DE102020114719A1 - Cooking steam outlet - Google Patents

Abstract

The invention relates to a cooking steam extractor with a hob (1), a cooking steam inlet (3) being arranged centrally in the hob (1), the cooking steam inlet (3) opening into a suction chamber (17), the suction chamber (17) being a vacuum source (9), wherein the negative pressure source (9) has a first air outlet (11.1), which in turn opens into a first exhaust chamber (13.1), the first exhaust chamber (13.1) in turn comprising a first air ejection slot (5), the first air ejection slot (5) is embedded in a first edge (18) of the hob (1) and a first air guiding unit (26) and / or a second air guiding unit (27) is provided for the targeted division of the blown air in order to divide part of the blown air into Direction to direct the Kochwraseneinzug (3), and to guide part of the blown air away from the Kochwraseneinzug (3).

Description

Technical area

The invention relates to a cooking steam extractor according to the preamble of claim 1.

State of the art

Such cooked vapors are already known and used in a wide variety of forms and designs.

For example, in the DE 20 2018 105 372 U1 discloses a device for suction extraction from an exhaust air generated on a hob. In the center there is a round suction device with a centrally arranged exhaust air inlet opening and a spiral fan housing. In this case, the spiral-shaped fan housing is provided with a motor-driven radial fan which is arranged on a bottom wall of the fan housing and whose impeller carries a large number of evenly spaced impeller blades.

Object of the invention

The object of the present invention is to provide a cooking steam extractor which meets the modern demands on design and usability and at the same time meets all the necessary technical requirements and can be easily integrated into existing base units, for example.

Solution of the task

The features according to claim 1 lead to the solution of the problem.

Advantageous refinements are described in the subclaims.

A cooking vapors extractor according to the invention has a hob. This hob in turn contains a certain number of hotplates, which in turn are designed as part of the hob and now regularly represent a ceramic hob, with the heating of the dishes in which vapors are generated by induction. Additionally or alternatively, gas flames or other types of cooktops are of course also possible.

In the exemplary embodiment described, a cooking vaporizer intake is arranged centrally in the hob. This ensures that the vapor air that can arise through all of the hobs can be extracted in a simple manner. A number of hotplates or just one hotplate can be arranged on the one hand along the longitudinal extension of the cooking vapors and on the other hand a further number of further hotplates or just one further hotplate can be arranged along the longitudinal extension of the hot water inlet.

In particular, the cooking vapors intake should open into a suction chamber. The suction chamber is arranged below the hob. When used as intended, the cooking pots or pans to be heated are placed above the hob. Accordingly, below the hob is the opposite of that above.

The suction chamber includes a vacuum source. This in turn means that at least part of the vacuum source is arranged in the suction chamber. The part of the vacuum source is a vacuum feeder. The vacuum source has the vacuum intake. The vacuum source in turn either comprises a filter or conducts the vapor air away via a corresponding line or to the outside. In the same context, either the filtered air or fresh air drawn from the outside is fed into the negative pressure source from the outside.

The vacuum source can have a number of air outlets. According to the invention, the vacuum source has a first air outlet, which in turn opens into a first blow-out chamber, the first blow-out chamber in turn comprising a first air ejection slot, the first air ejection slot being let into a first edge of the hob.

In a further preferred embodiment, the vacuum source has a second air outlet, which in turn opens into a second blow-out chamber, the second blow-out chamber in turn comprising a second air ejection slot, the second air ejection slot being let into a second edge of the hob.

An air guiding unit is provided in or on the air ejection slot (s) for the targeted division of the blown air. The air guiding unit serves to guide part of the blown air towards the cooking vaporizer inlet and to guide part of the blown air away from the cooking vaporizer intake.

Preferably, all of the air to be blown out is therefore directed to the air ejection slot (s), and the air or air flow is only divided up by the air guiding unit (s) located there. By dividing the air and directing it as described above, an air flow that is as uniform as possible without undesired turbulence can be generated in the area of the cooking vapors. Here must be observed that the portion of the blown air which leaves the air guiding unit (s) and is directed towards the cooking vapors affects the air flow that enters the intake opening. The division of the air, i.e. the selection of how large that part of the blown air is which is directed to the cooking vapors intake, can be made with regard to the specific conditions on the hob, after preliminary tests with substances to make the air flows visible, after other preliminary tests or in a similar way to be hit.

The air guiding unit (s) is / are equipped with known means for guiding the air, it being possible, for example, to think of movable baffles and the like that can be controlled in this movement.

The hob can have an air guide unit with a fixed air distribution ratio. This air guide unit can be set up to guide a maximum of 50%, preferably a maximum of 40%, more preferably a maximum of 30%, more preferably a maximum of 20% of the blown air in the direction of the cooking vapors. In this exemplary embodiment, the air distribution ratio is fixed, that is to say invariable. The air guiding unit (s) is / are preferably removable, for example for cleaning.

In the alternative embodiment with an adjustable air distribution ratio, the air guiding unit can be set up to guide a maximum of 50%, preferably a maximum of 40%, more preferably a maximum of 30%, more preferably a maximum of 20% of the blown air in the direction of the cooked vapors. In this variant of the alternative embodiment described above, the air distribution ratio is variable, but cannot be selected at will. By directing a maximum of 50% or an even smaller proportion of the air to the cooking vapors intake, it is ensured that no undesirable turbulence occurs in the area of the cooking vapors that would prevent the cooking vapors from being sucked in efficiently. This is based on the surprising finding that a complete return of the cleaned cooking vapors in the direction of the intake opening leads to turbulence which massively impair the efficiency of the intake. The same also applies if at least a substantial part, i.e. for example well over 50% of the cleaned cooking vapors, is directed towards the intake opening. Inefficient suction leads to undesirable odors in the kitchen.

In all of the aforementioned exemplary embodiments, the air guiding unit can be reversibly extendable and retractable. When retracted, the air guide unit is optically hidden and does not take up any space that is required for cooking preparation, for example. Furthermore, if the hob is not used for a long period of time, the air guiding unit is protected from soiling and dust as well as from damage. The retraction and extension can also serve to vary the air distribution ratio, which is described in more detail below.

An extension height of the extendable and retractable air guiding unit can define the air distribution ratio. The air distribution ratio here preferably relates to the proportions of the air which leave the exhaust opening and are either directed towards or away from the intake opening. If the extension height determines the air distribution ratio, the user can easily estimate from the extension height how the air distribution ratio is set. The extension height gives the user immediate feedback on the selected setting without the need for a display or the like.

It can also be thought of manually adjusting the air guiding unit. In this case, an inconspicuous scale can be attached to the air guide unit, on which the user can read off the air distribution conditions directly.

According to one exemplary embodiment, the hob can comprise at least two air guiding units which can be reversibly inserted into the same air ejection slot and each cause different air distribution conditions. The embodiments with variable and invariable air distribution ratio described above preferably each comprise only one air guiding unit for each air ejection slot, the air guiding unit in each case having either a fixed or a changeable air distribution ratio. In comparison, the embodiment with several exchangeable air guiding units that can be inserted into the same blow-out opening relates to a third variant in which the air distribution ratio is selected by selecting the appropriate air guiding unit. Another advantage of such a variant is its simplicity. It can be changed by hand without any problems, the currently selected air distribution ratio is then also immediately visible.

Due to the fact that some of the cooking vapors are discharged via the cooking vapors intake into the suction chamber, and then into the vacuum source for filtering or replacement and then via the blow-out chamber (s). This creates a cycle that is particularly advantageous in preventing cooking vapors from escaping into the living space unintentionally.

In a preferred embodiment, the cooking vapors are designed to be linear, the cooking vapors being drawn in parallel and centered between the first, which is also linear Air ejection slot and the second linear air ejection slot is arranged. It can also be linear if there is a round or oval shape. A circular shape is also possible.

The suction chamber has a draw-in wall. This results in an encapsulation of the blow-out chamber or chambers.

The hob is embedded in a hob frame of the housing, the housing consisting of a housing base and a housing wall surrounding the housing base. The housing wall forms the hob frame on the other side of the housing base.

The hob frame in turn consists of two lateral edge edges, the two edge edges on the one hand forming a front edge and on the other hand a rear edge.

Furthermore, the first blow-out chamber has a first deflection device and the second blow-out chamber has a second deflection device. This is to prevent unwanted air congestion or turbulence.

The hob also includes a control panel. The control panel can be part of the hob as a touch user interface or it can only be functionally connected to the hob to operate individual or all hotplates.

In a preferred embodiment, the control panel is arranged between the cooked vapors and the front edge. In this way, ease of use is guaranteed.

Figure list

• 1 eine Draufscht auf ein Kochfeld;
• 2 eine erste seitliche Schnittansicht des Kochwrasenabzugs;
• 3 eine zweite seitliche Schnittansicht des Kochwrasenabzugs.

Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawings; these show in:

• 1 a top on a hob;
• 2 a first side sectional view of the cooking vapors;
• 3 a second side sectional view of the cooking vapors.

Embodiment

In 1 is a plan view of a cooking steam hood shown. There is a hob frame when viewed from above 7th shown in which a hob 1 is let in. The hob frame 7th in turn consists of a front edge 20th and a back edge 21 . The hob frame points further 7th a first marginal edge 18th and a second marginal edge 19th on.

It is easy to see that the hob 1 in the hob frame 7th of the housing 8th is recessed and the housing 8th the two side edges 18th , 19th forms, with the two marginal edges 18th , 19th on the one hand a front edge 20th and on the other hand a rear edge 21 form.

The front edge 20th , the rear edge 21 , the first marginal edge 18th and the second marginal edge 19th together form a rectangle. Here are the two edges 18th , 19th arranged parallel to each other and the front edge 20th is to the rear edge 21 also arranged in parallel.

The stove top 1 has a centrally, that is, centrally arranged, rectangular cooking vaporizer intake 3 on, the rectangular shape having two longitudinal edges 22, 22.2 and two short edges arranged at right angles thereto 23 , 23.2. the longitudinal extension of the cooked vapors mentioned in the invention 3 runs in the middle between the two long edges 23 , 23.2 of the cooking vapors 3 . The cooking vase intake 3 is in the middle of the hob 1 arranged and is centrally parallel between the first edge 18th and the second marginal edge 19th arranged. The longitudinal extension of the cooking vapors is particularly important here 3 parallel to the two marginal edges 18th , 19th arranged.

The cooking vapors are drawn in here 3 is linear, with the cooking vapors intake 3 that is, parallel and centered between the first air ejection slot, which is also linear 5 and the second linear air ejection slot 6th is arranged.

The hob points further 1 four hotplates 2 up to 2.4. Two of the four hotplates 2 , 2.3 are on the one hand the longitudinal extension of the cooking vapors 3 and two of the four hotplates 2 , 2.4 on the other hand, the longitudinal extension of the cooking vapors 3 arranged.

Consequently, on the one hand, there is the longitudinal extension of the cooking vapors 3 a number of two hotplates 2 , 2.3 and on the other hand the longitudinal extension of the cooking vapors 3 another number of two more hotplates 2 , 2.4 arranged.

The hob points further 1 a control panel 4th on. The control panel 4th is between the cooking vapors 3 and the front edge 20th is arranged. The control panel 4th various operating units for controlling the hotplates 2 up to 2.4 and / or the cooking vapors 3 .

You can also see that the hob 1 between the first marginal edge 18th and the hob 1 the continuous first air ejection slot 5 available. In addition, there is between the hob 1 and the second marginal edge 19th the second continuous air ejection slot 6th available. The two air ejection slots 5, 6 extend over the entire length of the hob 1 .

It can also be seen that in the first air ejection slot 5 a first air guide unit 26th and in the second air ejection slot 6th a second air guide unit 27 is arranged. Both air control unit 26th , 27 are shown in a retracted, inactive position. Will one or both of the air discharge slots 5 , 6th activated, they slide out of the air ejection slot 5 or the air ejection slot 6th vertically out.

In addition, in 1 a section line AA is shown. The sectional view of the section line AA is in the 2 and 3 described in more detail.

In 2 and in the 3 is a housing 8th shown in which the hob 1 is let in or put on. There you can see that the cooking vapors are being drawn in 3 into a suction chamber 17th opens, the suction chamber 17th a source of negative pressure 9 comprises, wherein the vacuum source 9 a first air outlet 11 has, which in turn in a first blow-out chamber 13th opens, the first blow-out chamber 13th turn the first air ejection slot 5 and the first air guide unit 26th wherein the first air ejection slot 5 between the first edge 18th and the hob 1 is let in.

Next, the vacuum source 9 a second air outlet 11 on, which in turn goes into a second blow-out chamber 13th opens, the second blow-out chamber 13th again a second air ejection slot 6th and the second air guide unit 27 wherein the second air ejection slot 6th between the second edge 19th and the hob 1 is let in.

The first and the second air guide unit 26th and 27 each include an axial fan 28 , whereby the conveyed air is deflected upwards via an air baffle (not shown). Instead of the axial fan shown 28 other fans can also be used. For example, radial fans can be thought of.

Here is the suction chamber 17th through an intake wall 12th from the two blow-out chambers 13th , 13.2 separately. Consequently, the suction chamber 17th an intake wall 12th on. This makes it easier to adjust the pull-in force of the vacuum source 9 and also the variation between different pull-in forces to avoid any cooking vapors that may arise in the area of the hotplates 2 up to 2.4 in the suction chamber 17th to pull.

It is also shown that the vacuum source 9 a vacuum feeder 10 having. The in the suction chamber 12th sucked vapor air 15th through the vacuum feed 10 turn into the vacuum source 9 sucked and cleaned by a filter not shown in detail, so that then through the two filter air ejects 11 , 11.2 purified air 16 , 16.2 into the blow-out chambers 13th , 13.2 are blown and from there via the air ejection slots 5 , 6th and the first and the second air guide unit 26th and 27 back to the area above the hob 1 be dismissed.

In the 2 shown and identically set first and second air guiding unit 26th and 27 ensure that a large part of the blown air comes from the center of the hob and thus also from the intake opening 3 is directed away. This is indicated by thick swirl-shaped arrows 9 in 2 indicated. The straight arrows 16 , which are oriented in the direction of the cooking vapors, symbolize the small part of the blown air that leads to the intake opening 3 is directed towards.

At the hob 1 to 3 has compared to the hob 1 to 2 only the extension height of the air control units 26th changed. In the 3 illustrated first air guide unit 26th is retracted while the second air guide unit shown opposite 27 is fully extended.

In the 3 illustrated first air control unit 26th is completely retracted for clarity, no air can be blown out through it. This is the state that prevents the air guide unit from becoming dusty and dirty when it is not in use. It can also be seen that the first air guide unit shown 26th in this position flush with the hotplates 2 or with the surface of the hob 1 concludes. This is both visually advantageous and practical for the user because no edges remain, and thus the entire hob 1 Can be used as a flat surface when not in use.

Currently at 2 and 3 is easy to recognize, like the purified or exchanged air 16 through the second air outlet 11 into the second blow-out chamber 13th and then via the second air guide unit 27 and the connected axial fan 28 and the second air ejection slot 6th is promoted back up. In the same way, the exchanged air would 16 also run on the opposite side if the first air guide unit 26th would be extended.

The terms above and below are defined as follows in this context. The area between the hob is defined as below 1 and a case back 24 lies. As is above defines the area which is relative to the hob 1 on the other hand, the case back 24 given is.

Although only a preferred exemplary embodiment of the invention has been described and illustrated, it is obvious that numerous modifications can be added by those skilled in the art without departing from the spirit and scope of the invention.

In particular, as described above, the air distribution ratio can also be achieved in a manner other than through the extension height of the air guiding units 26th and 27 to be determined.

List of reference symbols

1

Hob 34

2

Hotplate 35

3

Cooking steam intake 36

4th

Control panel 37

5

First air ejection slot 38

6th

Second air ejection slot 39

7th

Hob frame 40

8th

Housing 41

9

Vacuum source 42

10

Vacuum feeder 43

11

Air outlet 44

12th

Feed wall 45

13th

Exhaust chamber 46

14th

15th

Steam air 48

16

Air 49

17th

Suction chamber 50

18th

First marginal edge 51

19th

Second marginal edge 52

20th

Front edge 53

21

Back edge 54

22nd

Long edge 55

23

Short edge 56

24

Caseback 57

25th

Housing wall 58

26th

first air guiding unit 59

27

second air guiding unit 60

28

Axial fan 61

29

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QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202018105372 U1 [0003]

Claims (12)

Cooking vapors extractor with a hob (1), wherein a cooking vapors intake (3) is arranged centrally in the hob (1), characterized in that the cooking vapors intake (3) opens into a suction chamber (17), the suction chamber (17) being a vacuum source ( 9), the vacuum source (9) having a first air outlet (11.1) which in turn opens into a first blow-out chamber (13.1), the first blow-out chamber (13.1) in turn comprising a first air ejection slot (5), the first air ejection slot ( 5) is let into a first edge (18) of the hob (1), a first air guiding unit (26) being provided for the targeted division of the blown air in order to guide part of the blown air in the direction of the cooked vapors (3), and to direct part of the blown air away from the cooked vaporizer inlet (3). Cooked vapors after Claim 1 , characterized in that the negative pressure source (9) has a second air outlet (11.2), which in turn opens into a second blow-out chamber (13.2), the second blow-out chamber (13.2) in turn comprising a second air ejection slot (6), the second air ejection slot ( 6) is let into a second edge (19) of the hob (1). A second air guiding unit (27) is provided for the targeted division of the blown air, in order to guide part of the blown air towards the cooking vapors inlet (3), and to guide part of the blown air away from the cooking vapors inlet (3). Hob (1) Claim 1 and 2 characterized in that the first air guiding unit (26) and / or the second air guiding unit (27) is set up with a fixed air distribution ratio, at most 50%, preferably at most 40%, even more preferably at most 30%, more preferably at most 20% of the air blown out in In the direction of the cooked vapors intake (3). Hob (1) Claim 1 and 2 , characterized by a first air guiding unit (26) and / or the second air guiding unit (27) with an adjustable air distribution ratio. Hob (1) Claim 4 , characterized in that the first air guiding unit (26) and / or the second air guiding unit (27) is set up at most 50%, preferably at most 40%, even more preferably at most 30%, more preferably at most 20% of the blown air in the direction of To guide the cooking vapors (3). Cooked vapors after Claim 1 and 2 , characterized in that the cooking vapors intake (3) is linear, the cooking vapors intake (3) being arranged parallel and centered between the first air ejection slot (5), which is also linear, and the second linear air ejection slot (6). Cooking vapors inlet according to one of the preceding claims, characterized in that the vacuum source (9) has a vacuum inlet (10). Cooking vapors inlet according to one of the preceding claims, characterized in that the suction chamber (17) has an inlet wall (12). Cooking vapors inlet according to one of the preceding claims, characterized in that the hob (1) is embedded in a hob frame (7) of the housing (8) and the housing (8) forms the two lateral marginal edges (18, 19), the two marginal edges (18, 19) on the one hand form a front edge (20) and on the other hand a rear edge (21). Cooking vaporizer according to one of the preceding claims, characterized in that on the one hand the longitudinal extension of the cooking vaporizer (3) a number of cooking points (2.1, 2.3) and on the other hand the longitudinal extent of the cooking vaporizing (3) a further number of further cooking points (2.2, 2.4) . Cooked vapors extractor according to one of the preceding claims, characterized in that the hob (1) comprises a control panel (4). Cooked vapors after Claim 11 , characterized in that the control panel (4) is arranged between the cooked vapors inlet (3) and the front edge (20).

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