extractor hood

Abstract

A cooker hood (1) comprising a frame (11) with an air inlet opening (110) in the underside and a passage opening (113) in a cover wall (111) above the air inlet opening (110), at least one filter element (13) and at least one baffle plate (12), the baffle plate (12) covering the passage opening (113), an edge gap (16) being formed between the baffle plate (12) and the frame (11), and the filter element (13) being arranged in the frame (11) above the baffle plate (12), characterized in that the passage opening (113) is smaller than the air inlet opening (110), and that the cooker hood (1) comprises at least one strip (15) which covers at least part of the distance between the edge of the passage opening (113) and the outer edge of the cover wall (111) and which is detachably attached to the frame (11) is attached.

Description

[0001] The present invention relates to a range hood with perimeter extraction according to the preamble of claim 1.

[0002] From DE 10 2015 100 207 A1, a cooker hood is known which comprises at least one housing unit with at least one intake section. A filter unit and a decorative unit are associated with the intake section. The decorative unit includes a fastening device by means of which the decorative unit can be attached to the housing unit on the intake section.

[0003] DE 10 2015 100 557 A1 describes a cooker hood comprising a housing with an intake section. A filter area is provided at the intake section, which is supplied by a filter device. Furthermore, a flow inlet section for the extracted fumes is provided at the intake section.

[0004] DE 10 2009 059 836 A1 discloses a filter unit for a cooker hood, which has a filter element that at least partially covers the extraction opening of the cooker hood. The filter unit includes an air guide plate that at least partially surrounds the filter element. Furthermore, the filter unit includes a baffle plate that is connected to the air guide plate and completely covers the filter surface of the filter element.

[0005] From DE 10 2008 020 149 A1, a filter unit with a filter element for a cooker hood is known. The filter unit has a vapor deflector plate which at least partially holds the filter element.

[0006] In perimeter extraction cooker hoods, a baffle plate is positioned in or in front of an air intake opening in the housing. Air is drawn into the cooker hood through the gap formed between the baffle plate and the housing. A filter element, specifically a grease filter, is located above the baffle plate. The contaminant-laden airflow only reaches this filter element after being deflected in the intake area, i.e., after passing through the gap. Consequently, a large portion of the contaminants contained in the airflow will be deposited on the housing before the airflow reaches the filter element.

[0007] The user can usually remove the filter element from the extractor hood for cleaning. However, the housing must be cleaned while installed, for example by wiping it down. This is particularly difficult with ceiling-mounted extractor hoods.

[0008] The present invention is therefore based on the objective of creating a cooker hood that can be cleaned easily. The invention is based on the finding that this objective can be achieved by providing at least one removable cover element in the airflow area of ​​the housing.

[0009] The problem is therefore solved by a range hood comprising a frame with an air inlet opening in the underside and a passage opening in a top panel above the air inlet opening, at least one filter element, and at least one baffle plate. The baffle plate covers the passage opening, a gap is formed between the baffle plate and the frame, and the filter element is arranged in the frame above the baffle plate. The range hood is characterized in that the passage opening is smaller than the air inlet opening, and that the range hood includes at least one strip that covers at least part of the gap between the edge of the passage opening and the outer edge of the top panel and is detachably attached to the frame.

[0010] Directional terms such as top and bottom refer - unless otherwise stated - to a cooker hood in its installed state, where the air intake opening is horizontal.

[0011] The extractor hood comprises a frame, at least one filter element, and at least one baffle plate. In one embodiment, the frame can form the outer housing of the extractor hood. Preferably, however, the frame is enclosed within an outer housing. Therefore, the frame is also referred to as the inner frame in the following.

[0012] The frame preferably has a side wall, which, for example, consists of four side walls. The lower edge of the side wall forms the air inlet. The side wall can run vertically. However, it is also within the scope of the invention for the side wall to be inclined inwards from the vertical, meaning that the side walls each form an acute angle with the air inlet. A wall parallel to the air inlet can be attached to the upper edge of the side wall. This wall is called the cover wall. A passage opening is provided in the cover wall. In the embodiment with an inclined side wall, the side wall can form the cover wall. In this embodiment, the upper edge of the side wall forms the passage opening. The invention is described below with reference to an embodiment of the frame with a vertically running side wall.The through-hole is smaller than the inflow opening.

[0013] The at least one filter element is a grease filter element and can, for example, be a filter cassette that has expanded metal layers as filter material.

[0014] The baffle plate is smaller than the size of the frame's airflow opening. The baffle plate is located within the airflow opening or is offset downwards from it. This creates a gap between the baffle plate and the frame, preferably extending around the entire baffle plate. Air can enter the interior of the frame and thus the extractor hood through this gap. The area between the gap and the airflow opening is called the intake area. The baffle plate is at least as large as the airflow opening. Preferably, the baffle plate is larger than the airflow opening. The baffle plate is positioned to cover the airflow opening, making it invisible to the user of the extractor hood.

[0015] The filter element is arranged in the frame above the baffle plate. Preferably, the filter element is located in the passage opening.

[0016] According to the invention, the extractor hood comprises at least one strip. The strip can also be referred to as a cover element. The strip covers at least part of the distance between the edge of the opening and the outer edge of the top panel. In the embodiment where the frame has a vertically extending side wall to which the top panel is attached, the strip preferably extends between the edge of the opening and the side wall. In the embodiment where the frame is formed only by the top panel, which is an inclined side wall, the strip preferably extends from the opening to the intake opening. The dimension of the strip perpendicular to the edge of the opening is referred to as the width of the strip. According to the invention, the strip is detachably connected to the frame. The detachable connection is preferably one that can be released without tools.

[0017] In the present invention, at least part of the frame's top wall is covered by at least one strip, preventing contaminants from the intake air from accumulating on the frame in this area. In particular, the top wall forms the part of the intake area where the airflow must be deflected from the edge gap to the opening. In this part of the intake area, a large quantity of contaminants is separated from the airflow due to inertia. In the extractor hood according to the invention, these contaminants are at least partially deposited on the at least one strip. Because the strip is detachably attached to the extractor hood, it can be removed for cleaning. The strip, like the filter element, can then be cleaned, for example, in a dishwasher.This reduces the amount of contaminants that accumulate on the frame and that the user has to remove, for example by wiping.

[0018] According to one embodiment, the strip has a length corresponding to either the width or the depth of the frame. The width is defined as the larger horizontal dimension of the frame, and the depth as the correspondingly smaller horizontal dimension. By having such a length, the strip can completely cover the top wall in one of these directions. Preferably, the strip has a width that is less than the other dimension of the frame. If the length of the strip corresponds to the width of the frame, then the width of the strip is less than the depth of the frame. If the length of the strip corresponds to the depth of the frame, then the width of the strip is less than the length of the frame.

[0019] The strip preferably extends along the opening. This embodiment, in which the strip is adjacent to the opening, has the advantage that the strip can be attached to the opening. Furthermore, in the area of ​​the opening, the airflow is deflected further in the intake area, and the resulting deposits can settle on the strip and thus not on the frame. In one embodiment, the strip covers the entire surface between the opening and the outer edge of the surface, either in the width or depth of the frame. This maximizes the area covered by the strip and thus increases the amount of contaminants that settle on a removable part of the extractor hood.

[0020] According to one embodiment, the extractor hood has two strips extending along opposite edges of the opening in the top panel. This arrangement of the strips leaves the portion of the top panel between them, within the opening, uncovered and therefore available for other uses. In particular, this area can accommodate mountings for the baffle plate, lighting fixtures, or control units. The strips preferably form a rectangular surface. However, it is also possible to design the strips with projections along their longitudinal edges that extend towards the other strip. These projections can be located, for example, at the ends of the strips.The dimension of the projections along the length of the strip is smaller than the distance between the opening and the edge of the frame in that direction. This allows the section of the cover wall near the opening to be free and, for example, accommodate fastening elements for the impact plate. Alternatively, the projections can be positioned near the opening and at a distance from the end face of the strip. This allows for the inclusion of fastening elements for the impact plate in the edge area of ​​the cover wall.

[0021] According to one embodiment, the at least one strip has a bevel on one side, and this bevel projects into the opening. A bevel is defined here as a widening at the edge of the strip that is bent outwards from the surface of the strip. This bevel serves two purposes: firstly, it allows the strip to be attached to the frame; and secondly, it prevents the accumulation of contaminants at the transition between the frame and the top wall and the opening.

[0022] The strip can be attached to the frame by means of the bend, for example, by providing locking elements on the bend that engage in recesses provided in a wall of the frame surrounding the opening. According to a preferred embodiment, however, a filter element is detachably attached in the opening, and the bend is held between the edge of the opening and the edge of the filter element. In particular, the bend can be clamped between the filter element and the edge of the opening. Additionally or alternatively, recesses can be provided in the bend. Preferably, fastening elements, in particular protruding lugs and / or retractable grip pins, are provided on the filter element. If the recesses in the bend are aligned with the lugs and / or retractable grip pins, these can pass through the recesses, thus holding the strip to the frame.

[0023] According to the invention, it is also possible to attach the strip or strips to the frame in another way. For example, magnets can be provided on the frame.

[0024] The at least one strip is preferably made of plastic or metal. The strip has a thickness that ensures its dimensional stability. The advantage of using a plastic or metal strip is that the required thickness for dimensional stability is minimal, thus only slightly reducing the intake area. Furthermore, a dimensionally stable strip is easier to handle and attach to the frame than a strip made of, for example, non-woven fabric. Particularly with a metal strip, it is advantageous that the required shape can be easily produced by punching, milling, and / or bending, thereby simplifying manufacturing.

[0025] According to one embodiment, the at least one strip has a coating. The coating can give the surface a roughness that improves the adhesion of contaminants. This prevents contaminants from dripping off the strip. Alternatively or additionally, the coating can also be colored, thereby improving the visual appearance of the extractor hood.

[0026] According to a preferred embodiment, the extractor hood has, in addition to the frame, an outer housing in which the frame is received. The outer housing can be designed for mounting on or in a wall. Furthermore, the baffle plate can be attached to the outer housing, thus reducing the requirements for the frame. The weight of the baffle plate can be at least partially supported by the outer housing. The frame can therefore be made, for example, of a thin sheet metal or plastic. The outer housing is preferably made of metal and can thus securely hold the baffle plate, which can also be made of metal, glass, or plastic.

[0027] According to one embodiment, the impact plate is pivotally attached to the outer housing by hinges that project through the top wall of the frame. Preferably, there is no strip in the area where the hinges project through the top wall, or a corresponding recess is provided in the strip.

[0028] According to a preferred embodiment, the extractor hood is a ceiling fan. A ceiling fan is defined as an extractor hood whose extraction housing is mounted on or in the ceiling. The air intake opening is located in close proximity to the ceiling or is flush with it. In this type of extractor hood, the strips provided according to the invention are visible to the user. Thus, in this embodiment, the strips can be used as design elements and, for example, be a specific color.

[0029] The invention will be explained again below with reference to the accompanying drawings. These show: Fig. 1: a schematic diagram of a first embodiment of the extractor hood according to the invention; Fig. 2: a schematic diagram of a second embodiment of the extractor hood according to the invention; Fig. 3: a schematic exploded view of the underside of an embodiment of the extractor hood according to the invention; and Fig. 4 and Fig. 5: Schematic representations of embodiments of the strips used according to the invention; Fig. 6: a schematic bottom view of the embodiment of the extractor hood according to Fig. 3; and Fig. 7: a schematic sectional view of the embodiment of the extractor hood according to Fig. 3 and Fig. 6.

[0030] In Fig. Figure 1 shows a schematic diagram of an embodiment of the extractor hood 1 according to the invention. This embodiment is an extractor hood 1 that is mounted on the ceiling D, which represents the ceiling of, for example, the kitchen. This embodiment of the extractor hood 1 can also be referred to as a plug-and-play version.

[0031] In Fig. Figure 2 shows a further embodiment of the extractor hood 1 according to the invention. In this embodiment, the extractor hood 1 is installed in the ceiling D, in particular in an opening provided in the ceiling D. In this embodiment, the extractor hood 1 is preferably mounted such that its underside is flush with the ceiling D or protrudes only slightly below the ceiling. The embodiment of the extractor hood 1 shown in Fig. The variant shown in 2 is also called the Integrated variant.

[0032] In Fig. Figure 3 shows a schematic exploded view of the underside of an embodiment of the extractor hood 1 according to the invention. In the illustrated embodiment, the extractor hood 1 consists of an outer housing 10, a frame 11, a baffle plate 12, and two strips 15.

[0033] The outer casing 10 has a base 100 and downward-facing side walls 101. An outlet opening 102 is centrally located in the base 100. A blower (not shown) can be arranged above this outlet opening 102.

[0034] In the illustrated embodiment, the frame 11 has a top wall 111, which forms the base of the frame 11. Side walls 112 extend downwards from the top wall 111 at its edges. A passage opening 113 is provided in the top wall 111. In the illustrated embodiment, the passage opening 113 is surrounded by a boundary wall 1130 extending upwards from the top wall 111. The shape of this boundary wall 1130 is described with reference to Fig. 7 will be explained in more detail later. Recesses 114 are provided in the cover wall 111, through which hinges (not shown) can be guided for the pivotable attachment of the baffle plate 12 to the outer housing 10. Magnetic holders 115 are also provided on the cover wall 111, which can hold the side of the baffle plate 12 opposite the hinges. The lower edge of the side walls forms the air inlet 110 through which air can enter the extractor hood 1 and, in particular, the intake area 14.

[0035] The baffle plate 12 has a flat shape and, when assembled, lies in the air inlet opening 110. The size of the baffle plate 12 is smaller than the size of the air inlet opening 110, thus forming a marginal gap 16 (see Fig. 7).

[0036] In the illustrated embodiment, the strips 15 of the extractor hood 1 have a length corresponding to the width of the frame 11. A bend 150 is formed centrally on the side of each strip 15 facing the opening 113. The length of the bend 150 corresponds to the width of the opening 113 and is directed upwards.

[0037] In the Fig. Figure 6 is the embodiment of the extractor hood 1 made of Fig. Figure 2 shows the assembled form in a bottom view. In this view, the edge gap 16 is visible. Through this edge gap 16, a part of the strips 15 and a part of the edge of the cover wall 111, which is not covered by the strips 15, are visible.

[0038] In the Fig. 4 and Fig. Figure 5 shows further embodiments of the strips 15. In this embodiment, the strips 15 have projections 151 extending from their longitudinal edges into the surface of the strip. These projections 151 can serve to at least partially cover the portion of the cover wall 111 located between the strips 15. Preferably, two strips 15 are also used in this embodiment, and the projections 151 of the two strips 15 are directed towards each other.

[0039] In the Fig. Figure 7 is a schematic sectional view of the embodiment of the extractor hood 1 according to Fig. 2 and Fig. Figure 6 shows in more detail the boundary wall 1130 of the frame 11, which extends upwards at the edge of the passage opening 113. The boundary wall 1130 covers the distance between the top of the cover wall 111 and the underside of the base 100 of the outer housing 10. A shoulder 1131 is formed in the boundary wall 1130, against which a filter element (not shown) can be placed. From the shoulder upwards, the boundary wall 1130 extends in a hook shape and terminates at the outlet opening 102 of the outer housing 10.

[0040] The impact plate 12 is attached to the frame 11 via magnetic mounts 115. Additionally, the impact plate 12 is preferably attached to the outer housing 10 via hinges (not shown).

[0041] The height of the baffle plate 12 is less than the height of the side walls 112 of the frame. Thus, an intake area 14 is formed between the edge gap 16 and the opening 113, in which air drawn in by a fan (not shown) of the extractor hood 1 is directed. The strip 15 is attached to the top of the intake area 14, i.e., to the underside of the cover wall 111. This strip extends in the intersection area of ​​the Fig. 7 over the entire distance between the side wall 112 and the opening 113 of the frame 11. The bend 150 projects through the opening 113 and rests against the boundary wall 1130. By inserting the filter element, the strip 15 can be held against the frame 11.

[0042] In Fig.Figure 7 shows the schematic path of the intake behavior of the extractor hood 1 with respect to the grease-laden airflow. Due to the design of the extractor hood 1, the airflow is deflected by 90°. Because of inertia, a large proportion of the contaminants F, which are grease particles, are deposited on the frame 11 before they reach the permeable grease filter. If the strips 15 were not present, the grease would settle directly on the top wall 111 of the frame 11 and soil it.

[0043] The strips described in the present invention, which can also be referred to as insert strips or cover elements, are arranged in the intake area above the edge gap in such a way that they at least partially capture the separated grease droplets. The strips are easily removable and cleanable by the customer without additional tools and are included in the grease filter for grease measurement purposes. Since the insert strips are located in the inner frame of the extractor hood, which is preferably a ceiling-mounted fan, they are visible to the customer. Therefore, they can also be used, for example, as design elements.

[0044] The strips of the extractor hood according to the invention represent additional elements that, on the one hand, optimize the grease label and, on the other hand, can function as design elements.

[0045] In the extractor hood according to the invention, the permeable grease filter is located invisibly behind, i.e., above, the baffle plate. Due to their inertia, a large proportion of the grease droplets contained in the airflow are already separated in the intake area above the edge gap before they reach the grease filter. Without the strips according to the invention, these contaminants would thus be completely deposited on the frame of the extractor hood.

[0046] The present invention offers several advantages. Firstly, it allows for easy and user-friendly cleaning. Furthermore, it increases user satisfaction. The invention enables simple assembly during manufacturing and easy installation. Additionally, the insert strips can be removed for cleaning without any tools. The invention is applicable to all interior frames and ceiling ventilation units. The insert strips function as grease filters in grease measurement. Reference symbol list 1 extractor hood 10 outer casings 100 floor area 101 Side wall 102 Outlet opening 11 frames 110 Inlet opening 111 Ceiling wall 112 Side wall 113 Passage opening 1130 Boundary wall Paragraph 1131 114 recess 115 Magnetic holder 12 Impact plate 13 Filter element 14 Intake area 15 bar 150 Abbug 151 lead 16 Marginal gap D ceiling F Impurities

Claims

A cooker hood (1) comprising a frame (11) with an air inlet opening (110) in the underside and a passage opening (113) in a cover wall (111) above the air inlet opening (110), at least one filter element (13) and at least one baffle plate (12), the baffle plate (12) covering the passage opening (113), an edge gap (16) being formed between the baffle plate (12) and the frame (11), and the filter element (13) being arranged in the frame (11) above the baffle plate (12), characterized in that the passage opening (113) is smaller than the air inlet opening (110), and that the cooker hood (1) comprises at least one strip (15) which covers at least part of the distance between the edge of the passage opening (113) and the outer edge of the cover wall (111) and which is detachably attached to the frame (11) is attached. Extractor hood (1) according to claim 1 , characterized in that the strip (15) has a length which corresponds to the width of the frame (11) or the depth of the frame (11). Extractor hood (1) according to one of claims 1 or 2, characterized in that the extractor hood (1) has two strips (15) and these extend along opposite edges of the passage opening (113) on the top wall (111). Extractor hood (1) according to one of claims 1 to 3, characterized in that the at least one strip (15) has a bend (150) on one side and the bend (150) projects into the passage opening (113). Extractor hood (1) according to claim 4, characterized in that the filter element (13) is detachably attached in the passage opening (113) and the bend (150) is held between the edge of the passage opening (113) and the edge of the filter element (13). Extractor hood (1) according to one of claims 1 to 5, characterized in that the at least one strip (15) is made of plastic or metal. Extractor hood (1) according to one of claims 1 to 6, characterized in that the at least one strip (15) has a coating. Extractor hood (1) according to one of claims 1 to 7, characterized in that the extractor hood (1) has, in addition to the frame (11), an outer housing (10) in which the frame (11) is received. Extractor hood (1) according to claim 8, characterized in that the baffle plate (12) is pivotably attached to the outer housing (10) by hinges which extend through the cover wall (111) of the frame (11). Extractor hood (1) according to one of claims 1 to 9, characterized in that the extractor hood (1) is a ceiling fan.

Images