Oil fume intercepting fan blade, separation plate and oil fume purification device

Abstract

The present invention discloses an oil fume intercepting fan blade, a separation plate and an oil fume purification device, comprising a fixed plate and a plurality of long strip-shaped oil fume intercepting fan blades, wherein the plurality of intercepting fan blades are radially distributed along the fixed plate and fixed to the fixed plate, and a gap is provided between two adjacent intercepting fan blades, and a first collision structure is provided on the surface of the intercepting fan blade for causing the oil fume airflow to collide with the intercepting fan blade when passing through the intercepting fan blade. The oil fume intercepting fan blade, the separation plate and the oil fume purification device provided by the embodiment of the present invention enhance the surface roughness of the intercepting fan blade by adding a first collision structure to the intercepting fan blade so as to increase the number of collisions of the oil fume and to cause the oil fume to generate a vortex near the first collision so that the grease in the oil fume adheres to the first collision structure, thereby causing more grease, solid particles and other substances in the oil fume to collide and adhere to the intercepting fan blade, thereby improving the oil removal rate of the oil fume purification device and reducing pollution to the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of oil fume separation and purification equipment, and in particular to an oil fume intercepting fan blade, a separation plate and an oil fume purification device. Background Art

[0002] With the rapid development of my country's national economy, residents' income levels are getting higher and higher, and the demand for catering consumption is growing. The catering industry, such as restaurants, hotels, and hotels, is developing very rapidly. At the same time, people's awareness of health and environmental protection is also increasing, and they hope to have a healthy, clean, and environmentally friendly kitchen environment. However, the oil fume generated by the kitchens of restaurants, hotels, and homes has caused more and more serious pollution to the living environment of surrounding residents.

[0003] Since restaurants, restaurants, hotels and other catering industries and modern families produce a lot of oil fume waste gas during cooking and food processing, range hoods have become an indispensable kitchen equipment for purifying the kitchen environment in restaurants, hotels and other catering industries and modern families. Most range hoods mainly use the high-speed operation of the motor to drive the oil fume separation plate to operate, and then use the centrifugal force generated by the high-speed operation of the oil fume separation plate to separate the oil fume waste gas, so that the separated waste gas basically no longer contains oil droplets.

[0004] However, the oil and gas separation effect of the oil fume separators currently on the market is not ideal. This is because the oil fume passes through the separation disk for a short time, resulting in the oil and smoke in the oil fume not being completely separated during the rotation of the separation disk, resulting in the exhaust gas still containing oil droplets, which will not only cause the cooks to inhale more unseparated and purified oil fume and endanger their health, but also pollute the environment. Summary of the invention

[0005] The embodiment of the present invention discloses an oil fume intercepting fan blade, a separation plate and an oil fume purification device, which can increase the oil removal rate of the oil fume purification device so that the separated exhaust gas basically no longer contains oil droplets, thereby ensuring the oil fume purification efficiency and effect of the oil fume separation device and reducing harm to the health of cooking personnel and pollution to the environment.

[0006] In order to achieve the above-mentioned purpose, a first aspect of an embodiment of the present invention provides an oil fume interception blade, which is in the shape of an elongated strip and has a first collision structure on its surface for increasing the surface roughness of the interception blade to increase the probability of collision between the oil fume airflow and the interception blade.

[0007] As an optional implementation, in an embodiment of the first aspect of the present invention, the cross-section of the intercepting wind blade has one or more bends.

[0008] As an optional implementation, in an embodiment of the first aspect of the present invention, the first collision structure is provided on the inner surface of the cross section of the intercepting wind blade and / or the outer surface of the cross section of the intercepting wind blade.

[0009] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting blade includes a first end and a second end opposite to each other;

[0010] The first collision structure is a long strip protrusion, a groove or a combination of the two. The first collision structure extends from the first end to the second end, or the length direction of the long strip protrusion extends along the length direction of the intercepting wind blade, and the length of the first collision structure is less than the length of the intercepting wind blade.

[0011] As an optional embodiment, in an embodiment of the first aspect of the present invention, the first collision structure is an elongated protrusion, and the height of the elongated protrusion close to the first end is less than or equal to the height of the elongated protrusion close to the second end; or, the first collision structure is an elongated groove, and the depth of the elongated groove close to the first end is less than or equal to the depth of the elongated groove close to the second end.

[0012] As an optional implementation, in an embodiment of the first aspect of the present invention, there are multiple first collision structures, and the multiple first collision structures are arranged and distributed in the width direction of the intercepting wind blade, and two adjacent first collision structures are tightly fitted or have a gap.

[0013] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting blade includes a first end and a second end opposite to each other;

[0014] The first collision structure is a convex column, a concave pit or a combination of the two. There are multiple first collision structures, and the multiple first collision structures are arranged continuously from the first end to the second end, or the multiple first collision structures are arranged close to the first end or the second end.

[0015] As an optional implementation, in an embodiment of the first aspect of the present invention, a projection area of ​​the first collision structure on the surface of the intercepting wind blade is less than or equal to an area of ​​the surface of the intercepting wind blade.

[0016] As an optional embodiment, in an embodiment of the first aspect of the present invention, the intercepting wind blade includes a first blade portion and a second blade portion in an elongated shape, and the first side surface of the first blade portion is connected to the third side surface of the second blade portion, so that the cross-section of the intercepting wind blade is a V-shaped cross-section.

[0017] As an optional embodiment, in an embodiment of the first aspect of the present invention, the first blade portion includes a second side surface opposite to the first side surface, the second blade portion includes a fourth side surface opposite to the third side surface, and the first collision structure is provided on the second side surface and / or the fourth side surface.

[0018] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting wind blade includes a first blade portion and a second blade portion in an elongated shape, and a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting wind blade is a V-shaped cross section;

[0019] The concave side of the V-shaped cross-section is the inner side of the intercepting wind blade, and the side opposite to the inner side of the V-shaped cross-section is the outer side of the intercepting wind blade. A first transition surface and a second transition surface are provided at the intersection of the first side edge surface and the third side edge surface. The first transition surface is located on the inner side of the intercepting wind blade, and the second transition surface is located on the outer side of the intercepting wind blade.

[0020] As an optional embodiment, in an embodiment of the first aspect of the present invention, one end of the intercepting wind blade is provided with a blade root portion extending outward, and the thickness of the blade root portion gradually decreases from the end close to the intercepting wind blade to the direction away from the end of the intercepting wind blade.

[0021] A second aspect of an embodiment of the present invention provides a separation plate, characterized in that the separation plate comprises

[0022] a fixed plate; and

[0023] A plurality of long strip-shaped oil fume intercepting blades are radially distributed and fixed to a fixed plate, a gap through which oil fume can pass is formed between two adjacent intercepting blades, all or part of the intercepting blades are long strip-shaped, and a first collision structure is provided on the surface of the intercepting blade for increasing the surface roughness of the intercepting blade to increase the probability of collision between the oil fume airflow and the intercepting blade.

[0024] As an optional embodiment, in an embodiment of the second aspect of the present invention, for two adjacent interception blades, a gap is formed between the inner side of one of the interception blades and the outer side of the other interception blade, and in all or part of the gap in the oil fume separation plate, the first collision structure is provided on the inner side of the one interception blade and / or the outer side of the other interception blade.

[0025] As an optional implementation, in an embodiment of the second aspect of the present invention, the cross section of the intercepting wind blade has one or more bends, one side of the cross section is the inner side of the intercepting wind blade, and the other side of the cross section is the outer side of the intercepting wind blade;

[0026] One or more first collision structures are provided on the outer sides of all or part of the intercepting wind blades, and / or one or more first collision structures are provided on the inner sides of all or part of the intercepting wind blades.

[0027] As an optional embodiment, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a relative inner surface and an outer surface, the inner surface is located on the inner side of the intercepting wind blade, and the outer surface is located on the outer side of the intercepting wind blade, and the inner surface and / or the outer surface of the intercepting wind blade are provided with the first collision structure.

[0028] As an optional implementation, in an embodiment of the second aspect of the present invention, the cross-section of the intercepting wind blade has one or more bends.

[0029] As an optional implementation, in an embodiment of the second aspect of the present invention, the first collision structure is provided on the inner surface of the cross section of the intercepting wind blade and / or the outer surface of the cross section of the intercepting wind blade.

[0030] As an optional implementation, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a first blade portion and a second blade portion in an elongated shape, and a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting wind blade is a V-shaped cross section;

[0031] The concave side of the V-shaped cross-section is the inner side of the intercepting wind blade, and the side opposite to the inner side of the V-shaped cross-section is the outer side of the intercepting wind blade. A first transition surface and a second transition surface are provided at the intersection of the first side edge surface and the third side edge surface. The first transition surface is located on the inner side of the intercepting wind blade, and the second transition surface is located on the outer side of the intercepting wind blade.

[0032] As an optional implementation, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a first end and a second end opposite to each other, the end close to the center of the separation disk is the first end, and the end away from the center of the separation disk is the second end;

[0033] The first collision structure is a long strip protrusion, a groove or a combination of the two. The first collision structure extends from the first end to the second end, or the length direction of the long strip protrusion extends along the length direction of the intercepting wind blade, and the length of the first collision structure is less than the length of the intercepting wind blade.

[0034] As an optional embodiment, in an embodiment of the second aspect of the present invention, the first collision structure is an elongated protrusion, and the height of the elongated protrusion close to the first end is less than or equal to the height of the elongated protrusion close to the second end; or, the first collision structure is an elongated groove, and the depth of the elongated groove close to the first end is less than or equal to the depth of the elongated groove close to the second end.

[0035] As an optional implementation, in an embodiment of the second aspect of the present invention, there are multiple first collision structures, and the multiple first collision structures are arranged and distributed in the width direction of the intercepting wind blade, and two adjacent first collision structures are tightly fitted or have a gap.

[0036] As an optional implementation, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a first end and a second end opposite to each other;

[0037] The first collision structure is a convex column, a concave pit or a combination of the two. There are multiple first collision structures, and the multiple first collision structures are arranged continuously from the first end to the second end, or the multiple first collision structures are arranged close to the first end or the second end.

[0038] As an optional implementation, in an embodiment of the second aspect of the present invention, a projection area of ​​the first collision structure on the surface of the intercepting wind blade is less than or equal to an area of ​​the surface of the intercepting wind blade.

[0039] As an optional embodiment, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a first blade portion and a second blade portion in an elongated shape, and the first side surface of the first blade portion is connected to the third side surface of the second blade portion, so that the cross-section of the intercepting wind blade is a V-shaped cross-section.

[0040] As an optional embodiment, in an embodiment of the second aspect of the present invention, the first blade portion includes a second side surface opposite to the first side surface, the second blade portion includes a fourth side surface opposite to the third side surface, and the first collision structure is provided on the second side surface and / or the fourth side surface.

[0041] As an optional implementation, in an embodiment of the second aspect of the present invention, the gap between two adjacent intercepting wind blades gradually increases from a direction close to the center of the separation disk to a direction away from the center of the center disk;

[0042] The protruding height of the first collision structure is less than or equal to one sixth of the maximum value of the gap, and the protruding height of the first collision flow structure is less than or equal to three quarters of the thickness of the intercepting wind blade itself;

[0043] The concave depth of the first collision structure is greater than or equal to one sixth of the maximum value of the gap, and the concave depth of the first collision flow structure is less than or equal to one third of the thickness of the intercepting wind blade itself.

[0044] As an optional embodiment, in an embodiment of the second aspect of the present invention, the first side surface of the first blade part intersects with the third side surface of the second blade part to form a first angle α, 30°≤α≤150°, and the first blade part and / or the second blade part are provided with the first collision structure.

[0045] As an optional implementation, in an embodiment of the second aspect of the present invention, the fixed disk is provided with a circumferential groove and an annular groove, the circumferential groove is provided along the circumference of the fixed disk and opens outward, the annular groove is provided in the fixed disk and communicates with the circumferential groove, and an angle between an opening direction of the circumferential groove and an opening direction of the annular groove is a right angle, an acute angle or an obtuse angle;

[0046] Of the two ends of the intercepting wind blade, the end close to the center of the separation disk is the first end, and the end away from the center of the separation disk is the second end;

[0047] The first end of the intercepting wind blade is provided with a blade root portion, and the blade root portion includes a flat clamping portion and an insertion portion extending outward from the clamping portion, the insertion portion is used to be inserted into the circumferential groove, and the clamping portion is used to be clamped to the annular groove.

[0048] As an optional implementation, in an embodiment of the second aspect of the present invention, the intercepting wind blade includes a first blade portion and a second blade portion in an elongated shape, and a first side surface of the first blade portion intersects with a third side surface of the second blade portion, so that a cross section of the intercepting wind blade is a V-shaped cross section;

[0049] A first transition surface extending along the length direction of the intercepting wind blade is provided at the inner side of the V-shaped cross section where the first blade part and the second blade part are connected to the blade root, and a second transition surface extending along the length direction of the intercepting wind blade is provided at the outer side of the V-shaped cross section where the first blade part and the second blade part are connected to the blade root;

[0050] For two adjacent intercepting blades, the inner side of one of the intercepting blades is opposite to the other intercepting blade, and the first transition surface of the one intercepting blade matches the second transition surface of the other intercepting blade.

[0051] As an optional embodiment, in an embodiment of the second aspect of the present invention, the projection length of the transition plane on the plane where the first side surface of the first blade part and the third side surface of the second blade part meet is less than or equal to one-ninth of the projection length of the first blade part and the second blade part on the plane where the first side surface of the first blade part and the third side surface of the second blade part meet.

[0052] As an optional embodiment, in an embodiment of the second aspect of the present invention, the blade root includes an inclined surface, and the blade root is provided with a protrusion, the protrusion is arranged on the inclined surface or the opposite surface of the inclined surface, and the protrusion is used to make the blade roots of two adjacent intercepting wind blades have a gap smaller than the gap, and the gap is used to fill the adhesive to bond the blade roots of the two adjacent intercepting wind blades together.

[0053] As an optional implementation, in an embodiment of the second aspect of the present invention, the gap is less than or equal to one tenth of the gap formed between two adjacent intercepting blades.

[0054] As an optional embodiment, in an embodiment of the second aspect of the present invention, a second collision structure is provided at the intersection of the first side surface of the first blade part and the third side surface of the second blade part, and the second collision structure is provided on the outer side of the intercepting wind blade, and the second collision structure is used to increase the number of collisions between the oil smoke and the intercepting wind blade.

[0055] As an optional implementation, in an embodiment of the second aspect of the present invention, it is characterized in that the separation disk is a single-layer separation disk formed by a single layer of the plurality of intercepting wind blades radially installed on the fixed disk; or

[0056] The separation disk is a multi-layer separation disk formed by installing the plurality of intercepting wind blades in multiple layers on the fixed disk.

[0057] As an optional embodiment, in an embodiment of the second aspect of the present invention, the separation disk is a multi-layer separation disk, including a first layer of intercepting wind blades and a second layer of intercepting wind blades, and the angle of the first layer of intercepting wind blades and the angle of the second layer of intercepting wind blades are in the same or opposite directions.

[0058] A second aspect of an embodiment of the present invention provides an oil fume purification device, which includes a driving device and a separation disk as described in any one of claims 13 to 37, and the driving device is used to drive the fixed disk to rotate so that the fixed disk drives the multiple intercepting wind blades to rotate.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] A separation plate and an oil fume purification device provided in an embodiment of the present invention enhance the roughness of the inner and outer surfaces of the intercepting blades by adding a first collision structure to the V-shaped intercepting blades, so that when the oil fume passes through the rotating intercepting blades, not only can the oil fume obtain more collisions when passing between two adjacent intercepting blades, but also as much grease, solid particles and other substances in the oil fume as possible can be collided and adhered to the intercepting blades, and at the same time, the time between the passage of grease, solid particles and other substances through the intercepting blades can be prolonged, thereby increasing the radial movement time of grease, solid particles and other substances using centrifugal force, increasing the oil removal rate of the oil fume separator, and allowing the oil droplets in the oil fume to be completely separated and thrown out, thereby ensuring the oil fume purification efficiency and effect of the oil fume separator, and reducing harm to the health of cooking personnel and pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 This is a schematic diagram of the structure of the oil smoke intercepting fan blade provided in the first embodiment of the present invention;

[0063] Figure 2 1 is a schematic structural diagram of a cross section of an oil smoke intercepting fan blade (the blade root is not shown) provided in Embodiment 1 of the present invention;

[0064] Figure 3 is a schematic structural diagram of a first blade part and a second blade part provided in Embodiment 1 of the present invention;

[0065] Figure 4is a schematic structural diagram of a first collision structure provided by Embodiment 1 of the present invention, which is a convex structure and a concave structure;

[0066] Figure 5 yes Figure 2 A schematic structural diagram of a cross section of an oil smoke intercepting fan blade (the blade root is not shown) provided with a first collision structure;

[0067] Figure 6 A schematic diagram of the structure of the first collision structure provided in the first embodiment of the present invention arranged at different positions of the intercepting wind blade;

[0068] Figure 7 A schematic diagram of the structure of a blade root provided by Embodiment 1 of the present invention;

[0069] Figure 8 yes Figure 1 A schematic diagram of the structure from another perspective;

[0070] Fig. 9 yes Figure 8 A schematic diagram of the structure from another perspective;

[0071] Fig.10 is a schematic structural diagram of a separation disk provided in Embodiment 2 of the present invention;

[0072] Fig.11 The convex structure provided in the second embodiment of the present invention is a schematic diagram of a structure in which the convex structure is a sawtooth convexity, a convex point and is formed by frosting on the surface of the intercepting wind blade;

[0073] Fig.12 It is a schematic diagram of the structure in which the first collision structure provided by the second embodiment of the present invention is a discontinuous sawtooth-shaped protrusion and a continuous sawtooth-shaped protrusion;

[0074] Fig.13 is a schematic diagram of a structure in which the first collision structure provided by the second embodiment of the present invention is a discontinuous convex point and a continuous convex point;

[0075] Fig.14 The second embodiment of the present invention provides Figure 7 It is a structural schematic diagram of the first collision structure provided in the first embodiment of the present invention when intercepting wind blades with uniform density and uneven density;

[0076] Fig.15 is a schematic structural diagram of two adjacent intercepting wind blades connected together in which the first collision structure provided by the second embodiment of the present invention is a convex structure;

[0077] Fig.16 is a structural schematic diagram of two adjacent intercepting wind blades connected together in which the first collision structure provided by the second embodiment of the present invention is a concave structure;

[0078] Fig.17Schematic diagram of the structure of the fixed plate (when separated) provided in the second embodiment of the present invention;

[0079] Fig.18 Schematic diagram of the structure of the fixed disk (when connected together) provided in the second embodiment of the present invention;

[0080] Fig.19 This is a schematic structural diagram of the two-layer intercepting wind blades of the two-layer separation disk provided in the second embodiment of the present invention, wherein the angle direction is the same;

[0081] Fig. 20 This is a schematic structural diagram of the two-layer separation disk provided by the second embodiment of the present invention, in which the angles of the two-layer intercepting blades are opposite to each other;

[0082] Fig.21 A schematic structural diagram of an oil fume purification device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0083] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0084] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0085] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0086] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0088] The embodiment of the present invention discloses an oil fume intercepting fan blade, a separation plate and an oil fume purification device, which can increase the oil removal rate of the oil fume purification device so that the separated exhaust gas basically no longer contains oil droplets, thereby ensuring the oil fume purification efficiency and effect of the oil fume separation device and reducing harm to the health of cooking personnel and pollution to the environment.

[0089] The technical solution of the present invention will be further described below in conjunction with embodiments and drawings.

[0090] Embodiment 1

[0091] Please also read Figures 1 to 4 The first embodiment of the present invention discloses an oil smoke intercepting blade. The intercepting blade 20 is in the shape of an elongated strip. A first collision structure 30 is provided on the surface of the intercepting blade 20 for causing the oil smoke airflow to collide with the intercepting blade 20 when passing through the intercepting blade 20 .

[0092] Among them, since the intercepting wind blade 20 is in the shape of a long strip, taking a rectangular block as an example, the surface of the intercepting wind blade 20 is all the surfaces of the intercepting wind blade 30, such as the end surfaces at both ends in the length direction, the side surfaces on both sides in the width direction, and the front and back faces connected between the end surfaces and the side surfaces.

[0093] Among them, the interception fan blade 20 refers to a long sheet structure that can be installed on the fixed plate of the oil fume separation plate, and when the fixed plate rotates under the drive of an external force, it rotates along with the rotation of the fixed plate, thereby intercepting and separating the grease and / or solid mixture in the oil fume. Preferably, the interception fan blade 20 is a flat long strip structure. The purpose of using the interception fan blade 20 with a flat long strip structure is: because the interception fan blade 20 needs to rotate at a high speed to intercept the oil fume airflow, therefore, if the thickness of the interception fan blade 20 is too large, it may affect the rotation speed of the interception fan blade, which may affect the effect of the interception fan blade in intercepting the oil fume airflow. Therefore, the interception fan blade 20 of the present invention preferably adopts a flat long strip structure.

[0094] It should be known that when the intercepting fan blades 20 are installed on the fixed plate of the oil fume separation plate, in order to improve the oil fume separation efficiency, the number of intercepting fan blades 20 should be multiple, specifically 100 to 300, and a gap should be formed between two adjacent intercepting fan blades 20 so that the oil fume airflow can pass into the gap and contact the intercepting fan blades 20, thereby achieving the purpose of oil fume separation.

[0095] When the intercepting blades 20 are installed on the oil fume separation disk and the separation disk rotates at a certain speed, the oil fume airflow enters the separation disk from one side of the separation disk. When the oil fume airflow passes through the gap between adjacent intercepting blades 20, the grease, particles, etc. in the oil fume will collide with the side surfaces of the intercepting blades 20 on both sides of the gap between the intercepting blades 20 and be adsorbed on the side surfaces of the intercepting blades 20, and be thrown out in the radial direction of the intercepting blades 20 to achieve the oil fume separation effect. In order to provide the power for the oil fume airflow to pass through the separation disk, a negative pressure fan can be provided to provide the power for sucking the oil fume, or the power for sucking the oil fume can be provided by the separation disk itself.

[0096] In the present patent, due to the presence of the first collision structure 30 on the intercepting blade 20, when the oil fume airflow passes through the gap of the intercepting blade 20 of the separation disk, compared with the blade without the first collision structure 30, the oil fume airflow will be more turbulent and form or intensify turbulence / eddy current, thereby increasing the probability of contact between the grease, particulate matter, etc. in the oil fume and the intercepting blade 20, that is, increasing the probability of collision between the oil fume airflow and the intercepting blade and increasing the time for the oil fume airflow to pass through the separation disk to a certain extent, thereby reducing the probability of the grease, particulate matter, etc. in the oil fume passing directly through the gap of the intercepting blade 20 without being intercepted, thereby improving the intercepting blade 20's ability to collide and adsorb grease and particulate matter in the oil fume, thereby maximizing the oil fume separation effect. The first collision structure 30 on the intercepting wind blade 20 can adopt one or more minimum first collision structure units with collision effect, and the first collision structure 30 can be set on various surfaces of the intercepting wind blade 20 and adopt any structure, such as being set on the side, end, top or bottom surface of the intercepting wind blade 20, and any possible structure that can enhance the turbulence effect and increase the collision probability when the oil smoke airflow passes through the gap of the intercepting wind blade 20 falls within the protection scope of this patent.

[0097] In the prior art, the blades of fluid equipment are as flat as possible so that working media such as gas and liquid can pass through the blades in the shortest time instead of prolonging the time it takes to pass through the blades. Even the blades of some fluid machinery have strict restrictions on the roughness of their surfaces to ensure that gas, liquid, etc. can pass through the blades quickly. Therefore, providing a first collision structure 30 on the surface of the blade to increase the probability of contact between the oil smoke airflow and the interception blade 20 and prolong the time it takes to pass through the blade is not only not common knowledge in the art, but even a technical means that violates common knowledge in the art.

[0098] It should be known that the first collision structure 30 of the present invention refers to: when the oil smoke passes through the intercepting blade 20, the first collision structure 30 can increase the surface roughness of the intercepting blade 20 to increase the collision probability of the oil smoke airflow and the intercepting blade 20. For example, it can be a convex structure such as a convex strip, a convex point, a convex column, etc., which is arranged on the intercepting blade 20. Figure 4As shown in part a of FIG. 1 ), or it may be a concave pit, groove or other concave structure provided on the intercepting blade 20 (such as Figure 4 (as shown in part b of FIG.

[0099] In this embodiment, the cross section of the intercepting blade 20 has one or more bends, one side of the cross section is the inner side of the intercepting blade 20, and the other side of the cross section is the outer side of the intercepting blade 20. The surface of the inner side of the cross section of the intercepting blade 20 and / or the outer side of the cross section of the intercepting blade 20 may be provided with the first collision structure 30. Specifically, since the intercepting blade 20 is in the shape of a long strip, the cross section is a cross section perpendicular to the length direction of the intercepting blade 20, and the cross section may be any shape with bends, such as V-shaped, W-shaped, polygonal, N-shaped or Z-shaped. For example, when the cross section is V-shaped, it has a single bend; when the cross section is W-shaped, it has three bends; when the cross section is a polygon, such as a parallelogram, rhombus, square, rectangle, pentagon, hexagon, octagon, etc., it has at least four bends; when the cross section is Z-shaped, it has two bends, and similarly, when the cross section is N-shaped, it also has two bends.

[0100] Generally, since bending usually forms an angle, the inner side of the cross section is usually one side of the angle space forming the angle, and the outer side of the cross section is the side opposite to the inner side.

[0101] It can be known that when the first collision structure 30 is set on the intercepting wind blade 20, the first collision structure 30 can be set on the inner surface of the cross-section of the intercepting wind blade 20, or the first collision structure 30 can be set on the outer surface of the cross-section of the intercepting wind blade 20, or the first collision structure 30 can be set on both the inner surface and the outer surface of the cross-section of the intercepting wind blade 20.

[0102] In this embodiment, the intercepting wind blade 20 includes a flat and long first blade portion 21 and a second blade portion 22, and the first side surface 210 of the first blade portion 21 is connected to the third side surface 220 of the second blade portion 22, so that the cross-section of the intercepting wind blade 20 is a V-shaped cross-section, and the concave side of the V-shaped cross-section is the inner side of the intercepting wind blade 20, and the other side corresponding to the concave side of the V-shaped cross-section is the outer side of the intercepting wind blade 20. Specifically, the first side surface 210 of the first blade portion 21 and the third side surface 220 of the second blade portion 22 substantially overlap, thereby forming the V-shaped cross section, while the second side surface 211 of the first blade portion 21 is away from the first side surface 210, and the third side surface 220 of the second blade portion 22 is away from the fourth side surface 221. The surface of the first blade portion 21 is formed between the first side surface 210 and the second side surface 211, and the surface of the second blade portion 22 is formed between the third side surface 220 and the fourth side surface 221. As can be seen from the above, the first collision structure 30 can be provided on the inner side and / or outer side of the V-shaped cross section.

[0103] Among them, the first side surface 210 and the second side surface 211 are the two sides of the width direction of the first blade part 21, the third side surface 220 and the fourth side surface 221 are the two sides of the width direction of the second blade part 22, and when the first side surface 210 is connected to the third side surface 220, the first side surface 210 and the third side surface 220 are completely overlapped.

[0104] It can be known that the first collision structure 30 is provided on the second side surface 211 and / or the fourth side surface 221, and there are the following situations:

[0105] ① The first collision structure 30 is provided on the second side surface 211 and the fourth side surface 221;

[0106] ② The first collision structure 30 is disposed on the second side surface 211 but not on the fourth side surface 221;

[0107] ③ The first collision structure 30 is disposed on the fourth side surface 221 but not on the second side surface 211 .

[0108] From the above, it can be seen that the inner side of the V-shape refers to the side of the V-shape forming an angle space, while the outer side of the V-shape is the side opposite to the inner side (such as Figure 2 shown).

[0109] Further, the first collision structure 30 is provided on the surface of the first blade part 21 and the surface of the second blade part 22. Specifically, the first blade part 21 and the second blade part 22 are both long flat sheet-like parts.

[0110] Taking the first collision structure 30 being disposed on the inner side of the V-shape as an example, the position of the first collision structure 30 on the intercepting blade 20 can be in the following ways:

[0111] ① The first collision structure 30 is provided on the surface of the first blade part 21 and the surface of the second blade part 22 (eg Figure 5 As shown in part a of FIG);

[0112] ② The first collision structure 30 is provided on the surface of the first blade portion 21 (eg Figure 5 as shown in part b of the figure);

[0113] ③ The first collision structure 30 is provided on the surface of the second blade portion 22 (eg Figure 5 (as shown in part b of Figure 1).

[0114] The first collision structure 30 covers the intercepting blade 20 in the following ways:

[0115] ① The projection area of ​​the first collision structure 30 on the surface of the first blade part 21 is smaller than the surface area of ​​the first blade part 21 (eg Figure 6 (as shown in parts a, b, c, and d in the figure).

[0116] ② The projection area of ​​the first collision structure 30 on the surface of the first blade part 21 is equal to the surface area of ​​the first blade part 21 (eg Figure 6 (as shown in part a of Figure 1).

[0117] ③ The projection area of ​​the first collision structure 30 on the surface of the second blade portion 22 is smaller than the surface area of ​​the second blade portion 22 (eg Figure 6 b, c, and d in the figure).

[0118] ④ The projection area of ​​the first collision structure 30 on the surface of the second blade portion 22 is equal to the surface area of ​​the second blade portion 22 (eg Figure 6 (as shown in part a of Figure 1).

[0119] It can be understood that when the first collision structure 30 is disposed on the outer side of the V-shape and when the first collision structure 30 is disposed on the inner side of the V-shape, the position and coverage of the first collision structure 30 on the intercepting blade 20 are the same.

[0120] In the first embodiment of the present invention, the first collision structure 30 is preferably located at the inner side of the V-shape and is provided on the surface of the first blade part 21 and the surface of the second blade part 22 as an example.

[0121] Specifically, when the intercepting blade 20 is installed on the fixed plate, the second blade part 22 of the intercepting blade 20 is usually located above the first blade part 21, and when the oil smoke enters the intercepting blade 20, it usually enters from bottom to top, that is, when the oil smoke passes through the intercepting blade 20, it first contacts the first blade part 21. Therefore, the first blade part 21 is close to the position where the oil smoke enters the gap between two adjacent intercepting blades 20, so the first collision structure 30 can be preferably arranged on the surface of the second blade part 22, so that when the oil smoke is about to be discharged through the second blade part 22, due to the action of the first collision structure 30 on the second blade part 22, the speed of the oil smoke passing through the second blade part 22 is slowed down, thereby extending the separation time of the oil smoke in the gap, and further making the separation of the oil smoke more thorough.

[0122] It should be known that the first collision structure 30 can be integrally formed on the surface of the first blade part 21 and the surface of the second blade part 22, and the projection area of ​​the first collision structure 30 on the inner surface of the intercepting blade 20 is equal to the surface area of ​​the intercepting blade 20, thereby simplifying the processing procedures of the intercepting blade 20 and improving the processing efficiency. At the same time, the method of integrally forming and the projection area of ​​the first collision structure 30 on the inner surface of the intercepting blade 20 being equal to the surface area of ​​the intercepting blade 20 can also avoid the first collision structure 30 adopting a split design and the possibility of gaps or additional parts, thereby causing oil droplets to accumulate in the gaps or additional parts, which is not conducive to the cleaning of the intercepting blade 20.

[0123] In the present embodiment, since the intercepting blade 20 is a long strip-shaped component, the two ends of the intercepting blade 20 are respectively the first end and the second end, and the first end and the second end are respectively the two ends in the length direction of the intercepting blade 20, and the first collision structure 30 can be a long strip-shaped protrusion, a groove or a combination of the two, and the first collision structure 30 extends from the first end to the second end, or the length direction of the first collision structure 30 extends along the length direction of the intercepting blade 20, and the length of the first collision structure 30 is less than the length of the intercepting blade 20. Specifically, when the intercepting blade is applied to the oil fume separation disk and installed to the fixing disk of the oil fume separation disk, the first end of the intercepting blade 20 is preferably an end close to the center of the oil fume separation disk, and the second end of the intercepting blade is an end relatively far away from the center of the oil fume separation disk.

[0124] As an optional embodiment, the first collision structure 30 is a long strip-shaped convex strip, and the first collision structure 30 can extend from the first end to the second end, that is, the first collision structure 30 is equal in length to the interception blade 20. In this way, when the interception blade 20 is used to intercept the oil fume airflow, the entire intersection of the interception blade 20 can form turbulence due to the action of the first collision structure 30, thereby increasing the collision probability between the oil fume airflow and the interception blade 20.

[0125] As another optional embodiment, the first collision structure 30 is also a long strip-shaped convex strip, but the length of the first collision structure 30 is less than the length of the intercepting blade 20. For example, the convex strip is only set at a position close to the first end of the intercepting blade 20, or is set from the first end to a position almost in the middle, or is only set at a position close to the second end, or is set from the second end to a position almost in the middle, or is set at a position between the first end and the second end, etc. This method is mainly adopted because: when the intercepting blade 20 is used in the oil fume separation plate to intercept oil fume, the number of intercepting blades 20 is large. When multiple intercepting blades 20 are installed, the second end of the intercepting blade 20 is usually the first to contact the oil fume airflow, while the first end is less in contact with the oil fume airflow. Therefore, if the long strip-shaped convex strip is set at a position close to the second end, or is set from the second end to a position almost in the middle, the oil fume airflow can be turbulent when passing through these positions, slowing down the speed of the oil fume airflow passing through these positions, so that as much grease and particles as possible can be separated.

[0126] Similarly, if the first collision structure 30 is a long strip-shaped groove, its arrangement on the intercepting blade 20 can be the same as the arrangement of the long strip-shaped protrusion described above, so it will not be described in detail.

[0127] Similarly, if the first collision structure 30 is a combination of long strip protrusions and grooves, for example, part of it is set as protrusions and part of it is set as grooves, its setting method can also be the same as the above-mentioned setting method of the long strip protrusions, which will not be repeated here.

[0128] Furthermore, when the first collision structure 30 is a long strip-shaped protrusion, the height of the long strip-shaped protrusion near the first end is less than or equal to the height of the long strip-shaped protrusion near the second end. Specifically, if the height of the long strip-shaped protrusion near the first end is equal to its height near the second end, it means that the height of the long strip-shaped protrusion is uniformly set. If the height of the long strip-shaped protrusion near the first end is less than its height near the second end, it means that the height of the long strip-shaped protrusion can gradually increase from the first end to the second end, or the height of the long strip-shaped protrusion near the first end is relatively small, the height of the long strip-shaped protrusion near the middle is relatively large, and the height of the protrusion near the second end is also relatively small, but it should be ensured that the height of the protrusion near the second end should be greater than the height of the protrusion near the first end. Such a design is adopted mainly because: when the interception blades 20 are applied to the oil fume separation plate for oil fume interception, the number of interception blades 20 is large, and a gap is formed between two adjacent interception blades 20 for the oil fume airflow to pass through, so that the oil fume airflow can contact the interception blades and the first collision structure 30 on the interception blades 20. Since the gap gradually increases from the first end to the second end, if the protrusion height of the long strip protrusion at the first end is too high, it may cause the gap between the two adjacent interception blades 20 at the position of the first end to be smaller, which is not conducive to the installation of the two adjacent interception blades 20. In addition, it can be known from the above that when the oil fume airflow enters the gap, the second end and the middle position are first contacted. Therefore, the protrusion height of the long strip protrusion at the second end and the middle position can be slightly larger than the protrusion height at the first end, which can not only reduce the width of the gap so that the oil fume airflow will not pass through the gap all at once, but also slow down the speed of the oil fume airflow passing through these positions as much as possible, thereby improving the oil fume separation effect.

[0129] Similarly, when the first collision structure 30 is a long strip groove, the depth of the long strip groove near the first end is less than or equal to the depth of the long strip groove near the second end. Specifically, the depth of the long strip groove near the first end is less than the depth of the long strip groove near the second end. This is because when the interception fan blade 20 is applied to the oil fume separation plate to intercept oil fume, it is mainly through installing the first end of the interception fan blade 20 to the oil fume separation plate. If the depth of the long strip groove near the first end is large, it is easy to cause the structural strength of the interception fan blade 20 at the first end to be insufficient. In this way, during high-speed rotation, the interception fan blade 20 may break. Therefore, it is preferred that the depth of the long strip groove near the second end is greater than the depth near the first end.

[0130] In this embodiment, when the first collision structure is a convex column, a concave pit, or a combination of the two, the intercepting blade 20 may be provided with a plurality of first collision structures 30, and the plurality of first collision structures 30 are arranged and distributed in the width direction of the intercepting blade 20, and two adjacent first collision structures 30 are closely fitted or have a gap. Specifically, among the plurality of first collision structures 30, the spacing between two adjacent first collision structures 30 near the first end is greater than the spacing between two adjacent first collision structures near the second end.

[0131] Taking the convex column as an example, among the multiple convex columns, the definition that the multiple first collision structures 30 are closely fitted to the adjacent two first collision structures 30 in the width direction of the intercepting wind blade 20 means that the multiple first collision structures 30 are arranged continuously in the width direction of the intercepting wind blade 20. And the multiple first collision structures 30 have gaps between the adjacent two first collision structures 30 in the width direction of the intercepting wind blade 20. This arrangement can be roughly as follows: the multiple convex columns are arranged from sparse to dense from the first end to the second end, or the multiple convex columns can be sparsely arranged from the first end to the middle, then evenly arranged in the middle position, and finally densely arranged from the middle position to the second end, etc. In other words, when multiple convex columns are set, there can be multiple ways of uneven arrangement, and these multiple arrangement methods can be adjusted according to actual conditions.

[0132] The above arrangement is adopted mainly because: when the intercepting fan blade 20 is applied to the oil fume separation plate to intercept oil fume, the oil fume airflow first contacts the second end and the middle position. Therefore, the arrangement of the convex columns at the second end and the middle position can be slightly denser than the arrangement at the first end, which can slow down the speed of the oil fume airflow passing through the second end and the middle position as much as possible, thereby improving the oil fume separation effect.

[0133] Similarly, when the first collision structure 30 is a concave pit, its arrangement method can also be the same as the arrangement method of the convex column, so it will not be described in detail.

[0134] In this embodiment, when the first collision structure is a convex column, a concave pit or a combination of the two, the intercepting wind blade 20 may be provided with a plurality of first collision structures 30, and the plurality of first collision structures 30 are arranged continuously from the first end to the second end, or the plurality of the first collision structures 30 are arranged close to the first end or the second end.

[0135] Taking the convex column as an example, among the plurality of convex columns, the plurality of the first collision structures 30 are arranged near the first end or the second end. This arrangement can be roughly as follows: the plurality of convex columns are arranged near the first end, while the plurality of convex columns are not arranged near the second end (e.g. Figure 6 Alternatively, the plurality of protrusions are arranged near the second end and the plurality of protrusions are not arranged near the first end (as shown in part b of FIG. Figure 6d), or the plurality of bosses are arranged in the middle of the first end and the second end as shown in Figure 6 As shown in part c of the figure, etc. That is to say, when a plurality of bosses are provided, the positions where the bosses are provided may be different, and the different positions where the bosses are provided may be adjusted according to the actual situation.

[0136] The present patent preferably sets the plurality of the first collision structures 30 close to the second end, mainly because: when the interception blade 20 is applied to the oil fume separation plate to intercept oil fume, the oil fume airflow first contacts the second end position. Therefore, setting the plurality of the first collision structures 30 close to the second end can slow down the speed of the oil fume airflow passing through the second end position as much as possible, thereby improving the oil fume separation effect.

[0137] Similarly, when the first collision structure 30 is a concave pit, its arrangement method can also be the same as the arrangement method of the convex column, so it will not be described in detail.

[0138] like Figure 5 As shown, in this embodiment, the first blade portion 21 and the second blade portion 22 are of equal length, and because the cross-section of the intercepting wind blade 20 is V-shaped, the second blade portion 22 intersects with the first blade portion 21 to form a first angle α, 30°≤α≤150°, preferably, the first angle α can be 30°, 45°, 60°, 90°, 120°, 150°, etc.

[0139] Since the second blade portion 22 intersects with the first blade portion 21 to form the first angle α, the speed of the oil fume will slow down at the position of the first angle α when passing through the intercepting fan blade 20. According to Bernoulli's principle, the smaller the speed, the greater the pressure. Therefore, a small range of pressure difference will be generated at the position of the first angle α of the intercepting fan blade 20, resulting in reverse reflux. However, since the suction force generated after the separation disk rotates is dominant, the oil fume continues to flow in the mainstream direction. The oil fume in the mainstream direction and the oil fume returning in the opposite direction contact each other to generate a vortex, that is, after the oil fume passes through the position of the first angle α of the intercepting fan blade 20, a local vortex is generated. The oil mist collides violently in the vortex and gathers into oil droplets. The vortex also generates heat due to material friction, resulting in energy exhaustion. The vortex disappears, and the oil droplets and other impurities in the vortex are finally thrown out of the separation disk at a higher tangential speed under the action of the centrifugal force generated by the rotation of the separation disk, while the exhaust gas directly flows outside the center disk and is discharged to the outside through the exhaust device, thereby further improving the oil fume purification effect.

[0140] Since the intercepting blade 20 is applied to the oil fume separation plate to intercept and separate the oil fume, in practical applications, the intercepting blade 20 is usually installed on the fixed plate of the oil fume separation plate. Specifically, the fixed connection method between the intercepting blade 20 and the fixed plate of the oil fume separation plate can be: welding, riveting, bolt and screw connection, snap connection, pin connection, elastic deformation connection, lock connection or plug-in, etc. Taking riveting as an example, if the intercepting blade 20 is riveted to the fixed plate, the first end of the first blade part 21 and / or the second blade part 22 can be riveted to the fixed plate, or the second end of the first blade part 21 and / or the second blade part 22 can be riveted to the fixed plate, and of course, the first end and the second end of the first blade part 21 and the second blade part 22 can also be riveted and fixed to the fixed plate at the same time.

[0141] Furthermore, if Figure 7 As shown, in order to facilitate the installation and connection between the intercepting fan blade 20 and the oil fume separation disk, a blade root 25 may be provided on one end of the intercepting fan blade 20, and the thickness of the blade root 25 gradually decreases from the end close to the intercepting fan blade 20 to the end away from the intercepting fan blade 20, wherein the one end of the intercepting fan blade here refers to the first end of the intercepting fan blade 20. The blade root 25 includes an insertion portion 252 extending outward from the first end and a clamping portion 251 extending downward from the insertion portion, and the insertion portion 252 and the clamping portion 251 are respectively used to be installed to the fixed disk of the oil fume separation disk, so that the intercepting fan blade 20 is fixed to the fixed disk. Specifically, the blade root 25 is a short strip-shaped sheet, and the length of the blade root 25 can be 1:10 to 1:15. Preferably, the length ratio of the blade root 25 to the intercepting wind blade 20 may be 1:10, 1:11, 1:12, 1:13, 1:14 or 1:15, etc.

[0142] The length ratio of the blade root 25 to the intercepting blade 20 is limited in order to avoid the length ratio between the blade root 25 and the intercepting blade 20 being too large, which would result in insufficient connection strength of the blade root 25 to the intercepting blade 20, thereby causing breakage at the connection between the blade root 25 and the intercepting blade 20 during high-speed rotation.

[0143] Specifically, the blade root portion 25 may be wedge-shaped as a whole, for example, the inserting portion 252 and the clamping portion 251 are both wedge-shaped, or only the inserting portion 252 may be wedge-shaped, while the clamping portion 251 is not necessarily wedge-shaped.

[0144] In this embodiment, it is preferred that the blade root portion 25 is wedge-shaped as a whole.

[0145] The design of the insertion portion 252 as a flat wedge shape is adopted mainly because: when the intercepting fan blades 20 are installed on the fixed plate of the oil fume separation plate, in order to ensure the oil fume separation effect, the number of the intercepting fan blades 20 installed on the fixed plate is relatively large. Since the intercepting fan blades are radially distributed and installed on the fixed plate, in order to make the insertion portions 252 of adjacent intercepting fan blades 20 tightly connected to the fixed plate, the insertion portion should preferably be wedge-shaped, which is not only conducive to the installation and connection of the two adjacent intercepting fan blades, but also can avoid the breakage of the blade root due to insufficient strength during high-speed rotation.

[0146] Specifically, the inclination angle of the inserting portion 252 may be θ, wherein 1°≤θ≤4°. For example, θ may be 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, etc. The inclination angle cannot be too large. If it is too large, it will be disadvantageous for the fitting of the blade roots 25 of two adjacent intercepting blades 20, thereby affecting the size of the gap formed by the two adjacent intercepting blades 20. If the inclination angle is too small, the thickness of the end of the inserting portion is small, which may cause the blade roots 25 to have insufficient strength and may break during high-speed rotation. Therefore, the inclination angle should be roughly maintained at a value of 1°≤θ≤4°.

[0147] In this embodiment, since the intercepting blades 20 need to be installed on a fixed plate when actually used, and in order to improve the oil fume separation efficiency, the number of the intercepting blades 20 is relatively large. The clamping portion has an inclined surface 253, and taking the inclined surface 253 as an example of a side facing the V-shaped inner side of the intercepting blade 20, in order to further facilitate the fitting connection of two adjacent intercepting blades 20, a protrusion 253a may be provided on the inclined surface 253, and the protrusion 253a is used to make the blade roots 25 of the two adjacent intercepting blades 20 have a gap smaller than the minimum value of the gap when connected, and the gap can be filled with adhesive (not shown), so that the blade roots 25 of the two adjacent intercepting blades 20 can be bonded together. Specifically, the protrusion 253a can be set at the center of the inclined surface 253, and the protruding height of the protrusion 253a should be less than one-ninth of the thickness of the blade root 25 itself, so that the size of the gap formed between the blade roots 25 of the two adjacent intercepting blades 20 can be controlled.

[0148] The size of the gap is limited mainly to avoid the problem that the gap between two adjacent intercepting blades 20 is too large due to the gap being too large, thereby affecting the separation effect of the oil smoke, and at the same time, it can also reduce the use of adhesive, thereby avoiding waste. If the gap is too small, there will be too little adhesive between the blade roots 25 of the two adjacent gaps, and it will be difficult for the adhesive to play its role, resulting in the blade roots 25 of the two adjacent gaps being unable to be fastened and bonded together.

[0149] In addition, filling the gap with adhesive can not only fix the root portions 25 of the two adjacent intercepting fan blades 20, but also utilize the airtight property of the adhesive to prevent the oil smoke from being directly discharged from the root portions 25 of the two adjacent intercepting fan blades 20, so that the oil smoke can only be discharged after being gathered at the second end of the intercepting fan blade and separated, thereby further effectively improving the separation effect of the oil smoke.

[0150] In this embodiment, in order to make the connection between the blade roots 25 of two adjacent intercepting blades 20 tighter, a first transition plane 241 and a second transition surface 242 are formed at the connection between the clamping portion 251 of the blade root 25 and the intersection, that is, a first transition surface 241 and a second transition surface 242 are provided at the intersection of the first side surface 210 and the third side surface 220. Specifically, the first transition surface 241 is located on the inner side of the intercepting blade 20, and the second transition surface 242 is located on the outer side of the intercepting blade 20. Preferably, the first transition surface 241 and the second transition surface 242 can both be planes, so that when two adjacent intercepting blades 20 are connected, at the positions of the first transition surface 241 and the second transition surface 242, the fit between the two intercepting blades 20 is higher, thereby avoiding the formation of a gap at the positions of the first transition surface 241 and the second transition surface 242.

[0151] The oil fume intercepting blade provided in the first embodiment of the present invention adopts an intercepting blade with a V-shaped cross-section, and sets a first collision structure on the outer side of the V-shape of the intercepting blade and on the surface of the first blade part and the surface of the second blade part, so that the oil fume continuously rotates at the position where it passes through the first collision structure to form turbulence, thereby gathering a large amount of oil fume and increasing the probability of the oil fume colliding at the first collision structure, so that more oil droplets are separated and the separation effect is better.

[0152] Embodiment 2

[0153] Please also read Figures 10 to 13 , Embodiment 2 of the present invention provides a separation plate, which is used to be installed on a rotating shaft to intercept and separate grease and / or solid mixtures in oil smoke. The separation plate includes a fixed plate 10 and a plurality of elongated oil smoke interception blades 20. The plurality of interception blades 20 are radially distributed and fixed to the fixed plate 10, and one end of the plurality of interception blades 20 is fixedly connected to the fixed plate 10. A gap through which oil smoke can pass is formed between two adjacent interception blades 20. All or part of the interception blades are elongated, and a first collision structure 30 is provided on the surface of the interception blade 20 for increasing the surface roughness of the interception blade 20 to increase the probability of collision between the oil smoke airflow and the interception blade 20.

[0154] The method of adding a first collision structure 30 to the intercepting blade 1 is adopted to enhance the inner and outer surface roughness of the intercepting blade 20, so that when the oil smoke passes through the rotating intercepting blade 20, not only can the oil smoke obtain more collisions when passing between two adjacent intercepting blades 20, but also as much grease, solid particles and other substances in the oil smoke as possible can be collided and adhered to the intercepting blade 20, but also the time for grease, solid particles and other substances to pass through the gap between two adjacent intercepting blades 20 can be extended, thereby increasing the radial movement time of grease, solid particles and other substances generated by centrifugal force, increasing the oil removal rate, and allowing the oil droplets in the oil smoke to be completely separated and thrown out, thereby ensuring the efficiency and effect of oil fume purification and reducing the harm to the health of cooking personnel and the pollution to the environment.

[0155] It should be known that in order to ensure the separation effect of oil smoke, the number of the interception blades 20 should be large, so that the gap between two adjacent interception blades 20 is not too large. Preferably, the number of the interception blades 20 can be 100 to 200. More preferably, the number of the interception blades 20 is 130, 140, 150, 160, 180, etc.

[0156] Among them, the multiple long oil fume intercepting blades 20 are radially distributed and fixed to the fixed plate 2, which means that when the intercepting blades 20 are installed on the fixed plate 10, they are installed in a plane along the radial direction of the fixed plate, that is, the length direction of the intercepting blades 20 is consistent with the radial direction of the fixed plate. In this way, the oil fume can be separated by the intercepting blades 20 and then thrown out along the end of the length direction of the intercepting blades 20.

[0157] Specifically, when the intercepting blades 20 are installed on the oil fume separation disk and the separation disk rotates at a certain speed, the oil fume airflow enters the separation disk from one side of the separation disk. When the oil fume passes through the gap between adjacent intercepting blades 20, the grease, particles, etc. in the oil fume will collide with the side surfaces of the intercepting blades 20 on both sides of the gap between the intercepting blades 20 and be adsorbed on the side surfaces of the intercepting blades 20, and will be thrown out in the radial direction of the intercepting blades 20 to achieve the oil fume separation effect. In order to provide the power for the oil fume airflow to pass through the separation disk, a negative pressure fan can be provided to provide the power for sucking the oil fume, or the power for sucking the oil fume can be generated by the separation disk itself.

[0158] Among them, the interception fan blade 20 refers to a long sheet structure that can be installed on the fixed plate of the oil fume separation plate, and when the fixed plate rotates under the drive of an external force, it rotates along with the rotation of the fixed plate, thereby intercepting and separating the grease and / or solid mixture in the oil fume. Preferably, the interception fan blade 20 is a flat long strip structure. The purpose of using the interception fan blade 20 with a flat long strip structure is: because the interception fan blade 20 needs to rotate at a high speed to intercept the oil fume airflow, therefore, if the thickness of the interception fan blade 20 is too large, it may affect the rotation speed of the interception fan blade, which may affect the effect of the interception fan blade in intercepting the oil fume airflow. Therefore, the interception fan blade 20 of the present invention preferably adopts a flat long strip structure.

[0159] In the present patent, due to the presence of the first collision structure 30 on the intercepting blade 20, when the oil fume airflow passes through the gap of the intercepting blade 20 of the separation disk, compared with the blade without the first collision structure 30, the oil fume airflow will be more turbulent and form or intensify turbulence / eddy current, thereby increasing the probability of contact between the grease, particulate matter, etc. in the oil fume and the intercepting blade 20, that is, increasing the probability of collision between the oil fume airflow and the intercepting blade, and increasing the time for the oil fume airflow to pass through the separation disk to a certain extent, reducing the probability of the grease, particulate matter, etc. in the oil fume passing directly through the gap of the intercepting blade 20 without being intercepted, thereby improving the intercepting blade 20's ability to collide and adsorb grease and particulate matter in the oil fume, and maximizing the oil fume separation effect. The first collision structure 30 on the intercepting wind blade 20 can adopt one or more minimum first collision structure units with a turbulent effect, and the first collision structure 30 can be set on various surfaces of the intercepting wind blade 20 and adopt any structure, such as being set on the side, end, top or bottom surface of the intercepting wind blade 20, and any possible structure that can enhance the turbulent effect when the oil smoke airflow passes through the gap of the intercepting wind blade 20 falls within the protection scope of this patent.

[0160] In the prior art, the blades of fluid equipment are as flat as possible so that working media such as gas and liquid can pass through the blades in the shortest time instead of prolonging the time it takes to pass through the blades. Even the blades of some fluid machinery have strict restrictions on the roughness of their surfaces to ensure that gas, liquid, etc. can pass through the blades quickly. Therefore, providing a first collision structure 30 on the surface of the blade to increase the probability of contact between the oil smoke airflow and the interception blade 20 and prolong the time it takes to pass through the blade is not only not common knowledge in the art, but even a technical means that violates common knowledge in the art.

[0161] It can be understood that the first collision structure 30 of the present invention refers to: a first collision structure 30 is arranged on the interception fan blade 20, which can increase the surface roughness of the interception fan blade 20 to increase the collision probability of the oil smoke airflow and the interception fan blade 20 when the oil smoke passes through the interception fan blade 20. For example, it can be a convex structure such as a convex strip, a convex point, a convex column, etc. arranged on the interception fan blade 20, or it can be a concave structure such as a concave pit, a groove, etc. arranged on the interception fan blade 20.

[0162] Specifically, combined Figures 10 to 12 As shown, taking the first collision structure 30 as a protruding structure provided on the intercepting blade 20 as an example, the protruding structure is an intermittent or continuous sawtooth protrusion (such as Fig.11 As shown in part a of Fig.11 b) and / or formed by frosting on the surface of the separation blade 20 (as shown in FIG. Fig.11 That is, the protrusion structure can be either a discontinuous sawtooth protrusion protruding from the surface of the intercepting blade 20 (as shown in part a of FIG. 12 ) or a continuous sawtooth protrusion (as shown in part c of FIG. 12 ). Fig.12 Alternatively, the protruding structure may be a discontinuous protrusion (such as Fig.13 As shown in part b of FIG. 1 ), it can also be a continuous convex point (such as Fig.13 In addition, the protruding structure can also be formed by frosting the surface of the intercepting blade 20 (as shown in part a of FIG. Fig.11 (as shown in part c of FIG.

[0163] It should be known that if the protrusion structure is an intermittent or continuous sawtooth protrusion protruding from the surface of the intercepting wind blade 20, the cross-sectional shape of the protrusion structure along the direction perpendicular to the length extension of the intercepting wind blade 20 can be square, arc, triangle, etc.

[0164] As a first optional implementation, all intercepting blades 20 are provided with the first collision structure 30, and two adjacent intercepting blades 20 are provided with the first collision structure 30. In this case, when the oil smoke passes through the gap between the two adjacent intercepting blades 20, the design of the first collision structure 30 can extend the time the oil smoke stays in the gap, thereby allowing as much grease and / or solid mixture as possible to be separated.

[0165] As a second optional embodiment, the first collision structure 30 is provided on some of the intercepting blades 20. Specifically, at least one of the two adjacent intercepting blades 20 is provided with the first collision structure 30. In this way, when the oil smoke enters the gap formed by the two adjacent intercepting blades 20, the oil smoke can be affected by the first collision structure 30 to generate turbulence, thereby prolonging the time the oil smoke stays in the gap, and further allowing as much grease and / or solid mixture as possible to be separated.

[0166] As a third optional embodiment, for two adjacent intercepting blades 20, a gap is formed between the inner side of one intercepting blade 20 and the outer side of the other intercepting blade 20, and in all or part of the gaps of the oil fume separation plate, the inner side of one of the intercepting blades 20 and / or the outer side of the other intercepting blade 20 are provided with the first collision structure 30. Specifically, the number of intercepting blades 20 is N, and N is a natural number greater than 1, then the number of gaps formed by the intercepting blades 20 is N-1. In the present patent, the first collision structure 30 can be provided in the gap formed by each intercepting blade 20. It should be noted that the first collision structure 30 needs to be provided on the intercepting blade 20, rather than in the space of the gap. The first collision structure 30 can also be provided in the gaps of part of the intercepting blades 20, for example, the first collision structure 30 is provided at intervals of one or more gaps. For example, if one of the gaps has the first collision structure 30 , the adjacent gaps are not provided with the first collision structure 30 ; or, several adjacent gaps are provided with the first collision structure 30 , while the remaining gaps are not provided with the first collision structure 30 , and so on.

[0167] The second embodiment of the present invention is preferably described by taking the example that all intercepting blades 20 are provided with the first collision structure 30 .

[0168] According to the first embodiment of the present invention, in this embodiment, the cross section of the intercepting blade 20 has one or more bends, one side of the cross section is the inner side of the intercepting blade 20, and the other side of the cross section is the outer side of the intercepting blade 20. The surface of the inner side of the cross section of the intercepting blade and / or the outer side of the cross section of the intercepting blade 20 may be provided with the first collision structure 30. Specifically, since the intercepting blade 20 is in the shape of a long strip, the cross section is a cross section along the length direction perpendicular to the intercepting blade 20, and the cross section may be any shape with bends, such as V-shaped, W-shaped, polygonal, N-shaped or Z-shaped. For example, when the cross section is V-shaped, it has a single bend; when the cross section is W-shaped, it has three bends; when the cross section is a polygon, such as a parallelogram, rhombus, square, rectangle, pentagon, hexagon, octagon, etc., it has at least four bends; when the cross section is Z-shaped, it has two bends, and similarly, when the cross section is N-shaped, it also has two bends.

[0169] Generally, since bending usually forms an angle, the inner side of the cross section is usually one side of the angle space forming the angle, and the outer side of the cross section is the side opposite to the inner side.

[0170] It can be known that when the first collision structure 30 is set on the intercepting wind blade 20, the first collision structure 30 can be set on the inner surface of the cross-section of the intercepting wind blade 20, or the first collision structure 30 can be set on the outer surface of the cross-section of the intercepting wind blade 20, or the first collision structure 30 can be set on both the inner surface and the outer surface of the cross-section of the intercepting wind blade 20.

[0171] It should be known that since the first collision structure 30 is arranged on the intercepting fan blade 20, and multiple intercepting fan blades 20 are radially connected to the fixed plate 10, no matter whether the first collision structure 30 is arranged on the V-shaped inner side or the V-shaped outer side of the intercepting fan blade 20, it is always located in the gap formed by two adjacent intercepting fan blades 20, so the oil smoke entering the gap can be separated.

[0172] In this embodiment, as in Embodiment 1, Figure 4 and Figure 5 As shown, the intercepting wind blade 20 includes a first blade portion 21 and a second blade portion 22 which are flat and long strips. The first side surface 210 of the first blade portion 21 is connected to the third side surface 220 of the second blade portion 22, so that the cross-section of the intercepting wind blade 20 is a V-shaped cross-section. The concave side of the V-shaped cross-section is the inner side of the intercepting wind blade 20, and the other side corresponding to the concave side of the V-shaped cross-section is the outer side of the intercepting wind blade 20. Specifically, the first side surface 210 of the first blade portion 21 and the third side surface 220 of the second blade portion 22 substantially overlap, thereby forming the V-shaped cross section, while the second side surface 211 of the first blade portion 21 is away from the first side surface 210, and the third side surface 220 of the second blade portion 22 is away from the fourth side surface 221. The surface of the first blade portion 21 is formed between the first side surface 210 and the second side surface 211, and the surface of the second blade portion 22 is formed between the third side surface 220 and the fourth side surface 221. As can be seen from the above, the first collision structure 30 can be provided on the inner side and / or outer side of the V-shaped cross section.

[0173] Among them, the first side surface 210 and the second side surface 211 are the two sides of the width direction of the first blade part 21, the third side surface 220 and the fourth side surface 221 are the two sides of the width direction of the second blade part 22, and when the first side surface 210 is connected to the third side surface 220, the first side surface 210 and the third side surface 220 are completely overlapped.

[0174] It can be known that the first collision structure 30 is provided on the second side surface 211 and / or the fourth side surface 221, and there are the following situations:

[0175] ① The first collision structure 30 is provided on the second side surface 211 and the fourth side surface 221;

[0176] ② The first collision structure 30 is disposed on the second side surface 211 but not on the fourth side surface 221;

[0177] ③ The first collision structure 30 is disposed on the fourth side surface 221 but not on the second side surface 211 .

[0178] Furthermore, the first blade portion 21 and the second blade portion 22 are of equal length, and since the cross-section of the intercepting wind blade 20 is V-shaped, the second blade portion 22 intersects with the first blade portion 21 to form a first angle α, 30°≤α≤150°, preferably, the first angle α can be 30°, 45°, 60°, 90°, 120°, 150°, etc.

[0179] Since the second blade portion 22 intersects with the first blade portion 21 to form the first angle α, the speed of the oil fume will slow down at the position of the first angle α when passing through the intercepting fan blade 20. According to Bernoulli's principle, the smaller the speed, the greater the pressure. Therefore, a small range of pressure difference will be generated at the position of the first angle α of the intercepting fan blade 20, resulting in reverse reflux. However, since the suction force generated after the separation disk rotates is dominant, the oil fume continues to flow in the mainstream direction. The oil fume in the mainstream direction and the oil fume returning in the opposite direction contact each other to generate a vortex, that is, after the oil fume passes through the position of the first angle α of the intercepting fan blade 20, a local vortex is generated. The oil mist collides violently in the vortex and gathers into oil droplets. The vortex also generates heat due to material friction, resulting in energy exhaustion. The vortex disappears, and the oil droplets and other impurities in the vortex are finally thrown out of the separation disk at a higher tangential speed under the action of the centrifugal force generated by the rotation of the separation disk, while the exhaust gas directly flows outside the center disk and is discharged to the outside through the exhaust device, thereby further improving the oil fume purification effect.

[0180] As can be seen from the above, the inner side of the V-shape refers to one side C of the V-shape forming an angle space (such as Figure 2 ), and the outer side of the V-shape is the side opposite to the inner side.

[0181] Further, the first collision structure 30 is provided on the surface of the first blade part 21 and the surface of the second blade part 22. Specifically, the first blade part 21 and the second blade part 22 are both long flat sheet-like parts.

[0182] Taking the first collision structure 30 being disposed on the inner side of the V-shape as an example, the position of the first collision structure 30 on the intercepting blade 20 can be in the following ways:

[0183] ① The first collision structure 30 is provided on the surface of the first blade part 21 and the surface of the second blade part 22;

[0184] ② The first collision structure 30 is provided on the surface of the first blade portion 21;

[0185] ③ The first collision structure 30 is provided on the surface of the second blade portion 22 .

[0186] The first collision structure 30 covers the intercepting blade 20 in the following ways:

[0187] ① The projection area of ​​the first collision structure 30 on the surface of the first blade part 21 is smaller than the area of ​​the surface of the first blade part 21 .

[0188] ② The projection area of ​​the first collision structure 30 on the surface of the first blade part 21 is equal to the area of ​​the surface of the first blade part 21 .

[0189] ③ The projection area of ​​the first collision structure 30 on the surface of the second blade part 22 is smaller than the area of ​​the surface of the second blade part 22 .

[0190] ④ The projection area of ​​the first collision structure 30 on the surface of the second blade part 22 is equal to the area of ​​the surface of the second blade part 22 .

[0191] It can be understood that when the first collision structure 30 is disposed on the outer side of the V-shape and when the first collision structure 30 is disposed on the inner side of the V-shape, the position and coverage of the first collision structure 30 on the intercepting blade 20 are the same.

[0192] The first embodiment of the present invention is preferably described by taking the first collision structure 30 located at the inner side of the V-shape and provided on the surface of the first blade part 21 and the surface of the second blade part 22 as an example.

[0193] Specifically, when the intercepting blade 20 is installed on the fixed plate, the second blade part 22 of the intercepting blade 20 is usually located above the first blade part 21, and when the oil smoke enters the intercepting blade 20, it usually enters from bottom to top, that is, when the oil smoke passes through the intercepting blade 20, it first contacts the first blade part 21. Therefore, the first blade part 21 is close to the position where the oil smoke enters the gap between two adjacent intercepting blades 20, so the first collision structure 30 can be preferably arranged on the surface of the second blade part 22, so that when the oil smoke is about to be discharged through the second blade part 22, due to the action of the first collision structure 30 on the second blade part 22, the speed of the oil smoke passing through the second blade 12 is slowed down, thereby extending the separation time of the oil smoke in the gap, and further making the separation of the oil smoke more thorough.

[0194] It should be known that the first collision structure 30 can be integrally formed on the surface of the first blade part 21 and the surface of the second blade part 22, and the projection area of ​​the first collision structure 30 on the inner surface of the intercepting blade 20 is equal to the surface area of ​​the intercepting blade 20, thereby simplifying the processing procedures of the intercepting blade 20 and improving the processing efficiency. At the same time, the method of integrally forming and the projection area of ​​the first collision structure 30 on the inner surface of the intercepting blade 20 being equal to the surface area of ​​the intercepting blade 20 can also avoid the first collision structure 30 adopting a split design and the possibility of gaps or additional parts, thereby causing oil droplets to accumulate in the gaps or additional parts, which is not conducive to the cleaning of the intercepting blade 20.

[0195] In the present embodiment, since the intercepting blade 20 is a long strip-shaped component, the two ends of the intercepting blade 20 are respectively the first end and the second end, and the first end and the second end are respectively the two ends in the length direction of the intercepting blade 20, and the first collision structure 30 can be a long strip-shaped protrusion, a groove or a combination of the two, and the first collision structure 30 extends from the first end to the second end, or the length direction of the first collision structure 30 extends along the length direction of the intercepting blade 20, and the length of the first collision structure 30 is less than the length of the intercepting blade 20. Specifically, when the intercepting blade is applied to the oil fume separation disk and installed to the fixing disk of the oil fume separation disk, the first end of the intercepting blade is preferably an end close to the center of the oil fume separation disk, and the second end of the intercepting blade is an end relatively far away from the center of the oil fume separation disk.

[0196] As an optional embodiment, the first collision structure is a long strip-shaped convex strip, and the first collision structure 30 can extend from the first end to the second end, that is, the first collision structure 30 is equal in length to the interception blade 20. In this way, when the interception blade 20 is used to intercept the oil fume airflow, the entire intersection of the interception blade 20 can form turbulence due to the action of the first collision structure 30, thereby increasing the collision probability between the oil fume airflow and the interception blade 20.

[0197] As another optional embodiment, the first collision structure 30 is also a long strip-shaped convex strip, but the length of the first collision structure 30 is less than the length of the intercepting blade 20. For example, the convex strip is only set at a position close to the first end of the intercepting blade 20, or is set from the first end to a position almost in the middle, or is only set at a position close to the second end, or is set from the second end to a position almost in the middle, or is set at a position between the first end and the second end, etc. This method is mainly adopted because: when the intercepting blade 20 is used in the oil fume separation plate to intercept oil fume, the number of intercepting blades 20 is large. When multiple intercepting blades 20 are installed, the second end of the intercepting blade 20 is usually the first to contact the oil fume airflow, while the first end is less in contact with the oil fume airflow. Therefore, if the long strip-shaped convex strip is set at a position close to the second end, or is set from the second end to a position almost in the middle, the oil fume airflow can be turbulent when passing through these positions, slowing down the speed of the oil fume airflow passing through these positions, so that as much grease and particles as possible can be separated.

[0198] Similarly, if the first collision structure 30 is a long strip-shaped groove, its arrangement on the intercepting blade 20 can be the same as the arrangement of the long strip-shaped protrusion described above, so it will not be described in detail.

[0199] Similarly, if the first collision structure 30 is a combination of long strip protrusions and grooves, for example, part of it is set as protrusions and part of it is set as grooves, its setting method can also be the same as the above-mentioned setting method of the long strip protrusions, which will not be repeated here.

[0200] Furthermore, when the first collision structure 30 is a long strip-shaped protrusion, the height of the long strip-shaped protrusion near the first end is less than or equal to the height of the long strip-shaped protrusion near the second end. Specifically, if the height of the long strip-shaped protrusion near the first end is equal to its height near the second end, it means that the height of the long strip-shaped protrusion is uniformly set. If the height of the long strip-shaped protrusion near the first end is less than its height near the second end, it means that the height of the long strip-shaped protrusion can gradually increase from the first end to the second end, or the height of the long strip-shaped protrusion near the first end is relatively small, the height of the long strip-shaped protrusion near the middle is relatively large, and the height of the protrusion near the second end is also relatively small, but it should be ensured that the height of the protrusion near the second end should be greater than the height of the protrusion near the first end. Such a design is adopted mainly because: when the interception blades 20 are applied to the oil fume separation plate for oil fume interception, the number of interception blades 20 is large, and a gap is formed between two adjacent interception blades 20 for the oil fume airflow to pass through, so that the oil fume airflow can contact the interception blades and the first collision structure 30 on the interception blades 20. Since the gap gradually increases from the first end to the second end, if the protrusion height of the long strip protrusion at the first end is too high, it may cause the gap between the two adjacent interception blades 20 at the position of the first end to be smaller, which is not conducive to the installation of the two adjacent interception blades 20. In addition, it can be known from the above that when the oil fume airflow enters the gap, the second end and the middle position are first contacted. Therefore, the protrusion height of the long strip protrusion at the second end and the middle position can be slightly larger than the protrusion height at the first end, which can not only reduce the width of the gap so that the oil fume airflow will not pass through the gap all at once, but also slow down the speed of the oil fume airflow passing through these positions as much as possible, thereby improving the oil fume separation effect.

[0201] Similarly, when the first collision structure 30 is a long strip groove, the depth of the long strip groove near the first end is less than or equal to the depth of the long strip groove near the second end. Specifically, the depth of the long strip groove near the first end is less than the depth of the long strip groove near the second end. This is because when the interception fan blade 20 is applied to the oil fume separation plate to intercept oil fume, it is mainly through installing the first end of the interception fan blade 20 to the oil fume separation plate. If the depth of the long strip groove near the first end is large, it is easy to cause the structural strength of the interception fan blade 20 at the first end to be insufficient. In this way, during high-speed rotation, the interception fan blade 20 may break. Therefore, it is preferred that the depth of the long strip groove near the second end is greater than the depth near the first end.

[0202] In this embodiment, when the first collision structure is a convex column, a concave pit or a combination of the two, the intercepting blade 20 may be provided with a plurality of first collision structures 30, and the plurality of first collision structures 30 are arranged and distributed along the width direction of the intercepting blade 20, and two adjacent first collision structures 30 are closely fitted (e.g. Fig.14) as shown in part a of ) or has a gap.

[0203] Taking the convex column as an example, among the plurality of convex columns, the definition that the plurality of first collision structures 30 are closely fitted to the adjacent first collision structures 30 in the width direction of the intercepting wind blade 20 means that the plurality of first collision structures 30 are continuously arranged in the width direction of the intercepting wind blade 20. The plurality of first collision structures 30 have a gap between the adjacent first collision structures 30 in the width direction of the intercepting wind blade 20. This arrangement can be roughly as follows: the plurality of convex columns are arranged from sparse to dense from the first end to the second end (e.g. Fig.14 Alternatively, the plurality of protrusions are arranged from the first end to the second end from dense to sparse (as shown in part b of FIG. Fig.14 The plurality of protrusions may be sparsely arranged from the first end to the middle, then evenly arranged in the middle, and finally densely arranged from the middle to the second end (as shown in part c of FIG. Fig.14 That is to say, when a plurality of bosses are provided, there may be a variety of uneven arrangement modes, and these various arrangement modes may be adjusted and set according to actual conditions.

[0204] The above arrangement is adopted mainly because: when the intercepting fan blade 20 is applied to the oil fume separation plate to intercept oil fume, the oil fume airflow first contacts the second end and the middle position. Therefore, the arrangement of the convex columns at the second end and the middle position can be slightly denser than the arrangement at the first end, which can slow down the speed of the oil fume airflow passing through the second end and the middle position as much as possible, thereby improving the oil fume separation effect.

[0205] Similarly, when the first collision structure 30 is a concave pit, its arrangement method can also be the same as the arrangement method of the convex column, so it will not be described in detail.

[0206] In this embodiment, when the first collision structure is a convex column, a concave pit or a combination of the two, the intercepting wind blade 20 may be provided with a plurality of first collision structures 30, and the plurality of first collision structures 30 are arranged continuously from the first end to the second end, or the plurality of the first collision structures 30 are arranged close to the first end or the second end.

[0207] Among them, taking the convex column as an example, among the multiple convex columns, multiple first collision structures 30 are arranged near the first end or the second end. This arrangement can be roughly as follows: the multiple convex columns are arranged near the first end, but no multiple convex columns are arranged near the second end, or the multiple convex columns are arranged near the second end, but no multiple convex columns are arranged near the first end, or the multiple convex columns are arranged in the middle between the first end and the second end, etc. In other words, when multiple convex columns are arranged, their arrangement positions can be different, and these different arrangement positions can be adjusted according to actual conditions.

[0208] The present patent preferably sets the plurality of the first collision structures 30 close to the second end, mainly because: when the interception blade 20 is applied to the oil fume separation plate to intercept oil fume, the oil fume airflow first contacts the second end position. Therefore, setting the plurality of the first collision structures 30 close to the second end can slow down the speed of the oil fume airflow passing through the second end position as much as possible, thereby improving the oil fume separation effect.

[0209] Similarly, when the first collision structure 30 is a concave pit, its arrangement method can also be the same as the arrangement method of the convex column, so it will not be described in detail.

[0210] In this embodiment, in order to avoid the situation where the gap between two adjacent intercepting blades 20 is too small due to the height of the raised structure being too high, resulting in too much resistance to the oil smoke and being unable to be discharged from the intercepting blades 20, and at the same time, in order to avoid the situation where the eddy current generated near the first collision structure 30 is too small due to the height of the raised structure being too low, resulting in the oil and fat and solid particulate matter in the oil smoke being unable to adhere to the first collision structure 30, the height of the raised structure should be less than or equal to one sixth of the gap between two adjacent intercepting blades 20. Since a plurality of intercepting blades 20 are radially arranged on the center of the center disk, and the intercepting blades 20 extend outward along the outer circumference of the center disk, the gap between two adjacent intercepting blades 20 increases with the increase of the extension length. The maximum gap formed at the ends of two adjacent intercepting blades 20 is denoted as L (see Fig.15 ), the height of the protruding structure is recorded as H1, then: H1≤1 / 6*L, for example: H1=1 / 10*L, H1=1 / 9*L, H1=1 / 8*L, H1=1 / 7*L, H1=1 / 6*L and so on.

[0211] Furthermore, in order to avoid the overall weight of the interception blade 20 being heavier due to the addition of the first collision structure 30, thereby affecting the rotation speed of the interception blade 20 and further affecting the separation effect of the oil smoke, the height of the protruding structure is less than or equal to three quarters of the thickness of the interception blade 20. That is, H1≤3 / 4*d, where H1 is the height of the protruding structure and d is the thickness of the interception blade 20, for example: H1=1 / 3*d, H1=5 / 12*d, H1=1 / 2*d, H1=7 / 12*d, H1=2 / 3*d, H1=3 / 4*d, and so on.

[0212] The following is a brief description of the effect of the height of the first collision structure 30 on the oil smoke separation rate, as shown in Table 1 below:

[0213]

[0214] Table 1

[0215] Table 1 shows that the intercepting blade 20 has different oil fume separation rates when no protruding structure is provided and when protruding structures of different heights are provided. It can be seen from Table 1 that when the thickness d of the intercepting blade and the gap L formed by two adjacent intercepting blades remain constant, the oil fume separation rate δ first increases and then decreases as the height H1 of the protruding structure increases. Specifically, when the height H1 of the protruding structure is from 0 to 1.0 mm, the oil fume separation rate δ increases as the height H1 of the protruding structure increases; when the height H1 of the protruding structure is from 1.0 mm to 1.2 mm, the oil fume separation rate δ decreases as the height H1 of the protruding structure increases. It can be seen that when the height H1 of the protruding structure is too large, it will affect the rotation speed of the separation disc, resulting in a decrease in the oil fume separation rate δ, and when the height H1 of the protruding structure increases to a certain height, the gap L formed by two adjacent intercepting blades will become very small, so that the oil fume entering the gap L per unit time will become less, thereby reducing the separation efficiency of the oil fume. When the height H1 of the raised structure is small, the eddy effect is not obvious enough, and the effect of improving the oil fume separation rate δ is not obvious enough. Therefore, considering the oil fume separation rate and the oil fume separation efficiency, the reasonable height H1 of the raised structure needs to be determined according to the gap L formed by the two adjacent interception blades and the thickness d of the interception blades to determine the effective and reasonable range. Therefore, the range of the height of the raised structure is: H1≤1 / 6*L and H1≤3 / 4*d. In this way, the purification effect of oil fume in the separation plate can be more effectively improved.

[0216] In this embodiment, the outer boundary of the cross section of the first collision structure along its length direction may be arc-shaped, wavy-shaped, broken line-shaped or a combination thereof. Specifically, if the first collision structure is a protrusion or a convex column, the outer boundary of the cross section of the first collision structure is a convex and outward boundary; if the first collision structure is a groove or a pit, the outer boundary of the first collision structure is an inwardly concave boundary. Specifically, the outer boundary of the cross section of the first collision structure may be an arc-shaped, that is, the first collision structure may be a cylinder, an elliptical cylinder or a sphere; if the cross section of the first collision structure is a broken line, such as a two-fold line, a three-fold line or a four-fold line, etc., the first collision structure may be a triangular pyramid, a quadrangular prism, a cuboid, etc.

[0217] See also Figure 4 and Fig.16 As shown, as another embodiment, the first collision structure may also be a recessed structure provided on the surface of the first blade portion 21 and the surface of the second blade portion 22, such as a groove or a pit provided on the surface of the first blade portion 21 and the surface of the second blade portion 22.

[0218] It should be known that, since the concave structure is an inwardly concave setting, in order to avoid the structural strength of the interception fan blade 20 being insufficient due to the depth of the concave structure being too deep and to avoid the number of times that the oil smoke hits the interception fan blade 20 being unable to increase due to the depth of the concave structure being too shallow, the depth of the concave structure is less than or equal to one third of the thickness of the interception fan blade 20 itself, that is, H2≤1 / 3*d, wherein H2 is the height of the concave structure, and d is the thickness of the interception fan blade 20 itself (such as Fig.16 As shown). For example: H2=1 / 5*d, H2=1 / 4*d, H2=4 / 15*d, H2=1 / 3*d, and so on. Similarly, if the depth of the recessed structure is too deep, the gap formed by the two adjacent interception blades 20 will be too large, resulting in a reduction in the number of collisions when the oil smoke passes through the interception blades 20, thereby affecting the purification effect of the oil smoke. Therefore, the depth of the recessed structure is less than or equal to one-sixth of the gap formed between the two adjacent interception blades 20. That is, H2≤1 / 6*L, where H2 is the depth of the recessed structure, and L is the gap formed between the two adjacent interception blades 20. For example: H2=1 / 10*L, H2=1 / 9*L, H2=1 / 8*L, H2=1 / 7*L, H2=1 / 6*L, and so on.

[0219] The following is a brief description of the effect of the depth of the concave structure on the oil fume separation rate when the first collision structure 30 is a concave structure, as shown in Table 2 below:

[0220]

[0221] Table 2

[0222] Table 2 shows that the intercepting blade 20 has different oil fume separation rates when the recessed structure is not provided and when the recessed structure is provided with different depths. It can be seen from Table 2 that when the thickness d of the intercepting blade and the gap L formed between two adjacent intercepting blades remain constant, within a certain range, as the depth H2 of the recessed structure increases, the oil fume separation rate δ increases; beyond a certain range, as the depth H2 of the recessed structure increases, the oil fume separation rate δ decreases. Specifically, when the depth H2 of the recessed structure is from 0 to 0.34 mm, the oil fume separation rate δ increases with the increase of the depth H2 of the recessed structure; when the depth H2 of the recessed structure is from 0.34 mm to 0.64 mm, the oil fume separation rate δ decreases with the increase of the depth H2 of the recessed structure. It can be seen that, beyond a certain range, as the depth H2 of the recessed structure increases, the gap L formed between two adjacent intercepting blades 20 will become very large, resulting in fewer times that the oil fume hits the blade when passing through the gap L formed between two adjacent intercepting blades 20. Therefore, in order to more effectively improve the purification effect of oil smoke in the separation disk, the depth H2 of the concave structure needs to be determined in an effective and reasonable range according to the gap L formed by two adjacent interception blades and the thickness d of the interception blades. Therefore, the depth range of the concave structure is: H2≤1 / 6*L and H2≤1 / 3*d.

[0223] Preferably, in the present invention, if the first collision structure 30 is a recessed structure, it is preferred that the depth of the recessed structure gradually decreases from deep to shallow from the first end to the second end. In this way, while meeting the structural strength of the interception blade 20, the size of the gap of the interception blade 20 can also be optimized, while meeting the effect of generating turbulence in the gap.

[0224] In addition, it can be seen from the combination of the above Tables 1 and 2 that when the first collision structure 30 is a long strip-shaped protrusion, its separation rate is higher than the separation rate when the first collision structure 30 is a concave structure. This is because when the first collision structure 30 is a long strip-shaped protrusion, the oil smoke gathers at the position of the protrusion structure to generate more turbulence, thereby gathering more oil droplets. Therefore, the present invention preferably adopts the method in which the first collision structure 30 is a long strip-shaped protrusion.

[0225] The following is a brief description of the separation process of the oil smoke when the first collision structure 30 is disposed on the surface of the first blade part 21 and the surface of the second blade part 22:

[0226] When the intercepting fan blades 20 rotate at a high speed, a gap is formed between two adjacent intercepting fan blades 20. According to the Venturi effect, when the oil fume enters the gap, the flow path becomes narrower and the flow velocity increases. According to Bernoulli's principle, the flow velocity of the oil fume accelerates after entering the gap, and the pressure decreases and is much smaller than the pressure of the oil fume before entering the gap. Therefore, negative pressure areas are formed on the upper and lower surfaces of the entire separation plate, thereby forming an effective suction force, which continuously and quickly draws the oil fume into the gap for separation.

[0227] After the oil smoke enters the gap, some solid mixtures are thrown out along the end of the intercepting fan blade 20 at a high tangential speed due to the action of centrifugal force; and a part of the oil mist continuously collides with the first blade part 21 and the second blade part 22 in the gap and gathers into oil droplets, and is then thrown out at a high tangential speed under the action of centrifugal force, and another part of the oil mist is affected by the first collision structure 30 provided on the surface of the first blade part 21 and the surface of the second blade part 22 during the process of rising along the first blade part 21, and turbulence is generated at the first collision structure 30, and the oil mist continuously rotates in the turbulent flow and gathers into oil droplets, so that the oil droplets in the oil smoke are slowly separated. When the oil droplets accumulate more and more and accumulate to a certain weight, the oil droplets fall due to gravity and are then thrown out by the high-speed rotating intercepting fan blade 20, and the smoke after the oil droplet separation is directly discharged from the gap.

[0228] It can be seen from this that the use of the first collision structure 30 on the surface of the first blade part 21 and the surface of the second blade part 22 can not only allow as much oil smoke as possible to enter the gap along the first blade part 21, but also allow as much oil smoke as possible to gather at the intersection, thereby extending the time that the oil smoke stays in the gap and improving the oil smoke separation effect.

[0229] In the present embodiment, since the intercepting blade 20 is applied to the oil fume separation plate to perform the oil fume interception and separation function, in actual application, the intercepting blade 20 is usually installed on the fixed plate of the oil fume separation plate. Specifically, the fixed connection method between the intercepting blade 20 and the fixed plate of the oil fume separation plate can be: welding, riveting, bolt and screw connection, snap connection, pin connection, elastic deformation connection, lock connection or plug-in, etc. Taking riveting as an example, if the intercepting blade 20 is riveted to the fixed plate, the first end of the first blade part 21 and / or the second blade part 22 can be riveted to the fixed plate, or the second end of the first blade part 21 and / or the second blade part 22 can be riveted to the fixed plate, and of course, the first end and the second end of the first blade part 21 and the second blade part 22 can also be riveted and fixed to the fixed plate at the same time.

[0230] Furthermore, in order to facilitate the installation and connection between the intercepting fan blade 20 and the oil fume separation disk, a blade root 25 may be provided on one end of the intercepting fan blade 20, and the thickness of the blade root 25 gradually decreases from the end close to the intercepting fan blade 20 to the end away from the intercepting fan blade 20, wherein the one end of the intercepting fan blade 20 here refers to the first end of the intercepting fan blade 20. The blade root 25 includes an insertion portion 252 extending outward from the first end and a clamping portion extending downward from the insertion portion, and the insertion portion 252 and the clamping portion 251 are respectively used to be installed to the fixed disk of the oil fume separation disk, so that the intercepting fan blade 20 is fixed to the fixed disk. Specifically, the blade root 25 is a short strip-shaped sheet, and the length of the blade root 25 can be 1:10 to 1:15. Preferably, the length ratio of the blade root 25 to the intercepting blade 20 may be 1:10, 1:11, 1:12, 1:13, 1:14 or 1:15, etc.

[0231] The length ratio of the blade root 25 to the intercepting blade 20 is limited in order to avoid the length ratio between the blade root 25 and the intercepting blade 20 being too large, which would result in insufficient connection strength of the blade root 25 to the intercepting blade 20, thereby causing breakage at the connection between the blade root 25 and the intercepting blade 20 during high-speed rotation.

[0232] Specifically, the blade root portion 25 may be wedge-shaped as a whole, for example, the inserting portion 252 and the clamping portion 251 are both wedge-shaped, or only the inserting portion 252 may be wedge-shaped, while the clamping portion 251 is not necessarily wedge-shaped.

[0233] In this embodiment, it is preferred that the blade root portion 25 is wedge-shaped as a whole.

[0234] The design of the insertion portion 252 as a flat wedge shape is adopted mainly because: when the intercepting fan blades 20 are installed on the fixed plate of the oil fume separation plate, in order to ensure the oil fume separation effect, the number of the intercepting fan blades 20 installed on the fixed plate is relatively large. Since the intercepting fan blades are radially distributed and installed on the fixed plate, in order to make the insertion portions 252 of adjacent intercepting fan blades 20 tightly connected to the fixed plate, the insertion portion should preferably be wedge-shaped, which is not only conducive to the installation and connection of the two adjacent intercepting fan blades, but also can avoid the breakage of the blade root due to insufficient strength during high-speed rotation.

[0235] Specifically, the inclination angle of the inserting portion 252 may be θ, wherein 1°≤θ≤4°. For example, θ may be 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, etc. The inclination angle cannot be too large. If it is too large, it will be disadvantageous for the fitting of the blade roots 25 of two adjacent intercepting blades 20, thereby affecting the size of the gap formed by the two adjacent intercepting blades 20. If the inclination angle is too small, the thickness of the end of the inserting portion is small, which may cause the blade roots 25 to have insufficient strength and may break during high-speed rotation. Therefore, the inclination angle should be roughly maintained at a value of 1°≤θ≤4°.

[0236] In this embodiment, since the intercepting blades 20 need to be installed on the fixed plate when actually used, and in order to improve the oil fume separation efficiency, the number of the intercepting blades 20 is relatively large. The clamping portion 251 has an inclined surface 253, and taking the inclined surface 253 as an example of a side facing the V-shaped inner side of the intercepting blade 20, in order to further facilitate the fitting connection of two adjacent intercepting blades 20, a protrusion 253a may be provided on the inclined surface 253, and the protrusion 253a is used to make the blade roots 25 of the two adjacent intercepting blades 20 have a gap smaller than the minimum value of the gap when connected, and the gap can be used to fill adhesive (not shown), so that the blade roots 25 of the two adjacent intercepting blades 20 can be bonded together. Specifically, the convex block 253a can be arranged at the center of the inclined surface 253, and the protruding height of the convex block 253a should be less than one tenth of the thickness of the blade root 25 itself, so as to control the size of the gap formed between the blade roots 25 of two adjacent intercepting blades 20. Preferably, that is, L3≤1 / 10*L, wherein L3 is the gap formed between the roots 25 of two adjacent intercepting blades 20, and L is the gap formed between two adjacent intercepting blades 20. For example: L3=1 / 15*L, L3=1 / 14*L, L3=1 / 13*L, L3=1 / 12*L, L3=1 / 11*L, L3=1 / 10*L, etc.

[0237] The size of the gap is limited mainly to avoid the problem that the gap between two adjacent intercepting blades 20 is too large due to the gap being too large, thereby affecting the separation effect of the oil smoke, and at the same time, it can also reduce the use of adhesive, thereby avoiding waste. If the gap is too small, there will be too little adhesive between the blade roots 25 of the two adjacent gaps, and it will be difficult for the adhesive to play its role, resulting in the blade roots 25 of the two adjacent gaps being unable to be fastened and bonded together.

[0238] In addition, filling the gap with adhesive can not only fix the root portions 25 of the two adjacent intercepting fan blades 20, but also utilize the airtight property of the adhesive to prevent the oil smoke from being directly discharged from the root portions 25 of the two adjacent intercepting fan blades 20, so that the oil smoke can only be discharged after being gathered at the second end of the intercepting fan blade and separated, thereby further effectively improving the separation effect of the oil smoke.

[0239] In this embodiment, in order to make the connection between the blade roots 25 of two adjacent intercepting blades 20 tighter, a first transition plane 132 and a second transition surface 133 are formed at the connection between the insertion portion and the intersection of the blade roots 25, that is, a first transition surface 241 and a second transition surface 242 are provided at the intersection of the first side surface 210 and the third side surface 220. Specifically, the first transition surface 241 is located on the inner side of the intercepting blade 20, and the second transition surface 242 is located on the outer side of the intercepting blade 20. Preferably, the first transition surface 241 and the second transition surface 242 can both be planes, so that when the two adjacent intercepting blades 20 are connected, the fit between the two intercepting blades 20 is higher at the positions of the first transition surface 241 and the second transition surface 242, thereby avoiding the formation of a gap at the positions of the first transition surface 241 and the second transition surface 242.

[0240] It should be known that, since the gap formed between two adjacent intercepting blades 20 near the blade root 25 is very small, and the intercepting blade 20 mainly relies on the end away from the blade root 25 to separate the oil smoke, it is not necessary to set the first collision structure 30 (such as Figure 1 , Figure 6 , Fig.11 , Figure 13 and Fig.14 shown).

[0241] Further, in order to make the connection between the two adjacent intercepting blades 20 more closely without affecting the wind resistance of the oil smoke passing through the gap formed between the two adjacent intercepting blades 20, the projection length of the first transition surface 241 on the plane where the surface of the first blade part 21 and the surface of the second blade part 22 meet is less than or equal to one ninth of the projection length of the first blade part 21 and the second blade part 22 on the plane where the surface of the first blade part 21 and the surface of the first blade part 21 meet, that is, L2≤1 / 9*L3, where L2 is the projection length of the first transition plane 241 on the plane where the surface of the first blade part 21 and the surface of the first blade part 21 meet, and L3 is the projection length of the first blade part 21 and the second blade part 22 on the plane where the surface of the first blade part 21 and the surface of the first blade part 21 meet. For example: L2=1 / 12*L3, L2=1 / 11*L3, L2=1 / 10*L3, L2=1 / 9*L3, etc.

[0242] In this embodiment, in order to keep the intercepting blade 20 in rotational balance when rotating at high speed, the length and width of the first blade part 21 of the intercepting blade 20 should be consistent with the length and width of the second blade part 22. However, the thickness of the first blade part 21 and the thickness of the second blade part 22 may be the same or different. That is, in order to fully make the gap formed between the two adjacent intercepting blades 20 an effective gap, that is, when the oil smoke passes through the gap, the oil smoke can hit the intercepting blade 20, the length of the first blade part 21 is preferably the same as the length of the second blade part 22. In order to allow the oil smoke to pass through the gap formed by the two adjacent intercepting blades 20, it is necessary to keep the air inlet end and the air outlet end without wind force. Preferably, the width of the first blade part 21 is the same as the width of the second blade part 22. Since the thickness of the intercepting blade 20 itself has almost no effect on the oil smoke separation effect, the thickness of the first blade part 21 and the thickness of the second blade part 22 may be the same or different. The thickness of the first blade part 21 of the intercepting blade 20 of the present invention is the same as the thickness of the second blade part 22. This is beneficial to make the processing of the intercepting fan blade 20 simpler and save processing costs while ensuring that the intercepting fan blade 20 can effectively separate the oil smoke.

[0243] See also Fig.16 In this embodiment, in order to further increase the number of times that the oil smoke collides with the interception blade 20 to improve the separation effect of the oil smoke, a second collision structure 26 may be provided at the intersection of the first blade portion 21 and the second blade portion 22. The second collision structure 26 is used to increase the number of times that the oil smoke collides with the first blade portion 21 and the second blade portion 22, and can further make more grease and solid particulate matter in the oil smoke adhere to the interception blade 20, thereby improving the separation effect of the separation disk. Preferably, the second collision structure 26 is provided at the intersection of the first blade portion 21 and the second blade portion 22. The second collision structure 26 may be provided on the inner side of the interception blade 20, or on the outer side of the interception blade 20.

[0244] In this embodiment, the fixing plate 10 is provided with a circumferential groove 11b and an annular groove 11a, the circumferential groove 11b is provided along the circumference of the fixing plate 10 and opens outward, the annular groove 11a is provided in the fixing plate 10 and communicates with the circumferential groove 11b, and the angle between the opening direction of the circumferential groove 11b and the opening direction of the annular groove 11a is a right angle, an acute angle or an obtuse angle. The inserting portion 252 of the blade root 25 of the intercepting blade 20 is used to be inserted into the circumferential groove 11b, and the clamping portion 251 is used to be clamped to the annular groove 11a.

[0245] Specifically, the fixed disk 10 is a circular disk, and the fixed disk 10 includes a first fixed disk portion 11 and a second fixed disk portion 12, and the second fixed disk portion 12 is matched and connected with the first fixed disk portion 11 to form the circumferential groove 11b in the circumferential direction of the first fixed disk portion 11 and the second fixed disk portion 12. The angle between the opening direction of the annular groove 11a and the opening direction of the circumferential groove 11b can be a right angle, so that when the plurality of interception blades 20 are installed on the fixed disk 10, the upper surfaces of the plurality of interception blades are approximately parallel to the upper surface of the fixed disk 10, and the lower surfaces of the plurality of interception blades 20 are approximately parallel to the lower surface of the fixed disk 10, that is, the upper surface and the lower surface of the oil fume separation disk are approximately planes, so that when the oil fume separation disk is rotated, the oil fume separation disk has better balance.

[0246] More specifically, the first fixed disk part 11 and the second fixed disk part 12 are both circular disk-shaped structures, the center of the first fixed disk part 11 is collinear with the center of the second fixed disk part 12, the first fixed disk part 11 is provided with a first boss 211 protruding toward the second fixed disk part 12, the center of the first boss 111 is collinear with the center of the first fixed disk part 11, and the annular groove 11a is arranged around the outer periphery of the first boss 111. The clamping portion 251 of the blade root 25 of the intercepting fan blade 30 is engaged with the annular groove 11a to realize the connection between the intercepting fan blade 20 and the first fixed disk part 11. Specifically, the clamping portion 14 of the blade root 25 is provided with a bayonet corresponding to the annular groove 11a, and the bayonet is clamped in the annular groove 11a.

[0247] Among them, the first boss 111 is provided with a plurality of threaded holes, and the second boss 121 is also provided with threaded holes at a position corresponding to the threaded holes on the first boss 111, and bolts are passed through the threaded holes on the first boss 111 and the second boss 121 to fix the first boss 111 and the second boss 121 together, so that the intercepting fan blade 1 can be fixed in the installation space formed by the first fixed disk 11 and the second fixed disk 12, thereby preventing the intercepting fan blade 20 from being thrown out when the fixed disk rotates at high speed.

[0248] Further, in order to quickly and accurately dock the first fixed disk part 11 and the second fixed disk part 12 together, the first boss 111 is provided with a groove 111a or a block 111b, and the second boss 121 is provided with a block 111b or a groove 111a, and the groove 111a is engaged with the block 111b to dock the second boss 121 with the first boss 111. That is, when the first boss 111 is provided with a groove 111a, the second boss 121 is provided with a block 111b. When the first boss 111 is provided with a block 111b, the second boss 121 is provided with a groove 111a. Preferably, the first boss 111 is provided with a groove 111a, and the second boss 121 is provided with a block 111b. By providing a groove 111a on the first boss 111 and a clamping block 111b on the second boss 121, a positioning effect can be achieved when installing the second fixing plate 12, so that the second fixing plate 12 can be quickly and accurately installed on the first fixing plate 11, thereby saving assembly time for assemblers.

[0249] In this embodiment, the separation disk may be a single-layer separation disk formed by a single-layer interception blade 20 radially installed on a fixed disk, or the separation disk may be a multi-layer separation disk formed by a multi-layer interception blade 20 installed on a fixed disk, that is, the separation disk may be a single-layer separation disk, a two-layer separation disk 1, a three-layer separation disk, and the like. Taking the two-layer separation disk 1 as an example, the two-layer separation disk includes a first layer of interception blades 1a and a second layer of interception blades 1b, and the first layer of interception blades 1a and the second layer of interception blades 1b installed on the same separation disk are parallel to each other. The angle α of the first layer of interception blades 1a and the angle α of the second layer of interception blades 1b may be in the same direction (such as Fig.19 ) or vice versa (such as Fig. 20 ), with this separation plate, the interception blade 20 is twice as large as the traditional single-layer separation plate, and the collision area between the oil smoke and the interception blade 20 is also twice as large as the traditional one, which can effectively improve the oil smoke separation rate.

[0250] A separation plate provided in the second embodiment of the present invention enhances the roughness of the inner and outer surfaces of the intercepting blades by adding a first collision structure to the V-shaped intercepting blades, so that when the oil fume passes through the rotating intercepting blades, not only can the oil fume obtain more collisions when passing between two adjacent intercepting blades, but also as much grease, solid particles and other substances in the oil fume as possible can be collided and adhered to the intercepting blades, but also the time between the passage of grease, solid particles and other substances through the intercepting blades can be prolonged, thereby increasing the radial movement time of grease, solid particles and other substances using centrifugal force, increasing the oil removal rate of the oil fume purification device, and allowing the oil droplets in the oil fume to be completely separated and thrown out, thereby ensuring the oil fume purification efficiency and effect of the oil fume purification device, and reducing harm to the health of cooking personnel and pollution to the environment.

[0251] In addition, due to the addition of the first collision structure and the second collision structure, the oil smoke will generate vortices near the first collision structure and the second collision structure, so that the grease in the oil smoke is further separated, thereby achieving an improved effect of separating the oil smoke.

[0252] Embodiment 3

[0253] See also Fig.21 The second embodiment of the present invention provides an oil fume purification device, which includes a driving device 40 and a separation disk provided in the first embodiment. The driving device 40 is used to drive the central disk to rotate, so that the central disk drives the plurality of intercepting blades 20 to rotate. Specifically, the driving device 40 includes a motor output shaft 41, and the first fixed disk portion 11 and the second fixed disk portion 12 are both provided with a shaft hole 14. The motor output shaft 41 is connected with the shaft hole 14 to drive the first fixed disk portion 11 and the second fixed disk portion 12 to rotate, thereby driving the plurality of intercepting blades 20 to rotate.

[0254] A fume purification device provided in embodiment three of the present invention adopts a driving device to drive a central disk to drive the intercepting fan blade to rotate, so that the intercepting fan blade can have centrifugal force, thereby allowing the grease and solid particulate matter stuck on the intercepting fan blade to be thrown out, so that the surface of the intercepting fan blade remains clean.

[0255] The above is a detailed introduction to an oil fume intercepting fan blade, a separation disk and an oil fume purification device disclosed in an embodiment of the present invention. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the oil fume intercepting fan blade, the separation disk and the oil fume purification device of the present invention and their core ideas; at the same time, for general technical personnel in this field, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. The oil smoke intercepting fan blade is characterized by: The intercepting blade is in the shape of a long strip, and a first collision structure is provided on the surface of the intercepting blade for causing the oil smoke airflow to collide with the intercepting blade when passing through the intercepting blade; One end of the intercepting wind blade is provided with a blade root; The blade root is provided with a protrusion, and a gap through which oil smoke can pass is formed between two adjacent intercepting blades. The protrusion is used to make a space smaller than the gap between the blade roots of the two adjacent intercepting blades, and the gap is used to fill the adhesive so that the blade roots of the two adjacent intercepting blades are bonded together; The intercepting blade includes a first end and a second end opposite to each other along the length direction; The first collision structure is a long strip-shaped protrusion, a groove, or a combination of the two. The first collision structure extends from the first end to the second end. The length of the first collision structure is less than the length of the intercepting wind blade. When the first collision structure is a long strip-shaped protrusion, the height of the long strip-shaped protrusion close to the first end is less than or equal to the height of the long strip-shaped protrusion close to the second end; or, when the first collision structure is a long strip-shaped groove, the depth of the long strip-shaped groove close to the first end is less than or equal to the depth of the long strip-shaped groove close to the second end.

2. The oil smoke intercepting fan blade according to claim 1, characterized in that: The cross section of the intercepting blade has one or more bends.

3. The oil smoke intercepting fan blade according to claim 2 is characterized in that: The first collision structure is provided on the inner surface of the cross section of the intercepting wind blade and / or the outer surface of the cross section of the intercepting wind blade.

4. The oil smoke intercepting fan blade according to claim 1, characterized in that: There are a plurality of the first collision structures, and the plurality of the first collision structures are arranged and distributed along the width direction of the intercepting wind blade, and two adjacent first collision structures are closely fitted or have a gap.

5. The oil smoke intercepting fan blade according to any one of claims 1 to 3, characterized in that: A projection area of ​​the first collision structure on the surface of the intercepting wind blade is smaller than or equal to an area of ​​the surface of the intercepting wind blade.

6. The oil smoke intercepting fan blade according to any one of claims 1 to 3, characterized in that: The intercepting wind blade comprises a first blade portion and a second blade portion in an elongated shape, wherein a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting wind blade is a V-shaped cross section.

7. The oil smoke intercepting fan blade according to claim 6, characterized in that: The first blade portion includes a second side surface opposite to the first side surface, the second blade portion includes a fourth side surface opposite to the third side surface, and the first collision structure is provided on the second side surface and / or the fourth side surface.

8. The oil smoke intercepting fan blade according to claim 1 or 2, characterized in that: The intercepting blade comprises a first blade portion and a second blade portion in an elongated shape, wherein a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting blade is a V-shaped cross section; The concave side of the V-shaped cross-section is the inner side of the intercepting wind blade, and the side opposite to the inner side of the V-shaped cross-section is the outer side of the intercepting wind blade. A first transition surface and a second transition surface are provided at the intersection of the first side edge surface and the third side edge surface. The first transition surface is located on the inner side of the intercepting wind blade, and the second transition surface is located on the outer side of the intercepting wind blade.

9. The oil smoke intercepting fan blade according to any one of claims 1 to 3, characterized in that: One end of the intercepting wind blade is provided with a blade root portion extending outward, and the thickness of the blade root portion gradually decreases from the end close to the intercepting wind blade to the direction away from the end of the intercepting wind blade.

10. A separation disc, characterized in that: The separation disc comprises a fixed disc; and A plurality of long strip-shaped oil smoke intercepting blades, the plurality of intercepting blades are radially distributed and fixed to a fixed plate, a gap through which oil smoke can pass is formed between two adjacent intercepting blades, the intercepting blades are long strip-shaped, and a first collision structure for causing the oil smoke airflow to collide with the intercepting blade when passing through the intercepting blade is provided on the surface of all or part of the intercepting blades; One end of the intercepting wind blade is provided with a blade root; The blade root is provided with a protrusion, and a gap through which oil smoke can pass is formed between two adjacent intercepting blades. The protrusion is used to make a space smaller than the gap between the blade roots of the two adjacent intercepting blades, and the gap is used to fill the adhesive so that the blade roots of the two adjacent intercepting blades are bonded together; The intercepting blade comprises a first end and a second end opposite to each other along the length direction, the end close to the center of the separation disk is the first end, and the end far from the center of the separation disk is the second end; The first collision structure is a long strip-shaped protrusion, a groove, or a combination of the two. The first collision structure extends from the first end to the second end. The length of the first collision structure is less than the length of the intercepting wind blade. When the first collision structure is a long strip-shaped protrusion, the height of the long strip-shaped protrusion close to the first end is less than or equal to the height of the long strip-shaped protrusion close to the second end; or, when the first collision structure is a long strip-shaped groove, the depth of the long strip-shaped groove close to the first end is less than or equal to the depth of the long strip-shaped groove close to the second end.

11. The separation disc according to claim 10, characterized in that For two adjacent intercepting wind blades, a gap is formed between the inner side of one intercepting wind blade and the outer side of the other intercepting wind blade, and in all or part of the gap of the separation plate, the inner side of the one intercepting wind blade and / or the outer side of the other intercepting wind blade are provided with the first collision structure.

12. The separation disc according to claim 10, characterized in that The cross section of the intercepting wind blade has one or more bends, one side of the cross section is the inner side of the intercepting wind blade, and the other side of the cross section is the outer side of the intercepting wind blade; One or more first collision structures are provided on the outer side of all or part of the intercepting wind blades, and / or one or more first collision structures are provided on the inner side of all or part of the intercepting wind blades.

13. The separation disc according to claim 11, characterized in that The intercepting wind blade includes a relative inner surface and an outer surface, the inner surface is located on the inner side of the intercepting wind blade, and the outer surface is located on the outer side of the intercepting wind blade, and the inner side surface and / or the outer side surface of the intercepting wind blade are provided with the first collision structure.

14. The separation disc according to any one of claims 10 to 13, characterized in that The intercepting wind blade comprises a first blade portion and a second blade portion in an elongated shape, wherein a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting wind blade is a V-shaped cross section.

15. The separation disc according to claim 14, characterized in that The first blade portion includes a second side surface opposite to the first side surface, the second blade portion includes a fourth side surface opposite to the third side surface, and the first collision structure is provided on the second side surface and / or the fourth side surface.

16. The separation disc according to claim 10, characterized in that There are a plurality of the first collision structures, and the plurality of the first collision structures are arranged and distributed along the width direction of the intercepting wind blade, and two adjacent first collision structures are closely fitted or have a gap.

17. The separation disc according to any one of claims 10 to 13, characterized in that: A projection area of ​​the first collision structure on the surface of the intercepting wind blade is smaller than or equal to an area of ​​the surface of the intercepting wind blade.

18. The separation disc according to claim 10, characterized in that The gap between two adjacent intercepting blades gradually increases from a direction close to the center of the separation disk to a direction away from the center of the separation disk; The protruding height of the first collision structure is less than or equal to one sixth of the maximum value of the gap, and the protruding height of the first collision flow structure is less than or equal to three quarters of the thickness of the intercepting wind blade itself; The concave depth of the first collision structure is greater than or equal to one sixth of the maximum value of the gap, and the concave depth of the first collision flow structure is less than or equal to one third of the thickness of the intercepting wind blade itself.

19. The separation disc according to claim 10, characterized in that The fixed disk is provided with a circumferential groove and an annular groove, the circumferential groove is arranged along the circumference of the fixed disk and opens outward, the annular groove is arranged in the fixed disk and communicates with the circumferential groove, and the angle between the opening direction of the circumferential groove and the opening direction of the annular groove is a right angle, an acute angle or an obtuse angle; Of the two ends of the intercepting wind blade, the end close to the center of the separation disk is the first end, and the end away from the center of the separation disk is the second end; The first end of the intercepting wind blade is provided with a blade root portion, and the blade root portion includes an insertion portion extending outward from the first end and a clamping portion extending downward from the insertion portion, the insertion portion is used to be inserted into the circumferential groove, and the clamping portion is used to be clamped into the annular groove.

20. The separation disc according to claim 19, characterized in that The intercepting blade comprises a first blade portion and a second blade portion in an elongated shape, wherein a first side surface of the first blade portion is connected to a third side surface of the second blade portion, so that a cross section of the intercepting blade is a V-shaped cross section; A first transition surface extending along the length direction of the intercepting wind blade is provided on the inner side of the V-shaped cross section where the first blade part and the second blade part are connected to the blade root, and a second transition surface extending along the length direction of the intercepting wind blade is provided on the outer side of the V-shaped cross section where the first blade part and the second blade part are connected to the blade root; For two adjacent intercepting blades, the inner side of one of the intercepting blades is opposite to the other intercepting blade, and the first transition surface of the one intercepting blade matches the second transition surface of the other intercepting blade.

21. A separation disc according to any one of claims 10 to 13, characterized in that: The separation plate includes a single layer or multiple layers of intercepting wind blades, and each layer of intercepting wind blades includes a plurality of intercepting wind blades.

22. A fume purification device, characterized in that: The oil fume purification device comprises a driving device and a separation disk as described in any one of claims 10 to 21, wherein the driving device is used to drive the fixed disk to rotate so that the fixed disk drives the plurality of intercepting blades to rotate.

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