EP4276363A1 - Hotte d'aspiration à performance de fonctionnement automatique améliorée - Google Patents

Hotte d'aspiration à performance de fonctionnement automatique améliorée Download PDF

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Publication number
EP4276363A1
EP4276363A1 EP23165387.4A EP23165387A EP4276363A1 EP 4276363 A1 EP4276363 A1 EP 4276363A1 EP 23165387 A EP23165387 A EP 23165387A EP 4276363 A1 EP4276363 A1 EP 4276363A1
Authority
EP
European Patent Office
Prior art keywords
exhaust hood
temperature
cooking
temperature sensors
sensors
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
EP23165387.4A
Other languages
German (de)
English (en)
Inventor
Hakan ALTUNTAS
Arda DONERKAYALI
Tulay GUNDOGMU
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP4276363A1 publication Critical patent/EP4276363A1/fr
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
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the present invention relates to an exhaust hood wherein the sensors are efficiently positioned to increase the automatic operation performance.
  • the exhaust hood provides the discharge of the water vapor and odor generated during the cooking process to the outside environment.
  • the exhaust hood generally comprises a suction motor, a suction channel and a suction surface.
  • the exhaust hood can be operated at different levels depending on the motor power in order to provide the discharge of the water vapor and odor generated during the cooking process to the outside environment. Said different levels can be selected by the user at appropriate stages according to the load of the cooking process.
  • the user operates the exhaust hood when required during the cooking process and selects the appropriate level.
  • the exhaust hood is operated automatically to increase user comfort and to determine the most accurate level.
  • sensors which monitor changes such as odor and temperature are used.
  • One of at least two temperature sensors on the exhaust hood measures the ambient temperature while the other temperature sensor detects whether the cooking device is operational or not from the temperature changes caused by the cooking process. By using at least two temperature sensors, it can be determined whether the cooker under the exhaust hood is operational or not, from the relative change (differences) between the temperature information measured by said sensors. Accordingly, it is provided that the exhaust hood is activated, the level is increased, and when the thermal load disappears, the level is reduced and the exhaust hood is closed.
  • the sensor placed anywhere under the exhaust hood can measure the cooker load temperature when the exhaust hood is not operational.
  • the sensor can also enable the exhaust hood to automatically switch to the first level at the specified stage.
  • the air flow path changes direction towards the ventilation channel due to the suction. From this moment on, if the sensor is not placed in a correct position, in an area suitable for the air flow path, the cooker does not switch to the next level although the same continues to operate. Since the hot air is drawn by the exhaust hood at this time, the sensor remains out of the air flow path and starts to cool down even if the cooker is operational, transmitting incorrect information to the exhaust hood and causing the same to stop.
  • the cooking zones can be located at different positions.
  • the thermal load which occurs during the cooking process in the cooking zones at these different positions follows a different flow path.
  • the sensor which is placed in any position under the exhaust hood, may remain within the air flow path of some cooking zones, while remaining outside the air flow path of some cooking zones.
  • the sensor cannot complete the detection process for the automatic operation of the exhaust hood or may make an incorrect detection.
  • the sensor In order for the exhaust hood to perform the automatic operation function correctly, the sensor must be within the air flow path when the exhaust hood is operational or not, at every level and in every mode, in every type of cooker and in every cooking zone. To meet this condition, it is not sufficient to use only one sensor other than the reference sensor which monitors the ambient temperature. It is necessary to use more than one temperature sensor in order to correctly detect the temperature released by following more than one air flow path from different cooking zones in cooking devices which may have various designs.
  • German Patent Application No. DE102006041581 an exhaust hood which is prevented from overheating and a control method are disclosed.
  • a smart exhaust hood comprising a control device is disclosed.
  • two negative temperature coefficient thermistors are used as sensors.
  • the thermistors are mounted directly onto the lower corners of the exhaust hood.
  • an exhaust hood comprising a temperature sensor placed on the outer surface thereof and measuring the ambient temperature and at least two temperature sensors placed on the suction surface, wherein the fan is controlled according to temperature difference based on the information received from the sensors.
  • an exhaust hood which is positioned above cooking devices such as cooker, oven, etc., comprising a body; a suction pipe; a fan which enables the air to be sucked and discharged to the outer environment; a guiding plate which is disposed on the lower surface of the body; an air suction duct; and one or more than one temperature sensor which measures the temperature of the air rising from the cooking device by heating up.
  • This document also discloses the temperature sensor which is mounted at the center of the air suction duct between the guiding plate and the front panel, which is positioned in the flow path of the air, and which is enabled to be affected from the air flow at maximum. Thus, incorrect measurement is prevented while the temperature sensor performs its automatic operating functions.
  • the detection sensitivity decreases and the transitions between the fan revolutions cannot be correctly realized.
  • the sensors which read the static air temperature remain out of the hot air flow path which occurs when the cooking process is started, or when the level of the exhaust hood is changed, the operation of the suction motor at different powers causes the air flow path to change. Therefore, erroneous readings and detections occur since the hot air does not reach the sensor sufficiently.
  • the aim of the present invention is the realization of an exhaust hood wherein the sensors are efficiently positioned to increase the automatic operation performance.
  • the exhaust hood realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims, comprises at least one first temperature sensor which detects the ambient temperature; at least two second temperature sensors which detect the temperature of the air rising from a cooking device such as countertop cooker, oven, etc. or a cooking vessel thereon and which are disposed on the flow path of the air sucked; and a control unit which enables the exhaust hood to automatically operate according to the information received from the first and second temperature sensors and which also enables the operation level to be automatically adjusted; and the second temperature sensors are electrically connected in parallel.
  • NTC (negative temperature coefficient) sensors are used as the second temperature sensor.
  • the second temperature sensors are electrically connected to each other in parallel, thus allowing measurements to be taken from a single microprocessor ADC port.
  • the exhaust hood is enabled to operate automatically with at least two second temperature sensors, the second temperature sensors are placed in the most effective way to detect the temperature of the cooking device load which enables the automatic operation thereof while providing solutions to the detection problems which arise in the state of the art.
  • the exhaust hood is enabled to automatically determine the operational level of the suction motor, depending on the cooking load, by means of electrically-connected temperature sensors.
  • the present invention in case of heating in any of the temperature sensor measuring the ambient temperature and the temperature sensors which are connected in parallel to a single microprocessor port and placed on the air flow paths between the cooking device and the exhaust hood suction motor, in different types of cookers, at different power and levels, at different exhaust hood levels, with different cooking vessels and placements, it is provided that
  • the exhaust hood (1) of the present invention is positioned above cooking devices (8) such as cookers, countertop cookers and ovens so as to provide the removal of odor, smoke and moisture which occur during the cooking process, and comprises a body (2); a suction channel (3) which is provided in the body (2); at least one fan (4) which is provided in the suction channel (3); at least one first temperature sensor (5) which is provided on the exhaust hood (1) and which detects the ambient temperature; at least two second temperature sensors (6) which detect the temperature of the air rising from the cooking device (8) or the cooking vessel thereon and which are disposed on the flow path of the air sucked into the suction channel (3); and a control unit (7) which enables the exhaust hood (1) to automatically operate according to the information received from the first and second temperature sensors (5 and 6) and which also enables the operation level to be automatically adjusted, and the second temperature sensors (6) are electrically connected in parallel.
  • the load on the microprocessor caused by using more than one second temperature sensor (6) which detects the load of the cooking device (8) is minimize
  • the exhaust hood (1) is automatically activated by the control unit (7) according to a relative difference between the load temperature of the cooking device (8) and the ambient temperature. According to the amount of this relative difference, the fan (4) operational levels are automatically adjusted by the control unit (7), and when the relative difference disappears, the end of the cooking process is detected and the operation of the exhaust hood (1) ends.
  • the fan (4) is operated by the control unit (7) so as to perform a low amount of suction and the air is directed towards the second temperature sensors (6) on the air flow path.
  • the increase in the load of the cooking device (8) is easily detected and the levels of the exhaust hood (1) are automatically changed by the control unit (7).
  • the automatic mode is activated by the control unit (7) while the exhaust hood (1) is not operation, if the measured cooking device (8) load temperature is higher than the ambient temperature, it is detected that a cooking process is being carried out and the exhaust hood (1) is operated directly at the relevant level by the control unit (7).
  • the second temperature sensors (6) are disposed into the suction channel (3).
  • the cooking device (8) load temperature can be determined in the most efficient manner depending on the cooking process. The most accurate detection of the temperature of the cooking device (8) enables the exhaust hood (1) to be activated automatically at the right time.
  • NTC (negative temperature coefficient) sensors are used as the second temperature sensor (6).
  • NTC sensors have a characteristic of decreasing resistance as temperature increases.
  • the second temperature sensors (6) are placed in a position suitable for the air flow path, in case of heating in any one, the cooking process is detected to be performed on any cooking zone of the cooking device (8) while the load of this cooking process is also determined.
  • the exhaust hood (1) is enabled to operate automatically with at least two second temperature sensors (6), the second temperature sensors (6) are placed in the most effective way to detect the temperature of the cooking device (8) load which enables the automatic operation thereof while providing solutions to the detection problems which arise in the state of the art.
  • the exhaust hood (1) comprises the second temperature sensors (6) which are placed on the air flow path, between the front panel of the exhaust hood (1) and the suction duct (3), preferably at the most heated positions during the cooking process.
  • the second temperature sensors (6) are placed on the back of the front panel so as to face the cooking device (8).
  • the first temperature sensor (5) which measures the ambient temperature, is preferably placed in a position at the upper parts of the exhaust hood (1) so as not to be directly affected by the temperature of the cooking device (8).
  • the exhaust hood (1) is enabled to automatically determine the operational level of the suction motor, depending on the cooking load, by means of electrically-connected second temperature sensors (&).
  • second temperature sensors &
  • the present invention in case of heating in any of the first temperature sensor (5) measuring the ambient temperature and the second temperature sensors (6) which are connected in parallel to a single microprocessor port and placed on the air flow paths between the cooking device (8) and the fan (4), in different types of cookers, at different power and levels, at different exhaust hood (1) levels, with different cooking vessels and placements, it is provided that the start of the cooking process in any one of the cooking zones of the cooking device (8) is detected, that the cooking process load and the powers/levels of the cooker are detected, that the exhaust hood (1) operational level (motor suction power) is automatically adjusted, that the end of the cooking process is detected, and that a single microprocessor port meets the need by connecting the second temperature sensors (6) to each other in parallel.

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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)
EP23165387.4A 2022-05-13 2023-03-30 Hotte d'aspiration à performance de fonctionnement automatique améliorée Pending EP4276363A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR202207768 2022-05-13

Publications (1)

Publication Number Publication Date
EP4276363A1 true EP4276363A1 (fr) 2023-11-15

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ID=85792191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23165387.4A Pending EP4276363A1 (fr) 2022-05-13 2023-03-30 Hotte d'aspiration à performance de fonctionnement automatique améliorée

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EP (1) EP4276363A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3922090A1 (de) 1989-07-05 1991-01-17 Ruhrgas Ag Dunstabzugshaube fuer kochherde
CN2491733Y (zh) 2001-05-22 2002-05-15 邱继宇 一种智能排油烟机
DE102006041581A1 (de) 2006-09-05 2008-03-06 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Schutz vor Überhitzung einer Dunstabzugsvorrichtung
WO2010065793A1 (fr) * 2008-12-03 2010-06-10 Oy Halton Group Ltd. Système et procédé de commande d'écoulement d'échappement
EP2746681A1 (fr) * 2012-12-20 2014-06-25 Diehl AKO Stiftung & Co. KG Hotte aspirante et procédé de commande du fonctionnement d'une hotte aspirante
CN203869130U (zh) * 2014-06-05 2014-10-08 浙江德乐电器有限公司 一种内置式温度探头的吸油烟机
CN204943602U (zh) * 2015-07-17 2016-01-06 张伟颢 可自动启闭的除油烟机
CN209688934U (zh) * 2019-01-09 2019-11-26 陈锡涛 智能控制吸油烟机及侧吸式智能控制吸油烟机
WO2020078670A1 (fr) 2018-10-15 2020-04-23 Arcelik Anonim Sirketi Hotte aspirante comprenant un capteur de température

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3922090A1 (de) 1989-07-05 1991-01-17 Ruhrgas Ag Dunstabzugshaube fuer kochherde
CN2491733Y (zh) 2001-05-22 2002-05-15 邱继宇 一种智能排油烟机
DE102006041581A1 (de) 2006-09-05 2008-03-06 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Schutz vor Überhitzung einer Dunstabzugsvorrichtung
WO2010065793A1 (fr) * 2008-12-03 2010-06-10 Oy Halton Group Ltd. Système et procédé de commande d'écoulement d'échappement
EP2746681A1 (fr) * 2012-12-20 2014-06-25 Diehl AKO Stiftung & Co. KG Hotte aspirante et procédé de commande du fonctionnement d'une hotte aspirante
CN203869130U (zh) * 2014-06-05 2014-10-08 浙江德乐电器有限公司 一种内置式温度探头的吸油烟机
CN204943602U (zh) * 2015-07-17 2016-01-06 张伟颢 可自动启闭的除油烟机
WO2020078670A1 (fr) 2018-10-15 2020-04-23 Arcelik Anonim Sirketi Hotte aspirante comprenant un capteur de température
CN209688934U (zh) * 2019-01-09 2019-11-26 陈锡涛 智能控制吸油烟机及侧吸式智能控制吸油烟机

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