Oil guide structure of range hood and range hood

By designing an oil-guiding structure on the range hood, including oil-guiding components and an extension plate, the problem of oil droplets falling onto the cooktop is solved, achieving effective guidance and collection of oil droplets, thus improving the performance and aesthetics of the range hood.

CN224108269UActive Publication Date: 2026-04-10GUANGDONG CHENGYI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG CHENGYI TECH CO LTD
Filing Date
2025-04-18
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

After prolonged use, existing range hoods tend to drip oil from the air intake and onto the cooktop, affecting their performance.

Method used

An oil guiding structure for a range hood was designed, including an air intake panel, an oil guiding component, a reinforcing plate, and a flap assembly. Through the design of the oil guiding component and the extension plate, oil droplets drip from the air intake and flow along the oil guiding component and the extension plate, avoiding dripping onto the cooktop. The oil is collected through an oil collection box. The flap assembly is used to open or close the air intake.

Benefits of technology

It effectively prevents oil droplets from dripping from the air intake, improves the performance of the range hood, reduces oil contamination on the stove, and enhances the aesthetics and functionality of the range hood.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an oil guide structure of a range hood and the range hood. The oil guide structure of the range hood comprises an air suction panel, an oil guide piece and a reinforcing plate, an air suction opening is formed in the air suction panel; the oil guide piece is connected to the upper edge of the exhaust inlet and used for guiding oil on the upper edge of the exhaust inlet to the rear side of the exhaust inlet. The reinforcing plate is arranged on the rear side of the air suction panel and provided with a receding opening around the air suction opening, the lower edge of the receding opening is provided with a first extending plate and a second extending plate, the first extending plate extends from front to back, the second extending plate is formed by extending of the first extending plate, and the second extending plate is obliquely arranged downwards from front to back. And the downward projection of the lower edge of the oil guide piece falls on the second extension plate. According to the oil guide structure of the range hood, oil drops can be prevented from dropping out of the range hood from the exhaust inlet and then falling on a kitchen range, so that the using effect of the range hood is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood technical field, specifically, a range hood's oil guide structure and range hood. BACKGROUND

[0002] The range hood is also called an oil fume exhaust or an extractor hood, which is a kind of kitchen appliance for purifying the kitchen environment, and is installed above the kitchen stove, which can quickly exhaust the waste gas of the stove combustion and the oil fume harmful to human body generated in the cooking process and discharge it to the outdoor. After long-term use of the oil fume exhaust, oil liquid will accumulate in the wind collecting box, and when the oil liquid accumulates too much, some oil liquid will directly drop in the form of oil droplets. In the related technology, the air suction panel of the oil fume exhaust is inclined downward, and the air suction port on the air suction panel is also inclined downward, so the oil droplets falling from the air suction port are easy to drop out of the oil fume exhaust and fall on the stove, which affects the use effect of the range hood. SUMMARY

[0003] The utility model discloses a range hood's oil guide structure, which is used to solve the above technical problems.

[0004] The range hood's oil guide structure provided by the utility model comprises an air suction panel, an oil guide piece and a reinforcing plate, the air suction panel is provided with an air suction port, the oil guide piece is connected to the upper edge of the air suction port and is used for guiding the oil liquid on the upper edge of the air suction port to the rear side of the air suction port, and the reinforcing plate is arranged on the rear side of the air suction panel and is provided with an avoiding port arranged around the air suction port, the lower edge of the avoiding port is provided with a first extension plate and a second extension plate, the first extension plate extends from front to back, the second extension plate is formed by the extension of the first extension plate, the second extension plate is arranged downwardly and obliquely from front to back, and the lower edge projection of the oil guide piece downwardly falls on the second extension plate.

[0005] According to an embodiment of the utility model, the edge of the air suction port is provided with an air guide ring around the air suction port, the air guide ring is in the shape of a neck, the upper edge of the air guide ring is provided with an upper turning edge, the upper turning edge is arranged upwardly and obliquely from front to back, and the oil guide piece is connected to the upper turning edge; the lower edge of the air guide ring is provided with a lower turning edge, the lower turning edge is arranged downwardly and obliquely from front to back, and the lower edge of the lower turning edge is in abutment with the first extension plate.

[0006] According to an embodiment of the utility model, the oil guide piece comprises a connecting plate and an oil guide plate, the connecting plate is connected with the upper turning edge, the oil guide plate extends to the rear side of the air suction port, and the lower edge projection of the oil guide plate downwardly falls on the second extension plate.

[0007] According to an embodiment of the utility model, the edge of the avoiding port is provided with an oil blocking ring, and the first extension plate is connected with the lower edge of the oil blocking ring.

[0008] According to an embodiment of the utility model, the upper edge of the oil baffle is provided with an oil baffle plate, the oil baffle plate is arranged along the width direction of the air inlet, the oil baffle plate is L-shaped, and the oil baffle plate comprises an extension part extending rearward from the upper edge of the oil baffle and an oil baffle part formed by folding upward the rear edge of the extension part.

[0009] According to an embodiment of the utility model, the oil guide structure of the range hood further comprises an oil receiving box, the oil receiving box is connected to the reinforcing plate and located below the avoiding opening, the width of the oil receiving box is greater than the width of the avoiding opening, the downward projection of the second extension plate falls into the oil receiving box, and the oil receiving box is provided with an oil discharge hole.

[0010] According to an embodiment of the utility model, the edge of the side, away from the reinforcing plate, of the oil discharge hole extends downward with an oil guide plate, the oil guide plate guides the oil liquid to the rear side of the air inlet panel, so that the oil liquid flows downward along the rear side of the air inlet panel.

[0011] According to an embodiment of the utility model, the oil guide structure of the range hood further comprises a flap assembly, the flap assembly comprises a driving structure and a flap, the driving structure is connected to the rear side of the air inlet panel, the flap is connected to the second extension plate through a hinge, and the driving structure is used for driving the flap to rotate, so that the flap opens or closes the air inlet.

[0012] According to an embodiment of the utility model, the driving structure comprises a driving motor, a first connecting rod and a second connecting rod, the driving motor is arranged on the rear side of the air inlet panel, the output end of the driving motor is connected to the first connecting rod, the first connecting rod is connected to the input end of the second connecting rod, the flap is provided with a connecting seat, the output end of the second connecting rod is connected to the connecting seat, the rear side of the air inlet panel is provided with a motor cover, and the driving motor is arranged in the motor cover.

[0013] The utility model further provides a range hood, adopts the oil guide structure of the range hood as above, and is characterized by comprising a range hood main body, the range hood main body has an air inlet panel and a smoke collecting cavity located at the rear side of the air inlet panel, the bottom of the smoke collecting cavity is provided with an oil outlet hole, the bottom of the range hood main body is further connected with an oil cup, and the oil outlet hole is communicated with the oil cup.

[0014] Compared with the prior art, the oil guide structure of the range hood has the following advantages:

[0015] The oil guide structure of the smoke machine, the oil guide piece can receive the oil drops falling downward from the upper direction of the air suction opening, so that the oil drops can fall on the oil guide piece and cannot drip out of the smoke machine from the air suction opening, after the oil drops fall on the oil guide piece, the oil drops can flow along the oil guide piece to the rear side and downwardly and obliquely, and then fall on the second extension plate from the lower edge of the oil guide piece, the oil drops falling on the second extension plate can continue to flow along the second extension plate to the rear side and downwardly and obliquely, and then continue to fall downwardly from the lower edge of the second extension plate. Under the flow guiding effect of the oil guide piece, a sufficient distance is formed between the oil drops falling from the oil guide piece to the second extension plate and the air suction opening, so that the oil drops can be prevented from falling on the cooking utensil from the air suction opening after dripping out of the smoke machine, and the use effect of the smoke machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure sectional view of the smoke machine of the utility model;

[0017] Figure 2 It is Figure 1 It is a local enlarged view of A in the middle;

[0018] Figure 3 It is a structure sectional view of another embodiment of the smoke machine of the utility model;

[0019] Figure 4 It is Figure 3 It is a local enlarged view of B in the middle;

[0020] Figure 5 It is a structure schematic view of the flap assembly and the air suction panel in the utility model;

[0021] Figure 6 It is Figure 5 It is a local enlarged view of C in the middle.

[0022] In the drawing: a. smoke collecting cavity, a1. oil outlet hole, 1. air suction panel, 11. air suction opening, 12. air guide ring, 13. upper turning edge, 14. lower turning edge, 2. oil guide piece, 21. connecting plate, 22. oil guide plate, 3. reinforcing plate, 31. first extension plate, 32. second extension plate, 33. oil blocking ring, 34. oil blocking plate, 35. hinge, 4. oil receiving box, 41. oil discharge hole, 42. oil guide plate, 5. flap assembly, 51. driving structure, 511. driving motor, 512. first connecting rod, 513. second connecting rod, 514. connecting seat, 515. motor cover, 52. flap, 6. oil cup.

[0023] The function realization and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described below with reference to the drawings. For the purpose of clearness, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0025] It should be noted that all directional references (such as upper, lower, left, right, front, rear, etc.) contained in the present application are merely used for explanation purposes to facilitate understanding of the present application by the reader, and do not indicate or imply that the present application is limited to a particular orientation or position. In addition, it is to be understood that the embodiments of the present application can be practiced with the exact opposite orientation or position of the parts and steps thereof, without departing from the scope and spirit of the present application.

[0026] In addition, the descriptions such as "first", "second" and the like in the present application are merely used for description purposes, and do not particularly indicate the order or sequence, nor limit the present application. They are merely used to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled persons in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0027] In order to further understand the content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows in combination with the drawings:

[0028] The present application discloses an oil guide structure of a smoke machine, which is used for the smoke machine. Please refer to Figures 1 to 4 The oil guide structure of the smoke machine comprises a suction panel 1, an oil guide 2 and a reinforcing plate 3. The suction panel 1 is provided with a suction port 11. The oil guide 2 is connected to the upper edge of the suction port 11 and is used for guiding the oil liquid at the upper edge of the suction port 11 to the rear side of the suction port 11. The reinforcing plate 3 is arranged at the rear side of the suction panel 1 and is provided with an avoiding port arranged around the suction port 11. The lower edge of the avoiding port is provided with a first extension plate 31 and a second extension plate 32. The first extension plate 31 extends from front to rear. The second extension plate 32 is formed by extending from the first extension plate 31. The second extension plate 32 is arranged downwardly and obliquely from front to rear. The lower edge of the oil guide 2 is projected downwardly and falls on the second extension plate 32.

[0029] In the embodiment, the air suction opening 11 extends through the air suction panel 1 and extends in the transverse direction, and during operation of the range hood, the air suction opening 11 is opposite to the user side, so that the air suction opening 11 can timely suck in the oil fume generated during cooking. The oil in the oil fume will adhere and accumulate into oil liquid in the range hood, and part of the oil liquid will flow downward along the inner wall of the range hood, and part of the oil liquid will drop in the form of oil droplets.

[0030] The oil guide 2 is connected to the upper edge of the air suction opening 11, that is, is located above the air suction opening 11, and the second extension plate 32 is located below the air suction opening 11. The oil guide 2 can receive the oil droplets falling downward from the air suction opening 11, so that the oil droplets can fall on the oil guide 2 and will not drip out of the range hood from the air suction opening 11. After the oil droplets fall on the oil guide 2, the oil droplets can flow rearward and downward obliquely along the oil guide 2, and then drop from the lower edge of the oil guide 2 to the second extension plate 32. The oil droplets falling on the second extension plate 32 can continue to flow rearward and downward obliquely along the second extension plate 32, and then continue to drop downward from the lower edge of the second extension plate 32. Under the flow guiding effect of the oil guide 2, a sufficient distance is formed between the oil droplets falling from the oil guide 2 to the second extension plate 32 and the air suction opening 11, so that the oil droplets can be prevented from falling on the cooktop from the air suction opening 11 of the range hood, thereby improving the use effect of the range hood.

[0031] The oil guide structure of the range hood of the utility model is shown in the accompanying drawings, Figures 1 to 6 As shown in the accompanying drawings, the edge of the air suction opening 11 is provided with an air guide ring 12 around the air suction opening 11, the air guide ring 12 is in the form of a necked opening, the upper edge of the air guide ring 12 is provided with an upper turning edge 13, the upper turning edge 13 is arranged upwardly inclined from front to rear, and the oil guide 2 is connected to the upper turning edge 13; the lower edge of the air guide ring 12 is provided with a lower turning edge 14, the lower turning edge 14 is arranged downwardly inclined from front to rear, and the lower edge of the lower turning edge 14 abuts against the first extension plate 31.

[0032] During cooking, when the oil fume is sucked and discharged, the oil fume enters the air suction opening 11 and flows into the annular opening structure formed by the air guide ring 12. The flow area of the air guide ring 12 gradually shrinks from the side close to the air suction opening 11 to the side away from the air suction opening 11, and the air guide ring 12 in the form of a necked opening can increase the flow rate of the oil fume passing through the air suction opening 11. When the oil fume passes through the necked opening, the cross-sectional area decreases, and the flow rate increases correspondingly, which helps to improve the transmission efficiency of the oil fume in the system and reduce the residence time of the oil fume near the air suction opening 11. The upper turning edge 13 can be fixedly connected with the oil guide 2, thereby improving the installation stability of the oil guide 2. The upper turning edge 13 can be fixedly connected with the oil guide 2, thereby improving the installation stability of the oil guide 2.

[0033] The oil guide structure of the range hood of the utility model is shown in the accompanying drawings, Figures 1 to 4As shown, the oil guide 2 comprises a connecting plate 21 connected with the upper flange 13 and an oil guide plate 22 extending to the rear side of the air inlet 11, and the lower edge of the oil guide plate 22 projects downwardly to fall on the second extension plate 32. The extension direction of the connecting plate 21 is consistent with the extension direction of the upper flange 13, so as to increase the connecting area of the connecting plate 21 and the upper flange 13 and improve the connecting stability. The oil guide plate 22 is connected to the lower edge of the connecting plate 21 and is arranged rearwardly and downwardly from top to bottom, so that the oil drops falling on the oil guide 2 flow downwardly and to the rear side along the oil guide plate 22 and then fall on the second extension plate 32 from the lower edge of the oil guide plate 22.

[0034] As shown in the drawings, the oil guide structure of the range hood comprises a first extension plate 31 connected to the upper flange 13 and a second extension plate 32 connected to the first extension plate 31 and extending to the rear side of the air inlet 11. Figures 1 to 4 As shown, the edge of the avoiding opening is provided with an oil blocking ring 33, and the first extension plate 31 is connected to the lower edge of the oil blocking ring 33. The oil liquid adhered to the inside of the range hood flows downwardly along the back of the air inlet panel 1, and the oil liquid adhered to the wall surface of the air inlet panel 1 above the air inlet 11 flows downwardly to the air inlet 11. The oil blocking ring 33 can guide the oil liquid on the wall surface of the air inlet panel 1 above the avoiding opening to the two sides of the air inlet 11, so as to avoid that the oil fume directly flows to the air inlet 11 and drops out of the range hood from the air inlet 11, thereby enabling the oil liquid to bypass the air inlet 11 and continue to flow downwardly, so as to further prevent the oil liquid from dripping outwards.

[0035] As shown in the drawings, the oil guide structure of the range hood comprises a first extension plate 31 connected to the upper flange 13 and a second extension plate 32 connected to the first extension plate 31 and extending to the rear side of the air inlet 11. Figures 1 to 4 As shown, the upper edge of the oil blocking ring 33 is provided with an oil blocking plate 34, the oil blocking plate 34 is arranged along the width direction of the air inlet 11, the oil blocking plate 34 is L-shaped and comprises an extension part extending rearwardly from the upper edge of the oil blocking ring 33 and an oil blocking part formed by the rear edge of the extension part being folded upwardly. The oil blocking part can block the oil liquid on the upper edge of the oil blocking ring 33, prevent the oil liquid from flowing rearwardly on the oil blocking ring 33 to the rear edge of the oil blocking ring 33 and directly dropping downwardly, thereby enabling the oil liquid on the oil blocking ring 33 to sufficiently flow to the two sides, so as to improve the oil guiding effect on the oil liquid.

[0036] As shown in the drawings, the oil guide structure of the range hood comprises a first extension plate 31 connected to the upper flange 13 and a second extension plate 32 connected to the first extension plate 31 and extending to the rear side of the air inlet 11. Figures 1 to 6 As shown, the oil guide structure of the range hood further comprises an oil receiving box 4 connected to the reinforcing plate 3 and located below the avoiding opening, the width of the oil receiving box 4 is greater than the width of the avoiding opening, the downward projection of the second extension plate 32 falls into the oil receiving box 4, and the oil receiving box 4 is provided with an oil discharging hole 41. The oil liquid dropped on the second extension plate 32 from the oil guide 2 continues to drop downwardly and then drops on the oil receiving box 4, and then flows to the bottom of the range hood through the oil discharging hole 41 of the oil receiving box 4. In this way, the oil liquid can be prevented from directly dropping from the second extension plate 32 to the bottom of the range hood and producing obvious dripping sound, thereby further improving the use effect of the range hood.

[0037] As shown in the drawings, the oil guide structure of the range hood comprises a first extension plate 31 connected to the upper flange 13 and a second extension plate 32 connected to the first extension plate 31 and extending to the rear side of the air inlet 11. Figures 1 to 4As shown, the oil drain hole 41 extends downward away from the edge of one side of the reinforcing plate 3, and an oil guide plate 42 is arranged on the oil drain hole 41, which guides the oil to the back side of the air suction panel 1, so that the oil flows downward along the back side of the air suction panel 1. When the oil in the oil receiving box 4 flows through the oil drain hole 41, it will not directly drip downward, but will flow along the oil guide plate 42 to the back of the air suction panel 1, and then flow downward along the back of the air suction panel 1. In this way, the oil can be prevented from directly dripping from the oil receiving box 4 to the bottom of the range hood, thereby avoiding the obvious dripping sound, and further improving the use effect of the range hood.

[0038] The oil guide structure of the range hood of the utility model, as shown in the figure, Figures 1 to 6 The oil guide structure of the range hood further comprises a flap assembly 5, the flap assembly 5 comprises a driving structure 51 and a flap 52, the driving structure 51 is connected to the back side of the air suction panel 1, and the flap 52 is connected to the second extension plate 32 through a hinge 35; the driving structure 51 is used for driving the flap 52 to rotate, so that the flap 52 opens or closes the air suction opening 11.

[0039] An installation space is formed between the back of the air suction panel 1 and the wall body, and the flap assembly 5 is arranged on the back side of the air suction panel 1, i.e. in the installation space, so that the flap assembly 5 is hidden, and the appearance of the entire range hood is ensured. At the same time, the air suction panel 1 can form a barrier effect for the driving structure 51 and the oil fume generated during cooking, so as to prevent the oil fume from polluting the driving structure 51, thereby ensuring the service life of the driving structure 51.

[0040] When cooking, the driving structure 51 drives the flap 52 to rotate, so that the flap 52 opens the air suction opening 11, and thus the oil fume can be sucked into the range hood through the air suction opening 11. When cooking is finished, the driving structure 51 drives the flap 52 to rotate reversely, so that the flap 52 closes the air suction opening 11, and the air suction opening 11 is in a closed state, so that the user cannot see the internal cavity structure of the range hood from the air suction opening 11, thereby ensuring the appearance of the entire range hood. In addition, closing the air suction opening 11 in the idle state of the range hood can also prevent insects and other foreign matters from entering the range hood and affecting the operation of the range hood, thereby improving the protection effect on the internal structure of the range hood.

[0041] The oil guide structure of the range hood of the utility model, as shown in the figure, Figure 1 The driving structure 51 comprises a driving motor 511, a first connecting rod 512 and a second connecting rod 513; the driving motor 511 is arranged on the back side of the air suction panel 1; the output end of the driving motor 511 is connected to the first connecting rod 512; the first connecting rod 512 is connected to the input end of the second connecting rod 513; a connecting seat 514 is arranged on the flap 52; the output end of the second connecting rod 513 is connected to the connecting seat 514; a motor cover 515 is arranged on the back side of the air suction panel 1; and the driving motor 511 is arranged in the motor cover 515.

[0042] When the cooking work is carried out, the driving motor 511 is started, the driving motor 511 drives the first connecting rod 512 to rotate, the rotating first connecting rod 512 pulls the second connecting rod 513 to move, the second connecting rod 513 pulls the flap 52 to rotate, and the opening or closing of the suction port 11 by the flap 52 is realized. In the control process, the control of the driving motor 511 can make the flap 52 rotate at any angle, so as to adjust the opening angle of the suction port 11 through the opening and closing of the suction port 11, meet the demand of air volume and noise control.

[0043] The connecting seat 514 is installed at the middle position of the back surface of the flap 52, so that the force of each part of the flap 52 is balanced under the driving of the driving structure 51, and the rotation of each part of the flap 52 is ensured, and the simultaneous opening or closing of each part of the suction port 11 is realized. The two ends of the second connecting rod 513 are rotatably connected with the first connecting rod 512 and the connecting seat 514 through the connecting shafts. One end surface of the connecting seat 514 can be fixedly connected with the flap 52 through a screw, and the other end surface can be rotatably connected with the second connecting rod 513 through the connecting shaft.

[0044] The motor cover 515 can hide and protect the driving motor 511, prevent oil and oil fume from easily adhering to the motor and affecting the operation of the motor, so as to ensure the operation effect of the motor.

[0045] As shown in ​ The utility model also provides a range hood, adopts the oil guide structure of the range hood, and includes a range hood body, the range hood body has a suction panel 1 and a smoke collecting cavity a located at the back side of the suction panel 1, the bottom of the smoke collecting cavity a is provided with an oil outlet hole a1, the bottom of the range hood body is also connected with an oil cup 6, and the oil outlet hole a1 is communicated with the oil cup 6.

[0046] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement or improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An oil guide structure of a smoke machine, characterized by comprising: The application relates to an oil suction device for an engine. The oil suction device comprises an air suction panel (1) provided with an air suction port (11); an oil guide (2) connected to the upper edge of the air suction port (11) and used for guiding the oil on the upper edge of the air suction port (11) to the rear side of the air suction port (11); and a reinforcing plate (3) arranged on the rear side of the air suction panel (1) and provided with an avoiding port arranged around the air suction port (11), wherein the lower edge of the avoiding port is provided with a first extension plate (31) extending from front to rear and a second extension plate (32) formed by the extension of the first extension plate (31), and the second extension plate (32) is arranged in a downwardly-inclined manner from front to rear, and the lower edge of the oil guide (2) is projected downwardly on the second extension plate (32). The edge of the air suction port (11) is provided with an air guide ring (12) arranged around the air suction port (11), the air guide ring (12) is in a necked shape, the upper edge of the air guide ring (12) is provided with an upper turning edge (13) arranged in an upwardly-inclined manner from front to rear, the oil guide (2) is connected to the upper turning edge (13), the lower edge of the air guide ring (12) is provided with a lower turning edge (14) arranged in a downwardly-inclined manner from front to rear, and the lower edge of the lower turning edge (14) is in abutment with the first extension plate (31). The oil guide (2) comprises a connecting plate (21) connected to the upper turning edge (13) and an oil guide plate (22) extending to the rear side of the air suction port (11), and the lower edge of the oil guide plate (22) is projected downwardly on the second extension plate (32).

2. The oil guide structure of the range hood according to claim 1, wherein The edge of the avoiding port is provided with an oil blocking ring (33), and the first extension plate (31) is connected to the lower edge of the oil blocking ring (33).

3. The oil guide structure of the hood according to claim 2, wherein The upper edge of the oil blocking ring (33) is provided with an oil blocking plate (34) arranged along the width direction of the air suction port (11), the oil blocking plate (34) is in an L shape, comprising an extension part extending rearwardly from the upper edge of the oil blocking ring (33) and an oil blocking part formed by the rear edge of the extension part being turned upwardly.

4. The oil guide structure of the range hood according to claim 1, wherein The oil suction device further comprises an oil receiving box (4) connected to the reinforcing plate (3) and arranged below the avoiding port, the width of the oil receiving box (4) is greater than the width of the avoiding port, the second extension plate (32) is projected downwardly in the oil receiving box (4), and the oil receiving box (4) is provided with an oil discharging hole (41).

5. The oil guide structure of the hood according to claim 4, wherein The edge of the side of the oil discharging hole (41) away from the reinforcing plate (3) is extended downwardly with an oil guide plate (42) used for guiding the oil to the rear side of the air suction panel (1) so that the oil flows downwardly along the rear side of the air suction panel (1).

6. The oil guide structure of the range hood according to claim 1, wherein ​ 7. The oil guide structure of the hood according to claim 6, wherein ​ 8. The oil guide structure of the range hood according to claim 1, wherein The application also comprises a flap assembly (5) which comprises a driving structure (51) connected to the rear side of the air suction panel (1) and a flap (52) connected to the second extension panel (32) through a hinge (35), wherein the driving structure (51) is used to drive the flap (52) to rotate so as to open or close the air suction port (11).

9. The oil guide structure of the hood according to claim 8, wherein The driving structure (51) comprises a driving motor (511), a first connecting rod (512) and a second connecting rod (513), wherein the driving motor (511) is arranged on the rear side of the air suction panel (1), the output end of the driving motor (511) is connected to the first connecting rod (512), the first connecting rod (512) is connected to the input end of the second connecting rod (513), the flap (52) is provided with a connecting seat (514), the output end of the second connecting rod (513) is connected to the connecting seat (514), and the rear side of the air suction panel (1) is provided with a motor cover (515) in which the driving motor (511) is arranged.

10. A range hood employing the oil guide structure of any one of claims 1 to 9, characterized by, The application further comprises a smoke machine main body which comprises the air suction panel (1) and a smoke collecting cavity (a) arranged on the rear side of the air suction panel (1), wherein the bottom of the smoke collecting cavity (a) is provided with an oil outlet hole (a1), the bottom of the smoke machine main body is further connected to an oil cup (6), and the oil outlet hole (a1) is in communication with the oil cup (6).