EP1967796A1 - Hotte de cuisson avec rideau d'air - Google Patents

Hotte de cuisson avec rideau d'air Download PDF

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Publication number
EP1967796A1
EP1967796A1 EP07103758A EP07103758A EP1967796A1 EP 1967796 A1 EP1967796 A1 EP 1967796A1 EP 07103758 A EP07103758 A EP 07103758A EP 07103758 A EP07103758 A EP 07103758A EP 1967796 A1 EP1967796 A1 EP 1967796A1
Authority
EP
European Patent Office
Prior art keywords
air
air curtain
condenser
cooking
cooking hood
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Withdrawn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
EP07103758A
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German (de)
English (en)
Inventor
Henricus Wilhelmus Joannes Brouwer
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.)
ITHO BV
Original Assignee
ITHO BV
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 ITHO BV filed Critical ITHO BV
Priority to EP07103758A priority Critical patent/EP1967796A1/fr
Publication of EP1967796A1 publication Critical patent/EP1967796A1/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Withdrawn legal-status Critical Current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
    • F24C15/2028—Removing cooking fumes using an air curtain

Definitions

  • the invention relates to a cooking hood with a condenser for condensing moisture from air sucked up over a cooking range.
  • US patent No. 4,450,756 describes a cooking hood that provides for an air curtain around a kitchen range.
  • Cooking hoods serve to remove air with fumes from an area over a cooking range where food is prepared in the kitchen.
  • the cooking hood of US 4,450,756 sucks up air from over the cooking range, blows it through a filter and then guides it down in an air curtain around the periphery of the cooking range.
  • the filter removes fumes from the air before blowing the air back into the kitchen in the air curtain.
  • US 4,450,756 discloses a charcoal filter and an unspecified general filter for this purpose.
  • the air curtain keeps cooking fumes over the range from escaping into the kitchen. As a result the fumes do not present a problem even if a relatively small flow of air up from the kitchen range into the cooking hood is used.
  • the cooking hood is provided with a condenser in the duct to the outlet for blowing down the air curtain.
  • a condenser in the duct to the outlet for blowing down the air curtain.
  • the cooking hood comprises an air humidity sensor coupled to the condenser to control the condenser dependent on the sensed humidity, for example by activating the condenser only if the humidity exceeds a threshold.
  • the sensor may be located at various positions. In one embodiment it is located in the flow of air up into the cooking hood, to measure humidity near the filter. In another embodiment the sensor may be located in the duct to the outlet for the air curtain, before the condenser.
  • the inlet for air flow to the duct to the air curtain is separate from an outlet for the air flow from under the cooking hood, in the sense that the outlet for air flow from under the cooking hood blows air into the kitchen and the inlet for air flow to the duct to the air curtain sucks in air from the kitchen.
  • a closed circuit could be used, wherein airflow from under the cooking hood flows into the duct to the air curtain.
  • separate outlets and inlets have the advantage over the closed circuit alternative that grease that has passed the filters cannot clog the condenser.
  • air with a lower temperature from the kitchen is at least mixed in with the air for the air curtain.
  • the air above the kitchen range has a high temperature. By using air from the kitchen the efficiency of the dehumidification is higher than if air from over the kitchen range is used.
  • Figures 1-3 show cooking hoods
  • FIG. 1 shows a cooking hood comprising a suction duct 10 and an air curtain duct 15.
  • the cooking hood comprises a grease filter 1, a coal filter 6 and a first fan 12 in suction duct 10.
  • Air curtain duct 15 has outlets 16 for forming an air curtain 5 that at least partly surrounds a region from which suction duct sucks up air over the cooking range.
  • the cooking hood comprises a second fan 13 and a condenser 2 in air curtain duct 15.
  • Condenser 2 contains a water drain 3.
  • Suction duct 10 exhausts in an exhaust 18 into the room where the cooking hood is located. Exhaust 18 does not exhaust directly into air curtain duct 15, i.e. it at least allows other air from the kitchen to flow into air curtain duct 15.
  • first fan 12, and second fan 13 may be combined, using a first and second set of fan blades, both driven by a single motor via a single axle.
  • first fan 12 causes the cooking hood to suck up air from a region over a cooking range.
  • the air is passed through filters 1, 6 and exhausted from the cooking hood through exhaust 18.
  • Second fan 13 sucks in air from outside the cooking hood into the air curtain duct, where the air is fed through condenser 2 to air curtain outlets 16.
  • the outlets 16 are provided substantially all around a perimeter of the cooking range (as seen from above), or at least along an exposed part of the perimeter, e.g. along a front side and a left and right side, if the range is placed against a wall.
  • Air curtain 5 is directed so that it substantially prevents air from over the cooking range to flow out into space adjacent the range, i.e. normally the kitchen.
  • Condenser 2 dries the air.
  • condenser 2 at least temporarily reduces the temperature of incoming air, with the effect that moisture in this air condenses.
  • the condensed moisture flows off through water drain 3.
  • other drying techniques may be used, such as leading the air past or through a drying agent, but in this case the drying agent may have to be replaced regularly.
  • FIG. 2 shows an embodiment wherein condenser 2 contains a closed refrigerant circuit 20 with a compressor 22, a refrigerant evaporator 24 and a refrigerant condenser 26.
  • Refrigerant condenser 26 is placed behind refrigerant evaporator 24 in the direction of airflow through air curtain duct 15.
  • refrigerant evaporates in refrigerant evaporator 24, cooling down air flowing through air curtain duct 15. The cooling causes moisture in the air to condense and flow off through water drain 3.
  • Compressor 22 compresses the evaporated refrigerant and the compressed refrigerant is fed to refrigerant condenser 26 where the refrigerant condenses, giving of heat that is used to warm the air flowing through air curtain duct 15 after moisture has condensed.
  • the refrigeration cycle is completed when the refrigerant flows from the condenser to the evaporator and passes through an expansion organ 21.
  • FIG. 2 also shows a humidity sensor 28 coupled to compressor 22.
  • Humidity sensor 28 is located in contact with air in air curtain duct before condenser 2.
  • humidity sensor 28 controls activation of compressor 22 when the measured relative humidity of the air is above a threshold and controls deactivation of compressor 22 when the humidity is below the threshold, or a further, lower threshold.
  • humidity sensor 28 is configured so that the threshold can be set manually.
  • Humidity sensor 28 is used to deactivate condenser 2 when the humidity of the air is so low that it need not be reduced to operate the filters.
  • humidity sensor 28 can be used to control cooling strength of condenser 2 dependent on the humidity, increasing the cooling strength with increasing humidity.
  • a temperature sensor may be provided, for sensing the temperature of air flowing to the air curtain. This temperature sensor switches off the condenser when the temperature of the air exceeds a threshold. This may be used to prevent useless operation of the condenser when the air temperature is too high to condense water from the air.
  • humidity sensor 28 and closed fluid cooling circuit 20 can be used independent of one another. Closed fluid cooling circuit 20 may be used without humidity sensor 28, for example always when the cooking hood is switched on, or when compressor 22 is manually switched on. Humidity sensor 28 may be located elsewhere, for example in suction duct 10 in front of filters 1,6 or behind. Humidity sensor 28 may also be used in combination with other types of active condenser 2.
  • Condenser 2 may be an active condenser, comprising for example a Peltier element to cool the air or some other cooling arrangement.
  • Figure 3 shows a cooking hood comprising a suction duct 10 which exhausts in the outlets 16 for generating air curtain 5 and an additional exhaust 18 that does not exhaust into outlets 16.
  • An adjustable vent 4 is provided in series with external exhaust 18.
  • a grease filter 1 and a coal filter 6 is provided in front of suction duct 10 .
  • a first fan 12 and a condenser 2 are provided in suction duct 10 .
  • Condenser 2 contains a water drain 3.
  • first fan 12 causes the cooking hood to suck up air from a region over a cooking range.
  • the air is passed through condenser 2 and from there to outlets 16 for the air curtain 5 and the external exhaust 18.
  • the capacity of first fan 12 is set so that sufficient air is blown down in air curtain 5 substantially to prevent air from escaping sideways from the cooking range, but not much higher. This has the effect that the rise in temperature and absolute humidity of the air above the cooking range due to heating from the cooking range is maximized. Thus, the capacity for taking up moisture is increased.
  • Condenser 2 reduces the temperature of the air that has been sucked up, with the effect to moisture in this air condenses.
  • the condensed moisture flows off through water drain 3. Due to the increased absolute humidity rise the amount of condensed water is higher than for cooler air.
  • Adjustable vent 4 is set to release a fraction of the air that has been sucked up outside the air curtain.
  • the suction capacity is made higher than the supply of air through the air curtain. This has been found to improve the stability of the air curtain and cooking conditions.
  • the size of this fraction can be adjusted dependent on the fan speed or the amount of heat generated by the cooking range. For example, when more heat is generated the fraction may be set higher and when less heat is generated the fraction may be set lower, or the fraction may even be made zero..
  • a fixed vent may be used instead of adjustable vent 4, or an adjustable vent 4 that is set to a fixed position once upon installation of the cooking hood. This provides for less control over temperature and humidity.
  • a control loop may be provided to adjust adjustable vent 4, comprising an air humidity and temperature sensor for sensing humidity and temperature of the air over the cooking range, e.g. in duct 10, and coupled to a control organ of adjustable vent 4 so that the adjustable vent 4 is adjusted to increase the fraction with rising measured temperature.
  • a passive condenser may be used, comprising a heat exchanger to cool the air.
  • a counterflow heat exchanger is used, comprising a further duct in parallel with duct 10, but separated from duct 10 by a heat exchange surface.
  • the heat exchanger comprises a further fan, for blowing ambient air through the further duct in a flow direction opposite to the flow direction of duct 10.
  • a counterflow heat exchanger at most has the capacity to cool air to ambient temperature. Under some circumstances this may suffice to remove moisture under typical cooking conditions, provided that the air curtain is used to trap the air for some time before it is fed to the condenser.
  • the air curtain serves to trap air above the cooking range, with the effect that the temperature and humidity in the trapped air rises higher than in the case that no air curtain is used.
  • a small cooling capacity suffices to reach the condensation point.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
EP07103758A 2007-03-08 2007-03-08 Hotte de cuisson avec rideau d'air Withdrawn EP1967796A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07103758A EP1967796A1 (fr) 2007-03-08 2007-03-08 Hotte de cuisson avec rideau d'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07103758A EP1967796A1 (fr) 2007-03-08 2007-03-08 Hotte de cuisson avec rideau d'air

Publications (1)

Publication Number Publication Date
EP1967796A1 true EP1967796A1 (fr) 2008-09-10

Family

ID=38880920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103758A Withdrawn EP1967796A1 (fr) 2007-03-08 2007-03-08 Hotte de cuisson avec rideau d'air

Country Status (1)

Country Link
EP (1) EP1967796A1 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013138562A1 (fr) * 2012-03-16 2013-09-19 Illinois Tool Works Inc. Extracteur de composant en suspension dans l'air avec chemins de circulation améliorés
NL2011636C2 (en) * 2013-10-17 2015-04-20 Randolph Beleggingen B V Kitchen sensor panel and kitchen monitoring system.
EP2835591A4 (fr) * 2012-04-03 2015-12-02 Triad Inc Système de hotte présentant un rotor intégré
US9272237B2 (en) 2013-06-28 2016-03-01 Illinois Tool Works Inc. Three-phase portable airborne component extractor with rotational direction control
EP3117911A1 (fr) * 2015-07-16 2017-01-18 Illinois Tool Works, Inc. Extracteur avec système de pression positive monté à une extrémité
US9821351B2 (en) 2011-11-11 2017-11-21 Illinois Tool Works Inc. Welding fume extractor
US9839948B2 (en) 2013-01-29 2017-12-12 Illinois Tool Works Inc. Fume evacuation system
CN107477635A (zh) * 2017-08-10 2017-12-15 合肥达科环保科技有限公司 一种家庭厨房空气净化器的空气吸收箱体的加工方法
CN109373413A (zh) * 2018-12-26 2019-02-22 南京英维尔科技服务有限公司 一种防水残留吸油烟机
WO2019037492A1 (fr) * 2017-08-23 2019-02-28 上海多环油烟净化设备有限公司 Purificateur en circulation à double usage
US10242317B2 (en) 2014-11-25 2019-03-26 Illinois Tool Works Inc. System for estimating the amount and content of fumes
CN110513729A (zh) * 2019-07-29 2019-11-29 宁波方太厨具有限公司 一种嵌入式灶具及应用有该灶具的烟灶一体机
WO2020202012A1 (fr) * 2019-04-01 2020-10-08 Fisher & Paykel Appliances Limited Unité d'extracteur
US10808953B2 (en) 2013-06-28 2020-10-20 Illinois Tool Works Inc. Airborne component extractor with baffled debris collection
GB2584758A (en) * 2018-12-26 2020-12-16 Nanjing Enwell Tech Service Co Ltd Residual water prevention range hood
EP3708913A4 (fr) * 2017-11-27 2020-12-23 Zhao Yang Extracteur épurateur de fumée à faible teneur en carbone et à somme nulle et système d'épuration
US11141808B2 (en) 2011-02-01 2021-10-12 Illinois Tool Works Inc. Fume extractor for welding applications
CN113757731A (zh) * 2021-09-26 2021-12-07 浙江优格实业有限公司 一种流体隔膜负离子集成灶
WO2022120685A1 (fr) * 2020-12-10 2022-06-16 诸翔 Hotte de purification d'air à climatiseur sans unité extérieure
CN115342404A (zh) * 2022-07-26 2022-11-15 深圳市康灵盾智能厨具设备有限公司 一种多冷凝器无烟灶
US11530826B2 (en) 2015-07-16 2022-12-20 Illinois Tool Works Inc. Extractor with segmented positive pressure airflow system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010912A1 (de) * 1980-03-21 1981-10-08 Heinz Dipl.-Ing. 2000 Stapelfeld Kalbow Klimageraet fuer haushaltskuechen
DE3039246A1 (de) * 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
US4450756A (en) 1978-08-28 1984-05-29 Miguel Kling Fume exhauster device
DE10215382A1 (de) 2002-04-08 2003-10-16 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Abführen von Luft an einer Kochstelle
WO2005045323A1 (fr) * 2003-11-11 2005-05-19 Antero Heinonen Dispositif installe dans le systeme de ventilation d'un appareil menager

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450756A (en) 1978-08-28 1984-05-29 Miguel Kling Fume exhauster device
DE3010912A1 (de) * 1980-03-21 1981-10-08 Heinz Dipl.-Ing. 2000 Stapelfeld Kalbow Klimageraet fuer haushaltskuechen
DE3039246A1 (de) * 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
DE10215382A1 (de) 2002-04-08 2003-10-16 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Abführen von Luft an einer Kochstelle
WO2005045323A1 (fr) * 2003-11-11 2005-05-19 Antero Heinonen Dispositif installe dans le systeme de ventilation d'un appareil menager

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11141808B2 (en) 2011-02-01 2021-10-12 Illinois Tool Works Inc. Fume extractor for welding applications
US9821351B2 (en) 2011-11-11 2017-11-21 Illinois Tool Works Inc. Welding fume extractor
US9604266B2 (en) 2012-03-16 2017-03-28 Illinois Tool Works Inc. Airborne component extractor manifold
US9505042B2 (en) 2012-03-16 2016-11-29 Illinois Tool Works Inc. Airborne component extractor with improved power and pressure performance
US10603698B2 (en) 2012-03-16 2020-03-31 Illinois Tool Works Inc. Airborne component extractor hood
CN104271273A (zh) * 2012-03-16 2015-01-07 伊利诺斯工具制品有限公司 具有改进流道的空气承载成分抽出器
US9468958B2 (en) 2012-03-16 2016-10-18 Illinois Tool Works Inc. Airborne component extractor with adjustable flow rates
US9498805B2 (en) 2012-03-16 2016-11-22 Illinois Tool Works Inc. Airborne component extractor with improved flow paths
US9505041B2 (en) 2012-03-16 2016-11-29 Illinois Tool Works Inc. Optimized airborne component extractor
WO2013138562A1 (fr) * 2012-03-16 2013-09-19 Illinois Tool Works Inc. Extracteur de composant en suspension dans l'air avec chemins de circulation améliorés
EP2835591A4 (fr) * 2012-04-03 2015-12-02 Triad Inc Système de hotte présentant un rotor intégré
US11376642B2 (en) 2013-01-29 2022-07-05 Illinois Tool Works Inc. Fume evacuation system
US9839948B2 (en) 2013-01-29 2017-12-12 Illinois Tool Works Inc. Fume evacuation system
US9272237B2 (en) 2013-06-28 2016-03-01 Illinois Tool Works Inc. Three-phase portable airborne component extractor with rotational direction control
US10808953B2 (en) 2013-06-28 2020-10-20 Illinois Tool Works Inc. Airborne component extractor with baffled debris collection
NL2011636C2 (en) * 2013-10-17 2015-04-20 Randolph Beleggingen B V Kitchen sensor panel and kitchen monitoring system.
WO2015057073A1 (fr) * 2013-10-17 2015-04-23 Randolph Beleggingen B.V. Panneau de capteur de cuisine et système de surveillance de cuisine
US10242317B2 (en) 2014-11-25 2019-03-26 Illinois Tool Works Inc. System for estimating the amount and content of fumes
US11530826B2 (en) 2015-07-16 2022-12-20 Illinois Tool Works Inc. Extractor with segmented positive pressure airflow system
EP3117911A1 (fr) * 2015-07-16 2017-01-18 Illinois Tool Works, Inc. Extracteur avec système de pression positive monté à une extrémité
CN106345786A (zh) * 2015-07-16 2017-01-25 伊利诺斯工具制品有限公司 具有端部安装的正压系统的抽出器
US11014132B2 (en) 2015-07-16 2021-05-25 Illinois Tool Works Inc. Extractor with end-mounted positive pressure system
CN107477635A (zh) * 2017-08-10 2017-12-15 合肥达科环保科技有限公司 一种家庭厨房空气净化器的空气吸收箱体的加工方法
WO2019037492A1 (fr) * 2017-08-23 2019-02-28 上海多环油烟净化设备有限公司 Purificateur en circulation à double usage
EP3708913A4 (fr) * 2017-11-27 2020-12-23 Zhao Yang Extracteur épurateur de fumée à faible teneur en carbone et à somme nulle et système d'épuration
US11460196B2 (en) 2017-11-27 2022-10-04 Zhongshan Calculus Science And Technology Ltd Low-carbon self-balance cooking fume purifier
CN109373413B (zh) * 2018-12-26 2020-08-07 南京英维尔科技服务有限公司 一种防水残留吸油烟机
GB2584758A (en) * 2018-12-26 2020-12-16 Nanjing Enwell Tech Service Co Ltd Residual water prevention range hood
GB2584758B (en) * 2018-12-26 2021-07-07 Nanjing Enwell Tech Service Co Ltd A range hood for removing residual water
WO2020133918A1 (fr) * 2018-12-26 2020-07-02 李桂玉 Hotte de cuisine à prévention d'eau résiduelle
CN109373413A (zh) * 2018-12-26 2019-02-22 南京英维尔科技服务有限公司 一种防水残留吸油烟机
WO2020202012A1 (fr) * 2019-04-01 2020-10-08 Fisher & Paykel Appliances Limited Unité d'extracteur
CN110513729A (zh) * 2019-07-29 2019-11-29 宁波方太厨具有限公司 一种嵌入式灶具及应用有该灶具的烟灶一体机
WO2022120685A1 (fr) * 2020-12-10 2022-06-16 诸翔 Hotte de purification d'air à climatiseur sans unité extérieure
CN113757731A (zh) * 2021-09-26 2021-12-07 浙江优格实业有限公司 一种流体隔膜负离子集成灶
CN115342404A (zh) * 2022-07-26 2022-11-15 深圳市康灵盾智能厨具设备有限公司 一种多冷凝器无烟灶

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