WO2022189116A1 - Verfahren und system zur handhabung eines lüfters einer dunstabzugsvorrichtung - Google Patents
Verfahren und system zur handhabung eines lüfters einer dunstabzugsvorrichtung Download PDFInfo
- Publication number
- WO2022189116A1 WO2022189116A1 PCT/EP2022/053930 EP2022053930W WO2022189116A1 WO 2022189116 A1 WO2022189116 A1 WO 2022189116A1 EP 2022053930 W EP2022053930 W EP 2022053930W WO 2022189116 A1 WO2022189116 A1 WO 2022189116A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fan
- extraction device
- user
- instantaneous
- fan speed
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000000605 extraction Methods 0.000 claims description 31
- 230000015654 memory Effects 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 11
- 239000003517 fume Substances 0.000 claims description 9
- 239000004519 grease Substances 0.000 description 13
- 238000010411 cooking Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010972 statistical evaluation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/304—Spool rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/305—Tolerances
Definitions
- the present invention relates to a method and a system for handling a fan of an extractor hood.
- Extractor devices in particular extractor hoods or table fans, are used to extract and clean fumes and vapors that arise during cooking.
- extractor hoods have a fan, which can also be referred to as a blower or fan.
- Extractor devices must be designed for a wide variety of installation conditions.
- exhaust air pipes have a wide variety of lengths and cross-sections, through which the exhaust air is routed to the outside through a wide variety of wall and roof openings.
- many vapor extraction devices can also be operated in a recirculating air operating mode and/or an exhaust air operating mode, between which the user can switch using an operating module. This results in a large number of possible operating points for the fan of the vapor extraction device, with a wide range of actual delivery volumes and noise levels.
- a method for handling a fan of an extractor device comprising the steps of determining at least the current fan speed of the fan, comparing at least the current fan speed with at least one reference value and outputting information based on the comparison.
- Handling of the fan is understood to mean in particular the determination and, if necessary, direct or indirect adjustment of the operating state of the fan.
- the result to be achieved by the fan is used as the operating state designated.
- the operating state is determined in particular by the working point of the fan, but is influenced by a number of boundary conditions of the fan.
- the operating point of the fan is determined in particular by the set fan stage, which in turn is determined by the power output of the fan electronics and the rotary field generated by the fan motor.
- a boundary condition can be, for example, the operating mode used (such as circulating air mode or exhaust air mode) of the fan.
- the boundary conditions that affect the operating state of the fan can also be environmental conditions.
- Ambient conditions can be, for example, the current amount of vapor, the quality and diameter of the exhaust pipe, saturation or the lack of odor or grease filters, or the room temperature.
- combinations of different boundary conditions can also affect the operating state of the fan.
- the fan is preferably a fan operated using EC technology.
- a fan operated using EC technology is a fan which is operated using an electronically commutated motor, which can also be referred to as a controllable motor.
- the fan is a BLDC fan, that is, a fan driven by a BLDC (brushless DC) motor.
- the operating point is controlled by measuring the fan speed and the current consumption of the motor.
- the operating point of the fan can be specifically adjusted via the power output of the fan electronics and the rotating field generated by the motor.
- the motor characteristics of BLDC fans are not specified in the design, but can be changed, i.e. they can be controlled.
- the method according to the invention includes the step of determining at least the instantaneous fan speed of the fan.
- the measurement of the fan speed is referred to as determining the fan speed.
- the determined or measured instantaneous fan speed can either be further processed directly in the method according to the invention, for example to determine the operating point of the fan, or can be stored for later processing.
- the instantaneous fan speed is compared with at least one reference value. The comparison can be direct or indirect.
- the instantaneous fan speed can be compared with a previously measured value of the fan speed or, for example, an operating point can be derived from the instantaneous fan speed and other values, which can be compared with previously determined values.
- information is also output on the basis of the comparison.
- the information that is output on the basis of the comparison can, for example, be information about the state of at least one part of the vapor extraction device, for example a filter, a pipework or the fan.
- the information can include a control instruction that is used to control the vapor extraction device and in particular the fan.
- the user or a controller can influence the vapor extraction device and improve its operation. For example, it may be recommended to throttle the fan speed or to clean a filter element.
- the information can be used for statistical purposes, which in turn can be used to design the extractor hood or provide instructions to the user.
- the instantaneous operating point of the fan is determined by additionally determining the instantaneous power consumption of the fan motor in addition to determining the instantaneous fan speed.
- the operating point is preferably compared with at least one reference value, which is part of a previously determined characteristic.
- a previously determined characteristic curve results from a reference delivery volume measurement by comparing the measured values of current and fan speed under defined boundary conditions, in particular ambient conditions.
- the reference displacement is related to specific combinations of current draw and fan speed.
- the characteristic curves are related to specific operating states via the defined boundary conditions, in particular ambient conditions.
- a reference delivery volume measurement is carried out on a fume extraction device that is operated in the exhaust air mode and which is connected to an exhaust air pipe that is sufficiently dimensioned according to the technical specifications.
- the fan speed and the delivery volume can now be measured for a large number of flows.
- the combination of all such measurements results in a characteristic curve for the operating state, which is characterized by the boundary conditions, in particular ambient conditions.
- the measurement of the combination of power consumption and fan speed at the place of use results in the current working point.
- the current operating point is compared with a previously determined characteristic. In particular, the comparison examines whether the measured combination of power consumption and fan speed was present in the reference delivery volume measurement. If this is the case, then the operating state corresponds to the operating state that was present when the reference displacement volume was measured. If the instantaneous operating point deviates from the reference delivery volume measurements on which the previously determined characteristic curve of the fan is based, then the fan is operated under different boundary conditions, for example ambient conditions, than in the case of the
- a deviation of the operating point from the characteristic curve of the fan thus indicates a change in the boundary conditions, for example ambient conditions, and thus a different operating state of the fan.
- the reference delivery volume measurement may have been carried out in the exhaust air mode, with an exhaust air pipe having a large diameter being connected to the fume extraction device.
- the extractor device can also be operated in the exhaust air module, but be connected to a much smaller exhaust air pipe.
- the fan then requires a significantly higher power consumption during operation at the same number of revolutions, since the exhaust air accumulates between the fan and the exhaust air pipe and the fan has to work against the additional air resistance. Since this specific combination of number of revolutions and power consumption did not occur in the reference displacement measurement, the fan is now apparently in a different operating state. A change in the operating conditions can thus be detected by comparing the instantaneous operating point with the previously determined characteristic curve. The information that In this case, a recommendation for adjusting the current operating point can be output, for example.
- the previously determined characteristic curve can be determined by the user selecting an operating mode of the fan.
- the user can choose between a noise-optimized and a displacement-optimized operating mode.
- the noise-optimized operating state can provide a lower fan speed, or the delivery volume-optimized operating state can provide a higher fan speed.
- the information is a control recommendation to control electronics.
- the electronic control system is preferably an electrical circuit that measures the power consumption of the fan and the fan speed and can determine the fan speed by setting a current.
- control electronics can process this control recommendation directly and either forward it to the fan electronics or, for example, control the fan directly itself.
- information may include a recommendation to the user. This allows the user to manually adjust the fan level, and thus the power consumption, to the operating state. In this way, error detection and error output is also possible during operation of the vapor extraction device. For example, the absence of a filter can be pointed out.
- the extractor can inform the user of deviations in the operating conditions from the stored characteristic. It is also possible that the device is operated at an insufficient fan level for the amount of steam produced during a cooking process and that the grease filter becomes clogged with water.
- the control recommendation to the user can then consist, for example, in selecting a higher fan level. For example, in the air recirculation operating mode, the user can also be made aware that an odor or grease filter is not being used.
- the change in the current operating point over time can be detected.
- the change over time can affect a time frame of a few seconds or minutes, but it can also affect the entire operating time or service life of the vapor extraction device.
- the grease filter can become clogged over a longer period of time. This is associated with a steady increase in fan speed compared to when the grease filter was new.
- the user could get a message to clean the grease filter.
- error detection on wall boxes with flaps is also possible. For example, frozen flaps on wall conducts can suddenly open as soon as the extractor hood is put into operation. However, it is also possible, for example, to automatically close spring-driven wall conducts again if the extractor device does not build up sufficient pressure.
- a system for handling a fan of a fume extraction device with a fan for carrying out the method according to the invention.
- the system includes: control electronics for measuring at least the fan speed of the fan, a processing unit for comparing at least the instantaneous fan speed of the fan with a reference value, and an output unit for outputting a control instruction.
- the system has a memory for storing at least one reference value.
- the system has a determination unit for determining an operating state based on the comparison.
- control electronics, the memory, the processing unit, the determination unit and the output unit can be designed as a common unit.
- control electronics the memory, the processing unit, the determination unit and the output unit can be embodied in a system-on-a-chip.
- the system includes control electronics for measuring the power consumption and the fan speed of the fan to determine a current operating point of the fan, a memory for storing a previously determined characteristic, a processing unit for comparing the current operating point of the fan with a previously determined characteristic of the fan , a determination unit for determining the operating state based on the comparison of current operating point of the fan with a previously determined characteristic curve of the fan and an output unit for outputting a control recommendation.
- At least one characteristic curve can be previously stored in the memory.
- a characteristic curve for operation in the exhaust air mode can be stored in the memory.
- a characteristic curve can also be stored in the memory for operation in the recirculation mode.
- both characteristic curves can also be stored or several and/or other characteristic curves can be stored.
- the vapor extraction device can have a communication interface which is connected to the control electronics and/or the memory and/or the output unit.
- the user can, for example, access the control electronics directly via the communication interface.
- the control electronics For example, it is possible for the user to set a fan level directly on the extractor hood.
- the communication interface it is also possible for the communication interface to be connected to the output unit, so that important information can be displayed to the user.
- the user it is also possible for the user to have access to the memory of the vapor extraction device via the communication interface and thus be able to modify the stored characteristics.
- the communication interface can be used for communication with a user device, in particular with a smartphone or a tablet.
- the communication interface can be a wireless communication interface.
- the communication interface can be wired.
- the communication interface can be the Home Connect interface.
- a user can view the characteristic curve of the vapor extraction device on his smartphone.
- the user for example, to receive error messages from the vapor extraction device directly on their computer or tablet.
- the user is informed, for example, that an unsuitable exhaust air pipe is being used, or that he is informed that he can expect performance losses as a result of this compared to the information given in the catalog for the vapor extraction device.
- the communication interface can also be a display with operating options on the vapor extraction device.
- a display can be a status light, for example, but it can also be an LCD display, but it can also be another display or an LED light or a combination of several LED lights or a signal tone.
- An operating option includes, for example, buttons or sliders, but also touch-sensitive operating units such as capacitive touchscreens.
- At least one previously determined characteristic curve of the fan can be stored in the memory from a database via the communication interface.
- a characteristic curve can be stored in the database that corresponds to recirculation mode without a grease filter with an exhaust air pipe on the wall box.
- a characteristic curve can also be stored in the database, which corresponds to the exhaust air operation io with grease filter and large exhaust pipe.
- Characteristic curves can also be stored for general air recirculation operation, which can be used independently of the filter used.
- the system can record a series of measurements relating to the power consumption and fan speed of the fan, measure the characteristic curve of the operating state and store the characteristic curve in the memory.
- a characteristic curve can be stored in the memory on the day of installation, and changes in the extractor device over time that are noticeable at the current operating point can be reported to the user. This also allows the operating status to be calibrated.
- FIG. 1 a schematic representation of an embodiment of the system and the method
- Figure 1 shows a schematic representation of an embodiment of the system and the method for handling a fan 10 of a vapor extraction device 1.
- the control electronics 2 measures the current and the fan speed of the fan 10, whereby the operating point 14 of the fan 10 is determined.
- the control electronics 2 regulates the power consumption and the fan speed of the fan 10 by accessing a previously determined characteristic curve 16 of the fan 10 from the memory 18 .
- the characteristic curve 16 is used to store optimal combinations of current consumption and fan speed of the fan 10 for a previously determined operating mode 40 .
- the current working point 14 is compared with the working points from the characteristic curve 16 in the processing unit 3 . A comparison can mean that the instantaneous operating point 14 is above the characteristic 16 or below the characteristic 16 .
- the determination unit 4 determines the actual operating state 40 on the basis of this comparison result.
- the output unit 5 can then output a control recommendation 50 from the actual operating state 40 .
- the control recommendation 50 can be routed directly to the control electronics 2, for example.
- the control electronics 2 can then, for example, adapt the power consumption and the fan speed of the fan 10 on the basis of the control recommendation 50 .
- the output unit 5 can pronounce a control recommendation 50 to the user 100 via the communication interface 103 .
- This can be done, for example, by the user 100 being able to read a control recommendation 50 from a display.
- the control recommendation 50 can consist, for example, in increasing the fan level and thus the fan speed.
- the user 100 can use a switch on the communication interface 103 to communicate a desired change in the fan level to the electronic control system 2 .
- control electronics 2 it is also possible for the control electronics 2 to include the memory 18, the processing unit 3, the determination unit 4 and the output unit 5; this is indicated by the dashed line.
- the user 100 can communicate with a database 102 via a computer 101 .
- the user 100 can use this database 102 and the computer 101 to transmit a previously determined characteristic curve 16 to the memory 18 of the vapor extraction device 1 via the communication interface 103 .
- broken lines 2 also indicate that the memory 18, the control electronics 2, the processing unit 3, the determination unit 4 and the output unit 5 can be designed in one piece. In this case, the entire unit is also called control electronics 2.
- FIG. 2 shows various characteristic curves 161, 162, 163 of the extractor device 1.
- Characteristic curve 161 can, for example, correspond to an operating state 40 in which the extractor device 1 is connected to a sufficiently dimensioned exhaust pipe in the exhaust air mode. Thus it is possible with a small current consumption achieve maximum fan speed.
- Characteristic curve 162 can, for example, correspond to air recirculation mode with an odor and grease filter installed.
- Characteristic curve 163 can be the characteristic curve of a specific operating state 40 at the place of use of the vapor extraction device 1 .
- the current working point 14 is on the characteristic curve 163, so that the extractor device 1 is in the operating mode that corresponds to the characteristic curve 163. If the characteristic 161 or 162 were stored in the memory 18, the system of the fume extraction device 1 could issue an error message, since the current working point 14 would not correspond to the stored characteristic curves 161 or 162.
- Vapor extraction devices can be individually adapted to different boundary conditions with the present invention.
- the present invention can be used in the following cases, for example.
- the device is operated at an insufficient fan level for the amount of water vapor produced during a cooking process and the grease filter becomes clogged with water, this can be recognized by the increasing fan speed. The user can get a hint to select the next higher fan level.
- the grease filter slowly becomes clogged over a longer period of time, this is associated with an increase in engine speed compared to when it was new. The user can get a message to clean the grease filter.
- a statistical evaluation can be carried out as to how many customers have not installed an odor filter in the device despite the recirculation mode selected, or a statistical evaluation of the quality of the exhaust air pipes used in the field can be carried out.
- a fault can be detected in wall boxes, for example in the case of frozen wall boxes with slats that suddenly open, or wall boxes that are spring-driven to close again because the extractor hood cannot build up sufficient pressure. produce such errors Sudden speed changes or periodically changing speeds. Such speeds can be recognized and used according to the invention.
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- Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280020260.8A CN116997723A (zh) | 2021-03-09 | 2022-02-17 | 用于操纵抽油烟装置的风扇的方法和系统 |
EP22707671.8A EP4305312A1 (de) | 2021-03-09 | 2022-02-17 | Verfahren und system zur handhabung eines lüfters einer dunstabzugsvorrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021202255.3 | 2021-03-09 | ||
DE102021202255.3A DE102021202255A1 (de) | 2021-03-09 | 2021-03-09 | Verfahren und System zur Handhabung eines Lüfters einer Dunstabzugsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022189116A1 true WO2022189116A1 (de) | 2022-09-15 |
Family
ID=80628462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/053930 WO2022189116A1 (de) | 2021-03-09 | 2022-02-17 | Verfahren und system zur handhabung eines lüfters einer dunstabzugsvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4305312A1 (de) |
CN (1) | CN116997723A (de) |
DE (1) | DE102021202255A1 (de) |
WO (1) | WO2022189116A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013204141A1 (de) * | 2013-03-11 | 2014-09-11 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugshaube |
US20160040679A1 (en) * | 2014-07-23 | 2016-02-11 | Zhongshan Broad-Ocean Motor Co., Ltd. | Method for measuring air volume of blower motor |
JP2019190779A (ja) * | 2018-04-27 | 2019-10-31 | 富士工業株式会社 | レンジフードおよびレンジフードシステム |
CN111043638A (zh) * | 2020-01-03 | 2020-04-21 | 宁波方太厨具有限公司 | 一种吸油烟机及该吸油烟机的风机转速偏差控制方法 |
-
2021
- 2021-03-09 DE DE102021202255.3A patent/DE102021202255A1/de active Pending
-
2022
- 2022-02-17 CN CN202280020260.8A patent/CN116997723A/zh active Pending
- 2022-02-17 EP EP22707671.8A patent/EP4305312A1/de active Pending
- 2022-02-17 WO PCT/EP2022/053930 patent/WO2022189116A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013204141A1 (de) * | 2013-03-11 | 2014-09-11 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugshaube |
US20160040679A1 (en) * | 2014-07-23 | 2016-02-11 | Zhongshan Broad-Ocean Motor Co., Ltd. | Method for measuring air volume of blower motor |
JP2019190779A (ja) * | 2018-04-27 | 2019-10-31 | 富士工業株式会社 | レンジフードおよびレンジフードシステム |
CN111043638A (zh) * | 2020-01-03 | 2020-04-21 | 宁波方太厨具有限公司 | 一种吸油烟机及该吸油烟机的风机转速偏差控制方法 |
Also Published As
Publication number | Publication date |
---|---|
DE102021202255A1 (de) | 2022-09-15 |
EP4305312A1 (de) | 2024-01-17 |
CN116997723A (zh) | 2023-11-03 |
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