Oil way structure and range hood with same

Abstract

The utility model discloses an oil way structure and a range hood with the oil way structure, the oil way structure comprises a range hood main body which is provided with a smoke collecting cavity, an oil guide cavity, an oil dripping hole communicated with the smoke collecting cavity and an oil guide hole communicated with the oil guide cavity; the main oil cup is connected below the smoke collecting cavity, and an opening of a containing cavity of the main oil cup corresponds to the oil dripping hole; the auxiliary oil cup is connected below the oil guide cavity, and an opening of a containing cavity of the auxiliary oil cup corresponds to the oil guide hole; the oil guide piece is connected to the range hood body and located below the main oil cup, the oil guide piece is provided with an oil guide groove, and an oil outlet of the oil guide groove communicates with the oil guide cavity; compared with the prior art, the oil way structure is provided with the main oil cup, the oil guide piece, the oil guide cavity and the auxiliary oil cup, the main oil cup receives oil liquid discharged from the smoke collecting cavity, the oil guide piece receives oil liquid dripping from the outer side wall face of the main oil cup and guides the oil liquid into the oil guide cavity, and the auxiliary oil cup receives oil liquid discharged from the oil guide cavity. Oil hung on the main oil cup can be prevented from dropping on the table top of a cooking bench.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to an oil circuit structure and a range hood having the same. Background Art

[0002] With the existing oil circuit structure, especially the top-suction oil circuit structure, when the oil circuit structure is working, the oil smoke flows into the smoke collecting chamber under the action of the smoke exhaust fan of the oil circuit structure, and the oil and water mixture in the oil smoke will adhere to the outer surface of the oil cup. The oil smoke will also flow along the panel when flowing into the smoke collecting chamber, and cause the oil and water mixture to adhere to the panel. When the oil and water mixture on the main oil cup adheres to a certain amount, it will gather into oil droplets and drip down onto the cooking table or into the pot. When the oil and water mixture on the panel adheres to a certain amount, it will also flow along the panel and eventually drip into the stove or pot, affecting the user experience. Utility Model Content

[0003] The purpose of the present utility model is to provide an oil circuit structure and a range hood having the same, which are used to solve the above-mentioned technical problems.

[0004] An oil circuit structure for a range hood, comprising:

[0005] The range hood body comprises a smoke collecting chamber, an oil guiding chamber, an oil dripping hole communicating with the smoke collecting chamber, and an oil guiding hole communicating with the oil guiding chamber;

[0006] The main oil cup is connected to the bottom of the smoke collecting chamber, and the opening of the receiving chamber corresponds to the oil dripping hole;

[0007] A secondary oil cup, which is connected to the bottom of the oil guide cavity, and the opening of its accommodating cavity corresponds to the oil guide hole;

[0008] The oil guide member is connected to the range hood body and is located below the main oil cup. The oil guide member has an oil guide groove, and the oil outlet of the oil guide groove is connected to the oil guide cavity.

[0009] According to one embodiment of the present invention, the bottom surface of the main oil cup is tilted downward from front to rear, and at least the downward projection of the rear edge of the bottom surface of the main oil cup falls into the oil guide groove.

[0010] According to one embodiment of the present invention, the range hood body has a front panel facing the user side and a back panel located behind the front panel. The back panel is connected to the range hood body and is located below the smoke collecting chamber. The front panel is connected to the back panel. An oil guide chamber is formed between the front panel and the back panel. The oil guide member is provided at the upper edge of the front panel, and its oil outlet is connected to the oil guide chamber. The auxiliary oil cup is connected to the bottom of the back panel or the front panel, and the downward projection of the lower edge of the front panel falls into the auxiliary oil cup.

[0011] According to one embodiment of the present utility model, an oil guide plate is provided in the oil guide cavity, the upper edge of the oil guide plate extends upward to the oil outlet of the oil guide member, and is used to guide the oil flowing out of the oil outlet downward, the lower edge of the oil guide plate is connected to the inner wall surface of the back plate, and an oil outlet hole is provided at the connection between the lower edge of the oil guide plate and the back plate.

[0012] According to one embodiment of the present invention, the range hood body has a top plate, which is provided with an air intake and a avoidance hole corresponding to the oil dripping hole. The air intake is located at the rear side of the oil dripping hole, and the main oil cup is connected to the top plate.

[0013] According to one embodiment of the present invention, the top plate is tilted downward from front to back, the shape of the bottom plate of the smoke collecting chamber is adapted to the inclination of the top plate, an oil collecting trough surrounding the air suction port is formed between the smoke collecting chamber and the top plate, the oil collecting trough is connected to the side of the smoke collecting chamber where the oil dripping hole is provided, and the front side wall of the oil collecting trough forms an oil guide surface for guiding the oil in the smoke collecting chamber outside the oil collecting trough located in front of the air suction port to the rear side of the air suction port.

[0014] According to one embodiment of the present invention, a sink is provided in the portion of the smoke collecting chamber where the oil dripping hole is provided. The oil dripping hole is provided at the bottom of the sink, and a corresponding concave structure is provided on the portion of the top plate corresponding to the sink.

[0015] According to one embodiment of the present invention, air-guiding and liquid-inducing parts are provided on both sides of the air suction port, and liquid-inducing grooves are provided on the air-guiding and liquid-inducing parts, and the liquid-inducing grooves are connected to the oil collecting groove.

[0016] According to one embodiment of the present invention, it also includes an oil receiving pan, which is arranged in the oil guide chamber and below the smoke exhaust fan of the range hood. The main body of the oil receiving pan is tilted downward from front to back, and the downward projection of the rear edge of the main body of the oil receiving pan falls on the front side of the air suction port and is located outside the oil collecting tank. An oil guide portion is provided on at least one side of the oil receiving pan, and the oil guide portion extends to the side of the smoke collecting chamber where the oil drip hole is provided.

[0017] A range hood adopts the above-mentioned oil circuit structure and further includes side baffles, which are arranged on the left and right sides of the range hood body.

[0018] Compared with the prior art, the oil circuit structure of the present invention has the following advantages:

[0019] The oil circuit structure of the present invention is provided with a main oil cup, an oil guide piece, an oil guide cavity and a secondary oil cup. The main oil cup receives the oil discharged from the smoke collecting cavity, the oil guide piece receives the oil dripping from the outer wall of the main oil cup and guides the oil into the oil guide cavity, and the secondary oil cup receives the oil discharged from the oil guide cavity, which can prevent the oil hanging on the main oil cup from dripping onto the countertop of the stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the oil circuit structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the oil circuit structure of the present utility model;

[0022] Figure 3 for Figure 2 A magnified view of middle A;

[0023] In the figure: 1. Range hood body, 11. Smoke collecting chamber, 111. Oil drip hole, 112. Oil collecting trough, 12. Oil guide chamber, 121. Oil guide hole, 13. Panel, 14. Back panel, 15. Oil guide plate, 16. Top plate, 17. Air intake, 18. Air and liquid guide member, 181. Liquid guide trough, 2. Main oil cup, 3. Auxiliary oil cup, 4. Oil guide member, 41. Oil guide trough, 5. Oil receiving tray, 51. Oil guide part, 6. Smoke exhaust fan, 7. Side baffle.

[0024] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0029] See also Figures 1 to 3 The utility model discloses an oil circuit structure, which is used for a range hood, including a range hood body 1, a main oil cup 2, a subsidiary oil cup 3 and an oil guide member 4. The range hood body 1 has a smoke collecting chamber 11, an oil guide chamber 12, an oil dripping hole 111 connected to the smoke collecting chamber 11, and an oil guide hole 121 connected to the oil guide chamber 12; the main oil cup 2 is connected to the bottom of the smoke collecting chamber 11, and the opening of its accommodating chamber corresponds to the oil dripping hole 111; the subsidiary oil cup 3 is connected to the bottom of the oil guide chamber 12, and the opening of its accommodating chamber corresponds to the oil guide hole 121; the oil guide member 4 is connected to the range hood body 1 and is located below the main oil cup 2. The oil guide member 4 has an oil guide groove 41, and the oil outlet of the oil guide groove 41 is connected to the oil guide chamber 12. When the oil circuit structure of the present invention is applied to the range hood, when the exhaust fan of the range hood is started, negative pressure will be formed in the smoke collecting chamber 11. The oil smoke generated by the user's cooking will flow into the smoke collecting chamber 11 under the action of the negative pressure. At least the front side and bottom of the main oil cup 2 will have oil smoke passing through. The mixture of oil and water in the oil smoke will adhere to the front side and bottom of the main oil cup 2. When a certain amount of oil is adhered, the oil on the front side of the main oil cup 2 flows along the front side of the main oil cup 2 to the front side. After reaching the lower edge, it flows along the bottom surface of the main oil cup 2 and gathers at the lowest point of the bottom surface of the main oil cup 2. When there is enough oil, it drips from the lowest point of the bottom surface of the main oil cup 2 into the oil guide groove 41 of the oil guide part 4, and enters the oil guide cavity 12 from the oil outlet of the oil guide part 4, gathers in the oil guide cavity 12, and is discharged into the auxiliary oil cup 3 through the oil guide hole 121 connected to the oil guide cavity 12; at the same time, the oil in the smoke collecting chamber 11 is discharged into the main oil cup 2 through the oil dripping hole 111 and is received by the main oil cup 2.

[0030] The oil circuit structure of the present invention is provided with a main oil cup 2, an oil guide member 4, an oil guide cavity 12 and a secondary oil cup 3. The main oil cup 2 receives the oil discharged from the smoke collecting cavity 11, the oil guide member 4 receives the oil dripping from the outer wall of the main oil cup 2 and introduces the oil into the oil guide cavity 12, and the secondary oil cup 3 receives the oil discharged from the oil guide cavity 12, which can prevent the oil hanging on the main oil cup 2 from dripping onto the countertop of the stove.

[0031] In the oil circuit structure of the present invention, the bottom surface of the main oil cup 2 is tilted downward from front to back, and at least the downward projection of the rear edge of the bottom surface of the main oil cup 2 falls into the oil guide groove 41. After the oil circuit structure of the present invention is applied to the range hood, when the exhaust fan of the range hood is started, a negative pressure will be formed in the smoke collecting chamber 11. The oil smoke generated by the user's cooking will flow into the smoke collecting chamber 11 under the action of the negative pressure. When the oil smoke flows into the smoke collecting chamber 11, it will rush to the bottom surface and front surface of the main oil cup 2 under the action of inertia. The front surface and bottom surface of the main oil cup 2 will be covered with oil. Since the bottom surface of the main oil cup 2 is tilted downward from front to back, when the oil accumulates to a certain amount, the oil on the front surface of the main oil cup 2 will flow to the bottom surface of the main oil cup 2. The lower edge of the front surface is guided to the bottom of the main oil cup 2, and flows along the bottom of the main oil cup 2 together with the oil on the bottom of the main oil cup 2, and gathers at the rear edge of the bottom of the main oil cup 2. After gathering to a certain amount, it drips and is received by the oil guide groove 41. Then, after the oil in the oil guide groove 41 accumulates to a certain amount, it is guided into the oil guide cavity 12 by the oil outlet of the oil guide groove 41, and then discharged from the bottom of the oil guide cavity 12 into the auxiliary oil cup 3 and received by the auxiliary oil cup 3, which can prevent the oil hanging on the main oil cup 2 from dripping onto the countertop of the stove.

[0032] The oil circuit structure of the present utility model is that the range hood body 1 has a front panel 13 facing the user side and a back panel 14 located behind the front panel 13. The back panel 14 is connected to the range hood body 1 and is located below the smoke collecting chamber 11. The front panel 13 is connected to the back panel 14. An oil guide chamber 12 is formed between the front panel 13 and the back panel 14. The oil guide member 4 is provided at the upper edge of the front panel 13, and its oil outlet is connected to the oil guide chamber 12. After the oil circuit structure of the present invention is applied to the range hood, when the smoke exhaust fan of the range hood is running, oil smoke enters the smoke collecting chamber 11 under the action of negative pressure, and oil will adhere to and gather on the surface of the main oil cup 2. The speed at which the oil gathers on the outer wall of the main oil cup 2 is relatively fast. The oil dripping from the main oil cup 2 flows directly from the front plate 13, which will affect the appearance and reduce user satisfaction. Therefore, an oil guide chamber 12 is provided between the front plate 13 and the back plate 14, so that the oil gathered on the outer wall of the main oil cup 2 flows through the oil guide chamber 12. The user cannot see the flow path of the oil on the outer wall of the main oil cup 2, thereby improving the appearance of the range hood.

[0033] In the oil circuit structure of the present invention, the auxiliary oil cup 3 is connected to the bottom of the back plate 14 or the front plate 13, and the downward projection of the lower edge of the front plate 13 falls into the auxiliary oil cup 3. After the oil circuit structure of the present invention is applied to the range hood, when the exhaust fan of the range hood is in operation, as the oil smoke flows from top to bottom and tilted backward into the smoke collecting chamber 11, part of the oil smoke will flow upward along the front plate 13. During the flow of the oil smoke, the oil liquid formed by the mixture of oil and water in the oil smoke will also adhere to the front plate 13. After a certain amount is collected, it will flow along the front plate 13 and then drip into the auxiliary oil cup 3 and be received by the auxiliary oil cup 3. This can prevent the oil dripping from the front plate 13 from directly falling onto the stove body or pots and pans, affecting the user experience.

[0034] In the oil circuit structure of the present invention, an oil guide plate 15 is provided within the oil guide chamber 12. The upper edge of the oil guide plate 15 extends upward to the oil outlet of the oil guide member 4, directing the oil flowing out of the oil outlet downward. The lower edge of the oil guide plate 15 is connected to the inner wall of the back plate 14, and an oil outlet hole is provided at the junction of the lower edge of the oil guide plate 15 and the back plate 14. After the oil in the oil guide groove 41 flows out through the oil outlet of the oil guide groove 41, it flows along the oil guide plate 15 and is collected at the bottom of the oil guide plate 15. It then flows out through the oil outlet hole at the junction of the lower edge of the oil guide plate 15 and the back plate 14, flows along the portion of the back plate 14 below the oil guide plate 15, and finally is collected within the oil guide chamber 12, entering the auxiliary oil cup 3 through the oil guide hole 121 at the bottom of the oil guide chamber 12. In the present invention, the oil guide plate 15 is arranged to be tilted downward from front to back. After the oil in the oil guide groove 41 flows out of the oil guide groove 41, it flows tilted downward along the oil guide plate 15. The oil guide plate 15 guides the oil to the back plate 14 to prevent the oil from dripping directly from the oil guide plate 15, which will cause noise, and also prevent the oil from adhering to the inner side of the front plate 13.

[0035] The oil circuit structure of the present invention comprises a range hood body 1 having a top plate 16, which is provided with an air intake 17 and a relief hole corresponding to the oil dripping hole 111. The air intake 17 is located behind the oil dripping hole 111, and the main oil cup 2 is connected to the top plate 16. After the main oil cup 2 is connected to the top plate 16, it is located behind the air intake 17 and does not block the flow of oil smoke toward the air intake 17.

[0036] In the oil circuit structure of the present invention, the top plate 16 is arranged to be tilted downward from front to back, the shape of the bottom plate of the smoke collecting chamber 11 is adapted to the inclination of the top plate 16, and an oil collecting trough 112 surrounding the air suction port 17 is formed between the smoke collecting chamber 11 and the top plate 16. The oil collecting trough 112 is communicated with a side of the smoke collecting chamber 11 where the oil dripping hole 111 is provided, and the front side wall of the oil collecting trough 112 forms an oil guide surface for guiding the oil in the smoke collecting chamber 11 outside the oil collecting trough 112 and located in front of the air suction port 17 to the rear side of the air suction port 17. The oil circuit structure of the present invention, after being applied to the range hood, when the smoke exhaust fan is running, the oil smoke enters the smoke collecting chamber 11 through the air suction port 17, and the two edges of the air suction port 17 will be covered with oil. The oil covered on the edges of the air suction port 17 will fall into the smoke collecting chamber 11 and into the oil collecting tank 112 under the drive of the oil smoke. Since the top plate 16 is tilted downward from front to back, the oil in the oil collecting tank 112 will gather in the part of the oil collecting tank 112 located behind the air suction port 17. Since the oil collecting tank 112 is connected to the smoke collecting chamber 11 with the oil dripping hole 111, the oil in the oil collecting tank 112 will enter the side of the smoke collecting chamber 11 with the oil dripping hole 111, and then be discharged through the oil dripping hole 111.

[0037] In the oil circuit structure of the present invention, a trough is provided in the portion of the smoke collecting chamber 11 where the oil drip hole 111 is located. The oil drip hole 111 is located at the bottom of the trough, and a corresponding recessed structure is provided in the portion of the top plate 16 corresponding to the trough. The trough is used to collect oil. During the operation of the smoke exhaust fan of the range hood, oil generated in the smoke collecting chamber 11 will collect in the trough. Oil in the oil collecting tank 112 will also collect in the trough on the side of the smoke collecting chamber 11 where the oil drip hole 111 is located, and is ultimately discharged through the oil drip hole 111.

[0038] In the oil circuit structure of the present invention, air and liquid guiding members 18 are provided on both sides of the air inlet 17. Liquid guiding members 18 are provided with liquid guiding grooves 181, which are connected to the oil collecting tank 112. The liquid guiding grooves 181 include a liquid guiding surface and a liquid guiding groove 181 located below the liquid guiding surface. The liquid guiding surface on each side is inclined from bottom to top in a direction away from the air inlet 17, and the downward projection of the lower edge of the liquid guiding surface falls into the liquid guiding groove 181. When the oil smoke passes through the liquid guiding surface, the oil and water mixture in the oil smoke will adhere to the liquid guiding surface and accumulate on the liquid guiding surface. When a certain amount of oil accumulates, it will flow along the liquid guiding surface and drip through the lower edge of the liquid guiding surface into the liquid guiding groove 181 near the liquid guiding groove 181. Then, it will enter the oil collecting tank 112 through the liquid guiding groove 181. The oil in the oil collecting tank 112 will be collected in the trough on the side of the smoke collecting chamber 11 where the oil dripping hole 111 is provided, and finally discharged through the oil dripping hole 111. This can prevent the oil on the liquid guide surface from dripping to the outside of the range hood through the air suction port 17.

[0039] The oil circuit structure of the present invention also includes an oil receiving pan 5, which is arranged in the oil guide chamber 12 and is located below the smoke exhaust fan 6 of the range hood. The main body of the oil receiving pan 5 is tilted downward from front to back, and the downward projection of the rear edge of the main body of the oil receiving pan 5 falls on the front side of the air intake port 17 and is located outside the oil collecting tank 112. After the oil guide structure of the present invention is applied to the range hood, when the range hood is started, the smoke exhaust fan 6 of the range hood is running, and the oil smoke generated by the user's cooking enters the smoke collecting chamber 11, then flows to the air inlet side of the smoke exhaust fan 6 and is discharged by the smoke exhaust fan 6; after the smoke exhaust fan 6 finishes running, the oil on the volute of the smoke exhaust fan 6 is discharged downward through the oil discharge hole at the bottom of the volute, and then is received by the oil receiving pan 5, flows along the oil receiving pan 5, and is finally discharged through the oil outlets on both sides of the oil receiving pan 5. Since the oil collecting pan 5 is provided, the oil discharged from the volute of the smoke exhaust fan 6 will not be discharged directly onto the bottom plate of the smoke collecting chamber 11, which can avoid the oil splashing when the distance between the bottom of the volute of the smoke exhaust fan 6 and the bottom plate of the smoke collecting chamber 11 is too high, which not only causes noise but also has the risk of splashing out of the smoke collecting chamber 11.

[0040] In the oil circuit structure of the present invention, an oil guide portion 51 is provided on at least one side of the oil receiving pan 5, and the oil guide portion 51 extends to the side of the smoke collecting chamber 11 where the oil drip hole 111 is provided. The oil on the volute of the smoke exhaust fan 6 flows out through the oil drain hole at the bottom of the volute and drips onto the oil receiving pan 5, then flows from front to back along the bottom surface of the oil receiving pan 5, then gathers at the rear end of the oil receiving pan 5, and finally is discharged into the oil guide portion 51 through the oil outlet at the rear end of the oil receiving pan 5, flows along the oil guide portion 51 and finally is discharged through the oil outlet end of the oil guide portion 51. In the bellows assembly of the present invention, the oil outlet end of the oil guide portion 51 is located on the side of the smoke collecting chamber 11 where the oil drip hole 111 is provided, and the oil on the volute of the smoke exhaust fan 6 is finally discharged to the side of the smoke collecting chamber 11 where the oil drip hole 111 is provided, and then is discharged from the air collecting chamber through the oil drip hole 111. In actual application, the oil guide portion 51 is tilted downward from front to back so that the oil outlet end of the oil guide portion 51 is as close as possible to the bottom of the smoke collecting chamber 11. When the oil is discharged through the oil guide portion 51, it is prevented from splashing and falling to the outside of the smoke collecting chamber 11.

[0041] The present invention further discloses a range hood that utilizes the aforementioned oil circuit structure and further includes side baffles 7 disposed on the left and right sides of the range hood body 1. When the exhaust fan of the range hood is activated, cooking fumes flow into the smoke collecting chamber 11 under the action of the exhaust fan. During this flow, the side baffles 7 block the cooking fumes, preventing them from spreading outside the side baffles 7 and contaminating the kitchen air.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oil circuit structure for a range hood, characterized in that: include: A range hood body (1) comprising a smoke collecting chamber (11), an oil guiding chamber (12), an oil dripping hole (111) communicating with the smoke collecting chamber (11), and an oil guiding hole (121) communicating with the oil guiding chamber (12); A main oil cup (2), connected to the lower side of the smoke collecting chamber (11), wherein the opening of the accommodating chamber corresponds to the oil dripping hole (111); A secondary oil cup (3), connected to the lower portion of the oil guide cavity (12), the opening of the accommodating cavity of the secondary oil cup (3) corresponding to the oil guide hole (121); An oil guide member (4) is connected to the range hood body (1) and is located below the main oil cup (2). The oil guide member (4) has an oil guide groove (41), and an oil outlet of the oil guide groove (41) is connected to the oil guide cavity (12).

2. The oil circuit structure according to claim 1, characterized in that: The bottom surface of the main oil cup (2) is tilted downward from front to rear, and at least the downward projection of the rear edge of the bottom surface of the main oil cup (2) falls into the oil guide groove (41).

3. The oil circuit structure according to claim 1, characterized in that: The range hood body (1) comprises a front panel (13) facing the user side and a back panel (14) located behind the front panel (13); the back panel (14) is connected to the range hood body (1) and is located below the smoke collecting chamber (11); the front panel (13) is connected to the back panel (14); an oil guide chamber (12) is formed between the front panel (13) and the back panel (14); the oil guide member (4) is provided at the upper edge of the front panel (13); an oil outlet thereof is connected to the oil guide chamber (12); the auxiliary oil cup (3) is connected to the back panel (14) or below the front panel (13); and the downward projection of the lower edge of the front panel (13) falls into the auxiliary oil cup (3).

4. The oil circuit structure according to claim 3, characterized in that: An oil guide plate (15) is provided in the oil guide cavity (12), the upper edge of the oil guide plate (15) extending upward to the oil outlet of the oil guide member (4) for guiding the oil flowing out of the oil outlet downward, the lower edge of the oil guide plate (15) being connected to the inner wall surface of the back plate (14), and an oil outlet hole being provided at the junction of the lower edge of the oil guide plate (15) and the back plate (14).

5. The oil circuit structure according to claim 1, characterized in that: The range hood body (1) has a top plate (16), and the top plate (16) is provided with an air intake (17) and an avoidance hole corresponding to the oil dripping hole (111), the air intake (17) is located at the rear side of the oil dripping hole (111), and the main oil cup (2) is connected to the top plate (16).

6. The oil circuit structure according to claim 5, characterized in that: The top plate (16) is tilted downward from front to back, and the shape of the bottom plate of the smoke collecting chamber (11) is adapted to the inclination of the top plate (16). An oil collecting trough (112) surrounding the air suction port (17) is formed between the smoke collecting chamber (11) and the top plate (16). The oil collecting trough (112) is connected to a side of the smoke collecting chamber (11) provided with the oil dripping hole (111). The front side wall of the oil collecting trough (112) forms an oil guide surface for guiding the oil in the smoke collecting chamber (11) located in front of the air suction port (17) outside the oil collecting trough (112) to the rear side of the air suction port (17).

7. The oil circuit structure according to claim 6, characterized in that: The portion of the smoke collecting chamber (11) where the oil dripping hole (111) is provided is provided with a sink, the oil dripping hole (111) is provided at the bottom of the sink, and a corresponding concave structure is provided on the portion of the top plate (16) corresponding to the sink.

8. The oil circuit structure according to claim 6, characterized in that: Air and liquid guiding parts (18) are provided on both sides of the air suction port (17), and liquid guiding grooves (181) are provided on the air and liquid guiding parts (18), and the liquid guiding grooves (181) are communicated with the oil collecting groove (112).

9. The oil circuit structure according to claim 6, characterized in that: The utility model further comprises an oil receiving pan (5), wherein the oil receiving pan (5) is arranged in the oil guide chamber (12) and is located below the smoke exhaust fan (6) of the range hood, and the main body of the oil receiving pan (5) is tilted downward from front to back, and the downward projection of the rear edge of the main body of the oil receiving pan (5) falls on the front side of the air inlet (17) and is located outside the oil collecting groove (112), and at least one side of the oil receiving pan (5) is provided with an oil guide portion (51), and the oil guide portion (51) extends to the side of the smoke collecting chamber (11) where the oil drip hole (111) is provided.

10. A range hood, using the oil circuit structure according to any one of claims 1 to 9, characterized in that: It also includes side baffles (7), which are arranged on the left and right sides of the range hood main body (1).

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