BE1029968B1 - Vapor extraction device and method of operation - Google Patents

Abstract

Vapor extraction device (1) comprising a housing device (2), a vapor screen device (3) with a suction opening (4) and a blower device (5) in operative connection with the suction opening (4). The vapor deflector device (3) can be displaced between a lower end position (7) and an upper end position (8) by means of a displacement device (6), the vapor deflector device (3) in the lower end position (7) being essentially inside the housing device (2). and wherein the canopy device (4) is arranged in the upper end position (8) at least in sections outside the housing device (2). The displacement device (6) also includes a motor device (9), the motor device (9) including an integrated limit switch (10) for the lower end position (7) and an integrated limit switch (11) for the upper end position (8). In the method for operating such an extractor device (1), the vapor deflector device (3) is shifted from the lower end position (7) to the upper end position (8) by means of the shifting device (6) when the extractor hood (1) is switched on and when the extractor hood is switched off (1) from the upper end position (8) to a lower end position (7). The lower end position (7) is specified by the limit switch (10) and the upper end position (8) by the upper limit switch (11).

Description

Description "Vapor extraction device and method of operation"

The present invention relates to an extractor device, in particular one

Downdraft fan comprising at least one housing means, at least one

Vapor canopy device with at least one suction opening and at least one

Fan device in operative connection with the suction opening. Here is the

Canopy device by means of at least one displacement device at least between a lower end position and an upper end position displaceable, wherein the

Vapor canopy device in the lower end position essentially within the

Housing device is arranged and wherein the canopy device in the upper

End position is at least partially arranged outside of the housing means. The present invention also relates to a method for operating such

extractor device.

Extractor hoods are often installed above or around a hob to extract the fatty vapors that rise during cooking and such

To avoid contamination of the kitchen elements and an unpleasant odor development. For this purpose, the fatty vapors and the air that rise above a hob are typically sucked into an intake section by at least one fan, freed of fatty components and, depending on the design, also of moisture and/or odors and then, depending on the design of the extractor hood, fed to a circulating air and /or

Supplied exhaust air operation.

Extractor hoods arranged around a hob are also called downdraft fans, not above a hob. Downdraft fans are generally used when there is no installation space above the hob or optical considerations speak against such an installation.

In order to achieve the most effective possible extraction of the fumes from a downdraft fan, these often have at least one moveable fume screen that can be moved during operation of the

Downdraft fan can be extended upwards so that the intake opening to the

Increased extraction of vapors is provided. If the extractor hood or the

If a downdraft fan is not used, the canopy is then usually turned into a

Shifted rest position, in which the canopy is usually not present or not significantly above the worktop or hob.

EP 2 888 533, for example, discloses an extractor hood which has an automatically movable fume hood and in which two switches are provided which switch off a motor used for the movement when the fume hood is in a predetermined position

reached positions. For this purpose, the switches are accommodated on the housing of the extractor hood s and are actuated by switching levers which are attached to the canopy. When the vapor deflector is extended or retracted, a switching lever actuates the corresponding switch for an extended or retracted position of the vapor deflector and thus switches off the motor. In principle, such systems function reliably. The disadvantage here, however, is the relatively high design effort.

It is therefore the object of the present invention to provide an extractor hood with a displaceable vapor screen, in which reliable and safe operation is ensured with less structural complexity.

This problem is solved by an extractor device with the features of

Claim 1 and by a method for operating an extractor device with the ı5 features of claim 7. Preferred developments of the invention are the subject of

dependent claims. Further advantages and features of the invention result from the

exemplary embodiments.

The extractor device according to the invention is designed in particular as a downdraft fan and comprises at least one housing device, at least one

Vapor canopy device with at least one suction opening and at least one

Fan device in operative connection with the suction opening. Here is the

Canopy device by means of at least one displacement device at least between a lower end position and an upper end position displaceable, wherein the

Vapor canopy device in the lower end position essentially within the

Housing device is arranged and wherein the canopy device in the upper

End position is at least partially arranged outside of the housing means. The displacement device includes at least one motor device, wherein the

Motor device comprises at least one integrated limit switch for the lower end position and at least one integrated limit switch for the upper end position.

The lower end position is in particular the rest position or a rest position

Vapor deflector device, especially when the extractor hood is switched off. In this position, depending on the configuration, the vapor deflector device is preferably completely accommodated in the housing device, so that it cannot be seen.

The upper end position is in particular one or the operating position in which, for example, in the case of an extractor device designed as a downdraft fan, the

Vapor canopy device is extended upwards, so that the suction opening is arranged higher than in the rest position and in particular so far up that rising vapors can be sucked off in a suitable manner from standing on a cooktop cookware.

The integrated limit switches for the lower end position and the upper end position can preferably be provided as separate or as two separate limit switches. Depending on the configuration, the two limit switches can preferably also be provided in one assembly and

In particular, be provided by a limit switch, the at least two

Can define stop points.

The travel distance between the end positions is preferably determined or specified by the specification of the motor used. Depending on the motor used, a certain maximum distance between the upper end position and the lower end position can be achieved by the

engine can be realized. The end positions themselves are then integrated by the respective

Limit switch detected or specified.

Preferably, the position of the vapor deflector device is detected, if such a device is provided, as a rule or during normal operation over a period of time. Here is the

Displacement speed known with the motor device, so that on the one hand the position of the vapor deflector device can be deduced over the course of time.

In addition, depending on the configuration, the time profile can preferably also be converted into a distance, so that the distance covered by the vapor deflector device is also known or can be calculated.

Any suitable electric motor can preferably be used as the motor device.

For example, a normal DC motor can be used, the running direction of which is set by an appropriate polarity, or a stepper motor or the like.

The extractor device according to the invention offers many advantages. A significant advantage is that the mechanical limit switches otherwise provided in the device or on the

Housing device or on the canopy device omitted, since integrated limit switch

To be used in the motor device. Thus, a reliable method of

Vapor canopy device between the upper and lower end position are made possible without a sometimes considerable installation effort is necessary to position the otherwise usual additional mechanical limit switches in the device or on the canopy.

The limit switches are preferably designed mechanically and/or electrically. This results in the advantages of mechanical and electrical limit switches as well as in others

use cases. An advantage of mechanical limit switches is that the end points in the

Usually cannot be lost even in the event of a longer power failure. The advantage of s electrical limit switches is that the end points can be reached directly on the

Limit switches can be readjusted, for example, via a remote control.

At least one control device is particularly preferably provided. Here this one stands

The control device is preferably operatively connected to the motor device and can preferably be comprised by the displacement device or can also be designed separately. Such a control device can, for example, by a printed circuit board

Control electronics are made available, which on the one hand provides a supply of electricity, but on the other hand also a control or regulation of the

Motor device can make, for example, via pulse width modulation (PWM).

In particular, the control device checks setpoint and actual values and controls the motor accordingly.

In advantageous configurations, the control device and/or the motor device is suitable and designed to displace the vapor deflector device between the lower end position and the upper end position at different speeds. It is particularly preferred that a suitability or training is provided to the effect that a lower

Speed to the end positions can be provided. An adaptation of

Speed can be adjusted in particular by pulse width adjustment (PWA). Adjusting the speed, especially towards the end positions, can vary depending on

Configuration be advantageous. In order to reach the upper end position in particular, the extension speed of the vapor deflector device can be slowed down for optical reasons, so that the vapor deflector device stops in an appealing manner. For example, it can be provided that the speed is reduced for the last 4 seconds. Other times can also be appropriately provided here. In particular, when retracting the canopy can also from a certain distance to the

The rest position or the lower end position, the speed can be reduced in order to ensure a particularly safe operation of the extractor device. For example, the retraction can be slowed down if the distance of the

vapor deflector device to the lower end position is only 80 mm. Depending on

Configuration, other distances can be provided.

The control device and/or the motor device is/are preferably suitable and designed to detect at least one misalignment of the vapor deflector device. A misalignment of the vapor deflector device is in particular a stopped position of the

Vapor deflector device outside the end positions. Such an erroneous stopping position can arise, for example, as a result of an error or also as a result of a power failure.

If such a malfunction or an error or misalignment is detected, the extension and/or retraction of the vapor deflector device stops for safety reasons.

If, for example, the extractor hood is then operated again, for example if the blower level is changed or if the status of a

Lighting, it always comes out in advantageous embodiments

Canopy device, independent of the previous direction of travel. So preferably 100 a safety function is provided that a particularly safe operation of

Extractor device guaranteed. If the vapor deflector device fails when the

error or when the incorrect position is reached, operation can continue normally or at a safety-relevant reduced speed of e.g. B. less than 15 mm / s further out. If the hood has reached an incorrect position when it is retracted, the vapor deflector device is preferably first fully extended again, ie up to the upper end position. This extension also preferably takes place at a safety-relevant reduced speed. Then the

Vapor deflector device retracted again and preferably in regular operation.

The control device and/or the motor device is particularly preferably suitable for this

And trained to recognize at least one termination criterion and to shift the

to stop the vapor deflector device. A termination criterion is reached in particular when at least one value of an electrical variable of the motor device exceeds a predetermined

Above and/or below setpoint. In particular, a permanent

Current monitoring provided, which, for example, a bruise when retracting the

Canopy device or placing objects or supporting the user detects. If, for example, the current increases when it is extended, it can be concluded that a resistance is preventing the vapor deflector device from being extended. This can for example by a launched object or by the

Result user who is supported on the vapor screen device. A reduction of

Current can indicate missing components and a defect. No current flow suggests that the vapor deflector device is in an end position.

If a limit value is exceeded and thus a termination criterion is determined or recognized, the movement of the screen is preferably interrupted. Preferably, the moves

Then move the canopy a little bit in the opposite direction.

As a precaution, depending on the configuration, a travel speed of less than 15 mm/s can then preferably be provided. Does the selected state fit after an error or

a termination criterion does not correspond to the state of the vapor deflector device, a new synchronization can take place through the renewed selection by the user. The

The current is monitored in particular via safety-relevant software. Such software can preferably be integrated in a separate controller and in a separate controller part. In particular, if an error occurs in a chip, no further method is possible.

The method according to the invention for operating an extractor device is particularly suitable for operating a downdraft fan. In particular, one

Vapor extraction device are operated as previously described. The

Vapor screen device when you turn on the fume hood by means of a

Shifting device shifted from a lower end position upper end position, wherein the

Vapor screen device when switching off the extractor device using the

Shifting device is shifted from an upper end position to a lower end position. The lower end position is specified by at least one limit switch ı5 integrated in the motor device and the upper end position is specified by at least one limit switch integrated in the motor device.

Switching on the extractor hood is made possible in particular by changing the

Blower stage and/or the lighting has been switched on. Turning off the

Fume extraction device is effected in particular by the fact that the blower stage and and/or the lighting, depending on what was switched on before, is switched off. As soon as an end position is reached, the motor is preferably switched off.

The method according to the invention also offers the advantages that have already been described above for the extractor device according to the invention.

At least one control device is preferably provided, which monitors at least one electrical variable of the motor device. In particular, the current strength is monitored, with this being checked in particular continuously and preferably permanently.

Preferably, at least one control loop is provided, which checks whether a predetermined current is applied to the motor device or whether, for example, by a

Errors or incorrect operation different currents are present. The monitoring is preferably carried out by safety-related software, which can be integrated in particular into the displacement device or can also be provided externally or separately.

At least one control device is particularly preferably provided which at least

Travel time between the end positions monitored. The provided here

Control device can be a separate control device or the control device that has been described above. The travel time between the end positions is preferably known, so that the position of the vapor deflector device can be determined over the course of engine operation over time. Since the travel time is known, this can preferably also be converted into a distance between the end positions. So preferably one

Change in speed at a certain time before an end position or from a certain difference to an end position. Here, too, control loops can be provided which, by monitoring the travel time, can infer normal operation or faulty operation.

In expedient developments, the displacement speed is

Canopy device changed to at least one end position. Change is to be understood as meaning in particular adapting. For example, when extending a short time before reaching the end position, for example 4 seconds before, a slower

Shift speed are provided. This can in particular from optical

reasons and provide a so-called comfort function. In this way, ı5 it is achieved that a particularly harmonious extension with a slower running-in into the upper end position is made possible. When retracting, for example, from a distance of 80 mm before reaching the lower end position, the speed can be reduced to a safety-relevant level

Speed of less than 15 mm/s can be reduced to ensure a particularly safe

to ensure the operation of the vapor extraction system. In doing so, changing the

Speed of the vapor shield device or the displacement speed can be achieved in particular by pulse width modulation of the motor device.

The vapor deflector device is preferably stopped when at least one value of an electrical variable of the motor device meets at least one termination criterion. A

Abort criterion is met in particular when a determined value or a measured

Value above and/or below a predetermined value. For example, the

Current is exceeded or fallen below or a predetermined time up to

Reaching an end position are exceeded in particular. With an increase in the

Current strength can be deduced from a resistance, which is increased to an

Effort of the motor device to extend the vapor deflector device can be closed. A reduction in the amperage can indicate missing component defects or the like. No current flow suggests that the vapor deflector device is probably staying in an end position.

The vapor deflector device particularly preferably retracts after stopping

Abort criterion back a predetermined distance in the opposite direction. When the vapor deflector device is retracted, back means that it moves back in the direction of the upper end position. When you extend the canopy means back that the

Vapor deflector device after stopping a piece back towards the lower end position.

In expedient developments, the position of the vapor deflector device is checked for a misalignment. It can preferably z. B. before the procedure of

Canopy device to be checked whether the canopy device is actually in an end position. If the canopy device is not in an end position, one is

misalignment detected. A misalignment can also be detected or is present when the vapor deflector device stops without being in an end position. This can happen in particular due to a power failure or an error.

The setting of the vapor deflector device is preferably compared with the actual state, with synchronization possibly being carried out by a renewed selection of settings by the user if the set parameters of the

Vapor deflector device does not match the actual condition. ı5 The vapor deflector device is preferably shifted to the upper end position after detecting a misalignment. This is preferably independent of the direction in which the vapor deflector device has previously moved. If the incorrect position is reached during operation of the extractor hood or when raising the vapor deflector device, operation can usually be continued normally as soon as the vapor deflector device is in the upper end position. Even if the canopy device when you turn off the

extractor hood or when retracting the fume hood device is in an incorrect position, the upper end position is automatically approached first.

The shifting to the upper end position takes place particularly preferably after the detection of a

Malposition at reduced speed. Preferably, a safety-related

speed of less than 15 mm/s.

The vapor deflector device is particularly preferred after the upper one has been reached

End position shifted to the lower end position and optionally switched off. This is the case in particular if a misalignment was achieved or detected when retracting the vapor deflector. Depending on the configuration, but also after the complete extension of the

Vapor canopy device the vapor canopy device can also be moved back to the lower end position and the extractor hood can then be configured so that a

user has to restart the extractor hood if necessary.

Further advantages and features of the present invention result from the

Embodiments, which are explained below with reference to the accompanying figures.

The figures show: FIG. 1 a purely schematic representation of an exemplary embodiment of a vapor extraction device according to the invention in a perspective view;

FIG. 2 shows two purely schematic representations of an exemplary embodiment of a vapor extraction device according to the invention in sectional views from the front;

FIG. 3 shows a purely schematic operating diagram of an exemplary embodiment of a vapor extraction device according to the invention; and

Figure 4 shows a continuation of the operating scheme according to Figure 3.

In Figure 1, a vapor extraction device 1 or

Extractor hood shown, which is designed here as a downdraft fan 100. Here is the

Extractor device 1 or the downdraft fan 100 in the embodiment shown here ı5 provided behind a hob 200, wherein the extractor device 1 comprises a housing device 2, which here essentially within a

Furniture body 300 is provided.

In addition to the housing device 2 , the extractor device 1 comprises a

Vapor screen device 3, which is provided to be movable or displaceable for optimal extraction of vapors. A suction opening 4 is provided on the canopy device 3, through which, by means of a blower device 5, ascending vapours flow into the

Extractor device 1 can be sucked. When switched off

Fume extraction device 1, the fume hood device 3 is provided in a lower end position 8, in which the fume hood device 3 is in the one shown here

Embodiment is located entirely in the housing means 2. Then the

Extractor device 1 flush with the hob 200 or depending on

Version with worktop 400.

The fan device 5 is arranged within the housing device 2 and is in

Active connection to the suction opening 4 of the vapor screen device 3. Depending on

The air can be carried away as recirculation mode and/or as exhaust air mode, with an air hose 18 being provided in the exemplary embodiment shown here, which removes the vapors cleaned within the extractor device 1 from the kitchen in an exhaust air mode.

To operate the fume extraction device 1 is here on the fume hood device 3 a

Operating device 16 is provided, via which, in the exemplary embodiment shown, the vapor extractor device 1 can be switched on and off. To turn on the

Vapor extraction device 1 can, for example, a certain fan speed

Blower device 5 can be selected or only the lighting device 17 can be switched on.

FIG. 2 shows, purely schematically, two frontal sectional views of a further exemplary embodiment of a vapor extraction device 1 or a

Downdraft fan 100 shown purely schematically. The canopy device 3 is in the lower end position 7 in the left figure and in the upper end position in the right figure

End position 8. The canopy device 3 is here in the lower end position 7 in a

Rest position 19 and in the upper end position 8 in an operating position 20.

In order to move the vapor deflector device 3 between the lower end position 7 and the upper end position 8 and vice versa, in the exemplary embodiment shown here, a

Displacement device 6 is provided, which comprises a motor device 9 . by means of

Motor device 9 can deflector device 3 in the one shown here

Embodiment a defined distance between the lower end position 7 and the upper

End position 8 are relocated.

In order to reach defined end positions 7, 8, the motor device 9 according to the invention comprises an integrated limit switch 10, which determines the lower end position 7 and an integrated

Limit switch 11, which defines the upper end position. In the embodiment shown here, two separate limit switches 10, 11 are provided. Depending on the version, the

Limit switch can also be provided in an assembly or as a single limit switch, which can define at least two end positions.

Furthermore, a control device 12 is provided, which is shown here in the

Embodiment continuously checks the engine device 9, so as to a correct

Functionality of the extractor device 1 to close. This is shown in the here

Embodiment continuously monitors the applied current or the current required.

In Figure 3, a scheme is shown purely schematically, such as the invention

Vapor extraction device 1 can be operated. When you turn on the

Vapor extraction device 1, for example by selecting a blower level or by switching on the lighting device 17 by means of the control device 12, first checks whether the vapor deflector device 3 is in one of the end positions 7, 8. If this is not the case, an incorrect position 13 is detected by means of the control device 12 . s A misalignment 13 of the canopy device 3 can not only turn on the

Extractor device 1 are recognized, but also during operation. Here one can

Misalignment can then be detected when the canopy device 3 is not faulty in one

End position 7, 8, but comes to a standstill in an intermediate position. This can happen, for example, if there is a power failure or a network interruption.

After recognizing a misalignment 13 of the canopy device 3, it comes to

Passing through an error loop, which is described in detail in FIG.

If the vapor deflector device is in the lower end position 7 or in the upper end position 8, the normal operation of the extractor device 1 or the switching on and off of this can be carried out.

If the control device 12 recognizes that the canopy device 3 is in the lower end position 7 and the extractor device is switched on, the

Vapor deflector device 3 moved by means of the motor device 9.

For this purpose, the motor device in the exemplary embodiment shown here is operated at 100% power, so that the motor device 9 has a power predetermined by the motor

Displacement speed the vapor deflector device 3 from the lower end position 7 in

Moved towards the upper end position 8.

During the process or the displacement of the vapor shield device 3 is a

Control circuit continuously checked by the control device 12 in the exemplary embodiment shown here whether the extractor device 1 is functioning correctly.

For this purpose, it is checked whether certain target values of the extractor hood 1 or the

Motor device 9 are present or whether the actual value deviates from it. In the exemplary embodiment shown here, the current strength of the motor device 9 is checked in order to check whether a predetermined setpoint value is being maintained or is being exceeded or fallen below. The current intensities may fall below the target value, for example, because certain components of the vapor deflector device 3 have been removed, so that the vapor deflector device is lighter and can be extended more quickly. In addition, the remaining running time RZ is also checked in order to check whether the vapor deflector device has been extended sufficiently quickly. For example, if the current is 0 mA, it can be assumed that the vapor deflector device 3 is in an end position 7, 8 or that there is no current at the motor device 9. If the setpoint values do not match the actual values, a termination criterion 14 is recognized. The further procedure after a

Abort criterion 14 is explained in more detail in FIG.

In the embodiment shown, during the process of

Vapor deflector device 3 checks how far this has already moved. through the

Specification of the motor device 9 used is known as the period of time

Motor device 9 required to shift the canopy device 3 from the lower end position 7 to the upper end position 8 and vice versa. This can also be used to draw conclusions about the distance or it can be converted into the distance.

Thus, at the end of the shift or towards the end position 8, the speed or the

Shift speed can be adjusted. This has shown in the one here

Embodiment purely optical reasons or provides a so-called comfort function

Available, by means of which is achieved that a particularly appealing method of

Vapor screen device 3 is provided. So the canopy device 3 on the

Most of the route in the maximum speed method, with the

Canopy device 3 towards the upper end position 18 is slower, so that the

Vapor deflector device 3 does not stop too abruptly when the upper end position 8 is reached.

For this purpose, with a remaining time RZ towards the upper end position 8 of approx. 4

Seconds, the engine device 9 is only operated at 70% of the power, so that a slower process is achieved. Other services can also be used as required. Even during the process at reduced speed, a continuous check is carried out here to determine whether an abort criterion 14 is present.

If the upper end position 8 is reached, which is detected by the integrated limit switch 11, the motor device is switched off again.

Further to the right in the process diagram is shown what happens when the

Vapor canopy device is in the upper end position 8 and the extractor hood 1 is switched off. This can take place in that the lighting device 13 is switched off and/or the blower device 5 is switched off.

In this case, the motor device 9 in the exemplary embodiment shown here is again operated at 100% power, so that the vapor deflector device 3 is shifted from the upper end position 8 to the lower end position 7 at maximum speed.

Here again the traversed route or the position of the

Vapor canopy device 3 checked between the upper end position 8 and the lower end position 7, so that in the embodiment shown from a distance or a

Distance to go RW of about 80 millimeters to the lower end position 7, the displacement speed can be adjusted. In this case, less than 15 mm/s is set as the reduced speed G, so that the last 80 mm of the displacement path of the vapor deflector device 3 are carried out at a safety-relevant speed.

Here too, as when the vapor deflector device is extended, it is checked whether certain

Target values of the motor device 9 match the actual values. Should not

If this is the case, a termination criterion 15 is recognized.

FIG. 4 shows, purely schematically, which method steps are provided when a faulty position 13 or a termination criterion 14 or a termination criterion 15 is detected.

If a misalignment 13 is detected, it is first checked whether the extractor hood 1 or the blower device 5 or the blower device 5 or the lighting device 17 are switched on or off.

Then, as soon as this is possible again, the vapor deflector device 3 is moved to the upper end position 8 at a safety-relevant speed of less than 15 mm/s, regardless of the previous state of the vapor extraction device 1 .

The canopy device 3 is then either shifted to the lower end position 7 in all cases during normal operation, or a status check is carried out to find out whether the

extractor device is actually switched on or off.

Here it is preferably a review of the current state of the

Vapor extraction device 1 or the vapor screen device 3 and the set

Parameter. If these fall apart, it may be necessary or provided, depending on the configuration, for a user to carry out synchronization by making a new selection, so that the setpoint values again match the actual values.

When a termination criterion 14 or a termination criterion 15 is recognized, the control loop that is provided for an incorrect position 13 also occurs. To do this, the

The canopy device 3 described above is first shifted to the upper end position 8, with a safety-relevant speed of less than 15 mm/s being maintained here as well.

Depending on the version, however, before extending the canopy device 3 in the upper

End position 8 another step can be provided. It is provided in the embodiment shown that upon detection of a termination criterion 14 and upon detection of a

Termination criterion 15, the canopy device 3 is first stopped.

In the case of termination criterion 14, which takes effect when the vapor deflector device 3 is extended from the lower end position to the upper end position 8, it is provided that the vapor deflector device 3 moves back a predetermined distance, ie in the direction of the lower

End position 7 is moved. A distance of a few millimeters to a few

centimeters be provided. In the embodiment shown, 3 mm are provided.

At termination criterion 15, which takes effect when the vapor deflector device 8 is displaced from the upper end position 8 to the lower end position 7, the vapor deflector device is extended again a predetermined distance in the opposite direction.

LIST OF REFERENCE NUMERALS BE2021/5926 1 extractor device 2 housing device 3 vapor screen device 4 intake opening 5 blower device 6 displacement device 7 lower end position 0 8 upper end position 9 motor device

Limit switch 11 Limit switch 12 Control device 13 Faulty position 14 Abort criterion 15 _ Abort criterion 16 Operating device 17 Lighting device 18 Air hose 19 Rest position 20 Operating position

RZ remaining time

RW distance to go

G speed 100 downdraft fan 200 hob 300 furniture body 400 worktop

Claims (15)

patent claims 1. Vapor extraction device (1), in particular downdraft fan (100), comprising at least one housing device (2), at least one vapor screen device (3) with at least one suction opening (4) and at least one blower device (5) in operative connection with the suction opening (4), wherein the vapor deflector device (3) can be displaced at least between a lower end position (7) and an upper end position (8) by means of at least one displacement device (6), the vapor deflector device (3) in the lower end position (7) being essentially within the housing device ( 2) and wherein the vapor deflector device (4) is arranged in the upper end position (8) at least in sections outside the housing device (2), characterized in that the displacement device (6) comprises at least one motor device (9), the motor device ( 9) comprises at least one integrated limit switch (10) for the lower end position (7) and at least one integrated limit switch (11) for the upper end position (8). 2. Extractor device (1) according to one of the preceding claims, characterized in that at least one control device (12) is provided. 3. Vapor extraction device (1) according to one of the preceding claims, characterized in that the control device (12) and/or the motor device (11) is suitable and designed to move the vapor deflector device (3) at different speeds between the lower end position (7) and to shift to the upper end position (8). 4. Extractor device (1) according to one of the preceding claims, characterized in that the control device (12) and/or the motor device (9) is suitable and designed to detect at least one misalignment (13) of the fume hood. 5. Vapor extraction device (1) according to one of the preceding claims, characterized in that the control device (12) and/or the motor device (9) is suitable and designed to recognize at least one termination criterion (14, 15) and the displacement of the vapor deflector device (3) to stop. 6. A method for operating an extractor device (1), in particular a downdraft fan (100) according to any one of the preceding claims, wherein a vapor shield device (3) when switching on the extractor hood (1) by means of a Shifting device (6) is shifted from a lower end position (7) to an upper end position (8), the vapor shield device (3) being shifted from an upper end position (8) to a lower end position when the extractor hood (1) is switched off by means of the shifting device (6). (7) is shifted, characterized in that the lower end position (7) is specified by at least one limit switch (10) integrated in the motor device (9) and in that the upper end position (8) by at least one integrated in the motor device (9). Limit switch (11) is specified. 7. The method according to the preceding claim, characterized in that at least one control device (12) is provided, which monitors at least one electrical variable of the motor device (9). 8. The method according to any one of the two preceding claims, characterized in that at least one control device (12) is provided which monitors at least the travel time between the end positions (7, 8). 9. The method according to any one of the three preceding claims, characterized in that the displacement speed of the canopy device is changed towards at least one end position (7, 8). 10. The method according to any one of the four preceding claims, characterized in that the vapor deflector device (3) is stopped when at least one value of an electrical variable of the motor device (9) meets at least one termination criterion (14, 15). 11. The method according to any one of the five preceding claims, characterized in that the vapor shield device (3) moves back a predetermined distance in the opposite direction after stopping. 12. The method according to any one of the six preceding claims, characterized in that the position of the canopy device (3) is checked for a misalignment (13). 13. The method according to the preceding claim, characterized in that the vapor deflector device (3) is shifted to the upper end position (8) after detecting a faulty position (13). 14. Method according to the preceding claim, characterized in that the shifting into the upper end position (8) takes place at a reduced speed after a faulty position (13) has been detected. 15. The method according to any one of the two preceding claims, characterized in that the vapor shield device (3) after reaching the upper end position (8) in the lower end position (7) is shifted and optionally switched off.