Noise reduction supporting piece and range hood

Abstract

The utility model belongs to the technical field of household appliances, and discloses a noise reduction supporting piece and a range hood, and the noise reduction supporting piece comprises a supporting structure. The supporting structure is used for being installed in a smoke collecting cavity of the extractor hood, the supporting structure is provided with an installation hole, and the installation hole is configured to be opposite to a flue inlet of the extractor hood. The supporting structure is provided with a silencing cavity, and silencing holes communicating with the silencing cavity are formed in the overflowing face, used for making contact with lampblack, of the supporting structure. According to the noise reduction supporting piece provided by the embodiment, the structural strength of the smoke collecting cavity in the range hood can be improved, and the noise reduction supporting piece is also used for absorbing aerodynamic noise, so that the range hood has lower noise during operation.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a noise reduction support and a range hood. Background Technology

[0002] Range hoods are common kitchen appliances that remove and vent cooking fumes outdoors. Typically installed above the stove, they quickly draw away harmful cooking fumes and oily residue, venting them outside. They also condense and collect the oil residue, reducing pollution and purifying the air.

[0003] In existing technology, a range hood includes a range hood housing and a baffle plate connected to the housing. The housing has an air duct and a fan located within the duct. A smoke collection chamber connected to the air duct is formed between the baffle plate and the housing. When the fan operates, it generates negative pressure. Under this negative pressure, cooking fumes are drawn into the smoke collection chamber through the gap between the baffle plate and the housing. After being filtered by an oil filter in the smoke collection chamber, the fumes enter the air duct and are then discharged.

[0004] However, when cooking fumes enter the gap between the baffle plate and the fumes chamber, the flow direction changes from vertical to horizontal. This change in flow direction creates vortices, resulting in significant noise from the range hood during operation. Therefore, there is an urgent need for a range hood with noise reduction capabilities. Utility Model Content

[0005] The first objective of this invention is to provide a noise reduction support that can be used to absorb noise.

[0006] The second objective of this invention is to provide a range hood with high structural strength and low noise.

[0007] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0008] Noise reduction support components, including:

[0009] The support structure is used to install in the smoke collection chamber of the range hood. The support structure is provided with mounting holes, which are configured to be opposite to the flue inlet of the range hood. The support structure has a silencing chamber, and the flow surface of the support structure that comes into contact with the oil fumes is provided with silencing holes that communicate with the silencing chamber.

[0010] In one embodiment, the edge of the support structure includes multiple smoke inlet edges, each smoke inlet edge having a silencing cavity between it and the mounting hole, and each silencing cavity being connected to a silencing hole.

[0011] In one embodiment, the anechoic cavity is located inside the supporting structure; or...

[0012] The support structure includes a support body and a silencing part connected to the support body. The support body is used to be installed in the smoke collection chamber and has mounting holes. The silencing part has a silencing cavity and silencing holes.

[0013] In one embodiment, the length of the silencing cavity in the first direction Z ranges from 100mm to 200mm; wherein, the first direction Z is the thickness direction of the supporting structure;

[0014] And / or,

[0015] The diameter of the sound-absorbing holes ranges from 0.8mm to 1.5mm.

[0016] In one embodiment, the silencing cavity is connected to a plurality of silencing holes, which are spaced apart, and the distance between two adjacent silencing holes is 5mm-10mm.

[0017] And / or,

[0018] The silencing cavity is connected to multiple silencing holes. The sum of the orifice areas of the multiple silencing holes is the first area. The part of the flow surface used to enclose the silencing cavity is the characteristic surface. The first area accounts for 1%-5% of the area of ​​the characteristic surface.

[0019] In one embodiment, the noise reduction support also includes a purification structure for electro-adsorbing oil fume particles.

[0020] The purification structure is located on the flow surface of the support structure; and / or, the noise reduction support also includes a filter oil screen installed in the mounting hole, and the purification structure is located on the filter oil screen.

[0021] In one embodiment, the purification structure includes a first semiconductor group and a second semiconductor group, which are disposed opposite to each other in a second direction X.

[0022] The first semiconductor group is electrically connected to the positive terminal of the power supply, and the second semiconductor group is electrically connected to the negative terminal of the power supply. Both the first and second semiconductor groups are used for electro-adsorption of oil fume particles.

[0023] In one embodiment, the first semiconductor group includes a plurality of first semiconductor pillars spaced apart and connected in series along a third direction Y, and the second semiconductor includes a plurality of second semiconductor pillars spaced apart and connected in series along a third direction Y; both the first semiconductor pillars and the second semiconductor pillars are used for electro-adsorbing oil fume particles; the third direction Y is perpendicular to the second direction X;

[0024] Multiple first semiconductor pillars and multiple second semiconductor pillars are staggered in the second direction X; and / or, both the first semiconductor pillars and the second semiconductor pillars extend along the second direction X.

[0025] In one embodiment, the support structure is inclined, and the angle between the support structure and the horizontal plane is in the range of 2°-6°.

[0026] A range hood is provided, including a smoke collection chamber and the aforementioned noise reduction support, wherein the noise reduction support is installed in the smoke collection chamber.

[0027] The beneficial effects of the noise reduction support and range hood provided by this utility model are as follows:

[0028] The range hood provided in this embodiment has a support structure with a sound-absorbing cavity and sound-absorbing holes connecting the sound-absorbing cavity. When the fumes flow through the flow surface of the support structure, the sound waves are incident on the interior of the sound-absorbing holes and interact with the air molecules inside the sound-absorbing holes, resulting in reflection, scattering and absorption, which can reduce the propagation of noise. The noise that propagates through the sound-absorbing holes into the sound-absorbing cavity is more easily reflected and scattered in the sound-absorbing cavity, making it difficult for the noise inside the sound-absorbing cavity to propagate out, until it is consumed to the point of annihilation, which has a high noise reduction effect and reduces the noise when the range hood is working. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the range hood provided in Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of the first structure of the noise reduction support provided in Embodiment 1 of this utility model;

[0032] Figure 3 This is a cross-sectional view of the noise reduction support provided in Embodiment 1 of this utility model;

[0033] Figure 4 This is a schematic diagram of the second structure of the noise reduction support provided in Embodiment 1 of this utility model;

[0034] Figure 5 This is a side view of the range hood provided in Embodiment 1 of this utility model;

[0035] Figure 6 This is a utility model Figure 5 The enlarged view at point A is shown below;

[0036] Figure 7 This is a structural schematic diagram of the noise reduction support component provided in Embodiment 2 of this utility model;

[0037] Figure 8 This is a cross-sectional view of the noise reduction support provided in Embodiment 2 of this utility model.

[0038] In the picture:

[0039] 100. Noise reduction support component; 10. Support structure; 11. Mounting hole; 12. Silencing cavity; 13. Silencing hole; 14. Smoke inlet edge; 15. Support body; 16. Silencing section; 20. Oil filter screen; 30. Purification structure; 31. First semiconductor group; 311. First semiconductor column; 32. Second semiconductor group; 321. Second semiconductor column;

[0040] 200. Range hood housing; 300. Air duct; 400. Smoke collection chamber; 401. Smoke inlet channel; 402. Oil hole; 500. Oil cup; 1. Power supply. Detailed Implementation

[0041] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0045] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0046] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0047] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] This embodiment provides a range hood that operates with relatively low noise. The range hood in this embodiment can be a side-draft range hood, an ultra-thin range hood, a flush-mounted range hood, etc., and this embodiment is not limited to any particular type.

[0050] For example, such as Figure 1 and Figure 2 As shown, the range hood includes a smoke collection chamber 400 and a noise-reducing support 100 installed within the smoke collection chamber 400. The smoke collection chamber 400 is used to collect cooking fumes. The noise-reducing support 100 has a noise-absorbing effect, thereby reducing the noise of the range hood during operation and reducing noise pollution. Optionally, as... Figure 1 As shown, the range hood also includes a range hood housing 200. For example, as Figure 5As shown, the smoke collection chamber 400 has a smoke collection cavity (not shown in the figure) and a smoke inlet channel 401 communicating with the smoke collection cavity. The smoke machine housing 200 has a flue (not shown in the figure) communicating with the smoke collection cavity. A fan is installed in the flue to generate negative pressure in the flue to draw out the oil fumes in the smoke collection cavity. A noise reduction support 100 is installed in the smoke collection cavity 400 and connected to the smoke collection cavity 400. The oil fumes in the smoke collection cavity flow through the noise reduction support 100 and then enter the flue.

[0051] Next, this embodiment will provide a detailed description of the noise reduction support 100.

[0052] For example, such as Figure 2 As shown, the noise reduction support 100 includes a support structure 10. Please refer to... Figure 2 and Figure 5 The support structure 10 is used for installation within the smoke collection chamber 400. For example, the support structure 10 can be a plate with a certain thickness. The material of the support structure 10 can be metallic or non-metallic; this embodiment does not limit this. For ease of description, in this embodiment, please refer to... Figure 2 and Figure 3 The thickness direction of the support structure 10 is referred to as the first direction Z, the width direction of the support structure 10 is referred to as the second direction X, and the length direction of the support structure 10 is referred to as the third direction Y. Any two of the first direction Z, the second direction X, and the third direction Y are perpendicular to each other.

[0053] It should be noted that the length and width of the support structure 10 can be the same, that is, the support structure 10 can be square. Of course, it is understood that the length direction and the width direction of the support structure 10 can also be different. In this case, the length of the support structure 10 is greater than the width of the support structure 10. This embodiment does not limit this.

[0054] like Figure 3 As shown, the support structure 10 is provided with a mounting hole 11, which penetrates the support structure 10 along its thickness direction. The mounting hole 11 is configured to be opposite to the flue inlet of the range hood housing 200. For example, the mounting hole 11 and the flue inlet can be directly opposite each other; specifically, the line connecting the center of the mounting hole 11 and the center of the flue inlet can be perpendicular to the support structure 10.

[0055] The support structure 10 has a surface facing the range hood housing 200 and a flow surface disposed opposite to this surface, wherein the flow surface is used to contact the oil fumes, that is, the oil fumes will flow through the flow surface. The flow surface is a surface in the thickness direction of the support structure 10. Please continue to the next section. Figure 3The support structure 10 has a silencing cavity 12, and the flow surface of the support structure 10 is provided with a silencing hole 13 that communicates with the silencing cavity 12. The silencing hole 13 is used to absorb aerodynamic noise. The aerodynamic noise is transmitted to the silencing cavity 12 through the silencing hole 13 and gradually weakens in the silencing cavity 12 to achieve the effect of silencing.

[0056] The range hood provided in this embodiment has a support structure 10 with a sound-absorbing cavity 12 and a sound-absorbing hole 13 communicating with the sound-absorbing cavity 12. When the fumes flow through the flow surface of the support structure 10, the sound waves are incident on the interior of the sound-absorbing hole 13 and interact with the air molecules inside the sound-absorbing hole 13, resulting in reflection, scattering and absorption, which can reduce the propagation of noise. The noise that propagates through the sound-absorbing hole 13 into the sound-absorbing cavity 12 is more easily reflected and scattered in the sound-absorbing cavity 12, making it difficult for the noise inside the sound-absorbing cavity 12 to propagate out, until it is consumed to the point of annihilation, which has a high noise reduction effect and reduces the noise when the range hood is working.

[0057] The smoke collection chamber 400 of the range hood is located at the bottom of the cabinet, and its design makes full use of the space at the bottom of the cabinet. To embed the smoke collection chamber 400 into the cabinet, its thickness and depth need to be reduced. However, reducing the thickness and depth of the smoke collection chamber 400 would result in it not meeting strength requirements. In this embodiment, a noise-reducing support member 100 connected to the smoke collection chamber 400 strengthens its structural strength, thereby ensuring the overall structural strength of the range hood. Therefore, the noise-reducing support member 100 provided in this embodiment has both noise-reducing and strength-enhancing functions, offering a more comprehensive feature set and improving the user experience.

[0058] Optionally, the smoke collection cavity 400 has multiple smoke inlet channels 401, and correspondingly, the edge of the support structure 10 includes multiple smoke inlet edges 14. Each smoke inlet channel 401 corresponds one-to-one with a smoke inlet edge 14, allowing the fumes entering through each smoke inlet channel 401 to pass through the corresponding smoke inlet edge 14 and then through the flow surface of the support structure 10. In this embodiment, please refer to... Figure 2 and Figure 3 Each smoke inlet edge 14 has a silencing cavity 12 between it and the mounting hole 11, and each silencing cavity 12 is connected to a silencing hole 13. In this way, the noise generated by the oil fumes passing through each smoke inlet edge 14 can be incident on the silencing hole 13 and the silencing cavity 12 on one side of the smoke inlet edge 14, so that the silencing cavity 12 and the silencing hole 13 can absorb all the noise generated by the oil fumes flowing over the flow surface, ensuring that the noise in all parts of the range hood is low, and further improving the noise reduction effect of the range hood.

[0059] For example, such as Figure 2As shown, the support structure 10 has two smoke inlet edges 14, which are two edges in the width direction (i.e., the second direction X) of the support structure 10.

[0060] In this embodiment, the width direction of the support structure 10 is the same as the length direction of the smoke collection cavity 400. One side of the smoke collection cavity 400 faces the user in the width direction, and the other side usually needs to be equipped with an oil cup 500. Therefore, the two smoke inlet channels 401 of the smoke collection cavity 400 are usually set on both sides in the length direction of the smoke collection cavity 400. Thus, the oil fumes entering the smoke collection cavity 400 through the smoke inlet channels 401 can flow directly through the smoke inlet edge 14, shortening the flow path of the oil fumes in the smoke collection cavity 400, thereby ensuring the efficiency of oil fume extraction.

[0061] In some alternative embodiments, please combine Figure 2 and Figure 3 A silencing cavity 12 can be provided between each smoke inlet edge 14 and the mounting hole 11, which reduces the number of silencing cavities 12 that need to be manufactured, thereby reducing the manufacturing difficulty of the noise reduction support 100. In some other optional embodiments, multiple silencing cavities 12 can also be provided between each smoke inlet edge 14 and the mounting hole 11, but this embodiment does not limit this.

[0062] Please continue reading Figure 2 In this embodiment, the support structure 10 is a split structure. Specifically, the support structure 10 includes a support body 15 and a sound-absorbing part 16 connected to the support body 15. The support body 15 is mounted on the range hood housing 200 and has mounting holes 11. The sound-absorbing part 16 has a sound-absorbing cavity 12 and sound-absorbing holes 13. The surface of the sound-absorbing part 16 facing away from the support body 15 and the surface of the support body 15 facing away from the range hood housing 200 together form a flow surface. By setting the support structure 10 as a split structure, the manufacturing of the sound-absorbing cavity 12 and the sound-absorbing holes 13 can be facilitated, and the replacement of the sound-absorbing part 16 can also be made easier.

[0063] Because the temperature of the support structure 10 is low, when the high-temperature oil fumes flow through the flow surface of the support structure 10, the oil will condense on the flow surface. The oil will adhere to the flow surface and will also remain in the silencer hole 13, affecting the silencer effect. In order to facilitate the cleaning of the silencer hole 13, the silencer part 16 in this embodiment is detachably connected to the support body 15. When it is necessary to clean the silencer hole 13, it is only necessary to remove the silencer part 16 from the support body 15, without disassembling the entire support structure 10, which improves the convenience of cleaning the silencer hole 13.

[0064] The size of the silencing cavity 12 varies depending on the frequency band to be absorbed. Since most noise from range hoods is low-frequency, in this embodiment, the length of the silencing cavity 12 in the first direction Z (i.e., the thickness direction of the supporting structure 10) ranges from 100mm to 200mm. The size of the silencing cavity 12 in the first direction Z cannot be too large, as this would increase the thickness of the supporting structure 10. A larger thickness of the supporting structure 10 would require a larger thickness of the smoke collection cavity 400 to ensure sufficient volume, which is detrimental to the slim design of the range hood. Conversely, the size of the silencing cavity 12 in the first direction Z cannot be too small, as this would increase the manufacturing difficulty of the silencing cavity 12 and also affect its noise absorption effect. For example, the length of the silencing cavity 12 in the first direction Z can be 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, or 200mm.

[0065] The shape of the silencing hole 13 in this embodiment can be circular, polygonal, elliptical, etc., and this embodiment is not limited to this. To balance the silencing effect and ease of processing, the diameter of the silencing hole 13 in this embodiment ranges from 0.8mm to 1.5mm. When the silencing hole 13 is circular, the diameter is the diameter of the silencing hole 13; when the silencing hole 13 is of other shapes, the diameter is the equivalent diameter of the silencing hole 13. The diameter of the silencing hole 13 cannot be too large, otherwise the sound waves in the silencing cavity 12 will be transmitted again through the silencing hole 13, affecting the silencing effect; the diameter of the silencing hole 13 also cannot be too small, as this will increase the difficulty of processing. For example, the diameter of the silencing hole 13 can be 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc.

[0066] To ensure the effectiveness of the sound-absorbing holes 13 in absorbing sound waves, in this embodiment, each sound-absorbing cavity 12 is connected to multiple sound-absorbing holes 13, which are spaced apart. For example, the multiple sound-absorbing holes 13 are spaced apart in the second direction X and the third direction Y. The spacing between two adjacent sound-absorbing holes 13 ranges from 5mm to 10mm. For example, the spacing between two adjacent sound-absorbing holes 13 in the second direction X and the third direction Y is 5mm-10mm. The spacing between two adjacent sound-absorbing holes 13 cannot be too large, as this would reduce the number of sound-absorbing holes 13 connected to the sound-absorbing cavity 12, thereby reducing the sound wave propagation area. This would result in only a portion of the sound waves being able to propagate to the sound-absorbing holes 13 and the sound-absorbing cavity 12, affecting the noise reduction effect. The spacing between two adjacent sound-absorbing holes 13 also cannot be too small, as this would make the sound-absorbing holes 13 too dense, affecting the strength of the supporting structure 10. For example, the spacing between two adjacent silencing holes 13 is 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. It should be noted that the spacing between two adjacent silencing holes 13 can be understood as the minimum distance between two adjacent silencing holes 13, or as the center distance between two adjacent silencing holes 13. This embodiment does not limit this.

[0067] To balance noise absorption effectiveness with the strength of the supporting structure 10, in this embodiment, the sum of the orifice areas of the plurality of silencing holes 13 constitutes a first area, and the portion of the flow surface used to enclose the silencing cavity 12 is designated as a characteristic surface. It should be noted that the characteristic surface is the area of ​​the portion of the flow surface directly opposite the silencing cavity 12 in the first direction Z. The first area accounts for 1%-5% of the area of ​​the characteristic surface. This ensures that the sum of the orifice areas of the plurality of silencing holes 13 is not excessively large, thereby guaranteeing both the strength of the supporting structure 10 and its effective noise absorption. For example, the first area may account for 1%, 2%, 3%, 4%, or 5% of the area of ​​the characteristic surface.

[0068] Optionally, the noise reduction support in this embodiment also includes an oil filter 20, which is installed in the mounting hole 11. The oil filter 20 is used to filter the oil in the fumes, allowing the fumes from one side of the support structure 10 to be filtered before entering the flue. This allows the oil in the fumes to adhere to the oil filter 20, preventing excessive harmful substances from being mixed in with the fumes. It should be noted that by aligning the mounting hole 11 directly with the flue inlet, the oil filter 20 is also aligned with the flue inlet. This allows the fumes flowing through the oil filter 20 to directly enter the flue inlet without changing the flow direction, thus reducing noise generation and enabling the range hood to have lower noise levels.

[0069] The noise reduction support 100 provided in this embodiment not only has noise reduction, oil fume filtering, and fume collection chamber 400 strength functions, but also a purification function. For details, please refer to... Figure 2 The noise reduction support 100 also includes a purification structure 30. The purification structure 30 is disposed on the support structure 10 and is used to electro-adsorb oil fume particles, thereby reducing the amount of oil fume particles carried by the discharged oil fumes, reducing pollution, and improving the safety of the range hood. Exemplarily, the purification structure 30 is disposed on the flow surface of the support structure 10. It is understood that the purification structure 30 can also be disposed on the oil filter 20, which can also electro-adsorb oil fume particles.

[0070] In one possible implementation, such as Figure 2 As shown, the purification structure 30 includes a first semiconductor group 31 and a second semiconductor group 32. The first semiconductor group 31 is disposed on the flow surface of the support structure 10 and / or the filter oil screen 20, and the second semiconductor group 32 is disposed on the flow surface of the support structure 10 and / or the filter oil screen 20. For example, when the first semiconductor group 31 is disposed on the filter oil screen 20, the first semiconductor group 31 is disposed on the surface of the filter oil screen 20 facing the flue inlet. When the second semiconductor group 32 is disposed on the filter oil screen 20, the second semiconductor group 32 is disposed on the surface of the filter oil screen 20 facing the flue inlet. The first semiconductor group 31 and the second semiconductor group 32 are arranged opposite each other in the second direction X, allowing the fumes entering the smoke collection chamber to flow through the first semiconductor group 31 and the second semiconductor group 32. Specifically, the two inlet edges of the support structure 10 are arranged opposite each other in the second direction X, so that after flowing through the inlet edges, the flow can flow through the first semiconductor group 31 and the second semiconductor group 32, thereby making the first semiconductor group 31 and the second semiconductor group 32 have a larger contact area with the oil fume, and improving the effect of adsorbing oil fume particles.

[0071] In one embodiment, the first semiconductor group 31 is disposed on one side of the filter oil screen 20 in the second direction X, and the second semiconductor group 32 is disposed on the other side of the filter oil screen 20 in the second direction X. Both the first semiconductor group 31 and the second semiconductor group 32 are disposed on the support structure 10, so that the placement of the first semiconductor group 31 and the second semiconductor group 32 does not affect the filtration of oil fumes by the filter oil screen 20. Furthermore, in order to avoid the first semiconductor group 31 and the second semiconductor group 32 blocking the silencer holes 13, when the filter oil screen 20 has silencer cavities 12 on both sides in the second direction X, the first semiconductor group 31 is disposed between the filter oil screen 20 and one silencer cavity 12 in the second direction X, and the second semiconductor group 32 is disposed between the filter oil screen 20 and the other silencer cavity 12 in the second direction X. After the oil fumes flow through the part of the support structure 10 where the silencer cavity 12 is disposed and are absorbed by noise, they flow through the first semiconductor group 31 and the second semiconductor group 32 for purification, and then are filtered by the filter oil screen 20 before finally entering the air duct 300, achieving complementary interference of noise reduction, purification, and filtration.

[0072] In other embodiments, the first semiconductor group 31 and the second semiconductor group 32 may be disposed on the oil filter screen 20.

[0073] For example, the first semiconductor group 31 is electrically connected to the positive terminal of the power supply 1, and the second semiconductor group 32 is connected to the negative terminal of the power supply 1. A high-voltage discharge between the positive charge on the first semiconductor group 31 and the negative charge on the second semiconductor group 32 generates an electric field, charging the tiny particles in the cooking fumes. Under the influence of the electric field, the charged cooking fume particles are adsorbed onto the first semiconductor group 31 and the second semiconductor group 32; that is, both the first semiconductor group 31 and the second semiconductor group 32 are used for electro-adsorption of cooking fume particles. This achieves the purpose of purifying the air. Furthermore, in this process, the high-voltage discharge not only acts on the cooking fume particles but also affects the cations surrounding the electric field. Specifically, the electric field directly absorbs the surrounding charged cation-containing cooking fume particles, thus achieving purification.

[0074] It should be noted that in this embodiment, the first semiconductor group 31 and the second semiconductor group 32 are electrically connected to the power supply 1 via wires.

[0075] For example, such as Figure 4As shown, the first semiconductor group 31 includes a plurality of first semiconductor pillars 311 spaced apart and connected in series along the third direction Y. The second semiconductor group includes a plurality of second semiconductor pillars 321 spaced apart and connected in series along the third direction Y. Both the first semiconductor pillars 311 and the second semiconductor pillars 321 are used for electro-adsorption of oil fume particles. By providing a plurality of first semiconductor pillars 311 and a plurality of second semiconductor pillars 321, interference with the flow of oil fumes can be reduced, and the purification effect can be improved. In some optional embodiments, purification channels can be formed between two adjacent first semiconductor pillars 311 and between two adjacent second semiconductor pillars 321 in the third direction Y, through which oil fumes can flow.

[0076] Optionally, the first semiconductor pillar 311 and the second semiconductor pillar 321 can both be made of graphite, or other semiconductor materials. This embodiment does not limit this.

[0077] Please continue reading Figure 4 Multiple first semiconductor pillars 311 and multiple second semiconductor pillars 321 are staggered in the second direction X, meaning that the projections of the multiple first semiconductor pillars 311 and multiple second semiconductor pillars 321 in the second direction X do not coincide. This not only increases the residence time of oil fumes in the purification channel but also reduces flow resistance, ensuring smooth airflow of oil fumes. Furthermore, it effectively prevents oil fumes from bypassing the semiconductor pillars, resulting in relatively high purification efficiency and a relatively good purification effect.

[0078] To reduce the obstruction area of ​​the first semiconductor pillar 311 and the second semiconductor pillar 321 on the oil fumes, in this embodiment, both the first semiconductor pillar 311 and the second semiconductor pillar 321 extend along the second direction X. Thus, the end face of the semiconductor pillar in the axial direction contacts the oil fumes, rather than the circumferential side surface, resulting in a smaller contact area. This reduces the resistance to the flow of oil fumes, eliminating the need to increase the power of the fan in the flue and further reducing the noise during operation of the range hood.

[0079] like Figure 5 and Figure 6 As shown, in this embodiment, the support structure 10 is inclined, and the angle between the support structure 10 and the horizontal plane is α, where the value of α ranges from 2° to 6°. The angle between the support structure 10 and the horizontal plane cannot be too large, as this would increase the size of the support structure 10 in the first direction Z, resulting in a thicker smoke collection chamber 400 and range hood; the angle between the support structure 10 and the horizontal plane cannot be too small, as this would affect the flow of oil adhering to the support structure 10 and the oil filter screen 20. For example, the angle between the support structure 10 and the horizontal plane can be 2°, 3°, 4°, 5°, 6°, etc.

[0080] In this embodiment, as Figure 6As shown, an oil cup 500 is provided at one end of the smoke collection chamber 400 in the width direction. In this embodiment, the inclination direction of the support structure 10 is such that the end of the support structure 10 near the oil cup 500 is lower than the end away from the oil cup 500, so that the oil on the support structure 10 and the filter oil screen 20 can flow smoothly into the oil cup 500 under the action of gravity. In this embodiment, an oil hole 402 is provided at the end of the smoke collection chamber 400 connected to the oil cup 500, and the oil can drip into the oil cup 500 through the oil hole 402. When the fumes pass through the smoke inlet channel 401 of the smoke collection chamber 400, they impact the noise reduction support 100 and flow along the flow surface of the noise reduction support 100. The aerodynamic noise is absorbed by the silencer holes 13 on the flow surface. Simultaneously, the fumes condense on this flow surface, forming oil. The oil flows along the inclined support structure 10 towards the side of the smoke collection chamber 400 connected to the oil cup 500 (which can be referred to as the rear side of the smoke collection chamber 400), and finally enters the oil cup 500. At the same time, the fumes are further drawn into the filter oil screen 20 by negative pressure for further filtration.

[0081] The range hood provided in this embodiment not only increases the structural strength of the smoke collection cavity 400, thereby improving the structural strength of the range hood, but also realizes the functions of oil guiding, purification and noise reduction of the range hood, with rich functions and improved user experience.

[0082] Example 2

[0083] The difference between the range hood provided in this embodiment and the range hood in Embodiment 1 is that the support structure 10 is not a split structure, but an integral structure.

[0084] Specifically, such as Figure 7 and Figure 8 As shown, the support structure 10 has a certain thickness, the silencing cavity 12 is located inside the support structure 10, and the silencing hole 13 is located on the flow surface of the support structure 10. By setting the support structure 10 as an integral structure, the support structure 10 can have high structural strength, and the setting of the support structure 10 can further improve the structural strength of the smoke collection cavity 400.

[0085] The other structures in this embodiment are similar to the corresponding structures in Embodiment 1 and have similar beneficial effects, and will not be described in detail here.

[0086] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A noise reduction support component, characterized in that, include: A support structure (10) is installed in the smoke collection chamber (400) of the range hood. The support structure (10) is provided with a mounting hole (11), which is configured to be opposite to the flue inlet of the range hood. The support structure (10) has a silencing cavity (12), and the flow surface of the support structure (10) in contact with the oil fumes is provided with a silencing hole (13) communicating with the silencing cavity (12).

2. The noise reduction support member according to claim 1, characterized in that, The edge of the support structure (10) includes a plurality of smoke inlet edges (14), each smoke inlet edge (14) having a silencing cavity (12) between it and the mounting hole (11), and each silencing cavity (12) being connected to the silencing hole (13).

3. The noise reduction support member according to claim 1, characterized in that, The silencing cavity (12) is located inside the supporting structure (10); or, The support structure (10) includes a support body (15) and a silencing part (16) connected to the support body (15). The support body (15) is used to be installed in the smoke collection cavity (400), and the support body (15) is provided with the mounting hole (11). The silencing part (16) is provided with the silencing cavity (12) and the silencing hole (13).

4. The noise reduction support member according to claim 1, characterized in that, The length of the silencing cavity (12) in the first direction Z ranges from 100mm to 200mm; wherein, the first direction Z is the thickness direction of the supporting structure (10); And / or, The diameter of the silencing hole (13) ranges from 0.8 mm to 1.5 mm.

5. The noise reduction support member according to claim 1, characterized in that, The silencing cavity (12) is connected to a plurality of silencing holes (13), the plurality of silencing holes (13) are spaced apart, and the distance between two adjacent silencing holes (13) is 5mm-10mm. And / or, The silencing cavity (12) is connected to a plurality of silencing holes (13), the sum of the orifice areas of the plurality of silencing holes (13) is a first area, the flow surface used to enclose the portion forming the silencing cavity (12) is a characteristic surface, and the first area accounts for 1%-5% of the area of ​​the characteristic surface.

6. The noise reduction support member according to any one of claims 1-5, characterized in that, The noise reduction support also includes a purification structure (30), which is used for electro-adsorbing oil fume particles; The purification structure (30) is disposed on the flow surface of the support structure (10); and / or, the noise reduction support further includes a filter oil screen (20) installed in the mounting hole (11), and the purification structure (30) is disposed on the filter oil screen (20).

7. The noise reduction support member according to claim 6, characterized in that, The purification structure (30) includes a first semiconductor group (31) and a second semiconductor group (32), which are arranged opposite to each other in the second direction X. The first semiconductor group (31) is electrically connected to the positive terminal of the power supply (1), and the second semiconductor group (32) is electrically connected to the negative terminal of the power supply (1). Both the first semiconductor group (31) and the second semiconductor group (32) are used to electrically adsorb the oil fume particles.

8. The noise reduction support member according to claim 7, characterized in that, The first semiconductor group (31) includes a plurality of first semiconductor pillars (311) spaced apart and connected in series along the third direction Y, and the second semiconductor includes a plurality of second semiconductor pillars (321) spaced apart and connected in series along the third direction Y; both the first semiconductor pillars (311) and the second semiconductor pillars (321) are used to electrically adsorb the oil fume particles; the third direction Y is perpendicular to the second direction X; The plurality of first semiconductor pillars (311) and the plurality of second semiconductor pillars (321) are staggered in the second direction X; and / or, the first semiconductor pillars (311) and the second semiconductor pillars (321) both extend along the second direction X.

9. The noise reduction support member according to any one of claims 1-5, characterized in that, The support structure (10) is inclined, and the angle between the support structure (10) and the horizontal plane is in the range of 2°-6°.

10. A range hood, characterized in that, It includes a smoke collection chamber (400) and a noise reduction support as described in any one of claims 1-9, wherein the noise reduction support is installed inside the smoke collection chamber (400).

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