A left-right strong suction structure of a range hood and a range hood

Abstract

The application discloses a left-right strong suction structure of an oil fume extractor and the oil fume extractor, and the left-right strong suction structure of the oil fume extractor comprises a smoke collecting hood, an air inlet is arranged on the front side of the smoke collecting hood, and a plurality of liftable oil nets are arranged in the smoke collecting hood, wherein the oil net comprises a shielding side wall which is arranged in parallel with a front side plate where the air inlet is located. By arranging the plurality of liftable oil nets in the smoke collecting hood, the shielding side wall is arranged in parallel with the front side plate, the oil net is lifted by a user during use of the oil fume extractor, the air inlet on the side used by the user is opened, the air inlet on the side not used by the user is closed at the same time, the size of the air inlet is adjusted, the air inlet flow rate is increased, the exhaust rate of the oil fume is accelerated, and the working efficiency of the oil fume extractor is improved.

Description

Technical Field

[0001] This invention belongs to the field of range hood technology, specifically, it relates to a strong left and right suction structure for a range hood and a range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. Typically installed above cooking equipment, it quickly extracts, purifies, and exhausts the fumes produced during cooking. As an important kitchen appliance, range hoods have become increasingly common in homes.

[0003] Currently, range hoods mainly consist of a smoke collection hood, filter, duct, fan, and other components. When the range hood is working, the fan rotates at high speed inside, creating a pressure difference between the inside and outside of the hood. This allows outside air to flow through the duct into the hood, expelling the cooking fumes. The structure of the duct determines the range hood's airflow capacity.

[0004] In modern kitchens, cooktops are typically multi-burner, allowing users to cook on any of them. To accommodate these multi-burner cooktops, the air intake area of ​​the range hood needs to be increased. However, this increased intake area leads to a decrease in negative air pressure, resulting in lower efficiency for the range hood when only one burner is in use.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a range hood with a strong suction structure on both sides, which can open the air inlet on the user side and close the air inlet on the non-user side, adjust the size of the air inlet, increase the air flow rate, accelerate the emission rate of oil fumes, and improve the working efficiency of the range hood.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A range hood with strong left and right suction structure includes a smoke collection hood, an air inlet on the front side of the smoke collection hood, and multiple liftable oil filters inside the smoke collection hood. The oil filters include a shielding sidewall that is arranged parallel to the front side panel where the air inlet is located.

[0009] Preferably, the oil mesh includes a mesh surface that is perpendicular or inclined to the front side plate, the mesh surface has multiple mesh holes, and the side of the mesh surface facing the front side plate has a vertically extending shielding sidewall;

[0010] More preferably, the mesh surface is square, and the three sides of the mesh surface, excluding the side facing the front side plate, are provided with upwardly protruding oil mesh sidewalls, and the shielding sidewalls protrude upward from the mesh surface.

[0011] Preferably, the shielding sidewall has a square structure;

[0012] More preferably, the length of the shielding sidewall along the horizontal direction is greater than the length of the shielding sidewall along the vertical direction.

[0013] Preferably, multiple oil meshes are arranged sequentially in a horizontal direction inside the smoke collection hood;

[0014] A further preferred embodiment has a gap between two adjacent oil meshes.

[0015] Preferably, the width of the shielding sidewall along the vertical direction is greater than or equal to the width of the air inlet along the vertical direction, and the sum of the lengths of the multiple shielding sidewalls along the horizontal direction is greater than or equal to the length of the air inlet along the horizontal direction.

[0016] Preferably, the air inlet is elongated, with the longer side of the air inlet parallel to the horizontal plane.

[0017] Preferably, the air inlet is located near the bottom of the front panel.

[0018] Preferably, a push rod that can extend and retract vertically is provided inside the smoke collection hood, with the first end of the push rod connected to the oil mesh and the second end of the push rod fixed inside the smoke collection hood.

[0019] Preferably, an oil mesh support is provided between the first end of the push rod and the oil mesh. The oil mesh support includes a first side plate and a second side plate that are parallel to each other and extend vertically. The top of the first side plate and the top of the second side plate are connected by a third side plate. The bottom of the first side plate and the bottom of the second side plate are connected to the oil mesh. The third side plate is connected to the first end of the push rod.

[0020] Another object of the present invention is to provide a range hood, including the left and right strong suction structure of the range hood as described above.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] 1. This invention provides multiple liftable oil filters within the fume hood. Each oil filter includes a shielding sidewall parallel to the front panel. When using the range hood, the user raises the oil filter on the side they are using, opening the air inlet on that side and allowing the fumes to enter the fume hood and be discharged. Simultaneously, the user lowers the oil filter on the side they are not using, blocking the air inlet on that side and closing it. This increases the airflow velocity, accelerates the fume emission rate, and improves the efficiency of the range hood.

[0023] 2. This invention arranges multiple oil filters horizontally within the fume hood, allowing users to freely select which filter to raise or lower. It also closes the air inlet on the side not in use, increasing the airflow velocity and improving the range hood's efficiency. Furthermore, gaps between adjacent oil filters reduce resistance during raising and lowering, preventing adjacent filters from being pulled up and down with the filter.

[0024] 3. This invention designs the air inlet as a long strip, allowing it to cover multiple burners. This enables the range hood to be used with multi-burner stovetops, allowing users to freely choose which burner to use for cooking. Simultaneously, the air inlet's proximity to the bottom of the front panel reduces the distance between the inlet and the cooking fumes, allowing fumes generated during cooking to pass through the inlet quickly and accelerating fume extraction.

[0025] 4. This invention ensures that the vertical width of the shielding sidewall is greater than or equal to the vertical width of the air inlet. This allows the oil filter to be lowered so that the shielding sidewall completely blocks the air inlet, reducing the air intake area and accelerating the emission rate of oil fumes. Simultaneously, the sum of the horizontal lengths of multiple shielding sidewalls is greater than or equal to the horizontal length of the air inlet, allowing the user to freely choose how to raise or lower the oil filter. This closes the air inlet on the side not in use, increasing the airflow velocity and accelerating the emission rate of oil fumes.

[0026] 5. This invention provides an oil mesh support between the push rod and the oil mesh. The push rod pushes the oil mesh support, causing the oil mesh to rise and fall. At the same time, a first mounting plate and a second mounting plate are provided at the bottom of the oil mesh support, which increases the force-bearing area between the oil mesh support and the oil mesh, reduces the pressure on the oil mesh during the rising and falling process, prevents the oil mesh from deforming due to excessive pressure, and improves the service life of the oil mesh.

[0027] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0029] Figure 1 This is a schematic diagram of the left and right strong suction structure of a range hood according to the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the smoke collection hood in the left and right strong suction structure of a range hood according to the present invention;

[0031] Figure 3 This is a schematic diagram of the connection between the push rod and the oil filter in the left and right strong suction structure of a range hood according to the present invention;

[0032] Figure 4 This is a schematic diagram of the connection between the push rod and the oil filter bracket in the left and right strong suction structure of a range hood according to the present invention.

[0033] In the diagram: 1. Smoke hood; 11. Front side panel; 2. Air inlet; 3. Oil mesh; 31. Shielding side wall; 32. Mesh surface; 33. Mesh holes; 34. Oil mesh side wall; 4. Push rod; 41. Connecting hole; 5. Oil mesh bracket; 51. First side panel; 52. Second side panel; 53. Third side panel; 54. Mounting hole; 55. First through hole; 56. Second through hole; 57. First mounting plate; 58. Second mounting plate; 6. Motor; 61. Rotator; 7. Push rod bracket.

[0034] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] like Figure 1 and Figure 2As shown in the figure, this embodiment of the invention introduces a strong suction structure for a range hood, including a smoke collection hood 1, an air inlet 2 on the front side of the smoke collection hood 1, and multiple liftable oil filters 3 inside the smoke collection hood 1. The oil filters 3 include a shielding sidewall 31 arranged parallel to the front side plate 11 where the air inlet 2 is located.

[0039] This invention provides an air inlet 2 on the front panel 11 of a fume hood 1, and multiple liftable oil filters 3 inside the fume hood 1. Each oil filter 3 includes a shielding sidewall 31 arranged parallel to the front panel 11. When using the range hood, the user raises the oil filter 3 on the user's side, opening the air inlet 2 on the user's side, allowing the fumes to enter the fume hood 1 and be discharged through the air inlet 2 on the user's side. Simultaneously, the user lowers the oil filter 3 on the unused side, and the shielding sidewall 31 blocks the air inlet 2 on the unused side, closing it. This increases the airflow velocity, accelerates the fume discharge rate, and improves the working efficiency of the range hood.

[0040] When a user cooks food on the left side of the range hood, most of the fumes enter the fume collection hood 1 through the left air inlet 2, while less fumes enter through the right air inlet 2, resulting in wasted airflow on the right and low efficiency in fume extraction. In this embodiment of the invention, the user raises the left-side oil filter 3, opening the left air inlet 2 to allow fumes to enter the fume collection hood 1 and be exhausted; simultaneously, the user lowers the right-side oil filter 3, blocking the right air inlet 2 with the shielding sidewall 31, thus closing the right air inlet 2, reducing the air intake area, increasing the airflow velocity, and accelerating the fume extraction efficiency.

[0041] When a user cooks food on the right side of the range hood, most of the fumes enter the fume hood 1 through the right air inlet 2, while less fumes enter through the left air inlet 2, resulting in wasted airflow from the left side and low efficiency in fume extraction. In this embodiment of the invention, the user raises the right-side oil filter 3, opening the right-side air inlet 2 to allow fumes to enter the fume hood 1 and be exhausted; simultaneously, the user lowers the left-side oil filter 3, blocking the left-side air inlet 2 with the side wall 31, thus closing the left-side air inlet 2, reducing the air intake area, increasing the airflow velocity, and accelerating the fume extraction efficiency.

[0042] like Figure 3 As shown, in this embodiment of the invention, the oil mesh 3 includes a mesh surface 32 that is perpendicular or inclined to the front side plate 11. The mesh surface 32 is provided with a plurality of mesh holes 33. The mesh surface 32 is provided with a shielding sidewall 31 extending in a direction parallel to the front side plate 11 on the side facing the front side plate 11.

[0043] When the range hood is working, a pressure difference is created inside and outside the range hood. The oil fumes pass through the mesh 33 and enter the smoke collection hood 1. The oil mesh 3 filters the oil fumes, removes impurities contained in the oil fumes, and reduces the pollution of oil fumes to the environment.

[0044] like Figure 3 As shown, in another preferred embodiment of the present invention, the mesh surface 32 is square, and the mesh surface 32 has three sides other than the side facing the front side plate 11 with upward protruding oil mesh sidewalls 34. The blocking sidewalls 31 protrude upward from the mesh surface 32, and the mesh surface 32 is located at the bottom of the oil mesh 3.

[0045] This invention reduces the distance between the oil fumes and the mesh surface 32 by placing the mesh surface 32 at the bottom of the oil mesh 3, allowing the oil fumes to pass through the oil mesh 3 quickly. The oil mesh 3 filters the oil fumes, reduces the impurities contained in the oil fumes, and reduces the pollution of the oil fumes to the fume collection hood 1.

[0046] like Figure 2 As shown in the embodiment of the invention, the shielding sidewall 31 has a square structure. The length of one side of the shielding sidewall 31 along the horizontal direction is greater than the length of one side along the vertical direction. Multiple oil filters 3 are arranged sequentially along the horizontal direction inside the fume hood 1. When the user uses the range hood, the oil filter 3 on the user's side is raised, and the air inlet 2 on the user's side is opened, allowing the fumes to enter the fume hood 1 and be discharged through the air inlet 2 on the user's side. At the same time, the oil filter 3 on the unused side is lowered, and the shielding sidewall 31 blocks the air inlet 2 on the unused side, closing the air inlet 2 on the unused side, increasing the airflow velocity, accelerating the emission rate of fumes, and improving the working efficiency of the range hood.

[0047] like Figure 2 As shown, in another preferred embodiment of the present invention, there is a gap between two adjacent oil meshes 3. This reduces the resistance experienced by the oil meshes 3 during lifting and lowering, and prevents the oil meshes 3 from pulling adjacent oil meshes 3 up and down together during the lifting and lowering process.

[0048] like Figure 1 As shown in the embodiment of the present invention, the air inlet 2 is elongated, with the longer side of the air inlet 2 parallel to the horizontal plane, and the air inlet 2 is located on the front side plate 11 and close to the bottom of the front side plate 11.

[0049] This invention designs the air inlet 2 as an elongated strip, with the longer side of the air inlet 2 parallel to the horizontal plane. This allows the air inlet 2 to cover multiple burners, enabling the range hood to be used with multi-burner stovetops and allowing users to freely choose which burner to use for cooking. Simultaneously, the air inlet 2 is located near the bottom of the front side panel 11, reducing the distance between the air inlet 2 and the cooking fumes, allowing the fumes generated during cooking to pass through the air inlet 2 quickly, thus accelerating the fume extraction efficiency.

[0050] In this embodiment of the invention, the air inlet 2 can also be a triangle, trapezoid, parallelogram, or any other arbitrary shape.

[0051] like Figure 1 and Figure 2As shown, in this embodiment of the invention, the width of the shielding sidewall 31 along the vertical direction is greater than or equal to the width of the air inlet 2 along the vertical direction, and the sum of the lengths of the plurality of shielding sidewalls 31 along the horizontal direction is greater than or equal to the length of the air inlet 2 along the horizontal direction.

[0052] This invention achieves this by ensuring that the vertical width of the shielding sidewall 31 is greater than or equal to the vertical width of the air inlet 2. This allows the oil filter 3 to be lowered so that the shielding sidewall 31 completely blocks the air inlet, reducing the air intake area and accelerating the emission rate of oil fumes. Simultaneously, the sum of the horizontal lengths of multiple shielding sidewalls 31 is greater than or equal to the horizontal length of the air inlet 2, allowing the user to freely choose how to raise or lower the oil filter 3. This closes the air inlet on the side not in use, increasing the airflow velocity and accelerating the emission rate of oil fumes.

[0053] like Figure 2 As shown in the embodiment of the present invention, a retractable push rod 4 is provided inside the smoke hood 1, and the first end of the push rod 4 is connected to the oil filter 3. The present invention, by providing a retractable push rod 4 inside the smoke hood 1 and connecting the push rod 4 to the oil filter 3, allows the oil filter 3 to rise and fall by controlling the extension and retraction of the push rod 4. Adjusting the height of the oil filter 3 allows one side of the air inlet 2 to be opened or closed during the raising and lowering of the oil filter 3, thereby adjusting the air intake area and improving the working efficiency of the range hood.

[0054] like Figure 3 and Figure 4 As shown in the embodiment of the invention, an oil mesh support 5 is provided between the first end of the push rod 4 and the oil mesh 3. The oil mesh support 5 includes a first side plate 51 and a second side plate 52 extending upward from the mesh surface 32. The tops of the first side plate 51 and the second side plate 52 are connected by a third side plate 53. The first side plate 51 and the second side plate 52 are respectively provided with a first through hole 55 and a second through hole 56. The third side plate 53 is provided with a mounting hole 54. The first end of the push rod 4 is inserted into the mounting hole 54. A connecting hole 41 is provided on the push rod 4.

[0055] When installing the push rod 4 and the oil mesh bracket 5, the first end of the push rod 4 is passed through the mounting hole 54, and the connecting rod is passed through the first through hole 55, the connecting hole 41 and the second through hole 56 in sequence to fix the push rod 4 and the oil mesh bracket 5.

[0056] This invention provides a connecting hole 41 on the push rod 4, and a first through hole 55 and a second through hole 56 on the first side plate 51 and the second side plate 52, respectively. A connecting rod is used to fix the push rod 4 and the oil mesh bracket 5. When the push rod 4 extends or retracts, it drives the oil mesh bracket 5 to move through the connecting rod, thereby driving the oil mesh 3 to rise and fall, adjusting the size of the air inlet 2, increasing the air intake speed, and improving the working efficiency of the range hood.

[0057] like Figure 4As shown, in another preferred embodiment of the present invention, the first through hole 55, the second through hole 56, and the connecting hole 41 are at the same height. When installing the push rod 4 and the oil filter bracket 5, only one connecting rod is needed to pass through the first through hole 55, the connecting hole 41, and the second through hole 56 in sequence to complete the installation of the push rod 4 and the oil filter bracket 5. The connecting rod has a simple structure, reduces the manufacturing cost of the range hood, and is easy to install. It allows users to remove the push rod 4 from the oil filter bracket 5, facilitating the maintenance of the range hood and improving its service life.

[0058] like Figure 4 As shown, in this embodiment of the invention, the oil mesh support 5 includes a first mounting plate 57 and a second mounting plate 58. The first mounting plate 57 extends horizontally from the bottom of the first side plate 51, and the second mounting plate 58 extends horizontally from the bottom of the second side plate 52. The first mounting plate 57 and the second mounting plate 58 are fixed on the oil mesh 3.

[0059] The present invention provides a first mounting plate 57 at the bottom of the first side plate 51 and a second mounting plate 58 at the bottom of the second side plate 52. When the push rod 4 extends or retracts, it drives the oil mesh 3 to rise or fall through the oil mesh bracket 5. This increases the force-bearing area between the oil mesh 3 and the oil mesh bracket 5, reduces the pressure on the oil mesh 3 during the rising or falling process, and prevents the oil mesh 3 from deforming due to excessive pressure.

[0060] like Figure 4 As shown, in another preferred embodiment of the present invention, the first mounting plate 57 extends horizontally toward the side away from the second side plate 52, and the second mounting plate 58 extends horizontally toward the side away from the first side plate 51. This facilitates the user in installing the oil mesh bracket 5 on the oil mesh 3, and the oil mesh bracket 5 can be removed from the oil mesh 3, making it convenient for the user to clean the oil mesh 3 and improving the service life of the oil mesh 3.

[0061] like Figure 2 and Figure 3 As shown in this embodiment of the invention, a motor 6 is provided inside the fume hood 1. The motor 6 includes a rotor 61, which is connected to the second end of the push rod 4. The push rod 4 is a lead screw, which converts the rotational motion of the rotor 61 into the linear motion of the push rod 4. When the motor 6 is working, the rotor 61 rotates, which simultaneously drives the push rod 4 to extend and retract, and drives the oil mesh 3 to rise and fall through the oil mesh bracket 5. This raises the oil mesh 3 on the user side, opens the air inlet 2 on the user side, and allows the fumes to enter the fume hood 1 and be discharged through the air inlet 2 on the user side. At the same time, it lowers the oil mesh 3 on the unused side, and the shielding side wall 31 blocks the air inlet 2 on the unused side, closing the air inlet 2 on the unused side, increasing the airflow velocity, accelerating the emission rate of fumes, and improving the working efficiency of the range hood.

[0062] like Figure 2As shown in this embodiment of the invention, a push rod bracket 7 is provided inside the smoke hood 1. The push rod bracket 7 is fixed to the front side plate 11, and the push rod 4 is detachably installed on the push rod bracket 7. The push rod 4 is fixed while maintaining a gap between it and the smoke hood 1 to facilitate the extension and retraction of the push rod 4 during operation. The detachable installation of the push rod 4 also facilitates future maintenance of the range hood and extends its service life.

[0063] This invention provides a range hood with a left-right strong suction structure as described in the previous embodiment. The range hood includes a housing containing a fan. During operation, the fan rotates at high speed inside the range hood, creating a pressure difference between the inside and outside. This allows external fumes to move into the range hood through the air inlet and be expelled. When the user uses the range hood, the user raises the grease filter 3 on the side being used, opening the air inlet 2 on that side, allowing the fumes to enter the fume collection hood 1 and be expelled. Simultaneously, the user lowers the grease filter 3 on the unused side, blocking the air inlet 2 on that side with the shielding side wall 31, thus closing the air inlet 2 on the unused side. This increases the airflow velocity, accelerates the fume emission rate, and improves the range hood's efficiency.

[0064] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0065] Except where at least some of such features and / or processes or units are mutually exclusive, any combination may be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0066] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A left and right strong suction structure of an extractor hood, comprising a smoke collecting cover (1), the front side of the smoke collecting cover (1) is provided with an air inlet (2), characterized in that, A plurality of oil nets (3) are arranged in the fume hood (1) and can be lifted, the oil net (3) comprises a shielding side wall (31) arranged in parallel with the front side plate (11) where the air inlet (2) is located; The oil net (3) comprises a mesh surface (32) arranged perpendicularly or obliquely to the front side plate (11), so that the user can freely select the oil net to be lifted; the mesh surface (32) is provided with a plurality of mesh holes (33), and the mesh surface (32) is provided with a shielding side wall (31) extending vertically on the side facing the front side plate (11). The mesh surface (32) is square, and three sides of the mesh surface (32) except the side facing the front side plate (11) are provided with oil net side walls (34) protruding upward, and the shielding side wall (31) protrudes upward from the mesh surface (32).

2. The left-right strong suction structure of a range hood according to claim 1, characterized in that, The shielding side wall (31) has a square structure.

3. The left-right strong suction structure of a range hood according to claim 2, characterized in that, The length of the shielding side wall (31) along the horizontal direction is greater than the length of the shielding side wall (31) along the vertical direction.

4. The left-right strong suction structure of a range hood according to claim 1, characterized in that, The plurality of oil nets (3) are arranged in the fume hood (1) along the horizontal direction.

5. The left-right strong suction structure of a range hood according to claim 4, characterized in that, Adjacent two oil nets (3) have a gap therebetween.

6. The left-right strong suction structure of a range hood according to claim 3, characterized in that, The width of the shielding side wall (31) along the vertical direction is greater than or equal to the width of the air inlet (2) along the vertical direction, and the sum of the lengths of the plurality of shielding side walls (31) along the horizontal direction is greater than or equal to the length of the air inlet (2) along the horizontal direction.

7. The left-right strong suction structure of a range hood according to claim 6, characterized in that, The air inlet (2) is long strip-shaped, and the longer side of the air inlet (2) is parallel to the horizontal plane.

8. The left-right strong suction structure of a range hood according to claim 7, characterized in that, The air inlet (2) is close to the bottom of the front side plate (11).

9. The left-right strong suction structure of a range hood according to any one of claims 1 to 8, characterized in that, A push rod (4) that can be extended up and down is arranged in the fume hood (1), the first end of the push rod (4) is connected with the oil net (3), and the second end of the push rod (4) is fixed to the inner side of the fume hood (1).

10. The left-right strong suction structure of a range hood according to claim 9, characterized in that, An oil net support (5) is arranged between the first end of the push rod (4) and the oil net (3), the oil net support (5) comprises first and second side plates (51, 52) extending vertically and in parallel with each other, the top of the first side plate (51) and the top of the second side plate (52) are connected by a third side plate (53), the bottom of the first side plate (51) and the bottom of the second side plate (52) are connected with the oil net (3), and the third side plate (53) is connected with the first end of the push rod (4).

11. A range hood characterized by The oil extraction hood comprises the left and right strong suction structure according to any one of claims 1-10.

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