Range hood

Abstract

The embodiment of the utility model belongs to the technical field of kitchen appliances, and provides a range hood which comprises a machine body, a fan assembly, an exhaust fume collecting hood and an oil net. The fan assembly is arranged in a smoke exhaust channel of the machine body; the fan assembly is obliquely arranged relative to the plane where the machine body smoke inlet is located. The fan assembly comprises an impeller. A smoke collecting cavity is formed in the smoke collecting hood and communicates with the smoke inlet. A smoke guide cavity is formed in the oil screen; the smoke guide cavity is communicated with the smoke collection cavity and the smoke exhaust channel; the first net surface of the oil net is obliquely arranged relative to the plane of the smoke inlet; the first net face and the air inlet end of the fan assembly are oppositely arranged in the axis direction of the impeller. According to the extractor hood provided by the embodiment of the invention, the steering requirement of airflow before the airflow enters the fan assembly is reduced, the flowing resistance is reduced through the direct airflow path, and the suction efficiency of the extractor hood is improved. Due to the design of the inclined first net surface, oil fume can flow along a natural path, and the turning direction and resistance of the oil fume before the oil fume enters the fan assembly are reduced.

Description

TECHNICAL FIELD

[0001] The embodiments of the present application relate to the technical field of kitchen appliances. In particular, the present application relates to a range hood. BACKGROUND

[0002] A range hood is an electrical appliance installed in a kitchen.

[0003] In the related art, a top suction type range hood is installed above a cooking hob, usually fixed below a wall or a hanging cabinet. In this way, the range hood installed in this position can absorb the oil fume and steam rising from the cooking utensils.

[0004] However, the existing range hood has the problem of poor smoke suction effect. SUMMARY

[0005] The present application provides a range hood, which improves the suction strength of the range hood, improves the oil fume capture efficiency of the range hood, and improves the suction capacity of the range hood.

[0006] The embodiments of the present application provide a range hood, which comprises a machine body, a fan assembly, a smoke collecting hood, and an oil screen.

[0007] The machine body forms a smoke exhaust channel; the machine body has a smoke inlet, which is arranged at the bottom of the machine body and is in communication with the smoke exhaust channel.

[0008] The fan assembly is arranged in the smoke exhaust channel; the fan assembly is arranged obliquely relative to the plane in which the smoke inlet is located. The fan assembly comprises an impeller.

[0009] The smoke collecting hood is arranged at the bottom of the machine body. The smoke collecting hood forms a smoke collecting cavity, which is in communication with the smoke inlet.

[0010] Part of the oil screen is arranged in the smoke collecting cavity; the oil screen forms a smoke guiding cavity; the smoke guiding cavity is in communication with the smoke collecting cavity and the smoke exhaust channel; the oil screen comprises a first screen surface. The first screen surface is arranged obliquely relative to the plane in which the smoke inlet is located; along the axial direction of the impeller, the first screen surface and the air inlet end of the fan assembly are arranged oppositely.

[0011] The above technical solution has the following advantages or beneficial effects: by arranging the fan assembly obliquely relative to the plane in which the smoke inlet is located, the air inlet end of the fan assembly is inclined downward, and the air inlet end of the fan assembly faces the smoke inlet. Compared with the range hood in the related art, in which the air inlet end of the fan assembly is arranged vertically relative to the plane in which the smoke inlet is located, in the range hood provided by the embodiments of the present application, the oil fume generated in the cooking area can enter the air inlet end of the fan assembly without turning, and the oil fume can enter the air inlet end of the fan assembly along a direct path, which reduces the turning requirement of the airflow before entering the fan assembly. This direct airflow path reduces the flow resistance and improves the suction efficiency of the range hood.

[0012] Meanwhile, by tilting the fan assembly relative to the plane of the smoke inlet, the flow path of the oil fume is changed, and the fan assembly can achieve the same suction force at a lower power, thereby reducing energy consumption and improving the performance of the range hood.

[0013] In addition, by tilting the fan assembly relative to the plane of the smoke inlet, the airflow diversion and turbulence phenomenon of the range hood suction is reduced, which helps smooth airflow flow, thereby reducing the noise caused by airflow disturbance.

[0014] Further, the first mesh surface and the air inlet end of the fan assembly are oppositely arranged along the axial direction of the impeller, and by oppositely arranging the first mesh surface and the air inlet end of the fan assembly, it is ensured that the oil fume can directly enter the air inlet end of the fan assembly through the oil mesh. This direct path reduces airflow diversion and resistance, ensuring that the oil fume can be highly and quickly sucked in.

[0015] The first mesh surface is tilted relative to the plane of the smoke inlet, and the tilted first mesh surface design allows the oil fume to flow along a natural path, reducing the diversion and resistance of the oil fume before entering the fan assembly. By reducing the diversion and resistance in the oil fume flow path, this arrangement helps improve the suction efficiency of the range hood. By tilting the first mesh surface, the oil fume can be guided to the air inlet end of the fan assembly when passing through the first mesh surface. This optimized airflow direction reduces turbulence and vortex phenomena, making the airflow flow more stable and efficient, and reducing the turbulence and vortex phenomena in the airflow also helps to reduce the operating noise of the range hood, providing a quieter operating environment.

[0016] Meanwhile, the tilted mesh surface design can use gravity to help separate oil and particulate matter from the oil fume. The oil is more likely to accumulate on the inclined surface and flow into the oil tank, thereby improving the oil separation efficiency and reducing the risk of oil entering the fan assembly.

[0017] In some embodiments of the present application, the fan assembly is close to the bottom of the front side of the range hood, and is tilted away from the bottom side of the range hood relative to the bottom of the rear side of the range hood.

[0018] The above technical solution has the following advantages or beneficial effects: The fan assembly is arranged in an inclined manner, that is, the fan assembly is close to the bottom of the user, and is inclined relative to the bottom away from the user and the bottom side away from the range hood. In this way, the oil fume close to the user can be quickly sucked into the fan assembly, and this direct path reduces the spread of oil fume in the kitchen, improving the smoke suction efficiency. At the same time, the inclined fan assembly helps to guide the oil fume to enter the fan assembly along a more direct path, which reduces the resistance and turning requirement of the airflow, so that the oil fume can enter the fan assembly more smoothly, improving the overall performance of the range hood. The inclined fan assembly helps to guide the oil fume to enter the fan assembly along a more direct path, which reduces the resistance and turning requirement of the airflow, so that the oil fume can enter the fan assembly more smoothly, improving the overall performance of the range hood.

[0019] In some embodiments of the present application, the oil screen is recessed towards the side close to the fan assembly to form a smoke guide cavity; and the side of the oil screen towards the air inlet end of the fan assembly forms a first screen surface.

[0020] The above technical solution has the following advantages or beneficial effects: The recessed smoke guide cavity design helps to guide the oil fume to flow to the air inlet end of the fan assembly. The smoke guide cavity forms a channel to make the oil fume flow smoothly, reducing the flow resistance and turning requirement. By optimizing the flow path of the oil fume, the range hood can more efficiently capture and discharge the oil fume. This design ensures higher smoke suction efficiency and reduces the spread of oil fume in the kitchen.

[0021] In some embodiments of the present application, one end of the first screen surface close to the front side of the range hood forms a first end of the first screen surface; and one end of the first screen surface close to the rear side of the range hood forms a second end of the first screen surface.

[0022] The angle between the second end of the first screen surface to the first end of the first screen surface and the thickness direction of the range hood is A, and A satisfies: 20°<A<45°.

[0023] The above technical solution has the following advantages or beneficial effects: By setting the inclination angle of the first screen surface to 20-45°, the first screen surface can effectively guide the oil fume to flow to the fan assembly. This inclined first screen surface helps to reduce the resistance and turning in the oil fume flow path, so that the resistance in the airflow flow path containing oil fume is reduced, the range hood can more efficiently capture and discharge the oil fume, reduce the spread of oil fume in the kitchen, and improve the overall smoke suction effect. The first screen surface with an inclined design reduces the turning in the airflow flow, reduces the turbulence and vortex phenomenon in the airflow, thereby reducing the operating noise of the range hood, and providing a quieter operating environment for the user.

[0024] The inclined first mesh surface design utilizes the effect of gravity to help grease and particles separate more easily from the fumes and flow into the oil tank. This can reduce the risk of grease entering the fan assembly and improve the cleanliness and efficiency of the range hood.

[0025] Illustratively, when the inclination angle of the first mesh surface is set to 20-45°, within this angle range, the fumes can be effectively guided into the fan assembly, reducing airflow resistance and the need for redirection, improving the overall efficiency of the range hood. At the same time, within this angle range, the airflow has less turbulence and vortex phenomenon, thereby reducing operating noise and providing a quiet cooking environment for users.

[0026] In contrast, when the inclination angle of the first mesh surface is greater than 45°, the excessively large inclination angle of the first mesh surface can cause the fumes to need to travel a longer path before entering the fan assembly. This extended flow path can cause the fumes to spread more widely in the kitchen, reducing the immediate absorption effect of the range hood. Since the fumes need a longer time and path to reach the fan assembly, the range hood may not be able to quickly and effectively capture and exhaust the fumes, especially during high-intensity cooking, which can cause the fumes to accumulate in the kitchen.

[0027] In contrast, when the inclination angle of the first mesh surface is less than 20°, a smaller angle can cause the fumes to need more redirection before entering the fan assembly, increasing airflow resistance and the complexity of the airflow path. Due to the complexity of the airflow path and the increased possibility of turbulence, the operating noise of the range hood may increase, affecting the user's cooking experience. In addition, a smaller angle may not be conducive to effectively separating grease and particles using gravity, increasing the risk of grease entering the fan assembly.

[0028] In some embodiments of the present application, the extension direction of the first mesh surface is perpendicular to the axis of the impeller; along the axis of the impeller, the projection of the first mesh surface on the fan assembly covers the air inlet end of the fan assembly.

[0029] The above technical solution has the following advantages or beneficial effects: The design of the first mesh surface perpendicular to the axis of the impeller allows the fumes to be directly guided to the air inlet end of the fan assembly. This design reduces airflow redirection and resistance, ensuring that the fumes can be quickly and efficiently sucked in.

[0030] By ensuring that the projection of the first mesh surface on the fan assembly covers its air inlet end, the fumes can directly enter the fan assembly after passing through the oil mesh. This direct coverage design improves the overall smoke absorption efficiency of the range hood and reduces the spread of fumes in the kitchen.

[0031] In some embodiments of the present application, the oil mesh further includes a first side surface, and the first mesh surface and the first side surface are oppositely arranged along the thickness direction of the range hood.

[0032] The oil net further comprises a second mesh surface and a third mesh surface, which are oppositely arranged along the length direction of the range hood; the second mesh surface and the third mesh surface are arranged between the first mesh surface and the first side surface, the second mesh surface is used for connecting the first mesh surface and the first side surface, and the third mesh surface is used for connecting the first mesh surface and the first side surface.

[0033] The first mesh surface, the second mesh surface, the third mesh surface and the first side surface are sequentially connected to form a smoke guide cavity.

[0034] The above technical solution has the following advantages or beneficial effects: The first side surface is not provided with an opening, so that the first side surface is used for guiding the airflow containing oil fume, so that the oil fume is concentrated and flows to the first mesh surface and the fan assembly. This design helps to reduce the lateral diffusion of airflow and ensures that the oil fume is sucked into the fan assembly along the predetermined path.

[0035] By combining the first mesh surface, the second mesh surface, the third mesh surface and the first side surface, a closed smoke guide cavity is formed. This design can effectively guide the oil fume to flow to the fan assembly, ensure that the oil fume is sucked along the predetermined path, and reduce the diffusion in the kitchen. The design of the smoke guide cavity helps to effectively capture and separate oil before the oil fume enters the fan assembly. Through the optimized airflow path, the oil can flow into the oil tank under the action of gravity, reducing the pollution to the fan assembly.

[0036] The second mesh surface and the third mesh surface are used for connecting the first mesh surface and the first side surface, providing additional structural support. This design improves the stability and durability of the entire oil net structure, ensuring good performance in long-term use.

[0037] In some embodiments of the present application, along the length direction of the range hood, the second mesh surface is inclined relative to the end away from the fan assembly, away from the bottom side of the range hood.

[0038] Along the length direction of the range hood, the third mesh surface is inclined relative to the end away from the fan assembly, away from the bottom side of the range hood.

[0039] The above technical solution has the following advantages or beneficial effects: The second mesh surface and the third mesh surface are inclined relative to the end away from the fan assembly, away from the bottom side of the range hood. This inclined design helps to smoothly guide the oil fume to flow to the fan assembly, reduces the turbulence and resistance of the airflow, and improves the efficiency of the range hood.

[0040] The second mesh surface and the third mesh surface are inclined relative to the end away from the fan assembly, away from the bottom side of the range hood. This inclined design helps to smoothly guide the oil fume to flow to the fan assembly, reduces the turbulence and resistance of the airflow, and improves the efficiency of the range hood.

[0041] In some embodiments of the present application, the oil screen has an oil collecting portion arranged on the side of the oil screen away from the fan assembly; the portion of the oil collecting portion close to the bottom of the front side of the range hood is inclined relative to the portion close to the bottom of the rear side of the range hood, and the side of the oil collecting portion away from the bottom of the range hood is inclined.

[0042] The oil collecting portion has an oil collecting groove, and the groove opening of the oil collecting groove faces the top of the range hood.

[0043] The above technical solution has the following advantages or beneficial effects: By arranging the oil collecting portion on the side of the oil screen away from the fan assembly, such design enables the separated oil to quickly flow into the oil collecting portion, reducing the retention on the surface of the oil screen.

[0044] The inclined design of the oil collecting portion utilizes the effect of gravity to make the oil more easily flow into the oil collecting groove, enhancing the collection efficiency of the oil.

[0045] The groove opening of the oil collecting groove faces the top of the range hood, which ensures that the oil flows into the oil collecting groove under the effect of gravity without overflowing or backflowing. The upward design of the groove opening helps to prevent the oil from overflowing due to the influence of air flow during the operation of the range hood.

[0046] In some embodiments of the present application, the range hood further comprises a flow guide plate.

[0047] In the axial direction of the impeller, the flow guide plate is arranged between the first mesh surface and the fan assembly, and the extension direction of the flow guide plate is parallel to the extension direction of the first mesh surface.

[0048] The flow guide plate has a flow guide opening that communicates the smoke collecting cavity and the air inlet end of the fan assembly.

[0049] The flow guide opening is a circular arc-shaped flow guide opening.

[0050] The above technical solution has the following advantages or beneficial effects: The flow guide plate is arranged between the first mesh surface and the fan assembly in the axial direction of the impeller. This arrangement ensures that the flow guide plate can effectively guide the oil fume from the first mesh surface to the fan assembly. The extension direction of the flow guide plate is parallel to the extension direction of the first mesh surface. This parallel design helps to maintain the stability and consistency of the air flow, reducing the turbulence and unnecessary turning of the air flow.

[0051] The circular arc-shaped flow guide opening can smoothly guide the oil fume into the fan assembly, reducing the sudden turning and turbulence of the air flow. This design helps to reduce air resistance and turbulence in the air flow, thereby reducing operating noise and providing a quieter cooking environment for users.

[0052] In some embodiments of the present application, in the axial direction of the impeller, the vertical distance between the center point of the air inlet end of the fan assembly close to the oil screen side and the side of the smoke collecting hood close to the bottom of the range hood is L, and L satisfies: 140mm < L < 160mm.

[0053] The technical scheme has the following advantages or beneficial effects: the embodiment provided by the application reduces the vertical distance between the center point of the air inlet end of the fan assembly close to the oil screen and the side of the smoke hood close to the bottom of the range hood, reduces the airflow path, helps the airflow containing oil fume to be sucked into the fan assembly, and improves the suction capacity of the range hood.

[0054] In some embodiments of the application, the fan assembly further comprises a volute, and the impeller is arranged in the volute. The volute has a first tangent portion.

[0055] The first tangent portion is arranged close to the rear side of the range hood in the thickness direction of the range hood, and the first tangent portion abuts against the inner periphery of the body. The first tangent portion extends in the height direction of the range hood.

[0056] The technical scheme has the following advantages or beneficial effects: because the first tangent portion is arranged close to the rear side of the range hood and abuts against the inner periphery of the body, this design makes the volute easy to align and fix in the structure of the range hood, simplifying the installation process of the fan assembly. The close abutment of the first tangent portion and the inner periphery of the body provides additional support and stability, ensuring that the fan assembly can be firmly kept in place after installation, reducing vibration and displacement. By being arranged close to the rear side of the body, the first tangent portion helps to optimize the space utilization inside the range hood, making the overall design more compact and suitable for various kitchen layouts.

[0057] In some embodiments of the application, the volute has a second tangent portion. The second tangent portion is arranged on the side of the volute close to the oil screen in the height direction of the range hood. The second tangent portion abuts against the oil screen.

[0058] The technical scheme has the following advantages or beneficial effects: the second tangent portion provides a clear alignment reference, making it easier for installers to correctly dock the volute with the oil screen. This reduces alignment errors during installation and improves installation efficiency.

[0059] Through abutting against the oil screen, the second tangent portion provides additional support for the volute, enhancing the structural stability of the entire fan assembly. This helps to reduce vibration and noise during operation.

[0060] In some embodiments of the application, the range hood further comprises an oil cup. The oil cup is arranged in the smoke exhaust channel and is arranged close to the rear side of the range hood. The oil cup is in communication with the oil collecting portion.

[0061] The technical scheme has the following advantages or beneficial effects: the oil cup is in communication with the oil collecting portion, ensuring that the oil separated from the oil screen and other components can smoothly flow into the oil cup for collection. This design improves the collection efficiency of oil and reduces the accumulation of oil inside the range hood.

[0062] The oil cup is located close to the rear side of the range hood, and is usually more easily accessible and detachable. The user can conveniently take out the oil cup for cleaning and maintenance, keeping the range hood clean and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0064] Figure 1 Structure diagram of the range hood in the related art;

[0065] Figure 2 Structure diagram of the range hood in the related art;

[0066] Figure 3 Structure diagram of the range hood provided by the embodiments of the present application Figure 1 ;

[0067] Figure 4 Structure diagram of the range hood provided by the embodiments of the present application Figure 2 ;

[0068] Figure 5 Structure diagram of the range hood provided by the embodiments of the present application Figure 3 ;

[0069] Figure 6 Structure diagram of the range hood provided by the embodiments of the present application Figure 4 ;

[0070] Figure 7 Structure diagram of the range hood provided by the embodiments of the present application Figure 5 ;

[0071] Figure 8 Structure diagram of the range hood provided by the embodiments of the present application Figure 1 ;

[0072] Figure 9 Structure diagram of the range hood provided by the embodiments of the present application Figure 2 ;

[0073] Figure 10 Structure diagram of the oil screen of the range hood provided by the embodiments of the present application from the first perspective;

[0074] Figure 11A structural schematic view of a second perspective of an oil screen of the range hood according to an embodiment of the present application is provided.

[0075] Figure 12 A structural schematic view of a third perspective of an oil screen of the range hood according to an embodiment of the present application is provided.

[0076] Figure 13 A structural schematic view of a first perspective of a deflector of the range hood according to an embodiment of the present application is provided.

[0077] Figure 14 A structural schematic view of a second perspective of a deflector of the range hood according to an embodiment of the present application is provided.

[0078] Figure 15 A structural schematic view of a fan assembly of the range hood according to an embodiment of the present application is provided.

[0079] Legend of reference signs:

[0080] 10: range hood; 20: negative pressure area;

[0081] 100: machine body; 110: smoke inlet; 120: machine frame component; 130: decorative cover; 140: smoke outlet;

[0082] 200: fan assembly; 210: impeller; 220: volute; 230: first tangential portion; 240: second tangential portion; 250: motor; 260: deflector; 270: air outlet cover;

[0083] 300: smoke collection cover; 310: smoke collection cavity;

[0084] 400: oil screen; 410: first screen surface; 420: first side surface; 430: second screen surface; 440: third screen surface; 450: smoke guide cavity; 460: oil collection portion;

[0085] 500: deflector; 510: circular arc-shaped deflector opening;

[0086] 600: oil cup. DETAILED DESCRIPTION

[0087] In the related art, as shown in FIGS. 1 and 2, a machine frame component of a range hood is internally formed with a negative pressure area, as shown by the dashed line box in FIG. 1. As shown by the black solid arrow in FIG. 2, after oil fume enters the negative pressure area of the machine frame component of the range hood, the oil fume needs to be turned before entering an air inlet of a fan assembly of the range hood. Figure 1 and Figure 2 As shown in FIGS. 1 and 2, a machine frame component of a range hood is internally formed with a negative pressure area, as shown by the dashed line box in FIG. 1. As shown by the black solid arrow in FIG. 2, after oil fume enters the negative pressure area of the machine frame component of the range hood, the oil fume needs to be turned before entering an air inlet of a fan assembly of the range hood. Figure 2 As shown by the black solid arrow in FIG. 2, after oil fume enters the negative pressure area of the machine frame component of the range hood, the oil fume needs to be turned before entering an air inlet of a fan assembly of the range hood. Figure 2 As shown by the black solid arrow in FIG. 2, after oil fume enters the negative pressure area of the machine frame component of the range hood, the oil fume needs to be turned before entering an air inlet of a fan assembly of the range hood.

[0088] However, cooking fumes need to be redirected within the negative pressure zone, which can increase flow resistance and reduce the efficiency of fume extraction. Increased flow resistance may prevent some fumes from being extracted in time, causing them to diffuse into the kitchen environment. The redirection process can also create eddies or backflow, leading to fumes lingering in the negative pressure zone and increasing their residence time inside the frame, thus affecting the overall extraction efficiency of the range hood.

[0089] Therefore, existing range hoods have the problem of poor smoke extraction.

[0090] Therefore, this application provides a range hood. The range hood includes a body, a fan assembly, a smoke collection hood, and an oil filter. The body forms a smoke exhaust channel; the body has a smoke inlet located near the bottom of the body, and the smoke inlet communicates with the smoke exhaust channel. The fan assembly is located in the smoke exhaust channel; the fan assembly is inclined relative to the plane where the smoke inlet is located. The fan assembly includes an impeller. The smoke collection hood is located at the bottom of the body. The smoke collection hood forms a smoke collection chamber, which communicates with the smoke inlet. A portion of the oil filter is located in the smoke collection chamber; the oil filter forms a smoke guiding chamber; the smoke guiding chamber communicates with the smoke collection chamber and the smoke exhaust channel; the oil filter includes a first mesh surface. The first mesh surface is inclined relative to the plane where the smoke inlet is located; along the axis of the impeller, the first mesh surface and the air inlet end of the fan assembly are positioned opposite each other.

[0091] By tilting the fan assembly relative to the plane of the smoke inlet, the air inlet end of the fan assembly is tilted downwards and faces the smoke inlet. Compared to range hoods in related technologies where the air inlet end of the fan assembly and the plane of the smoke inlet are vertically arranged, the range hood provided in this application allows the fumes generated in the cooking area to enter the air inlet end of the fan assembly without needing to be turned. The fumes can enter the air inlet end of the fan assembly along a direct path, reducing the need for airflow to be turned before entering the fan assembly. This direct airflow path reduces flow resistance and improves the suction efficiency of the range hood.

[0092] By tilting the first mesh surface relative to the plane of the smoke inlet, this tilted design allows the fumes to flow along a natural path, reducing the deflection and resistance before they enter the fan assembly. This reduction in deflection and resistance improves the range hood's suction efficiency. As the fumes pass through the first mesh surface, they are guided to the fan assembly's intake end. This optimized airflow direction reduces turbulence and eddies, resulting in smoother and more efficient airflow. Reduced turbulence and eddies also help lower the range hood's operating noise, providing a quieter operating environment.

[0093] Meanwhile, the inclined mesh surface design can utilize gravity to help separate oil and particulate matter in the oil fumes. The oil is more likely to gather on the inclined surface and flow into the oil groove, thereby improving the oil separation efficiency and reducing the risk of oil entering the fan assembly.

[0094] For the purpose of making the purposes, embodiments and advantages of the present application clearer, the following will combine the drawings in the exemplary embodiments of the present application to clearly and completely describe the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0095] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0096] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device including a series of components does not have to be limited to the clearly listed components, but can include other components that are not clearly listed or inherent to these products or devices.

[0097] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0098] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0099] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0100] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0101] The present application provides a kind of range hood, refer to Figures 3 to 7 Fig. 1, range hood includes body 100, fan assembly 200, fume hood 300, oil screen 400.The height direction of range hood refers to the direction shown in Figure 3 Fig. 1 Z.Range hood length direction refers to the direction shown in Figure 3 Fig. 1 X.Range hood thickness direction refers to the direction shown in Figure 7 Fig. 1 Y.

[0102] Body 100 is formed with flue passage;Body 100 has smoke inlet 110, smoke inlet 110 is arranged at the bottom of body 100, and smoke inlet 110 and flue passage are communicated.Body 100 also has smoke outlet 140.Oil fume is smoothly discharged through smoke inlet 110, flue passage, smoke outlet 140.

[0103] Refer to Figure 8 Fig. 1 and Figure 9 Fig. 2, body 100 includes rack component 120 and decorative cover 130.Rack component 120 includes coaming, bottom plate, top plate.In the height direction of range hood, top plate and bottom plate are oppositely arranged.Coaming is surrounded between top plate and bottom plate.Coaming is used to connect top plate and bottom plate.Coaming, bottom plate and top plate are surrounded to form mounting area.Part of mounting area is outwardly convex close to one side for increasing the internal space of range hood.Decorative cover 130 is covered on the outer periphery of mounting area.

[0104] Among them, the bottom plate of body 100 is formed with smoke inlet 110.That is to say, the plane where smoke inlet 110 is located is the plate surface of bottom plate.

[0105] Fan assembly 200 is arranged in flue passage;Fan assembly 200 is arranged obliquely relative to the plane where smoke inlet 110 is located.Fan assembly 200 includes impeller 210.When impeller 210 rotates, low pressure area is formed around it, which helps to suck oil fume and air in kitchen into smoke inlet 110 of range hood.

[0106] Fume hood 300 is arranged at the bottom of body 100.Fume hood 300 is formed with fume collecting cavity 310, and fume collecting cavity 310 is communicated with smoke inlet 110.Fume hood 300 is arranged at the bottom of body 100, above cooking area.Fume hood 300 covers cooking surface, so as to quickly collect oil fume and steam when they are generated.

[0107] Part of the oil screen 400 is arranged in the smoke collecting cavity 310; the oil screen 400 is formed with a smoke guide cavity 450; the oil screen 400 is used to capture and separate oil and solid particles in the oil fume, which helps to prevent these substances from entering the fan assembly 200 and the smoke exhaust passage, thereby reducing the risk of accumulation and blockage. The smoke guide cavity 450 communicates the smoke collecting cavity 310 and the smoke exhaust passage; the oil screen 400 includes a first screen surface 410. The first screen surface 410 is arranged obliquely relative to the plane in which the smoke inlet 110 is located; along the axial direction of the impeller 210, the first screen surface 410 is arranged opposite to the air inlet end of the fan assembly 200.

[0108] Exemplarily, the oil fume generated during cooking is first captured by the smoke collecting hood 300 and enters the smoke collecting cavity 310. The smoke collecting hood 300 is designed to generally cover the cooking area to maximize the collection of rising oil fume and prevent it from spreading into the kitchen environment. The oil fume entering the smoke collecting cavity 310 then passes through the oil screen 400. The oil screen 400 functions to capture and separate oil and particulate matter in the oil fume, preventing these substances from entering the fan assembly 200. The smoke guide cavity 450 formed by the oil screen 400 guides the flow of oil fume to the air inlet end of the fan assembly 200. The oil fume filtered by the oil screen 400 enters the air inlet end of the fan assembly 200. The fan assembly 200 includes an impeller 210 that generates negative pressure by rotating to further draw in the oil fume. Finally, the fan assembly 200 exhausts the oil fume through the smoke exhaust passage to the outside. The design of the smoke exhaust passage ensures that the oil fume can be quickly and effectively exhausted, keeping the kitchen air clean.

[0109] By arranging the fan assembly 200 obliquely relative to the plane in which the smoke inlet 110 is located, the air inlet end of the fan assembly 200 is inclined downward, and the air inlet end of the fan assembly 200 faces the smoke inlet 110. Compared with the range hood in the related art, the air inlet end of the fan assembly 200 is vertically arranged relative to the plane in which the smoke inlet 110 is located. The range hood provided by the present application does not require the oil fume generated in the cooking area to be diverted to enter the air inlet end of the fan assembly 200. The oil fume can enter the air inlet end of the fan assembly 200 along a direct path, reducing the need for airflow to be diverted before entering the fan assembly 200. This direct airflow path reduces flow resistance and improves the suction efficiency of the range hood.

[0110] At the same time, by arranging the fan assembly 200 obliquely relative to the plane in which the smoke inlet 110 is located, the flow path of the oil fume is changed, and the fan assembly 200 can achieve the same suction force at a lower power, thereby reducing energy consumption and improving the use performance of the range hood.

[0111] In addition, by arranging the fan assembly 200 obliquely relative to the plane in which the smoke inlet 110 is located, the airflow diversion and turbulence phenomenon of the range hood suction are reduced, which helps to smooth airflow flow, thereby reducing the noise caused by airflow disturbance.

[0112] Further, the first mesh surface 410 is arranged opposite to the air inlet end of the fan assembly 200 along the axial direction of the impeller 210. By arranging the first mesh surface 410 opposite to the air inlet end of the fan assembly 200, it is ensured that the oil fume can directly enter the air inlet end of the fan assembly 200 through the oil screen 400. This direct path reduces the redirection and resistance of the airflow, ensuring that the oil fume can be highly and quickly sucked in.

[0113] The first mesh surface 410 is arranged obliquely relative to the plane in which the smoke inlet 110 is located. The oblique design of the first mesh surface 410 allows the oil fume to flow along a natural path, reducing the redirection and resistance of the oil fume before entering the fan assembly 200. By reducing the redirection and resistance of the oil fume flow path, this arrangement helps to improve the suction efficiency of the range hood. By obliquely arranging the first mesh surface 410, the oil fume can be guided to the air inlet end of the fan assembly 200 when passing through the first mesh surface 410. This optimized airflow direction reduces turbulence and vortex phenomena, making the airflow flow more smoothly and efficiently, and reducing the operating noise of the range hood, providing a quieter operating environment.

[0114] At the same time, the oblique mesh surface design can utilize gravity to help separate oil and particulate matter in the oil fume. Oil is more likely to accumulate on the inclined surface and flow into the oil tank, thereby improving oil separation efficiency and reducing the risk of oil entering the fan assembly 200.

[0115] As an implementable embodiment, referring to Figure 7 , the fan assembly 200 is inclined away from the bottom side of the range hood near the front side of the range hood relative to the bottom side near the rear side of the range hood. That is, the fan assembly 200 is inclined away from the bottom side of the range hood near the user relative to the bottom side away from the user. In this way, the oil fume near the user can be quickly sucked into the fan assembly 200, and this direct path reduces the spread of the oil fume in the kitchen, improving the smoke suction efficiency. At the same time, the obliquely arranged fan assembly 200 helps to guide the oil fume to enter the fan assembly 200 along a more direct path, which reduces the resistance and redirection requirements of the airflow, allowing the oil fume to enter the fan assembly 200 more smoothly and improving the overall performance of the range hood.

[0116] As an implementable embodiment, referring to Figure 10 and Figure 11 , the oil screen 400 is recessed towards the side near the fan assembly 200 to form a smoke guiding cavity 450; and the oil screen 400 forms a first mesh surface 410 towards the side of the air inlet end of the fan assembly 200.

[0117] Exemplarily, the concave smoke guide cavity 450 is designed to help guide the flow of oil fume towards the air inlet end of the fan assembly 200. The smoke guide cavity 450 forms a channel to facilitate the smooth flow of oil fume, reducing flow resistance and the need for redirection. By optimizing the flow path of oil fume, the range hood can capture and exhaust oil fume more efficiently. This design ensures higher smoke suction efficiency and reduces the spread of oil fume in the kitchen.

[0118] As an implementable embodiment, the first mesh surface 410 forms a first end of the first mesh surface 410 near one end of the front side of the range hood; the first mesh surface 410 forms a second end of the first mesh surface 410 near one end of the rear side of the range hood.

[0119] The angle between the second end of the first mesh surface 410 to the first end of the first mesh surface 410 and the thickness direction of the range hood is A, A satisfies: 20°<A<45°.

[0120] Exemplarily, by setting the inclination angle of the first mesh surface 410 to 20-45°, the first mesh surface 410 can effectively guide the flow of oil fume to the fan assembly 200. This inclined first mesh surface 410 helps to reduce resistance and redirection in the flow path of oil fume, so that the resistance in the flow path of the airflow containing oil fume is reduced, the range hood can capture and exhaust oil fume more efficiently, reduce the spread of oil fume in the kitchen, and improve the overall smoke suction effect. The inclined first mesh surface 410 reduces the redirection in the airflow flow, reduces the turbulence and vortex phenomenon in the airflow, thereby reducing the operating noise of the range hood, providing a quieter operating environment for the user.

[0121] The inclined first mesh surface 410 design takes advantage of gravity to help oil and particulate matter separate more easily from the oil fume and flow into the oil tank. This can reduce the risk of oil entering the fan assembly 200 and improve the cleanliness and efficiency of the range hood.

[0122] Exemplarily, when the inclination angle of the first mesh surface 410 is set to 20-45°, within this angle range, oil fume can be effectively guided into the fan assembly 200, reducing the resistance and redirection requirements of the airflow, improving the overall efficiency of the range hood. At the same time, within this angle range, the turbulence and vortex phenomenon of the airflow is less, thereby reducing the operating noise and providing a quiet cooking environment for the user.

[0123] In contrast, when the inclination angle of the first mesh surface 410 is greater than 45°, the excessively large inclination angle of the first mesh surface 410 can cause the oil fume to need to pass a longer path before entering the fan assembly 200. This extended flow path can cause the oil fume to spread more widely in the kitchen, reducing the immediate absorption effect of the range hood. Since the oil fume needs a longer time and path to reach the fan assembly 200, the range hood can not be able to quickly and effectively capture and discharge the oil fume, especially during high-intensity cooking, which can cause the oil fume to accumulate in the kitchen.

[0124] In contrast, when the inclination angle of the first mesh surface 410 is less than 20°, the smaller angle can cause the oil fume to need more turning before entering the fan assembly 200, increasing the resistance of the airflow and the complexity of the airflow path. Due to the complexity of the airflow path and the increase in possible turbulence, the operating noise of the range hood can increase, affecting the cooking experience of the user. In addition, the smaller angle can not be conducive to effectively separating grease and particulate matter using gravity, increasing the risk of grease entering the fan assembly 200.

[0125] Illustratively, A satisfies: 20° < A ≤ 30°. Alternatively, A satisfies 30° ≤ A < 45°. Alternatively, A satisfies 25° ≤ A ≤ 35°. Alternatively, A can be 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°.

[0126] Illustratively, A can be 21.5°, 22.5°, 23.5°, 24.5°, 25.5°, 26.5°, 27.5°, 28.5°, 29.5°, 30.5°.

[0127] As an implementable embodiment, the vertical distance between the center point of the side of the fan assembly 200 near the oil net 400 and the side of the smoke collecting hood 300 near the bottom of the range hood along the axial direction of the impeller 210 is L, and L satisfies: 140mm < L < 160mm.

[0128] Illustratively, compared to the related art, the vertical distance between the axial line of the impeller 210 and the side of the smoke collecting hood 300 near the bottom of the range hood is about 300mm. The embodiments provided by the present application reduce the vertical distance between the center point of the side of the fan assembly 200 near the oil net 400 and the side of the smoke collecting hood 300 near the bottom of the range hood by tilting the fan assembly 200, reduce the flow path of the airflow, and help the airflow containing oil fume to be sucked into the fan assembly 200, improving the suction capacity of the range hood.

[0129] As an implementable embodiment, the extension direction of the first mesh surface 410 is perpendicular to the axis of the impeller 210; along the axis direction of the impeller 210, the projection of the first mesh surface 410 on the fan assembly 200 covers the air inlet end of the fan assembly 200.

[0130] Illustratively, the design of the first mesh surface 410 perpendicular to the axis of the impeller 210 allows the oil fume to be directly guided to the air inlet end of the fan assembly 200. This design reduces the deflection and resistance of the airflow, ensuring that the oil fume can be quickly and efficiently sucked in.

[0131] By ensuring that the projection of the first mesh surface 410 on the fan assembly 200 covers its air inlet end, the oil fume can directly enter the fan assembly 200 after passing through the oil screen 400. This direct coverage design improves the overall smoke suction efficiency of the range hood, reducing the spread of oil fume in the kitchen.

[0132] As an implementable embodiment, referring to Figures 10 to 12 The oil screen 400 also includes a first side surface 420, which is oppositely arranged with the first mesh surface 410 along the thickness direction of the range hood.

[0133] The oil screen 400 also includes a second mesh surface 430 and a third mesh surface 440, which are oppositely arranged along the length direction of the range hood; the second mesh surface 430 and the third mesh surface 440 are arranged between the first mesh surface 410 and the first side surface 420, the second mesh surface 430 is used to connect the first mesh surface 410 and the first side surface 420; the third mesh surface 440 is used to connect the first mesh surface 410 and the first side surface 420.

[0134] The first mesh surface 410, the second mesh surface 430, the third mesh surface 440, and the first side surface 420 are sequentially connected to form a smoke guide cavity 450.

[0135] Illustratively, the first side surface 420 is not provided with an opening, so that the first side surface 420 is used to guide the airflow containing oil fume, so that the oil fume is concentrated to flow to the first mesh surface 410 and the fan assembly 200. This design helps to reduce the lateral diffusion of airflow, ensuring that the oil fume is sucked into the fan assembly 200 along the predetermined path.

[0136] By combining the first mesh surface 410, the second mesh surface 430, the third mesh surface 440, and the first side surface 420, a closed smoke guide cavity 450 is formed. This design can effectively guide the oil fume to the fan assembly 200, ensuring that the oil fume is sucked along the predetermined path and reducing the spread in the kitchen. The design of the smoke guide cavity 450 helps to effectively capture and separate oil before the oil fume enters the fan assembly 200. Through the optimized airflow path, the oil can flow into the oil tank under the action of gravity, reducing the pollution to the fan assembly 200.

[0137] The second mesh surface 430 and the third mesh surface 440 are used to connect the first mesh surface 410 and the first side surface 420, providing additional structural support. This design improves the stability and durability of the entire oil screen 400 structure, ensuring good performance over a long period of use.

[0138] As an implementable embodiment, along the length direction of the range hood, the second mesh surface 430 is inclined relative to the end away from the fan assembly 200, away from the bottom side of the range hood, near the end close to the fan assembly 200.

[0139] Along the length direction of the range hood, the third mesh surface 440 is inclined relative to the end away from the fan assembly 200, away from the bottom side of the range hood, near the end close to the fan assembly 200.

[0140] Illustratively, the second mesh surface 430 and the third mesh surface 440 are inclined relative to the end away from the fan assembly 200, away from the bottom side of the range hood, near the end close to the fan assembly 200. This inclined design helps to smoothly guide the oil fume to flow towards the fan assembly 200, reducing turbulence and resistance of airflow, and improving the efficiency of the range hood.

[0141] The second mesh surface 430 and the third mesh surface 440 inclinedly arranged can utilize the effect of gravity, so that the oil is more easily separated from the oil fume and flows.

[0142] Illustratively, the oil screen 400 of the range hood provided by the embodiments of the present application is conical, and the smoke guide cavity 450 formed by the oil screen 400 is used to guide the oil fume. The side of the smoke guide cavity 450 away from the fan assembly 200 forms a negative pressure surface. Compared with the related art, the smoke guide cavity 450 provided by the embodiments of the present application effectively increases the area of the negative pressure surface.

[0143] As an implementable embodiment, the oil screen 400 has an oil collecting portion 460, which is arranged on the side of the oil screen 400 away from the fan assembly 200. The part of the oil collecting portion 460 close to the bottom of the front side surface of the range hood is inclined relative to the part close to the bottom of the rear side surface of the range hood, away from the bottom of the range hood.

[0144] The oil collecting portion 460 has an oil collecting groove, and the groove opening of the oil collecting groove faces the top of the range hood.

[0145] As an implementable embodiment, the range hood further comprises an oil cup 600, which is arranged in the smoke exhaust channel. The oil cup 600 is arranged close to the rear side surface of the range hood. The oil cup 600 and the oil collecting portion 460 are in communication.

[0146] Exemplarily, by setting the oil collection part 460 on the side of the oil net 400 facing away from the fan assembly 200, such design enables the oil to quickly flow into the oil collection part 460 after being separated, reducing the retention on the surface of the oil net 400.

[0147] The inclined design of the oil collection part 460 utilizes the effect of gravity to make the oil more easily flow into the oil collection groove, enhancing the collection efficiency of the oil.

[0148] The slot of the oil collection groove faces the top of the range hood, which ensures that the oil flows into the oil collection groove under the action of gravity without overflowing or backflowing. The upward-facing design of the slot helps to prevent the oil from overflowing due to the influence of air flow during the operation of the range hood.

[0149] Exemplarily, the oil cup 600 communicates with the oil collection part 460, ensuring that the oil separated from the oil net 400 and other components can smoothly flow into the oil cup 600 for collection. This design improves the collection efficiency of the oil and reduces the accumulation of oil inside the range hood.

[0150] The oil cup 600 is located near the rear side of the range hood, which is usually more easily accessible and detachable. Users can conveniently remove the oil cup 600 for cleaning and maintenance, maintaining the cleanliness and efficient operation of the range hood.

[0151] As an implementable embodiment, referring to Figure 13 and Figure 14 , the range hood further comprises a flow guide plate 500.

[0152] Along the axial direction of the impeller 210, the flow guide plate 500 is arranged between the first mesh surface 410 and the fan assembly 200, and the extension direction of the flow guide plate 500 is parallel to the extension direction of the first mesh surface 410.

[0153] The flow guide plate 500 has a flow guide opening that communicates the smoke guide cavity 450 and the air inlet end of the fan assembly 200.

[0154] Exemplarily, the flow guide plate 500 is arranged between the first mesh surface 410 and the fan assembly 200 along the axial direction of the impeller 210. This arrangement ensures that the flow guide plate 500 can effectively guide the oil fume to flow from the first mesh surface 410 to the fan assembly 200. The extension direction of the flow guide plate 500 is parallel to the extension direction of the first mesh surface 410. This parallel design helps to maintain the stability and consistency of the airflow, reducing the turbulence and unnecessary turning of the airflow.

[0155] The flow guide plate 500 has a flow guide opening that communicates the smoke guide cavity 450 and the air inlet end of the fan assembly 200. This design ensures that the oil fume can smoothly flow from the smoke guide cavity 450 into the fan assembly 200, optimizing the airflow path.

[0156] As an implementable embodiment, the guide opening is a circular arc guide opening 510.

[0157] Exemplarily, the circular arc guide opening 510 can smoothly guide the oil fume into the fan assembly 200, reducing the sudden turning and turbulence of the airflow. This design helps to reduce airflow resistance and reduce turbulence in the airflow, thereby reducing operating noise and providing a quieter cooking environment for users.

[0158] The circular arc shape is generally stronger and more stable than a right angle or acute angle structure, and can better withstand the pressure of the airflow and wear during long-term use.

[0159] As an implementable embodiment, referring to Figure 15 As shown in the figure, the fan assembly 200 further includes a volute 220, the impeller 210 is arranged in the volute 220, and the volute 220 has a first tangent portion 230.

[0160] Along the thickness direction of the range hood, the first tangent portion 230 is arranged close to the rear side of the range hood, and the first tangent portion 230 and the inner periphery of the body 100 abut; the first tangent portion 230 extends along the height direction of the range hood. The first tangent portion 230 has a first tangent surface. The first tangent portion 230 can be a tangent plate. The first tangent surface is the surface of the tangent plate.

[0161] Exemplarily, since the first tangent portion 230 is arranged close to the rear side of the range hood and abuts the inner periphery of the body 100, this design makes the volute 220 can be easily aligned and fixed in the structure of the range hood, simplifying the installation process of the fan assembly 200. The close abutment of the first tangent portion 230 and the inner periphery of the body 100 provides additional support and stability, ensuring that the fan assembly 200 can be firmly maintained in the proper position after installation, reducing vibration and displacement. By arranging the first tangent portion 230 close to the rear side of the body 100, it helps to optimize the space utilization inside the range hood, making the overall design more compact and suitable for various kitchen layouts.

[0162] Exemplarily, the volute 220 includes a volute bottom plate, a volute top plate, and a volute surrounding plate. The volute bottom plate and the volute top plate are arranged opposite to each other along the height direction of the range hood. The volute surrounding plate is used to connect the volute top plate and the volute bottom plate. The volute bottom plate, the volute top plate, and the volute surrounding plate surround to form a volute mounting interval.

[0163] The fan assembly 200 further includes a motor 250, a flow guide disc 260, and an air outlet cover 270. The motor 250 is the core power source of the fan assembly, which drives the impeller 210 to rotate to generate suction force to extract oil fume and air from the kitchen. The flow guide disc 260 is used to divert the oil fume flowing out of the volute 220. The air outlet cover 270 is used to guide the oil fume to exit the range hood.

[0164] As an implementable embodiment, the volute 220 has a second tangent portion 240; along the height direction of the range hood, the second tangent portion 240 is arranged on the side of the volute 220 close to the oil screen 400; the second tangent portion 240 and the oil screen 400 abut.

[0165] Exemplarily, the second tangent portion 240 provides an explicit alignment reference, which enables the installer to more easily correctly dock the volute 220 with the oil screen 400. This reduces the alignment error in the installation process and improves the installation efficiency.

[0166] Through the abutment with the oil screen 400, the second tangent portion 240 provides additional support for the volute 220, enhancing the structural stability of the entire fan assembly 200. This helps to reduce vibration and noise during operation. Among them, the second tangent portion 240 can be a tangent plate. The tangent plate has a tangent surface.

[0167] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0168] In order to facilitate explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained according to the above teachings. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A range hood characterized by, The application relates to a range hood, which comprises: a machine body (100) formed with a smoke exhaust channel; the machine body (100) is provided with a smoke inlet (110) arranged at the bottom of the machine body (100), and the smoke inlet (110) is communicated with the smoke exhaust channel; a fan assembly (200) arranged in the smoke exhaust channel; the fan assembly (200) is arranged obliquely relative to the plane where the smoke inlet (110) is located; the fan assembly (200) comprises an impeller (210); a smoke collecting cover (300) arranged at the bottom of the machine body (100); the smoke collecting cover (300) is formed with a smoke collecting cavity (310) communicated with the smoke inlet (110); an oil screen (400); part of the oil screen (400) is arranged in the smoke collecting cavity (310); the oil screen (400) is formed with a smoke guide cavity (450); the smoke guide cavity (450) is communicated with the smoke collecting cavity (310) and the smoke exhaust channel; the oil screen (400) comprises: a first screen surface (410); the first screen surface (410) is arranged obliquely relative to the plane where the smoke inlet (110) is located; along the axial line direction of the impeller (210), the first screen surface (410) is arranged opposite to the air inlet end of the fan assembly (200).

2. The hood according to claim 1, characterized in that, The fan assembly (200) is arranged close to the bottom of the front side of the range hood, and is arranged obliquely away from the bottom side of the range hood relative to the bottom side close to the rear side of the range hood.

3. The hood according to claim 1, characterized in that, The oil screen (400) is concave towards the side close to the fan assembly (200) to form the smoke guide cavity (450); the oil screen (400) is formed with the first screen surface (410) on the side towards the air inlet end of the fan assembly (200).

4. The hood according to claim 1, characterized in that, The first screen surface (410) is formed with a first end of the first screen surface (410) close to one end of the front side of the range hood; the first screen surface (410) is formed with a second end of the first screen surface (410) close to one end of the rear side of the range hood; The included angle between the second end of the first screen surface (410) and the first end of the first screen surface (410) and the thickness direction of the range hood is A, and the A satisfies 20 DEG < A < 45 DEG.

5. The hood according to claim 2, characterized in that, The extension direction of the first screen surface (410) is perpendicular to the axial line of the impeller (210); along the axial line direction of the impeller (210), the projection of the first screen surface (410) on the fan assembly (200) covers the air inlet end of the fan assembly (200).

6. The hood according to any one of claims 1-5, characterized in that, The oil screen (400) further comprises a first side surface (420); along the thickness direction of the range hood, the first screen surface (410) and the first side surface (420) are arranged opposite to each other. The oil screen (400) further comprises a second screen surface (430) and a third screen surface (440), which are oppositely arranged along the length direction of the range hood; the second screen surface (430) and the third screen surface (440) are arranged between the first screen surface (410) and the first side surface (420), the second screen surface (430) is used for connecting the first screen surface (410) and the first side surface (420), and the third screen surface (440) is used for connecting the first screen surface (410) and the first side surface (420). The first screen surface (410), the second screen surface (430), the third screen surface (440) and the first side surface (420) are sequentially connected to form the smoke guide cavity (450).

7. The hood according to claim 6, characterized in that Along the length direction of the range hood, one end of the second screen surface (430) close to the fan assembly (200) is inclined away from the bottom side of the range hood relative to the other end away from the fan assembly (200). Along the length direction of the range hood, one end of the third screen surface (440) close to the fan assembly (200) is inclined away from the bottom side of the range hood relative to the other end away from the fan assembly (200).

8. The hood according to any one of claims 1-5, characterized in that, The oil screen (400) has an oil collecting part (460) arranged on the side away from the fan assembly (200) of the oil screen (400); the part close to the bottom of the front side of the range hood of the oil collecting part (460) is inclined away from the bottom side of the range hood relative to the part close to the bottom of the rear side of the range hood. The oil collecting part (460) has an oil collecting groove, and the groove opening of the oil collecting groove faces the top of the range hood.

9. The hood according to any one of claims 1-5, characterized in that, Further comprising a flow guide plate (500); Along the axial direction of the impeller (210), the flow guide plate (500) is arranged between the first screen surface (410) and the fan assembly (200), and the extension direction of the flow guide plate (500) is parallel to the extension direction of the first screen surface (410); The flow guide plate (500) has a circular arc flow guide opening (510) connecting the smoke guide cavity (450) and the air inlet end of the fan assembly (200).

10. The hood according to any one of claims 1-5, characterized in that, Along the axial direction of the impeller (210), the vertical distance between the center point of the air inlet end of the fan assembly (200) close to the oil screen (400) side and the side close to the bottom of the smoke collecting hood (300) is L, and the L satisfies: 140mm < L < 160mm.

11. The hood according to any one of claims 1-5, characterized in that, The fan assembly (200) further comprises a volute (220), and the impeller (210) is arranged in the volute (220); the volute (220) has a first tangent part (230). The first tangent part (230) is arranged close to the back side of the range hood along the thickness direction of the range hood, and the first tangent part (230) and the inner periphery of the machine body (100) are in abutment; the first tangent part (230) extends along the height direction of the range hood.

12. The hood according to claim 11, characterized in that, The volute (220) has a second tangent part (240); along the height direction of the range hood, the second tangent part (240) is arranged on the side of the volute (220) close to the oil screen (400); the second tangent part (240) and the oil screen (400) are in abutment.

13. The hood according to claim 8, characterized in that, Further comprising an oil cup (600), the oil cup (600) is arranged in the smoke exhaust channel, and the oil cup (600) is arranged close to the back side of the range hood; the oil cup (600) and the oil collecting part (460) are in communication.

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