EP3489585B1 - Dispositif formant hotte aspirante et son procédé de fonctionnement - Google Patents

Dispositif formant hotte aspirante et son procédé de fonctionnement Download PDF

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Publication number
EP3489585B1
EP3489585B1 EP18204835.5A EP18204835A EP3489585B1 EP 3489585 B1 EP3489585 B1 EP 3489585B1 EP 18204835 A EP18204835 A EP 18204835A EP 3489585 B1 EP3489585 B1 EP 3489585B1
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EP
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Prior art keywords
fan
designed
flow channel
extractor hood
sorption filter
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EP18204835.5A
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German (de)
English (en)
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EP3489585C0 (fr
EP3489585A1 (fr
Inventor
Marco Wiechert
Bogdan Jagos
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Miele und Cie KG
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Miele und Cie KG
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    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the invention relates to a method for operating an extractor device according to the preamble of claim 1, as well as to such an extractor device according to claim 9.
  • a vapor extractor is a device for extracting and usually filtering the vapors that arise when cooking, i.e. cooking or frying fumes.
  • Such a device usually consists essentially of a housing in which a grease filter, such as a disposable fleece mat or a washable metal filter, is arranged.
  • the vapor extractor also has a fan to suck in an air stream with the vapors from a cooking area into the vapor extractor and to guide it through the grease filter so that the fat can be removed from the vapors as completely as possible.
  • Recirculating air vapor extractors are now very common, especially in private households, where the vapor is returned to the room, such as the kitchen, after the grease filter, so that no heat energy can be lost to the environment.
  • Recirculating air vapor extractors therefore usually have an additional odor filter, for example in the form of an activated carbon filter, in order to remove the cooking or frying smells from the vapor as completely as possible, which the user may find more pleasant.
  • a moisture-adsorbing medium saturated with moisture must therefore be replaced by the user over time, which can mean effort and expense for the user. It is also possible to remove the moisture-adsorbing medium saturated with moisture from the circulating air extractor and dry it in an oven, for example, so that it can then be reused. This thermal regeneration of a moisture-adsorbing medium saturated with moisture can save the cost of a new moisture-adsorbing medium, but it means effort for the user. Drying in the oven also costs energy and time, during which the circulating air extractor cannot be used.
  • the DE 10 2007 046 044 A1 an extractor device for removing an air flow from a room, which has a housing, at least one fan for conveying the air flow through the extractor device and a sorption unit arranged in the air flow with sorption agent for sorbing moisture in the air flow.
  • the extractor device further comprises a regeneration device for regenerating the sorption agent, which comprises at least one heating element and a heat distribution means.
  • the disadvantage here is that additional energy is still required for active thermal regeneration.
  • Another disadvantage is that the thermal regeneration takes place independently of the kitchen's room climate, so that the release of moisture from the saturated moisture-absorbing medium can lead to the kitchen, for example, becoming oversaturated with moisture.
  • both the hob and the extractor hood are equipped with a communication module that enables the transmission of device data and operating states via the power grid.
  • a communication module that enables the transmission of device data and operating states via the power grid.
  • an initially high power setting of the hob is usually reduced to a lower power level after frying. If such a frying process is detected, the intensity of the
  • the fan system is not necessarily throttled. This allows the fumes produced during frying to be effectively extracted.
  • an extractor hood has a control element. This is also revealed in the printed documents DE 10 2004 034 871 A1 and US 5 690 093 A .
  • the setting of operating parameters for the extractor hood can also be done using a mobile input device, as the publication DE 10 2011 082 926 A1 teaches.
  • the invention therefore addresses the problem of providing an extractor device, in particular a recirculating air extractor device, of the type described at the outset, so that regeneration of the moisture-adsorbing medium can be carried out more easily and/or more quickly and/or while avoiding oversaturation of the environment, such as a kitchen, with moisture.
  • regeneration should be able to take place with less energy expenditure and/or depending on the ambient conditions.
  • thermal regeneration should be able to be avoided. This should preferably be able to take place automatically, i.e. without user intervention.
  • At least an alternative to known regeneration options for the moisture-adsorbing medium of extractor devices, in particular recirculating air extractor devices, should be created.
  • the present invention therefore relates to a method for operating an extractor device, whereby the extractor device can also be referred to as a vapor extractor.
  • the extractor device can be an exhaust air extractor device or preferably a recirculation air extractor device, whereby the properties according to the invention are more effectively applied in the latter device, as will be explained below.
  • this release can take place to an environment outside a building and in the case of a recirculating air extractor device, it can be released back to the immediate environment of the recirculating air extractor device, such as a kitchen.
  • the housing forms the flow channel at least in part, so that the flow channel runs at least partially within the housing and the inlet opening and the outlet opening break through the housing.
  • the fume extractor device also has at least one sorption filter, which is arranged within the flow channel and is designed to absorb moisture from the air flow.
  • the sorption filter can also be referred to as a moisture absorber. It serves to absorb and store moisture from the air flow of the vapor, so that the vapor leaves the sorption filter with less moisture than when it entered the sorption filter.
  • the extractor device according to the invention is characterized in that it is designed without a device for generating heat energy. This makes it possible for the sorption filter to be regenerated during drying operation with little energy expenditure.
  • the extractor device uses the ambient air to regenerate the sorption filter, distributed over a period of time that is longer than the period in which vapor is generated.
  • the sorption filter preferably has a particularly high moisture absorption capacity and/or a particularly high moisture release tendency.
  • the extractor device is designed to quickly absorb a lot of moisture from the vapor in a humid climate, such as when vapor is created during cooking, and to release the absorbed moisture again easily and quickly in a dry climate, e.g. outside of a vapor-generating cooking process.
  • the threshold between a dry and a humid climate can preferably be in the range between 40 percent and 70 percent relative humidity, preferably based on the humidity within the flow channel.
  • control unit of the extractor device is designed to switch the fan on at least one predetermined first time and/or switch it off at least one predetermined second time in a drying operation. Additionally or alternatively, the control unit of the extractor device is designed to switch the fan on after a predetermined first time interval and/or switch it off after a predetermined second time interval. This allows the sorption filter to be dried at a time when the user feels little disturbed by the operation of the extractor device and when the ambient air of the extractor device is drier than at the time of a cooking process or immediately after a cooking process. This achieves high energy efficiency during regeneration and a high level of comfort.
  • the extractor hood is in normal operation during cooking. A lot of steam is then created above the hob, which is absorbed by the extractor hood and stored in the sorption filter.
  • the extractor hood fan can be operated with at least one control speed and/or one control output. Designs are also possible in which the extractor hood is operated in normal operation with several different control speeds and/or several different control outputs.
  • the extractor device is usually switched off when not cooking. Regeneration of the sorption filter is possible in this state.
  • a preferred embodiment of the invention provides that the extractor device is operated in a drying mode when not cooking.
  • the extractor device is in an operational readiness state in order to operate the extractor device fan with at least one drying speed and/or at least one drying power. At least one of the at least one drying speed and/or the at least one drying power is lower than the smallest of the at least one control speed and/or the at least one control power. This provides particularly good support for the regeneration of the sorption filter, with low fan noise and/or low fan energy consumption.
  • One embodiment provides that in drying operation all drying speeds and/or drying outputs are lower than all control speeds and/or control outputs in normal operation.
  • the fan In drying mode, the fan can be operated depending on predefined or stored time sequences and/or depending on recorded sensor values, as described in detail below.
  • Such a sorption filter can preferably be created by creating an open-pored, macroporous structure of an activated carbon filter through a very high chemical activation, whereby the hydrophilicity of the raw material, i.e. the wood, is retained.
  • a sorption filter shows a particular tendency to adsorb water vapor at high humidity. Between 70 and 80 percent RH (relative humidity), this activated carbon adsorbs a comparatively large amount of moisture, while conventional activated carbons absorb little or no moisture at this point. At the same time, however, the binding forces on the macroporous surface are sufficiently low so that the water vapor molecules can be released again when the relative humidity drops.
  • Chemical activation is part of the activated carbon manufacturing process.
  • a mostly uncharred carbonaceous material is first mixed with dehydrating and oxidizing chemicals.
  • the chemicals used here include zinc chloride, phosphoric acid, sulfuric acid, etc.
  • the mixture is then heated. This generally takes place at 400-900 °C.
  • the activating agents are then washed out and recovered.
  • Another process is dry distillation, in which the material is heated in an oxygen-free atmosphere and volatile components are driven off at temperatures of around 800 °C.
  • the raw activated carbon obtained in this way is then oxidatively activated at 400-1000 °C with steam or carbon dioxide, and sometimes with air.
  • Low chemical activation occurs in the temperature range from 400°C to around 600°C
  • high chemical activation occurs in the temperature range from 700°C to 1000°C.
  • the sorption filter has sufficient capacity for moisture binding during each cooking process.
  • the sorption filter has a higher water absorption capacity (adsorption) and water release capacity (desorption) than conventional activated carbon filters, which have low these properties.
  • adsorption water absorption capacity
  • desorption water release capacity
  • the difference between high and low adsorption or desorption can be seen in particular in the fact that in a boiling test, when 250 ml of water evaporates, the sorption filter adsorbs at least 30 percent more water than a conventional activated carbon filter. According to one embodiment, the sorption filter adsorbs approximately twice the amount of water as a conventional activated carbon filter. When releasing water, the sorption filter behaves similarly and releases water over 20 percent faster than a conventional activated carbon filter. According to one embodiment, the sorption filter desorbs the same amount of water approximately twice as fast as a conventional activated carbon filter.
  • the sorption filter has an adsorption capacity of 0.05 to 0.1 grams of water per gram of sorption filter, preferably approximately 0.065 grams of water per gram of sorption filter.
  • the sorption filter has a desorption capacity of 0.01 to 0.08 grams of water per gram of sorption filter, preferably approximately 0.03 grams of water per gram of sorption filter.
  • the extractor device further comprises at least one fan which is arranged within the flow channel, preferably in the air flow in front of the sorption filter, and is designed to generate and/or amplify the air flow, wherein the control unit of the extractor device is designed to operate the fan for air drying of the sorption filter.
  • the present invention is based on the idea that without a fan, the air flow through the flow channel can only be generated by the vapor itself, if at all, which can lead to a comparatively weak air flow and thus also to a comparatively low reduction in moisture by the sorption filter.
  • the air flow and thus also the effect of the sorption filter can thus be increased if the air flow is generated or increased by a fan.
  • a fan of an extractor fan that may already be present for this purpose can also be used according to the invention to generate an air flow when there is no vapor present to be fed to the sorption filter.
  • the fan can be used by the user, for example, during cooking to feed the vapor as an air flow to the sorption filter in order to feed moisture to the sorption filter and thereby remove moisture from the vapor-containing air flow.
  • the filter can be used automatically, ie without direct intervention by the user, to supply the sorption filter, which is at least partially saturated with moisture, with an air flow without vapor, so that moisture can be supplied to the air flow and thereby removed from the sorption filter.
  • the sorption filter can be dried automatically by air without additional technical means such as a heating element, so that the next time the user uses the extractor device, e.g. for cooking, a drier sorption filter with a higher effectiveness is available than previously known.
  • the regeneration of the sorption filter free of heat energy generated by the extractor system enables a particularly energy-efficient design of the extractor system.
  • sorption filter can also be regenerated earlier, so that the sorption filter can always be used with a comparatively high level of efficiency.
  • additional measures such as the use of a heating element for thermal regeneration and the associated energy costs can be avoided. This can make the extractor hood more cost-effective, lighter and/or more space-saving, and reduce operating costs.
  • the present invention also relates to an extractor device, preferably a recirculating air extractor device, with a housing which at least partially forms a flow channel for guiding an air flow, wherein the flow channel has an inlet opening which is designed to be arranged facing a source of vapor, and wherein the flow channel has an outlet opening which is designed to be arranged facing away from the source of vapor, and with at least one sorption filter which is arranged within the flow channel and is designed to absorb moisture from the air flow.
  • an extractor device preferably a recirculating air extractor device, with a housing which at least partially forms a flow channel for guiding an air flow, wherein the flow channel has an inlet opening which is designed to be arranged facing a source of vapor, and wherein the flow channel has an outlet opening which is designed to be arranged facing away from the source of vapor, and with at least one sorption filter which is arranged within the flow channel and is designed to absorb moisture from the air flow.
  • the extractor device is characterized by at least one fan which is arranged within the flow channel, preferably in the air flow in front of the sorption filter, and is designed to generate and/or amplify the air flow, wherein the extractor device is designed to operate the fan to dry the air from the sorption filter.
  • the extractor device is designed to operate the fan at at least one predetermined point in time and/or within at least one predetermined period of time and/or at least one predetermined time interval and/or for at least one predetermined period of time. This allows time-dependent automatic operation to take place.
  • This aspect of the present invention is based on the idea of releasing the absorbed moisture back into the environment preferably at different times and/or over a longer period of time. Doing this at a different time from the cooking process can be advantageous so that the user is not disturbed by the noise of the fan immediately after cooking and thus probably while eating. Doing this over a longer period of time, for example, over up to 23 hours until the next lunch the following day can be advantageous so that the environment is not burdened with too much additional moisture.
  • At least one time can be specified for air drying of the sorption filter at which this should be carried out automatically.
  • This can be a time such as at midnight or during working hours on weekdays, e.g. at 9 a.m., when the source of fumes such as the cooking area is not usually used by the user, so that there can be no conflict between use and drying of the sorption filter.
  • Several such times can also be specified in order to be able to carry out the drying several times or regularly, so that, for example, a sorption filter that is as dry as possible can always be available in the morning, at midday and in the evening.
  • a time period for air drying the sorption filter can also be specified. This can be, for example, at night from 00:00 to 06:00 or during working hours on weekdays, e.g. between 09:00 and 11:00. Several time periods can also be specified, such as from 00:00 to 06:00, from 09:00 to 11:00 and from 14:00 to 17:00, during which cooking is not usually carried out.
  • a predetermined time interval can be specified, eg from the last use of the extractor device by the user, eg when cooking, in order to carry out air drying of the sorption filter. For example, after each use of the extractor device during a cooking process, an automatic air drying of the sorption filter can be started at a time interval of eg 60 minutes. Several time intervals can also be specified in order to e.g., to start a second air drying process 90 minutes after the cooking process. A periodic repetition of the air drying can also be specified, so that, e.g., after a cooking process, an automatic air drying of the sorption filter can be started several times, e.g., every 60 minutes.
  • a time period for automatic air drying of the sorption filter can be specified, so that this can be limited to 15 minutes, for example.
  • This can be particularly advantageous for repetitive, periodic or regular processes for automatic air drying of the sorption filter in order to achieve the desired drying without operating the fan continuously or for a long time, which can, for example, disturb a user due to the noise.
  • the stored moisture can be returned to the environment in a distributed and time-stretched manner, which can disturb a user significantly less.
  • air drying of the sorption filter can be carried out by operating the fan for 15 minutes every two hours 60 minutes after the end of the cooking process. This can be done for 22 hours, so that a sorption filter that is as completely dried as possible can be available again 23 hours after the last cooking process.
  • a diversified use of the possibilities according to the invention can be made, for example, by starting several drying processes of 15 minutes each at 60-minute intervals at night between midnight and 6 a.m., when the kitchen is not expected to be used for cooking on any day of the week, so that a sorption filter that has dried as completely as possible by itself is available in the morning. From then on, for example, after each use, which can vary over the course of a week and in particular in the difference between working days and the weekend, a further multiple drying process of 10 minutes each at 30-minute intervals can be started, delayed by 60 minutes from the cooking process, in order to only carry out a new air drying of the sorption filter when necessary, but then as quickly as possible, in order to avoid unnecessary energy consumption.
  • the extractor device is designed so that operation of the fan can be excluded at least at a predetermined time and/or within at least a predetermined period of time. For example, this can prevent the fan from making noise in the kitchen in the afternoon or evening or all day at the weekend, which could be perceived as annoying by the user.
  • the extractor device is designed so that the predetermined time and/or the predetermined period of time and/or the predetermined time interval and/or the predetermined period of time can be specified by a user.
  • This allows the user to adjust the extractor device according to the invention to his or her personal needs in order to achieve the desired air drying of the sorption filter with as little operating time and operating times as possible.
  • Preferred and excluded times or periods can also be specified when the hob is not expected to be used for cooking or when the fan should not be used to dry the air of the sorption filter. All of this can be specified according to times of day or times, days of the week, working days and weekends, weeks, months, holiday periods, etc. Different specifications can also be created for multiple users.
  • the extractor device has at least one external sensor which is designed to detect the air humidity outside the flow channel.
  • the control unit of the extractor device is designed to operate the fan depending on the air humidity outside the flow channel when the air humidity outside the flow channel is below a predetermined threshold.
  • the extractor fan is therefore designed so that during drying mode the extractor fan is only switched on if the air humidity outside the flow channel falls below a predetermined and/or selectable value.
  • the external sensor can be arranged on the extractor fan or on its housing on the outside in order to be able to record the air humidity outside the flow channel. However, the external sensor can also be separate from the extractor fan and arranged at a distance from it.
  • the external sensor can also be a device that is independent of the extractor fan or part of another device, e.g. another household appliance, particularly a kitchen appliance, or building technology, which can record the air humidity measurement data for other purposes and also make it available to the extractor fan. In these cases, the measured values can be transmitted to the extractor fan, preferably wirelessly.
  • the extractor device has at least one internal sensor which is arranged within the flow channel, preferably in the air flow behind the sorption filter, and is designed to detect the air humidity within the flow channel, wherein the extractor device is designed to operate the fan depending on the air humidity within the flow channel.
  • the extractor device is designed to operate the fan only when the air humidity inside the flow channel is greater than the air humidity outside the flow channel.
  • the automatic air drying of the sorption filter can be reliably limited to times when the moisture released by the sorption filter through the air drying can also be safely absorbed by the ambient air, even in relation to time-dependent specifications for carrying out the air drying of the sorption filter.
  • the operation of the fan can also be automatically terminated when this condition is no longer met, because it can then be assumed that the sorption filter has been sufficiently dried.
  • the extractor device is designed to automatically adjust the power level of the fan.
  • the air drying of the sorption filter can be influenced not only by the duration of the fan's operation but also by the intensity of the fan's operation. This can increase the effectiveness of the drying and reduce noise pollution for the user.
  • control unit of the extractor device is designed to detect the duration of operation of the fan by a user and/or the setting of a power level of the fan by a user and/or the moisture generated and then to operate the fan automatically depending on the detected operating duration and/or the set power level and/or the moisture generated.
  • control unit of the extractor device is designed to detect the moisture generated above the hob, at least in the control mode, and to store a value for the moisture generated at the moment and/or over time. This makes it possible for the duration and/or intensity of the drying operation to take place depending on the previously determined load of the sorption filter.
  • the loading of the sorption filter is determined by one or more measured values of the internal sensor. According to a preferred embodiment, the loading of the sorption filter is determined by determining a gradient of the measured values of the internal sensor and the external sensor, in particular several gradients are taken into account over time.
  • the loading of the sorption filter is preferably determined during normal operation.
  • the air drying of the sorption filter can take place after the use of the extractor device, e.g. during a cooking process, depending on the vapor generated.
  • this can take place without the need for an internal sensor in the extractor device, because instead the extractor device can record how long and/or at what power level the extractor device's fan was operated by the user. From this it can be concluded how much moisture was released from the vapor to the sorption filter.
  • the moisture in the vapor can be recorded by the internal sensor over the duration of the cooking process, so that information is available on how much moisture was fed to the sorption filter, at least approximately, during the cooking process.
  • the subsequent automatic air drying of the sorption filter can be carried out with a corresponding duration and/or intensity in order to release exactly this estimated or measured absorbed moisture.
  • This allows the air drying of the sorption filter should be adapted as directly and simply as possible to the use of the sorption filter.
  • the intensity of the drying operation is determined by the number of ventilation intervals and/or the duration of the ventilation intervals and/or the speed or power of the fan during the drying operation.
  • the intensity of the drying operation can also be understood synonymously as the amount of air moved through the sorption filter during the drying operation.
  • the extractor device further comprises an odor filter which is arranged within the flow channel, preferably in the air flow behind the sorption filter, and is designed to absorb odors from the air flow. This also allows odors to be removed from the vapor, which can be more pleasant for a user, especially in the case of a recirculating air extractor device.
  • the extractor device further comprises a grease filter which is arranged within the flow channel and is designed to filter grease from the air flow, wherein the grease filter is preferably arranged in the air flow before the sorption filter, particularly preferably immediately after the inlet opening of the flow channel. This also allows grease to be removed from the vapor, which can be more pleasant for a user, especially in the case of a recirculating air extractor device.
  • the sorption filter is at least partially, preferably completely, designed as an activated carbon filter. This makes it possible to create a sorption filter that is as inexpensive and/or simple and/or robust as possible, which can be air-dried as described above.
  • the present invention also relates to a sorption filter for use in an extractor device as described above with a particularly high moisture absorption capacity and/or with a particularly high moisture release tendency. This makes it possible to create a sorption filter with which an extractor device according to the invention can be realized.
  • the fan of the extractor fan can be switched on and/or off either exclusively time-controlled or exclusively dependent on the evaluation of the sensors.
  • a particularly effective and convenient embodiment of the extractor fan is when the fan of the extractor fan can be switched on and/or off of the extractor fan in a combination of taking into account time specifications and sensor values.
  • an extractor device according to the invention can be operated in accordance with the invention as described above.
  • other properties and advantages described above can also be implemented as further method steps.
  • the expression “in the air flow before” is to be understood as meaning that a first component, which is arranged in the air flow before a second component, is first flowed through by the air flow, i.e. before the second component.
  • the expression “in the air flow behind” is to be understood as meaning that a first component, which is arranged in the air flow behind a second component, is last flowed through by the air flow, i.e. after the second component.
  • the above figure is viewed in Cartesian coordinates.
  • a longitudinal direction X which can also be referred to as depth X.
  • a transverse direction (not shown), which can also be referred to as width.
  • a vertical direction Z Perpendicular to both the longitudinal direction X and the transverse direction there is a vertical direction Z, which can also be referred to as height Z.
  • Figure 1 shows a schematic sectional view of an extractor hood device 1 according to the invention, which can be used as a recirculating air extractor device 1, preferably within a kitchen, and can also be referred to as a recirculating air vapor extractor 1.
  • the recirculating air extractor device 1 has a housing 10 which is made of metal and forms or encloses a flow channel 11.
  • the housing 10 has an inlet opening 11a of the flow channel 11 at the height Z in the lower area, which forms a vapor screen 12. From the inlet opening 11a extends the flow channel 11 at height Z essentially straight upwards through the housing 10 up to an outlet opening 11b of the flow channel 11 at the upper end of the housing 10.
  • the inlet opening 11a and the outlet opening 11b represent the only openings or breakthroughs in the housing 10, which is otherwise closed so that an air flow can be guided through the flow channel 11.
  • the housing 10 is rectangular in the lower area of the vapor shield 12 in both depth X and width (not shown) and corresponds approximately to the shape of a cooking area below it at height Z as a source of vapor (not shown).
  • Cooking vapors can rise upwards as vapors at height Z from the cooking area or the cookware used on the cooking area and enter the flow channel 11 via the inlet opening 11a.
  • the vapors can rise further upwards as an air stream through the flow channel 11 at height Z due to their own heat and leave the flow channel 11 back into the kitchen via its outlet opening 11b.
  • a grease filter 15 is arranged inside the housing 10 in the flow channel 11 immediately behind its inlet opening 11a, through which the air flow flows and in the process filters grease from the vapors so that the vapors can exit again from the outlet opening 11b with a reduced fat content. This can improve the air quality in the kitchen for a user.
  • an odor filter 13 is arranged inside the housing 10 in the flow channel 11 near the outlet opening 11b, through which the air flow flows and can remove odors from the vapors so that the vapors can exit the outlet opening 11b with a reduced odor content. This can also improve the air quality in the kitchen for a user.
  • a sorption filter 14 in the form of an activated carbon filter 14 is arranged in the air flow in front of the odor filter 13 in the flow channel 11, through which the air flow can flow and the vapor can remove moisture from the vapor. This can improve or maintain the effect of the odor filter 13.
  • a fan 16 is also arranged within the flow channel 11 between the steam screen 12 and the sorption filter 14, so that the air flow is increased by the operation of the fan 16.
  • the fan 16 can be controlled and operated by a control unit (not shown) of the recirculating air extractor device 1. This can be done, for example, by the user through inputs which are shown on a control panel (not shown) on the front side of the housing 10 in the area of the vapor screen 12 in the depth X to the user to the right in the representation of the Figure 1 This allows the fan 16 to be switched on and off and different power levels for the switched-on state to be selected.
  • the adsorbed moisture of the vapor is stored by the sorption filter 14, it becomes saturated with moisture over time, whereby the sorption filter 14 can increasingly lose its effectiveness. This can have a corresponding effect on the effectiveness of the odor filter 13.
  • a sorption filter 14 with a particularly high moisture absorption capacity is used, so that a reduction in the effect of the sorption filter 14 can be delayed as long as possible.
  • the sorption filter 14 has a particularly high tendency to release moisture, so that a comparatively effective drying of the sorption filter 14 can take place.
  • the sorption filter 14 can be restored to the dryest possible state with a correspondingly high effect as quickly as possible.
  • the fan 16 is used automatically outside of the cooking process by the recirculating air extractor device 1 to dry the sorption filter 14 again.
  • the fan 16 is operated so that ambient air is conveyed or sucked into the flow channel 11 via the inlet opening 11a, flows through the sorption filter 14 and absorbs moisture, which is released into the environment via the outlet opening 11b.
  • the user can always be provided with a sorption filter 14 that is as dry as possible and has a correspondingly good effect, very simply, promptly, quickly and without additional measures such as a heating element and without user intervention.
  • This can have a positive effect on the effect of the odor filter 13.
  • the automatic air drying of the sorption filter 14 is carried out by terminating a manual operation of the recirculating air extractor device 1 by a user for cooking via an external sensor 17 of the recirculating air extractor device 1, which is arranged on the outside of the housing 10, the humidity of the ambient air is measured.
  • the humidity within the flow channel 11 is measured by means of an internal sensor 18 arranged there, which can be regarded as representative of the moisture content of the sorption filter 14 both when the fan 16 is at a standstill and when the fan 16 is operating outside of a steam-generating cooking process.
  • the recirculating air extractor device 1 automatically starts the fan 16 to dry the air of the sorption filter 14.
  • the fan 16 is preferably not operated continuously but periodically for a predetermined short period of time.
  • the two measured values are continuously compared with one another and the operation of the fan 16 is maintained as long as the measured value of the humidity in the flow channel 11 is above the measured value of the humidity in the environment. Only when this condition is no longer met will the operation of the fan 16 be automatically stopped again by the recirculation extractor device 1.
  • information about the moisture saturation of the sorption filter 14, which can result from the previously described comparison of the two moisture measurement values, can be provided to the user via a display such as an LED display (not shown) on the front side of the housing 10 in the area of the vapor screen 12 in the depth X to the right in the representation of the Figure 1
  • a display such as an LED display (not shown) on the front side of the housing 10 in the area of the vapor screen 12 in the depth X to the right in the representation of the Figure 1
  • This information can also be transmitted to the cooking area and displayed there, for example.
  • This information can also be transmitted to a mobile device such as a tablet or a smartphone and displayed to the user via a so-called app.

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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)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (11)

  1. Procédé permettant de faire fonctionner un dispositif formant hotte aspirante (1),
    dans lequel le dispositif formant hotte aspirante (1) présente
    un boîtier (10) qui forme au moins dans certaines sections un canal d'écoulement (11) destiné au guidage d'un flux d'air, et dans lequel le canal d'écoulement (11) présente une ouverture d'admission (11a) qui est conçue pour être disposée en face d'une source de vapeur, et dans lequel le canal d'écoulement (11) présente une ouverture d'évacuation (11b) qui est conçue pour être disposée à l'opposé de la source de vapeur, et au moins un filtre à sorption (14) qui est disposé à l'intérieur du canal d'écoulement (11) et est conçu pour absorber l'humidité en provenance du flux d'air, et un ventilateur (16) qui est disposé à l'intérieur du canal d'écoulement (11), de préférence dans le flux d'air en amont du filtre à sorption (14), et est conçu pour produire et/ou amplifier le flux d'air, et
    une unité de commande qui est configurée pour commander le ventilateur (16) du dispositif formant hotte aspirante (1), et
    dans lequel le dispositif formant hotte aspirante (1) est conçu sans dispositif destiné à la production d'énergie thermique,
    caractérisé en ce que
    l'humidité produite au-dessus de la plaque de cuisson est détectée et mémorisée en tant que valeur pour l'humidité produite à un moment donné et/ou au cours du temps par l'unité de commande du dispositif formant hotte aspirante (1), au moins en mode de fonctionnement normal, et
    le dispositif formant hotte aspirante (1) est mis dans un mode de fonctionnement de séchage par l'unité de commande en fonction d'un moment prédéfini, lequel est prédéterminé par l'utilisateur, dans lequel l'unité de commande fait fonctionner (100) le ventilateur (16) en mode de fonctionnement de séchage pendant une durée prédéterminée par l'utilisateur ;
    et/ou
    le dispositif formant hotte aspirante (1) est mis dans un mode de fonctionnement de séchage par l'unité de commande en fonction d'un intervalle de temps prédéfini par rapport à la dernière manipulation du dispositif formant hotte aspirante (1) par l'utilisateur, dans lequel l'intervalle de temps est prédéterminé par l'utilisateur, et dans lequel l'unité de commande fait fonctionner (100) le ventilateur (16) en mode de fonctionnement de séchage pendant une durée prédéterminée par l'utilisateur.
  2. Procédé selon la revendication précédente, dans lequel
    le ventilateur (16) est mis en fonctionnement en fonction d'une humidité de l'air détectée, laquelle est détectée par un capteur extérieur (17) et/ou par un capteur intérieur (18), en particulier lorsque l'air ambiant du dispositif formant hotte aspirante est plus sec qu'au moment d'un processus de cuisson ou immédiatement après un processus de cuisson.
  3. Procédé selon l'une des deux revendications précédentes, dans lequel
    l'humidité produite au-dessus de la plaque de cuisson est détectée et mémorisée en tant que valeur pour l'humidité produite à un moment donné et/ou au cours du temps par l'unité de commande du dispositif formant hotte aspirante (1), au moins en mode de fonctionnement normal.
  4. Procédé selon l'une des revendications précédentes, dans lequel
    la durée et/ou l'intensité du mode de fonctionnement de séchage sont effectuées en fonction de la charge du filtre à sorption, laquelle est spécifiée au préalable.
  5. Procédé selon l'une des revendications précédentes, dans lequel
    l'unité de commande est configurée de sorte qu'un fonctionnement du ventilateur (16) est exclu à au moins un moment prédéfini et/ou dans au moins une période prédéfinie.
  6. Procédé selon l'une des revendications précédentes, dans lequel
    l'unité de commande est configurée de sorte que, dans un mode de fonctionnement de séchage, le ventilateur (16) est mis en marche à au moins un premier moment prédéfini et/ou est mis hors circuit à au moins un second moment prédéfini, et/ou
    le ventilateur (16) est mis en marche après un premier intervalle de temps prédéfini et/ou est mis hors circuit après un second intervalle de temps prédéfini.
  7. Procédé selon l'une des revendications précédentes, dans lequel
    le dispositif formant hotte aspirante (1) est conçu de sorte que la période prédéfinie et/ou l'intervalle de temps prédéfini sont prédéterminés par un utilisateur.
  8. Procédé selon l'une des revendications précédentes, dans lequel
    l'unité de commande est configurée de sorte que le ventilateur (16) est mis en fonctionnement en fonction de l'humidité de l'air à l'extérieur du canal d'écoulement (11) lorsque l'humidité de l'air à l'extérieur du canal d'écoulement (11) est inférieure à un seuil prédéterminé.
  9. Dispositif formant hotte aspirante (1) qui est prévu pour la détection de l'humidité de l'air produite au-dessus de la plaque de cuisson lors d'un processus de cuisson d'une plaque de cuisson,
    qui, dans un mode de fonctionnement normal, absorbe l'humidité en provenance des buées générées au-dessus de la plaque de cuisson et la stocke dans le filtre à sorption,
    comportant un boîtier (10) qui forme au moins dans certaines sections un canal d'écoulement (11) destiné au guidage d'un flux d'air, dans lequel le canal d'écoulement (11) présente une ouverture d'admission (11a) qui est conçue pour être disposée en face d'une source de vapeur, et dans lequel le canal d'écoulement (11) présente une ouverture d'évacuation (11b) qui est conçue pour être disposée à l'opposé de la source de vapeur, et
    comportant au moins un filtre à sorption (14) qui est disposé à l'intérieur du canal d'écoulement (11) et est conçu pour absorber l'humidité en provenance du flux d'air, et
    comportant un ventilateur (16) qui est disposé à l'intérieur du canal d'écoulement (11), de préférence dans le flux d'air en amont du filtre à sorption (14), et est conçu pour produire et/ou amplifier le flux d'air, et
    comportant une unité de commande qui est configurée pour commander le ventilateur (16) du dispositif formant hotte aspirante (1) et pour faire fonctionner le dispositif formant hotte aspirante (1) dans un mode de fonctionnement normal,
    dans lequel le dispositif formant hotte aspirante (1) est conçu sans dispositif destiné à la production d'énergie thermique,
    caractérisé en ce que
    l'unité de commande est configurée pour mettre en oeuvre le procédé selon la revendication 1, dans lequel le dispositif formant hotte aspirante (1) peut fonctionner dans un mode de fonctionnement de séchage,
    dans lequel le flux d'air est plus élevé en mode de fonctionnement normal qu'en mode de fonctionnement de séchage.
  10. Dispositif formant hotte aspirante (1) selon la revendication précédente, dans lequel
    le filtre à sorption (14) est conçu, au moins partiellement, de préférence entièrement, sous forme de filtre à charbon actif (14).
  11. Dispositif formant hotte aspirante (1) selon l'une des deux revendications précédentes, dans lequel
    au moins un capteur extérieur (17) qui est configuré pour détecter l'humidité de l'air à l'extérieur du canal d'écoulement (11).
EP18204835.5A 2017-11-24 2018-11-07 Dispositif formant hotte aspirante et son procédé de fonctionnement Active EP3489585B1 (fr)

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DE102018117109A1 (de) * 2018-07-16 2020-01-16 Miele & Cie. Kg Dunstabzugsvorrichtung für ein in ein Möbel einbaubares Kochfeld, Verfahren zum Betreiben der Dunstabzugsvorrichtung und Möbel mit Kochfeld und mit Dunstabzugsvorrichtung
CN113446695A (zh) * 2021-07-30 2021-09-28 安徽铂悦厨业有限公司 一种新型厨房空间消毒灭菌机
DE102021120729A1 (de) 2021-08-10 2023-02-16 Miele & Cie. Kg Verfahren zum Betreiben einer Dunstabzugshaube, Steuervorrichtung und Dunstabzugshaube

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DE3039246A1 (de) * 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
DE8027742U1 (de) * 1980-10-17 1985-04-18 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
DE3129848A1 (de) * 1981-07-29 1983-02-17 Bergwerksverband Gmbh, 4300 Essen Verfahren zum trocknen feuchter gase, insbesondere luft
DE3739145A1 (de) * 1987-11-04 1989-05-24 Geu Ges Fuer En Und Umweltbera Verfahren und vorrichtung zur entfeuchtung von raeumen, insbesondere von wohnraeumen
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DE10215382A1 (de) * 2002-04-08 2003-10-16 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Abführen von Luft an einer Kochstelle
DE10259345A1 (de) * 2002-12-18 2004-07-08 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zum Abführen von Luft an einer Kochstelle
DE102004034871A1 (de) * 2004-07-19 2006-02-16 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zur Belüftung einer Kochstelle
DE102004055944A1 (de) * 2004-11-19 2006-05-24 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zur Belüftung einer Kochfläche
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Publication number Publication date
EP3489585C0 (fr) 2024-12-04
EP3489585A1 (fr) 2019-05-29
ES3023756T3 (en) 2025-06-03
DE102017127783A1 (de) 2019-05-29

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