Oil mesh component and range hood

Abstract

The present invention provides an oil screen assembly and a range hood. The oil screen assembly includes an oil screen main body, and the oil screen main body includes a plurality of oil screen bottom plates and a plurality of oil screen side plates. Among them, the plurality of oil screen bottom plates are sequentially connected to form a hollow frame structure; each oil screen bottom plate is connected to one oil screen side plate, and the side parts of the oil screen side plates are sequentially connected and the tops are connected together to form a cavity structure with an open bottom; wherein, the oil screen main body is integrally formed by deep drawing of a plate member, a part of the oil screen side plates are provided with smoke inlet holes, and another part of the oil screen side plates are stretched inward to form grooves, and the grooves are used to counteract the slip plastic deformation formed during the deep drawing process. By providing smoke inlet holes on a part of the oil screen side plates and grooves on another part of the oil screen side plates that are not provided with smoke inlet holes, the oil screen assembly can counteract the slip plastic deformation formed during the deep drawing of the oil screen side plates and the oil screen bottom plates by the plate member, and eliminate the stretching marks.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to an oil screen component and a range hood. Background Art

[0002] With the development of the economy, people have higher and higher requirements for living environment. The kitchen is polluted by oil fume all year round. Therefore, the range hood has become one of the essential appliances in every family kitchen due to its excellent oil fume removal function. The oil net is a key component of the range hood. The quality of its manufacturing process directly affects the user's sensory experience. In order to increase the diversion effect of oil fume, the deeper the oil net, the better.

[0003] The oil screen is usually formed by stretching a whole piece of sheet material, but when the stretching depth exceeds 50mm, i.e. deep drawing, slip plastic deformation usually occurs due to the unstable flow of the sheet material during the deep drawing process, resulting in wrinkle-like stretch marks on the oil screen, affecting the appearance and user experience. The existing technical solutions improve the stretch marks by changing the material of the oil screen or thickening the material, but this often increases the cost, and the stretch marks may still not be eliminated. Summary of the invention

[0004] The object of the present invention is to provide an oil net assembly, which has a smoke inlet hole set through a part of the oil net side plate and a groove set through the other part of the oil net side plate without the smoke inlet hole, so as to resist the slip plastic deformation formed by the deep drawing process of the oil net side plate and the oil net bottom plate through the plate parts and eliminate the stretching marks.

[0005] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, an oil net assembly is provided, the oil net assembly comprising an oil net body, the oil net body comprising a plurality of oil net bottom plates and a plurality of oil net side plates arranged corresponding to the plurality of oil net bottom plates. The plurality of oil net bottom plates are connected in sequence to form a hollow frame structure; each of the oil net bottom plates is connected to an oil net side plate, the sides of the oil net side plates are connected in sequence and the tops are connected together to form a cavity structure with an opening at the bottom; the oil net body is formed by deep drawing of a plate as a whole, a part of the oil net side plates is provided with a smoke inlet hole, and another part of the oil net side plates is stretched inward to form a groove, the groove is used to resist the slip plastic deformation formed during the deep drawing process.

[0007] According to an embodiment of the present invention, the height of the oil net bottom plate from the top of the cavity structure is 50 mm to 80 mm.

[0008] According to an embodiment of the present invention, the cross-section of the groove is U-shaped or V-shaped, and the depth of the groove is 3 mm to 6 mm.

[0009] According to an embodiment of the present invention, the frame structure is a rectangular frame and includes two first oil screen bottom plates arranged oppositely and two second oil screen bottom plates arranged oppositely. A first oil screen side plate is connected to each of the two first oil screen bottom plates, and a second oil screen side plate is connected to each of the two second oil screen bottom plates. The smoke inlet holes are formed in the first oil screen side plates, and the grooves are formed in the second oil screen side plates.

[0010] According to an embodiment of the present invention, the oil screen assembly further includes a noise reduction plate. The noise reduction plate is installed on the second oil screen side plate to close the groove. Noise reduction holes are formed in the noise reduction plate so that the noise reduction plate and the air in the groove form a resonance sound absorption structure.

[0011] According to an embodiment of the present invention, the thickness of the noise reduction plate is 0.8 mm, and the diameter of the noise reduction holes is 0.6 mm to 1 mm.

[0012] According to an embodiment of the present invention, the perforation rate of the noise reduction plate is 1.5% to 2%.

[0013] According to an embodiment of the present invention, a first flanging is provided at the top edge of the noise reduction plate, and the first flanging is fixed to the second oil screen side plate.

[0014] According to an embodiment of the present invention, a second flanging is provided at the bottom edge of the noise reduction plate, and the second flanging is fixed to the second oil screen bottom plate.

[0015] According to another aspect of the present invention, an oil fume extractor is provided. The oil fume extractor includes the aforementioned oil screen assembly and a smoke collecting hood. A smoke inlet is formed in the middle of the smoke collecting hood, and the oil screen bottom plate is connected to the smoke inlet.

[0016] One embodiment of the present invention has the following advantages or beneficial effects:

[0017] In the oil screen assembly of the present invention, by providing smoke inlet holes in a part of the oil screen side plates and grooves in the other part of the oil screen side plates without smoke inlet holes, it is possible to counteract the slip plastic deformation formed during the deep drawing process of the oil screen side plates and the oil screen bottom plates through the plate members, and eliminate the drawing marks. At the same time, when the groove is recessed inward, it is a Helmholtz resonance cavity, which together with the noise reduction plate with noise reduction holes forms a resonance sound absorption structure. This resonance sound absorption structure is arranged at the position closest to the fan of the range hood. By specifically setting the depth of the groove, the thickness of the noise reduction plate, the diameter of the noise reduction holes, and the perforation rate of the noise reduction plate, the resonance sound absorption structure has a better noise reduction effect on the low-frequency noise of the range hood fan. Description of the Drawings

[0018] The above and other features and advantages of the present invention will become more apparent by describing its exemplary embodiments in detail with reference to the accompanying drawings.

[0019] Figure 1 is an exploded view of an oil screen assembly shown according to an exemplary embodiment.

[0020] Figure 2 is a perspective view of an oil screen assembly shown according to an exemplary embodiment.

[0021] Figure 3 is a cross-sectional view of an oil screen assembly shown according to an exemplary embodiment.

[0022] Figure 4 is a partial schematic view of a range hood shown according to an exemplary embodiment.

[0023] Wherein, the reference numerals are explained as follows:

[0024] 1, oil screen bottom plate; 11, first oil screen bottom plate; 12, second oil screen bottom plate; 121, second hole position; 2, oil screen side plate; 21, smoke inlet hole; 22, groove; 23, first oil screen side plate; 24, second oil screen side plate; 3, noise reduction plate; 31, noise reduction hole; 32, first flanging; 33, second flanging; 331, first hole position; 4, rivet; 5, smoke collecting hood. Specific Embodiments

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures and thus their detailed description will be omitted.

[0026] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0027] The oil mesh component of the embodiment of the present invention includes an oil mesh main body, and the oil mesh main body includes a plurality of oil mesh bottom plates 1 and a plurality of oil mesh side plates 2 arranged corresponding to the plurality of oil mesh bottom plates 1. Among them, the plurality of oil mesh bottom plates 1 are connected in sequence to form a hollow frame structure; each oil mesh bottom plate 1 is connected to an oil mesh side plate 2, and the side parts of the oil mesh side plates 2 are connected in sequence and the tops are connected together to form a cavity structure with an open bottom; among them, the oil mesh side plate 2 and the oil mesh bottom plate 1 are integrally formed by deep drawing of a plate member, a part of the oil mesh side plate 2 is provided with a smoke inlet hole 21, and another part of the oil mesh side plate 2 is stretched inward to form a groove 22, and the groove is used to counteract the slip plastic deformation formed during the deep drawing process. The height of the oil mesh bottom plate 1 from the top of the cavity structure is 50 mm to 80 mm.

[0028] As Figures 1 to 3 shown, the plurality of oil mesh bottom plates 1 are arranged in a circle and connected one by one, and the end of the last oil mesh bottom plate 1 is connected to the head of the first oil mesh bottom plate 1, so as to enclose and form a frame structure. The frame structure is a hollow polygon. Each oil mesh side plate 2 corresponds to an oil mesh bottom plate 1. The bottom end of the oil mesh side plate 2 is connected to the oil mesh bottom plate 1. The oil mesh side plate 2 extends obliquely from the oil mesh bottom plate 1 towards the central axis of the frame structure. The tops of the oil mesh side plates 2 converge and combine together to form a cavity structure with an open bottom, which can be used to collect oil fume. The oil fume enters from the open bottom. When passing through the smoke inlet hole 21, part of the grease of the oil fume remains on the oil mesh side plate 2. When the height of the cavity structure is 50 mm to 80 mm, while performing forward deep drawing on the overall plate member, the oil mesh side plate 2 without the smoke inlet hole 21 is reversely drawn inward or outward away from the cavity structure to make it bulge to form a groove 22, thereby avoiding the slip plastic deformation formed during the forward deep drawing process of the oil mesh component. Preferably, the height of the cavity structure is 70 mm.

[0029] In a preferred embodiment of the present invention, the cross-section of the groove 22 is U-shaped or V-shaped, and the depth of the groove 22 is 3 mm to 6 mm.

[0030] As Figures 1 to 3 shown, the groove 22 protrudes from the second oil mesh side plate 24 into or away from the outside of the cavity structure. When the height from the second oil mesh side plate 24 to the bottom of the groove 22 is 3 mm to 6 mm, it can avoid forming an obstacle when the oil fume passes through the oil mesh component, and can also maximize the avoidance of the slip plastic deformation formed during the deep drawing process of the oil mesh component. In addition, when the noise reduction plate 3 with the noise reduction hole 31 is covered on the top of the groove 22, the groove 22 can also form a resonance sound absorption structure together with the noise reduction plate 3.

[0031] In a preferred embodiment of the present invention, the frame structure is a rectangular frame, and includes two first oil screen bottom plates 11 arranged oppositely and two second oil screen bottom plates 12 arranged oppositely. A first oil screen side plate 23 is connected to each of the two first oil screen bottom plates 11, and a second oil screen side plate 24 is connected to each of the two second oil screen bottom plates 12. A smoke inlet hole 21 is formed in the first oil screen side plate 23, and a groove 22 is formed in the second oil screen side plate 24.

[0032] As Figures 1 to 3 shown, the two first oil screen bottom plates 11 are arranged opposite to and parallel with each other, and the two second oil screen bottom plates 12 are arranged opposite to and parallel with each other. When the first oil screen bottom plate 11 and the second oil screen are integrally formed perpendicularly, the formed frame structure is rectangular. The bottom end of the first oil screen side plate 23 is integrally formed and connected to the inner side edge of the first oil screen bottom plate 11, and the bottom end of the second oil screen side plate 24 is integrally formed and connected to the inner side edge of the second oil screen bottom plate 12. The two first oil screen side plates 23 respectively extend obliquely towards the center of the frame structure, and the two second oil screen side plates 24 respectively extend obliquely towards the center of the frame structure. It can be that the two first oil screen side plates 23 and the two second oil screen side plates 24 converge at one place simultaneously, so that the cavity structure is a quadrangular pyramid structure. It can also be that the two first oil screen side plates 23 or the two second oil screen side plates 24 are combined first to form a cavity structure with a triangular cross-section, and the corresponding two second oil screen side plates 24 or two first oil screen side plates 23 join the top of the cavity structure, so that the cavity structure is a structure approximately like a quadrangular pyramid.

[0033] Preferably, the tops of the two first oil screen side plates 23 extend obliquely towards the center of the cavity structure to join, so as to form a cavity structure with front and rear openings. Each second oil screen side plate 24 is respectively joined to the first oil screen bottom plates 11 on both sides to close the front and rear openings of the cavity structure.

[0034] As Figures 1 to 3As shown in the figure, an air inlet hole 21 is formed in the first oil screen side plate 23 on the left side, and its bottom edge is connected to the inner side edge of the first oil screen bottom plate 11 on the left side. The first oil screen side plate 23 on the left side extends obliquely upward to the right. An air inlet hole 21 is formed in the first oil screen side plate 23 on the right side, and its bottom edge is connected to the inner side edge of the first oil screen bottom plate 11 on the right side. The first oil screen side plate 23 on the right side extends obliquely upward to the left. Preferably, when the inclination angles of the first oil screen side plates 23 on the left and right sides are the same, the two first oil screen side plates 23 are joined on the central axis of the cavity structure, so that the left and right sides of the cavity structure are closed and the front and back sides are open. A groove 22 is provided on the second oil screen side plate 24 on the front side, and its bottom edge is connected to the inner side edge of the second oil screen bottom plate 12 on the front side. The second oil screen side plate 24 on the front side extends obliquely backward and upward and joins when intersecting with the first oil screen side plates 23 on the left and right sides. Similarly, the second oil screen side plate 24 on the rear side also extends obliquely forward and upward from the second oil screen bottom plate 12 on the rear side, so as to close the front and back openings of the cavity structure, so that the oil fume collected in the cavity structure completely enters the smoke collecting hood 5 through the air inlet hole 21.

[0035] In a preferred embodiment of the present invention, the oil screen assembly further includes a noise reduction plate 3. The noise reduction plate 3 is installed on the second oil screen side plate 24 to close the groove 22. A noise reduction hole 31 is formed in the noise reduction plate 3, so that the noise reduction plate 3 and the air in the groove 22 form a resonance sound absorption structure.

[0036] As Figures 1 to 3 shown in the figure, the groove 22 is formed by bulging from the second oil screen side plate 24 into the cavity structure. The noise reduction plate 3 is closed at the opening of the groove 22. The noise reduction hole 31 is formed in the noise reduction plate 3, and a resonance structure with a certain natural frequency can be obtained. According to the Helmholtz resonance sound absorption principle, the cavity in the groove 22 is a Helmholtz resonance cavity. The noise reduction plate 3 has a certain thickness, so that there is a column of air with a certain mass in the noise reduction hole 31. When the gas molecules of the air column are excited by the noise sound wave of the range hood fan and vibrate, they move back and forth like a piston. Due to the action of friction and damping, part of the sound energy incident on the noise reduction hole 31 is consumed, so as to effectively achieve the sound reduction effect.

[0037] In a preferred embodiment of the present invention, the thickness of the noise reduction plate 3 is 0.8 mm, the diameter of the noise reduction hole 31 is 0.6 mm to 1 mm, and the perforation rate of the noise reduction plate 3 is 1.5% to 2%.

[0038] As Figures 1 to 3 shown in the figure, therefore, when the thickness of the noise reduction plate 3 is 0.8 mm and the diameter of the noise reduction hole 31 is 0.6 mm to 1 mm, the volume of the air column generated is 0.226 mm 3 to 0.628 mm 3, when the thickness of the noise reduction plate 3 and the aperture size of the noise reduction holes 31 are fixed, the larger the perforation rate, the larger the resonance frequency, and the sound absorption degree for low frequencies will decrease, and the resonance frequency will shift towards higher frequencies. The noise generated by the range hood fan is usually low-frequency noise. Therefore, the perforation rate of the noise reduction plate 3 is set between 1.5% and 2% to further improve the sound absorption effect for the noise generated by the range hood fan.

[0039] In a preferred embodiment of the present invention, a first flanging 32 is provided at the top edge of the noise reduction plate 3, and the first flanging 32 is fixed to the second oil screen side plate 24.

[0040] As Figures 1 to 3 shown, a first flanging 32 extends outward from the top edge of the noise reduction plate 3, and the first flanging 32 has an overlapping part with the second oil screen side plate 24. The first flanging 32 and the second oil screen side plate 24 are bonded at the corresponding positions of their overlapping parts with silicone glue.

[0041] In a preferred embodiment of the present invention, a second flanging 33 is provided at the bottom edge of the noise reduction plate 3, and the second flanging 33 is fixed to the second oil screen bottom plate 12.

[0042] As shown in Figures 1 to Figure 3 shown, the second flanging 33 extends along the extension direction of the second oil screen bottom plate 12 from the bottom edge of the noise reduction plate 3, so that the second flanging 33 has an overlapping part with the second oil screen bottom plate 12. The second flanging 33 is provided with a first hole 331 at the overlapping part of the two, and the second oil screen bottom plate 12 is provided with a second hole 121 at the overlapping part of the two. The rivet 4 passes through the first hole 331 and the second hole 121 in sequence to fix the noise reduction plate 3 and the second oil screen bottom plate 12. The rivet 4 can be one or multiple. In this application, it is preferably 3. The 3 rivets 4 are arranged at equal intervals on the second flanging 33, which can increase the connection strength of the entire oil screen assembly, thereby avoiding deformation of the oil screen assembly during transportation.

[0043] The range hood of the embodiment of the present invention includes the aforementioned oil screen assembly and the smoke collecting hood 5. An air inlet is provided in the middle of the smoke collecting hood 5, and the oil screen bottom plate 1 is connected to the air inlet.

[0044] As Figure 4 shown, the smoke collecting hood 5 is used to collect flue gas. An air inlet is provided in the middle of the smoke collecting hood 5, so that the collected flue gas all enters the range hood through the air inlet, and the oil screen bottom plate 1 is surrounded around the periphery of the air inlet, thereby fixing the oil screen assembly to the air inlet. The oil screen assembly with a relatively high height is used to guide the oil fume, so as to fully separate the grease in the oil fume. The noise reduction plate 3 is arranged on the oil screen side plate 2, and the resonance sound absorption structure can be arranged at the position closest to the range hood fan to maximize the noise reduction effect.

[0045] In the embodiments of the present invention, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0047] In the description of this specification, the description of terms such as "one embodiment", "one preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] The above are only the preferred embodiments of the embodiments of the present invention and are not used to limit the embodiments of the present invention. For those skilled in the art, various changes and modifications can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. An oil screen assembly, characterized in that, Comprising: An oil screen body, the oil screen body includes a plurality of oil screen bottom plates (1) and a plurality of oil screen side plates (2) provided corresponding to the plurality of oil screen bottom plates (1). Among them, the plurality of oil screen bottom plates (1) are sequentially connected to form a hollow frame structure, and each oil screen bottom plate (1) is connected to one oil screen side plate (2). The side portions of the oil screen side plates (2) are sequentially connected and the tops are connected together to form a cavity structure with an open bottom; Wherein, the oil screen body is integrally formed by deep drawing of a plate member. A part of the oil screen side plates (2) are provided with smoke inlet holes (21), and another part of the oil screen side plates (2) are stretched inward to form grooves (22), and the grooves (22) are used to counteract the slip plastic deformation formed during the deep drawing process; The height of the oil screen bottom plate (1) from the top of the cavity structure is 50 mm to 80 mm; The frame structure is a rectangular frame and includes two first oil screen bottom plates (11) arranged oppositely and two second oil screen bottom plates (12) arranged oppositely. One first oil screen side plate (23) is respectively connected to the two first oil screen bottom plates (11), and one second oil screen side plate (24) is respectively connected to the two second oil screen bottom plates (12). The smoke inlet hole (21) is provided on the first oil screen side plate (23), and the groove (22) is formed on the second oil screen side plate (24); It further includes a noise reduction plate (3). The noise reduction plate (3) is installed on the second oil screen side plate (24) to close the groove (22). The noise reduction plate (3) is provided with noise reduction holes (31) so that the noise reduction plate (3) and the air in the groove (22) form a resonance sound absorption structure.

2. The oil screen assembly according to claim 1, wherein, The cross section of the groove (22) is U-shaped or V-shaped, and the depth of the groove (22) is 3 mm to 6 mm.

3. The oil screen assembly according to claim 1, wherein, The thickness of the noise reduction plate (3) is 0.8 mm, and the diameter of the noise reduction holes (31) is 0.6 mm to 1 mm.

4. The oil screen assembly according to claim 1, wherein, The perforation rate of the noise reduction plate (3) is 1.5% to 2%.

5. The oil screen assembly according to claim 1, wherein, A first flanging (32) is provided at the top edge of the noise reduction plate (3), and the first flanging (32) is fixed to the second oil screen side plate (24).

6. The oil screen assembly according to claim 1, wherein A second flanging (33) is provided at the bottom edge of the noise reduction plate (3), and the second flanging (33) is fixed to the second oil screen bottom plate (12).

7. An oil fume extractor, characterized in that, Comprising: The oil screen assembly according to any one of claims 1 to 6; And A smoke collecting hood (5), an air inlet is provided in the middle of the smoke collecting hood (5), and the oil screen bottom plate (1) is connected to the air inlet.

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