WO2024099902A1

WO2024099902A1 - Cooker hood and filter assembly thereof

Info

Publication number: WO2024099902A1
Application number: PCT/EP2023/080672
Authority: WO
Inventors: Yanchao SHI; Zhaoyang Xia
Original assignee: BSH Hausgeräte GmbH
Priority date: 2022-11-07
Filing date: 2023-11-03
Publication date: 2024-05-16
Also published as: CN219367716U

Abstract

This application provides an improved cooker hood and a filter assembly thereof. Embodiments of this application provide a filter assembly for a cooker hood, including a filter screen (1) and an oil cup (2). The filter screen (1) is provided with several air intake holes (10) for oil fume to flow through. The oil cup (2) is configured to collect grease filtered out by the filter screen (1). The filter screen (1) and the oil cup (2) are integrated into one structure. Therefore, the stability of the oil cup can be improved.

Description

COOKER HOOD AND FILTER ASSEMBLY THEREOF

TECHNICAL FIELD

This application relates to the field of cooker hoods.

BACKGROUND

In the Asian region, due to the traditional cooking habit of stir-frying, the grease content in the smoke generated during cooking is particularly high. Therefore, cooker hoods for extracting the oil fume generated during cooking have become an essential household appliances of daily life at home. An oil cup of a cooker hood is generally hung on a fume collecting hood. When a user wipes and cleans the cooker hood, it is likely to touch the oil cup, causing the oil cup to fall, which brings many troubles to the user.

Unless supported by sufficient evidence, the prior art described herein is not an admission that the prior art was known to a person of ordinary skill in the art to which this application relates before the filing date of this application.

SUMMARY

An objective of embodiments of this application is to provide an improved cooker hood and a filter assembly thereof for at least one technical problem above and/or other possible technical problems not mentioned in this application.

According to a first aspect of this application, an embodiment of this application provides a filter assembly for a cooker hood, including a filter screen and an oil cup, where the filter screen is provided with several air intake holes for oil fume to flow through; the oil cup is configured to collect grease filtered out by the filter screen; and the filter screen and the oil cup are integrated into one structure. Therefore, the stability of the oil cup can be improved.

In a possible design, the filter screen and the oil cup are formed on the same metal plate; the filter screen is plate-shaped; an outer wall of the oil cup protrudes out of a plane where an outer surface of the filter screen is located; and an exposure of the oil cup faces a plane where an inner surface of the filter screen is located.

In a possible design, an edge of the metal plate is folded up to form an oil retaining flange; and the oil retaining flange is configured to guide the grease to flow to the exposure of the oil cup. Therefore, the collection of the grease is facilitated. In a possible design, a first fixing member is included, where one end of the first fixing member is attached to and fixed on an inner wall of the oil cup, and an other end extends out of the oil cup to form a free end.

In a possible design, the free end is hook-shaped.

In a possible design, the oil cup is provided with a window through hole; the first fixing member is a transparent member; and when the first fixing member is attached to and fixed on the inner wall of the oil cup, the first fixing member blocks the window through hole. The first fixing member is also used as a window, which has a simple structure and helps to reduce manufacturing costs.

In a possible design, the oil cup is strip-shaped.

In a possible design, the several air intake holes are all strip-shaped and extend toward the oil cup; and the several air intake holes are each provided with an oil guiding flange. Therefore, the collection of the grease is facilitated.

In a possible design, the filter screen is arranged in an array with a plurality of curved surfaces arching from the outer surface of the filter screen to the inner surface of the filter screen; and each curved surface is provided with at least one air intake hole.

In a possible design, the curved surface is spherical crown-shaped.

According to a second aspect of this application, an embodiment of this application provides a cooker hood. The filter assembly as described in any one of the above is disposed in the cooker hood, where the filter assembly is disposed obliquely downward from front to back; and the oil cup is disposed at the lowest position of the filter assembly.

It should be noted herein that the terms "outer surface", "inner surface", "disposed obliquely downward from front to back", "lowest position", "bottom view", "front view", "above " and other directional expressions, if not specified, are based on the usual use state of the cooker hood.

It should be noted herein that "first" and "second" appearing in this specification are only for descriptive purposes, and are not used to indicate relative importance; Moreover, it is not a definition of the number of features it defines. In addition, it is not a definition of the logical or sequential relationship of the features it defines.

The content of the above technical solutions of this application is not intended to describe all possible implementations of this application. Throughout this application, guidance is provided in several places by listing examples that can be used in every possible combination. BRIEF DESCRIPTION OF THE DRAWINGS

The following figures are only intended to give schematic illustrations and explanations, but do not limit the scope of this application, where:

FIG. 1 is a schematic structural view of an embodiment of a cooker hood according to this application;

FIG. 2 is a bottom view of the embodiment of the cooker hood shown in FIG. 1;

FIG. 3 is a sectional view of the embodiment of the cooker hood shown in FIG. 1;

FIG. 4 is an enlarged view of a local structure at B in FIG. 3;

FIG. 5 is an enlarged view of a local structure at C in FIG. 3;

FIG. 6 is a schematic structural view of a filter assembly of the embodiment of the cooker hood shown in FIG. 1 ;

FIG. 7 is another schematic structural view of the filter assembly of the embodiment of the cooker hood shown in FIG. 1 ;

FIG. 8 is another schematic structural view of the filter assembly of the embodiment of the cooker hood shown in FIG. 1 ;

FIG. 9 is a sectional view along line A-A in FIG. 8;

FIG. 10 is an enlarged view of a local structure at B in FIG. 9;

FIG. 11 is a schematic structural view of an embodiment of a filter assembly for a cooker hood according to this application;

FIG. 12 is a sectional view along line A-A in FIG. 11;

FIG. 13 is an enlarged view of a local structure at B in FIG. 12;

FIG. 14 is an enlarged view of a local structure at C in FIG. 12;

FIG. 15 is a schematic structural view of another embodiment of a cooker hood according to this application;

FIG. 16 is a front view of the embodiment of the cooker hood shown in FIG. 15;

FIG. 17 is a schematic structural view of another embodiment of a filter assembly for a cooker hood according to this application;

FIG. 18 is a sectional view along line A-Ain FIG. 17; and

FIG. 19 is an enlarged view of a local structure at C in FIG. 18.

Reference numerals:

1-filter screen, 2-oil cup, 3-front wall, 4-rear wall, 5-left wall, 6-right wall, 7-bottom wall, 8-window through hole, 9-oil retaining flange, 10-air intake hole, 11 -first fixing member, 12-second fixing member, 13-curved surface, 14-outer surface, 15-inner surface, 16-inner filter screen, 17-gui ding wall, 18-casing, 19-fan, 20-fume collecting hood.

DETAILED DESCRIPTION

In order to make the purpose, scheme and beneficial effect of this application clearer, this application will be further described below in conjunction with the accompanying drawings and preferred embodiments.

An embodiment of a cooker hood provided by this application includes a casing 18, a fan 19, a fume collecting hood 20, and a filter assembly, as shown in FIG. 1 to FIG. 5. The cooker hood is suitable for being hung on a wall of a kitchen. The fan 19 is disposed in the casing 18. The casing 18 is disposed above the fume collecting hood 20. The fume collecting hood 20 is provided with an airflow inlet, and an inner filter screen 16 is disposed at the airflow inlet. The filter assembly is also disposed at the airflow inlet of the fume collecting hood 20. Specifically, the inner filter screen 16 is disposed inside the filter assembly, and the filter assembly is detachably fixed to the inner filter screen 16.

The filter assembly includes a filter screen 1 and an oil cup 2. The filter screen 1 is provided with several air intake holes 10 for oil fume to flow through. The oil cup 2 is configured to collect grease filtered out by the filter screen 1. The filter screen 1 and the oil cup 2 are integrated into one structure. In other words, the filter screen 1 and the oil cup 2 are formed as one component, installed together, and disassembled together. Therefore, the case that the oil cup 2 is touched and dropped when the filter screen 1 is being wiped is fundamentally avoided, and the stability of the oil cup 2 is improved. Moreover, the filter screen 1 and the oil cup 2 being integrated into one structure not only helps to reduce gaps to facilitate cleaning, but also helps to reduce manufacturing costs. In addition, for this embodiment, the integrated piece of the filter screen 1 and the oil cup 2 is suitable for being washed in a dishwasher, which brings great convenience to users.

The filter assembly is disposed obliquely downward from front to back, as shown in FIG. 3. The "front to back" direction is shown by arrow Q in FIG. 3. Arrow P in FIG. 3 represents the back to front direction. The oil cup 2 is disposed at the lowest position of the filter assembly. When the cooker hood is installed and used, the oil cup 2 is closer to the wall of the kitchen than the filter screen 1. Therefore, the grease filtered out by the filter assembly gathers towards the oil cup 2 under the action of gravity, and finally flows into the oil cup 2.

The filter screen 1 and the oil cup 2 are formed on the same metal plate; specifically, the filter screen 1 and the oil cup 2 are integrally formed by stamping the metal plate. The filter screen 1 is plate-shaped. An outer wall of the oil cup 2 protrudes out of a plane where an outer surface 14 of the filter screen 1 is located, as shown in FIG. 6 to FIG. 10. The oil cup 2 is groove-shaped as a whole, and includes a front wall 3, a rear wall 4, a left wall 5, a right wall 6, and a bottom wall 7. An exposure of the oil cup 2 faces a plane where an inner surface 15 of the filter screen 1 is located.

An edge of the metal plate is folded up to form an oil retaining flange 9, as shown in FIG. 7. The oil retaining flange 9 is configured to guide the grease to flow to the exposure of the oil cup 2, especially in the case that "the filter assembly is disposed obliquely downward from front to back".

The filter assembly includes a first fixing member 11. One end of the first fixing member 11 is attached to and fixed on an inner wall of the oil cup 2, and an other end extends out of the oil cup 2 to form a free end. The free end is used to achieve the fixing function. Specifically, the free end is hook-shaped, as shown in FIG. 4, FIG. 7, FIG. 9, and FIG. 10. The hook-shaped free end is in an inverted L shape, as shown in FIG. 7.

The inner filter screen 16 is disposed obliquely downward from front to back, as shown in FIG. 3. The top of the inner filter screen 16 is disposed with a second fixing member

12, as shown in FIG. 5. Specifically, the second fixing member 12 is a permanent magnet. The bottom of the inner filter screen 16 is provided with a hanging hole, and an edge of the hanging hole is provided with a guiding wall 17, as shown in FIG. 4. The hook-shaped free end is configured to be inserted into the hanging hole from top to bottom along the guiding wall 17. Then, the top of the filter assembly rotates upwards, that is, the filter screen 1 approximately rotates upwards around the oil cup 2 until a top area of the filter screen 1 is attached to the permanent magnet at the top of the inner filter screen 16, and the top area of the filter screen 1 is magnetically adsorbed by the permanent magnet at the top of the inner filter screen 16, as shown in FIG 5. In this case, the fixing of the filter assembly is completed, as shown in FIG. 3.

The oil cup 2 is strip-shaped. The oil cup 2 is provided with a window through hole 8. Specifically, the window through hole 8 is provided on the front wall 3 of the oil cup 2. The first fixing member 11 is a transparent member. When the first fixing member 11 is attached to and fixed on the inner wall of the oil cup 2, the first fixing member 11 blocks the window through hole 8, as shown in FIG. 4. Specifically, the first fixing member 11 is fixed to the inner wall of the oil cup 2 after the filter screen 1 and the oil cup 2 are integrally formed. It should be noted herein that the transparency of the first fixing member 11 needs to enable users to observe the grease status in the oil cup 2 through the first fixing member 11. The several air intake holes 10 are strip-shaped and extend toward the oil cup 2, as shown in FIG. 6 to FIG. 8. The several air intake holes 10 are each provided with an oil guiding flange. Specifically, the air intake hole 10 is shown by reference numeral 10 in FIG. 8, there are eighteen air intake holes 10 in total in FIG. 8, and only one of them is exemplarily marked.

The above is only an embodiment of this application, and some technical features may be added, deleted, modified, or replaced to obtain other embodiments. For example, alternatively, the filter assembly is configured to be detachably fixed to the fume collecting hood 20. Specifically, no inner filter screen is disposed, and the filter assembly is directly and detachably fixed to a wall body of the fume collecting hood 20.

In another example, alternatively, the permanent magnet is disposed on the top area of the filter screen 1. When the top area of the filter screen 1 is attached to the top of the inner filter screen 16 or the fume collecting hood 20 itself, the fixing is completed under the magnetic adsorption of the permanent magnet.

In another example, alternatively, the filter screen 1 is arranged in an array with a plurality of curved surfaces 13 arching from the outer surface 14 of the filter screen 1 to the inner surface 15 of the filter screen 1, as shown in FIG. 11 to FIG. 14. The filter screen 1 and the oil cup 2 are formed on the same metal plate. Specifically, the filter screen 1 and the oil cup 2 are integrally formed by stamping the metal plate. The filter screen 1 is plate-shaped. Each curved surface 13 is formed by stamping the metal plate from the outer surface 14 of the filter screen 1 to the inner surface 15 of the filter screen 1. Each curved surface 13 is spherical crown-shaped. Each curved surface 13 is provided with a plurality of air intake holes 10. Some curved surfaces 13 are provided with five air intake holes 10, and some curved surfaces 13 are provided with six air intake holes 10, as shown in FIG. 11. The filter screen 1 disposed in this way makes an airflow passing through the filter screen 1 transition at the laminar flow boundary near the wall, and after the transition, there is a stronger momentum exchange between the inside of the turbulent boundary layer and the mainstream area, which greatly enhances the anti-separation effect of the turbulent boundary layer, so that the separation point is delayed, the energy loss is reduced, the wind speed is faster, and the rectification and noise reduction effects are better.

In another example, alternatively, the inclination of the filter assembly is further improved, and the shape of the fume collecting hood 20 is also adjusted adaptively, as shown in FIG. 15 and FIG. 16. In order to facilitate the storage of the grease, the shape of the oil cup 2 is also optimized and improved accordingly, as shown in FIG. 17 to FIG. 19. For the enlarged view of the local structure at B in FIG. 18, refer to FIG. 13.

Components of different embodiments can be combined in any feasible way to achieve the purpose of this application.

It should be noted that this application should not be construed as being limited to the above-described implementations, but should be construed as covering all possible implementations determined by the claims of this application in combination with the disclosures in the specification. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of this application without departing from the content of this application falls within the protection scope of this application.

Claims

CLAIMS What is claimed is:

1. A filter assembly for a cooker hood, characterized by comprising a filter screen (1) and an oil cup (2), wherein the filter screen (1) is provided with several air intake holes (10) for oil fume to flow through; the oil cup (2) is configured to collect grease filtered out by the filter screen (1); and the filter screen (1) and the oil cup (2) are integrated into one structure.

2. The filter assembly according to claim 1, characterized in that: the filter screen (1) and the oil cup (2) are formed on the same metal plate; the filter screen (1) is plate-shaped; an outer wall of the oil cup (2) protrudes out of a plane where an outer surface (14) of the filter screen (1) is located; and an exposure of the oil cup (2) faces a plane where an inner surface (15) of the filter screen (1) is located.

3. The filter assembly according to claim 2, characterized in that: an edge of the metal plate is folded up to form an oil retaining flange (9); and the oil retaining flange (9) is configured to guide the grease to flow to the exposure of the oil cup (2).

4. The filter assembly according to claim 1, characterized by comprising a first fixing member (11), wherein one end of the first fixing member (11) is attached to and fixed on an inner wall of the oil cup (2), and an other end extends out of the oil cup (2) to form a free end.

5. The filter assembly according to claim 4, characterized in that: the free end is hook-shaped.

6. The filter assembly according to claim 4, characterized in that: the oil cup (2) is provided with a window through hole (8); the first fixing member (11) is a transparent member; and when the first fixing member (11) is attached to and fixed on the inner wall of the oil cup (2), the first fixing member (11) blocks the window through hole (8).

7. The filter assembly according to claim 2, characterized in that: the oil cup (2) is strip-shaped.

8. The filter assembly according to any one of claims 1 to 7, characterized in that: the several air intake holes (10) are all strip-shaped and extend toward the oil cup (2); and the several air intake holes (10) are each provided with an oil guiding flange.

9. The filter assembly according to any one of claims 1 to 7, characterized in that: the filter screen (1) is arranged in an array with a plurality of curved surfaces (13) arching from the outer surface (14) of the filter screen (1) to the inner surface (15) of the filter screen (1); and each curved surface (13) is provided with at least one air intake hole (10).

10. The filter assembly according to claim 9, characterized in that: the curved surface (13) is spherical crown-shaped.

11. A cooker hood, characterized in that: the filter assembly according to any one of claims 1 to 10 is disposed in the cooker hood, wherein the filter assembly is disposed obliquely downward from front to back; and the oil cup (2) is disposed at the lowest position of the filter assembly.