Range hood
By designing a switchable oil guide plate and oil collection unit, the problem of grease dripping from the oil guide plate is solved, and efficient grease collection and effective extraction of oil smoke are achieved.
Patent Information
- Application Number
- CN202310807836.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-03
- Publication Date
- 2025-01-03
AI Technical Summary
The existing oil guide plate of the range hood is easy to drip grease onto the stove, and has a simple structure, which needs further improvement.
An oil guide plate that can be switched between a first position and a second position is designed. The oil collecting unit includes an oil leakage hole and a closing member. The opening and closing of the oil leakage hole is controlled by an abutment member. The grease flows into the fume hood or the oil cup at different positions respectively. The rotation switching of the oil guide plate is realized in combination with a driving device.
It effectively prevents or reduces grease from dripping from the oil guide plate to the stove, and improves the grease collection efficiency and oil fume extraction effect of the oil guide plate.
Smart Images
Figure CN119245083A_ABST
Abstract
Description
[Technical field]
[0001] The present application relates to the field of range hoods. [Background technology]
[0002] In Asia, due to the traditional cooking habit of stir-frying, the oil content in the smoke produced during cooking is particularly high. Therefore, the range hood used to extract the oil smoke produced during cooking has become an important household appliance that is indispensable for daily life. As people's requirements for the quality of life continue to increase, range hoods are also constantly upgraded and improved. At present, there are many range hoods with oil guide plates. However, the grease attached to the oil guide plates of the existing range hoods with oil guide plates is easy to drip onto the stove, especially when the oil guide plates are in an extended and open state for guiding smoke. In addition, the existing range hood scheme with oil guide plates has a very simple structure and needs to be further improved.
[0003] Unless there is sufficient evidence to support it, the prior art described herein does not mean that the prior art is known to ordinary technicians in the field involved in this application before the filing date of this application. [Summary of the invention]
[0004] One purpose of the embodiments of the present application is to provide an improved range hood in view of at least one of the above technical problems and / or other possible technical problems not mentioned in the present application.
[0005] One embodiment of the present application relates to a range hood, comprising a smoke hood, an oil guide plate suitable for being fixed to the smoke hood, and an oil cup suitable for being fixed to the smoke hood, wherein an oil collecting unit is arranged at one end of the oil guide plate, and the oil collecting unit comprises a slot body provided with an oil leakage hole and a closure member for closing the oil leakage hole; the smoke hood is provided with an abutment member; the oil guide plate is configured to be suitable for switching between a first position and a second position; when the oil guide plate is in the first position, the abutment member acts on the closure member to open the oil leakage hole, and the grease in the slot body flows through the opened oil leakage hole to the smoke hood or directly flows into the oil cup; when the oil guide plate is in the second position, the abutment member releases the action on the closure member, and the closure member is reset and closes the oil leakage hole.
[0006] When the oil guide plate is in the second position, the trough body is filled with grease; when the oil guide plate is in the first position, the grease contained in the trough body is discharged through the oil leakage hole and flows into the smoke hood or directly flows into the oil cup, thereby avoiding or reducing the grease attached to the oil guide plate from dripping onto the stove.
[0007] In one or some embodiments, when the oil guide plate is in the first position, the oil guide plate is tilted backward and downward, and the oil collecting unit is arranged at the bottom of the oil guide plate; the oil collecting unit is arranged on the inner surface of the oil guide plate. Thus, the oil collecting unit is convenient for collecting grease attached to the oil guide plate.
[0008] In one or some embodiments, when the oil guide plate is in the second position, the oil guide plate is tilted forward and downward, and the oil collecting unit is arranged at the bottom of the oil guide plate, so that the oil collecting unit can collect the grease attached to the oil guide plate.
[0009] In one or some embodiments, the smoke hood includes an inner cavity and an air flow inlet for air to pass through and flow into the inner cavity; when the oil guide plate is in the first position, the oil guide plate blocks the air flow inlet; when the oil guide plate is in the second position, the oil guide plate is suitable for guiding oil smoke to the air flow inlet.
[0010] In one or some embodiments, a driving device is included, which is configured to drive the oil guide plate to rotate around its top end to switch between the first position and the second position.
[0011] In one or some embodiments, when the oil guide plate is in the first position, the angle between the outer surface of the oil guide plate and the horizontal plane is an acute angle; when the oil guide plate is in the second position, the angle between the outer surface of the oil guide plate and the horizontal plane is an obtuse angle. Thus, the effect of the grease attached to the oil guide plate being collected by the tank body and the smoke collection effect when the oil smoke is extracted are taken into consideration.
[0012] In one or some embodiments, when the oil guide plate is in the second position, the bottom end of the oil guide plate is also the bottom end of the entire range hood, thereby helping to improve the smoke collection effect.
[0013] In one or some embodiments, the oil collecting unit is arranged in the middle of the inner surface of the oil guide plate; the bottom of the inner surface of the oil guide plate is provided with a thickened layer protruding relative to the inner surface of the oil guide plate; the thickened layer extends from the left and right edges of the oil guide plate toward the oil collecting unit, so as to guide the grease attached to the oil guide plate to the oil collecting unit when the oil guide plate is in the first position and the second position. This helps to improve the effect of collecting the grease attached to the oil guide plate to the tank body.
[0014] In one or some embodiments, the top surface of the thickened layer is connected to the inner surface of the oil guide plate through a left step surface and a right step surface; the oil collecting unit is arranged between the left step surface and the right step surface; when the oil guide plate is in the first position and the second position, the left step surface and the right step surface extend obliquely from the left and right sides toward the oil collecting unit, respectively, so as to guide the grease attached to the oil guide plate to the oil collecting unit. Thus, it is helpful to improve the effect of the grease attached to the oil guide plate being collected to the tank body.
[0015] In one or some embodiments, the fume collecting hood includes a clearance groove; when the oil guide plate is in the first position, the oil collecting unit is placed in the clearance groove.
[0016] In one or some embodiments, the closing member includes a valve core and an elastic member; when the oil guide plate is in the first position, the valve core is disengaged from the oil leakage hole under the action of the abutment member, so that the oil leakage hole is open; when the oil guide plate is in the second position, the valve core is closed by the action of the elastic member; when the oil guide plate switches from the second position to the first position, the abutment member pushes against the valve core, so that the valve core moves away from the oil leakage hole, and the elastic member is deformed under the action of the valve core; when the oil guide plate is in the second position, the elastic member restores the deformation and applies force to the valve core, so that the valve core closes the oil leakage hole.
[0017] In one or some embodiments, the valve core includes a guide slope; when the oil guide plate switches from the second position to the first position, the free end of the abutment member abuts against the guide slope and slides along the guide slope, so that the valve core moves away from the oil leakage hole. Thus, the structure is simple and practical, low in cost, and durable.
[0018] In one or some embodiments, the end of the guide slope is connected to an abutment surface; the abutment surface is perpendicular to the inner surface of the oil guide plate; the extension direction of the free end of the abutment member is parallel to the inner surface of the oil guide plate; when the oil guide plate is in the first position, the free end of the abutment member abuts against the abutment surface.
[0019] In one or some embodiments, a side wall is formed between the bottom edge of the oil guide plate and the oil collecting unit; when the oil guide plate is in the first position, the side wall abuts against the abutment member.
[0020] In one or some embodiments, the trough body includes a bottom wall and an opening opposite to the bottom wall; the oil leakage hole is arranged on the bottom wall; the closing member is arranged in the trough body; when the oil guide plate is in the first position and the second position, the opening is located above the bottom wall.
[0021] It should be noted here that directional expressions such as "below", "bottommost end", "bottom", "middle" etc. appearing in this application, unless otherwise specified, are based on the usual usage state of the range hood.
[0022] It should be pointed out here that the “first” and “second” appearing in this specification are only used for descriptive purposes and are not used to indicate relative importance; moreover, they are not a definition of the quantity of the features they define; in addition, they are not a definition of the logical or sequential relationship of the features they define.
[0023] The above invention content of the present application is not intended to describe all possible implementations of the present application. Throughout the application, guidance is provided by listing examples in many places, and these examples can be used in various possible combinations.
Brief Description of the Drawings
[0024] The following drawings are only used to illustrate and explain the present application, and do not limit the scope of the present application, wherein:
[0025] Figure 1 is a structural schematic diagram of a range hood embodiment of the present application when the oil guide plate is in a first position;
[0026] Figure 2 is a structural schematic diagram of a range hood embodiment of the present application when the oil guide plate is in a first position;
[0027] Figure 3 This is a structural schematic diagram of an oil guide plate of a range hood embodiment of the present application;
[0028] Figure 4 This is a structural schematic diagram of an oil guide plate of a range hood embodiment of the present application;
[0029] Figure 5 is along Figure 4 Sectional view along line AA;
[0030] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;
[0031] Figure 7 This is a schematic structural diagram of a range hood embodiment of the present application when an oil guide plate is not installed;
[0032] Figure 8 is along Figure 7 Sectional view along line AA;
[0033] Fig. 9 yes Figure 8 A partial enlarged view of point B in the middle;
[0034] Fig.10 is a structural schematic diagram of a range hood embodiment of the present application when the oil guide plate is in the second position;
[0035] Fig.11 is along Fig.10 Sectional view along line AA;
[0036] Fig.12 yes Fig.11 A partial enlarged view of point B in the middle;
[0037] Fig.13 is a structural schematic diagram of a range hood embodiment of the present application;
[0038] Fig.14 is along Fig.13 Sectional view along line AA;
[0039] Fig.15 yes Fig.14 A partial enlarged view of point B in the middle;
[0040] Fig.16 is a structural schematic diagram of a range hood embodiment of the present application when the oil guide plate is in a first position;
[0041] Fig.17 is along Fig.16 Sectional view along line AA;
[0042] Fig.18 yes Fig.17 A partial enlarged view of point B in the middle.
[0043] Reference numerals:
[0044] 1- smoke hood, 2- abutment, 3- air flow inlet, 4- give way groove, 5- oil guide plate, 6- inner surface, 7- thickened layer, 8- left step surface, 9- right step surface, 10- oil collecting unit, 11- tank body, 12- oil leakage hole, 13- valve core, 14- guide slope, 15- abutment surface, 16- spring, 17- oil cup, 18- casing. [Specific implementation method]
[0045] In order to make the purpose, scheme and beneficial effects of the present application more clear, the present application is further described below in conjunction with the accompanying drawings and preferred embodiments.
[0046] The present application proposes an embodiment of a range hood, comprising a fume hood 1, a housing 18, a fan, an oil guide plate 5, a driving device and an oil cup 17. Figures 1 to 18As shown. The smoke hood 1 is connected and arranged below the housing 18. The fan is arranged in the housing 18. The oil guide plate 5 is suitable for being fixed to the smoke hood 1. The oil cup 17 is suitable for being fixed to the smoke hood 1; specifically, the oil cup 17 is suspended and fixed to the bottom of the smoke hood 1. The smoke hood 1 includes an inner cavity and an airflow inlet 3 for airflow to pass through and flow into the inner cavity.
[0047] Exemplarily, the oil guide plate 5 is configured to be suitable for switching between the first position and the second position. Specifically, the driving device is configured to be suitable for driving the oil guide plate 5 to move so as to switch between the first position and the second position. The driving device includes a motor and a transmission device. The transmission device is configured as at least a part of the mechanical connection between the motor and the oil guide plate 5.
[0048] For example, Figures 3 to 6 As shown, an oil collecting unit 10 is provided at one end of the oil guide plate 5, and the oil collecting unit 10 includes a groove body 11 provided with an oil leakage hole 12 and a sealing member for sealing the oil leakage hole 12. The oil collecting unit 10 is provided on the inner surface 6 of the oil guide plate 5. The groove body 11 is in the shape of a long rectangular parallelepiped.
[0049] For example, Figure 8 and 9 As shown, the smoke hood 1 is provided with an abutment member 2. When the oil guide plate 5 is in the first position, the abutment member 2 acts on the sealing member, so that the oil leakage hole 12 is opened, as shown in FIG. Figure 1 , 2 , 16 and 17, the grease in the oil collecting unit 10 flows directly into the oil cup 17 through the open oil leakage hole 12; specifically, the grease in the tank body 11 drips downward through the open oil leakage hole 12 and falls into the oil cup 17. When the oil guide plate 5 is in the second position, the abutment member 2 releases the effect on the sealing member, and the sealing member is reset and seals the oil leakage hole 12. Fig.10 and 11 shown.
[0050] For example, Figure 1 , 2 , 16 and 17, when the oil guide plate 5 is in the first position, the oil guide plate 5 is tilted backward and downward, and the oil collecting unit 10 is arranged at the bottom of the oil guide plate 5. A filter screen is arranged at the air flow inlet 3. When the oil guide plate 5 is in the first position, the oil guide plate 5 blocks the air flow inlet 3 and the filter screen. At this time, the range hood is in a non-working state. When the oil guide plate 5 is in the first position, the oil guide plate 5 and the air flow inlet 3 are separated to form a smoke collecting chamber. In other words, when the oil guide plate 5 is in the first position, the oil guide plate 5 and the filter screen are separated to form a smoke collecting chamber. The smoke collecting chamber and the inner cavity are separated by the air flow inlet 3. The smoke collecting chamber is located on the outside of the air flow inlet 3. The inner cavity is located on the inside of the air flow inlet 3.
[0051] For example, Fig.10 and11 As shown, when the oil guide plate 5 is in the second position, the oil guide plate 5 is tilted forward and downward, and the oil collecting unit 10 is arranged at the bottom of the oil guide plate 5, and the oil collecting unit 10 is lower than the oil cup 17. When the oil guide plate 5 is in the second position, the range hood is in a working state suitable for extracting oil smoke, and at this time, the oil guide plate 5 is suitable for guiding the oil smoke to the air flow inlet 3. Specifically, when the oil guide plate 5 is in the second position, if the fan is running, negative pressure is generated to form an oil smoke air flow, wherein part of the oil smoke air flow flows into the air flow inlet 3 under the guidance of the oil guide plate 5.
[0052] Exemplarily, the driving device is configured to drive the oil guide plate 5 to rotate around its top end to switch between the first position and the second position. When the oil guide plate 5 is in the first position, the angle between the outer surface of the oil guide plate 5 and the horizontal plane is an acute angle, such as Figure 1 , 2 , 16 and 17. When the oil guide plate 5 is in the second position, the angle between the outer surface of the oil guide plate 5 and the horizontal plane is an obtuse angle, as shown in FIG. Fig.10 and 11 shown.
[0053] For example, Fig.10 and 11 As shown, when the oil guide plate 5 is in the second position, the bottom end of the oil guide plate 5 is also the bottom end of the entire range hood, thereby achieving the downward movement of the smoke collecting chamber and improving the oil fume extraction effect.
[0054] For example, Figure 3 and 4 As shown, the oil collecting unit 10 is arranged in the middle of the inner surface 6 of the oil guide plate 5. The bottom of the inner surface 6 of the oil guide plate 5 is provided with a thickened layer 7 protruding relative to the inner surface 6 of the oil guide plate 5. It should be noted here that, no matter whether the oil guide plate 5 is in the first position or in the second position, the "bottom of the inner surface 6 of the oil guide plate 5" is located at the bottom of the oil guide plate 5. Figure 1 , 2 , 10, 11, 16 and 17. The thickened layer 7 extends from the left and right edges of the oil guide plate 5 toward the oil collecting unit 10 to guide the grease attached to the oil guide plate 5 to the oil collecting unit 10 when the oil guide plate 5 is in the first position and the second position. Specifically, the grease attached to the oil guide plate 5 is guided to flow into the tank body 11 when the oil guide plate 5 is in the first position and the second position. In other words, whether the oil guide plate 5 is in the first position or the second position, the thickened layer 7 extends from the left and right edges of the oil guide plate 5 toward the oil collecting unit 10, as shown in FIG. Figure 3 and 4As shown. The thickened layer 7 is divided into two parts, left and right, by the oil collecting unit 10. The top surface of the thickened layer 7 is connected to the inner surface 6 of the oil guide plate 5 through the left step surface 8 and the right step surface 9. The oil collecting unit 10 is arranged between the left step surface 8 and the right step surface 9. The left step surface 8 and the right step surface 9 are arranged symmetrically with respect to the oil collecting unit 10, as shown in FIG. Figure 3 and 4 As shown. The left step surface 8 is connected to the oil collecting unit 10 at one end, and connected to the left edge of the oil guide plate 5 at the other end. The right step surface 9 is connected to the oil collecting unit 10 at one end, and connected to the right edge of the oil guide plate 5 at the other end. The angle between the plane where the left step surface 8 is located and the plane where the right step surface 9 is located is an obtuse angle. In addition, it should be noted that the thickened layer 7 can be solid or non-solid. When the oil guide plate 5 is in the first position and the second position, the left step surface 8 and the right step surface 9 extend obliquely from the left and right sides toward the oil collecting unit 10, respectively, so as to guide the grease to the oil collecting unit 10. In other words, whether the oil guide plate 5 is in the first position or the second position, the left step surface 8 and the right step surface 9 extend obliquely from the left and right sides toward the oil collecting unit 10, respectively.
[0055] Exemplarily, the tank body 11 includes a bottom wall and an opening opposite to the bottom wall. The oil leakage hole 12 is arranged on the bottom wall. When the oil guide plate 5 is in the first position and the second position, the opening is located above the bottom wall. In other words, whether the oil guide plate 5 is in the first position or the second position, the opening is located above the bottom wall. Figure 1 , 2 , 10, 11, 16 and 17, thereby facilitating the grease attached to the inner surface 6 of the oil guide plate 5 to flow into the groove body 11 through the opening.
[0056] For example, Figure 7 and 8 As shown, the fume collecting hood 1 comprises a clearance groove 4. When the oil guide plate 5 is in the first position, the oil collecting unit 10 is placed in the clearance groove 4.
[0057] For example, Figure 5 , 6, 11, 12, 14, 15, 17 and 18, the closing member includes a valve core 13 and an elastic member. The valve core 13 and the elastic member are both arranged in the groove body 11. The elastic member is a spring 16. When the oil guide plate 5 is in the first position, the valve core 13 is separated from the oil leakage hole 12 under the action of the abutment member 2, so that the oil leakage hole 12 is open. When the oil guide plate 5 is in the second position, the valve core 13 closes the oil leakage hole 12 under the action of the elastic member. When the oil guide plate 5 switches from the second position to the first position, the abutment member 2 pushes against the valve core 13, so that the valve core 13 moves away from the oil leakage hole 12, and the elastic member is deformed under the action of the valve core 13. In other words, when the oil guide plate 5 switches from the second position to the first position, the abutment member 2 pushes against the valve core 13, so that the valve core 13 compresses the spring 16 and moves away from the oil leakage hole 12. When the oil guide plate 5 is in the second position, the elastic member recovers its deformation and applies force to the valve core 13, so that the valve core 13 closes the oil leakage hole 12. In other words, when the oil guide plate 5 is in the second position, the spring 16 recovers its deformation and squeezes the valve core 13, so that the valve core 13 closes the oil leakage hole 12.
[0058] For example, Figure 5 , 6 , 11, 12, 14, 15, 17 and 18, the valve core 13 includes a guide bevel 14. The end of the guide bevel 14 is connected to an abutment surface 15. The abutment surface 15 is perpendicular to the inner surface 6 of the oil guide plate 5. When the oil guide plate 5 switches from the second position to the first position, the operation of the driving device drives the oil guide plate 5 to rotate around its top end, and the free end of the abutment member 2 first contacts the top end of the guide bevel 14, and then as the oil guide plate 5 further approaches the oil collecting unit 10 under the action of the driving device, the free end of the abutment member 2 pushes against the guide bevel 14 and slides along the guide bevel 14, so that the valve core 13 moves away from the oil leakage hole 12, and the oil leakage hole 12 opens. With the movement of the oil guide plate 5, the opening degree of the oil leakage hole 12 gradually increases until the free end of the abutment member 2 slides off the guide bevel 14 and abuts against the abutment surface 15, as shown in FIG. Fig.18 As shown, at this time, due to the obstruction of the abutment 2 (a side wall is formed between the bottom edge of the oil guide plate 5 and the oil collecting unit 10, and the side wall abuts against the abutment 2, so that the oil guide plate 5 is blocked), the oil guide plate 5 cannot move further toward the oil collecting unit 10, and with this feedback, the driving device stops moving, so that the oil guide plate 5 stays in the first position. It should be noted here that the extension direction of the free end of the abutment 2 is parallel to the inner surface 6 of the oil guide plate 5, and the extension direction of the free end of the abutment 2 is also parallel to the moving direction of the valve core 13. When the oil guide plate 5 is in the first position, the free end of the abutment 2 abuts against the abutment surface 15, and the free end of the abutment 2 abuts against the abutment surface 15 to generate a certain state maintaining force.
[0059] Exemplarily, when the oil guide plate 5 switches from the first position to the second position, the driving device drives the oil guide plate 5 to rotate around its top end, overcomes the state maintaining force, and the free end of the abutment 2 disengages from the abutment surface 15, and the free end of the abutment 2 contacts the bottom end of the guide slope 14. Then, as the oil guide plate 5 moves further away from the oil collecting unit 10 under the action of the driving device, the free end of the abutment 2 gradually slides along the bottom end of the guide slope 14 toward the top end of the guide slope 14, and the spring 16 gradually recovers its deformation and squeezes the valve core 13, so that the valve core 13 moves toward the oil leakage hole 12, gradually closing the oil leakage hole 12 until the oil leakage hole 12 is completely closed, and the driving device drives the oil guide plate 5 to continue to rotate around its top end, and the oil collecting unit 10 moves further and further away from the abutment 2 until the oil guide plate 5 reaches the second position. Fig.10 and 11 As shown, the driving device maintains the oil guide plate 5 in the second position.
[0060] Exemplarily, the oil guide plate 5 includes a glass outer wall and a metal inner wall bonded together. The above-mentioned "inner surface 6 of the oil guide plate 5" and "thickened layer 7" belong to the metal inner wall.
[0061] According to another embodiment of the present application, when the oil guide plate 5 is in the first position, the abutment member 2 acts on the closing member to open the oil leakage hole 12 , and the grease in the trough body 11 flows through the open oil leakage hole 12 to the fume hood 1 , and then flows into the oil cup 17 .
[0062] The components of different embodiments may be combined with each other in any feasible manner to achieve the purpose of this application.
[0063] It should be noted that the present application should not be understood as being limited to the above-described implementation methods, but should be understood as covering all possible implementations determined by the claims of the present application in combination with the disclosure of the specification. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall fall within the protection scope of the technical solution of the present application.
Claims
1. A range hood, comprising a fume hood (1), an oil guide plate (5) adapted to be fixed to the fume hood (1), and an oil cup (17) adapted to be fixed to the fume hood (1), characterized in that: An oil collecting unit (10) is provided at one end of the oil guide plate (5), and the oil collecting unit (10) comprises a groove body (11) provided with an oil leakage hole (12) and a sealing member for sealing the oil leakage hole (12); The smoke collecting hood (1) is provided with an abutment member (2); The oil guide plate (5) is configured to be suitable for switching between a first position and a second position; When the oil guide plate (5) is in the first position, the abutment member (2) acts on the sealing member, so that the oil leakage hole (12) is opened, and the grease in the trough body (11) flows through the opened oil leakage hole (12) to the fume collecting hood (1) or directly flows into the oil cup (17); When the oil guide plate (5) is in the second position, the abutment member (2) releases its effect on the sealing member, and the sealing member is reset and seals the oil leakage hole (12).
2. The range hood according to claim 1, characterized in that: When the oil guide plate (5) is in the first position, the oil guide plate (5) is tilted backward and downward, and the oil collecting unit (10) is arranged at the bottom of the oil guide plate (5); The oil collecting unit (10) is arranged on the inner surface (6) of the oil guide plate (5).
3. The range hood according to claim 2, characterized in that: When the oil guide plate (5) is in the second position, the oil guide plate (5) is arranged to tilt forward and downward, and the oil collecting unit (10) is arranged at the bottom of the oil guide plate (5).
4. The range hood according to claim 3, characterized in that: The smoke collecting hood (1) comprises an inner cavity and an airflow inlet (3) for airflow to pass through and flow into the inner cavity; When the oil guide plate (5) is in the first position, the oil guide plate (5) blocks the air flow inlet (3); When the oil guide plate (5) is in the second position, the oil guide plate (5) is suitable for guiding the oil smoke to the air flow inlet (3).
5. The range hood according to claim 3, characterized in that: It comprises a driving device, which is configured to drive the oil guide plate (5) to rotate around its top end so as to switch it between the first position and the second position.
6. The range hood according to claim 3, characterized in that: When the oil guide plate (5) is in the first position, the angle between the outer surface of the oil guide plate (5) and the horizontal plane is an acute angle; When the oil guide plate (5) is in the second position, the angle between the outer surface of the oil guide plate (5) and the horizontal plane is an obtuse angle.
7. The range hood according to claim 6, characterized in that: When the oil guide plate (5) is in the second position, the bottom end of the oil guide plate (5) is also the bottom end of the entire range hood.
8. The range hood according to claim 3, characterized in that: The oil collecting unit (10) is arranged at the middle of the inner surface (6) of the oil guide plate (5); A thickened layer (7) protruding relative to the inner surface (6) of the oil guide plate (5) is provided at the bottom of the inner surface (6) of the oil guide plate (5); The thickened layer (7) extends from the left and right edges of the oil guide plate (5) toward the oil collecting unit (10) so as to guide the grease attached to the oil guide plate (5) to the oil collecting unit (10) when the oil guide plate (5) is in the first position and the second position.
9. The range hood according to claim 8, characterized in that: The top surface of the thickened layer (7) is connected to the inner surface (6) of the oil guide plate (5) via a left step surface (8) and a right step surface (9); The oil collecting unit (10) is arranged between the left step surface (8) and the right step surface (9); When the oil guide plate (5) is in the first position and the second position, the left step surface (8) and the right step surface (9) extend obliquely from the left and right sides respectively toward the oil collecting unit (10) so as to guide the grease attached to the oil guide plate (5) to the oil collecting unit (10).
10. The range hood according to claim 1, characterized in that: The smoke collecting hood (1) comprises a clearance groove (4); When the oil guide plate (5) is in the first position, the oil collecting unit (10) is placed in the clearance groove (4).
11. The range hood according to any one of claims 1 to 10, characterized in that: The closure member comprises a valve core (13) and an elastic member; When the oil guide plate (5) is in the first position, the valve core (13) is separated from the oil leakage hole (12) under the action of the abutment member (2), so that the oil leakage hole (12) is opened; When the oil guide plate (5) is in the second position, the valve core (13) closes the oil leakage hole (12) under the action of the elastic member; When the oil guide plate (5) switches from the second position to the first position, the abutment member (2) abuts against the valve core (13), causing the valve core (13) to move in a direction away from the oil leakage hole (12), and the elastic member is deformed under the action of the valve core (13); When the oil guide plate (5) is in the second position, the elastic member recovers its deformation and applies force to the valve core (13), so that the valve core (13) closes the oil leakage hole (12).
12. The range hood according to claim 11, characterized in that: The valve core (13) comprises a guiding inclined surface (14); When the oil guide plate (5) switches from the second position to the first position, the free end of the abutment member (2) abuts against the guide slope (14) and slides along the guide slope (14), so that the valve core (13) moves in a direction away from the oil leakage hole (12).
13. The range hood according to claim 12, characterized in that: The end of the guiding inclined surface (14) is connected to an abutting surface (15); The abutment surface (15) is perpendicular to the inner surface (6) of the oil guide plate (5); The extension direction of the free end of the abutment member (2) is parallel to the inner surface (6) of the oil guide plate (5); When the oil guide plate (5) is in the first position, the free end of the abutment member (2) abuts against the abutment surface (15).
14. The range hood according to claim 13, characterized in that: A side wall is formed between the bottom edge of the oil guide plate (5) and the oil collecting unit (10); When the oil guide plate (5) is in the first position, the side wall abuts against the abutment member (2).
15. The range hood according to any one of claims 1 to 10, characterized in that: The trough body (11) comprises a bottom wall and an opening opposite to the bottom wall; The oil leakage hole (12) is arranged on the bottom wall; The sealing member is arranged in the groove body (11); When the oil guide plate (5) is in the first position and the second position, the opening is located above the bottom wall.