Silent panel and range hood

Abstract

The utility model relates to the technical field of range hoods, and provides a mute panel and a range hood. The mute panel comprises a panel body and an oil separation layer. Grids are arranged on the surface of the panel body, sound absorption units are arranged in the grids, and each sound absorption unit comprises a sound absorption cavity and a sound absorption hole which are communicated with each other. The oil isolation layer covers the grid, and a buffer space is formed between the oil isolation layer and the grid and communicated with the sound absorption cavity through the sound absorption holes. According to the mute panel provided by the embodiment of the utility model, the grid is arranged on the surface of the panel body, so that the buffer space is formed between the oil separation layer and the grid. When the oil separation layer is impacted by sound waves, the oil separation layer can deform through the buffer space, and therefore the overall rigidity of the oil separation layer is reduced. Therefore, sound can more easily penetrate through the oil isolation layer, enter the sound absorption cavity from the sound absorption holes and resonate with the sound absorption cavity, so that the sound is absorbed by the sound absorption unit.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a mute panel and a range hood. Background Art

[0002] Range hoods generate noise when in use, and the main source of noise in range hoods is the vibration of the volute. Therefore, a silent panel needs to be installed near the volute to absorb and reduce noise at the source of the noise. In order to prevent oil smoke from entering the silent panel, causing oil and dirt to accumulate in the silent panel and affecting the sound absorption effect of the silent panel, an oil barrier layer is provided on the silent panel in the related technology. However, the oil barrier layer is connected to the silent panel, which will affect the sound absorption effect of the silent panel. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a silent panel, which can separate oil and absorb noise more easily.

[0004] The utility model also provides a range hood.

[0005] The utility model provides a silent panel, comprising:

[0006] A panel body, wherein a grid is provided on the surface of the panel body, a sound absorbing unit is provided in the grid, and the sound absorbing unit comprises a sound absorbing cavity and sound absorbing holes which are interconnected;

[0007] An oil-isolating layer is covered on the grid, a buffer space is formed between the oil-isolating layer and the grid, and the buffer space is connected to the sound-absorbing cavity through the sound-absorbing hole.

[0008] According to the silent panel proposed in the embodiment of the utility model, a grid is arranged on the surface of the panel body, so that a buffer space is formed between the oil-isolating layer and the grid. When the oil-isolating layer is impacted by sound waves, the oil-isolating layer can be deformed through the buffer space, thereby reducing the overall stiffness of the oil-isolating layer. In this way, it is easier for sound to pass through the oil-isolating layer, enter the sound-absorbing cavity from the sound-absorbing hole, resonate with the sound-absorbing cavity, and thus the sound is absorbed by the sound-absorbing unit.

[0009] According to an embodiment of the present utility model, the panel body further includes an airflow guide portion, and the airflow guide portion is arranged along the circumference of the panel body.

[0010] According to one embodiment of the utility model, the panel body has a first side and a second side opposite to each other, the grid is arranged on the first side, the airflow guide portion is a guide slope, and the guide slope gradually moves away from the center of the panel body from the first side toward the second side.

[0011] According to an embodiment of the utility model, a connecting rib is provided between the inner wall of the guide slope and the adjacent side wall of the sound absorbing cavity.

[0012] According to an embodiment of the present invention, there are multiple grids, and the sound absorbing unit is disposed in each grid.

[0013] According to an embodiment of the present invention, a plurality of the sound absorbing units are arranged in an array on the surface of the panel body, and / or the number of the sound absorbing holes of the sound absorbing units in at least part of the grids are different.

[0014] According to an embodiment of the present invention, the cross-sections of all the sound absorbing cavities are rectangular, and / or the volumes of all the sound absorbing cavities are equal.

[0015] According to one embodiment of the utility model, the oil-isolating layer is a sound-absorbing cotton layer.

[0016] and / or,

[0017] The density of the sound-absorbing cotton layer is less than 10 kg / m3.

[0018] The utility model also provides a range hood, comprising:

[0019] case;

[0020] A volute, the volute being arranged inside the housing;

[0021] The above-mentioned silent panel is arranged on the shell.

[0022] According to an embodiment of the utility model, there are a plurality of the silent panels, and the plurality of the silent panels are arranged around the volute.

[0023] The range hood proposed in the utility model includes the above-mentioned silent panel and thus also has the beneficial effects of the above-mentioned silent panel, which will not be described in detail here.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of the first side direction of the mute panel provided by the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the second side direction of the mute panel provided by the utility model;

[0028] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0029] Figure 4 yes Figure 3 A local enlarged view of point A;

[0030] Figure 5 This is another structural schematic diagram of the second side direction of the mute panel provided by the utility model;

[0031] Figure 6 yes Figure 5 A partial enlarged view of point B;

[0032] Figure 7 The utility model provides a schematic diagram of the structure of a range hood, in which a part of the housing is hidden.

[0033] Reference numerals:

[0034] 10. Range hood;

[0035] 100. Silent panel;

[0036] 110, panel body; 111, grid; 112, sound absorbing unit; 1121, sound absorbing hole; 1122, sound absorbing cavity; 113, air flow guide; 114, connecting rib;

[0037] 120. Grease barrier;

[0038] 130. Buffer space;

[0039] 200, housing;

[0040] 300. Snail shell. DETAILED DESCRIPTION

[0041] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0042] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] Range hoods generate noise when in use, and the main source of noise in range hoods is the vibration of the volute. Therefore, a silent panel needs to be installed near the volute to absorb and reduce noise at the source of the noise. In order to prevent oil smoke from entering the silent panel, causing oil and dirt to accumulate in the silent panel and affecting the sound absorption effect of the silent panel, an oil barrier layer is provided on the silent panel in the related technology. However, the oil barrier layer is connected to the silent panel, which will affect the sound absorption effect of the silent panel.

[0047] like Figure 1 , Figure 3 and Figure 4 As shown, the utility model proposes a silent panel 100, including a panel body 110 and an oil-proof layer 120. A grid 111 is provided on the surface of the panel body 110, and a sound-absorbing unit 112 is provided in the grid 111. The sound-absorbing unit 112 includes a sound-absorbing cavity 1122 and a sound-absorbing hole 1121 that are interconnected. The oil-proof layer 120 covers the grid 111, and a buffer space 130 is formed between the oil-proof layer 120 and the grid 111. The buffer space 130 is connected to the sound-absorbing cavity 1122 through the sound-absorbing hole 1121. In this way, a buffer space 130 is formed between the oil-proof layer 120 and the grid 111, which can prevent the oil-proof layer 120 from being closely attached to the panel body 110, thereby reducing the stiffness of the oil-proof layer 120. It should be noted that stiffness is the ability of an object to resist deformation, which is related to factors such as the shape and material of the object. In the present invention, a grid 111 is designed on the surface of the panel body 110, and a buffer space 130 is formed between the oil-isolating layer 120 and the grid 111. In this way, when the oil-isolating layer 120 is impacted by sound waves, the oil-isolating layer 120 can be deformed through the buffer space 130, thereby reducing the overall rigidity of the oil-isolating layer 120. In this way, it is easier for sound to pass through the oil-isolating layer 120, enter the sound-absorbing cavity 1122 from the sound-absorbing holes 1121, and resonate with the sound-absorbing cavity 1122, so that the sound is absorbed by the sound-absorbing unit 112.

[0048] According to the silent panel 100 proposed in the embodiment of the utility model, a grid 111 is provided on the surface of the panel body 110, so that a buffer space 130 is formed between the oil-isolating layer 120 and the grid 111. When the oil-isolating layer 120 is impacted by sound waves, the oil-isolating layer 120 can be deformed through the buffer space 130, thereby reducing the overall rigidity of the oil-isolating layer 120. In this way, it is easier for sound to pass through the oil-isolating layer 120, enter the sound-absorbing cavity 1122 from the sound-absorbing hole 1121, and resonate with the sound-absorbing cavity 1122, so that the sound is absorbed by the sound-absorbing unit 112.

[0049] like Figure 1 , Figure 3 and Figure 5As shown, in one embodiment of the utility model, the panel body 110 further includes an airflow guide portion 113, and the airflow guide portion 113 is arranged along the circumference of the panel body 110. The airflow guide portion 113 can guide the airflow near the panel body 110, prevent the airflow from directly impacting the silent panel 100, reduce the noise caused by the vortex generated by the airflow, and thus reduce the operating noise of the range hood 10. In addition, the airflow guide portion 113 can also reduce the air volume loss near the panel body 110. The suction force of the range hood 10 is made more concentrated, thereby improving the oil suction efficiency. The airflow guide portion 113 can also prevent the oil smoke from directly impacting the silent panel 100, reduce the pollution of the oil smoke to the silent panel 100, and extend the service life of the silent panel 100.

[0050] like Figure 1 and Figure 3 As shown, in one embodiment of the utility model, the panel body 110 has a first side and a second side opposite to each other, and the grid 111 is arranged on the first side. Among them, the airflow guide portion 113 can be a guide slope, and the guide slope gradually departs from the center of the panel body 110 from the first side to the second side. In this way, the guide slope can effectively guide the airflow from the first side to the second side, prevent the airflow from directly impacting the silent panel 100, thereby reducing the generation of noise. The design of the guide slope can also make the airflow more evenly distributed on the panel body 110, thereby improving the stability and service life of the device.

[0051] like Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment of the present invention, a connecting rib 114 is provided between the inner wall of the guide slope and the side wall of the adjacent sound absorbing cavity 1122. In this way, the connecting rib 114 can enhance the connection strength between the guide slope and the side wall of the sound absorbing cavity 1122, making the structure of the entire panel body 110 more stable and improving the durability of the device.

[0052] like Figure 1 As shown, in one embodiment of the present invention, there are multiple grids 111, and each grid 111 is provided with a sound absorbing unit 112. In some embodiments of the present invention, each grid 111 may correspond to one sound absorbing unit 112. The sound-absorbing panel 100 can effectively absorb and reduce noise, thereby improving the sound-absorbing effect of the range hood 10. Of course, the arrangement of the sound-absorbing unit 112 is not limited thereto. In some other embodiments of the present invention, each grid 111 has multiple sound absorbing units 112.

[0053] like Figure 2As shown, in one embodiment of the utility model, a plurality of sound absorbing units 112 are arranged in an array on the surface of the panel body 110. It should be noted that, in this way, the sound absorbing units 112 arranged in an array can cover a wider frequency range, and the absorption of sound waves is enhanced through the interaction of different sound absorbing units 112. This layout is conducive to improving the absorption efficiency of the overall structure for noise of various frequencies, especially when dealing with broadband noise. In addition, the array-arranged sound absorbing units 112 help avoid dead corners for sound absorption and ensure that sound waves can be fully absorbed. This can more effectively reduce noise and improve the consistency of acoustic performance.

[0054] By adjusting the distribution, size and spacing of the sound absorbing units 112 on the panel body 110, an optimized design can be performed for a specific noise spectrum and intensity.

[0055] In addition, in some embodiments of the present invention, Figure 1 and Figure 2 As shown, the number of the sound absorbing holes 1121 of the sound absorbing unit 112 in at least part of the grid 111 is different. Since the number of the sound absorbing holes 1121 is related to the sound frequency that the sound absorbing unit 112 can absorb, by making the number of the sound absorbing holes 1121 of the sound absorbing unit 112 different, the sound absorbing unit 112 can absorb wider frequency noise, thereby improving the sound absorption effect of the silent panel 100.

[0056] In some embodiments of the present invention, a plurality of sound absorbing holes 1121 are arranged in an array on the surface of the panel body 110, so that the design of the silent panel 100 can be more flexible and can be optimized according to specific application environments and space requirements. For example, the layout and density of the sound absorbing holes can be adjusted according to the size and shape of the range hood 10 to achieve the best noise control effect.

[0057] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the cross-sections of all the sound absorbing cavities 1122 are rectangular, and the volumes of all the sound absorbing cavities 1122 are equal. Of course, the arrangement of the sound absorbing cavities 1122 of the silent panel 100 is not limited thereto. In other embodiments, the cross-sections of the multiple sound absorbing cavities 1122 are rectangular, and the volumes of at least two sound absorbing cavities 1122 are unequal.

[0058] Among them, the sound absorption cavity 1122 with a rectangular cross section can more effectively absorb noise of a specific frequency, especially has a better absorption effect on low-frequency noise. At the same time, by adjusting the volume of the sound absorption cavity 1122, the sound absorption performance of the silent panel 100 can be further optimized, and accurate control of noise of different frequencies can be achieved. By setting sound absorption cavities 1122 of different volumes, a customized design can be performed according to specific noise control requirements. For example, for a range hood 10 that generates noise of multiple frequencies, the effective absorption of noise of various frequencies can be achieved by adjusting the size of the volume of the sound absorption cavity 1122. In addition, the sound absorption cavity 1122 with a rectangular cross section can better adapt to the internal space of equipment such as the range hood 10, making the design of the silent panel 100 more compact and efficient. At the same time, by adjusting the volume of the sound absorption cavity 1122, space utilization can be further optimized and the sound absorption effect can be improved.

[0059] like Figure 1 As shown, in order to make the silent panel 100 fit the housing 200 of the range hood 10 as a whole, in one embodiment of the utility model, the silent panel 100 is in a rectangular shape. In this embodiment, when the silent panel 100 is produced, the aperture of the sound absorbing hole 1121 and the area of ​​each sound absorbing cavity 1122 are first determined to ensure that the area of ​​each sound absorbing cavity 1122 and the diameter of the sound absorbing hole 1121 are consistent. Then, by adjusting the number and height of the sound absorbing holes 1121 on each sound absorbing cavity 1122, the sound absorption coefficient can be precisely controlled. This design method not only achieves effective absorption of low-frequency broadband noise, but also ensures the rectangular shape of the silent panel 100, making it easier to design and install the structure.

[0060] like Figure 3 As shown, in some embodiments of the present invention, the oil-isolating layer 120 is a sound-absorbing cotton layer, which has good sound-absorbing properties and can effectively absorb and reduce noise, thereby improving the quiet effect of the range hood 10. In addition, the sound-absorbing cotton layer also has a good oil-isolating effect, thereby preventing oil smoke from directly impacting the quiet panel 100, reducing the pollution of the oil smoke to the quiet panel 100, and extending the service life of the quiet panel 100. After being used for a period of time, the sound-absorbing cotton layer can be easily cleaned or replaced to keep the equipment clean and running efficiently.

[0061] In some embodiments of the present invention, Figure 3As shown, the density of the sound-absorbing cotton layer is less than 10 kg / m3. Since the sound insulation follows the principle of mass law, that is, the greater the unit surface density of the sound insulation material, the greater the sound insulation, and the surface density is proportional to the sound insulation. Materials with too high density will reflect more sound, thereby reducing their sound insulation effect. Therefore, the density of the sound-absorbing cotton layer is less than 10 kg / m3, which can reduce the reflection of sound and improve the sound absorption effect while ensuring good sound insulation effect. At the same time, such a design is also conducive to reducing the weight of the equipment and improving the stability and service life of the equipment.

[0062] like Figure 7 As shown, the utility model also proposes a range hood 10, comprising a housing 200, a volute 300 and the above-mentioned mute panel 100, wherein the mute panel 100 is arranged on the housing 200 to absorb the noise generated when the range hood 10 is working. In this way, it can not only reduce the interference of noise on the living environment and improve the living comfort, but also help protect the hearing health of users. In addition, in commercial environments, such as restaurants, the range hood 10 using the mute panel 100 can provide a quieter and more comfortable dining environment and improve customer satisfaction.

[0063] The range hood 10 proposed in the present invention includes the above-mentioned silent panel 100 and thus also has the beneficial effects of the above-mentioned silent panel 100 , which will not be described in detail herein.

[0064] like Figure 7 As shown, in some embodiments of the present invention, there are multiple silent panels 100, and the multiple silent panels 100 are arranged around the volute 300. When there are two silent panels 100, the two silent panels 100 can be relatively arranged around the volute 300, so as to absorb the noise generated by the vibration of the volute 300 and the housing 200. When there are more than two silent panels 100, multiple silent panels 100 can be arranged around the volute 300, so as to improve the sound absorption effect.

[0065] The range hood 10 proposed in the present invention includes the above-mentioned silent panel 100 and thus also has the beneficial effects of the above-mentioned silent panel 100, which will not be described in detail here.

[0066] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A silent panel, characterized in that: include: A panel body, wherein a grid is provided on the surface of the panel body, a sound absorbing unit is provided in the grid, and the sound absorbing unit comprises a sound absorbing cavity and sound absorbing holes which are interconnected; An oil-isolating layer is covered on the grid, a buffer space is formed between the oil-isolating layer and the grid, and the buffer space is connected to the sound-absorbing cavity through the sound-absorbing hole.

2. The soundproof panel according to claim 1, characterized in that: The panel body further includes an airflow guiding portion, and the airflow guiding portion is arranged along the circumference of the panel body.

3. The soundproof panel according to claim 2, characterized in that: The panel body has a first side and a second side opposite to each other, the grid is arranged on the first side, the airflow guide portion is a guide slope, and the guide slope gradually departs from the center of the panel body from the first side toward the second side.

4. The silent panel according to claim 3, characterized in that: Connecting ribs are provided between the inner wall of the guide slope and the adjacent side wall of the sound absorbing cavity.

5. The soundproof panel according to claim 1, characterized in that: There are multiple grids, and each grid is provided with the sound absorbing unit.

6. The soundproof panel according to claim 5, characterized in that: A plurality of the sound absorbing units are arranged in an array on the surface of the panel body, and / or the number of the sound absorbing holes of the sound absorbing units in at least part of the grids is different.

7. The soundproof panel according to claim 5, characterized in that: The cross sections of all the sound absorbing cavities are rectangular, and / or the volumes of all the sound absorbing cavities are equal.

8. The soundproof panel according to any one of claims 1 to 7, characterized in that: The oil-isolating layer is a sound-absorbing cotton layer. and / or, The density of the oil-isolating layer is less than 10 kg / m3.

9. A range hood, characterized in that: include: case; A volute, the volute being arranged inside the housing; The silent panel according to any one of claims 1 to 8, wherein the silent panel is arranged on the shell.

10. The range hood according to claim 9, characterized in that: A plurality of the silent panels are arranged around the volute.

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