Oil smoke separation device and range hood

Abstract

The invention discloses an oil smoke separation device which comprises a supporting frame and at least two blocking pieces installed in the supporting frame, the blocking pieces are arranged in parallel at intervals and distributed in the first direction, the first direction is perpendicular to the gravity direction, the extending direction of each blocking piece is the same as the gravity direction, and a circulation channel is formed between every two adjacent blocking pieces. The projections of the two adjacent blocking pieces on the two sides of the circulation channel in the gravity direction are not overlapped or only partially overlapped, and the distance of the circulation channel in the gravity direction is larger than the distance of the circulation channel in the horizontal direction. The smoke exhaust performance and the oil-smoke separation performance are both guaranteed, the smoke exhaust performance and the oil-fat separation performance are better, smoke exhaust with larger air volume is achieved, the application range is wide, adaptability is high, and in addition, oil is not prone to remaining, and cleaning is easy.

Description

Technical Field

[0001] The invention relates to the technical field of range hoods, in particular to a range hood and a fume separation device. Background Art

[0002] The range hood needs to separate the oil smoke and grease so that only the smoke can be discharged. The traditional range hood directly sucks the oil smoke into the range hood, and separates the oil smoke through collision (the movement of the oil smoke contacts the baffle or other mechanical structure inside the range hood to produce collision) and centrifugal separation to discharge the smoke in the oil smoke and leave the grease. However, the existing range hoods have the following shortcomings and defects:

[0003] 1. Due to structural design defects, grease remains inside the range hood, making it difficult to clean the accumulated oil inside. The more grease remains, the greater the load on the motor and the unbalanced impeller, causing the range hood to shake, which in turn has a great impact on the service life of the range hood and the efficiency of oil fume separation (including exhausting smoke and separating grease from smoke), reducing the service life and the efficiency of oil fume separation.

[0004] 2. Reference Figure 1 and Figure 2 , Figure 1 and Figure 2 The structural design of two baffles for achieving oil fume separation in an existing range hood is shown as an example. The arrow in the figure indicates the moving direction of the oil fume. Due to this baffle structural design, in existing range hoods, the path that the oil fume passes through is often very curved, and even forms a bend of 90° or more, which greatly blocks the wind speed (i.e., the speed at which the oil fume moves), thereby reducing the effect of exhausting the smoke. When the size is fixed, the wind speed and air volume are proportional. The greater the wind speed, the greater the air volume, and vice versa. Since this baffle structural design blocks the wind speed, the wind speed and air volume are reduced, thereby reducing the smoke extraction effect, and the passage is too short, which greatly reduces the oil fume separation effect.

[0005] In order to increase the smoke exhaust needs, the existing smoke baffles are enlarged in size, so that the cross-sectional area formed by the baffles in the range hood for the smoke to pass through is increased, so as to exhaust as much smoke as possible per unit time, but this will result in a larger volume of smoke and occupy more space.

[0006] In addition, due to this structural design, the moving path of the oil smoke realizes a large direction of turning, and the oil smoke collides with the baffle more violently, thereby causing a large noise. Therefore, when such a range hood is working, the noise generated is large and the user experience is poor.

[0007] 3. A large number of smaller baffles are needed to form an overall baffle structure through position distribution design, including the manufacturing of a single piece and the installation of each piece, which is more complicated. In addition, according to different appearance designs, baffle groups with different plane sizes need to be matched to meet the design requirements. Different plane size baffles need to develop molds of different sizes to meet the design requirements, resulting in higher development costs.

[0008] In summary, the oil fume separation effect of existing range hoods needs to be further improved, including increasing the air volume (wind speed), reducing development costs, reducing or even eliminating noise, and reducing the surface area while ensuring the same oil fume extraction performance. Summary of the invention

[0009] In view of the deficiencies in the prior art, an object of the present invention is to provide an oil fume separation device and a range hood, which can solve the problems described in the background technology.

[0010] The technical solution to achieve the purpose of the present invention is: an oil fume separation device, comprising a support frame and at least two baffles installed in the support frame, each baffle is arranged in parallel and spaced apart, and distributed along a first direction, the first direction is perpendicular to the direction of gravity, the extension direction of a single baffle is the same as the direction of gravity, and a flow channel is formed between two adjacent baffles.

[0011] The projections of two adjacent baffles on both sides of the flow channel in the direction of gravity do not overlap or only partially overlap.

[0012] The distance between the flow channels in the gravity direction is greater than the distance between the flow channels in the horizontal direction.

[0013] Furthermore, the support frame is a rectangular frame, and the support block includes four shielding plates connected together end to end in sequence, and the four shielding plates form a rectangular frame. A through cavity is provided in the rectangular frame, and an opening is provided at each of the upper and lower ends of the through cavity. Of the two openings, one serves as an air inlet and the other as an air outlet, and the baffle is provided between the air inlet and the air outlet.

[0014] Furthermore, the baffle includes a first connecting head, a plurality of bending units and a second connecting head. The bending units are connected together end to end in sequence to form a bending assembly, and the bending units are distributed along the direction of gravity. The two ends of the bending assembly are respectively connected to the first connecting head and the second connecting head. The first connecting head is connected to the end of the support frame where the air outlet is located, and the second connecting head is connected to the end of the support frame where the air inlet is located.

[0015] Furthermore, the first connector and the second connector have different or identical structures.

[0016] Further, the bending unit includes a first connection part, a second connection part and a steering assembly, one end of the first connection part and one end of the second connection part are connected together, and an angle A is formed at the connection, so that the bending unit composed of the first connection part and the second connection part forms a bend,

[0017] The steering assembly is disposed at the connection between the first connection portion and the second connection portion and protrudes outward.

[0018] Alternatively, the steering assembly is arranged at one end where the first connecting portion and the second connecting portion are connected and is located on one side of the second connecting portion.

[0019] Alternatively, the steering assembly is arranged at one end where the second connection portion is connected to the first connection portion and is located on one side of the first connection portion.

[0020] Alternatively, the steering assembly is simultaneously arranged on the first connection part and the second connection part. When the steering assembly is arranged on the first connection part, the steering assembly is arranged at the end where the first connection part and the second connection part are connected and is located on one side of the second connection part. When the steering assembly is arranged on the second connection part, the steering assembly is arranged at the end where the second connection part and the first connection part are connected and is located on one side of the first connection part.

[0021] Further, when the steering assembly is arranged at the connection between the first connection part and the second connection part, the steering assembly is a guide column, which is arranged along the radial direction of the baffle and perpendicular to the gravity direction, and the outer contour of the guide column is arc-shaped, and the guide column and the first connection part form an arc-shaped recess, and the guide column and the second connection part also form an arc-shaped recess, and the arc-shaped recess plays a guiding role, so that the oil smoke flowing out of the arc-shaped recess is turned toward the first connection part or the second connection part opposite to the arc-shaped recess.

[0022] When the steering component is arranged on the first connection part and / or on the second connection part, the steering component is a hook, which is arranged at one end where the first connection part and the second connection part are connected and located on one side of the second connection part.

[0023] Alternatively, the hook is arranged at one end where the second connecting portion is connected to the first connecting portion and is located on one side of the first connecting portion.

[0024] Furthermore, the hook includes a straight portion, a static pressure zone forming portion and a hook head, one end of the straight portion is connected to the first connecting portion or the second connecting portion, and the other end of the straight portion is connected to the hook head. The straight portion and the hook head are connected together to form the static pressure zone forming portion, and the static pressure zone forming portion is provided with a static pressure zone with an opening, and the opening is arranged inclined downward.

[0025] Furthermore, the projections of the two steering assemblies in two adjacent baffles in the vertical direction are in contact and do not overlap, or the projections of the two steering assemblies in two adjacent baffles in the vertical direction at least partially overlap, so that the projections of the two adjacent baffles on both sides of the flow channel in the gravity direction do not overlap or only partially overlap.

[0026] Furthermore, all or part of the first connection part and / or the second connection part is provided with a wavy serrated part, and the surface of the wavy serrated part forms a wavy serrated shape.

[0027] Furthermore, the surface of the baffle is treated by a hydrophobic and oleophobic nano-spraying process, and the baffle is made of aluminum profile.

[0028] Beneficial effects of the present invention: The present invention forms the circulation channel through the structural design of the baffle itself and the distribution of each baffle. The circulation channel can generally maintain a vertical direction as a whole. When the oil fume passes through the device, the gas is diverted for multiple times to form a vortex. After colliding with the baffle, the grease condenses on the baffle, and the smoke continues to be discharged along the channel, thereby achieving oil fume separation. In addition, the oil fume separation is achieved through the bending unit inside the circulation channel. On the one hand, the oil fume flow path does not need to go through a large turn like in traditional range hoods. On the other hand, it can also well ensure the fluidity of the oil fume, thereby taking into account the exhaust performance of the smoke and the separation performance of the oil fume, so as to ensure that the smoke can be discharged and the grease can be separated efficiently. Compared with traditional range hoods, under the same cross-sectional area of ​​the oil fume flow, the present invention can achieve a higher flow rate of the oil fume flow, better exhaust performance, and achieve a larger air volume exhaust, which can meet the demand for large air volume exhaust. In addition, the present application can well achieve oil fume separation through the bending unit, temporarily retaining the grease on the baffle to prevent the grease from being discharged from the air outlet along with the smoke, and the oil fume separation ability is stronger than that of the traditional range hood. Finally, by performing a hydrophobic and oleophobic nano-spraying process on the surface of the baffle, the temporarily retained grease can fall off by itself under the action of gravity, and can also be easily separated from the baffle, making cleaning more convenient. In addition, the present invention has a wide range of applications and high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 and Figure 2 The structural design of two baffles for separating oil smoke from an existing range hood is shown as an example. The arrows in the figure indicate the moving direction of the oil smoke.

[0030] Figure 3 It is a structural schematic diagram of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the support frame of the present invention after hiding a front shield and a side shield;

[0032] Figure 5 is a schematic diagram of the structure of the baffle;

[0033] Figure 6 A schematic diagram of a cross section of the present invention;

[0034] Figure 7 A schematic diagram of the structure of two adjacent baffles combined together in one example;

[0035] Figure 8 A schematic diagram of the structure of two adjacent baffles combined together in another example;

[0036] Fig. 9 It is a schematic diagram of applying the oil fume separation device of the present invention to three existing range hoods of different shapes and structures;

[0037] In the figure, 1- baffle, 101- first connector, 102- bending unit, 1021- first connecting part, 1022- guide column, 1023- second connecting part, 1024- hook, 10241- straight part, 10242- static pressure zone forming part, 10243- hook, 1025- wave serrated part, 103- second connector, 2- support frame, 3- circulation channel, 4- reinforcing rib. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0039] like Figure 3-Figure 9 As shown, this embodiment provides an oil fume separation device, including a support frame 2 and at least two baffles 1 installed in the support frame 2, each baffle 1 is arranged in parallel and spaced apart and distributed along a first direction, the first direction is perpendicular to the direction of gravity, and the extension direction of a single baffle 1 is the same as the direction of gravity.

[0040] For example, when the oil fume separation device is in use, the support frame 2 is vertically arranged, the gravity direction is vertically downward, and the first direction is horizontal, so each baffle 1 is distributed and installed in the support frame 2 along the horizontal direction, so that the distribution direction of each baffle 1 is perpendicular to the gravity direction. However, the extension direction (that is, the axial direction) of a single baffle 1 is the gravity direction, that is, a single baffle 1 is vertically installed in the support frame 2.

[0041] It should be noted that the extension direction of a single baffle 1 is the same as the direction of gravity, including the extension direction of a single baffle 1 strictly maintaining a vertical direction and strictly the same as the direction of gravity, and can also be approximately maintaining a vertical direction. Approximately maintaining a vertical direction includes errors caused by the manufacturing process of the baffle 1 and the inability to maintain the theoretical vertical direction, and also includes allowing the baffle 1 itself to set a certain inclination or a certain part of the baffle 1 has a certain inclination, and the entire baffle 1 is in a vertical state as a whole.

[0042] Exemplarily, the support frame 2 is a rectangular frame, and the support block includes four shielding plates connected end to end in sequence, and the four shielding plates are surrounded to form a rectangular frame, and a through cavity is provided in the rectangular frame, and an opening is provided at each of the upper and lower ends of the through cavity, and one of the two openings is used as an air inlet and the other as an air outlet. The baffle 1 is provided between the air inlet and the air outlet, that is, the baffle 1 is installed in the through cavity.

[0043] Exemplarily, the oil fume separation device further comprises a reinforcing rib 4 , which is fixedly or detachably mounted on the support frame 2 , and a reinforcing rib 4 is arranged between two adjacent baffles 1 in one or more groups.

[0044] For example, the interval area between two adjacent baffles 1 forms a flow channel 3 for the flow of oil smoke, and the smoke in the oil smoke enters from the air inlet, passes through the flow channel 3, and is finally discharged from the air outlet. Grease in the oil smoke temporarily remains on the surface of the baffle 1 after colliding with the baffle 1 during the flow process, or directly falls off after colliding with the baffle 1, passes through the flow channel 3, and finally falls out of the air outlet.

[0045] For example, the width of the support frame 2 is between 15 cm (centimeter) and 30 cm. Figure 2 The width of the support frame 2 is the distance of the support frame 2 along the x-axis direction in the figure. The width of the support frame 2 should not be too small or too large. If it is too small, it will affect the overall cross-sectional area of ​​the circulation channel 3, resulting in the amount of oil smoke discharged through the circulation channel 3 being affected.

[0046] For existing range hoods on the market, the standard width of the range hood is 900mm, so the width of the oil fume separation device on the X axis can be set to within 450mm, based on the length of the range hood cabinet, and the thickness on the Z axis can be set to within 400mm based on the thickness of the range hood cabinet. If placed in the center, one range hood is equipped with one oil fume separation device. Alternatively, the width of the oil fume separation device on the X axis can be set to within 450mm, and the thickness on the Z axis can be set to within 150-300mm, and placed side by side, so that one range hood is equipped with two oil fume separation devices.

[0047] Exemplarily, one or more of the four sides of the support frame 2 can be installed with a heating component for heating the baffle 1. Compared with the baffle 1 structure of the traditional range hood, when the heating component needs to be installed, the heating component can only be installed in the direction of the air inlet-air outlet connection line, which will block a part of the air inlet or air outlet, thereby affecting the smoke exhaust effect. The present invention can ensure that the heating component is installed on the side of the support frame 2, located on the outside of the circulation channel 3, and will not block the air inlet and air outlet, so that the smoke exhaust effect will not be reduced due to the need to install the heating component. In addition, the width of the support frame 2 does not need to be too large, so that the distance of the baffle 1 in the width direction is not long, and the heating component is located on one side of the baffle 1 to heat the baffle 1, which can quickly and fully conduct heat to meet the heating requirements. When the length of the baffle 1 is slightly longer (for example, 30cm), the heating components can be installed on the two sides of the support frame 2, and the heating components are located on both sides of the baffle 1, so that the baffle 1 is heated from both sides of the baffle 1 at the same time, which can also meet the fast and sufficient heat conduction and meet the heating requirements.

[0048] Exemplarily, the baffle 1 includes a first connector 101, a plurality of bending units 102 and a second connector 103, each bending unit 102 is connected together end to end to form a bending assembly, and each bending unit 102 is distributed along the direction of gravity, so that the extension direction of the baffle 1 is the same as the direction of gravity, that is, the baffle 1 is vertically arranged and installed in the support frame 2. The two ends of the bending assembly are respectively connected to the first connector 101 and the second connector 103, the first connector 101 is connected to one end of the support frame 2 where the air outlet is located, and the second connector 103 is connected to one end of the support frame 2 where the air inlet is located, so that the baffle 1 is installed in the through cavity of the support frame 2.

[0049] Exemplarily, the first connector 101 and the second connector 103 have different structures, so that the baffle 1 is only allowed to be installed on the support frame 2 in a specified direction to prevent installation errors. For example, the first connector 101 is only allowed to be installed at the end where the air inlet is located, and the second connector 103 is only allowed to be installed at the end where the air outlet is located, but the first connector 101 cannot be installed at the end where the air outlet is located, and the second connector 103 cannot be installed at the end of the air inlet, so as to avoid installation errors of the baffle 1. The structural difference can be a difference in shape, for example, the outer contour of the first connector 101 is an arc, and the outer contour of the second connector 103 is a rectangle. The structural difference can also be other differences, such as different sizes, or different components, and the difference in components includes different positions and / or connection methods of one or more components. It is only necessary to be able to distinguish the first connector 101 from the second connector 103.

[0050] Of course, the first connector 101 and the second connector 103 may also have the same structure.

[0051] Figure 7 The first connector 101 and the second connector 103 shown in the figure have different structures. Figure 8 The first connector 101 and the second connector 103 shown in the figure have the same structure.

[0052] Exemplarily, the bending unit 102 includes a first connection portion 1021, a second connection portion 1023 and a steering assembly, one end of the first connection portion 1021 and one end of the second connection portion 1023 are connected together, and an angle A is formed at the connection, so that the bending unit 102 composed of the first connection portion 1021 and the second connection portion 1023 is bent. The first connection portion 1021 and the second connection portion 1023 are roughly straight lines, and being roughly straight lines means that they can be standard straight lines, or they can be roughly straight lines as a whole formed by errors caused by manufacturing processes and other reasons and the errors are within the allowable range.

[0053] Exemplarily, the angle A=90-105°. The angle A should not be too large or too small. Since the first connection portion 1021 and the second connection portion 1023 are not arranged horizontally or vertically, but are arranged obliquely, when the angle A is 90°, the angle is also arranged obliquely.

[0054] The steering assembly is arranged at the connection between the first connection part 1021 and the second connection part 1023 and slightly protrudes outward, or the steering assembly is arranged at one end where the first connection part 1021 and the second connection part 1023 are connected and is located on one side of the second connection part 1023, that is, the steering assembly is located at one end of the first connection part 1021 and is protrudingly arranged on the outside of the connection where the first connection part 1021 and the second connection part 1023 are connected. Alternatively, the steering assembly is arranged at one end where the second connection part 1023 and the first connection part 1021 are connected and is located on one side of the first connection part 1021, that is, the steering assembly is located at one end of the first connection part 1021 and is protrudingly arranged on the outside of the connection where the first connection part 1021 and the second connection part 1023 are connected.

[0055] Of course, when the steering assembly is not arranged at the connection between the first connection part 1021 and the second connection part 1023, the steering assembly can be arranged at the first connection part 1021 and the second connection part 1023, that is, the steering assembly is arranged on both the first connection part 1021 and the second connection, rather than only the first connection part 1021 or only the second connection part 1023.

[0056] refer to Figure 7 and Figure 8 , Figure 7 The steering assembly is arranged at the connection between the first connection part 1021 and the second connection part 1023. Figure 8 The steering assembly is disposed at one end of the first connection portion 1021 and one end of the second connection portion 1023, that is, the steering assembly is disposed at one end of the first connection portion 1021 and one end of the second connection portion 1023. Of course, it is not required that the steering assembly is disposed on all the first connection portions 1021 and the second connection portions 1023, and it is only required that at least one first connection portion 1021 and / or the second connection portion 1023 is disposed with a steering assembly. Figure 8 As shown in the figure, not all of the first connection parts 1021 and the second connection parts 1023 are provided with steering components, and at least one first connection part 1021 and at least one second connection part 1023 are not provided with steering components.

[0057] When the steering assembly is disposed at the connection between the first connection portion 1021 and the second connection portion 1023, the steering assembly is a guide column 1022, and the guide column 1022 is disposed along the radial direction of the baffle 1 and is perpendicular to the direction of gravity. The outer contour of the guide column 1022 is arc-shaped, and can be a circular arc or an elliptical arc or other arc-shaped curves. The guide column 1022 and the first connection portion 1021 form an arc-shaped recess, and the guide column 1022 and the second connection portion 1023 also form an arc-shaped recess. The arc-shaped recess plays a guiding role, so that the oil smoke flowing here is turned toward the first connection portion 1021 or the second connection portion 1023 opposite to the arc-shaped recess, so that most of the oil smoke can contact the first connection portion 1021 and the second connection portion 1023 to produce a collision, so that the grease is temporarily retained in the first connection portion 1021 through the collision. 21 and the second connection part 1023, that is, temporarily retained on the surface of the first connection part 1021 and the second connection part 1023, but after the oil smoke stops moving, the temporarily retained grease can fall off from the first connection part 1021 and the second connection part 1023 under the action of its own gravity, so that the grease will not accumulate on the first connection part 1021 and the second connection part 1023, including completely accumulating or most of it is separated and only a very small part is accumulated on the first connection part 1021 and the second connection part 1023.

[0058] When the steering component is disposed on the first connection part 1021 and / or the second connection part 1023, the steering component is a hook 1024. The hook 1024 is disposed at one end where the first connection part 1021 and the second connection part 1023 are connected and is located on one side of the second connection part 1023, that is, the hook 1024 is located at one end of the first connection part 1021 and is protrudingly disposed on the outside of the connection where the first connection part 1021 and the second connection part 1023 are connected. Alternatively, the hook 1024 is disposed at one end where the second connection part 1023 and the first connection part 1021 are connected and is located on one side of the first connection part 1021, that is, the hook 1024 is located at one end of the first connection part 1021 and is protrudingly disposed on the outside of the connection where the first connection part 1021 and the second connection part 1023 are connected.

[0059] The hook 1024 includes a straight portion 10241, a static pressure zone forming portion 10242 and a hook head 10243. One end of the straight portion 10241 is connected to the first connecting portion 1021 or the second connecting portion 1023. The straight portion 10241 and the first connecting portion 1021 may be an integral structure, or the straight portion 10241 and the second connecting portion 1023 may be an integral structure. The other end of the straight portion 10241 is connected to the hook head 10243. The straight portion 10241 and the hook head 10243 are connected together to form the static pressure zone forming portion 10242. The static pressure zone forming portion 10242 is provided with a static pressure zone with an opening. The opening is tilted downward, and may be tilted downward to the left or tilted downward to the right. The straight portion 10241 and the hook head 10243 may also be an integral structure.

[0060] Similarly, the hook 1024 with the static pressure zone forming part 10242 can play a guiding role to change the moving direction of the oil smoke, so that the oil smoke can move toward the first connection part 1021 and the second connection part 1023 as much as possible, so that all or most of the oil smoke collides with the first connection part 1021 or the second connection part 1023, and achieves better oil smoke separation. In addition, by setting the hook 1024, it is possible to prevent the oil smoke from flowing out directly from the circulation channel 3, and the separated grease can be attached to the surface of the static pressure zone forming part 10242 vertically or nearly vertically, so as to better separate the grease from the steering assembly, the first connection part 1021 and the second connection part 1023.

[0061] Exemplarily, the length of the hook 10243 is 2 mm (millimeter) -3 mm, that is, the distance between the connection of the hook 10243 with the first connection part 1021 or the second connection part to the end of the hook 10243 away from the first connection part 1021 or the second connection part 1023 is 2 mm - 3 mm.

[0062] Exemplarily, the steering assemblies close to each other in two adjacent baffles 1 are respectively located on one side of the central axis of the circulation channel 3 and are just tangent to the central axis, that is, the projections of the two steering assemblies in the vertical direction are just in contact and do not overlap, or, one or both of the steering assemblies close to each other in two adjacent baffles 1 are located on the central axis or across the central axis, that is, the projections of the two guide columns 1022 in the vertical direction at least partially overlap.

[0063] refer to Figure 7 and Figure 8 , Figure 7 The two guide columns 1022 that are close to each other are located on one side of the central axis respectively, and are not located on the central axis or across the central axis. The projections of the two guide columns 1022 in the vertical direction just touch each other but do not overlap. Figure 8 One or both of the two hooks 1024 close to each other are located on the central axis. Of course, it is also feasible that one or both cross the central axis and are located on the side of the central axis close to each other, so that the projections of the two hooks 1024 in the vertical direction at least partially overlap.

[0064] Exemplarily, a wavy sawtooth portion 1025 is provided on the first connection portion 1021 and / or the second connection portion 1023 , and a surface of the wavy sawtooth portion 1025 forms a wavy sawtooth shape.

[0065] Of course, among all the bending units 102, it may be allowed that the wavy serrated portion 1025 is set on the first connection portion 1021 and / or the second connection portion 1023 on only a portion of the bending units 102, or it may be allowed that the wavy serrated portion 1025 is set on the first connection portion 1021 and / or the second connection portion 1023 on all the bending units 102.

[0066] refer to Figure 8 , a portion of the first connection portion 1021 and the second connection portion 1023 is provided with a wavy serrated portion 1025, and in the first connection portion 1021 and the second connection portion 1023 provided with the wavy serrated portion 1025, a portion of the first connection portion 1021 and the second connection portion 1023 are provided with the wavy serrated portion 1025 on both side surfaces, and a portion of the first connection portion 1021 and the second connection portion 1023 are provided with the wavy serrated portion 1025 only on the side surface of one side.

[0067] Providing the wave sawtooth portion 1025 on the first connection portion 1021 and the second connection portion 1023 can help increase the contact area between the oil smoke and the first connection portion 1021 and the second connection portion 1023, thereby increasing the collision area and improving the grease separation effect.

[0068] However, too many wave-toothed portions 1025 may hinder the movement of the oil smoke, thereby reducing the movement speed of the oil smoke and affecting the exhaust of the smoke. Therefore, too many wave-toothed portions 1025 should not be provided.

[0069] For example, the first connection part 1021 and the second connection part 1023 are provided with a non-smooth surface of the wavy sawtooth part 1025, which is conducive to grease separation, but also affects the smoke discharge. Therefore, the surface of the first connection part 1021 and the second connection part 1023 can also be set as a smooth surface, and the first connection part 1021 and the second connection part 1023 are straight lines, so that the surface of the first connection part 1021 and the second connection part 1023 is a smooth plane rather than a curved surface.

[0070] Exemplarily, the straight-line distance h between the first connector 101 and the second connector 103 of the baffle 1 and the horizontal spacing d between two adjacent baffles 1 satisfy the following relationship: h>d. It can be set that h is much larger than d, that is, h>>d. Generally, h is more than five times larger than d, that is, it can be considered to be much larger, that is, h>a*d, a>5. Of course, the multiple relationship of h and d can also be set according to actual conditions, so as to satisfy that h is much larger than d.

[0071] The purpose of setting h>d or h>>d is to make the flow channel 3 formed between the baffles 1 vertical and long, and its length is sufficient to separate all or most of the oil smoke when it passes through the flow channel 3, temporarily retain the grease on the baffle 1, and the oil smoke can also be discharged from the air outlet.

[0072] For example, the baffle 1 is made of aluminum profile. Aluminum profile has good thermal conductivity. When the oil smoke with high temperature (the oil smoke is generally generated by cooking) hits the baffle 1 with lower temperature, the grease in the oil smoke is cooled and condensed and separated from the gas smoke, thereby achieving oil smoke separation, and the cooled and condensed grease is temporarily retained on the baffle 1.

[0073] Among them, the aluminum profile can be made of aluminum alloy No. 6063, which has a thermal conductivity coefficient of 201W / (mk). Traditional range hoods are generally made of ADC12 die-cast aluminum, which has a thermal conductivity coefficient of only 96W / (mk). The oil fume separation device using aluminum alloy No. 6063 also has higher heat dissipation efficiency, which plays a role in cooling oil fume and separating grease.

[0074] Exemplarily, the surface of the baffle 1 is treated with a hydrophobic and oleophobic nano-spraying process, so that grease cannot adhere to the baffle 1 for a long time. When the oil smoke stops moving or moves slowly, the grease can be separated from the baffle 1 under the action of its own gravity or external force, and combined with warm water washing and the wind wheel reverses and blows air to the baffle 1 for a short time, thereby avoiding cleaning or convenient and quick cleaning, and it is not necessary to use tools to rub the surface of the baffle 1 to complete the cleaning of the grease. The hydrophobic and oleophobic nano-spraying process is a prior art, so it is not repeated here.

[0075] The present invention forms the circulation channel 3 by designing the structure of the baffle 1 itself and distributing and setting each baffle 1. The circulation channel 3 can generally maintain a vertical direction as a whole, and the inside of the circulation channel 3 realizes oil fume separation through the bending unit 102. On the one hand, the oil fume flow path does not need to go through a large turn like the traditional range hood. On the other hand, the fluidity of the oil fume can be well guaranteed, so as to take into account the smoke exhaust performance and the oil fume separation performance, so as to ensure that the smoke is discharged and the grease can be separated efficiently. Compared with the traditional range hood, under the same cross-sectional area of ​​the oil fume flow, the present invention can achieve a higher flow rate of the oil fume flow, better smoke exhaust performance, and realize smoke exhaust with a larger air inlet area and air volume, which can meet the smoke exhaust demand of large air volume. In addition, the present application can well realize oil fume separation through the bending unit 102, temporarily retain the grease on the baffle 1, and prevent the grease from being discharged from the air outlet along with the smoke. The oil fume separation ability is stronger than that of the traditional range hood. Finally, by performing a hydrophobic and oleophobic process on the baffle 1, the temporarily retained grease can be easily separated from the baffle 1, making cleaning more convenient.

[0076] Referring to 9, the present invention further provides a range hood, which includes the oil fume separation device. The oil fume separation device of the present invention can be applied to existing range hoods of various shapes and structures, including 7-shaped range hoods, side suction range hoods, and cabinet range hoods. The oil fume separation device of the present invention has a wide range of applications and high adaptability.

[0077] The embodiment disclosed in this specification is only an example of a unilateral feature of the present invention, and the protection scope of the present invention is not limited to this embodiment, and any other functionally equivalent embodiments fall within the protection scope of the present invention. For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. A fume separation device, characterized in that: The invention comprises a support frame and at least two baffles installed in the support frame, wherein the baffles are arranged in parallel and spaced apart and distributed along a first direction, the first direction is perpendicular to the direction of gravity, the extension direction of a single baffle is the same as the direction of gravity, and a flow channel is formed between two adjacent baffles. The projections of two adjacent baffles on both sides of the flow channel in the direction of gravity do not overlap or only partially overlap. The distance between the flow channels in the gravity direction is greater than the distance between the flow channels in the horizontal direction.

2. The oil fume separation device according to claim 1, characterized in that: The support frame is a rectangular frame, and the support block includes four shielding plates connected together end to end in sequence, and the four shielding plates form a rectangular frame. A through cavity is provided in the rectangular frame, and an opening is provided at each of the upper and lower ends of the through cavity. Of the two openings, one serves as an air inlet and the other as an air outlet, and the baffle is provided between the air inlet and the air outlet.

3. The oil fume separation device according to claim 1, characterized in that: The baffle includes a first connecting head, a plurality of bending units and a second connecting head. The bending units are connected together end to end in sequence to form a bending assembly, and the bending units are distributed along the direction of gravity. The two ends of the bending assembly are respectively connected to the first connecting head and the second connecting head. The first connecting head is connected to one end of the support frame where the air outlet is located, and the second connecting head is connected to one end of the support frame where the air inlet is located.

4. The oil fume separation device according to claim 3, characterized in that: The first connector and the second connector have different or identical structures.

5. The oil fume separation device according to claim 3 or 4, characterized in that: The bending unit includes a first connection part, a second connection part and a steering assembly, one end of the first connection part and one end of the second connection part are connected together, and an angle A is formed at the connection, so that the bending unit composed of the first connection part and the second connection part forms a bend, The steering assembly is disposed at the connection between the first connection portion and the second connection portion and protrudes outward. Alternatively, the steering assembly is arranged at one end where the first connecting portion and the second connecting portion are connected and is located on one side of the second connecting portion. Alternatively, the steering assembly is arranged at one end where the second connection portion is connected to the first connection portion and is located on one side of the first connection portion. Alternatively, the steering assembly is simultaneously arranged on the first connection part and the second connection part. When the steering assembly is arranged on the first connection part, the steering assembly is arranged at the end where the first connection part and the second connection part are connected and is located on one side of the second connection part. When the steering assembly is arranged on the second connection part, the steering assembly is arranged at the end where the second connection part and the first connection part are connected and is located on one side of the first connection part.

6. The oil fume separation device according to claim 5, characterized in that: When the steering assembly is arranged at the connection between the first connection part and the second connection part, the steering assembly is a guide column, which is arranged along the radial direction of the baffle and perpendicular to the gravity direction, and the outer contour of the guide column is arc-shaped, and the guide column and the first connection part form an arc-shaped recess, and the guide column and the second connection part also form an arc-shaped recess, and the arc-shaped recess plays a guiding role, so that the oil smoke flowing out of the arc-shaped recess is turned toward the first connection part or the second connection part opposite to the arc-shaped recess. When the steering component is arranged on the first connection part and / or on the second connection part, the steering component is a hook, which is arranged at one end where the first connection part and the second connection part are connected and located on one side of the second connection part. Alternatively, the hook is arranged at one end where the second connecting portion is connected to the first connecting portion and is located on one side of the first connecting portion.

7. The oil fume separation device according to claim 6, characterized in that: The hook includes a straight portion, a static pressure zone forming portion and a hook head, one end of the straight portion is connected to the first connecting portion or the second connecting portion, and the other end of the straight portion is connected to the hook head. The straight portion and the hook head are connected together to form the static pressure zone forming portion, and the static pressure zone forming portion is provided with a static pressure zone with an opening, and the opening is inclined downward.

8. The oil fume separation device according to claim 5, characterized in that: The projections of the two steering assemblies in two adjacent baffles in the vertical direction are in contact and do not overlap, or the projections of the two steering assemblies in two adjacent baffles in the vertical direction at least partially overlap, so that the projections of the two adjacent baffles on both sides of the flow channel in the gravity direction do not overlap or only partially overlap.

9. The oil fume separation device according to claim 5, characterized in that: A wave sawtooth portion is provided on all or part of the first connecting portion and / or the second connecting portion, and a surface of the wave sawtooth portion forms a wave sawtooth shape.

10. The oil fume separation device according to claim 1, characterized in that: The surface of the baffle is treated by a hydrophobic and oleophobic nano-spraying process, and the baffle is made of aluminum profile.

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