Range hood

Abstract

The utility model discloses a range hood, and relates to the technical field of range hoods, the range hood comprises a housing, a smoke gathering plate and a flow guide structure, a smoke inlet cavity is arranged in the housing, and the housing is also provided with a smoke inlet communicated with the smoke inlet cavity; the smoke gathering plate is rotationally installed on the machine shell and is provided with a closing position for closing the smoke inlet and an opening position for opening the smoke inlet. The flow guide structure is fixedly arranged on the side, facing the smoke inlet, of the smoke gathering plate, and the flow guide structure is used for guiding oil smoke to the smoke inlet; according to the technical scheme provided by the utility model, the smoke suction effect of the range hood can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and particularly relates to a range hood. Background Art

[0002] When the existing range hood with a smoke collecting plate is working, since the smoke collecting plate is opened during operation and there is a gap between the smoke collecting plate and the range hood body, a small amount of oil fume leaks from this gap during the process of the extracted oil fume entering the range hood body, resulting in a poor smoking effect. Summary of the Utility Model

[0003] The main object of the utility model is to provide a range hood, aiming to improve the smoking effect of the range hood.

[0004] To achieve the above object, the range hood proposed by the utility model includes:

[0005] A housing, which is internally provided with a smoke inlet cavity, and the housing is further provided with a smoke inlet communicating with the smoke inlet cavity;

[0006] A smoke collecting plate, which is rotatably installed on the housing and has a closed position for closing the smoke inlet and an open position for opening the smoke inlet; and

[0007] A flow guiding structure, which is fixedly arranged on one side of the smoke collecting plate facing the smoke inlet, and the flow guiding structure is used for guiding the oil fume to the smoke inlet.

[0008] In an embodiment, the flow guiding structure includes a first flow guiding plate, and the first flow guiding plate has a first flow guiding surface arranged at an angle with the smoke collecting plate.

[0009] In an embodiment, the longitudinal section contour line of the first flow guiding surface is a straight line or an arc.

[0010] In an embodiment, the extension surface of the first flow guiding surface passes through the smoke inlet.

[0011] In an embodiment, the flow guiding structure further includes a second flow guiding plate, the first flow guiding plate is fixedly connected to the smoke collecting plate through the second flow guiding plate, and at least part of the second flow guiding plate is attached to the smoke collecting plate.

[0012] In an embodiment, the second flow guiding plate includes a first connecting section, a flow guiding section and a second connecting section which are connected in sequence, the first connecting section and the second connecting section are both attached to the smoke collecting plate, and the flow guiding section has a second flow guiding surface protruding towards the smoke inlet.

[0013] In an embodiment, the first flow guiding surface is located above the second flow guiding surface;

[0014] In the direction close to the first flow guiding surface, the distance between the second flow guiding surface and the smoke gathering plate first increases and then decreases.

[0015] In one embodiment, the first flow guiding plate is connected to one end of the second connecting section far away from the flow guiding section;

[0016] Alternatively, the first flow guiding plate is connected between the second connecting section and the flow guiding section.

[0017] In one embodiment, a support plate is fixed on the side of the first flow guiding plate facing away from the first flow guiding surface.

[0018] In one embodiment, the second connecting section includes a first section and a second section connected to each other. The first section is attached to the smoke gathering plate, and the second section is located on the side of the first flow guiding plate facing away from the first flow guiding surface and is connected to the first flow guiding plate.

[0019] In one embodiment, the free end of the first flow guiding plate abuts against the side of the first section facing away from the smoke gathering plate.

[0020] In one embodiment, the first flow guiding plate and the second flow guiding plate are integrally formed.

[0021] In one embodiment, when the smoke gathering plate is in the closed position, the flow guiding structure is spaced apart from the edge of the smoke inlet.

[0022] In one embodiment, an avoidance groove for the flow guiding structure to extend into is provided at the edge of the smoke inlet.

[0023] In the technical solution of the present utility model, by providing a flow guiding structure on the side of the smoke gathering plate facing the smoke inlet, when the range hood is working and the smoke gathering plate is in the open position, during the smoking process, a part of the oil fume directly enters the smoke inlet cavity through the smoke inlet, and another part of the oil fume rushes upward and hits the flow guiding structure. Under the guiding action of the flow guiding structure on the oil fume, the flow direction of this part of the oil fume changes and flows towards the smoke inlet. Furthermore, the negative pressure distribution in front of the smoke inlet and the oil fume flow state are effectively improved, facilitating the oil fume to enter the smoke inlet cavity through the smoke inlet, thereby reliably reducing the oil fume leakage amount at the gap and improving the smoking effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0025] Figure 1 Schematic structural diagram of an embodiment of the range hood provided by the present utility model; at this time, the smoke collecting plate is in the open position;

[0026] Figure 2 For Figure 1 Lateral sectional view of the range hood in

[0027] Figure 3 For Figure 2 Local enlarged view at A in

[0028] Figure 4 Schematic structural diagram of an embodiment of the range hood provided by the present utility model; at this time, the smoke collecting plate is in the closed position;

[0029] Figure 5 For Figure 4 Lateral sectional view of the range hood in

[0030] Figure 6 For Figure 5 Local enlarged view at B in

[0031] Figure 7 Schematic structural diagram of another embodiment of the range hood provided by the present utility model; at this time, the smoke collecting plate is in the open position;

[0032] Figure 8 For Figure 7 Lateral sectional view of the range hood in

[0033] Figure 9 For Figure 8 Local enlarged view at C in

[0034] Figure 10 Schematic structural diagram of another embodiment of the range hood provided by the present utility model; at this time, the smoke collecting plate is in the closed position;

[0035] Figure 11 For Figure 10 Lateral sectional view of the range hood in

[0036] Figure 12 For Figure 11 Local enlarged view at D in

[0037] Figure 13 Schematic diagram of the force analysis of the oil fume particles when the range hood is working.

[0038] Explanation of the reference numerals in the drawings:

[0039] 100, Range hood; 101, Gap; 10, Housing; 11, Smoke inlet cavity; 12, Smoke inlet; 13, Avoidance groove; 20, Smoke collecting plate; 30, Flow guiding structure; 31, First flow guiding plate; 311, First flow guiding surface; 32, Second flow guiding plate; 321, First connecting section; 322, Flow guiding section; 323, Second connecting section; 324, Second flow guiding surface; 40, Glass panel.

[0040] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0044] When the existing range hood with a smoke collecting plate is working, since the smoke collecting plate is opened during operation and there is a gap between the smoke collecting plate and the range hood body, a small amount of oil fume leaks from this gap during the process of the extracted oil fume entering the range hood body, resulting in a poor smoking effect.

[0045] To solve this technical problem, the present utility model proposes a range hood 100.

[0046] Please refer to Figures 1 to 13 In an embodiment of the present utility model, the range hood 100 includes a housing 10, a smoke collecting plate 20, and a flow guiding structure 30. An air inlet cavity 11 is provided inside the housing 10, and the housing 10 is further provided with an air inlet 12 communicating with the air inlet cavity 11; the smoke collecting plate 20 is rotatably installed on the housing 10 and has a closed position for closing the air inlet 12 and an open position for opening the air inlet 12; the flow guiding structure 30 is fixedly arranged on one side of the smoke collecting plate 20 facing the air inlet 12, and the flow guiding structure 30 is used to guide the oil fume to the air inlet 12; thereby improving the smoking effect of the range hood 100.

[0047] In the technical solution of the present utility model, by providing the flow guiding structure 30 on one side of the smoke collecting plate 20 facing the air inlet 12, when the range hood 100 is working, the smoke collecting plate 20 is in the open position. During the smoking process, a part of the oil fume directly enters the air inlet cavity 11 through the air inlet 12, and another part of the oil fume rushes upward and hits the flow guiding structure 30. Under the guiding action of the flow guiding structure 30 on the oil fume, the flow direction of this part of the oil fume changes and flows towards the air inlet 12. Furthermore, the negative pressure distribution in front of the air inlet 12 and the oil fume flow state are effectively improved, facilitating the oil fume to enter the air inlet cavity 11 through the air inlet 12, thereby reliably reducing the oil fume leakage amount at the gap 101 and improving the smoking effect of the range hood 100.

[0048] Specifically, the range hood 100 includes a housing 10, and the housing 10 is provided with an air inlet 12 for the oil fume absorbed when the range hood 100 is working to enter. Among them, the smoke collecting plate 20 is provided to cover the air inlet 12, which can not only improve the ornamental value of the range hood 100, but also reduce the risk of foreign objects entering the air inlet cavity 11 through the air inlet 12 during the shutdown process; the smoke collecting plate 20 is rotatably connected to the housing 10 so that the smoke collecting plate 20 can be flexibly switched between the open position and the closed position to adapt to the specific working conditions of the range hood 100.

[0049] In order to ensure the smooth opening and closing of the smoke collecting plate 20, there is always an activity gap 101 between the smoke collecting plate 20 and the housing 10 to reduce the possibility of interference between the smoke collecting plate 20 and the housing 10. Thus, when the smoke collecting plate 20 is in the open position, there is a gap 101 between the end of the smoke collecting plate 20 close to the housing 10 and the glass panel 40 on the surface of the housing 10. When the range hood 100 starts to work, a part of the oil fume directly enters the air inlet cavity 11 through the air inlet 12, and another part, due to having an upward initial velocity, is likely to rush upward along the smoke collecting plate 20 and overflow through the gap 101; therefore, a flow guiding structure 30 is provided on the back of the smoke collecting plate 20, and the flow guiding structure 30 is used to guide the oil fume to the air inlet 12. When the oil fume hits the flow guiding structure 30, the flow guiding structure 30 will give a downward component velocity to this part of the oil fume, resulting in the downward shift of the negative pressure. At this time, asFigure 13 As shown, the direction of the oil fume is the direction of the resultant velocity to the right, specifically the direction towards the smoke inlet 12. Further, by improving the negative pressure distribution and the oil fume flow state in front of the smoke inlet 12, it helps the oil fume to flow towards the smoke inlet 12, thereby reducing the oil fume leakage amount at the gap 101 and improving the smoke suction effect of the range hood 100.

[0050] Please refer to Figure 3 and Figure 9 , in the embodiment of the present utility model, the guiding structure 30 includes a first guiding plate 31, and the first guiding plate 31 has a first guiding surface 311 disposed at an angle with the smoke collecting plate 20. Thus, since an angle is provided between the first guiding surface 311 and the smoke collecting plate 20, the first guiding surface 311 has a tendency to extend towards the range hood 100. Further, through the setting of the first guiding surface 311, the flow direction of the oil fume flushing along the smoke collecting plate 20 is changed, so that the oil fume diffuses closer to the smoke inlet 12, facilitating the oil fume to flow into the smoke inlet 12 and reducing the risk of the oil fume overflowing from the gap 101.

[0051] Specifically, in the embodiment of the present utility model, the longitudinal section contour line of the first guiding surface 311 is a straight line or an arc, and this longitudinal section is specifically the Figure 2 , Figure 8 section in the up and down direction as shown. When the longitudinal section contour line of the first guiding surface 311 is a straight line, in order to ensure the guiding effect of the first guiding surface 311, the end of the contour line of the first guiding surface 311 away from the smoke collecting plate 20 extends towards the smoke inlet 12. At this time, the first guiding surface 311 is disposed in an overall downward inclined manner; when the longitudinal section contour line of the first guiding surface 311 is an arc, there are two situations for the first guiding surface 311. One is that the longitudinal section contour line of the first guiding surface 311 protrudes towards the upper edge of the smoke collecting plate 20, and its end away from the smoke collecting plate 20 extends towards the smoke inlet 12; the other is that the longitudinal section contour line of the first guiding surface 311 protrudes towards the surface facing the smoke inlet 12 and away from the smoke collecting plate 20. At this time, the first guiding surface 311 can be configured as the following second guiding surface 324, and both can realize the change of the flow direction of the oil fume by the guiding structure 30. However, this design is not limited thereto. In other embodiments, the longitudinal section contour line of the first guiding surface 311 is a multi-segment line, and this multi-segment line includes but is not limited to straight line segments and arc segments.

[0052] When one end of the first deflector 31 is connected to the smoke collecting plate 20 and the other end extends towards the smoke inlet 12, optionally, in an embodiment of the present invention, the extension plane of the first deflector surface 311 passes through the smoke inlet 12. It can be understood that by setting the extension plane of the first deflector surface to pass through the smoke inlet 12, the intersection line of the extension plane and the plane where the smoke inlet 12 is located is between the upper edge and the lower edge of the smoke inlet 12, which can, to a certain extent, make the oil fume concentrate on passing through the smoke inlet 12, reduce the possibility of the oil fume impacting the surrounding structure of the smoke inlet 12, help reduce noise, and at the same time, improve the smoking effect of the range hood 100. However, this design is not limited thereto. In other embodiments, the extension plane of the first deflector surface 311 is arranged close to the upper edge of the smoke inlet 12.

[0053] Please refer to Figure 3 and Figure 9 , in an embodiment of the present invention, the deflector structure 30 further includes a second deflector 32. The first deflector 31 is fixedly connected to the smoke collecting plate 20 through the second deflector 32. The second deflector 32 is at least partially attached to the smoke collecting plate 20. It can be understood that using the second deflector 32 as the connection structure for the first deflector 31 to connect to the smoke collecting plate 20, and fixedly connecting to the smoke collecting plate 20 through methods such as bonding, clamping, and screw connection, so that the first deflector 31 is installed on the smoke collecting plate 20. Among them, because as Figure 3 shown, a part of the second deflector 32 is attached to the smoke collecting plate 20 or as Figure 9 shown, the second deflector 32 is completely attached to the smoke collecting plate 20, there is a large effective contact area between the second deflector 32 and the smoke collecting plate 20, which can effectively prevent the oil fume from flowing through the gap between the second deflector 32 and the smoke collecting plate 20, and can also, to a certain extent, enhance the structural strength of both the deflector structure 30 and the smoke collecting plate 20.

[0054] Please refer to Figure 3 and Figure 6 , in an embodiment of the present invention, the second deflector 32 includes a first connection section 321, a deflector section 322, and a second connection section 323 that are connected in sequence. The first connection section 321 and the second connection section 323 are both attached to the smoke collecting plate 20. The deflector section 322 has a second deflector surface 324 that protrudes towards the smoke inlet 12, so that the second deflector 32 plays a role in changing the flow direction of the oil fume. Furthermore, the direction of the oil fume changes from the upward impact direction to the direction of the resultant velocity to the right, specifically the direction towards the smoke inlet 12. Thus, the negative pressure distribution and the oil fume flow state in front of the smoke inlet 12 are effectively improved, and the smoking effect of the range hood 100 is enhanced.

[0055] Specifically, the close fit of the first connecting section 321 and the second connecting section 323 with the smoke collecting plate 20 can not only improve the connection strength between the second deflector 32 and the smoke collecting plate 20, but also reduce the risk that the oil fume rushes up into the gap between the smoke collecting plate 20 and the second deflector 32, resulting in poor overall deflector effect; and the deflector section 322 has a second deflector surface 324 protruding towards the smoke inlet 12. Specifically, the second deflector surface 324 is arranged on the side of the deflector section 322 facing the smoke inlet 12, and the longitudinal section contour line of the second deflector surface 324 at least includes an arc. Furthermore, during the process of the oil fume rushing up along the second deflector 32, the oil fume generates a resultant velocity in the rightward oil fume direction under the force on the second deflector surface 324, that is, the second deflector surface 324 can change the direction of the oil fume.

[0056] The second deflector 32 is provided with an overall equal thickness, which is convenient for the processing and manufacturing of the second deflector 32. At this time, the deflector section 322 is arched towards the smoke inlet 12 as a whole, and an installation gap is formed between the deflector section 322 and the smoke collecting plate 20. This installation gap can also assist the deformation of the deflector section 322 to a certain extent, improving the service life and deflector reliability of the deflector section 322; or, the surface of the deflector section 322 facing the smoke collecting plate 20 is connected to the smoke collecting plate 20, further enhancing the connection strength between the second deflector 32 and the smoke collecting plate 20.

[0057] Please refer to Figures 2 to 3 , in the embodiment of the present utility model, the first deflector surface 311 is located above the second deflector surface 324; thus arranged, the second deflector surface 324 changes the direction of the oil fume through its protruding arrangement towards the smoke inlet 12, and the oil fume whose direction has not been changed continues to rush upwards. At this time, the first deflector surface 311, as the rear-end structure of the second deflector surface 324, due to the tendency of the first deflector surface 311 to extend towards the range hood 100, the oil fume that continues to rush upwards collides with the first deflector surface 311. Under the action of the first deflector surface 311, its upward-rushing tendency is further changed to a resultant velocity in the rightward movement tendency, making the oil fume diffuse closer to the smoke inlet 12, facilitating the oil fume to flow into the smoke inlet 12, and reducing the risk of the oil fume overflowing from the gap 101.

[0058] Among them, in the direction close to the first deflector surface 311, the distance between the second deflector surface 324 and the smoke collecting plate 20 first increases and then decreases. The longitudinal section contour line of the second deflector surface 324 may specifically include a straight line segment that gradually approaches the smoke inlet 12 from bottom to top, an arc segment with one end connected to the straight line segment and the other end connected to the smoke collecting plate 20 (or the first deflector 31), which can gradually change the flow direction of the oil fume from the straight line segment to the arc segment, reduce the risk of turbulence, reduce noise, and at the same time, increase the amount of oil fume entering the smoke inlet 12 and improve the smoking effect of the range hood 100. However, this design is not limited thereto. In other embodiments, the second deflector 32 only includes the first connecting section 321 and the second connecting section 323.

[0059] Optionally, in an embodiment of the present utility model, the first guide plate 31 is connected to an end of the second connecting section 323 away from the guide section 322. At this time, the first guide plate 31 and the second connecting section 323 form a Figure 3 In the ∧ structure shown, the inner surface of the first guide plate 31 is the first guide surface 311, which can stop the upward rushing oil smoke and change its flow direction, so as to promote the oil smoke to diffuse toward the smoke inlet 12 and enter the smoke inlet chamber 11 from the smoke inlet 12; the second connecting section 323 can act as an oil smoke buffer section, guiding the oil smoke to rush upward toward the tip and approach the first guide surface 311. On the basis of ensuring the guiding effect of the first guide surface 311, the angle between the first guide plate 31 and the second connecting section 323 is not limited. However, the present design is not limited to this. In other embodiments, such as Figure 3 As shown, the second guide plate 32 connected to the first guide plate 31 has a second guide surface 324 protruding toward the smoke inlet 12; or, the second guide plate 32 connected to the first guide plate 31 does not have a second guide surface 324 protruding toward the smoke inlet 12, that is, the second guide plate 32 only includes a first connecting section 321 and a second connecting section 323.

[0060] In addition, a support plate can be fixed to the side of the first guide plate 31 away from the first guide surface 311. At this time, one end of the support plate is connected to the first guide plate 31 and the other end is connected to the smoke gathering plate 20, which helps to enhance the installation stability of the first guide plate 31.

[0061] Optionally, in an embodiment of the present utility model, the first guide plate 31 is connected between the second connecting section 323 and the guide section 322, so that a support plate is provided between the side of the first guide plate 31 facing away from the first guide surface 311 and the second connecting section 323 to enhance the installation stability of the first guide plate 31. One end of the support plate is connected to the second connecting section 323, and the other end is connected to the end of the first guide plate 31 away from the smoke collecting plate 20, or connected to the middle end of the first guide plate 31. However, the present design is not limited to this. In other embodiments, the first guide plate 31 is provided on the second connecting section 323, and the second guide plate 32 connected to the first guide plate 31 has a second guide surface 324 protruding toward the smoke inlet 12; or, as Figure 12 As shown, the second guide plate 32 connected to the first guide plate 31 does not have a second guide surface 324 protruding toward the smoke inlet 12 .

[0062] See also Figure 9 and Figure 12, in the embodiment of the present utility model, the second connecting section 323 includes a first section and a second section connected to each other. The first section is attached to the smoke collecting plate 20, and the second section is located on the side of the first deflector 31 away from the first deflector surface 311 and is connected to the first deflector 31. It can be understood that the first section is used as the connecting structure of the second connecting section 323 to connect the smoke collecting plate 20, and is closely attached to the smoke collecting plate 20 by means of bonding, clamping, screw connection, etc., to ensure that there is a large effective contact area between the first section and the smoke collecting plate 20, and to improve the connection strength between the second connecting section 323 and the smoke collecting plate 20.

[0063] One end of the second section is connected to the first section, and the other end is connected to the first deflector 31, realizing the integrity of the second connecting section 323 (or the second deflector 32) and the first deflector 31, facilitating the assembly of the deflector structure 30 on the smoke collecting plate 20, and also helping to disperse the impact of the oil fume through the connection between the first deflector 31 and the second connecting section 323. Among them, the second section is arranged on the side of the first deflector 31 away from the first deflector surface 311. On the basis of not affecting the diversion of the oil fume by the first deflector surface 311, the structural stability of the first deflector 31 can be further improved, and the risk that the first deflector 31 is deformed due to the impact and the diversion direction is incorrect can be reduced, ensuring the reliable smoke suction of the range hood 100.

[0064] Furthermore, in the embodiment of the present utility model, the free end of the first deflector 31 abuts against the side of the first section away from the smoke collecting plate 20. With such a setting, when the longitudinal section contour line of the first deflector 31 is a straight line, the first section, the second section and the first deflector 31 enclose a triangular structure, which can not only improve the overall stability of the deflector structure 30, but also reduce the possibility that the oil fume flows into the triangular structure through the gap 101 between the free end of the first deflector 31 and the first section and flows out from the open ends on both sides of the triangular structure, increase the amount of oil fume diverted by the first deflector surface 311, and thus improve the smoke suction effect of the range hood 100.

[0065] Optionally, in the embodiment of the present utility model, the first deflector 31 and the second deflector 32 are integrally formed, which is convenient for the forming and processing of the deflector structure 30, helps to ensure the overall structural strength of the deflector structure 30, and also helps to improve the assembly convenience of the deflector structure 30.

[0066] Please refer to Figure 6 and Figure 12, in an embodiment of the present utility model, when the smoke collecting plate 20 is in the closed position, the guiding structure 30 is spaced from the edge of the smoke inlet 12, thereby reducing the risk of interference between the guiding structure 30 and the casing 10 when the smoke collecting plate 20 is closed. Furthermore, it ensures the reliable closing of the smoke collecting plate 20. At the same time, it effectively avoids the situation that the guiding effect of the guiding structure 30 is affected due to collision with the casing 10, and improves the use reliability and smoking effect of the range hood 100.

[0067] Please refer to Figure 6 and Figure 12 , in an embodiment of the present utility model, an avoidance groove 13 for the guiding structure 30 to extend into is provided at the edge of the smoke inlet 12. Thus, when the smoke collecting plate 20 is in the closed position, the first guiding plate 31 of the guiding structure 30 extends into the avoidance groove 13, and the smoke collecting plate 20 is as close as possible to the surface of the casing 10, which helps to realize the miniaturization of the range hood 100; and, in cooperation with the guiding structure 30 being spaced from the edge of the smoke inlet 12, the end of the first guiding plate 31 away from the smoke collecting plate 20 is spaced from the bottom wall of the avoidance groove 13, which plays a role in protecting the guiding structure 30. Furthermore, it improves the guiding reliability of the guiding structure 30 and the smoking effect of the range hood 100. At the same time, when the smoke collecting plate 20 is in the open position, the groove wall of the avoidance groove 13 can, to a certain extent, guide the oil fume near the smoke inlet 12, accelerate the efficiency of the oil fume entering the smoke inlet 12, and reduce the generation of noise.

[0068] In addition, taking Figure 2 as an example, the direction perpendicular to the paper surface is the transverse direction, and the transverse width of the guiding structure 30 is smaller than the width of the notch of the avoidance groove 13, reducing the risk of interference between the guiding structure 30 and the casing 10.

[0069] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A range hood, characterized in that: include: A casing, wherein a smoke inlet cavity is provided therein, and the casing is further provided with a smoke inlet port connected to the smoke inlet cavity; A smoke collecting plate is rotatably mounted on the housing and has a closing position for closing the smoke inlet and an opening position for opening the smoke inlet; as well as The guide structure is fixedly arranged on a side of the smoke collecting plate facing the smoke inlet, and the guide structure is used to guide the oil smoke to the smoke inlet.

2. The range hood according to claim 1, characterized in that: The guide structure comprises a first guide plate, wherein the first guide plate has a first guide surface which is arranged at an angle with the smoke collecting plate.

3. The range hood according to claim 2, characterized in that: The longitudinal section contour line of the first guide surface is a straight line or an arc line.

4. The range hood according to claim 2, characterized in that: An extension surface of the first flow-guiding surface passes through the smoke inlet.

5. The range hood according to claim 4, characterized in that: The guide structure further includes a second guide plate, the first guide plate is fixedly connected to the smoke collecting plate via the second guide plate, and the second guide plate is at least partially attached to the smoke collecting plate.

6. The range hood according to claim 5, characterized in that: The second guide plate includes a first connecting section, a guide section, and a second connecting section which are connected in sequence. The first connecting section and the second connecting section are both attached to the smoke collecting plate. The guide section has a second guide surface which protrudes toward the smoke inlet.

7. The range hood according to claim 6, characterized in that: The first flow guiding surface is located above the second flow guiding surface; In the direction approaching the first guide surface, the distance between the second guide surface and the smoke collecting plate first increases and then decreases.

8. The range hood according to claim 6, characterized in that: The first guide plate is connected to an end of the second connecting section away from the guide section; Alternatively, the first guide plate is connected between the second connecting section and the guide section.

9. The range hood according to claim 8, characterized in that: A support plate is fixed to a side of the first guide plate facing away from the first guide surface.

10. The range hood according to claim 6, characterized in that: The second connecting section includes a first section and a second section which are connected to each other. The first section is attached to the smoke collecting plate, and the second section is located on a side of the first guide plate away from the first guide surface and is connected to the first guide plate.

11. The range hood according to claim 10, characterized in that: The free end of the first guide plate abuts against a side of the first section facing away from the smoke collecting plate.

12. The range hood according to claim 5, characterized in that: The first guide plate and the second guide plate are integrally formed.

13. The range hood according to claim 1, characterized in that: When the smoke collecting plate is in the closed position, the flow guiding structure is spaced apart from the edge of the smoke inlet.

14. The range hood according to claim 13, characterized in that: The edge of the smoke inlet is provided with an avoidance groove for the guide structure to extend into.

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