EP1258687B1 - Hotte d'aspiration et procédé de commande d'un système d'aspiration - Google Patents
Hotte d'aspiration et procédé de commande d'un système d'aspiration Download PDFInfo
- Publication number
- EP1258687B1 EP1258687B1 EP02291119A EP02291119A EP1258687B1 EP 1258687 B1 EP1258687 B1 EP 1258687B1 EP 02291119 A EP02291119 A EP 02291119A EP 02291119 A EP02291119 A EP 02291119A EP 1258687 B1 EP1258687 B1 EP 1258687B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- suction
- extraction
- hood
- control
- 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 - Lifetime
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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
- F24C15/2021—Arrangement or mounting of control or safety systems
Definitions
- the present invention relates to a fume hood and a method control of a suction system.
- these extraction hoods are equipped with means for controlling the operation of the suction means, allowing in particular to automatically trigger the operation of the means suction during the presence of cooking fumes.
- optical sensors are thus sensitive to density and opacity cooking smoke.
- cooking fumes consist of different types of chemical compounds, including fatty steam, water vapor and fumes.
- Humidity sensors or oily vapor sensors can so be used to detect the presence of smoke and control the triggering of a suction system.
- suction hood as described in DE 25 18 750, in which temperature sensors are placed on the smoke path and outside the hood in order to detect a rise in temperature signifying the presence of fumes and controlling the triggering of the suction fan.
- the present invention aims to improve the previous devices and to propose a fume hood and a control method of a system suction device for controlling the operation of the system in an economical and particularly efficient way.
- the present invention aims, in a first aspect, a fume extraction hood with suction means cooking fumes, means for controlling the operation of the suction means, temperature measuring means arranged substantially along the path of the cooking fumes and calculating means a temperature difference between said measured temperature and a temperature reference.
- control means are adapted to modify the operation of the suction means according to a value of control equal to the difference between the temperature difference and a value of setpoint.
- the suction hood according to the invention thus makes it possible to exploit heating of the air at the level of the suction system, linked in particular to the temperature rise of the fumes from the hob, to regulate the operation of the suction means.
- These temperature measuring means are in particular insensitive to the different types of chemical compounds that emanate from the cooking.
- the rise in temperature is indeed representative of the density in the air of chemical compounds emanating from cooking.
- the suction hood comprises means for measuring an ambient temperature arranged in out of the path of the cooking fumes and adapted to measure the reference temperature.
- the reference temperature corresponds to the temperature ambient outside the extractor hood.
- the means for measuring an ambient temperature are arranged in an area where the measurement will not be disturbed by cooking.
- This measurement of an ambient temperature makes it possible to provide a reference temperature and to overcome significant variations in temperature that may exist in the environment of the fume hood.
- the present invention also aims, in a second aspect, a method of controlling a fume extraction system of cooking.
- This regulation of the suction flow makes it possible to reach a point of optimum operation for the suction system corresponding to a stabilization of the temperature difference measured at a set point.
- such a suction hood 10 is intended to be placed above a cooking plane P in order to suck and evacuate the fumes from the cooking of food on the plane of cooking P.
- This suction hood 10 comprises in known manner means suction of cooking fumes 11.
- these suction means consist of a fan 11 associated with a motor 12 for sucking in continuous cooking fumes inside an exhaust duct 13.
- a control device 20 which will be described later, allows to control the operation of the suction means, in particular the operation of the motor 12 for driving the fan 11.
- this suction hood comprises temperature measuring means 14 or 14 'which are arranged substantially on the path of the cooking fumes.
- These temperature measuring means are arranged for example in the center of the hood 10, directly in the axis of the exhaust duct 13.
- a temperature sensor 14 is placed in the center of the lower plane 15 of the hood, behind a grid 16 and a filter (not shown)
- This temperature sensor 14 may for example be a NTC thermistor (Negative Temperature Coefficient thermistor).
- the sensor of temperature 14 'could also be disposed outside the hood 10 on frame 17 thereof near the passage of cooking fumes.
- the suction hood comprises also means for measuring an ambient temperature 18 which are also here formed for example a temperature sensor of the type NTC thermistor.
- This ambient temperature sensor 18 is disposed outside the path of the cooking fumes and makes it possible to measure a temperature of reference, here equal to the ambient temperature, independent of the presence or no cooking fumes.
- This ambient temperature sensor 18 can be attached to the outside of the hood, on the roof 19 thereof.
- the control device 20 of the operation of the hood comprises in particular control means 21 themselves, for controlling the operation of the fan 11 via its motor 12.
- calculation means 22 adapted to calculate a temperature difference ⁇ T between the measured temperature T 1 and the reference temperature T A , here equal to the ambient temperature.
- a comparator 23 is furthermore suitable for comparing the difference ⁇ T with a reference value ⁇ T c .
- the control means 21 effecting the servocontrol of the suction flow may consist of a known regulating device such as a proportional, integral proportional or proportional integral proportional regulator or a fuzzy corrector, making it possible to obtain and maintain the value of the temperature difference ⁇ T at the setpoint value ⁇ T c or approach it.
- the suction means preferably comprise a fan 11 controlled in continuous variation of the suction flow.
- variable amplitude motor 12 of the fan 11 For example, a voltage of variable amplitude motor 12 of the fan 11.
- this control method is implemented in a hood as described with reference to FIGS. 1 and 2.
- This control method firstly comprises a step of measuring the temperature T 1 of the cooking fumes near the suction system.
- This measurement is performed by the temperature sensor 14 which is arranged on the path of the cooking fumes.
- a step of obtaining a reference temperature T A is also implemented.
- this step of obtaining a reference temperature is carried out by measuring the ambient temperature T A at the ambient temperature sensor 18.
- a reference temperature could be prefixed and stored in the control device 20, corresponding to a average room temperature.
- a comparison step then makes it possible to compare the temperature difference ⁇ T with a reference value ⁇ T c at the comparator 23.
- this reference value ⁇ T c can be between 1 and 5 ° C, and is preferably equal to 2-3 ° C.
- the control method then comprises a step of regulating the flow sucked by the fan 11 according to this control value ⁇ ( ⁇ ).
- This control value ⁇ ( ⁇ ) decreasing, the flow sucked by the fan 11 also decreases until stabilization at a point of operation directly related to the temperature of the cooking fumes, and thus the density of fumes and vapors in the air.
- control method thus makes it possible to regulate the suction system to a Optimum operating point when cooking is under the hood suction.
- control method comprises a step of automatically stopping the suction system when the temperature difference ⁇ T is strictly less than the set value ⁇ T c .
- the temperature sensor 14 is no longer in contact with the flow sucked from the cooking fumes so that the measured temperature value T 1 is substantially equal to the ambient temperature T A.
- This method of controlling a suction system allows thus, in addition to the automatic triggering of the suction system, the maintenance in operation of it at an optimal point.
- control means could be set manual operation by the user, and be adapted only to regulate the flow sucked by the suction means according to the control value ⁇ ( ⁇ ).
- temperature sensors could be arranged simultaneously in different parts of the smoke path of cooking to provide an average value of the temperature of these fumes from cooking.
Landscapes
- Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
- mesure de la température des fumées de cuisson à proximité du système d'aspiration ;
- obtention d'une température de référence ;
- calcul d'un écart de température égale à la différence entre la température mesurée et la température de référence ; et
- régulation du flux aspiré par le système d'aspiration en fonction d'une valeur de commande égale à la différence entre l'écart de température et la température de consigne.
- la figure 1 est une vue en perspective tronquée d'une hotte d'aspiration conforme à un mode de réalisation de l'invention ;
- la figure 2 est une vue schématique illustrant le fonctionnement d'une hotte d'aspiration conforme à l'invention associée à un plan de cuisson ; et
- les figures 3 et 4 sont des vues de profil d'une hotte d'aspiration conforme à l'invention associée à un plan de cuisson et illustrant différents parcours des fumées de cuisson dans la hotte d'aspiration.
- à déclencher le fonctionnement des moyens d'aspiration 11, 12 lorsque l'écart de température ΔT est supérieur ou égal à la valeur de consigne ΔTc ;
- à réguler le flux aspiré par les moyens d'aspiration 11, 12 en fonction d'une valeur de commande ε(Δ) égale à la différence entre l'écart de température ΔT et la valeur de consigne ΔTc ; et
- arrêter le fonctionnement des moyens d'aspiration 11, 12 lorsque l'écart de température ΔT est strictement inférieur à la valeur de consigne ΔTc .
Claims (9)
- Hotte d'aspiration des fumées de cuisson comportant des moyens d'aspiration (11, 12) des fumées de cuisson, des moyens de commande (21) du fonctionnement des moyens d'aspiration (11, 12), des moyens de mesure (14 ; 14') de température (T1) disposés sensiblement sur le parcours des fumées de cuisson et des moyens de calcul (22) d'un écart de température (ΔT) entre ladite température mesurée (T1) et une température de référence (TA), caractérisée en ce que les moyens de commande (21) sont adaptés à modifier le fonctionnement des moyens d'aspiration (11, 12) en fonction d'une valeur de commande (ε(Δ)) égale à la différence entre l'écart de température (ΔT) et une valeur de consigne (ΔTc ).
- Hotte d'aspiration conforme à la revendication 1, caractérisée en ce qu'elle comporte des moyens de mesure (18) d'une température ambiante (TA) disposés en dehors du parcours des fumées de cuisson et adaptés à mesurer ladite température de référence (TA).
- Hotte d'aspiration conforme à l'une des revendications 1 ou 2, caractérisée en ce que lesdits moyens de commande (21) sont adaptés à déclencher le fonctionnement des moyens d'aspiration (11, 12) lorsque ledit écart de température (ΔT) est supérieur ou égal à une valeur de consigne (ΔTc ).
- Hotte d'aspiration conforme à l'une des revendications 1 à 3, caractérisée en ce que lesdits moyens de commande (21) sont adaptés à réguler le flux aspiré par les moyens d'aspiration (11, 12).
- Hotte d'aspiration conforme à l'une des revendications 1 à 4, caractérisée en ce que les moyens de mesure (14 ; 14') de température (T1) sont disposés dans le plan inférieur (15) de la hotte (10).
- Hotte d'aspiration conforme à l'une des revendications 1 à 5, caractérisée en ce que les moyens d'aspiration (11, 12) comprennent un ventilateur (11, 12) commandé en variation continue du flux d'aspiration.
- Procédé de commande d'un système d'aspiration (11, 12) des fumées de cuisson, caractérisé en ce qu'il comporte les étapes suivantes :mesure de la température (T1) des fumées de cuisson ;obtention d'une température de référence (TA) ;calcul d'un écart de température (ΔT) égal à la différence entre la température mesurée (T1) et la température de référence (TA) ; etrégulation du flux aspiré par le système d'aspiration (11, 12) en fonction d'une valeur de commande (ε(Δ)) égale à la différence entre l'écart de température (ΔT) et une valeur de consigne (ΔTc ).
- Procédé de commande conforme à la revendication 7, caractérisé en ce qu'il comporte les étapes suivantes :comparaison dudit écart de température (ΔT) et de la valeur de consigne (ΔTc );mise en fonctionnement du système d'aspiration (11, 12) lorsque ledit écart de température (ΔT) est supérieur ou égal à la valeur de consigne (ΔTc ).
- Procédé de commande conforme à l'une des revendications 7 ou 8, caractérisé en ce qu'il comporte une étape d'arrêt automatique du système d'aspiration (11, 12) lorsque ledit écart de température (ΔT) est strictement inférieur à la valeur de consigne (ΔTc ).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60202550T DE60202550T3 (de) | 2001-05-17 | 2002-05-03 | Abzugshaube und Steuerverfahren für ein Abzugsystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0106522A FR2824894B1 (fr) | 2001-05-17 | 2001-05-17 | Hotte d'aspiration et procede de commande d'un systeme d'aspiration |
FR0106522 | 2001-05-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1258687A1 EP1258687A1 (fr) | 2002-11-20 |
EP1258687B1 true EP1258687B1 (fr) | 2005-01-12 |
EP1258687B2 EP1258687B2 (fr) | 2011-11-16 |
Family
ID=8863397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02291119A Expired - Lifetime EP1258687B2 (fr) | 2001-05-17 | 2002-05-03 | Hotte d'aspiration et procédé de commande d'un système d'aspiration |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1258687B2 (fr) |
DE (1) | DE60202550T3 (fr) |
ES (1) | ES2236456T5 (fr) |
FR (1) | FR2824894B1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100565253B1 (ko) * | 2004-08-16 | 2006-03-30 | 엘지전자 주식회사 | 레인지용 후드 |
FI117878B3 (fi) * | 2006-01-20 | 2019-01-31 | Innohome Oy | Lieden tai liesituulettimen hälytyslaite |
DE102011088079A1 (de) * | 2011-12-09 | 2013-06-13 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugshaube, Küchenmöbel und Anordnung |
CN110529903A (zh) * | 2019-09-19 | 2019-12-03 | 珠海格力电器股份有限公司 | 一种吸油烟机及其控制方法、止回阀组件 |
CN113357675B (zh) * | 2020-03-02 | 2022-08-12 | 宁波方太厨具有限公司 | 吸油烟机电机及叶轮保养预估方法及楼宇集中式排烟系统 |
EP4293288A1 (fr) * | 2022-06-15 | 2023-12-20 | Arçelik Anonim Sirketi | Hotte aspirante à fonctionnement automatique |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2518750B2 (de) * | 1975-04-26 | 1979-06-28 | E.G.O. Regeltechnik Gmbh, 7519 Oberderdingen | Dunstabzugshaube über Kochherden o.dgl |
DE3922090A1 (de) * | 1989-07-05 | 1991-01-17 | Ruhrgas Ag | Dunstabzugshaube fuer kochherde |
-
2001
- 2001-05-17 FR FR0106522A patent/FR2824894B1/fr not_active Expired - Fee Related
-
2002
- 2002-05-03 EP EP02291119A patent/EP1258687B2/fr not_active Expired - Lifetime
- 2002-05-03 ES ES02291119T patent/ES2236456T5/es not_active Expired - Lifetime
- 2002-05-03 DE DE60202550T patent/DE60202550T3/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60202550D1 (de) | 2005-02-17 |
FR2824894B1 (fr) | 2004-01-16 |
FR2824894A1 (fr) | 2002-11-22 |
DE60202550T3 (de) | 2012-05-24 |
EP1258687B2 (fr) | 2011-11-16 |
ES2236456T5 (es) | 2012-02-20 |
DE60202550T2 (de) | 2006-02-16 |
ES2236456T3 (es) | 2005-07-16 |
EP1258687A1 (fr) | 2002-11-20 |
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