EP4490439A1 - Procédé de commande d'un dispositif d'extraction de fumées - Google Patents

Procédé de commande d'un dispositif d'extraction de fumées

Info

Publication number
EP4490439A1
EP4490439A1 EP23710308.0A EP23710308A EP4490439A1 EP 4490439 A1 EP4490439 A1 EP 4490439A1 EP 23710308 A EP23710308 A EP 23710308A EP 4490439 A1 EP4490439 A1 EP 4490439A1
Authority
EP
European Patent Office
Prior art keywords
noise level
extractor
extractor device
control
fan
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
EP23710308.0A
Other languages
German (de)
English (en)
Inventor
Jens Herbst
Benedikt Hofmann
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4490439A1 publication Critical patent/EP4490439A1/fr
Pending legal-status Critical Current

Links

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 method for controlling an extractor device.
  • fans which can also be referred to as fans, are used to suck the air from a hob or worktop into the extractor device and clean it there.
  • the extractor fan usually has an electrically commutated motor (EC motor) that drives the fan wheel.
  • EC motor electrically commutated motor
  • These motors can be regulated in a simple manner due to the electronic commutation or the regulation can be adjusted in a simple manner.
  • the torque-speed characteristic curve and thus also the delivery volume-pressure difference characteristic curve can be specifically selected and the motor can be controlled accordingly.
  • characteristics that have already been recorded for condensation motors are used or modeled on them.
  • a disadvantage of the previous approach is that the controller reacts, for example, to an increasing back pressure by increasing the speed, without taking effects that are important for the user into account.
  • the object of the present invention is therefore to create a solution by means of which the disadvantages of the prior art can at least be reduced.
  • the present invention is based on the knowledge that this problem can be solved by controlling the fan using a control that was generated depending on at least one user-relevant effect.
  • the present invention therefore relates to a method for controlling an extractor device which comprises at least one fan with a motor.
  • the method is characterized in that the fan motor is controlled with a regulation in which a predetermined noise level is taken into account.
  • the fan motor is preferably an EC motor.
  • the noise level refers in particular to the noise level that is emitted by the extractor device when the extractor device is in operation and which is therefore perceived by the user.
  • the noise level can also be referred to as noise level or sum level.
  • the noise level is usually composed of a portion that is generated by the operation of the engine and vibrations, which can also be referred to as source total noise, and a portion that is generated by the air flow.
  • the noise level is influenced by a number of influences.
  • the noise level is influenced, for example, by the installation situation of the fan in the extractor hood device and the installation situation of the extractor hood device in the room in which it is operated.
  • the installation situation is influenced, for example, by the piping, in particular its cross section and/or length. Particularly with pipes of smaller diameter, the back pressure that the fan has to overcome is increased.
  • the noise level is influenced by the operating mode of the extractor hood.
  • the noise level is generally higher in an extractor device that is operated in recirculation mode (recirculation hood) than in an extractor hood that is operated in exhaust mode (exhaust hood).
  • Air circulation hoods usually use odor filters through which air has to flow, thereby increasing the counter pressure that the fan has to overcome.
  • the extractor hood can be operated in such a way that the annoyance to the extractor hood caused by the operation of the extractor hood can be minimized.
  • the control takes place using a control curve in which a constant noise level is generated at all operating points. This can further reduce the annoyance of the user.
  • the predetermined noise level represents a value or a range.
  • the predetermined noise level is independent of the installation situation of the extractor device and/or the installation situation of the fan in the extractor device.
  • the fan motor can, for example, be controlled so that it is operated at a lower speed.
  • a circulating hood can be controlled so that it emits a lower noise level. In this case, a lower efficiency of the recirculation hood may be achieved than in the case in which the recirculation hood is operated without taking the noise level into account.
  • control curve is determined from a pressure-delivery volume curve, taking into account the sound pressure values of the delivery volumes.
  • the speed of the motor represents the reference variable of the control.
  • the noise level can be reduced.
  • the predetermined noise level can be adjusted by the user of the extractor device.
  • the adjustment can be made on the extractor device, for example by selecting a noise level.
  • the control of the extractor device will be selected by the user depending on a predetermined noise level. This allows the user to decide whether the extractor device is operated with or without such a control. This embodiment is advantageous because the user is free to decide whether a constant noise level is currently set or whether the extractor device should be operated with increased efficiency, possibly accompanied by an increased noise level.
  • the invention relates to an extractor device with at least one fan with a motor and a control unit.
  • the extractor device is characterized in that the extractor device is designed to carry out the method according to the invention.
  • At least one control curve for constant noise operation of the extractor device is stored in the control unit of the extractor device. If several control curves are stored, each control curve can be a control curve for a different specified noise level.
  • the extractor device has at least one control element via which the control can be selected depending on a predetermined noise level and/or the predetermined noise level.
  • Figure 1 a schematic block representation of an embodiment of the extractor device according to the invention.
  • Figures 2 to 5 a schematic representation of measurement results of the operation of extractor devices according to the method according to the invention.
  • the method according to the invention can be carried out, for example, with an extractor device 1 shown in FIG.
  • the extractor device 1 represents an extractor hood
  • Extractor hood device 1 arranged in an environment close to the hob, in particular above a hob 12.
  • the extractor device 1 comprises a control unit 3 and a fan 2.
  • the fan 2 comprises a motor (not shown) for driving a fan wheel of the fan 2 (not shown).
  • the motor is preferably an EC motor.
  • the control unit 3 is shown separately from the fan 2 in the embodiment shown. Alternatively, the control unit 3 can also be integrated in the fan 2 and, for example, integrated in the motor control of the motor of the fan 2.
  • the extractor device 1 in the illustrated embodiment includes a storage unit 4, which is connected to the control unit 3. One or more control curves can be stored in the storage unit 4.
  • the extractor device 1 in the embodiment shown has an operating unit 5, via which, for example, user input can be made and transmitted to the control unit 3.
  • the fan 2 is arranged in the extractor device 1.
  • the air is sucked into the fan 2 from the suction opening 60.
  • An air duct 6 is connected to the top of the fan 2.
  • the upper end of the air duct 6 protrudes beyond the top of the extractor device 1.
  • a pipe (not shown) can be arranged at the air outlet 61 provided in the upper end of the air duct 6.
  • the control unit 3 is set up to control the blower motor 2 according to a control curve stored in the memory unit 3.
  • FIGS. 2 to 5 Measurement results of an embodiment of the method according to the invention are shown in FIGS. 2 to 5.
  • the three curves of each of the figures can have been measured with different extractor devices, with the same extractor device with different installation situations or with the same extractor device with different selected predetermined noise levels.
  • the upper curve represents the embodiment in which there is a higher noise level than in the lower two curves.
  • the noise pressure level is plotted against the volume flow.
  • the noise pressure level can also be referred to as the noise level and is preferably given in decibels (dB, especially dB(A)).
  • the volume flow can also be referred to as the delivery volume flow and is preferably given in cubic meters per hour (m 3 /h).
  • the upper curve of Figure 1 shows that a higher noise level is achieved than in the two lower curves.
  • the noise level is constant in each of the curves even with different volume flows.
  • Static pressure is plotted against the volume flow.
  • Static pressure can also be referred to as back pressure and is preferably given in Pascals (PA).
  • the speed is plotted against the volume flow.
  • the speed represents the speed of the motor and is preferably given in revolutions per minute (rpm).
  • Efficiency is plotted against the volume flow. Efficiency can also be referred to as static efficiency and is preferably expressed as a percentage (%).
  • a fan control curve can be used so that the fan noise reaches a constant total level at all operating points, for example at all possible piping, in exhaust mode, in recirculation mode and the like.
  • the data can be obtained from tests on noise characteristics and the corresponding control curves can be derived from this.
  • the control curve can also be referred to as the operating curve or operating line.
  • noise-constant control curves in particular noise-constant fan operating lines, can enable the user to have an operating behavior that is clearly determined for one of the output variables, in particular a total source noise of the fan. This is made possible without the user having to carry out a secondary evaluation of operating data.
  • the motor can be controlled specifically, it can be switched through different curves in a kitchen studio, for example, in order to adapt the noise to the exhibition space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Ventilation (AREA)

Abstract

La présente invention concerne un procédé de commande d'un dispositif d'extraction de fumées comprenant au moins un ventilateur à moteur, caractérisé par le fait que le moteur du ventilateur est commandé par un régulateur dans lequel un niveau de bruit prédéterminé est pris en compte. L'invention concerne également un dispositif d'extraction de fumées.
EP23710308.0A 2022-03-09 2023-03-08 Procédé de commande d'un dispositif d'extraction de fumées Pending EP4490439A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022202328.5A DE102022202328A1 (de) 2022-03-09 2022-03-09 Verfahren zur Steuerung einer Dunstabzugsvorrichtung
PCT/EP2023/055873 WO2023170136A1 (fr) 2022-03-09 2023-03-08 Procédé de commande d'un dispositif d'extraction de fumées

Publications (1)

Publication Number Publication Date
EP4490439A1 true EP4490439A1 (fr) 2025-01-15

Family

ID=85569766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23710308.0A Pending EP4490439A1 (fr) 2022-03-09 2023-03-08 Procédé de commande d'un dispositif d'extraction de fumées

Country Status (4)

Country Link
EP (1) EP4490439A1 (fr)
CN (1) CN118974483A (fr)
DE (1) DE102022202328A1 (fr)
WO (1) WO2023170136A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023213240A1 (de) * 2023-12-21 2025-06-26 BSH Hausgeräte GmbH Verfahren und Computerprogramm zur Einstellung einer Steuerung einer Dunstabzugsvorrichtung und Dunstabzugsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045137A1 (de) * 2005-09-22 2007-04-05 Minebea Co., Ltd., Kitasaku Lüftereinheit mit einer vorgegebenen künstlichen Kennlinie und Verfahren zu dessen Betrieb
EP2839219B1 (fr) * 2012-04-17 2018-07-04 Whirlpool EMEA S.p.A Hotte et procédé pour son exploitation
ITTO20120343A1 (it) * 2012-04-17 2013-10-18 Indesit Co Spa Cappa comprendente un'unità di supervisione capace di associare per un tipo di cottura selezionata una portata d'aria
DE102013204141A1 (de) * 2013-03-11 2014-09-11 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugshaube

Also Published As

Publication number Publication date
DE102022202328A1 (de) 2023-09-14
CN118974483A (zh) 2024-11-15
WO2023170136A1 (fr) 2023-09-14

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