Range hood

Abstract

The present invention provides an oil fume suction machine. The oil fume suction machine includes a smoke collecting hood, an oil net and a deflector. The smoke collecting hood surrounds to form a smoke collecting cavity and is provided with a main smoke inlet and an auxiliary smoke inlet; the oil net is arranged at the main smoke inlet; the deflector is arranged at the auxiliary smoke inlet, and the deflector is connected to the inside of the smoke collecting hood and has a gap with the bottom of the smoke collecting hood to increase the flow velocity of the oil fume at the auxiliary smoke inlet. The smoke collecting hood of the oil fume suction machine is provided with a main smoke inlet and an auxiliary smoke inlet, wherein the auxiliary smoke inlet is used for sucking the escaped oil fume, and a deflector is arranged at the auxiliary smoke inlet, which increases the smoke collecting effect on the escaped oil fume.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly relates to a range hood. Background Art

[0002] Generally, a range hood has only one or two smoke inlets, with poor smoke gathering effect and a problem of much smoke escaping. The prior art usually solves the problem of smoke escaping by increasing the air volume, but this solution will result in the defect of increased noise, causing an adverse experience to users. Summary of the Invention

[0003] An object of the present invention is to provide a range hood. The smoke gathering hood of the range hood is provided with a main smoke inlet and an auxiliary smoke inlet, wherein the auxiliary smoke inlet is used for sucking the escaping smoke, and a flow guide plate is arranged at the auxiliary smoke inlet, increasing the smoke gathering effect on the escaping smoke.

[0004] To achieve the object of the present invention, the present invention adopts the following technical solutions:

[0005] According to one aspect of the present invention, there is provided a range hood. The range hood includes a smoke gathering hood, an oil net and a flow guide plate. The smoke gathering hood encloses to form a smoke gathering cavity and is provided with a main smoke inlet and an auxiliary smoke inlet; the oil net is arranged at the main smoke inlet; the flow guide plate is arranged at the auxiliary smoke inlet, and the flow guide plate is connected to the inside of the smoke gathering hood and has a gap with the bottom of the smoke gathering hood to increase the flow velocity of the smoke at the auxiliary smoke inlet.

[0006] According to an embodiment of the present invention, the middle part of the bottom of the smoke gathering hood bulges towards the smoke gathering cavity to form a smoke gathering bottom wall, the auxiliary smoke inlet is arranged at the side part of the smoke gathering bottom wall, the flow guide plate has a flow guiding surface, the flow guiding surface corresponds to the side part and has the gap with the smoke gathering bottom wall.

[0007] According to an embodiment of the present invention, the gap between one end of the flow guiding surface and the smoke gathering bottom wall is smaller than the gap between the other end of the flow guiding surface and the smoke gathering bottom wall, so as to increase the smoke flow velocity on the side of the flow guiding surface with a larger gap from the bottom of the smoke gathering hood.

[0008] According to an embodiment of the present invention, the flow guide plate further has a flow blocking surface, the flow blocking surface is connected to the side of the flow guiding surface far from the main smoke inlet and is connected to the side wall of the smoke gathering hood.

[0009] According to an embodiment of the present invention, the flow guide plate further has an oil guiding surface, the oil guiding surface is connected to the side of the flow guiding surface close to the main smoke inlet and is connected to the top of the smoke gathering hood.

[0010] According to an embodiment of the present invention, the range hood further includes an oil cup, the oil cup is disposed at the bottom of the smoke collecting hood, and the inclination angle of the oil guiding surface towards the oil cup is greater than or equal to 10°.

[0011] According to an embodiment of the present invention, the number of the auxiliary air inlets is two, the main air inlet is disposed at the middle of the bottom of the smoke collecting hood, and the two auxiliary air inlets are symmetrically disposed on both sides of the main air inlet. Correspondingly, the number of the flow guiding plates is also two.

[0012] According to an embodiment of the present invention, the oil mesh is provided with a plurality of strip-shaped air inlet holes, and the plurality of air inlet holes are arranged at equal intervals along the length direction of the range hood.

[0013] According to an embodiment of the present invention, the width of the air inlet holes located in the middle of the oil mesh is smaller than the width of the air inlet holes located on both sides of the oil mesh.

[0014] According to an embodiment of the present invention, the range hood further includes a fan assembly, the top of the smoke collecting hood has a first opening, and the fan assembly is disposed at the first opening.

[0015] One embodiment of the present invention has the following advantages or beneficial effects:

[0016] The smoke collecting hood of the range hood of the present invention is provided with a main air inlet and auxiliary air inlets. The auxiliary air inlets are used to inhale the escaping oil fumes. Flow guiding plates are disposed at the auxiliary air inlets, which increases the smoking effect on the escaping oil fumes; the flow guiding plates have flow guiding surfaces, and the gap between one side of the flow guiding surface and the bottom of the smoke collecting hood is greater than the gap between the other side of the flow guiding surface and the bottom of the smoke collecting hood, which reduces the probability of the oil fumes escaping to the other side of the flow guiding surface; the flow guiding plates have blocking surfaces, which makes the negative pressure on the oil fumes more concentrated and further prevents the oil fumes from escaping; the flow guiding plates also have oil guiding surfaces, which prevent the accumulated oil on the inner wall of the smoke collecting hood from directly dripping from the oil mesh and guide the accumulated oil into the oil cup disposed at the bottom of the smoke collecting hood; the width of the air inlet holes located in the middle of the oil mesh is smaller than the width of the air inlet holes located on both sides of the oil mesh, which changes the negative pressure distribution at the main air inlet, speeds up the flow rate of the oil fumes, and reduces the escape of the oil fumes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the drawings and describing its exemplary embodiments in detail, the above and other features and advantages of the present invention will become more apparent.

[0018] Figure 1 is a perspective view of a range hood shown according to an exemplary embodiment.

[0019] Figure 2 is a schematic diagram of the flow of the escaping oil fumes of a range hood shown according to an exemplary embodiment.

[0020] Figure 3 It is a schematic diagram of the flow of accumulated oil in an oil fume extractor shown according to an exemplary embodiment.

[0021] Figure 4 It is a schematic diagram of an oil mesh of an oil fume extractor shown according to an exemplary embodiment.

[0022] Figure 5 It is a perspective view of a deflector of an oil fume extractor shown according to an exemplary embodiment.

[0023] Figure 6 It is a perspective view of a smoke collecting hood of an oil fume extractor shown according to an exemplary embodiment.

[0024] Among them, the reference numerals are explained as follows:

[0025] 1. Smoke collecting hood; 11. Smoke collecting cavity; 12. Main smoke inlet; 13. Auxiliary smoke inlet; 14. Smoke collecting bottom wall; 141. Platform; 142. Side part; 2. Oil mesh; 21. Smoke inlet hole; 3. Deflector; 31. Deflecting surface; 32. Flow blocking surface; 33. Oil guiding surface; 4. Gap; 5. Oil cup; 6. Fan assembly; 61. Fan cover; 62. Fan main body. Detailed implementation manners

[0026] Now, the exemplary embodiments will be described more comprehensively with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that this invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0027] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the presence of additional elements / components / etc. in addition to the listed elements / components / etc.

[0028] As Figures 1 to 6 shown, Figure 1 A perspective view of an oil fume extractor provided by the present invention is shown. Figure 2 A schematic diagram of the flow of escaping oil fume of an oil fume extractor provided by the present invention is shown. Figure 3 A schematic diagram of the flow of accumulated oil in an oil fume extractor provided by the present invention is shown. Figure 4 A schematic diagram of the oil mesh 2 of an oil fume extractor provided by the present invention is shown. Figure 5 A perspective view of the deflector 3 of an oil fume extractor provided by the present invention is shown. Figure 6The perspective view of a smoke collecting hood 1 provided by the present invention is shown.

[0029] The range hood of the embodiment of the present invention includes a smoke collecting hood 1, an oil net 2 and a deflector 3. The smoke collecting hood 1 encloses to form a smoke collecting cavity 11 and is provided with a main air inlet 12 and an auxiliary air inlet 13; the oil net 2 is arranged at the main air inlet 12; the deflector 3 is arranged at the auxiliary air inlet 13, and the deflector 3 is connected to the inside of the smoke collecting hood 1 and has a gap 4 with the bottom of the smoke collecting hood 1 to increase the flow velocity of the oil fume at the auxiliary air inlet 13.

[0030] As Figures 1 to 3 shown, the smoke collecting hood 1 includes a top wall, a bottom wall and side walls. The bottom wall is located at the bottom of the smoke collecting hood 1 and is provided with a main air inlet 12 and an auxiliary air inlet 13. The main air inlet 12 is arranged corresponding to the area with relatively thick oil fume. The oil net 2 is arranged corresponding to the main air inlet 12 and is connected to the bottom wall of the smoke collecting hood 1 to filter a large amount of accumulated oil contained in the oil fume. The auxiliary air inlet 13 is arranged on one side of the main air inlet 12 and corresponds to the area with relatively thin oil fume. When the range hood is arranged corresponding to the cooking stove, the oil fume generated by cooking flows upward to reach the main air inlet 12. Due to the limited adsorption capacity of the main air inlet 12, part of the oil fume may flow along the bottom wall of the smoke collecting hood 1 to the auxiliary air inlet 13. The deflector 3 is arranged in the smoke collecting cavity 11 and is connected to the smoke collecting hood 1, so that a smoke guiding channel is formed between the deflector 3 and the bottom wall of the smoke collecting hood 1. By arranging the deflector 3 at the auxiliary air inlet 13 and having a certain gap 4 between the deflector 3 and the bottom of the smoke collecting hood 1, compared with the auxiliary air inlet 13 without the deflector 3, the oil fume can only enter the smoke guiding channel through the gap 4, thereby reducing the oil fume flow area at the auxiliary air inlet 13, increasing the flow velocity of the oil fume, and increasing the smoke collecting effect on the escaping oil fume at the auxiliary air inlet 13.

[0031] In a preferred embodiment of the present invention, the middle part of the bottom of the smoke collecting hood 1 bulges into the smoke collecting cavity 11 to form a smoke collecting bottom wall 14. The auxiliary air inlet 13 is arranged at the side part 142 of the smoke collecting bottom wall 14. The deflector 3 has a guiding surface 31, and the guiding surface 31 is arranged corresponding to the side part 142 and has a gap 4 with the smoke collecting bottom wall 14.

[0032] As Figures 1 to 3 、 Figure 6As shown, the bottom of the smoke collecting hood 1 bulges into the smoke collecting cavity 11 to form a smoke collecting bottom wall 14. The cross-sectional shape of the smoke collecting bottom wall 14 is similar to a trapezoid. The main smoke inlet 12 is arranged at the top platform 141 of the smoke collecting bottom wall 14, and the auxiliary smoke inlet 13 is arranged at the waist of the trapezoid corresponding to the smoke collecting bottom wall 14. The diversion surface 31 is arranged corresponding to the auxiliary smoke inlet 13. The diversion surface 31 corresponds to the smoke collecting bottom wall 14 where the auxiliary smoke inlet 13 is arranged and has a gap 4 with the smoke collecting bottom wall 14. When the cooking fumes escape to the auxiliary smoke inlet 13, under the action of the fan assembly 6 with the same power, the flow rate of the cooking fumes with the diversion plate 3 is greater than that without the diversion plate 3. Thus, the diversion surface 31 increases the negative pressure effect at the auxiliary smoke inlet 13.

[0033] In a preferred embodiment of the present invention, the gap 4 between one end of the diversion surface 31 and the smoke collecting bottom wall 14 is smaller than the gap 4 between the other end of the diversion surface 31 and the smoke collecting bottom wall 14, so as to increase the flow rate of the cooking fumes on the side of the smoke collecting hood 1 with a larger gap 4 from the diversion surface 31.

[0034] As Figure 3 shown, the gap 4 between the front end of the diversion surface 31 and the smoke collecting bottom wall 14 is smaller than the gap 4 between the rear end of the diversion surface 31 and the smoke collecting bottom wall 14, making the diversion channel gradually increase from front to back, and the negative pressure effect gradually become larger from front to back, increasing the flow rate of the cooking fumes at the rear side of the range hood, that is, the side of the range hood against the wall, and reducing the probability of the cooking fumes escaping to the front of the range hood.

[0035] In a preferred embodiment of the present invention, the diversion plate 3 further has a flow blocking surface 32. The flow blocking surface 32 is connected to the side of the diversion surface 31 away from the main smoke inlet 12 and is connected to the side wall of the smoke collecting hood 1.

[0036] As Figure 2 and Figure 5 shown, the flow blocking surface 32 extends outward from the side of the diversion surface 31 away from the main smoke inlet 12, that is, the outside of the diversion surface 31, to the side wall of the smoke collecting hood 1, thus closing one end of the smoke guiding channel, so that the cooking fumes can only flow into the smoke collecting cavity 11 concentratedly from the other end of the smoke guiding channel, making the negative pressure of the fan assembly 6 on the cooking fumes more concentrated and the flow rate larger, and further preventing the cooking fumes from escaping.

[0037] In a preferred embodiment of the present invention, the diversion plate 3 further has an oil guiding surface 33. The oil guiding surface 33 is connected to the side of the diversion surface 31 close to the main smoke inlet 12 and is connected to the top of the smoke collecting hood 1.

[0038] As Figure 3 and Figure 5As shown, the oil guiding surface 33 extends inward and upward from the side of the diversion surface 31 close to the main smoke inlet 12, that is, the inner side of the diversion surface 31, and then connects to the top of the smoke collecting hood 1, so as to guide the accumulated oil on the top of the smoke collecting hood 1 to flow down along the oil guiding surface 33, preventing oil droplets from directly dripping through the oil mesh 2.

[0039] In a preferred embodiment of the present invention, the range hood further includes an oil cup 5. The oil cup 5 is arranged at the bottom of the smoke collecting hood 1, and the inclination angle of the oil guiding surface 33 towards the oil cup 5 is greater than or equal to 10°.

[0040] As Figures 1 to 3 shown, the oil cup 5 is arranged at the rear side of the bottom of the smoke collecting hood 1, that is, below one side of the baking cavity of the smoke collecting hood 1. The front end of the oil guiding surface 33 is connected to the front side side wall of the smoke collecting hood 1. By tilting the oil guiding surface 33 towards the oil cup 5 with an inclination angle greater than or equal to 10°, the accumulated oil flowing down from the front side inner wall and the top wall of the smoke collecting hood 1 can flow along the oil guiding surface 33 to the rear side of the range hood and then be collected into the oil cup 5. If the inclination angle is too small, it is not conducive to the flow of the accumulated oil.

[0041] In a preferred embodiment of the present invention, the number of the auxiliary smoke inlets 13 is two. The main smoke inlet 12 is arranged in the middle of the bottom of the smoke collecting hood 1. The two auxiliary smoke inlets 13 are symmetrically arranged on both sides of the main smoke inlet 12. Correspondingly, the number of the diversion plates 3 is also two.

[0042] As Figures 1 to 3 shown, the smoke collecting hood 1 has a cuboid structure. The main smoke inlet 12 is arranged in the middle of the bottom wall 14 of the smoke collecting hood. The platform 141 formed by the middle of the bottom wall 14 of the smoke collecting hood bulging into the smoke collecting cavity 11 is similar to a rectangle or a square, so that the bottom wall 14 of the smoke collecting hood has a side part 142 in front of the platform 141, a side part 142 behind the platform 141, a side part 142 on the left side of the platform 141, and a side part 142 on the right side of the platform 141. The two auxiliary smoke inlets 13 are respectively arranged on the left side part 142 and the right side part 142. The two diversion plates 3 are also respectively arranged corresponding to the left auxiliary smoke inlet 13 and the right auxiliary smoke inlet 13. The two auxiliary smoke inlets 13 and one main smoke inlet 12 are arranged along the length direction of the smoke collecting hood 1, which can maximize the smoke collecting area and reduce the probability of oil fume escaping into the room.

[0043] In a preferred embodiment of the present invention, the oil mesh 2 is provided with a plurality of long strip-shaped smoke inlet holes 21. The plurality of smoke inlet holes 21 are arranged at equal intervals along the length direction of the range hood. The width of the smoke inlet holes 21 in the middle of the oil mesh 2 is smaller than the width of the smoke inlet holes 21 on both sides of the oil mesh 2.

[0044] As Figures 1 to 4As shown, a number of smoke inlet holes 21 are arranged at equal intervals along the length direction of the range hood, covering the entire oil mesh 2, which can ensure that the oil fume flowing to the main smoke inlet 12 can enter to the maximum extent. The width of the smoke inlet holes 21 on the left side gradually increases from the middle of the oil mesh 2 to the left part of the oil mesh 2, and the width of the smoke inlet on the right side gradually increases from the middle of the oil mesh 2 to the right part of the oil mesh 2, so as to change the negative pressure distribution at the main smoke inlet 12, make the pressure gradually increase from the corresponding position in the middle of the oil mesh 2 to the left and right sides, accelerate the flow rate of the oil fume, and thus enable the oil fume to be quickly sucked into the smoke collecting cavity 11 under the action of the fan assembly 6, reducing the escape of oil fume.

[0045] In a preferred embodiment of the present invention, the range hood further includes a fan assembly 6. The top of the smoke collecting hood 1 has a first opening, and the fan assembly 6 is arranged at the first opening.

[0046] As Figures 1 to 3 Shown, the fan assembly 6 includes a fan cover 61 and a fan main body 62 arranged inside the fan cover 61. The fan main body 62 is configured as a power source for the oil fume to pass through the main smoke inlet 12 and the auxiliary smoke inlet 13 into the smoke collecting hood 1 and the fan cover 61 respectively. A first opening is provided in the middle of the top of the smoke collecting hood 1, and the bottom of the fan cover 61 is open. The bottom of the fan cover 61 corresponds to the first opening and is fixedly connected to the smoke collecting hood 1, which can be welded or fixedly connected by screws, so that the smoke collecting cavity 11 is communicated with the inner cavity of the fan cover 61. Under the power action of the fan main body 62, most of the oil fume enters the smoke collecting cavity 11 and the inner cavity of the fan cover 61 through the main smoke inlet 12, and the remaining oil fume escapes to the auxiliary smoke inlet 13 and then enters the smoke guiding channel under the action of the fan main body 62 through the auxiliary smoke inlet 13, and then enters the smoke collecting cavity 11 and the inner cavity of the fan cover 61.

[0047] The smoke collecting hood 1 of the range hood of the present invention is provided with a main smoke inlet 12 and an auxiliary smoke inlet 13. The auxiliary smoke inlet 13 is used to suck the escaped oil fume. A flow guiding plate 3 is arranged at the auxiliary smoke inlet 13, which increases the smoking effect on the escaped oil fume; the flow guiding plate 3 has a flow guiding surface 31, and the gap 4 between one side of the flow guiding surface 31 and the bottom of the smoke collecting hood 1 is greater than the gap 4 between the other side of the flow guiding surface 31 and the bottom of the smoke collecting hood 1, reducing the probability of the oil fume escaping to the other side of the flow guiding surface 31; the flow guiding plate 3 has a flow blocking surface 32, making the negative pressure on the oil fume more concentrated and further preventing the oil fume from escaping; the flow guiding plate 3 also has an oil guiding surface 33, preventing the accumulated oil on the inner wall of the smoke collecting hood 1 from directly dripping from the oil mesh 2, and guiding the accumulated oil into the oil cup 5 arranged at the bottom of the smoke collecting hood 1; the width of the smoke inlet holes 21 in the middle of the oil mesh 2 is smaller than the width of the smoke inlet holes 21 on both sides of the oil mesh 2, changing the negative pressure distribution at the main smoke inlet 12, accelerating the flow rate of the oil fume, and reducing the escape of oil fume.

[0048] In the embodiments of the present invention, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0049] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0050] In the description of this specification, the description of terms such as "an embodiment", "a preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] The above are only the preferred embodiments of the embodiments of the present invention, and are not used to limit the embodiments of the present invention. For those skilled in the art, the embodiments of the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. A range hood, characterized in that, Including: A smoke collecting hood (1), the smoke collecting hood (1) encloses to form a smoke collecting cavity (11) and is provided with a main air inlet (12) and an auxiliary air inlet (13); the middle part of the bottom of the smoke collecting hood (1) bulges into the smoke collecting cavity (11) to form a smoke collecting bottom wall (14), and the auxiliary air inlet (13) is arranged at the side part (142) of the smoke collecting bottom wall (14); an oil net (2), the oil net (2) is arranged at the main air inlet (12); A deflector (3), the deflector (3) is arranged at the auxiliary air inlet (13), and the deflector (3) is connected to the inside of the smoke collecting hood (1) and has a gap (4) with the bottom of the smoke collecting hood (1) to increase the flow velocity of the oil fume at the auxiliary air inlet (13); the deflector (3) has a guiding surface (31), the guiding surface (31) is arranged corresponding to the side part (142) and has the gap (4) with the smoke collecting bottom wall (14); the deflector (3) also has an oil guiding surface (33), the oil guiding surface (33) is connected to one side of the guiding surface (31) close to the main air inlet (12) and is connected to the top of the smoke collecting hood (1); An oil cup (5), the oil cup (5) is arranged at the rear side of the bottom of the smoke collecting hood (1), the front end of the oil guiding surface (33) is connected to the front side side wall of the smoke collecting hood (1), and is inclined towards the oil cup (5) through the oil guiding surface (33), so that the accumulated oil flowing down from the front side inner wall and the top wall of the smoke collecting hood (1) flows along the oil guiding surface (33) to the rear side of the range hood and is collected into the oil cup (5).

2. The range hood according to claim 1, wherein, The gap (4) from one end of the guiding surface (31) to the smoke collecting bottom wall (14) is smaller than the gap (4) from the other end of the guiding surface (31) to the smoke collecting bottom wall (14), so as to increase the flow velocity of the oil fume on the side of the guiding surface (31) with a larger gap (4) from the bottom of the smoke collecting hood (1).

3. The range hood according to claim 1, wherein, The deflector (3) also has a flow blocking surface (32), the flow blocking surface (32) is connected to one side of the guiding surface (31) far from the main air inlet (12) and is connected to the side wall of the smoke collecting hood (1).

4. The range hood according to claim 1, wherein, The inclination angle of the oil guiding surface (33) towards the oil cup (5) is greater than or equal to 10°.

5. The range hood according to claim 1, wherein The number of the auxiliary air inlets (13) is two, the main air inlet (12) is arranged in the middle of the bottom of the smoke collecting hood (1), and the two auxiliary air inlets (13) are symmetrically arranged on both sides of the main air inlet (12). Correspondingly, the number of the deflectors (3) is also two.

6. The range hood according to claim 1, characterized in that, The oil net (2) is provided with a plurality of long strip-shaped air inlet holes (21), and the plurality of air inlet holes (21) are arranged at equal intervals along the length direction of the range hood.

7. The range hood according to claim 6, wherein, The width of the air inlet holes (21) in the middle of the oil net (2) is smaller than the width of the air inlet holes (21) on both sides of the oil net (2).

8. The range hood according to claim 1, wherein, It also includes a fan assembly (6), the top of the smoke collecting hood (1) has a first opening, and the fan assembly (6) is arranged at the first opening.

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