Grease separation device and range hood

Abstract

The utility model belongs to the technical field of range hoods, and particularly discloses a grease separation device and a range hood. A first oil net of the grease separation device comprises a plurality of first separation pieces arranged at intervals in the first direction and air inlets formed by the adjacent first separation pieces, and a second oil net comprises a plurality of second separation pieces arranged at intervals in the first direction and air outlets formed by the adjacent second separation pieces. The first separating part is provided with a first blocking part extending towards the second separating part, the second separating part is provided with a second blocking part extending towards the first separating part, and the first separating part and the second separating part are arranged in a staggered mode so that an air guide channel can be formed between the first blocking part and the second blocking part adjacent to the first blocking part; in the first direction, the oil screen assembly is provided with a first separation area and a second separation area, and the width of an air guide channel in the first separation area is smaller than that of an air guide channel in the second separation area. The grease separation device disclosed by the utility model can reduce oil fume escape, improve the grease separation degree and prolong the service life of a range hood.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an oil separation device and a range hood. Background Art

[0002] A range hood is a device used to suck and exhaust the oil fume generated during cooking. The oil fume is sucked in from the air inlet, contacts the inner cavity of the range hood and condenses to form oil scale that is not easy to clean. The long-term accumulation of oil scale will form a solidified layer, increasing the difficulty of cleaning the cavity. At the same time, under the action of the impeller of the fan rotating and colliding with the oil fume particles and the impeller centrifugally throwing off the oil fume particles, the surface of the blade and the inner wall surface of the volute are adhered by oil stains, which will make the impeller heavier, the passage narrower, and the inner wall surface roughness larger, resulting in problems with the dynamic balance of the impeller and an increase in the air duct resistance, reducing the air suction and exhaust performance of the range hood and also increasing the noise. Therefore, a double-layer oil screen is generally added at the front end of the air inlet of the range hood to improve oil separation and reduce the particulate matter entering the fan. A separation channel is formed between the double-layer oil screens, and the oil fume flows in the separation channel and forms oil separation by colliding with the oil screen.

[0003] The channel width of the separation channel of the existing double-layer oil screen is generally evenly distributed, but the oil fume concentration and the oil fume distribution are non-uniform, resulting in poor oil separation effect of the double-layer oil screen and easy oil fume escape. Summary of the Utility Model

[0004] The first technical problem solved by the utility model is to provide an oil separation device that can solve the problems that the width of the separation channel of the existing double-layer oil screen is equal, the oil fume is easy to escape, and the oil separation effect is poor.

[0005] The second technical problem solved by the utility model is to provide a range hood that solves the problems that the width of the separation channel of the existing double-layer oil screen is equal, the oil fume is easy to escape, and the oil separation effect is poor through the above oil separation device.

[0006] The above first technical problem is solved by the following technical solutions:

[0007] Provided is an oil separation device, including an oil mesh assembly. The oil mesh assembly includes a first oil mesh and a second oil mesh arranged at intervals along the direction of oil fume flow. The first oil mesh includes a plurality of first separation members. An air inlet is formed between two adjacent first separation members, and the plurality of first separation members are arranged at intervals in sequence along a first direction. The second oil mesh includes a plurality of second separation members. An air outlet is formed between two adjacent second separation members, and the plurality of second separation members are arranged at intervals in sequence along the first direction. The first separation member includes a first blocking portion extending towards the second separation member, and the second separation member includes a second blocking portion protruding and extending towards the first separation member. The first separation member and the second separation member are staggered so that a wind guiding channel is formed between the first blocking portion and the second blocking portion adjacent to the first blocking portion.

[0008] Wherein, along the first direction, the oil mesh assembly has a first separation area and a second separation area, and the width of the wind guiding channel in the first separation area is smaller than the width of the wind guiding channel in the second separation area.

[0009] Compared with the background art, the oil separation device of the present utility model has the following beneficial effects: The first separation member of the first oil mesh includes a first blocking portion extending towards the second separation member, and the second separation member of the second oil mesh includes a second blocking portion extending towards the first separation member. The first separation member and the second separation member are staggered so that a wind guiding channel is formed between the first blocking portion and the second blocking portion adjacent to the first blocking portion. Along the first direction, the oil mesh assembly has a first separation area and a second separation area, and the width of the wind guiding channel in the first separation area is smaller than the width of the wind guiding channel in the second separation area. That is to say, the widths S of the plurality of wind guiding channels of the oil mesh assembly are non-uniformly distributed along the first direction. The first separation area is the main collision area of the oil fume, where the oil fume has a fast flow rate and a large flow volume. The width of the wind guiding channel in this area is smaller than the width of the wind guiding channel in the second separation area. The second separation area is the secondary collision area of the oil fume, where the oil fume has a slightly slower flow rate and a smaller flow volume, and mostly the escaped part of the oil fume passes through. In the first separation area, due to the smaller width of the wind guiding channel, the collision intensity between the oil fume flowing through the wind guiding channel and the first blocking portion and the second blocking portion is enhanced, accelerating the oil separation. While in the second separation area, the width of the wind guiding channel is larger, and the flow resistance is smaller, which is conducive to accelerating the concentration of some of the oil fume near the first separation area and flowing towards the second separation area, increasing the oil fume inhalation volume in the second separation area, ensuring the smoking effect, reducing the occurrence of oil fume escape, and being able to make full use of the wind guiding channel in the second separation area for oil separation, improving the overall separation degree of the oil separation device, reducing the oil pollution formed by the oil fume inside the range hood to a certain extent, and prolonging the service life of the range hood.

[0010] In one embodiment, along the first direction, the first separation region and the second separation region are arranged in sequence, and the widths of the plurality of air guiding channels increase in sequence, so that the widths of the plurality of air guiding channels in the first separation region are all smaller than the widths of the plurality of air guiding channels in the second separation region; or,

[0011] The widths S1 of the plurality of air guiding channels in the first separation region are equal, the widths S2 of the plurality of air guiding channels in the second separation region are equal, and S1 < S2.

[0012] In one embodiment, the first separation member includes a first shielding plate, and bending flanges are arranged at both ends of the first shielding plate and face the second separation member to form the first blocking portion. The second separation member includes a second shielding plate, and bending flanges are arranged at both ends of the second shielding plate and face the first separation member to form the second blocking portion. The minimum distance between the first blocking portion and the second blocking portion adjacent to the first blocking portion forms the width S of the air guiding channel. Among them, the bending angles of the plurality of first blocking portions are not equal, and / or the bending angles of the plurality of second blocking portions are not equal, and / or the shielding lengths of the plurality of first shielding plates are not equal, and / or the shielding lengths of the plurality of second shielding plates are not equal, so that the widths of the plurality of air guiding channels are different.

[0013] In one embodiment, the first separation member includes a first shielding plate, and bending flanges are arranged at both ends of the first shielding plate and face the second separation member to form the first blocking portion. The second separation member includes a second shielding plate, and bending flanges are arranged at both ends of the second shielding plate and face the first separation member to form the second blocking portion. The second shielding plate has an arc-shaped protrusion at the air inlet to form a flow splitting portion. The projections of the first shielding plate and the second shielding plate in the thickness direction of the oil screen assembly partially overlap so that the first blocking portion and the second blocking portion are arranged in a buckled manner. The minimum distance between the flow splitting portion and the first blocking portion forms the width of the air guiding channel. Among them, the bending angles of the plurality of first blocking portions are not equal, and / or the shielding lengths of the plurality of first shielding plates are not equal, and / or the protrusion radii of the plurality of flow splitting portions are not equal, so that the widths of the plurality of air guiding channels are different.

[0014] In one embodiment, the oil screen assembly is correspondingly arranged above two stoves arranged in parallel. The oil screen assembly has two first separation regions arranged in the middle and two second separation regions located at both ends of the two first separation regions. The width of the first separation region along the first direction is H1, the distance between the center of the stove and the center line of the oil screen assembly is H2, and the total width of the first separation region and the second separation region is H3, and 0.8H3 > H1 ≥ H2.

[0015] In one embodiment, the lengths of the air inlet and the air outlet extend along a second direction. Along the second direction, the oil screen assembly has a third separation region and a fourth separation region, and the width of the air guiding channel in the third separation region is smaller than the width of the air guiding channel in the fourth separation region.

[0016] In one embodiment, along the first direction, the third separation region is separated to form the first separation region and the second separation region. The fourth separation region extends along the first direction. The width of the air guiding channel in the first separation region is S1, the width of the air guiding channel in the second separation region is S2, and the width of the air guiding channel in the fourth separation region is S4. S1 < S2 and S1 < S4; or,

[0017] Along the second direction, the third separation region and the fourth separation region are combined to form the first separation region. The second separation region extends along the second direction. The width of the air guiding channel in the second separation region is S2, the width of the air guiding channel in the third separation region is S3, and the width of the air guiding channel in the fourth separation region is S4. S3 < S4 ≤ S2; or,

[0018] The third separation region coincides with the first separation region. The fourth separation region extends along the first direction and the second separation region extends along the second direction and partially coincides to form a fifth separation region. The width of the air guiding channel in the first separation region is S1, the width of the air guiding channel in the second separation region is S2, the width of the air guiding channel in the fourth separation region is S4, and the width of the air guiding channel in the fifth separation region is S5. S1 < S2 ≤ S5 and S1 < S4 ≤ S5.

[0019] In one embodiment, along the second direction, the length of the fourth separation region is L1, and the length of the oil screen assembly is L. 0.2L ≤ L1 ≤ 0.4L.

[0020] In one embodiment, the lengths of the first separation member and the second separation member extend along the second direction. Along the second direction, the third separation region and the fourth separation region are arranged in sequence, and the width of the same air guiding channel gradually increases, so that the width of the air guiding channel in the third separation region is smaller than the width of the air guiding channel in the fourth separation region; or,

[0021] Along the second direction, the width S3 of the same air guiding channel in the third separation region is equal, and the width S4 of the same air guiding channel in the fourth separation region is equal. S3 < S4.

[0022] The above second technical problem is solved by the following technical solution:

[0023] Provide an oil fume machine, including the above grease separation device.

[0024] Compared with the background art, the oil fume machine of the present utility model has the following beneficial effects: The oil mesh assembly of its grease separation device has a first separation area and a second separation area. The widths S of the plurality of air guiding channels of the oil mesh assembly are non-uniformly distributed along the first direction. The first separation area is the main collision area of the oil fume, where the flow rate of the oil fume is fast and the flow rate is large. The width of the air guiding channel in this area is smaller than that in the second separation area. The second separation area is the secondary collision area of the oil fume, where the flow rate of the oil fume is slightly slower and the flow rate is less, and mostly the escaped part of the oil fume passes through. The width of the air guiding channel in the first separation area is smaller, which enhances the collision intensity between the oil fume flowing through the air guiding channel and the first blocking part and the second blocking part, accelerating the grease separation. While the width of the air guiding channel in the second separation area is larger, the flow resistance is smaller, which is conducive to accelerating the concentration of part of the oil fume near the first separation area and flowing towards the second separation area, increasing the amount of oil fume inhaled in the second separation area, ensuring the smoking effect, reducing the occurrence of oil fume escape, and being able to make full use of the air guiding channel in the second separation area for grease separation, improving the overall separation degree of the grease separation device, reducing the oil pollution formed by the oil fume inside the oil fume machine to a certain extent, and prolonging the service life of the oil fume machine. Description of the Drawings

[0025] Figure 1 Structural schematic diagram of the oil mesh assembly provided by an embodiment of the present utility model Figure 1 ;

[0026] Figure 2 Structural sectional view of the oil mesh assembly provided by an embodiment of the present utility model;

[0027] Figure 3 For Figure 2 Partial enlarged schematic view of part A in

[0028] Figure 4 Main structural view of the oil fume machine provided by an embodiment of the present utility model;

[0029] Figure 5 Side structural view of the oil fume machine provided by an embodiment of the present utility model;

[0030] Figure 6 Structural schematic diagram of the oil mesh assembly provided by an embodiment of the present utility model Figure 2 ;

[0031] Figure 7 For Figure 6 Structural sectional view along the B-B plane in

[0032] Figure 8 is Figure 7 a partial enlarged schematic view of part C in

[0033] Figure 9 a schematic diagram showing the division of the separation area provided by the embodiment of the present utility model Figure 1 ;

[0034] Figure 10 is a partial enlarged schematic view of part D in

[0035] Figure 11 a schematic diagram showing the division of the separation area provided by the embodiment of the present utility model Figure 2 ;

[0036] Figure 12 is a schematic diagram showing the division of the separation area provided by the embodiment of the present utility model Figure 3 .

[0037] Reference numeral description:

[0038] 1. Oil screen assembly; 11. First oil screen; 111. First separation member; 1111. First blocking portion; 1112. First baffle; 112. Air inlet; 12. Second oil screen; 121. Second separation member; 1211. Second blocking portion; 1212. Second baffle; 1213. Flow dividing portion; 122. Air outlet; 13. Air guiding channel;

[0039] 101. First separation area; 102. Second separation area; 103. Third separation area; 104. Fourth separation area; 105. Fifth separation area;

[0040] 10. Cooker; 20. Openable panel. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In existing range hoods, the channel widths of the separation channels of the double-layer oil mesh are generally evenly distributed. For the double-layer oil mesh with adjustable channel widths, all separation channels are uniformly enlarged or reduced. It can be understood that this adjustment method only aggregates double-layer oil meshes with the same width of different types, and does not effectively solve the problems that oil fumes are likely to escape and the oil separation effect is poor during the use of the double-layer oil mesh. The inventor of the utility model found through research that due to the different distances between different positions of the double-layer oil mesh and the cooking stove and the fan, the amounts of oil fumes passing through are different. For some oil meshes with a large amount of oil fumes passing through, a large amount of oil fumes pass through this area, and the oil separation effect of this part of the oil mesh is poor, and it is easy to cause oil fume escape; while some oil meshes with a small amount of oil fumes passing through are not effectively utilized. Therefore, Embodiment 1 and Embodiment 2 of the present utility model respectively provide an oil separation device and a range hood to solve the above problems.

[0046] Embodiment 1

[0047] As Figures 1 - 3As shown in the figure, the embodiment of the present utility model first provides an oil separation device. The oil separation device includes an oil mesh assembly 1. The oil mesh assembly 1 includes a first oil mesh 11 and a second oil mesh 12 that are arranged at intervals along the direction of oil fume flow. The first oil mesh 11 includes a plurality of first separation members 111. An air inlet 112 is formed between two adjacent first separation members 111, and the plurality of first separation members 111 are arranged at intervals in sequence along the first direction. The second oil mesh 12 includes a plurality of second separation members 121. An air outlet 122 is formed between two adjacent second separation members 121, and the plurality of second separation members 121 are arranged at intervals in sequence along the first direction. The first separation member 111 includes a first blocking portion 1111 extending towards the second separation member 121. The second separation member 121 includes a second blocking portion 1211 extending towards the first separation member 111. The first separation member 111 and the second separation member 121 are arranged staggeredly so that a wind guiding channel 13 is formed between the first blocking portion 1111 and the second blocking portion 1211 adjacent to the first blocking portion 1111. The wind guiding channel 13 extends along the first blocking portion 1111 and the second blocking portion 1211.

[0048] Among them, along the first direction, the oil mesh assembly 1 has a first separation area 101 and a second separation area 102. The width of the wind guiding channel 13 in the first separation area 101 is smaller than the width of the wind guiding channel 13 in the second separation area 102. That is to say, the widths S of the plurality of wind guiding channels 13 of the oil mesh assembly 1 are non-uniformly distributed along the first direction. The first separation area 101 is the main collision area of the oil fume. The flow rate of the oil fume is fast and the flow rate is large. The width of the wind guiding channel 13 in this area is smaller than the width of the wind guiding channel 13 in the second separation area 102. The second separation area 102 is the secondary collision area of the oil fume. The flow rate of the oil fume is slightly slower and the flow rate is less. Most of the escaped oil fume passes through. In the first separation area 101, due to the smaller width of the wind guiding channel 13, the collision intensity between the oil fume flowing through the wind guiding channel 13 and the first blocking portion 1111 and the second blocking portion 1211 is enhanced, accelerating the oil separation. And the width of the wind guiding channel 13 in the second separation area 102 is larger, and the flow resistance is smaller, which is conducive to accelerating the concentration of some of the oil fume near the first separation area 101 and flowing towards the second separation area 102, increasing the oil fume inhalation volume in the second separation area 102, ensuring the smoking effect, reducing the occurrence of oil fume escape, and being able to make full use of the wind guiding channel 13 in the second separation area 102 for oil separation, improving the overall separation degree of the oil separation device.

[0049] It can be understood that along the first direction, the oil mesh assembly 1 may include one or more first separation regions 101 and one or more second separation regions 102. That is, the regions of the oil mesh assembly 1 can be set according to the amount of oil fume passing through. For example, in the middle of the oil mesh assembly 1 along the first direction, there may be a first separation region 101, and on both sides along the first direction, there may be a second separation region 102 respectively; the oil mesh assembly may also have a first separation region 101 near the left side along the first direction and a second separation region 102 along the right side; or the oil mesh assembly may have a first separation region 101 near the right side along the first direction and a second separation region 102 along the left side.

[0050] The value range of the width S of the air guiding channel 13 is 2.8 mm to 4 mm. Within this range, the width of the air guiding channel 13 in the first separation region 101 and the width of the air guiding channel 13 in the second separation region 102 can be arbitrarily taken, as long as the width of the air guiding channel 13 in the first separation region 101 is less than the width of the air guiding channel 13 in the second separation region 102.

[0051] In order to increase the uniformity of the change in the width of the air guiding channel 13 and make the flow rate of the oil fume more uniform within the entire range of the oil mesh assembly 1, along the first direction, the first separation region 101 and the second separation region 102 are arranged in sequence, and the widths of the multiple air guiding channels 13 gradually increase in sequence, so that the widths of the multiple air guiding channels 13 in the first separation region 101 are all less than the widths of the multiple air guiding channels 13 in the second separation region 102.

[0052] Of course, in other embodiments, the widths S1 of the multiple air guiding channels 13 in the first separation region 101 can also be equal, the widths S2 of the multiple air guiding channels 13 in the second separation region 102 can be equal, and S1 < S2. This can reduce the processing difficulty and achieve the effect of non-uniform distribution of the widths of the air guiding channels 13 within the entire range of the oil mesh assembly 1.

[0053] In this embodiment, the width variation of the air guiding channel 13 is realized by the structures of the first separating member 111 and the second separating member 121. The first separating member 111 includes a first shielding plate 1112, and bending flanges are arranged at both ends of the first shielding plate 1112 and face the second separating member 121 to form a first blocking portion 1111. The second separating member 121 includes a second shielding plate 1212, and bending flanges are arranged at both ends of the second shielding plate 1212 and face the first separating member 111 to form a second blocking portion 1211. The projection parts of the first shielding plate 1112 and the second shielding plate 1212 in the thickness direction of the oil screen assembly 1 overlap each other so that the first blocking portion 1111 and the second blocking portion 1211 are arranged in a buckled manner. This concave structure of the first separating member 111 and the second separating member 121 increases the flow path of the oil fume in the air guiding channel 13 and enables better contact separation.

[0054] The minimum distance between the first blocking portion 1111 and the second blocking portion 1211 adjacent to the first blocking portion 1111 forms the width S of the air guiding channel 13. There are various adjusting structures for the unequal widths of multiple air guiding channels 13. By changing the bending angle of the first blocking portion 1111, changing the shielding length of the first shielding plate 1112, changing the bending angle of the second blocking portion 1211, and changing the shielding length of the second shielding plate 1212, using at least one of the above four adjusting structures can achieve different widths of multiple air guiding channels 13.

[0055] In addition, making the bending length of the second blocking portion 1211 greater than that of the first blocking portion 1111 is conducive to guiding the oil fume to flow towards the first blocking portion 1111 and hitting the concave surface of the first oil screen 11, thereby improving the oil separation degree. Moreover, along the thickness direction of the oil screen assembly 1, the second blocking portion 1211 and the first blocking portion 1111 can also have an overlapping length h1, as Figure 3 shown. When the oil fume flows along the air guiding channel 13, this can further guide the flow direction of the oil fume, realize the impact on the concave surface of the first oil screen 11, enhance the impact intensity, and strengthen the oil separation effect.

[0056] It should be noted that since the air guiding channel 13 is an irregular shape, within the shielding length range of the entire air guiding channel 13, its width also varies. The parameter that determines the oil fume separation performance of the air guiding channel 13 is its minimum width. Therefore, the above-mentioned widths of the air guiding channel 13 all refer to the minimum width of the air guiding channel 13.

[0057] In other embodiments, the minimum width of the air guiding channel 13 can also be realized by other structures, such as Figure 3As shown, the second baffle 1212 has an arc protrusion facing the air inlet 112 to form a flow splitting portion 1213. The minimum distance between the flow splitting portion 1213 and the first blocking portion 1111 forms the width of the air guiding channel 13. In this way, the widths of multiple air guiding channels 13 can be made unequal by at least one of the following three adjustment structures: the bending angles of multiple first blocking portions 1111 are unequal, the blocking lengths of multiple first baffles 1112 are unequal, and the protrusion radii of multiple flow splitting portions 1213 are unequal, all of which can achieve different widths of multiple air guiding channels 13.

[0058] This arc protrusion of the second oil screen 12 forms the narrowest part of the air guiding channel 13 through the front end of the flow splitting portion 1213 and the first blocking portion 1111, which can force the oil fume to flow evenly to the air guiding channels 13 on both sides, making the flow velocity more uniform, reducing turbulence and noise. At the same time, the flow splitting portion 1213 can increase the collision intensity and improve the oil-gas separation. Moreover, since the second oil screen 12 is directly impacted by the oncoming flow of the oil fume, the flow splitting portion 1213 can also increase the strength of the second oil screen 12 to reduce the whistling caused by the deformation of the second oil screen 12.

[0059] It should be noted that the width S of the above air guiding channel 13 can be formed by the minimum distance between the flow splitting portion 1213 and the first blocking portion 1111, or by the minimum distance between the first blocking portion 1111 and the second blocking portion 1211. As Figure 3 shown, the non-uniform setting of the width S of the air guiding channel 13 is achieved by different blocking lengths of the second baffle 1212. It can be clearly seen in the figure that S1 < S2.

[0060] The division of the first separation area 101 and the second separation area 102 is determined according to the placement position of the cooking appliance 10 and the position of the fan. Specifically, for the range hood of a double cooking appliance 10, such as Figure 4As shown in the figure, the oil mesh assembly 1 is correspondingly arranged above two juxtaposed cooktops 10. The oil mesh assembly 1 has two first separation regions 101 arranged in the middle and two second separation regions 102 located at both ends of the two first separation regions 101. That is, the middle region of the oil mesh assembly 1 is the main collision region of the oil fume, and the two side regions are the secondary collision regions of the oil fume. The first direction is the left - right direction of the oil mesh assembly 1, and the second direction is the up - down direction of the oil mesh assembly 1. For the left - hand cooktop 10, the second separation region 102 is located on the left side of the second separation region 102 along the first direction; for the right - hand cooktop 10, the second separation region 102 is located on the right side of the second separation region 102 along the first direction. The width of the first separation region 101 along the first direction is H1, the distance between the center of the cooktop 10 and the center line of the oil mesh assembly 1 is H2, and the total width of the first separation region 101 and the second separation region 102 is H3, where 0.8H3>H1≥H2. This value range can better divert the oil fume in the two regions to improve the oil - grease separation effect.

[0061] In the first separation region 101, the width S1 of the air guiding channel 13 can take the minimum value of 2.8 within the range of 2.8 mm - 4 mm, and the width S1 of the air guiding channel 13 is preferably 3 mm. In the second separation region 102, the width S2 of the air guiding channel 13 can take the maximum value of 4 mm within the range of 2.8 mm - 4 mm, and the width S2 of the air guiding channel 13 is preferably 3.8 mm.

[0062] As Figure 5 shown in the figure, the oil fume formed by the cooktop 10 rises and flows along the oil mesh assembly 1. After encountering the opening - closing panel 20 of the range hood, it will form a swirl and rotation in the upper region of the oil mesh assembly 1 close to the opening - closing panel 20, and the flow velocity in the region decreases. The lengths of the air inlet 112 and the air outlet 122 extend along the second direction. Along the second direction, the oil mesh assembly 1 has a third separation region 103 and a fourth separation region 104. The width of the air guiding channel 13 in the third separation region 103 is smaller than the width of the air guiding channel 13 in the fourth separation region 104, so that the width of the air guiding channel 13 of the oil mesh assembly 1 forms a non - uniform distribution in the second direction. The fourth separation region 104 is located in the region of the oil mesh assembly 1 closer to the opening - closing panel 20. Appropriately increasing the width of the air guiding channel 13 in this region can reduce the flow resistance, guide the oil fume in the third separation region 103 to flow upward, reduce the escape of the oil fume at the third separation region 103, and perform oil - grease separation. Make full use of the air guiding channel 13 in the fourth separation region 104 for oil - grease separation to improve the overall separation degree of the oil - grease separation device.

[0063] Along the second direction, the fourth separation region 104 is arranged above the third separation region 103, as Figure 6As shown, the length of the fourth separation region 104 is L1, and the length of the oil screen assembly 1 is L, where 0.2L ≤ L1 ≤ 0.4L, which is more in line with the range of the region where the upper-end flow rate is slower and the amount of oil fume is less along the length direction of the entire oil screen assembly 1, conforming to the actual working conditions.

[0064] Similarly, there are also two implementation methods for making the widths of the same air guiding channels 13 of the oil screen assembly 1 unequal in the second direction. One of them is as follows: Along the second direction, the third separation region 103 and the fourth separation region 104 are arranged in sequence, and the width of the same air guiding channel 13 gradually increases, so that the width of the air guiding channel 13 in the third separation region 103 is smaller than the width of the air guiding channel 13 in the fourth separation region 104. That is, along the second direction, the width of the same air guiding channel 13 gradually increases, and this gradient structure has a better guiding effect on the oil fume.

[0065] Of course, in other embodiments, along the second direction, the widths S3 of the same air guiding channels 13 in the third separation region 103 can also be equal, and the widths S4 of the same air guiding channels 13 in the fourth separation region 104 can be equal, where S3 < S4. That is, at the connection of the third separation region 103 and the fourth separation region 104, the width of the same air guiding channel 13 changes abruptly to form a non-uniform change (refer to Figure 9 and Figure 10 ), and this structure is relatively easy to process.

[0066] To simplify the setting of the width change of the air guiding channels 13, as Figure 9 shown, along the first direction, the third separation region 103 is separated into the first separation region 101 and the second separation region 102. In this way, the fourth separation region 104 extends along the first direction and is arranged above the first separation region 101 and the second separation region 102. The width of the air guiding channel 13 in the first separation region 101 is S1, the width of the air guiding channel 13 in the second separation region 102 is S2, and the width of the air guiding channel 13 in the fourth separation region 104 is S4 (refer to Figure 7 and Figure 8 ), where S1 < S2, and S1 < S4, and the values of S2 and S4 can be slightly different.

[0067] It should be noted that in the first separation region 101, the widths S1 of the multiple air guiding channels 13 can be gradually changed or equal along the first direction; similarly, in the second separation region 102, the widths S2 of the multiple air guiding channels 13 can be gradually changed or equal along the first direction, as long as S1 < S2 and S1 < S4 are satisfied.

[0068] Certainly, in other embodiments, the widths S2 of the plurality of air guiding channels 13 in the second separation region 102 may be equal to the widths S4 of the plurality of air guiding channels 13 in the fourth separation region 104, and the maximum value of 4 mm is selected from the value range of 2.8 mm to 4 mm of the width S of the air guiding channel 13, preferably 3.8 mm.

[0069] In the grease separation device provided in the first embodiment, the oil screen assembly 1 is usually inclined. Under the action of the first blocking portions 1111 at both ends, the separated oil stains flow downward along the first separating member 111 and are collected by an oil stain collection assembly such as a detachable oil cup (not shown in the figure) provided below, which is relatively convenient for cleaning.

[0070] Embodiment Two

[0071] In the second embodiment of the present utility model, there is the same oil screen assembly 1 as in the first embodiment. In the first direction and the second direction, the widths of the plurality of air guiding channels 13 are non-uniformly arranged. Among them, along the second direction, the oil screen assembly 1 has a third separation region 103 and a fourth separation region 104. The width of the air guiding channel 13 in the third separation region 103 is smaller than the width of the air guiding channel 13 in the fourth separation region 104, so that the width of the air guiding channel 13 of the oil screen assembly 1 is non-uniformly arranged in the second direction. Appropriately increasing the width of the air guiding channel 13 in the fourth separation region 104 reduces the flow resistance of the area on the oil screen assembly 1 that is relatively close to the opening and closing panel 20, guides the oil fume in the third separation region 103 to flow upward and be shunted, reduces the escape of oil fume at the third separation region 103, and fully utilizes the air guiding channel 13 in the fourth separation region 104 for grease separation, thereby improving the overall separation degree of the grease separation device.

[0072] The difference in the second embodiment is that, as Figure 11 shown, along the second direction, the third separation region 103 and the fourth separation region 104 are combined to form a first separation region 101, and the second separation region 102 extends along the second direction and is arranged on one side of the third separation region 103 and the fourth separation region 104. In this way, the widths of the plurality of air guiding channels 13 in the second separation region 102 are S2, the widths of the plurality of air guiding channels 13 in the third separation region 103 are S3, and the widths of the plurality of air guiding channels 13 in the fourth separation region 104 are S4, where S3 < S4 ≤ S2. It can not only achieve non-uniform arrangement of the widths of the air guiding channels 13 in the entire area of the oil screen assembly 1, but also has a simple regional division, meeting the requirements of the oil fume distribution area formed by the range hood.

[0073] It should be noted that within the third separation region 103, the widths S3 of the plurality of air guiding channels 13 may be gradually changed or equal along the first direction; similarly, within the fourth separation region 104, the widths S4 of the plurality of air guiding channels 13 may be gradually changed or equal along the first direction, as long as S3 < S4 ≤ S2 is satisfied.

[0074] Embodiment III

[0075] The third embodiment of the present utility model has the same oil mesh assembly 1 as in the first embodiment. As Figure 12 shown, in the first direction and the second direction, the widths of the plurality of air guiding channels 13 in the oil mesh assembly 1 are non-uniformly distributed. Among them, along the second direction, the oil mesh assembly 1 has a third separation region 103 and a fourth separation region 104. The width of the air guiding channel 13 in the third separation region 103 is smaller than the width of the air guiding channel 13 in the fourth separation region 104, so that the widths of the air guiding channels 13 in the oil mesh assembly 1 form a non-uniform distribution in the second direction. Appropriately increasing the width of the air guiding channel 13 in the fourth separation region 104 reduces the flow resistance of the region of the oil mesh assembly 1 closer to the opening and closing panel 20, guides the oil fume in the third separation region 103 to flow upward in a split manner, reduces the escape of oil fume at the third separation region 103, and fully utilizes the air guiding channels 13 in the fourth separation region 104 for oil-grease separation, improving the overall separation degree of the oil-grease separation device.

[0076] The difference in this third embodiment is that along the second direction, the third separation region 103 and the first separation region 101 coincide to form the same region, the fourth separation region 104 extends along the first direction, and the second separation region 102 extends along the second direction and partially coincides. The coincident region is used as the fifth separation region 105. Therefore, the width of the air guiding channel 13 in the first separation region 101 is S1, the widths of the plurality of air guiding channels 13 in the second separation region 102 are S2, the widths of the plurality of air guiding channels 13 in the fourth separation region 104 are S4, and the widths of the plurality of air guiding channels 13 in the fifth separation region 105 are S5, where S1 < S2 ≤ S5 and S1 < S4 ≤ S5. The fifth separation region 105 is located at the upper corner position of the oil mesh assembly 1, where the amount of oil fume is the smallest and the flow rate is slowest. The widths of the plurality of air guiding channels 13 in the fifth separation region 105 are the largest, which can effectively guide the oil fume to flow into the fifth separation region 105. At the same time, the widths of the air guiding channels 13 in the first separation region 101, the second separation region 102, and the fourth separation region 104 are still non-uniformly arranged, forming multi-gradient oil fume split flow and oil-grease separation, which is more suitable for the oil fume distribution in a complex cooking environment.

[0077] It should be noted that within the first separation region 101, the widths S1 of the plurality of air guiding channels 13 may be gradually changing or equal along the first direction; within the second separation region 102, the widths S2 of the plurality of air guiding channels 13 may be gradually changing or equal along the first direction; similarly, within the fourth separation region 104, the widths S4 of the plurality of air guiding channels 13 may be gradually changing or equal along the first direction; within the fifth separation region 105, the widths S5 of the plurality of air guiding channels 13 may be gradually changing or equal along the first direction, as long as S1 < S2 ≤ S5 and S1 < S4 ≤ S5 are satisfied.

[0078] Embodiment 4

[0079] Embodiment 4 of the present utility model provides an oil fume machine, and the oil fume machine includes an oil separation device as in any of the above embodiments. The oil mesh assembly 1 of the oil separation device has a first separation region 101 and a second separation region 102. The widths S of the plurality of air guiding channels 13 of the oil mesh assembly 1 are non-uniformly distributed along the first direction. The first separation region 101 serves as the main collision region for the oil fume, where the flow rate and the flow volume of the oil fume are fast and large. The width of the air guiding channels 13 in this region is smaller than the width of the air guiding channels 13 in the second separation region 102. The second separation region 102 serves as the secondary collision region for the oil fume, where the flow rate and the flow volume of the oil fume are slightly slower and less, and mostly the escaped part of the oil fume passes through. The width of the air guiding channels 13 in the first separation region 101 is smaller, which enhances the collision intensity between the oil fume flowing through the air guiding channels 13 and the first blocking part 1111 and the second blocking part 1211, accelerating the oil separation. While the width of the air guiding channels 13 in the second separation region 102 is larger, the flow resistance is smaller, which is conducive to accelerating the concentration of a part of the oil fume near the first separation region 101 and flowing towards the second separation region 102, increasing the oil fume inhalation volume in the second separation region 102, ensuring the smoking effect, reducing the occurrence of oil fume escape, and being able to fully utilize the air guiding channels 13 in the second separation region 102 for oil separation, improving the overall separation degree of the oil separation device, reducing the oil pollution formed by the oil fume inside the oil fume machine to a certain extent, and prolonging the service life of the oil fume machine.

[0080] In the specific content of the above specific implementation manners, the technical features can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope described in this specification.

[0081] The specific content of the above specific embodiments only expresses several embodiments of the present utility model. Its description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A grease separation device, comprising an oil net assembly (1), wherein the oil net assembly (1) comprises a first oil net (11) and a second oil net (12) arranged at intervals along a flow direction of oil smoke, characterized in that: The first oil net (11) comprises a plurality of first separation members (111), an air inlet (112) is formed between two adjacent first separation members (111), and the plurality of first separation members (111) are sequentially spaced apart along a first direction; the second oil net (12) comprises a plurality of second separation members (121), an air outlet (122) is formed between two adjacent second separation members (121), and the plurality of second separation members (121) are sequentially spaced apart along the first direction; the first separation member (111) comprises a first blocking portion (1111) extending toward the second separation member (121), the second separation member (121) comprises a second blocking portion (1211) extending toward the first separation member (111), and the first separation member (111) and the second separation member (121) are staggered so that an air guide channel (13) is formed between the first blocking portion (1111) and the second blocking portion (1211) adjacent to the first blocking portion (1111); Wherein, along the first direction, the oil screen assembly (1) has a first separation area (101) and a second separation area (102), and the width of the air guide channel (13) in the first separation area (101) is smaller than the width of the air guide channel (13) in the second separation area (102).

2. The grease separation device according to claim 1, characterized in that: Along the first direction, the first separation area (101) and the second separation area (102) are arranged in sequence, and the widths of the plurality of air guide channels (13) are increased in sequence, so that the widths of the plurality of air guide channels (13) in the first separation area (101) are all smaller than the widths of the plurality of air guide channels (13) in the second separation area (102); or, The widths S1 of the plurality of air guide channels (13) in the first separation area (101) are equal, and the widths S2 of the plurality of air guide channels (13) in the second separation area (102) are equal, and S1<S2.

3. The grease separation device according to claim 1, characterized in that: The first separating member (111) comprises a first shielding plate (1112), and both ends of the first shielding plate (1112) are provided with bent flanges facing the second separating member (121) to form the first blocking portion (1111); the second separating member (121) comprises a second shielding plate (1212), and both ends of the second shielding plate (1212) are provided with bent flanges facing the first separating member (111) to form the second blocking portion (1211); the first blocking portion (1111) and the second blocking portion (1211) are connected to the first shielding plate (1112). The minimum distance between the second blocking parts (1211) adjacent to the first blocking parts (1111) forms the width S of the air guiding channel (13), wherein the bending angles of the plurality of first blocking parts (1111) are different, and / or the bending angles of the plurality of second blocking parts (1211) are different, and / or the blocking lengths of the plurality of first shielding plates (1112) are different, and / or the blocking lengths of the plurality of second shielding plates (1212) are different, so that the widths of the plurality of air guiding channels (13) are different.

4. The grease separation device according to claim 1, characterized in that: The first separating member (111) comprises a first shielding plate (1112), and the first shielding plate (1112) is provided with a bent flange at both ends thereof facing the second separating member (121) to form the first blocking portion (1111); the second separating member (121) comprises a second shielding plate (1212), and the second shielding plate (1212) is provided with a bent flange at both ends thereof facing the first separating member (111) to form the second blocking portion (1211); the second shielding plate (1212) has an arc protrusion facing the air inlet (112) to form a diverter portion (1213); the first shielding plate (1112) ) and the second baffle plate (1212) are partially overlapped in the projection direction of the thickness of the oil net assembly (1) so that the first blocking portion (1111) and the second blocking portion (1211) are interlocked, and the minimum distance between the diverter portion (1213) and the first blocking portion (1111) forms the width of the air guide channel (13), wherein the bending angles of the plurality of first blocking portions (1111) are different, and / or the blocking lengths of the plurality of first baffle plates (1112) are different, and / or the protruding radii of the plurality of diverter portions (1213) are different, so that the widths of the plurality of air guide channels (13) are different.

5. The grease separation device according to claim 1, characterized in that: The oil net assembly (1) is arranged correspondingly above two cookers (10) arranged in parallel, the oil net assembly (1) comprises two first separation areas (101) arranged in the middle and two second separation areas (102) located at both ends of the two first separation areas (101), the width of the first separation area (101) along the first direction is H1, the distance between the center of the cooker (10) and the center line of the oil net assembly (1) is H2, the total width of the first separation area (101) and the second separation area (102) is H3, and 0.8H3>H1≥H2.

6. The grease separation device according to claim 1, characterized in that: The lengths of the air inlet (112) and the air outlet (122) extend along a second direction. Along the second direction, the oil screen assembly (1) has a third separation area (103) and a fourth separation area (104). The width of the air guide channel (13) in the third separation area (103) is smaller than the width of the air guide channel (13) in the fourth separation area (104).

7. The grease separation device according to claim 6, characterized in that: Along the first direction, the third separation area (103) is separated to form the first separation area (101) and the second separation area (102), the fourth separation area (104) extends along the first direction, the width of the air guide channel (13) in the first separation area (101) is S1, the width of the air guide channel (13) in the second separation area (102) is S2, and the width of the air guide channel (13) in the fourth separation area (104) is S4, S1<S2, and S1<S4; or, Along the second direction, the third separation area (103) and the fourth separation area (104) are combined to form the first separation area (101), the second separation area (102) extends along the second direction, the width of the air guide channel (13) in the second separation area (102) is S2, the width of the air guide channel (13) in the third separation area (103) is S3, the width of the air guide channel (13) in the fourth separation area (104) is S4, S3<S4≤S2; or, The third separation area (103) overlaps with the first separation area (101), the fourth separation area (104) extends along the first direction and the second separation area (102) extends along the second direction and partially overlaps to form a fifth separation area (105), the width of the air guide channel (13) in the first separation area (101) is S1, the width of the air guide channel (13) in the second separation area (102) is S2, the width of the air guide channel (13) in the fourth separation area (104) is S4, and the width of the air guide channel (13) in the fifth separation area (105) is S5, S1<S2≤S5, and S1<S4≤S5.

8. The grease separation device according to claim 6, characterized in that: Along the second direction, the length of the fourth separation area (104) is L1, the length of the oil net assembly (1) is L, and 0.2L≤L1≤0.4L.

9. The grease separation device according to claim 6, characterized in that: The lengths of the first separation member (111) and the second separation member (121) extend along the second direction, and along the second direction, the third separation area (103) and the fourth separation area (104) are arranged in sequence, and the width of the same air guide channel (13) gradually increases, so that the width of the air guide channel (13) in the third separation area (103) is smaller than the width of the air guide channel (13) in the fourth separation area (104); or, Along the second direction, the width S3 of the same air guide channel (13) in the third separation area (103) is equal, and the width S4 of the same air guide channel (13) in the fourth separation area (104) is equal, and S3<S4.

10. A range hood, characterized in that: It comprises a grease separation device as described in any one of claims 1 to 9.

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