Air inlet grille and extractor hood comprising same

Abstract

The utility model provides a kind of air inlet grille and range hood comprising it, including at least two layers of air inlet plate and located between two adjacent air inlet plate sandwich layer, multiple air inlet holes that are passed through all air inlet plate are opened in air inlet grille;Sandwich layer is equipped with several compartments around air inlet hole, and the compartment between two adjacent air inlet holes blocks two air inlet holes.The air inlet grille and range hood comprising it, by multilayer grille structure, so that the sound wave generated by range hood work is reflected and scattered by each layer of grille multiple times when passing through air inlet hole, gradually weakens sound wave energy.Simultaneously by being set in sandwich layer, several compartments are set around air inlet hole, multiple cavities capable of reflecting sound wave are formed around air inlet hole, and the reflection and scattering effect of sound wave is generated from different directions by the reflection and scattering effect of sound wave from the many compartments around air inlet hole, further weakens sound wave energy, to improve the sound insulation effect, improve user experience.

Description

Technical Field

[0001] This utility model relates to the technical field of range hoods, and in particular to an air inlet grille and a range hood including the grille. Background Technology

[0002] Traditional range hood air intake grilles are primarily used to filter large particles in cooking fumes, preventing them from entering the hood. However, existing air intake grille structures are poor at sound insulation, allowing noise generated by the range hood during operation to easily spread into the kitchen environment, affecting the user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of poor sound insulation effect of the air inlet grille of the existing range hood, and to provide an air inlet grille and a range hood including the grille.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] An air intake grille is installed at the air intake of a range hood. The air intake grille includes at least two air intake plates and a sandwich layer located between two adjacent air intake plates. The air intake grille has a plurality of air intake holes that penetrate all the air intake plates. The sandwich layer has a plurality of compartments around the air intake holes. The compartments located between two adjacent air intake holes block the two air intake holes.

[0006] In this design, the air intake grille forms a multi-layer grille structure through the aforementioned multi-layer air intake plates and air intake holes penetrating all the air intake plates. Compared to the traditional single-layer air intake grille structure, this multi-layer grille structure allows the sound waves generated by the range hood to be reflected and scattered multiple times by each layer of grille when passing through the air intake holes, gradually weakening the sound wave energy. Simultaneously, by setting several compartments around the air intake holes within the sandwich layer, multiple chambers capable of reflecting sound waves are formed around the air intake holes. These numerous compartments surrounding the air intake holes can reflect and scatter sound waves from different directions, further weakening the sound wave energy, thereby improving the sound insulation effect and enhancing the user experience. Specifically, the compartments located between two adjacent air intake holes block the sound waves from propagating from one air intake hole to another, effectively blocking sound wave propagation and thus improving the sound insulation effect.

[0007] Preferably, the air inlet grille has ribs connected to several layers of air inlet plates along the air inlet direction and several partitions perpendicular to the ribs between two adjacent air inlets.

[0008] In this solution, the ribs and partitions described above form several compartments within the sandwich layer, which can reflect and scatter sound waves from different directions to reduce sound wave energy and improve sound insulation. On the other hand, the ribs and partitions enhance the overall structural strength of the air intake grille, which helps to reduce vibration and noise.

[0009] Preferably, the partitions are arranged at equal intervals.

[0010] In this scheme, through the above settings, the compartments in each sandwich layer can be of the same size and arrangement, so that the sound wave energy attenuation tends to be consistent, thereby obtaining a consistent attenuation frequency band, promoting the increase of sound energy attenuation amplitude, and also facilitating processing and manufacturing.

[0011] Preferably, the spacing between the air inlet plates of two adjacent layers is equal along the air inlet direction.

[0012] In this scheme, the height of the compartments between the grilles tends to be consistent through the above settings, which is conducive to obtaining a consistent attenuation frequency band and promoting an increase in the amplitude of sound energy attenuation.

[0013] Preferably, the plurality of air inlet plates include an outlet air inlet plate located at the end of the air inlet direction, wherein the outlet air inlet plate has a first baffle groove with a protruding surface at each air inlet hole along the contour of the air inlet hole.

[0014] In this solution, the aforementioned first baffle groove is provided on the surface of the air inlet plate at the outlet end to facilitate the collection of oil fumes attached to the air inlet plate at the outlet end, and then discharge them outside the air inlet grille.

[0015] Preferably, the plurality of air inlet plates further includes an inlet end air inlet plate located at the beginning of the air inlet direction and a plurality of intermediate air inlet plates disposed between the inlet end air inlet plate and the outlet end air inlet plate, wherein the inlet end air inlet plate and / or at least one of the intermediate air inlet plates are provided with a second baffle groove with a protruding surface at each air inlet hole along the contour of the air inlet hole.

[0016] In this solution, the aforementioned second baffle groove is provided on the surface of the inlet air intake plate and / or the intermediate air intake plate to facilitate the collection of oil fumes attached to the inlet air intake plate and the intermediate air intake plate, and then discharge them outside the air intake grille.

[0017] Preferably, one or more sandwich layers between two adjacent air inlet panels are filled with sound-absorbing material.

[0018] In this solution, sound-absorbing material is filled into the sandwich layer to further absorb sound wave energy, reduce noise propagation, and thus improve the sound insulation effect.

[0019] Preferably, the plurality of air inlets are arranged at equal intervals along the width direction of the air inlet grille, and each air inlet is arranged in the same way; and / or, all the air inlets are of equal size.

[0020] In this design, the consistent arrangement of the air inlets ensures uniform sound wave energy attenuation, resulting in a consistent attenuation frequency band and increased sound energy attenuation amplitude. The uniform size of the air inlets facilitates manufacturing and contributes to a stable sound absorption effect.

[0021] Preferably, the air intake panels on each layer are made of the same material.

[0022] In this design, each air intake panel is made of the same material, ensuring consistent strength across all panels and thus providing a stable sound absorption effect.

[0023] A range hood, the range hood including the air inlet grille as described above.

[0024] In this design, the range hood employs the aforementioned air intake grille. Through multiple layers of air intake panels and air intake holes penetrating all panels, a multi-layered grille structure is formed. This allows the sound waves generated by the range hood to be reflected and scattered multiple times by each layer of grille when passing through the air intake holes, gradually weakening the sound wave energy. Simultaneously, by setting several compartments around the air intake holes within the sandwich layer, multiple chambers capable of reflecting sound waves are formed around the air intake holes. These numerous compartments surrounding the air intake holes can reflect and scatter sound waves from different directions, further weakening the sound wave energy, thereby improving the sound insulation effect and enhancing the user experience.

[0025] The positive and progressive effects of this utility model are as follows: the air inlet grille and the range hood including it form a multi-layer grille structure through multiple air inlet plates and air inlet holes penetrating all the air inlet plates. This allows the sound waves generated by the range hood to be reflected and scattered multiple times by each layer of grille when passing through the air inlet holes, gradually weakening the sound wave energy. At the same time, by setting several compartments around the air inlet holes within the sandwich layer, multiple chambers capable of reflecting sound waves are formed around the air inlet holes. Furthermore, the numerous compartments surrounding the air inlet holes can reflect and scatter sound waves from different directions, further weakening the sound wave energy, thereby improving the sound insulation effect and enhancing the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the air intake grille according to an embodiment of the present utility model.

[0028] Figure 3 for Figure 2A sectional view along the CC direction.

[0029] Figure 4 for Figure 3 A magnified structural diagram of part B in the middle.

[0030] Figure 5 This is a schematic diagram of the internal structure of the air intake grille in an embodiment of the present utility model.

[0031] Figure 6 This is a graph showing the change in sound insulation of the air intake grille as a function of sound wave frequency in an embodiment of this utility model. The horizontal axis represents the sound wave frequency, and the vertical axis represents the sound insulation.

[0032] Explanation of reference numerals in the attached figures:

[0033] Range Hood 1

[0034] Air intake grille 2

[0035] Air intake panel 3

[0036] 31 Air inlet plate at the outlet end

[0037] Inlet air intake panel 32

[0038] First flow channel 34

[0039] Rib 4

[0040] partition 7

[0041] 8 compartments

[0042] Enclosure 5

[0043] Circular hole 51

[0044] Square hole 52

[0045] Air inlet 6

[0046] Air intake direction A Detailed Implementation

[0047] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0048] This embodiment provides an air inlet grille 2, which is installed at the oil fume inlet of the range hood 1. The oil fume gas generated by the stove enters through the air inlet grille 2 and is drawn into the range hood 1 by the fan. The sound waves generated by the operation of the range hood 1 also propagate from the inside of the range hood 1 to the kitchen through the air inlet grille 2.

[0049] The air intake grille 2 includes at least two layers of air intake plates 3 and a sandwich layer located between two adjacent layers of air intake plates 3. The air intake grille 2 has multiple air intake holes 6 that penetrate all the air intake plates 3. The sandwich layer has several compartments 8 around the air intake holes 6. The compartments 8 located between two adjacent air intake holes 6 block the two air intake holes 6.

[0050] Specifically, such as Figure 1-5 As shown, in this embodiment, the air intake grille 2 has two layers of air intake plates 3 and a surrounding plate 5 that surrounds the two layers of air intake plates 3. The space of the sandwich layer is divided into numerous small compartments 8 by ribs 4 and partitions 7. The interior cavity of each small compartment 8 is a small air domain. When sound waves propagate to each small compartment 8, they are confined to this small air domain but are reflected or scattered by the compartment 8. For example, Figure 5 As shown, the structure, arrangement direction, and number of compartments 8 in different areas of the sandwich layer vary. Taking the structure around the leftmost air inlet 6 as an example, in the area between the left straight section of the air inlet 6 and the surrounding plate 5, multiple partitions 7 are arranged horizontally and at intervals, forming multiple parallel, horizontally arranged elongated compartments 8. In the area between the right straight section of the air inlet 6 and the adjacent air inlet 6, this area is divided into numerous smaller square compartments 8 by horizontal partitions 7 and vertical ribs 4. In the area between the arc sections at both ends of the air inlet 6 and the surrounding plate 5, small compartments 8 are separated by one or more vertically arranged partitions 7. Circular holes 51 and square holes 52 are provided on the four side walls of the surrounding plate 5. These circular holes 51 and square holes 52 can serve as connection holes for installation or as outlets for discharging tar collected on the surface of the air inlet plate 3.

[0051] In this embodiment, the air intake grille 2 uses two layers of air intake panels 3, which is an easy-to-implement, simple, and low-cost multi-layer grille structure that can effectively meet the need for improved sound insulation. Of course, in other embodiments, the number of layers of air intake panels 3 can be increased to achieve better sound insulation, and it is not limited to only two layers. Furthermore, the size and distribution of the compartments 8 can be adjusted accordingly based on the specific structure of the air intake grille 2 and the desired effect.

[0052] The air intake grille 2, through the aforementioned multi-layered air intake plates 3 and air intake holes 6 penetrating all the air intake plates 3, forms a multi-layered grille structure. Compared to the traditional single-layered air intake grille 2 structure, this multi-layered grille structure allows the sound waves generated by the range hood 1 to be reflected and scattered multiple times by each layer of grille when passing through the air intake holes 6, gradually weakening the sound wave energy. Furthermore, by setting several compartments 8 around the air intake holes 6 within the sandwich layer, multiple chambers capable of reflecting sound waves are formed around the air intake holes 6. These numerous compartments 8 surrounding the air intake holes 6 can reflect and scatter sound waves from different directions, further weakening the sound wave energy, thereby improving the sound insulation effect and enhancing the user experience. Specifically, by using the compartments 8 located between two adjacent air intake holes 6 to block the sound waves from propagating from one air intake hole 6 to another, the sound wave propagation is effectively blocked, thus improving the sound insulation effect.

[0053] As described above, in this embodiment, the air inlet grille 2 is provided with ribs 4 connected to several layers of air inlet plates 3 along the air inlet direction A and several partitions 7 perpendicular to the ribs 4 between two adjacent air inlet holes 6. In other embodiments, there are various ways to form the compartments 8, and their shapes can also be adjusted as needed. In this embodiment, the ribs 4 and partitions 7 form several compartments 8 within the sandwich layer, which can reflect and scatter sound waves from different directions to reduce sound wave energy and improve sound insulation. On the other hand, the ribs 4 and partitions 7 enhance the overall structural strength of the air inlet grille 2, which helps to reduce vibration and noise.

[0054] Among them, several partitions 7 are set at equal intervals, so that the compartments 8 in each sandwich layer can be the same size and arrangement, so that the sound wave energy attenuation tends to be consistent, thereby obtaining a consistent attenuation frequency band, promoting the increase of sound energy attenuation amplitude, and also facilitating processing and manufacturing.

[0055] In other embodiments, if the number of air inlet plates 3 in the air inlet grille 2 is greater than two, the spacing between two adjacent air inlet plates 3 along the air inlet direction A can be set to be equal, so that the height of the compartments 8 between the grilles tends to be consistent, which is beneficial to obtaining a consistent attenuation frequency band and promoting an increase in the amplitude of sound energy attenuation.

[0056] like Figure 4 As shown, the air inlet plate 3 includes an outlet end air inlet plate 31 located at the end of the air inlet direction A, i.e., the upper air inlet plate. The outlet end air inlet plate 31 has a first baffle groove 34 with a protruding surface at each air inlet hole 6 along the outline of the air inlet hole 6, which facilitates the collection of oil fumes attached to the outlet end air inlet plate 31 and then discharges them outside the air inlet grille 2.

[0057] In other embodiments, a second baffle groove, with a protruding surface surrounding the outline of the air inlet hole 6, can also be provided on the inlet end air inlet plate 32 (i.e., the lower air inlet plate) located at the beginning of the air inlet direction A. When the air inlet grille 2 has multiple air inlet plates, a baffle groove with a protruding surface surrounding the outline of the air inlet hole 6 can also be provided on the middle air inlet plate to collect the oil fumes adhering to the inlet end air inlet plate 32 and the middle air inlet plate, and then discharge them outside the air inlet grille 2. Correspondingly, some discharge holes for discharging oil fumes and tar can also be provided on the surrounding plate 5.

[0058] In other embodiments, sound-absorbing material can be filled in the sandwich layer between the two air inlet panels 3, thereby further absorbing sound wave energy, reducing noise propagation, and improving sound insulation.

[0059] In different implementations, the spacing of the air inlets 6, the arrangement of each air inlet 6, and one or more parameters of the size of the air inlets 6 can be adjusted. However, compared to other embodiments, this embodiment arranges multiple air inlets 6 at equal intervals along the width direction of the air inlet grille 2, with each air inlet 6 arranged in the same way and approximately the same size. This is the preferred implementation. In this design, the consistent arrangement of the air inlets 6 makes the sound wave energy attenuation more consistent, thereby obtaining a consistent attenuation frequency band and promoting an increase in the sound energy attenuation amplitude. Figure 6 As shown, the air inlet grille 2 designed in this embodiment demonstrates a significant improvement in sound insulation in the mid-to-low frequency range (600-2250Hz), with an average sound insulation of 20dB. Compared to the traditional single-layer grille structure, the sound insulation effect is improved by approximately 10-15dB. Furthermore, the air inlet holes 6 are designed with equal sizes, facilitating manufacturing and contributing to a stable sound absorption effect.

[0060] In this embodiment, each layer of air inlet plate 3, as well as the rib plate 4 and partition plate 7, is made of the same material, namely metal. The surrounding plate 5 of the air inlet grille 2 is also made of metal, maintaining the same material composition. Using the same material for the air inlet plates 3 ensures consistent strength across all layers, which is beneficial for achieving a stable sound absorption effect.

[0061] This embodiment also provides a range hood 1, which includes the air inlet grille 2 as described above. The range hood 1 uses the aforementioned air inlet grille 2, forming a multi-layer grille structure through multiple layers of air inlet plates 3 and air inlet holes 6 penetrating all the air inlet plates 3. This allows the sound waves generated by the range hood 1 during operation to be reflected and scattered multiple times by each layer of grille when passing through the air inlet holes 6, gradually weakening the sound wave energy. Simultaneously, by setting several compartments 8 around the air inlet holes 6 within the sandwich layer, multiple chambers capable of reflecting sound waves are formed around the air inlet holes 6. Furthermore, the numerous compartments 8 surrounding the air inlet holes 6 can reflect and scatter sound waves from different directions, further weakening the sound wave energy, thereby improving the sound insulation effect and enhancing the user experience.

[0062] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An air inlet grille, installed at the air inlet of a range hood, characterized in that, The air intake grille includes at least two layers of air intake plates and a sandwich layer located between two adjacent layers of air intake plates. The air intake grille has a plurality of air intake holes that penetrate all the air intake plates. The sandwich layer has several compartments around the air inlet, and the compartments between two adjacent air inlets block the two air inlets.

2. The air intake grille as described in claim 1, characterized in that, The air intake grille has ribs connected to several layers of air intake plates along the air intake direction and several partitions perpendicular to the ribs between two adjacent air intake holes.

3. The air intake grille as described in claim 2, characterized in that, Several of the aforementioned partitions are arranged at equal intervals.

4. The air intake grille as described in claim 1, characterized in that, The spacing between the air inlet plates of two adjacent layers is equal along the air inlet direction.

5. The air intake grille as described in claim 1, characterized in that, The several layers of air inlet plates include an outlet end air inlet plate located at the end of the air inlet direction, and the outlet end air inlet plate has a first baffle groove with a protruding surface at each air inlet hole along the contour of the air inlet hole.

6. The air intake grille as described in claim 5, characterized in that, The air inlet plates further include an inlet end air inlet plate located at the beginning of the air inlet direction and several intermediate air inlet plates disposed between the inlet end air inlet plate and the outlet end air inlet plate. The inlet end air inlet plate and / or at least one of the intermediate air inlet plates are provided with a second baffle groove with a protruding surface at each air inlet hole along the contour of the air inlet hole.

7. The air intake grille as described in claim 1, characterized in that, One or more sandwich layers between two adjacent air inlet panels are filled with sound-absorbing material.

8. The air intake grille as described in claim 1, characterized in that, The plurality of air inlets are equally spaced along the width direction of the air inlet grille, and each air inlet is arranged in the same way; And / or, all the air inlets are of equal size.

9. The air intake grille as described in claim 1, characterized in that, The air intake panels on each floor are made of the same material.

10. A range hood, characterized in that, The range hood includes an air inlet grille as described in any one of claims 1-9.

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