Oil fume separation net

Abstract

The utility model provides a kind of oil fume separation net, including first outer oil net, inner oil net and second outer oil net, inner oil net is arranged between first outer oil net and second outer oil net, inner oil net is equipped with the inner flow guide piece of interval arrangement, cavity is equipped with between adjacent inner flow guide piece, and cavity is separated into two independent inner layer air ducts by partition column;First outer oil net is equipped with smoke inlet, and second outer oil net is equipped with smoke outlet;Smoke inlet, inner layer air duct and smoke outlet form separation air duct, form independent inner layer air duct, avoid the collision between the oil fume of different flow direction, reduce disorder, reduce noise.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to an oil fume separation mesh. Background Technology

[0002] The oil fume separator is an important component of a range hood, which plays a role in filtering oil fumes. Currently, the internal structure of the oil fume separator can reduce the number of vortices generated by the airflow, thus affecting the oil fume separation effect.

[0003] Chinese patent application number 202220130410.8, published on May 31, 2022, discloses an oil fume separation mesh and a range hood. The oil fume separation mesh, from top to bottom, includes a first filter mesh with multiple spaced first separation bars; a second filter mesh with multiple spaced second separation bars; a third filter mesh with multiple spaced third separation bars; and a fourth filter mesh with multiple spaced fourth separation bars. The lower ends of the first and third separation bars are each provided with a dividing bar, and the upper ends of the second and fourth separation bars are each provided with a dividing bar.

[0004] The oil fume separation mesh guides the flow of air carrying oil fumes through the separator bars, so that the oil fumes come into contact with the oil fume separation mesh to achieve the effect of oil fume separation; however, after the airflow is separated by the separator bars of the second separator bar, it will converge in the middle filter, which will cause turbulence inside the oil fume separation mesh and thus increase noise. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an oil fume separation mesh that forms an independent inner air channel to avoid collisions between oil fumes flowing in different directions, reduce turbulence, and lower noise.

[0006] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0007] The present invention discloses an oil fume separation mesh, comprising a first outer oil mesh, an inner oil mesh, and a second outer oil mesh. The inner oil mesh is disposed between the first and second outer oil meshes. The inner oil mesh is provided with spaced-apart inner guide members, and a cavity is provided between adjacent inner guide members. A partition column is disposed in the cavity and divides the cavity into two independent inner air channels. The first outer oil mesh is provided with a smoke inlet, and the second outer oil mesh is provided with a smoke outlet. A separation air channel is formed between the smoke inlet, the inner air channel, and the smoke outlet.

[0008] Preferably, the inner airway includes a first guide section, a second guide section, and a third guide section distributed along the length direction; the first guide section, the second guide section, and the third guide section are arranged at relative inclinations to each other along the length direction of the inner airway.

[0009] Preferably, the second guide section is located between the first guide section and the third guide section, with the first guide section being inclined relative to the second guide section and the third guide section being inclined relative to the second guide section.

[0010] Preferably, the inner guide includes an inner guide body, a first inner guide edge, and a second inner guide edge; the first inner guide edge is disposed on the inner guide body extending towards the first outer oil mesh and inclined towards the partition column; the second inner guide edge is disposed on the inner guide body extending towards the second outer oil mesh and inclined towards the partition column; the first guide section is located between the first inner guide edge and the partition column, the second guide section is located between the inner guide body and the partition column, and the third guide section is located between the second inner guide edge and the partition column.

[0011] Preferably, a first outer air guide edge is provided on both sides of the smoke inlet, and a smoke inlet guide section is formed between the first outer air guide edge and the first inner air guide edge; the smoke inlet, the smoke inlet guide section and the first guide section are connected; the smoke inlet, the smoke inlet guide section and the first guide section are spaced apart in cross-section.

[0012] Preferably, a second outer air guide is provided on both sides of the smoke outlet, and a smoke outlet guide section is formed between the second outer air guide and the second inner air guide; the smoke outlet, the smoke outlet guide section and the third guide section are connected; the smoke outlet, the smoke outlet guide section and the third guide section are spaced apart in cross-section.

[0013] Preferably, the width between the two first outer air guide edges gradually narrows along the direction close to the inner oil mesh.

[0014] Preferably, the minimum width of the air inlet is d1, the distance between the top of the first outer air guide edge and the body of the inner air guide is d2, and the width between the first outer air guide edge and the first inner air guide edge is d3, where 1~2mm≤d3≤d2≤6~7mm≤d1.

[0015] Preferably, the included angle between the two first outer air guide edges is α, and the included angle between the two first inner air guide edges is β; 30~40°≤α=β≤70~80°.

[0016] Preferably, the height of the separator column is H, the height of the first inner air guide is h, and the distance between the first outer oil mesh and the inner air guide body is D; 5~6mm≤h<H<D≤11~12mm.

[0017] Compared to existing technologies, the beneficial effects of the oil fume separation mesh described in this utility model are mainly reflected in the following: By setting independent inner air channels within the inner guide member, the oil fumes flow independently in each inner air channel. The oil fumes in one inner air channel will not interfere with the oil fume flow in another inner air channel, thus avoiding collisions between oil fumes flowing in different directions, reducing turbulence, and lowering noise. When the oil fumes flow through the separation air channel, they come into contact with the first outer oil mesh, the inner oil mesh, and the second outer oil mesh, achieving the separation of grease and gas.

[0018] The relatively inclined guide sections within the inner air duct cause the oil fumes to change their flow direction multiple times as they pass through the first, second, and third guide sections. The grease, under inertia, is thrown towards the surfaces of the inner guide components and separators, improving the separation of grease and gas. Simultaneously, the first and third guide sections are inclined relative to the second guide section, increasing the inertia of the oil fumes as they pass through the inner air duct, further enhancing the separation of grease and gas.

[0019] The oil fumes are guided to flow in the inner air duct by the first and second inner air guide edges; the width of the input end of the first guide section is narrowed by setting the first inner air guide edge extending towards the first outer oil mesh and inclined towards the partition column; the width of the output end of the third guide section is narrowed by setting the second inner air guide edge extending towards the second outer oil mesh and inclined towards the partition column; thus, the flow velocity of the oil fumes is increased when entering and leaving the inner air duct, and the inertia of the oil fumes passing through the inner air duct is increased, thereby improving the separation degree of grease and gas; at the same time, the collision between the oil fumes and the surfaces of the inner guide components and partition columns is increased, thereby improving the separation degree of grease and gas.

[0020] By forming an inlet and outlet guide section, the distance between the inlet and the inner air duct is extended, increasing the contact area between the fumes and the first, inner, and second outer oil meshes. Simultaneously, the inlet, inlet guide section, and first guide section are spaced apart in cross-section, requiring the fumes to change direction when flowing from the inlet into the inlet guide section and vice versa. Similarly, the outlet, outlet guide section, and third guide section are spaced apart in cross-section, requiring the fumes to change direction when flowing from the third guide section into the outlet guide section and vice versa, thus improving the separation of grease and gas.

[0021] The width between the two first outer air guides gradually narrows along the direction of the smoke near the inner oil mesh. This tilting of the first outer air guides results in a larger input width at the two first outer air guides, increasing the smoke capture area and preventing oil fumes from escaping; while the smaller output width at the two first outer air guides increases the flow velocity of the oil fumes as they pass through, thus improving the separation of grease and gas.

[0022] This invention forms an independent inner air passage, which avoids collisions between oil fumes flowing in different directions, reduces turbulence, and lowers noise. Attached Figure Description

[0023] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0024] Figure 1 This is a top view of the present invention.

[0025] Figure 2 for Figure 1 Sectional view of AA.

[0026] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0027] Figure 4 This is a schematic diagram of the flow path of the oil fume in this utility model.

[0028] Figure 5 This is an exploded view of the present invention.

[0029] Figure 6 for Figure 5 A magnified view of B in the middle.

[0030] Explanation of reference numerals: 1. First outer oil mesh, 11. Smoke inlet, 11. First outer air guide edge, 111; 2. Inner oil mesh, 21. Inner air guide component, 20. Mounting platform, 211. Inner air guide component body, 212. First inner air guide edge, 213. Separator column, 22. Inner air duct, 23. First air guide section, 231. Second air guide section, 232. Third air guide section, 233; 3. Second outer oil mesh, 31. Smoke outlet, 31. Second outer air guide edge, 311; Smoke inlet air guide section, 4; Smoke outlet air guide section, 5. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limiting this utility model.

[0032] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0033] like Figure 1-6 As shown, an oil fume separation mesh includes a first outer oil mesh 1, an inner oil mesh 2, and a second outer oil mesh 3. The inner oil mesh 2 is disposed between the first outer oil mesh 1 and the second outer oil mesh 3. The inner oil mesh 2 includes a mounting platform 20, inner guide members 21, and a partition column 22. The inner guide members 21 are spaced apart on the mounting platform 20, and a cavity is provided between adjacent inner guide members 21. The partition column 22 is disposed in the cavity and divides the cavity into two independent inner air channels 23. The first outer oil mesh 1 has a smoke inlet 11, and the second outer oil mesh 3 has a smoke outlet 31. A separation air channel is formed between the smoke inlet 11, the inner air channel 23, and the smoke outlet 31. By setting independent inner air channels 23 in the inner guide members 21, the oil fumes flow independently in each inner airflow. The oil fumes in one inner air channel 23 will not interfere with the oil fume flow in another inner air channel 23, thus avoiding collisions between oil fumes flowing in different directions, reducing turbulence, and lowering noise. When the fumes flow through the separation duct, they come into contact with the first outer oil mesh 1, the inner oil mesh 2, and the second outer oil mesh 3, thus achieving the separation of grease and gas.

[0034] The inner air duct 23 includes a first guide section 231, a second guide section 232, and a third guide section 233 distributed along its length. The first guide section 231, the second guide section 232, and the third guide section 233 are arranged at relative inclinations along the length of the inner air duct 23. In this embodiment, the second guide section 232 is located between the first guide section 231 and the third guide section 233. The first guide section 231 is inclined relative to the second guide section 232, and the third guide section 233 is inclined relative to the second guide section 232. The relative inclination of the different guide sections in the inner air duct 23 causes the oil fumes to change their flow direction multiple times as they pass through the first guide section 231, the second guide section 232, and the third guide section 233. Under inertia, the grease is thrown towards the surface of the inner guide member 21 and the separator column 22, improving the separation degree of grease and gas. Meanwhile, the first guide section 231 and the third guide section 233 are inclined relative to the second guide section 232, which increases the inertia of the oil fumes passing through the inner air passage 23 and further improves the separation of oil and gas.

[0035] The inner guide 21 includes an inner guide body 211, a first inner guide edge 212, and a second inner guide edge 213. The first inner guide edge 212 is disposed on the inner guide body 211, extending towards the first outer oil mesh 1 and inclined towards the partition column 22. The second inner guide edge 213 is disposed on the inner guide body 211, extending towards the second outer oil mesh 3 and inclined towards the partition column 22. The first guide section 231 is located between the first inner guide edge 212 and the partition column 22, the second guide section 232 is located between the inner guide body 211 and the partition column 22, and the third guide section 233 is located between the second inner guide edge 213 and the partition column 22.

[0036] The oil fumes are guided to flow in the inner air duct 23 by the first inner guide edge 212 and the second inner guide edge 213; by setting the first inner guide edge 212 extending towards the first outer oil mesh 1 and inclined towards the partition column 22, the width of the input end of the first guide section 231 is narrowed; by setting the second inner guide edge 213 extending towards the second outer oil mesh 3 and inclined towards the partition column 22, the width of the output end of the third guide section 233 is narrowed; thus, when entering and leaving the inner air duct 23, the flow velocity of the oil fumes is increased, the inertia of the oil fumes passing through the inner air duct 23 is increased, thereby improving the separation degree of grease and gas; at the same time, the collision between the oil fumes and the surfaces of the inner guide component 21 and the partition column 22 is increased, thereby improving the separation degree of grease and gas.

[0037] A first outer air guide edge 111 is provided on both sides of the smoke inlet 11, and a smoke inlet guide section 4 is formed between the first outer air guide edge 111 and the first inner air guide edge 212; the smoke inlet 11, the smoke inlet guide section 4, and the first guide section 231 are connected; by forming the smoke inlet guide section 4, the distance between the smoke inlet 11 and the inner air duct 23 is extended, increasing the contact area between the oil fume and the first outer oil mesh 1 and the inner oil mesh 2. (Refer to...) Figure 3 As shown, the smoke inlet 11, the smoke guide section 4, and the first guide section 231 are spaced apart in cross-section. When the fumes flow from the smoke inlet 11 into the smoke guide section 4, the flow direction needs to be changed, and when the fumes flow from the smoke guide section 4 into the first guide section 231, the flow direction also needs to be changed.

[0038] Preferably, the width between the two first outer air guide edges 111 gradually narrows along the direction close to the inner oil mesh 2. In this way, the first outer air guide edges 111 are set at an angle, the width of the input end of the two first outer air guide edges 111 is large, increasing the smoke collection area and preventing oil fumes from escaping; the width of the output end of the two first outer air guide edges 111 is small, increasing the flow velocity of oil fumes when passing through; thus improving the separation degree of grease and gas.

[0039] A second outer air guide edge 311 is provided on both sides of the smoke outlet 31, and a smoke outlet guide section 5 is formed between the second outer air guide edge 311 and the second inner air guide edge 213; the smoke outlet 31, the smoke outlet guide section 5 and the third guide section 233 are connected; by forming the smoke inlet and outlet guide section 5, the distance between the smoke outlet 31 and the inner air duct 23 is extended, and the contact area between the oil fume and the inner oil mesh 2 and the second outer oil mesh 3 is increased; refer to Figure 3 As shown, the smoke outlet 31, the smoke guide section 5, and the third guide section 233 are spaced apart in cross-section. When the fumes flow from the third guide section 233 into the smoke guide section 5, the flow direction needs to be changed, and when the fumes flow from the smoke guide section 5 through the smoke outlet 31, the flow direction also needs to be changed to improve the separation of grease and gas.

[0040] In a preferred embodiment, refer to Figure 3 As shown, the minimum width of the air inlet is d1, the distance between the top of the first outer guide edge 111 and the inner guide body 211 is d2, the width between the first outer guide edge 111 and the first inner guide edge 212 is d3, the distance between the bottom of the second outer guide edge 311 and the inner guide body 211 is equal to d2, and the width between the second outer guide edge 311 and the second inner guide edge 213 is equal to d3; 1~2mm≤d3≤d2≤6~7mm≤d1; preferably, d1>6mm, 2mm≤d3≤d2≤6mm. By limiting the minimum size of the air inlet width, the air intake volume is ensured. At the same time, by limiting the distance between the top of the first outer guide edge 111 and the inner guide body 211, and the width between the first outer guide edge 111 and the first inner guide edge 212, the flow velocity of the oil fumes entering the smoke inlet guide section 4 is ensured.

[0041] The included angle between the two first outer guide edges 111 is α, and the included angle between the two first inner guide edges 212 is β; 30~40°≤α=β≤70~80°. Preferably, 40°≤α=β≤70°. By limiting the included angle between the two first outer guide edges 111, the tilt angle of the first outer guide edges 111 is limited, and the inclined surface of the first outer guide edges 111 is used to guide the oil fumes into the smoke inlet guide section 4.

[0042] The height of the separator column 22 is H, the height of the first inner air guide edge 212 is h, and the distance between the first outer oil mesh 1 and the inner guide body 211 is D; the height of the second inner air guide edge 213 is equal to h, and the distance between the second outer oil mesh 3 and the inner guide body 211 is equal to D; 5~6mm≤h<H<D≤11~12mm. Preferably, 6mm≤h<H<D≤12mm.

[0043] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An oil fume separation mesh, comprising a first outer oil mesh, an inner oil mesh, and a second outer oil mesh, wherein the inner oil mesh is disposed between the first and second outer oil meshes, characterized in that: The inner oil mesh is provided with spaced inner guides, and there is a cavity between adjacent inner guides. A partition column is provided in the cavity and divides the cavity into two independent inner air channels. The first outer oil mesh is provided with a smoke inlet, and the second outer oil mesh is provided with a smoke outlet. A separation air channel is formed between the smoke inlet, the inner air channel and the smoke outlet.

2. The oil fume separation mesh according to claim 1, characterized in that: The inner airway includes a first guide section, a second guide section, and a third guide section distributed along the length direction; the first guide section, the second guide section, and the third guide section are arranged at relative inclinations along the length direction of the inner airway.

3. The oil fume separating net according to claim 2, characterized in that: The second guide section is located between the first guide section and the third guide section. The first guide section is inclined relative to the second guide section, and the third guide section is inclined relative to the second guide section.

4. The oil fume separating net according to claim 3, characterized in that: The inner guide includes an inner guide body, a first inner guide edge, and a second inner guide edge; the first inner guide edge is disposed on the inner guide body, extending towards the first outer oil mesh and inclined towards the partition column; the second inner guide edge is disposed on the inner guide body, extending towards the second outer oil mesh and inclined towards the partition column; the first guide section is located between the first inner guide edge and the partition column, the second guide section is located between the inner guide body and the partition column, and the third guide section is located between the second inner guide edge and the partition column.

5. The oil fume separating net according to claim 4, characterized in that: A first outer air guide is provided on both sides of the smoke inlet, and a smoke inlet guide section is formed between the first outer air guide and the first inner air guide; the smoke inlet, the smoke inlet guide section and the first guide section are connected; the smoke inlet, the smoke inlet guide section and the first guide section are spaced apart in cross-section.

6. The oil fume separating net according to claim 5, characterized in that: A second outer air guide is provided on both sides of the smoke outlet, and a smoke outlet guide section is formed between the second outer air guide and the second inner air guide; the smoke outlet, the smoke outlet guide section and the third guide section are connected; the smoke outlet, the smoke outlet guide section and the third guide section are spaced apart in cross-section.

7. The oil fume separating net according to claim 5, characterized in that: The width between the two first outer air guide edges gradually narrows along the direction closer to the inner oil mesh.

8. The oil fume separation mesh according to claim 6, characterized in that: The minimum width of the air inlet is d1, the distance between the top of the first outer air guide edge and the body of the inner air guide is d2, and the width between the first outer air guide edge and the first inner air guide edge is d3. 1~2mm≤d3≤d2≤6~7mm≤d1.

9. The oil fume separating net according to claim 6, characterized in that: The angle between the two first outer guide edges is α, and the angle between the two first inner guide edges is β; 30~40°≤α=β≤70~80°.

10. The oil fume separation mesh according to claim 4, characterized in that: The height of the separator column is H, the height of the first inner air guide is h, and the distance between the first outer oil mesh and the inner air guide body is D; 5~6mm≤h<H<D≤11~12mm.

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