-19 H.G.C. Construction & Equipment Company, Inc. Method for abating odor and smoke emissions in the vapor exhaust from a meat broiling grill
DE3100320A1 (de) * 1981-01-08 1982-07-22 Gebrüder Mayer KG, 5760 Arnsberg "vorrichtung zur abgabe eines geruchsvernichtenden stoffes in einen luftstrom, insbesondere bei kuechen-dunstabzugshauben"
NL1000918C2 (nl) * 1995-08-02 1997-02-04 Cordas V O F Geurverwijderingsinrichting.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592459C (de) * 1934-02-07 Eugen Heilbrun Vorrichtung an Kuechenherden zur Vernichtung der beim Backen und Braten entstehenden oxydierbaren Gase und Daempfe mit unangenehmem Geruch
US4036994A (en) * 1975-03-21 1977-07-19 H.G.C. Construction & Equipment Company, Inc. Method for abating odor and smoke emissions in the vapor exhaust from a meat broiling grill
DE3100320A1 (de) * 1981-01-08 1982-07-22 Gebrüder Mayer KG, 5760 Arnsberg "vorrichtung zur abgabe eines geruchsvernichtenden stoffes in einen luftstrom, insbesondere bei kuechen-dunstabzugshauben"
NL1000918C2 (nl) * 1995-08-02 1997-02-04 Cordas V O F Geurverwijderingsinrichting.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0981028A1 (de) * 1998-08-17 2000-02-23 eloma GmbH Grossküchentechnik Verfahren und Vorrichtung zum Reinigen von Abluft aus Küchengeräten
US6238463B1 (en) 1998-08-17 2001-05-29 Eloma Gmbh Grosskichentechnik Process and device for the cleaning of exhaust air from kitchen equipment
EP1205714A3 (de) * 2000-11-09 2005-07-27 Mong-Yu Lee Rauchabzugvorrichtung
CN100467956C (zh) * 2006-08-31 2009-03-11 余曾福 一种环保抽油烟机
GB2505432A (en) * 2012-08-29 2014-03-05 Quest Ion Pte Ltd Air purifier which directs the air flow over a surface of water
CN106765370A (zh) * 2015-11-23 2017-05-31 烟台鹏程环保科技有限责任公司 一种油烟处理装置
CN106765370B (zh) * 2015-11-23 2019-03-01 烟台鹏程环保科技有限责任公司 一种油烟处理装置

Also Published As

Publication number Publication date
NL1000918C2 (nl) 1997-02-04

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