Extractor hood with air guiding device

Abstract

The present invention relates to a cooker hood comprising a cooker hood housing (10) which has an extraction opening (100) in the underside and in which at least one filter unit (12) is arranged offset upwards to the extraction opening (100), and an air guide device (13).The extractor hood (1) is characterized in that the air guide device (13) is displaceable relative to the extractor housing (10), the air guide device (13) has an upper air guide element (130), a lower air guide element (131), an outlet opening (1322) and an intake gap (132), wherein the outlet opening (1322) is formed in the rear area of ​​the air guide device (13) and faces the filter unit (12), and the intake gap (132) is formed by a gap (1320) between the front edges of the upper and lower air guide elements (130, 131) and a gap (1321) between the side edges of the upper air guide element (130) and the corresponding side edges of the lower air guide element (131).

Description

[0001] The present invention relates to a cooker hood with an air guide device.

[0002] When a range hood is mounted above a cooktop, it is common practice to equip it with an air deflector. This air deflector is also known as a screen or fume shield. Particularly in the case of built-in hoods, which are installed in a kitchen wall cabinet, the screen is usually a disc or plate.

[0003] The vapor shield can be attached to the extractor hood in such a way that it extends beyond the front of the hood and, in the case of a built-in hood, beyond the front of the kitchen cabinet. This prevents cooking fumes from escaping the front of the hood or the cabinet housing and thus from being drawn into the extractor hood. This risk of escaping is particularly relevant for fumes emanating from cookware placed on the front cooking zones of the hob. The vapor shield is typically made of glass, metal, or another airtight material. Although some of the rising fumes are drawn into the hood by the suction created by a fan inside the hood, a portion of the fumes will still not be drawn in with this type of extractor hood.

[0004] The object of the present invention is therefore to create a cooker hood with which the capture rate of fumes can be increased.

[0005] The invention is based on the understanding that this problem can be solved by improving the airflow to the interior of the extractor hood housing.

[0006] According to the invention, the problem is therefore solved by a cooker hood comprising a cooker housing which has an extraction opening in its underside and in which at least one filter unit is arranged offset upwards relative to the extraction opening, and an air guide device. The cooker hood is characterized in that the air guide device is displaceable relative to the cooker housing, the air guide device comprises an upper air guide element, a lower air guide element, an outlet opening and an intake gap, wherein the outlet opening is formed in the rear region of the air guide device and faces the filter unit, and the intake gap is formed by a gap between the leading edges of the upper and lower air guide elements and a gap between the side edges of the upper air guide element and the corresponding side edges of the lower air guide element.

[0007] A range hood is a cooking appliance that is preferably mounted above a cooktop. A particularly preferred option is a range hood that is integrated into a kitchen wall cabinet and can therefore also be called a built-in hood. The range hood can be attached to a wall, the kitchen ceiling, or inside the kitchen wall cabinet. The range hood has a housing. The housing contains the fan. The fan is preferably a radial fan. The housing has an intake opening. The intake opening is the opening through which fumes and vapors can enter the interior of the housing, or through which they can be drawn into the interior of the housing.The intake opening is located in the underside of the extractor hood housing and can comprise the entire underside of the housing. Preferably, the underside of the extractor hood housing is horizontal. In some embodiments, however, the underside of the extractor hood housing can also be inclined from the horizontal. In these cases, the underside of the extractor hood housing slopes upwards from its rear to its front. The extractor hood housing can form the outer surface of the extractor hood. Alternatively, it is also possible that a cover, which can also be referred to as a chimney, is arranged around the extractor hood housing, or that the extractor hood housing is integrated into a kitchen wall cabinet.

[0008] According to the invention, a filter unit is arranged in the extractor hood housing. The filter unit serves to clean the fumes drawn into the extractor hood. The filter unit is arranged offset upwards from the intake opening, meaning it is positioned at a distance above the intake opening. The filter unit can consist of one or more filter elements, which can, for example, be filter cartridges. The filter unit is preferably a grease filter unit, which filters grease and other impurities from the fumes. The filter unit can therefore preferably also be referred to as a grease filter unit.

[0009] The position of the filter unit within the extractor hood housing can also be referred to as the inlet opening. The inlet opening is the opening through which fumes can pass through the filter unit and enter the area of ​​the extractor hood housing where the fan is located. The area between the intake opening and the inlet opening can also be called the inflow area. The filter unit preferably covers the entire cross-section, in particular the entire width and depth, of the extractor hood housing in the plane of the inlet opening.

[0010] In addition to the extractor housing, the extractor hood has an air guide device. The air guide device is preferably located at least partially below the extractor housing. In particular, the air guide device can be located entirely below the extractor housing or can project at least partially through the extraction opening into the extractor housing. The latter case can be particularly advantageous with an air guide device that is movable downwards and forwards, or with an air guide device that has an upwardly projecting deflection area, which will be explained in more detail later.

[0011] An air guidance device is a device through which air or vapors can be directed or guided in a predetermined direction.

[0012] Directional terms such as front, back, side, top, and bottom, or front, back, sides, top, and bottom, refer, unless otherwise specified, to a cooker hood and its components in their installed state, for example, when the cooker hood is mounted on a wall, ceiling, or inside a kitchen cabinet. The front is the side facing the user of the cooker hood. The back is the side opposite the front. For a cooker hood mounted on a wall, the back is the side that is in contact with the wall.

[0013] According to the invention, the air guide device has an upper and a lower air guide element.

[0014] In the simplest case, each air guide element can be a flat, rectangular plate. The air guide elements are arranged one above the other. The upper and lower air guide elements can be arranged parallel to each other. Furthermore, the upper and lower air guide elements can be arranged parallel to the extraction opening. However, it is also within the scope of the invention for the upper air guide element to be arranged at an angle to the lower air guide element, so that the distance between these two air guide elements increases or decreases, for example, from the front edge of the air guide elements to the rear edge of the air guide elements. In addition, the air guide device can also be mounted on the extractor hood in such a way that the air guide device, and in particular the two air guide elements, are at least partially inclined at an angle to the extraction opening.

[0015] The upper and lower air guide elements are preferably rigidly connected to each other. Connecting elements, such as webs or pins, can be provided for this purpose. It is also within the scope of the invention that the upper and lower air guide elements are connected to each other via a detachable connection, such as a snap-fit ​​or screw connection.

[0016] The air guide elements are preferably designed to be airtight and can be made of materials such as metal, glass or plastic.

[0017] According to the invention, the air guide device has an outlet opening and an intake gap.

[0018] According to the invention, the outlet opening is formed in the rear region of the air guide device and faces the filter unit. The outlet opening is directed upwards. The rear region is defined as the area located between the rear of the air guide device and the midpoint of its depth. Preferably, the distance between the rear of the air guide device and the rear of the outlet opening is smaller than the distance between the front of the outlet opening and the midpoint of the air guide device's depth. The rear of the outlet opening can also be located directly on the rear of the air guide device, i.e., without any distance to the rear of the air guide device. An outlet opening facing the filter unit is defined as one that lies in a plane with a horizontal component and is directed upwards.This orientation of the outlet opening allows air from the air guide to be discharged in a direction that has at least one vertical component. This allows the air to be directed from the air guide to the filter unit located above it.

[0019] The intake gap is formed by a gap in the front section of the air guide and two lateral gaps. The front gap is formed between the leading edge of the upper air guide element and the leading edge of the lower air guide element. The lateral gaps are each formed by a side edge of the upper air guide element and the corresponding side edge of the lower air guide element, thus creating a left and a right lateral gap. The size and position of the gaps between the upper and lower air guide elements can be determined by the relative position of the air guide elements to each other, as well as their size and geometry.

[0020] The present invention thus provides an air guide device through which fumes can be drawn in both at the front and side of the air guide device. This reliably prevents fumes from bypassing the air guide device and thereby increases the fume capture rate of the extractor hood.

[0021] According to a preferred embodiment, the outlet opening is located in the surface of the filter unit when projected vertically from below. The outlet opening is also located in the surface of the inlet opening of the extractor hood housing, in which the filter unit is located, when projected vertically from below. This orientation allows the fumes to reach the filter unit reliably and without resistance.

[0022] According to the invention, the air guide device is movable relative to the extractor hood housing.

[0023] A movable air guide is defined here as an air guide that can be shifted relative to the extraction opening. In particular, the air guide can be shifted so that it projects partially beyond the front of the extractor hood. Preferably, the air guide can be moved from a retracted position, in which it lies completely beneath the extractor hood, to a pulled-out position, in which it projects partially beyond the front of the extractor hood and preferably also beyond a kitchen wall cabinet in which the extractor hood is housed. The retracted position can also be referred to as the retracted position, and the pulled-out position as the extended position.The range hood with the air guide in the retracted position and the range hood with the air guide in the extended position represent two operating states of the range hood. In both operating states, cooking fumes can be drawn in by the range hood. For this purpose, the intake gap of the air guide is accessible for cooking fumes in both operating states.

[0024] Preferably, the air guide device is displaceable parallel to the surface of the extraction opening, meaning it can be moved in a direction parallel to the surface of the extraction opening. However, it is also within the scope of the invention that, in addition to this movement, the air guide device can also be displaced downwards relative to the extraction opening. In this case, the air guide device can, for example, first be moved downwards and then moved forwards parallel to the extraction opening. Alternatively, it is also possible to move the air guide device forwards in a direction inclined downwards from the surface of the extraction opening, i.e., to pull it out.

[0025] The air guide device is preferably movable between a retracted and a retracted position. The air guide device can be moved both from the retracted position to the retracted position and vice versa.

[0026] In both the retracted and extended positions, the outlet opening is located below the filter unit. Specifically, in both positions, the outlet opening is projected vertically from below onto an inlet opening of the extractor hood housing, in which the filter unit is located, within the area of ​​the inlet opening and preferably within the area of ​​the filter unit.

[0027] The movement of the air guide device, that is, its displacement, can be done manually. Alternatively, the air guide device can also be moved by a motor or a hydraulic drive.

[0028] The two air guide elements can be mounted separately on the extractor hood housing for sliding movement. Preferably, however, the air guide elements are mounted on the extractor hood housing in such a way that they can be moved together relative to the housing. The mounting or fastening of the air guide device to the extractor hood housing can be achieved, for example, via rails in which the air guide elements of the air guide device, in particular the edges of the air guide elements, are guided.

[0029] According to a preferred embodiment, the intake gap forms a continuous U-shaped gap. The legs of the U-shape are formed by the lateral gaps between the air guide elements, and the base of the U-shape is formed by the front gap between the air guide elements. Alternatively, spacers can be provided between the front gap and the respective lateral gaps, holding the air guide elements at a predetermined distance from one another. These spacers can be located, for example, at the front corners of the air guide elements. This interrupts the intake gap or forms it with one front and two separate lateral gaps.

[0030] By providing, according to the invention, a continuous extraction gap or an extraction gap formed from separate gaps on the front and sides of the air guide device, and by allowing the air guide device to be moved relative to the extractor hood housing, in particular the extraction opening, a number of advantages can be achieved.

[0031] In particular, by shifting the air guide device forward, the area where fumes and vapors rise from cooking vessels on the front cooking zones of the hob can be covered by the air guide device. By additionally creating an extraction gap in the air guide device, located at the front and along the side edges of the air guide elements, the fumes and vapors can be extracted from this area and directed by the air guide device into the extractor hood housing. Compared to an extractor hood that only has a vapor screen consisting of a single plate and can be pulled forward relative to the extractor hood housing, the extraction rate for fumes and vapors is therefore significantly increased with the extractor hood according to the invention.Furthermore, since either a continuous U-shaped extraction gap is formed or an extraction gap is formed from a gap at the front and gaps at the side edges of the air guide elements, both the flow of vapors and fumes past the front of the air guide device and the flow past the sides of the air guide device can be prevented, thus further increasing the capture rate.

[0032] According to one embodiment, the intake gap is at least partially horizontal. The intake gap is directed downwards, meaning that upward-flowing vapors are directed upwards. For example, with a continuous U-shaped gap, the entire intake gap can be horizontal. However, it is also possible for, say, the front gap to be horizontal and the side gaps to be vertical, or vice versa.

[0033] According to one embodiment, the intake gap is at least partially vertical. This vertical orientation allows fumes to be drawn in from in front of or to the side of the air guide. In this embodiment, for example, with a continuous U-shaped gap, the entire intake gap can be vertical. However, it is also possible for, say, the front gap to be vertical and the side gaps to be horizontal, or vice versa.

[0034] Furthermore, according to the invention, it is also possible for the intake gap to be located at an angle between the horizontal and the vertical. The intake gap is directed downwards, meaning that upwardly flowing vapors are at least partially directed upwards from below.

[0035] An outlet opening is formed in the rear area of ​​the air guide device. In the simplest case, this outlet opening can be formed by the distance between the rear ends of the air guide device consisting of two parallel, flat plates.

[0036] Preferably, the outlet opening of the air guide extends across the entire width of the air guide in the rear area of ​​the air guide. This ensures that all fumes and vapors directed via the air guide to the extraction or inlet opening can enter it.

[0037] According to one embodiment, the upper and lower air guide elements each have a base plate, and the lower air guide element has a deflection area extending upwards from the rear edge of the base plate. In this embodiment, the upper air guide element can consist of the base plate itself; that is, the base plate forms the air guide element. In the embodiment where the lower air guide element has a deflection area extending upwards from the rear edge of the base plate of the lower air guide element, the air guide elements are arranged relative to each other such that the rear edge of the upper air guide element is offset forwards from the rear edge of the deflection area of ​​the lower air guide element, which is the rear edge of the lower air guide element. The rear edges of the two air guide elements can lie on a common plane.It is preferred, however, that the trailing edge of the lower air guide element lies on a plane higher than the plane on which the trailing edge of the upper air guide element lies. In both embodiments, the trailing edge of the upper air guide element is always offset forward relative to the trailing edge of the lower air guide element. The outlet opening of the air guide device is formed by the horizontal, and optionally additional vertical, offset of these two trailing edges.

[0038] By forming an upwardly directed deflection area on the lower air guide element, the vapors flowing through the air guide device can be deflected upwards, so that the change in direction after leaving the air guide device towards the filter unit located above is reduced.

[0039] According to one embodiment, the upper and lower air guide elements each have a base plate, and the upper air guide element has a deflection area extending downwards from the leading edge of the base plate. In this embodiment, the lower air guide element can consist of the base plate itself; that is, the base plate can form the lower air guide element. In the embodiment where the upper air guide element has a deflection area extending downwards from the leading edge of its base plate, the air guide elements are arranged relative to each other such that the leading edge of the deflection area of ​​the upper air guide element is offset forwards from the leading edge of the base plate of the lower air guide element. The leading edges of the two air guide elements can lie on a common plane.It is also within the scope of the invention that the leading edge of the lower air guide element lies on a plane that is higher than the plane on which the leading edge of the upper air guide element lies. The front gap of the intake gap of the air guide device is formed by the horizontal and vertical offset of these two leading edges.

[0040] By forming a downward-directed deflection area at the front of the upper air guide element, the vapors that are drawn in can be deflected immediately after entering the air guide device and directed between the base plates to the outlet opening.

[0041] According to a preferred embodiment, the upper air guide element has a deflection area directed downwards from the front edge of the base plate, and the lower air guide element has a deflection area directed upwards from the rear edge of the base plate. The upper and lower air guide elements are offset from each other in the depth direction such that the outlet opening is formed between the rear edges of the air guide elements, and the front part of the intake gap is formed between the front edges of the air guide elements.

[0042] The deflection area on the upper air guide element, as well as the deflection area on the lower air guide element, can each be created, for example, by folding or bending a portion of a flat plate, with the remaining portion forming the base plate. The angle at which the deflection area is directed upwards or downwards from the plane of the base plate is greater than 0° and less than 90°. For example, the angle can be in a range between 20° and 70°, such as 45°. The deflection area can be flat or curved. The base plate of each air guide element is preferably a flat plate.

[0043] In addition to a front deflection area on the upper air guide element, the upper air guide element can have lateral deflection areas extending downwards from the side edges of the base plate. Furthermore, the lower air guide element can, in addition to a rear deflection area, for example, have a front deflection area extending downwards from the front of the base plate of the lower air guide element. In this embodiment, a front deflection area is preferably also provided on the upper air guide element. The inclination of the front deflection area of ​​the lower air guide element preferably corresponds to the inclination of the front deflection area of ​​the upper air guide element. Alternatively, it is also possible that neither the upper nor the lower air guide element has a downwardly directed front deflection area, but rather that the leading edges of the air guide elements form the leading edges of the base plates of the air guide elements.

[0044] According to a preferred embodiment, the air guide has a depth that is at least equal to the depth of the filter unit, and the air guide has a width that is at least equal to the width of the filter unit. In a cooker hood that has the same cross-section at the extraction opening as at the position of the filter unit, i.e., the inlet opening, the depth of the air guide thus corresponds at least to the depth of the extraction opening, and the width of the air guide corresponds at least to the width of the extraction opening.

[0045] According to one embodiment, the extractor hood housing tapers from the extraction opening to the filter unit. This means that the depth and width of the extractor hood housing decrease from the extraction opening upwards to the position of the filter unit, i.e., the inlet opening. In this embodiment, the depth of the air guide device preferably corresponds to the depth of the inlet opening plus the amount by which the extractor hood housing widens from the inlet opening forward to the extraction opening.

[0046] In the case of a built-in hood, the depth of the air guide device is preferably greater than the depth of the extraction opening, or, in the case of a tapered extractor hood housing, greater than the depth of the inlet opening plus the amount of the extension towards the extraction opening at the front, in order to protrude beyond the front of the extractor hood housing at least to the extent that the front of the air guide device covers the front of a kitchen wall cabinet in which the extractor hood is housed.

[0047] The width of the air guide and the extraction or intake opening is defined as the dimension extending parallel to the front and back of the extractor hood. The depth is defined as the dimension perpendicular to the width, extending between the front and back.

[0048] In the embodiment where the extractor hood housing tapers from the extraction opening to the filter unit, the area of ​​the extractor hood housing between the intake opening and the filter unit is preferably formed by a wall having an open truncated pyramid shape. This wall can be formed integrally with the further extractor hood housing, in particular the part in which the filter unit is provided at the inlet opening and in which the fan is housed. However, it is also within the scope of the invention for this wall to be designed separately from the further extractor hood housing and connected to it, for example, detachably.

[0049] According to one embodiment, the filter unit has two filter elements, wherein the outlet opening of the air guide element is aligned with one filter element in the retracted position of the air guide device and with the other filter element in the extended position of the air guide device. The two filter elements extend in the width direction of the inlet opening and are arranged one behind the other in the depth direction. By providing a split filter unit, the filter elements can be removed separately. This is advantageous because the rear filter element is generally exposed to a higher degree of contamination.This is because this filter element is exposed to the oncoming vapors both when the air guide device is pulled out and when it is pushed in, while the front filter element is at least covered downwards by the upper air guide element when it is retracted.

[0050] The invention is explained again below with reference to the accompanying figures. These show: Figure 1 : a schematic, perspective view of a first embodiment of a cooker hood according to the invention; Figure 2 : a schematic sectional view of the first embodiment of the extractor hood according to the invention in a first operating state; Figure 3 : another schematic sectional view of the first embodiment of the extractor hood according to the invention, showing the flow pattern in the first operating state; Figure 4: a further schematic sectional view of the first embodiment of a cooker hood according to the invention in a second operating state; Figure 5 : a schematic sectional view of a second embodiment of a cooker hood according to the invention, showing the flow pattern in a first operating state; Figure 6a : a schematic perspective top view of a third embodiment of an air guide device of a cooker hood according to the invention; Figure 6b : a schematic bottom view of the embodiment of the air guide device according to Figure 6a ; Figure 7a : a schematic perspective top view of a fourth embodiment of an air guide device of a cooker hood according to the invention; Figure 7b : a schematic bottom view of the embodiment of the air guide device according to Figure 7a ; and Figure 8 : a schematic sectional view of a state-of-the-art extractor hood.

[0051] Identical elements are indicated in the figures with the same reference symbols and, if necessary, are only described or indicated once.

[0052] In the Figures 1 to 4 A first embodiment of a cooker hood 1 according to the invention is shown. The cooker hood 1 is arranged in a kitchen wall cabinet 31. Figure 1 Only part of the air guide 13 of the extractor hood 1 is visible. The more detailed construction of the extractor hood 1 will be described later with reference to the Figure 2 described. The extractor hood 1 is in Figure 1 arranged above a kitchen base cabinet 30, in the top of which a hob 2 is incorporated.

[0053] In the Figure 2 The extractor hood 1 is shown in section view along section line AA. Figure 1The right side of the extractor hood 1, or its components, is referred to below as the front, and the left side as the back. The extractor hood 1 is installed in the kitchen wall cabinet 31. The back of the extractor hood 1 faces the back of the kitchen wall cabinet 31, which is attached to a wall.

[0054] As can be seen from Figure 2 As a result, the extractor hood 1 in the illustrated embodiment comprises an extractor housing 10. An exhaust pipe 11 is connected to the top of the extractor housing 10, through which air from the extractor hood 1 can be discharged into the room in which the extractor hood 1 is operated or into the environment.

[0055] An extraction opening 100 is formed in the underside of the extractor hood housing 10. The extraction opening 100 can extend across the entire underside of the extractor hood housing 10. From the extraction opening 100, the extractor hood housing 10 tapers upwards over a portion of its height. This tapered section is also referred to as the inlet area 101 and is surrounded by a wall 102, which forms a truncated pyramid open at the top and bottom. The portion of the extractor hood housing 10 containing the fan (not shown) adjoins the inlet area 101 at the top. This upper part of the extractor hood housing 10 has a depth that is less than the depth of the kitchen wall cabinet 31. The wall 102 of the inlet area 101 covers this difference between the upper part of the extractor hood housing 10 and the kitchen wall cabinet 31.For this purpose, in the embodiment shown, the wall 102 extends from the rear of the upper part of the extractor hood housing 10 inclined backwards and downwards, and from the front of the upper part of the extractor hood housing 10 inclined forwards and downwards.

[0056] A filter unit 12 is arranged in the extractor hood housing 10. In the illustrated embodiment, the filter unit 12 is located at the transition between the inlet area 102 and the upper part of the extractor hood housing 10. In particular, the filter unit 12 is arranged in the inlet opening 103 of the upper part of the extractor hood 10.

[0057] In the embodiment shown, the filter unit 12 consists of two separate filter elements 120 and 121. Figure 2The filter elements 120 and 121 are shown separated from each other. However, it is within the scope of the present invention for the filter elements 120 and 121 to be in direct contact with each other. A frame (not shown) can be arranged in the inlet opening 103 between the filter elements 120 and 121, as well as in any gap that may exist between the respective filter element 120, 121 and the front or rear wall of the extractor hood housing 10. This prevents air from entering the interior of the upper part of the extractor hood housing 10 through the inlet opening 103 without having passed through one of the filter elements 120, 121.

[0058] According to the invention, the extractor hood 1 has an air guide device 13. The air guide device 13 can preferably be moved relative to the extractor hood housing 10, in particular pulled forward and pushed backward. For this purpose, the air guide device 13 is slidably connected to the underside of the extractor hood housing 10, for example, via guides (not shown). The guides can be guide rails. Figures 1 and 2 The air guide device 13 is shown in its extended state. In this state, which can also be described as a first operating state of the extractor hood 1, the air guide device 13 projects partially forward beyond the front of the extractor hood housing 10, in particular the wall 102 and the front of the kitchen wall cabinet 31.

[0059] According to the invention, the air guide device 13 comprises an upper air guide element 130 and a lower air guide element 131. The air guide elements 130 and 131 each represent a surface element. In the first embodiment of the extractor hood 1 shown, the upper air guide element 130 consists of a flat base plate 1300. When the air guide device 13 is extended, the entire base plate 1300 can project forward beyond the front of the extractor hood housing 10, in particular the wall 102. However, it is also within the scope of the invention that a rear portion of the upper air guide element 130 lies below the extractor hood housing 10, in particular the wall 102, and thus also below the kitchen wall cabinet 31, even when the air guide device 13 is extended.This rear part of the air guide element 130 is preferably smaller than the part of the air guide element 130 that projects forward beyond the front of the extractor hood housing 10, in particular the wall 102, when pulled out.

[0060] In the illustrated embodiment, the lower air guide element 131 has an angled shape. Specifically, the air guide element 131 consists of a flat base plate 1310 and a rear deflection section 1311 adjoining the rear of the base plate 1310. This deflection section 1311 can be formed, for example, by edging or bending. In the illustrated embodiment, the deflection section 1311 projects upwards at an angle of less than 90° relative to the surface of the base plate 1310. The free end, i.e., the rear end of the deflection section 1311 of the lower air guide element 131, lies between the front filter element 121 and the rear filter element 120 when the air guide device 13 is extended.

[0061] The upper and lower air guide elements 130, 131 are arranged relative to each other such that a front gap 1320 is formed between the front face of the base plate 1300 of the upper air guide element 130 and the front face of the base plate 1310 of the lower air guide element 131. In the embodiment shown, this front gap 1320 is inclined slightly forward to the vertical. As can be seen from Figure 1 As a result, in addition to the front gap 1320, lateral gaps 1321 are also formed between the upper and lower air guide elements 130, 131. Thus, in the first embodiment of the extractor hood 1 shown, a U-shaped continuous extraction gap 132 exists between the upper and lower air guide elements 130, 131, which is formed from the front gap 1320 and the lateral gaps 1321.

[0062] In the illustrated embodiment, the depth of the upper air guide element 130 is less than the depth of the lower air guide element 131. Due to these different depths and the arrangement of the front edges of the air guide elements 130 and 131, where the front edge of the upper air guide element 130 projects only slightly further forward than the front edge of the lower air guide element 131, an outlet opening 1322 is formed between the rear edge of the upper air guide element 130 and the rear edge of the lower air guide element 131, particularly the rear deflection area 1311. This outlet opening is directed upwards. The outlet opening 1322 is located in Figure 2 indicated by a dotted line.

[0063] The functioning of the first embodiment of the extractor hood 1 according to the invention Figures 1 and 2 will be with reference to the Figures 3 and 4 explained in more detail. In the Figures 3 and 4Only the reference symbols necessary for identifying the components of the extractor hood are used.

[0064] In the Figure 3 The extractor hood 1 with the air guide device 13 is shown in the extended position. As can be seen from the indicated air currents in the Figure 3As a result, cooking fumes W, generated on the cooktop 2, are drawn upwards by a fan (not shown) housed in the extractor hood 10. Specifically, fumes W rising from the rear cooking zones of the cooktop 2 are drawn towards the rear filter element 120. Fumes W generated by cooking on the front cooking zones of the cooktop 2 initially rise upwards and are then drawn into the air guide 13 via the extraction gap 132. Here, the vapor initially flows from the front gap 1320 between the base plates 1300 and 1310 of the air guide elements 130, 131 and reaches the outlet opening 1322. The vapor exiting this outlet opening 1322 is guided through the rear deflection area 1312 and the front area of ​​the wall 102 of the inlet area 101 to the front filter element 121.

[0065] In the Figure 4The first embodiment of the extractor hood 1 is shown in a state in which the air guide device 13 is inserted. In this state, the front edge of the air guide device 13 lies below the kitchen wall cabinet 31 and preferably below the front edge of the extractor hood housing 10, in particular the front wall 102. Thus, the extraction gap 132 also lies below the kitchen wall cabinet 31 and preferably below the front edge of the extractor hood housing 10, in particular the front wall 102. The rear end of the lower air guide element 131 rests against the rear end of the inlet opening 103. In this position, the fumes drawn in through the extraction gap 132 are guided between the base plates 1300, 1310 and reach the outlet opening 1322.Due to the inserted position of the air guide device 13, this is located below the rear filter element 120 and can therefore pass through this filter element 120 into the interior of the upper part of the extractor hood housing 10. Furthermore, in the illustrated embodiment, there is a gap between the rear end of the upper air guide element 130 and the underside of the filter elements 120, 120, so that the fumes, after exiting the outlet opening 1322, can at least partially flow to the front filter element 121 and pass through it.

[0066] In Figure 5A second embodiment of the extractor hood 1 according to the invention is shown. This differs from the first embodiment only in the shape of the upper air guide element 130. In the second embodiment, the upper air guide element 130 has a downwardly directed deflection area 1301 at the front of the base plate. The front end of the deflection area 1301 lies on the same plane as the front end of the lower air guide element 131, but offset forward of it. Thus, the extraction gap 132 in the second embodiment is horizontal.

[0067] In addition to the front deflection area 1301, lateral deflection areas (in Figure 5(not shown) are provided. These extend outwards and downwards from the lateral edges of the base plate 1300 and preferably also terminate on the plane of the base plate 1310 of the lower air guide element 131. The gap between the lateral edges of the base plate 1310 of the lower air guide element 131 and the lower edges of the lateral deflection areas 103 forms lateral gaps through which air can enter between the air guide elements 130 and 131. In the second embodiment of the extractor hood, these lateral gaps can be horizontal.

[0068] The flow of the steam to and through the air guide 13 corresponds to the flow described for the first embodiment. Furthermore, preferably also in the second embodiment of the extractor hood 1, the air guide 13 can be positioned opposite the one described in Figure 5The position shown is pulled out and inserted.

[0069] In the Figures 6 and 7 The figures show schematic embodiments of the air guide device 13. Only the air guide elements 130, 131 are shown. Guides or other components that may be provided on the air guide element 13 are not shown in the figures.

[0070] In the Figures 6a and 6bFigure 1 shows an embodiment of the air guide device 13 for a cooker hood 1 according to the invention. This embodiment of the air guide device 13 is hereinafter referred to as the third embodiment of the air guide device 13. In this embodiment, the lower air guide element 131 has a base plate 1310 with an upwardly inclined deflection area 1312 adjoining the rear. The upper air guide element 130 has a front and two lateral deflection areas 1301, 1302, which extend downwards from the base plate 1300. As can be seen from Figure 1, the air guide element 131 has a base plate 1310 with an upwardly inclined deflection area 1312 adjoining the rear. Figure 6bAs a result, in this embodiment of the air guide device 13, the lower air guide element 131 also projects beyond the rear of the upper air guide element 130. In particular, a portion of the rear deflection area 1311 projects beyond the rear of the upper air guide element 130. The front edge of the lower air guide element 131 is offset rearward at a distance from the front edge of the front deflection area 1301 of the upper air guide element 130. Furthermore, the width of the lower air guide element 131 is less than the width of the upper air guide element 130. This creates a front and a side gap, which together form a horizontal extraction gap.

[0071] In the Figures 7a and 7b A fourth embodiment of the air guide device is shown. This embodiment differs from the third embodiment of the Figure 6This is achieved because the upper air guide element 130 has no lateral deflection areas and the width of the upper and lower air guide elements 130, 131 is the same. Thus, in this embodiment of the air guide device 13, the lateral gaps are vertical, while the front gap is horizontal.

[0072] Finally, it shows Figure 8 A state-of-the-art extractor hood. This extractor hood has an extractor housing D with a grease filter and a vapor screen S. The vapor screen W consists of a plate that partially extends beyond the front of the extractor housing D.

[0073] The extractor hood according to the invention can have an air guide device consisting of two parallel plates, which can also be referred to as panels. The panels are separated from each other by a gap that allows fumes to be drawn in between the panels. This drawing in occurs both through a front gap and from the sides. The fumes can be drawn in from the front and / or from the sides of the panels. Alternatively, the fumes can be drawn in from below.

[0074] The present invention increases the vapor capture rate of a range hood, in particular a built-in hood. Reference symbol list

[0075] 1 Extractor hood 10 Extractor housing 100 Extraction opening 101 Inlet area 102 Wall inlet area 103 Inlet opening 11 Exhaust pipe 12 Filter unit 120 Filter element (rear) 121 Filter element (front) 13 Air guide device 130 Upper air guide element 1300 Base plate 1301 Deflection area (front) 1302 Deflection area (side) 131 Lower air guide element 1310 Base plate 1311 Deflection area (rear) 132 Intake gap 1320 Gap (front) 1321 Gap (side) 1322 Outlet opening 2 hobs 30 Kitchen base cabinet 31 Kitchen wall cabinet Extractor hood housing (state of the art) Lawn screen (state of the art) Grease filter (state of the art) Lawn

Claims

1. Extractor hood comprising an extractor housing (10) having an extraction opening (100) in the underside and in which at least one filter unit (12) is arranged offset upwards towards the extraction opening (100), and an air guide device (13), characterized by the fact that the air guide device (13) is displaceable relative to the extractor hood housing (10), the air guide device (13) has an upper air guide element (130), a lower air guide element (130), an outlet opening (1322) and an intake gap (132), wherein the outlet opening (1322) is formed in the rear area of ​​the air guide device (13) and faces the filter unit (12), and the intake gap (132) is formed by a gap (1320) between the front edges of the upper and lower air guide elements (130, 131) and a gap (1321) between the side edges of the upper air guide element (130) and the corresponding side edges of the lower air guide element (131).

2. Extractor hood according to claim 1, wherein the outlet opening (1322) is located in the surface of the filter unit (12) in a vertical projection from below.

3. Extractor hood according to one of claims 1 or 2, wherein the air guide device (13) is displaceable between a pushed-in and a pulled-out position and in each of these two positions of the air guide device (13) the outlet opening (1322) is located in the surface of the filter unit (13) in a vertical projection from below onto the filter unit (13).

4. Extractor hood according to one of claims 1 to 3, wherein the intake gap (132) forms a continuous U-shaped gap.

5. Extractor hood according to one of claims 1 to 4, wherein the intake gap (132) is at least partially horizontal.

6. Extractor hood according to one of claims 1 to 5, wherein the intake gap (132) is at least partially vertical.

7. Extractor hood according to one of claims 1 to 6, wherein the upper and lower air guide element (130, 131) each have a base plate (1300, 1310) and the lower air guide element (131) has a deflection area (1311) directed upwards from the rear edge of the base plate (1310).

8. Extractor hood according to one of claims 1 to 7, wherein the upper and lower air guide element (130, 131) each have a base plate (1300, 1310) and the upper air guide element (130) has a deflection area (1301) directed downwards from the front edge of the base plate (1301).

9. Extractor hood according to one of claims 1 to 8, wherein the air guide device (13) has a depth that at least corresponds to the depth of the filter unit (12) and the air guide device (13) has a width that at least corresponds to the width of the filter unit (12).

10. Extractor hood according to one of claims 1 to 9, wherein the extractor housing (10) tapers from the extraction opening (100) to the filter unit (12).

11. Extractor hood according to one of claims 1 to 10, wherein the filter unit (12) has two filter elements (120, 121), wherein the outlet opening (1322) is aligned with one filter element (12) in the retracted position of the air guide device (13) and is aligned with the other filter element (12) in the extended position of the air guide device (13).

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