EP3990833B1 - Device for extracting vapours, and method for extracting vapours by means of the device, and use of the device to extract vapours - Google Patents

Description

The invention relates to a device for extracting vapors comprising a suction housing and a fan as well as a method for extracting vapors over a hob by means of the device and a use of the device for extracting vapors over a hob.

Devices for extracting vapors are well known and are usually designed as extractor hoods. For example, this describes DE 10 2017 131 168 A1 an extractor hood with a suction fan held in a frame, a suction opening, an air duct between the suction opening and the suction fan and a guide surface arranged obliquely to the horizontal above a hob, in which the suction opening is formed.

DE 103 14 410 A1 discloses an extractor hood with a housing having a slot-shaped air inlet, the housing having a curved upper housing edge section and a housing section directed towards a cleaning flap on the underside of the housing.

DE 10 2009 028 808 A1 discloses an extractor hood with an inner frame and a viewing hood, which is designed to be detachable from a basic structure.

EP 3 220 060 A1 discloses an extractor device in which a fan housing is rotatably attached to the extractor housing using elongated holes.

DE 202 18 265 U1 reveals a combined extractor and cleaning hood.

WO 2015/056207 A1 discloses a household cooking appliance, in particular a stove, that includes a cooking space defined by a muffle that includes a smoke outlet with a smoke outlet on an upper wall of the muffle.

The disadvantage of the extractor hoods known from the prior art is that they are permanently installed in one place, in particular directly above the hob, in order to catch the rising vapors. For example, vapors cannot be removed in food stalls, mobile kitchens and food trucks as well as on cooking areas that do not have a wall or ceiling on which such extractor hoods can be mounted. In addition, permanently installed extraction devices for vapors do not offer the possibility of mobility or cannot be used flexibly on different cooking areas.

The object of the present invention is to provide a device for extracting vapors which avoids the disadvantages known from the prior art. In particular, the object of the invention is to provide a mobile device for extracting vapors.

The object is achieved according to the invention by means of a device for extracting vapors according to claim 1.

In addition, the object is achieved according to the invention by means of a device for extracting vapors comprising a suction housing and a blower, in particular arranged in a blower housing, the suction housing comprising an air inlet means, the air inlet means having an upper wall and a lower wall which form an inlet opening, wherein the inlet opening is assigned a projection.

Alternatively or additionally, the object is achieved according to the invention by means of an intake housing which comprises an air inlet means, the air inlet means having an upper wall and a lower wall which form an inlet opening, with the inlet opening being assigned a projection.

• mittels eines Gebläses ein Luftstrom in ein Ansauggehäuse mit einem Lufteinlassmittel erzeugt wird, wobei das Lufteinlassmittel einen horizontalen Öffnungswinkel aufweist,
• zumindest mittels einer oberen Wandung des Lufteinlassmittels, die zumindest auf einer Innenseite eine Wellenform mit zumindest zwei nach oben gewölbten Flächenabschnitten aufweist, der Luftstrom zumindest teilweise an zumindest die obere Wandung angelegt wird,
• der Luftstrom zumindest über eine Ausströmöffnung des Lufteinlassmittels, beispielsweise ausgebildet in einer unteren Wandung, in ein Gebläse, das insbesondere in einem Gebläsegehäuse angeordnet ist, geleitet wird.

Furthermore, the object is achieved according to the invention by means of a method for extracting vapors over a hob using the device, wherein

• an air flow is generated by means of a fan into an intake housing with an air inlet means, the air inlet means having a horizontal opening angle,
• at least by means of an upper wall of the air inlet means, which at least on one inside has a wave shape with at least two upwardly curved surface sections, the air flow is at least partially applied to at least the upper wall,
• the air flow is directed at least via an outflow opening of the air inlet means, for example formed in a lower wall, into a blower, which is arranged in particular in a blower housing.

• mittels eines Gebläses ein Luftstrom in ein Ansauggehäuse mit einem Lufteinlassmittel erzeugt wird,
• mittels einer insbesondere über einer Einlassöffnung des Ansauggehäuses sich erstreckenden Vorkragung der Luftstrom vor einem Lufteinlassmittel beruhigt und/oder gerichtet wird,
• der Luftstrom durch die Einlassöffnung in das Ansauggehäuse eingezogen wird, und
• der Luftstrom zumindest über eine Ausströmöffnung des Lufteinlassmittels, beispielsweise ausgebildet in einer unteren Wandung, in ein Gebläse, das insbesondere in einem Gebläsegehäuse angeordnet ist, geleitet wird.

In addition, the object is achieved according to the invention by means of a method for extracting vapors over a hob using the device, whereby

• an air flow is generated into an intake housing with an air inlet means by means of a fan,
• The air flow is calmed and/or directed in front of an air inlet means by means of a projection extending in particular over an inlet opening of the intake housing,
• the air flow is drawn into the intake housing through the inlet opening, and
• the air flow is directed at least via an outflow opening of the air inlet means, for example formed in a lower wall, into a blower, which is arranged in particular in a blower housing.

Furthermore, the object is achieved according to the invention by using the device for extracting vapors over a hob.

The alternative solutions according to the invention solve the problem of the invention individually or in combination with one another.

In one embodiment it is provided that the device has at least one upper wall with a wave shape and has no protrusion. In one embodiment it is provided that the device does not have an upper wall with a wave shape, but does have a projection. In one embodiment it is provided that the device has at least one upper wall with a wave shape and a projection.

In one embodiment of the method it is provided that the air flow is at least partially applied to at least the upper wall at least by means of an upper wall of the air inlet means, which has a wave shape at least on an inside, but not by means of an inlet opening in particular that extends over an inlet opening of the intake housing The air flow is calmed and/or directed in front of an air inlet means. In one embodiment of the method it is provided that the air flow is at least partially applied to at least the upper wall not by means of an upper wall of the air inlet means, which has a wave shape at least on an inside, but by means of a projection extending in particular over an inlet opening of the intake housing the air flow is calmed and/or directed in front of an air inlet means. In one embodiment of the method it is provided that the air flow is at least partially applied to at least the upper wall at least by means of an upper wall of the air inlet means, which has a wave shape at least on an inside, and additionally by means of a projection extending in particular over an inlet opening of the intake housing the air flow is calmed and/or directed in front of an air inlet means.

The proposed device is in particular mobile, that is designed to be movable and freely positionable. Another advantage is that the device does not necessarily have to be arranged above a hob, but can be arranged next to a hob and sufficient vapors are still drawn into the device and in particular filtered or dried there. Especially in places that are usually have little or no technical kitchen equipment, such as food stalls or food trucks, or even in private or commercial kitchens that do not allow extractor hoods to be set up due to technical, financial and/or building equipment, the device according to the invention can be used flexibly. In particular, it is possible to use the device on various cooking facilities, such as on a gas burner, on a grill, on an electric hob and/or on other cooking facilities.

In particular, it is provided that the intake housing and the blower housing can be moved together and/or separately from one another. In particular, the weight is designed such that the blower housing and/or the suction housing are easily portable, in particular a weight of less than about 25 kg is more preferably less than about 10 kg, more preferably between about 3 kg and about 10 kg, more preferably less than about 3 kg, more preferably less than about 1 kg, is provided for the device or for parts of the device. In particular, the intake housing weighs less than about 1 kg.

If the term "approximately" is used in the context of the invention in connection with values or value ranges, this is to be understood as meaning a tolerance range that the person skilled in the art considers to be common in this field, in particular a tolerance range of ±20%, preferably ±10%, more preferably ±5% is provided.

In one embodiment it is provided that the device can be placed on a movable and/or rollable base frame, for example a tea trolley, a serving trolley and/or a vehicle designed for the device.

In particular, the device can be used indoors and outdoors.

The device in particular has a top and a bottom as well as two sides, a front and a rear. The blower housing is preferably assigned to the bottom and the suction housing to the top. In a further embodiment it is provided that the blower housing is assigned to the top and the suction housing to the bottom. In the further description it is assumed that the intake housing is above the blower housing is arranged. However, a reverse configuration can be provided in each case.

In a further embodiment it is provided that the suction housing has an operating element by means of which the device can be operated. The control element preferably has at least one touch sensor and/or at least one button and/or at least one switch. In particular, an air flow into the device can be controlled by means of the control element. For example, at least one intensity of a fan arranged in the fan housing can be regulated or controlled by means of the operating element.

More preferably, the intake housing has a cover. The cover is preferably assigned to at least the top, more preferably the sides, more preferably the rear of the intake housing. In one embodiment it is provided that the cover forms the projection. The projection is assigned in particular to the front of the intake housing, which in particular has the inlet opening. In one embodiment it is provided that the projection is assigned to the inlet opening.

The advantage of the projection is that the incoming air is calmed before flowing through the inlet opening into the intake housing. Another advantage of the cantilever is that the air flow sucked in is directed. In particular, a direction of the air flow can be generated essentially from below and from the front through the projection. Furthermore, it is advantageously provided that an air flow from above into the inlet opening is essentially prevented by the projection. This results in an air flow into the inflow opening, which is either guided straight into the device or into the intake housing or from below into the intake housing.

The term “essentially” indicates a tolerance range that is acceptable to the person skilled in the field of suction devices for cooking vapors from an economic and technical point of view, so that the corresponding feature can still be recognized or implemented as such. For example, “essentially from below and from the front” means that the air flow is directed towards the front of the intake housing is. The front of the intake housing is defined in particular by the inlet opening. An air flow directed in this way passes the entrance opening with a horizontal vector or a vector that has an angle to the horizontal and is directed upwards. The air flow directed in this way can also have a vector component that comes from above, only this is smaller than a horizontal and/or vector component coming from below.

In one embodiment it is provided that at least one cover is assigned to an upper side of the device and at least partially envelops the air inlet means, the at least one cover having the projection. In a further alternative embodiment it is provided that the air inlet means has a projection which is assigned in particular to the top of the intake housing. This means in particular that the projection is arranged at least above the air inlet means or the air inlet opening.

Furthermore, it is proposed that the projection on the top and/or at least on the side of the device extends away from the air inlet means or the air inlet opening. In particular, the projection extends both on the top and on the sides of the intake housing. The air flow can thus advantageously be directed. More preferably, the projection arranged on the sides of the suction housing or the inlet opening has the advantage that a very precise alignment can be directed towards a vapor-forming container, for example a cooking pot, a grill, a wok or another cooking vessel. This particularly optimizes the efficiency of vapor extraction. In connection with the mobility and the alignability of the device, the inlet opening can be aimed exactly at the cooking vessel that generates the vapors on the cooking facility.

In a further embodiment it is provided that an expression of the projection decreases via the air inlet means from the top of the device towards the bottom of the device. In particular, an angular configuration is provided, in which, more preferably, an extension of the projection projects further away from the inlet opening on the top than on the bottom. The extension away from the inlet opening is therefore below smaller than above, with an inflow direction of the air flow into the device advantageously being induced or directed obliquely from below. In particular, it is advantageous to at least partially influence the inflow direction, since the device has a certain height, with the inlet opening possibly being above a cooking vessel. Cooking vapors can therefore be drawn directly from the cooking vessel into the device by this directed air flow. In particular, the projection on the sides has an angle starting from a vertical of approximately 60° to approximately 85°, preferably approximately 80°. In one embodiment it is provided that no projection is provided below the inlet opening.

In a further embodiment, the lower wall has the outflow opening. In particular, the outflow opening is arranged such that the air flow flows out of the air inlet means at approximately 70° to approximately 120°, preferably approximately 80° to approximately 100°, more preferably approximately 90° to the inflow direction. In a further embodiment, it is provided that the outflow opening is arranged in such a way that the air flow cannot be deflected or can only be deflected by approximately 0° to approximately 90° to the inflow direction. In particular, in one embodiment it is provided that the outflow opening is arranged in a rear wall.

In one embodiment, the device has an adapter plate. In particular, the intake housing has the adapter plate. In a further embodiment it is provided that the adapter plate can be connected to a pipe extension, which is in particular aligned with the outflow opening of the lower wall. In a further embodiment, the adapter plate has the pipe extension. Particularly preferably, it is provided that the adapter plate can be arranged on the lower wall or is designed in particular with the same material. In a further embodiment it is provided that the adapter plate is comprised of a housing surrounding the suction housing.

In a further embodiment it is provided that the intake housing is height-adjustable. In particular, a distance between the intake housing and the blower housing is adjustable. It is further preferred that the pipe extension can be inserted into the blower housing to a variable extent, so that the suction housing can be positioned at different heights relative to the blower housing. In a further embodiment it is provided that the pipe extension is telescopic is designed so that the intake housing can be positioned at different heights to the blower housing.

In a further embodiment it is provided that the device has an inlet aperture upstream of the inflow opening in the inflow direction. The inlet aperture determines the width of the inflow opening, especially if it is arranged directly in front of the inflow opening. The inlet panel is preferably designed vertically, so that the surface of an opening in the inlet panel has a surface normal perpendicular to a vertical axis. In a further embodiment it is provided that the inlet panel is arranged in front of the inflow opening at an angle to a vertical axis or the inlet opening, in particular adapted to an angle of the lateral projection. In one embodiment, the inlet panel can change the inlet opening geometrically, in particular make it smaller, if this seems sensible.

According to the invention, the device has the air inlet means. According to the invention, the inlet opening is formed by the upper wall and the lower wall. In one embodiment, the upper wall has an upper inflow edge and the lower wall has a lower inflow edge, each of which is preferably assigned to the inlet opening. The upper inflow edge and/or the lower inflow edge preferably have a radius. In particular, the radius is about 5 mm to about 15 mm, preferably about 10 mm. It is preferably provided that the upper inflow edge and the lower inflow edge adjoin one another and thus define an inlet opening or an opening mouth. It is further preferred that the upper inflow edge extends at least partially downwards and/or the lower inflow edge extends at least partially upwards. More preferably, at least one section of the inflow edge that extends downwards and/or upwards also has the radius. The inlet opening is preferably essentially rectangular or essentially oval. In an embodiment of the upper and/or lower inflow edge having a radius, a particularly circumferential line on the inflow edge, which has a tangent that is parallel to the vertical axis, essentially defines the inlet opening. More preferably, the upper inflow edge is designed as a downwardly curved surface section. More preferably, the lower inflow edge is designed as an upwardly curved surface section. More preferred the upper inflow edge and/or the lower inflow edge is arranged such that an expansion is formed in the area of the inlet opening.

In one embodiment it is provided that the inflow edges extend at least partially into the interior of the air inlet means. More preferably, the inflow edges form part of the wave shape.

In one embodiment, the intake housing has an air inlet medium receptacle. Preferably, the air inlet means can be inserted into the air inlet means receptacle and, more preferably, can be releasably locked in this receptacle by means of a locking element. To operate the locking element, the air inlet means receptacle and/or the intake housing has openings by means of which the air inlet means can be removed or unlocked from the air inlet means receptacle, for example for cleaning. In one embodiment, the openings are covered with flexible membranes, which advantageously simplify cleaning of the intake housing.

In one embodiment, the air inlet means further has a locking means, which is preferably designed as a locking receptacle. In particular, it is provided that the air inlet means has an upper shell. It is further preferred that the upper shell has the locking means, in particular the locking receptacle. According to the invention, the air inlet means has at least the upper wall, which in one embodiment is at least partially surrounded or surrounded by the upper shell.

The locking element and the locking means preferably form a snap connection. More preferably, the air inlet means can be releasably or permanently connected to the air inlet means receptacle in a form-fitting manner by means of the snap connection. In particular, the latching element has at least one latching lug which engages in the latching receptacle of the latching means. More preferably, the locking element is deformed during joining and snaps into the locking receptacle. More preferably, the locking element can be deformed in order to remove the locking element and locking means. In an alternative embodiment it is provided that the air inlet means has the latching element and the air inlet means receptacle has the latching means. According to the invention, the wave shape of the upper wall has at least two upwardly curved surface sections, which can be described in particular as concave. More preferably, the wave shape has at least two downwardly curved surface sections, which can in particular be described as convex, with at least one convex surface section being arranged between the upwardly curved surface sections. In one embodiment, the waveform can be designed to be sinusoidal in a section. In a further embodiment, the wave shape can be designed in any desired manner, in particular with continuously adjoining curvatures upwards and downwards. In particular, the expansions of the interior are arranged upwards in the area of the curvatures of the upper wall and are further preferably formed by them. This has the advantage that the air flow within the air inlet means is applied at least to the upper wall, more preferably also to the lower wall.

In one embodiment it is provided that at least one concave surface section has a radius between approximately 25 mm and approximately 150 mm, preferably approximately 50 mm to approximately 100 mm, more preferably approximately 50 mm, more preferably approximately 100 mm. In a further embodiment it is provided that the first concave surface section has a radius that differs from the radius of the second concave surface section. Furthermore, in a preferred embodiment it is provided that the radius of the first concave surface section is smaller than the second concave surface section. In particular, the first concave surface section has a radius of approximately 50 mm and the second surface section has a radius of approximately 100 mm. Furthermore, in one embodiment it is provided that the radius of the first concave surface section is larger than the second concave surface section. In particular, the second concave surface section has a radius of approximately 50 mm and the first surface section has a radius of approximately 100 mm. Furthermore, in a preferred embodiment it is provided that the radius of the first concave surface section is approximately the same size as the second concave surface section. In particular, both concave surface sections have a radius of approximately 50 mm or approximately 100 mm.

Due to the applied flow, the interior space of the air inlet means is used optimally, in particular to the extent that energy losses are avoided and energy is therefore saved or a more efficient extraction of vapors can take place. Furthermore, due to the expansion caused by the wave shape, a redirection of the air flow in the direction of the blower housing is also more energy efficient.

It is preferably provided that a wave shape of at least the upper wall is designed such that a height of the interior increases and decreases in the inflow direction. It is preferably provided that the interior has at least a first expansion and a second expansion. In particular, the first expansion is assigned immediately or shortly after the inlet opening. More preferably, the first expansion is arranged downstream of the upper and/or lower inflow edge in the inflow direction and more preferably arranged essentially immediately behind it. In particular, the inflow edge is at least part of a downwardly curved surface section, which is followed by an upwardly curved surface section.

A further embodiment provides that a second expansion is assigned to an outflow opening. In particular, the second expansion is arranged essentially above the outflow opening, that is, the wave shape is designed to be directed upwards above the outflow opening. In particular, the expansion is defined at least above the outflow opening from a surface that defines a wall of the outflow opening and a vertex of the waveform above the outflow opening.

The advantage of this embodiment is that the losses that arise from the redirection of the air flow into the outflow opening are reduced by the expansions. Preferably, the wave shape or the expansion of the housing, more preferably the multiple expansion of the housing, reduces the losses during a subsequent deflection, in particular around the fan rotated by approximately 90 °. Furthermore, the wave shape of at least the upper wall results in a better application of the air flow to the upper wall and/or to the lower wall and thus more preferably a flow with less loss than with a straight design of the walls. Furthermore, vapors can advantageously be captured more broadly in front of the inlet opening.

According to the invention, the wave shape causes at least two expansions of the interior. In a further embodiment it is provided that the waveform causes 2, 3, 4 or more than 4 expansions of the interior.

In a further embodiment it is provided that the lower wall at least partially has a wave shape. In one embodiment, the lower wall has at least one, preferably at least two, more preferably at least three, downwardly curved surface sections, which can also be described as concave. In one embodiment, the lower wall has at least one, preferably at least two, more preferably at least three, upwardly curved surface sections, which can also be described as convex. In particular, the wave shape of the lower wall at least partially reinforces the expansion of the interior space due to the wave shape of the upper wall or at least causes an expansion elsewhere. In particular, it is provided that the upper wall and the lower wall have at least partially anti-parallel waveforms. In particular, this means that an upward undulation of the upper wall is essentially parallel to a downward undulation of the lower wall. In one embodiment, anti-parallel waveform can also be understood to mean that an upward waveform of the upper wall is essentially parallel to a downward waveform of the lower wall, with the geometric designs of the waveforms and/or the amplitude of the waveforms differing from one another.

In particular, a waveform is to be understood as meaning the shape of a transverse wave in the inflow direction. It is further preferred that the interior space is expanded and narrowed by the wave shape in the inflow direction. In particular, the interior space is alternately expanded and narrowed by the wave shape of at least the upper wall.

In particular, the design of the second expansion, which is assigned in particular to the outflow opening, improves flow from upper areas above a hob or can enlarge the detection area. In an embodiment with a projection, it is further provided that the flow on the projection is optimized.

In an exemplary embodiment it is provided that a first widening in the inflow direction is provided in front of the lower and upper inflow edges in the area of the inlet opening. A narrowing caused by the downwardly curved inflow edge, which in particular forms the first downwardly curved surface section, is followed by a second widening in the direction of flow through at least a first upwardly curved surface section of the upper wall. In particular, the upper wall has a second downwardly curved surface section, which adjoins the first upwardly curved surface section and which causes a second narrowing of the interior space. More preferably, the upper wall has a second upwardly curved surface section, which adjoins the second downwardly curved surface section and which causes a third expansion of the interior. More preferably, the upper wall extends in the inflow direction after the third expansion into the closed rear wall.

In a further embodiment it is provided that the air inlet means has a vertical opening angle. In particular, a first leg of the vertical opening angle touches at least two convex surface sections and a second leg is arranged horizontally. The vertical opening angle is preferably about 1° to about 5°, more preferably about 2° to about 4°, more preferably about 2°, more preferably about 4°. The vertical opening angle preferably opens upwards. In particular, in one embodiment it is provided that a vertex of the first convex surface section is arranged higher than a vertex of the second convex surface section.

According to the invention it is provided that the air inlet means has the horizontal opening angle, the horizontal opening angle being an angle in a horizontal sectional view of the air inlet means, the legs of which are applied to the lateral inner walls which are formed by the upper wall and/or by the lower wall. In one embodiment it is provided that the horizontal opening angle is approximately 30° to approximately 60°, preferably approximately 40° to approximately 55°, more preferably approximately 45° to approximately 50°, more preferably approximately 46° and approximately 50°, more preferably approximately is 48°. The horizontal opening angle is advantageously optimally designed for mobile use of the device. The horizontal opening angle allows good alignment of the air flow to be sucked in, high energy efficiency and a high volume flow, so that the device is particularly designed for placement next to a cooking facility.

Furthermore, it is preferably provided that the upper wall and the lower wall form a closed rear wall opposite the inlet opening in the inflow direction. More preferably, it is provided that a narrowing of the interior of the air inlet means is effected by the upper and/or lower wall, preferably directly in front of the closed rear wall. In one embodiment, the closed rear wall is a surface section formed by the upper wall and the lower wall. The closed rear wall preferably has a surface section that is curved backwards. More preferably, the air flow can be directed to the outflow opening by means of the closed rear wall.

In an embodiment in which the waveform is provided in connection with the projection, there is the advantage that both a direction of the air flow and optimization and energy efficiency in the extraction of vapors are achieved.

The expansion of the interior space, which is generated by the widenings, increases the effective flow cross section within the air inlet means. This achieves an equalization of the flow within the air inlet means. In particular, this effect is reinforced by the alternation of expansion and contraction. This results in a homogeneous and therefore more favorable speed distribution in the area of the inlet opening and in one embodiment in the area of any protrusion that may be present and in one embodiment in the area of the outflow opening of the intake housing and thus reduces the overall pressure loss.

In a further embodiment it is provided that the suction housing has a lower shell which at least partially surrounds the lower wall. In a further embodiment, the lower shell and the upper shell can together form a housing that at least partially, preferably completely, surrounds the air inlet means. Particularly preferred It is provided that the lower shell has an outflow opening which is preferably aligned with the outflow opening of the lower wall.

According to the invention, the device has a blower housing. In one embodiment it is provided that the intake housing is detachably connected to the blower housing. In particular, releasably connected means that the intake housing can be separated from the blower housing without tools. In a further embodiment it is provided that the intake housing is not detachably connected to the blower housing without tools. It is preferably provided that the blower housing has a blower. In particular, the blower is designed as an axial blower, a radial blower or a cross-flow blower, with a design as a radial blower being preferred. It is further advantageously provided that the suction housing is detachably connected to the blower housing via the adapter plate. In a further embodiment it is provided that the intake housing is rotatably connected to the blower housing. In a further embodiment, the intake housing is tiltably connected to the blower housing. In particular, the intake housing can be inclined upwards and/or downwards relative to the blower housing. Such an orientation can advantageously be directed, for example, at a cooking vessel that produces vapor.

The rotatable connection between the intake housing and the blower housing has the advantage that the inflow opening can be easily aligned, with the intake housing, which is preferably lighter than the blower housing, being able to be rotated without having to turn the entire device.

In a further embodiment it is provided that the blower housing has an air inlet opening. This is preferably arranged on the top of the blower housing. In one embodiment it is provided that the air inlet opening preferably at least partially accommodates a pipe extension. In one embodiment, the pipe extension can be part of the adapter plate. In a further embodiment it is provided that the pipe extension is part of the air inlet opening or is arranged in the air inlet opening. Furthermore, it is provided that the adapter plate can be placed on the pipe extension. On the Pipe attachment can be connected to adapter plate or blower housing and intake housing.

In a further embodiment it is provided that the blower housing has at least one safety switch. It is preferably provided that the safety switch is a proximity sensor, an induction sensor, a button, a contact closure that can be achieved, for example, via the pipe extension, or another switching or sensing device. In particular, it is provided that the blower housing has the blower, which can be switched by means of the safety switch. The advantage of providing at least one safety switch is that the blower stops or is switched off as soon as the suction housing is removed from the blower housing. In particular, in one embodiment it is provided that the safety switch is arranged in the area of the suction opening. In a further embodiment it is provided that the safety switch is arranged on the top of the blower housing or is assigned to the top. In a further embodiment it is provided that the safety switch can be switched by means of the suction housing and/or the pipe extension.

In a further embodiment, the blower housing has air outlet openings. The blower housing has at least one air outlet opening. The housing preferably has at least two air outlet openings. It is further preferred that the air outlet openings are arranged on the sides, the rear and/or the front. The air outlet openings are preferably arranged on the sides of the blower housing. In a further embodiment it is provided that the air outlet opening is assigned filters which filter the air flow.

The air flow is induced by the blower arranged in the blower housing. The fan sucks in air, which is led through the inlet opening into the interior of the intake housing. If there is a projection, the air is directed and, if necessary, calmed down before it flows into the interior. In the interior, the air flow is applied to the upper and/or lower wall when the upper and/or the lower walls have a wave shape with at least two curvatures, which each expand the interior. Within the interior, the air flow is directed towards the blower housing deflected, which is in particular about 90 ° downwards. The air flow flows through the outflow opening in the lower wall into the blower housing. In particular, the air flow is directed into the blower housing through a pipe extension arranged on the adapter plate, which is at least partially inserted into the suction opening. The air flow passes through the fan and prefers filters downstream of it. The air flow then exits through the air outlet openings on the blower housing.

In a further embodiment it is provided that the blower housing has an electrical unit. The electrical unit is preferably arranged at the rear of the blower housing. In a further embodiment, the electrical unit is arranged in the blower housing. The electrical unit includes in particular the electrical supply, a control and/or a regulation of the fan.

In a first exemplary embodiment it is provided that the inlet opening is assigned a projection which is formed, for example, by the covers. In particular, the projection protrudes above the inlet opening. Furthermore, it can be seen that the projection above the inlet opening extends further than below the inlet opening. For example, it is provided that no projection is provided below the inlet opening. The cover thus forms the projection surrounding the inlet opening at an angle to the horizontal. In the first exemplary embodiment it is provided that the lower wall does not have a wave shape.

According to the invention it is provided that at least the upper wall has a wave shape. The waveform forms, for example, a first expansion and a second expansion within the air inlet means. Preferably, the first widening is assigned to the air inlet opening and widens the air inlet means immediately behind the inflow edges provided with radii. An exemplary air flow flows into the air inlet means in the inflow direction through the inlet opening and is applied to at least the upper wall by the waveform. Furthermore, the air flow is directed downwards and backwards through the outflow opening. In the second exemplary embodiment it is further provided that the lower wall has a shape that increases the expansion of the interior space. In particular, it is behind the lower leading edge a setback is provided, which helps shape the expansion. The lower wall forms an upwardly extending bead around the outflow opening and extends downwards within the bead to the outflow opening. In the second exemplary embodiment it is provided that the device has no projection.

In a third exemplary embodiment it is provided that at least the upper wall has a wave shape. The waveform forms, for example, a first expansion and a second expansion within the air inlet means. Preferably, the first widening is assigned to the air inlet opening and widens the air inlet means immediately behind the inflow edges provided with radii. An exemplary air flow flows into the air inlet means in the inflow direction through the inlet opening and is applied to at least the upper wall by the waveform. Furthermore, the air flow is then directed downwards and backwards through the outflow opening. In the third exemplary embodiment it is further provided that the lower wall has a shape that increases the expansion of the interior space. In particular, a recess is provided behind the lower inflow edge, which helps shape the expansion. The lower wall forms an upwardly extending bead around the outflow opening and extends downwards within the bead to the outflow opening. In the third exemplary embodiment it is also provided that the inlet opening is assigned a projection which is formed, for example, by the covers. In particular, the projection protrudes above the inlet opening. Furthermore, it can be seen that the projection above the inlet opening extends further than below the inlet opening. For example, it is provided that no projection is provided below the inlet opening. The cover thus forms a projection surrounding the inlet opening at an angle to the horizontal.

What all exemplary embodiments have in common is that the device is designed with a suction housing and a blower housing. The intake housing includes an air inlet means. The device has a top and a bottom. Furthermore, the device includes two sides as well as a front and a rear. Air outlet openings are provided on the sides and the blower housing. The intake housing has an air inlet means. The air inlet means has an upper wall with an inflow edge. A lower wall is connected to the upper wall and forms one with it Interior not specified here. The lower inflow edge of the lower wall borders the upper inflow edge of the upper wall and forms a rounded rectangular inlet opening with it. Furthermore, the lower wall has an outflow opening through which an air flow can be guided into an air inlet opening of the blower housing. An upper shell and a lower shell surround the air inlet means. The lower shell has an outflow opening which is aligned with the outflow opening of the lower wall and through which the air flow can be directed in the direction of the blower housing.

In all exemplary embodiments, the intake housing preferably further has two covers arranged one above the other and an air inlet means receptacle, which surround and protect the air inlet means. Preferably, in the exemplary embodiment it is provided that at least one control element is integrated into the suction housing, with at least one cover having an opening through which the at least one control element can be operated. The air inlet means receptacle has at least one latching element which interacts with at least one latching receptacle of the upper shell. In this way, the air inlet means can be detachably inserted into the intake housing together with the upper and lower shells. In particular, the solubility of the air inlet means makes it easier to clean it.

An adapter plate is arranged below the air inlet medium receptacle and the cover. In the exemplary embodiments, a pipe extension is preferably arranged below the adapter plate. The pipe extension is preferably designed to be aligned with the outflow opening of the lower wall when the air inlet means is inserted into the air inlet means receptacle. An inlet panel is placed in front of the air inlet means or arranged in front of it in order to further define the air inlet opening, in particular by shaping an inlet panel opening.

In the exemplary embodiments, the air inlet means has an upper wall and a lower wall. The upper wall has a wave shape on the inside. Furthermore, the lower wall has an outflow opening that is aligned with the pipe extension. The upper wall and the lower wall also have inflow edges that define the inflow opening. The pipe extension is preferably part of the adapter plate and is fixed in this. In a further embodiment, the raw attachment can be removed from the adapter plate. The inflow edges each have a radius and are preferably not sharp. The pipe extension of the intake housing can be inserted into the air inlet opening, with at least one safety switch being actuated by assembling the two housing parts. The at least one safety switch is preferably arranged in a wall section forming the air inlet opening. Furthermore, the blower and the electrical unit are arranged in the blower housing.

In particular, the intake housing comprises the air inlet means, the air inlet means having an upper wall and a lower wall, which form an interior with an inlet opening, at least the upper wall having a wave shape on an inside with at least two upwardly curved surface sections, at least in the area the upwardly curved surface sections of the interior have widenings and the inlet opening is assigned a projection.

• mittels eines Gebläses ein Luftstrom in ein Ansauggehäuse mit einem Lufteinlassmittel erzeugt wird, wobei das Lufteinlassmittel einen horizontalen Öffnungswinkel aufweist,
• zumindest mittels einer oberen Wandung des Lufteinlassmittels, die zumindest auf einer Innenseite eine Wellenform mit zumindest zwei nach oben gewölbten Flächenabschnitten aufweist, der Luftstrom an zumindest die obere Wandung angelegt wird,
• der Luftstrom zumindest über eine Ausströmöffnung bevorzugt in einer unteren Wandung des Lufteinlassmittels in ein Gebläse geleitet wird.

Furthermore, a method for extracting vapors above the hob using the device described above is proposed, wherein

• an air flow is generated by means of a fan into an intake housing with an air inlet means, the air inlet means having a horizontal opening angle,
• at least by means of an upper wall of the air inlet means, which has a wave shape on at least one inside with at least two upwardly curved surface sections, the air flow is applied to at least the upper wall,
• the air flow is directed into a fan at least via an outflow opening, preferably in a lower wall of the air inlet means.

• mittels eines Gebläses ein Luftstrom in ein Ansauggehäuse mit einem Lufteinlassmittel erzeugt wird,
• mittels einer insbesondere über eine Einlassöffnung des Ansauggehäuses sich erstreckenden Vorkragung der Luftstrom von einem Lufteinlassmittel beruhigt und/oder gerichtet wird,
• der Luftstrom durch die Einlassöffnung in das Ansauggehäuse eingezogen wird, und
• der Luftstrom zumindest über eine Ausströmöffnung in einer unteren Wandung des Lufteinlassmittels in ein Gebläse geleitet wird.

Alternatively or additionally, a method for extracting vapors over a hob using the device described above is proposed, wherein

• an air flow is generated into an intake housing with an air inlet means by means of a fan,
• the air flow is calmed and/or directed by an air inlet means by means of a projection extending in particular over an inlet opening of the intake housing,
• the air flow is drawn into the intake housing through the inlet opening, and
• the air flow is directed into a fan at least via an outflow opening in a lower wall of the air inlet means.

In one embodiment, the method provides that the air flow in front of an air inlet means is calmed and/or directed both by means of a projection which extends in particular at an inlet opening of the intake housing and at least by means of an upper wall of the air inlet means which has a wave shape at least on an inside, the air flow is at least partially applied to at least the upper wall.

Furthermore, the use of a device described above for extracting vapors over a hob is proposed.

Fig. 1

eine Vorrichtung zur Absaugung von Wrasen;

Fig. 2

eine Explosionsansicht einer alternativen Vorrichtung;

Fig. 3

eine Schnittansicht der Vorrichtung aus Fig. 1, wobei ein Ansauggehäuse von einem Gebläsegehäuse getrennt ist;

Fig. 4

eine Detailansicht des Schnittes aus Fig. 3;

Fig. 5

eine Ansicht des Lufteinlassmittels von unten;

Fig.6

eine Frontansicht der Vorrichtung nach Fig. 2;

Fig.7

eine Seitenansicht der Vorrichtung nach Fig.6; und

Fig.8

eine Aufsicht der Vorrichtung nach Fig.6.

Further advantageous refinements can be seen from the following drawings. However, the developments presented there are not to be interpreted in a restrictive manner; rather, the features described there can be combined with one another with the features described above to form further configurations. Furthermore, it should be noted that the reference numbers given in the description of the figures do not limit the scope of protection of the present invention, but merely refer to the exemplary embodiments shown in the figures. The same parts or parts with the same function have the same reference numbers below. Show it

Fig. 1

a device for extracting vapors;

Fig. 2

an exploded view of an alternative device;

Fig. 3

a sectional view of the device Fig. 1 , wherein a suction housing is separated from a blower housing;

Fig. 4

a detailed view of the cut Fig. 3 ;

Fig. 5

a bottom view of the air intake means;

Fig.6

a front view of the device Fig. 2 ;

Fig.7

a side view of the device Fig.6 ; and

Fig.8

a supervision of the device Fig.6 .

Fig. 1 shows a device 10 with a suction housing 78 and a blower housing 20. The suction housing 78 includes an air inlet means 40. The device 10 has a top 16 and a bottom 17. Furthermore, the device includes two sides 12 and 13 as well as a front 14 and a rear 15. Air outlet openings 24 are provided on the sides 12 and 13 of the blower housing 20.

The intake housing 78 further has at least one cover 82 in the embodiment shown here. The air inlet means 40 and/or an air inlet means receptacle not visible here, which preferably at least partially surrounds the air inlet means 40, has a latching element 84 which cooperates with a latching receptacle 44 of the cover 82. In this way, the air inlet means 40 can be detachably inserted into the intake housing 78. In particular, the detachability of the air inlet means 40 makes it easier to clean it.

Fig. 2 shows an exploded view of a further embodiment of the device 10, with the individual parts of the intake housing 78 being discussed in particular below. The intake housing 78 has an air inlet means 40. The air inlet means 40 has an upper wall 54 with an inflow edge 56. A lower wall 62 is connected to the upper wall 54 and forms with it an interior space not further specified here. The lower inflow edge 66 of the lower wall 62 borders on the upper inflow edge 56 of the upper wall 54 and forms with it a rounded rectangular inlet opening 72, which is in Fig. 3 can be recognized. Furthermore, the lower wall 62 has an outflow opening 64 through which an in Fig. 4 Air flow 18 shown can be guided into an air inlet opening 22 of the blower housing 20.

The intake housing 78 also has a cover 82 in the embodiment shown here. In the embodiment shown here it is preferably provided that a Control element 86 is integrated into the suction housing 78, the cover 82 having an opening, not specified here, through which the control element 86 can be operated.

An adapter plate 88 is arranged below the air inlet medium receptacle 80 and the cover 82. An inlet panel 90 is placed in front of the air inlet means 40 to further define the inlet opening 72 Fig. 3 can be seen, in particular by shaping an inlet aperture opening 92. In a further embodiment it is also provided that the inlet panel 90 only frames the air inlet means 40 or that the inlet panel 90 is completely omitted.

Fig. 3 shows a longitudinal section through the device 10 Fig. 1 , wherein the intake housing 78 is separated from the blower housing 20. It can be seen that the inlet opening 72 is assigned a projection 83, which is formed by the covers 82 in the embodiment shown. In particular, the projection 83 protrudes above the inlet opening 72 by approximately 23 mm. Furthermore, it can be seen that the projection 83 extends further above the inlet opening 72 than below the inlet opening 72. In particular, it is provided that no projection 83 is provided below the inlet opening 72. The cover 82 thus forms a projection 83 surrounding the inlet opening 72 with an angle α to the horizontal of approximately 80°.

As described in the general description, the device 10 can also be designed without a projection 83.

The air inlet means 40 has an upper wall 54 and a lower wall 62. The upper wall 54 has a wave shape 59 on the inside 60. Furthermore, the lower wall 62 has an outflow opening 64 which is aligned with the pipe extension 89. The upper wall 54 and the lower wall 62 also have inflow edges 56 and 58 which define the inflow opening 72. Again Fig. 3 can also be seen, the pipe extension 89 is part of the adapter plate 88 and is fixed in it. In a further embodiment, the raw attachment 89 can be removed from the adapter plate 88. The inflow edges 56 and 66 each have a radius 58 and 68 and are preferably not sharp.

Furthermore, in Fig. 3 the blower housing 20 can be seen in a sectional view, whereby it can be seen that the pipe extension 89 of the intake housing 78 can be inserted into the air inlet opening 22, a safety switch 23 being actuated by inserting the assembly of the two housing parts 78 and 20. The safety switch 23 is preferably arranged in an undesignated wall section forming the air inlet opening 22. Furthermore, the blower 96 and the electrical unit 98 are arranged in the blower housing 20.

Fig. 4 shows a sectional view of the intake housing 78 according to Fig. 1 , in which it can be seen that the wave shape 59 of the upper wall 54 has at least two upwardly curved surface sections 75 and 77, which can be described in particular as concave. More preferably, the wave shape 59 has at least two downwardly curved surface sections 79 and 81, which can be described in particular as convex. The upwardly curved surface sections 75 and 77 lead to a first widening 61 and a second widening 63 in the interior 57 of the air inlet means 40. The first widening 61 is preferably assigned to the air inlet opening 72 and widens the air inlet means 40 immediately behind those provided with radii 58 and 68 Inflow edges 56 and 66.

An opening angle β, the upper leg of which touches the vertex of the downwardly curved surface sections 79 and 81 and the lower leg of which runs horizontally or in the inflow direction 91, is approximately 2°.

The Fig. 4 An exemplary air flow 18 can also be seen which flows into the air inlet means 40 in the inflow direction 91 through the inlet opening 72 and is applied at least to the upper wall by the waveform 59. Furthermore, it can be seen that the air flow 18 is then directed downwards and rearwards through the outflow opening 64.

Fig. 4 also shows that the lower wall 62 has a shape that reinforces the expansion 61 and 63 of the interior 57. The lower wall 62 has two downwardly curved surface sections 85 and 87, which can also be described as concave. Furthermore, the lower wall 62 has two surface sections that are curved upwards 93 and 95, which can also be described as convex. The inflow edges 56 and 66 are formed by the convex surface sections 79 and 93. This shape creates an opening mouth that opens outwards. In particular, behind the lower inflow edge 66, the downwardly curved surface section 85 is provided, which helps to shape the widening 61. The lower wall 62 forms an upwardly extending bead 65 around the outflow opening 64, which is formed by the upwardly curved surface section 95, and extends downwards within the bead 65 to the outflow opening 64.

In an embodiment not shown here, only the waveform 59 of the air inlet means 40 is designed without the projection 83 which is the Fig. 3 can be seen. And in a further embodiment it is provided that the device is designed only with a projection 83 without the waveform 59 in the air inlet means 40.

Fig. 5 shows a view of the air inlet means according to Fig. 1 from underneath. A horizontal opening angle γ has legs which are applied to the lateral inner walls which are formed by the upper wall 54 and/or by the lower wall 62. The angle is approximately 48° and is therefore optimally designed for mobile use of the device 10.

Fig. 6 shows the device 10 in the alternative embodiment Fig. 2 in a front view. The intake housing 78 with the air inlet means 40 and the blower housing 20, which is arranged below the announcement housing 78, can be seen.

Fig. 7 shows the device 10 in the design Fig. 2 in a side view. The intake housing 78 and the blower housing 20 can be seen there. The air outlet openings 24 are designed as a number of horizontal slots.

Fig. 8 shows the device 10 in the design Fig. 2 in supervision. The suction housing 78 with the control unit 86 can be seen there.

The device 10 described can draw in or extract vapors very energy-efficiently and in a directed manner, and in particular it can be designed to be mobile, so that it can be used for many purposes in kitchens or on cooking areas outside of buildings.

Claims (13)

1. Device (10) for extracting vapors comprising an intake housing (78) and a blower (96), wherein the intake housing (78) comprises an air inlet means (40), wherein the air inlet means (40) has an upper wall (54) and a lower wall (62) which form an interior space (57) with an inlet opening (72) and wherein the air inlet means (40) has a horizontal opening angle, wherein the horizontal opening angle (γ ), wherein the horizontal opening angle (y) has legs which are applied to the lateral inner walls formed by the upper wall (54) and/or by the lower wall (62), wherein at least the upper wall (54) has on an inner side (60) a corrugated shape (59) with at least two upwardly curved surface sections (75, 77), wherein at least in the region of the upwardly curved surface sections (75, 77) the interior space (57) has widenings (61, 63).
2. Device (10) according to claim 1, characterized in that a first widening (61) is associated with the inlet opening (72).
3. Device (10) according to one or more of the preceding claims, characterized in that a second widening (63) is associated with an outflow opening (64).
4. Device (10) according to one or more of the preceding claims, characterized in that a projection (83) is associated with the inlet opening (72).
5. Device (10) according to claim 4, characterized in that at least one cover (82) is associated with a top surface (16) of said device (10) and at least partially envelops said air inlet means (40), said at least one cover (82) forming said projection (83).
6. Device (10) according to one or more of claims 4 to 5, characterized in that the projection (83) on the top surface (16) and/or on at least one side (12, 13) of the device (10) is extended away from the air inlet means (40).
7. Device (10) according to one or more of claims 4 to 6, characterized in that a protrusion of the projection (83) over the air inlet means (40) decreases from a top surface (16) of the device (10) towards a bottom surface (17) of the device (10).
8. Device (10) according to one or more of the preceding claims, characterized in that the intake housing (78) is detachably connected to a blower housing (20).
9. Device (10) according to claim 8, characterized in that the intake housing (78) is rotatably connected to the blower housing (20).
10. Device (10) according to one or more of claims 8 to 9, characterized in that the blower housing (20) comprises the blower (96), which is switchable by means of a safety switch (23).
11. Device (10) according to one or more of claims 8 to 10, characterized in that the intake housing (78) and the blower housing (20) are movable together and/or separately from each other.
12. Use of a device (10) according to any one of claims 1 to 11 for extracting vapors above a cooking hob.
13. Use according to claim 12, characterized in that

    - an air flow (18) is generated by means of a blower (96) into an intake housing (78) having an air inlet means (40), wherein the air inlet means (40) has a horizontal opening angle,

    - at least by means of an upper wall (54) of the air inlet means (40), which has at least on an inner side (60) a corrugated shape (59) with at least two upwardly curved surface sections (75, 77), the air flow (18) is at least partially applied to at least the upper wall (54),

    - the air flow (18) is directed into a blower (96) at least via an outlet opening (64) of the air inlet means (40).

Images