EP4134593A1

EP4134593A1 - Cooker hood and air duct holder thereof

Info

Publication number: EP4134593A1
Application number: EP22184980.5A
Authority: EP
Inventors: Chi Liu; Jan Ondrejcak; Miroslav Mandrik; Rastislav Andrejco
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2021-08-12
Filing date: 2022-07-14
Publication date: 2023-02-15
Also published as: CN216114216U

Abstract

This application provides an improved cooker hood and an air duct holder thereof. An embodiment of this application relates to an air duct holder of a cooker hood. A wall body of the air duct holder is provided with several through holes (3); and the air duct holder includes a sound absorption material adapted to wrap an outer side of the wall body of the air duct holder to shield the through holes (3). By adopting the technical solution of this application, the noise can be reduced.

Description

TECHNICAL FIELD

This application relates to the field of cooker hoods, and in particular, to an air duct holder of a cooker hood.

BACKGROUND

In Asian region, fume generated during cooking is particularly high in grease due to the conventional cooking habit of stir-frying. Therefore, the cooker hood used for discharging the fume generated during cooking has become an indispensable household appliance in the daily life of home. An air duct holder used for being connected to an exhaust pipe is generally disposed in the existing cooker hood, as shown in FIG. 1 to FIG. 3. As shown in FIG. 2 and FIG. 3, the existing air duct holder has a very simple structure, and is easy to generate heavy noise when the cooker hood works.
Unless there is sufficient evidence, the prior art described herein does not mean that it is recognized that the prior art is well known to those 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 an air duct holder thereof for at least one of the above technical problems.
An embodiment of this application relates to an air duct holder of a cooker hood, a wall body of the air duct holder is provided with several through holes; and the air duct holder includes a sound absorption material adapted to wrap an outer side of the wall body of the air duct holder to shield the through holes. By adopting the technical solution of this application, the noise can be reduced.
In a possible design, the sound absorption material is annular as a whole. In this way, the noise reduction effect can be improved.
In a possible design, the air duct holder includes a housing part; an accommodating space is formed at an interval between the housing part and the wall body of the air duct holder; and the sound absorption material is filled into the accommodating space.
In a possible design, the housing part is detachably fixed to the air duct holder. In this way, the sound absorption material is easy to be replaced.
In a possible design, the wall body of the air duct holder is in a screen pipe shape as a whole. In this way, the noise reduction effect can be improved.
In a possible design, one end of the wall body of the air duct holder is an air inlet, and another end is an air outlet; the air inlet is square, and the air outlet is circular; the wall body of the air duct holder includes an exhaust channel connected between the air inlet and the air outlet; and the exhaust channel is disposed obliquely.
In a possible design, the air duct holder further includes a humidity detection device, configured to perform a reminder operation when detecting that a humidity of the sound absorption material exceeds a preset threshold. In this way, a user can be intelligently reminded to replace the sound absorption material in time, to ensure the noise reduction effect.
Another embodiment of this application relates to a cooker hood, including the air duct holder according to any one of the above descriptions.
In a possible design, the cooker hood includes a casing and a fan disposed in the casing, where the air duct holder is disposed on a top wall of the casing and is for receiving an airflow discharged from the fan.
The content of the technical solutions above of this application are not used for describing all possible implementations of this application. Throughout the application, guidance is provided in multiple places by enumerating examples, and these examples may be used in various feasible combinations.

BRIEF DESCRIPTION OF THE DRAWINGS

The following accompanying drawings are only intended to give schematic illustrations and explanations of this application, but are not intended to limit the scope of this application.

FIG. 1 is a schematic structural diagram of the existing cooker hood;
FIG. 2 is a partially enlarged view of position A in FIG. 1;
FIG. 3 is a schematic structural diagram of an air duct holder in FIG. 1;
FIG. 4 is a schematic structural diagram of an embodiment of an air duct holder of a cooker hood according to this application;
FIG. 5 is another schematic structural diagram of an embodiment of an air duct holder of a cooker hood according to this application; and
FIG. 6 is a cross-sectional view taken along A-A in FIG. 5.

Reference Numerals:

1-air inlet, 2-air outlet, 3-through hole, 4-housing part, and 5-accommodating space.

DETAILED DESCRIPTION

To make the objectives, solutions, and advantageous effects of this application clearer, this application is further described below with reference to the accompanying drawings and exemplary embodiments.

Embodiment 1

In an embodiment of an air duct holder of a cooker hood provided by this application, as shown in FIG. 4 to FIG. 6, a wall body of the air duct holder is provided with a plurality of through holes 3. The through holes 3 are evenly distributed on the wall body of the air duct holder. The through holes 3 are all circular holes, and diameters of the through holes 3 are all less than or equal to 5 mm. The wall body of the air duct holder is in a screen pipe shape as a whole. That is, a shape of the wall body of the air duct holder is similar to a screen pipe. One end of the wall body in the screen pipe shape is an air inlet 1, and another end is an air outlet 2, as shown in FIG. 4 to FIG. 6. The air inlet 1 is square, and the air outlet 2 is circular. The wall body in the screen pipe shape includes an exhaust channel connected between the air inlet 1 and the air outlet 2, and the exhaust channel is disposed obliquely. Because "the exhaust channel is disposed obliquely", an airflow is smoother when flowing from the air inlet 1 to the air outlet 2.
The embodiment of the air duct holder includes a housing part 4 and a sound absorption material. An accommodating space 5 is formed at an interval between the housing part 4 and the wall body of the air duct holder, as shown in FIG. 6. The sound absorption material is filled into the accommodating space 5. Specifically, the accommodating space 5 is full of the sound absorption material, and a shape and a size of the sound absorption material are adapted to those of the irregular accommodating space 5. It should be noted herein that, the existing sound absorption element generally adopts a regular structure, for example, a cylindrical structure or a cuboid structure. The solution of the sound absorption material with an irregular structure provided by this application is a breakthrough to the existing structure.
The sound absorption material is adapted to wrap an outer side of the wall body of the air duct holder to shield the through holes 3. The sound absorption material squeezes and abuts against the wall body of the air duct holder. In such a configuration, the sound absorption material is cleverly matched with the through holes 3, thereby reducing the noise.
The sound absorption material is sound absorption cotton provided with a hydrophobic coating. The sound absorption material is annular as a whole. All the through holes 3 are shielded by the sound absorption material.
The above is only one embodiment of this application, and other embodiments may be obtained by adding, deleting, modifying, or replacing some technical features. For example, alternatively, the housing part is detachably fixed to the air duct holder. Specifically, the housing part includes two parts: a first housing part and a second housing part. The first housing part and the second housing part are fixed together by fastening. When the first housing part and the second housing part are fixed together, the wall body of the air duct holder is disposed between the first housing part and the second housing part, so that the housing part is easy to be fixed to the air duct holder. When the first housing part and the second housing part are separated, the housing part is easy to be detached from the air duct holder. Herein, the "fastening" should be understood in a broad sense, that is, it should be understood as: based on this specification, the related art, and common knowledge, any solution that those of ordinary skill in the art can obviously think of can be applied to this application to achieve connection and fixation through elastic deformation and/or shape adaptation, and release the connection and fixation without structural damage.
In another example, alternatively, the air duct holder further includes a humidity detection device, configured to detect a humidity of the sound absorption material and perform a reminder operation when detecting that the humidity of the sound absorption material exceeds a preset threshold. Specifically, when water and grease adhered to the sound absorption material reach a certain degree, the sound absorption and noise reduction effect of the sound absorption material is affected. In this case, the humidity detection device performs the reminder operation, and a user can replace the sound absorption material in time after receiving a reminder. As for a specific manner of "performing the reminder operation", reminder information may be displayed by a display, or may be played by a voice device, or may be sent to a smartphone of the user via a wireless network.
In another example, alternatively, the diameters of the through holes are all less than or equal to 2.5 mm.

Embodiment 2

This application further provides an embodiment of a cooker hood, including an exhaust pipe, a casing, and a fan and an air duct holder that are disposed in the casing. As shown in FIG. 4 to FIG. 6, a wall body of the air duct holder is provided with a plurality of through holes 3. The through holes 3 are evenly distributed on the wall body of the air duct holder. The through holes 3 are all circular holes. The wall body of the air duct holder is in a screen pipe shape as a whole.
One end of the wall body in the screen pipe shape is an air inlet 1, and another end is an air outlet 2, as shown in FIG. 4 to FIG. 6. The air inlet 1 is square, and the air outlet 2 is circular. The wall body in the screen pipe shape includes an exhaust channel connected between the air inlet 1 and the air outlet 2, and the exhaust channel is disposed obliquely. Because "the exhaust channel is disposed obliquely", an airflow is smoother when flowing from the air inlet 1 to the air outlet 2.
The embodiment of the air duct holder includes a housing part 4 and a sound absorption material. An accommodating space 5 is formed at an interval between the housing part 4 and the wall body of the air duct holder, as shown in FIG. 6. The sound absorption material is filled into the accommodating space 5. Specifically, the accommodating space 5 is full of the sound absorption material, and a shape and a size of the sound absorption material are adapted to those of the irregular accommodating space 5. It should be noted herein that, the existing sound absorption element generally adopts a regular structure, for example, a cylindrical structure or a cuboid structure. The solution of the sound absorption material with an irregular structure provided by this application is a breakthrough to the existing structure. The sound absorption material is adapted to wrap an outer side of the wall body of the air duct holder to shield the through holes 3. The sound absorption material squeezes and abuts against the wall body of the air duct holder. In such a configuration, the sound absorption material is cleverly matched with the through holes 3, thereby reducing the noise. The sound absorption material is sound absorption cotton provided with a hydrophobic coating. The sound absorption material is annular as a whole. All the through holes 3 are shielded by the sound absorption material.
The air duct holder is disposed on a top wall of the casing, the air inlet 1 of the air duct holder is connected to a discharge port of the fan, and the air duct holder receives an airflow discharged from the fan. One end of the exhaust pipe is connected to the air outlet 2 of the air duct holder, another end of the exhaust pipe is connected to a public flue. When the fan runs, a negative pressure is generated, to form an airflow, and the airflow flows through the fan, the air duct holder, and the exhaust pipe in sequence, and is then discharged into the public flue.
The components of different embodiments may be combined with each other in any feasible manner, to achieve the objective of this application.
It should be additionally noted that this application should not be understood as being only limited to the implementations described above, but should be understood as covering all possible implementation situations determined by the claims of this application in conjunction with the disclosure of the specification. Therefore, any simple change, equivalent variation, and modification made to the above embodiments according to the technical essence of this application without departing from the content of this application shall fall within the protection scope of this application.

Claims

An air duct holder of a cooker hood, characterized in that,
a wall body of the air duct holder is provided with several through holes (3); and

the air duct holder comprises a sound absorption material adapted to wrap an outer side of the wall body of the air duct holder to shield the through holes (3).
The air duct holder according to claim 1, characterized in that,
the sound absorption material is annular as a whole.
The air duct holder according to claim 1, characterized by comprising:
a housing part (4), wherein

an accommodating space (5) is formed at an interval between the housing part (4) and the wall body of the air duct holder; and

the sound absorption material is filled into the accommodating space (5).
The air duct holder according to claim 3, characterized in that,
the housing part (4) is detachably fixed to the air duct holder.
The air duct holder according to claim 1, characterized in that,
the wall body of the air duct holder is in a screen pipe shape as a whole.
The air duct holder according to claim 5, characterized in that,
one end of the wall body of the air duct holder is an air inlet (1), and another end is an air outlet (2);

the air inlet (1) is square, and the air outlet (2) is circular;

the wall body of the air duct holder comprises an exhaust channel connected between the air inlet (1) and the air outlet (2); and

the exhaust channel is disposed obliquely.
The air duct holder according to claim 1, characterized by further comprising:
a humidity detection device, configured to perform a reminder operation when detecting that a humidity of the sound absorption material exceeds a preset threshold.
A cooker hood, characterized by comprising:
the air duct holder according to any one of claims 1 to 7.
The cooker hood according to claim 8, characterized by comprising:
a casing and a fan disposed in the casing, wherein

the air duct holder is disposed on a top wall of the casing and is for receiving an airflow discharged from the fan.