CN218820575U

CN218820575U - Lampblack absorber oil guide structure and lampblack absorber

Info

Publication number: CN218820575U
Application number: CN202223110384.1U
Authority: CN
Inventors: 任富佳; 李智宝; 于巍巍; 董豪炳; 翟春丰; 黄文才
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-07
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to a kitchen appliance technical field discloses a lampblack absorber leads oily structure and lampblack absorber, include the connecting plate and lead oily part. The connecting plate is connected between the upper shell and the lower shell of the range hood and located below the fan volute, and a ventilation opening for communicating the upper shell and the lower shell is formed in the connecting plate. The oil guide component is arranged below the connecting plate and provided with an oil guide groove, and the inner cavity of the fan volute and the inner cavity of the lower shell are communicated with the oil guide groove. The oil-water mixture that produces in the fan spiral case can constantly flow into and lead in the oil groove to in leading the oil groove and flowing into the lower casing, finally collect to the oil cup of lower casing below, avoid fluid to drip to the external pollution kitchen, make things convenient for the later stage clearance. The oil guide component enables an oil-water mixture in the fan volute to be discharged into the oil cup in time, a large amount of oil stains are prevented from being accumulated in the fan volute, the working resistance of the impeller in the fan volute is reduced, the smoke exhaust effect is improved, and the user experience is good.

Description

Lampblack absorber oil guide structure and lampblack absorber

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a lampblack absorber leads oily structure and lampblack absorber.

Background

The range hood is a kitchen appliance for purifying the kitchen environment, can rapidly pump away waste generated by burning of a stove and oil smoke generated by cooking, discharges the waste and the oil smoke to the outside, purifies the air in a kitchen, and can condense and collect the oil smoke to reduce pollution to the outside atmosphere.

The existing range hood can generate oil stains in the fan volute in the use process, the oil stains in the fan volute can be accumulated after long-time use, resistance is generated to the operation of the fan, the smoke exhaust capacity of the range hood is reduced, and the kitchen oil smoke cannot be exhausted cleanly. In addition, oil in the volute of the fan is easy to drip to the outside of the range hood, so that a kitchen is polluted, and later cleaning is troublesome.

Therefore, an oil guiding structure of a range hood and a range hood are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model aims to provide an oily structure and lampblack absorber are led to lampblack absorber can rationally collect the fluid that produces in the lampblack absorber fan spiral case, makes things convenient for the later stage clearance, improves the lampblack absorber smoke exhaust effect, and the user uses to experience to feel good.

In order to achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, an oil guide structure of a range hood is provided, including:

the connecting plate is connected between the upper shell and the lower shell of the range hood and positioned below the volute of the fan, and a vent for communicating the upper shell and the lower shell is arranged on the connecting plate;

lead the oil part, lead the oil part set up in the below of connecting plate, lead the oil part and have and lead the oil groove, the inner chamber of fan spiral case with the inner chamber of casing all with lead the oil groove intercommunication down, fluid in the fan spiral case can via lead the oil groove and flow in the inferior valve is internal.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, be provided with on the connecting plate with lead the relative first through-hole of oil groove, the bottom of fan spiral case seted up with the relative second through-hole of first through-hole, fluid in the fan spiral case via in proper order the second through-hole first through-hole with lead the oil groove inflow in the inferior valve is internal.

As the utility model discloses an oil structure's preferred scheme is led to lampblack absorber, fan spiral case orientation the one end of casing is provided with the water conservancy diversion inclined plane down, on the connecting plate in the vent is close to one side of fan spiral case is provided with the aviation baffle of slope, the aviation baffle can with the laminating of water conservancy diversion inclined plane.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, on the connecting plate in vent department is provided with first hem, first hem can with go up the wallboard laminating and the connection of casing.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, lampblack absorber leads oily structure and still includes the fastener, it connects the otic placode to lead to be provided with on the oily part, it passes through to connect the otic placode the fastener with first hem is connected.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, it includes the bottom plate to lead oily part, first end plate, mounting panel and second end plate have set gradually along circumference on the bottom plate, first end plate the mounting panel with the second end plate is in enclose on the bottom plate and establish formation lead the oil groove, the mounting panel with the casing laminating down, the bottom plate is kept away from one side of mounting panel with go up the casing and paste and lean on to form the water conservancy diversion face of slope.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, the mounting panel is close to one side of casing is provided with the oil extraction sleeve pipe down, oil extraction sleeve pipe one end with lead the oil groove intercommunication, the other end runs through the lateral wall of casing down, and stretch into the inferior valve is internal.

As the utility model discloses an oil structure's preferred scheme is led to lampblack absorber, the casing is including relative front bezel and the back plate that sets up down, be provided with the mounting hole on the front bezel, the oil extraction sleeve pipe is worn to locate in the mounting hole, the mounting panel with the front bezel laminating.

As the utility model discloses a lampblack absorber leads oily structure's preferred scheme, be close to on the connecting plate one side of back plate is provided with the second hem, the second hem can with the back plate laminating is connected.

On the other hand, the range hood comprises an upper shell, a lower shell, a fan volute and the oil guide structure of the range hood, wherein the fan volute is located in the upper shell.

The utility model has the advantages that:

the utility model provides an oily structure and lampblack absorber are led to lampblack absorber, in the lampblack absorber use, the fluid (the oil water mixture) that produces in the fan spiral case can constantly flow into the oil groove of leading of connecting plate below to it is internal to flow into the inferior valve via leading the oil groove, finally collects in the oil cup of inferior valve casing below, avoids fluid to drip to the external pollution kitchen, makes things convenient for the later stage to clear up. The oil guide component enables an oil-water mixture in the fan volute to be discharged into the oil cup in time, a large amount of oil stains accumulated in the fan volute are avoided, accordingly, the working resistance of the impeller in the fan volute can be reduced, the smoke exhaust effect of the range hood is improved, and the user experience is good. The connecting plate can be connected on the one hand and shell and lower casing, and on the other hand can the shutoff opening in casing top down to only communicate through the vent on the connecting plate between the inner chamber of making the inner chamber of last casing and the inner chamber of lower casing, guarantee the inside seal of lampblack absorber, improve smoke exhaust effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is an installation schematic view of an oil guiding structure of a range hood provided by the specific embodiment of the present invention;

fig. 2 is an exploded schematic view of an oil guiding structure of a range hood according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a connection plate according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an oil guide component according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lower housing of a range hood according to an embodiment of the present invention;

fig. 6 is an installation diagram of the oil guiding component and the lower housing according to the embodiment of the present invention.

In the figure:

1-connecting plate; 2-an oil conducting part;

11-a vent; 12-a first via; 13-a wind deflector; 14-a first fold; 15-second folding;

21-a bottom plate; 22-a first end plate; 23-mounting a plate; 24-a second end plate; 25-oil guide grooves;

221-connecting ear plates; 231-oil drain sleeve;

100-an upper shell; 200-a lower housing; 201-front plate; 202-a back plate; 2021-mounting holes;

300-a fan volute; 301-a second via;

400-oil screen; 500-baffle.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 to 6, the present embodiment provides an oil guiding structure of a range hood, which includes a connecting plate 1 and an oil guiding member 2.

Referring to fig. 1 and 2, a connection plate 1 is connected between an upper casing 100 and a lower casing 200 of the range hood and located below a blower volute 300, and the connection plate 1 is provided with a vent 11 communicating the upper casing 100 and the lower casing 200. Lead oil component 2 and set up in the below of connecting plate 1, lead oil component 2 and have and lead oil groove 25, the inner chamber of fan spiral case 300 and the inner chamber of lower casing 200 all with lead oil groove 25 intercommunication, fluid in the fan spiral case 300 can be via leading in the oil groove 25 inflow lower casing 200.

The oily structure is led to lampblack absorber that this embodiment provided, in the lampblack absorber use, fluid (oil-water mixture) that produces in the fan spiral case 300 can constantly flow into the oil groove 25 of leading of connecting plate 1 below to in leading oil groove 25 inflow lower shell 200, finally collect in the oil cup of lower shell 200 below, avoid fluid to drip to the external pollution kitchen, make things convenient for the later stage clearance. The oil guide component 2 is arranged to enable an oil-water mixture in the fan volute 300 to be discharged into the oil cup in time, a large amount of oil stains accumulated in the fan volute 300 are avoided, accordingly, the working resistance of an impeller in the fan volute 300 can be reduced, the smoke exhaust effect of the range hood is improved, and the user experience is good. Connecting plate 1 can connect upper housing 100 and lower casing 200 on the one hand, and the opening of casing 200 top down can the shutoff on the other hand to only communicate through vent 11 on the connecting plate 1 between the inner chamber of upper housing 100 and the inner chamber of lower casing 200, guarantee the inside seal of lampblack absorber, improve the smoke evacuation effect.

Optionally, referring to fig. 1 and fig. 2, a first through hole 12 opposite to the oil guide groove 25 is formed in the connecting plate 1, a second through hole 301 opposite to the first through hole 12 is formed at the bottom of the blower scroll 300, and the oil in the blower scroll 300 flows into the lower housing 200 through the second through hole 301, the first through hole 12 and the oil guide groove 25 in sequence. That is, the inner cavity of the blower volute 300 is communicated with the oil guide groove 25 through the first through hole 12 and the second through hole 301, the oil collected to the second through hole 301 immediately drops into the oil guide groove 25 through the first through hole 12, and then flows onto the inner wall surface of the lower housing 200 through the oil guide groove 25, and the oil converges into the oil cup at the bottom of the lower housing 200 along the inner wall surface of the lower housing 200. The second through hole 301 is arranged at the bottom of the fan volute 300, so that an oil-water mixture (namely oil) generated in the fan volute 300 can flow out through the second through hole 301 in time, and oil dirt is prevented from accumulating in the fan volute 300.

Further, as shown in fig. 1, the aperture of the first through hole 12 of the present embodiment is larger than the aperture of the second through hole 301, so that the oil flowing out of the second through hole 301 completely falls into the oil guiding groove 25, thereby preventing the oil from splashing onto the connecting plate 1 in the dropping process, and preventing the oil from accumulating on the connecting plate 1.

Optionally, referring to fig. 1, 2 and 3, a flow guiding inclined plane (not shown) is disposed at one end of the blower volute 300 facing the lower casing 200, an inclined air guiding plate 13 is disposed on one side of the vent 11 on the connecting plate 1, the side being close to the blower volute 300, and the air guiding plate 13 can be attached to the flow guiding inclined plane. Through setting up the water conservancy diversion inclined plane at the lower extreme of spiral case to set up aviation baffle 13 on connecting plate 1, both cooperations can play the guide effect to the air current that gets into upper housing 100 by lower casing 200, prevent that the smoking in-process air current from forming the vortex at the lower extreme of spiral case, thereby can reduce the loss of air current, further improve the smoke exhaust efficiency of lampblack absorber. Meanwhile, the arrangement of the flow guide inclined plane and the air deflector 13 can prevent the fan volute 300 from excessively shielding the air inlet channel, so that the fan is ensured to have enough air inlet space, and the air inlet of the fan volute 300 is prevented from causing rush of air flow due to the narrow air inlet space, so that the noise of the range hood during working can be reduced.

In addition, the arrangement of the air deflector 13 can also limit the installation position of the fan volute 300 in the upper shell 100, so that the fan volute 300 is prevented from moving and deviating due to vibration in the working process of the fan, and the installation stability of the fan volute 300 is improved.

Optionally, referring to fig. 1, 2 and 3, a first folded edge 14 is provided on the connecting plate 1 at the vent 11, and the first folded edge 14 can be attached to and connected with a wall of the upper casing 100. In this embodiment, the ventilation opening 11 is rectangular, the air deflector 13 is disposed on one side of the ventilation opening 11 close to the blower volute 300, the remaining three sides are provided with the first folding edges 14, and the lower end of the upper casing 100 is inserted into an area surrounded by the three first folding edges 14. That is, the first flange 14 is attached to the outer wall of the lower case 200 and is fixed by a fixing member such as a screw, so that the upper case 100 and the connection plate 1 are firmly connected.

Alternatively, referring to fig. 4, the oil guiding component 2 includes a bottom plate 21, a first end plate 22, a mounting plate 23, and a second end plate 24 are sequentially disposed on the bottom plate 21 along a circumferential direction, the first end plate 22, the mounting plate 23, and the second end plate 24 enclose an oil guiding groove 25 on the bottom plate 21, the mounting plate 23 is attached to the lower shell 200, and one side of the bottom plate 21 away from the mounting plate 23 is attached to the upper shell 100 (as shown in fig. 1) to form an inclined flow guiding surface. That is, the bottom plate 21 of the oil guiding component 2 of the present embodiment is installed to be inclined with respect to the lower casing 200, so that the bottom surface of the oil guiding groove 25 forms a flow guiding surface inclined toward the lower casing 200, which is beneficial to quickly flowing the oil-water mixture in the oil guiding groove 25 into the lower casing 200, and avoiding excessive oil dirt accumulated in the oil guiding groove 25.

Preferably, the first end plate 22 and the second end plate 24 are both right triangles, one cathetus of the right triangle is connected with the mounting plate 23, the other cathetus can be attached to the lower bottom surface of the connecting plate 1, and the hypotenuse of the right triangle is connected with the bottom plate 21. When the mounting plate 23 is attached to the outer wall of the lower housing 200, the bottom plate 21 is inclined relative to the lower housing 200 to form an inclined flow guide surface.

Optionally, the oil guiding structure of the range hood further includes a fastening member, referring to fig. 2 and 4, the oil guiding member 2 is provided with a connecting ear plate 221, and the connecting ear plate 221 is connected with the first folded edge 14 through the fastening member. In this embodiment, the first end plate 22 and the second end plate 24 of the oil guiding component 2 are respectively provided with one connecting ear plate 221, the two connecting ear plates 221 are respectively connected with two first folding edges 14 arranged on the connecting plate 1 at intervals along the length direction, and the connecting ear plates 221 are attached to one side of the first folding edges 14, which faces away from the air guiding plate 13. After the two connecting ear plates 221 are respectively and fixedly connected with the two first folding edges 14, the mounting plate 23 is attached to the outer wall of the lower shell 200, and a fixing part is not needed to be additionally used for fixing, so that the mounting is convenient. The fastening piece is preferably a screw, a threaded hole can be formed in the first folding edge 14, a through hole is formed in the connecting lug plate 221, the screw penetrates through the through hole and is screwed into the threaded hole, the threaded connection mode is convenient to install, and the connection is reliable.

Alternatively, referring to fig. 2 and 4, an oil drain sleeve 231 is disposed on one side of the mounting plate 23 close to the lower casing 200, one end of the oil drain sleeve 231 is communicated with the oil guide groove 25, and the other end penetrates through the side wall of the lower casing 200 and extends into the lower casing 200. The oil-water mixture flowing into the oil guide groove 25 is introduced into the inner sidewall of the lower housing 200 through the oil discharge sleeve 231, and finally collected into the oil cup. In this embodiment, two oil drainage sleeves 231 are disposed on the mounting plate 23 at intervals along the length direction, and the two oil drainage sleeves 231 are both located on one side of the mounting plate 23 close to the bottom plate 21, so that the oil-water mixture in the oil guide groove 25 can be discharged into the lower housing 200 in time, and the excessive oil-water mixture accumulated in the oil guide groove 25 is avoided.

Optionally, referring to fig. 5 and 6, the lower housing 200 includes a front plate 201 and a rear plate 202 disposed opposite to each other, the front plate 201 is provided with a mounting hole 2021, the oil drain sleeve 231 is disposed in the mounting hole 2021, and the mounting plate 23 is attached to the front plate 201. In this embodiment, two mounting holes 2021 are formed in the front plate 201, two oil drain sleeves 231 are correspondingly inserted into the two mounting holes 2021, and the oil drain sleeves 231 protrude out of the inner wall of the front plate 201 after passing through the mounting holes 2021, so as to prevent oil from leaking to the outside of the front plate 201 through the mounting holes 2021.

Further, a sealing ring may be disposed on the oil drain sleeve 231 to seal the oil drain sleeve 231 and the mounting hole 2021, so as to further prevent the oil flowing out of the oil drain sleeve 231 from leaking to the outside of the lower housing 200 through the mounting hole 2021.

Optionally, referring to fig. 1, 2 and 3, the connecting plate 1 is provided with a second flange 15 at one edge close to the back plate 202, and the second flange 15 can be attached to and connected with the back plate 202. In this embodiment, the second flange 15 is attached to the outer side of the rear plate 202 and fixed by a fixing member such as a screw so that the connecting plate 1 closes the opening above the lower case 200 and the upper case 100 and the lower case 200 are connected integrally.

Referring to fig. 1 and fig. 2, the present embodiment further provides a range hood, which includes an upper housing 100, a lower housing 200, a blower volute 300, and the above range hood oil guiding structure, where the blower volute 300 is located in the upper housing 100. By adopting the range hood with the oil guide structure, in the using process, an oil-water mixture generated in the fan volute 300 can continuously flow into the oil guide groove 25 below the connecting plate 1, flows into the lower shell 200 through the oil guide groove 25, and finally is collected into the oil cup below the lower shell 200, so that oil is prevented from dropping to the outside to pollute a kitchen, and later cleaning is facilitated. The oil guide component 2 is arranged to enable an oil-water mixture in the fan volute 300 to be discharged into the oil cup in time, a large amount of oil stains accumulated in the fan volute 300 are avoided, accordingly, the working resistance of an impeller in the fan volute 300 can be reduced, the smoke exhaust effect of the range hood is improved, and the user experience is good.

Further, referring to fig. 1, an end of the lower casing 200 away from the upper casing 100 is provided with an air inlet, a baffle 500 is rotatably disposed on the lower casing 200 at the air inlet, and the baffle 500 can be switched between a first position of rotating to open the air inlet and a second position of rotating to block the air inlet. When the baffle 500 is rotated outwards and unfolded to the first position, the smoke gathering effect can be achieved, and the smoke sucking and the smoke discharging of the range hood are facilitated. When the lampblack absorber does not use, can rotate baffle 500 again to shutoff air intake, the bottom (the second place) of lampblack absorber promptly, save and take up an area of the space, can guarantee that the kitchen is neat and artistic.

As shown in fig. 1, an oil screen 400 is further disposed at the air inlet on the lower casing 200, and the oil screen 400 can filter impurities in the oil smoke, avoid damage to the fan, and prevent blockage of the smoke exhaust pipeline. Meanwhile, part of oil stains can be condensed on the oil screen 400, so that the oil stains accumulated in the lower shell 200, the upper shell 100 and the fan volute 300 are reduced, and later-stage cleaning is facilitated.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. Oil structure is led to lampblack absorber, its characterized in that includes:

the connecting plate (1) is connected between an upper shell (100) and a lower shell (200) of the range hood and located below the fan volute (300), and a ventilation opening (11) which is communicated with the upper shell (100) and the lower shell (200) is formed in the connecting plate (1);

lead oily part (2), lead oily part (2) set up in the below of connecting plate (1), lead oily part (2) have lead oil groove (25), the inner chamber of fan spiral case (300) with the inner chamber of lower casing (200) all with lead oil groove (25) intercommunication, fluid in fan spiral case (300) can via lead oil groove (25) inflow in lower casing (200).

2. The range hood oil guide structure according to claim 1, wherein a first through hole (12) opposite to the oil guide groove (25) is formed in the connecting plate (1), a second through hole (301) opposite to the first through hole (12) is formed in the bottom of the fan volute (300), and oil in the fan volute (300) sequentially flows into the lower shell (200) through the second through hole (301), the first through hole (12) and the oil guide groove (25).

3. The range hood oil guide structure according to claim 1, wherein a flow guide inclined surface is arranged at one end of the fan volute (300) facing the lower shell (200), an inclined air guide plate (13) is arranged on one side, close to the fan volute (300), of the vent (11) on the connecting plate (1), and the air guide plate (13) can be attached to the flow guide inclined surface.

4. The range hood oil guide structure according to claim 1, wherein a first folding edge (14) is arranged at the ventilation opening (11) on the connecting plate (1), and the first folding edge (14) can be attached and connected with a wall plate of the upper shell (100).

5. The lampblack absorber oil guide structure of claim 4, characterized in that, the lampblack absorber oil guide structure still includes the fastener, be provided with on the oil guide part (2) and connect otic placode (221), connect otic placode (221) through the fastener with first hem (14) is connected.

6. The lampblack absorber oil guide structure of claim 1, characterized in that, oil guide part (2) includes bottom plate (21), first end plate (22), mounting panel (23) and second end plate (24) have set gradually along circumference on bottom plate (21), first end plate (22), mounting panel (23) and second end plate (24) are in enclose on bottom plate (21) and establish and form oil guide groove (25), mounting panel (23) with lower casing (200) laminating, bottom plate (21) are kept away from one side of mounting panel (23) with last casing (100) paste and lean on to form the water conservancy diversion face of slope.

7. The range hood oil guide structure according to claim 6, wherein an oil discharge sleeve (231) is arranged on one side of the mounting plate (23) close to the lower shell (200), one end of the oil discharge sleeve (231) is communicated with the oil guide groove (25), and the other end of the oil discharge sleeve penetrates through the side wall of the lower shell (200) and extends into the lower shell (200).

8. The range hood oil guide structure according to claim 7, wherein the lower housing (200) comprises a front plate (201) and a rear plate (202) which are arranged oppositely, a mounting hole (2021) is formed in the front plate (201), the oil discharge sleeve (231) is arranged in the mounting hole (2021) in a penetrating manner, and the mounting plate (23) is attached to the front plate (201).

9. A range hood oil guide structure according to claim 8, characterized in that a second folded edge (15) is arranged on one side of the connecting plate (1) close to the rear plate (202), and the second folded edge (15) can be attached and connected with the rear plate (202).

10. A range hood, characterized by, including last casing (100), lower casing (200), fan spiral case (300) and according to the range hood of any one of claims 1-9 leading oil structure, fan spiral case (300) are located in last casing (100).