Range hood

Abstract

The utility model belongs to the technical field of range hoods, and particularly discloses a range hood which comprises an exhaust fume collecting hood, an upper plate, an oil screen and an opening and closing plate. The upper plate is fixedly arranged at the upper part of the exhaust fume collecting hood; the exhaust fume collecting hood is provided with a first exhaust fume inlet, the oil screen is installed in the exhaust fume collecting hood and arranged at the first exhaust fume inlet, the upper end of the oil screen is provided with a blocking part, the blocking part is connected with the upper plate so as to eliminate a gap between the oil screen and the upper plate, and the blocking part and the upper plate define a receding space in the exhaust fume collecting hood; the opening and closing plate is rotationally connected with the exhaust fume collecting hood, and when the opening and closing plate is in an open state, the upper end of the opening and closing plate can stretch into the receding space. According to the range hood, the oil screen is connected with the upper plate, so that a gap between the oil screen and the upper plate is eliminated, oil drops are effectively prevented from being generated at the lower end of the upper plate and dropping onto the opening and closing plate due to the fact that oil fume enters the exhaust fume collecting hood through an area between the oil screen and the upper plate, the opening and closing plate is prevented from being polluted, and the use experience of a user is improved.

Description

Technical Field

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

[0002] A range hood is a kitchen appliance that exhausts cooking fumes outdoors, purifying the kitchen environment and reducing the harmful effects of fumes on the human body. Currently, most 7-shaped submersible range hoods feature an external opening panel to improve extraction efficiency. However, this structure leaves the upper end of the panel outside the hood when open, which some users find unsightly.

[0003] In order to meet the oil fume extraction effect of the range hood and improve the aesthetics of the range hood, technicians set the opening and closing plate to open and close internally, that is, when the internal opening and closing plate is in the open state, its upper end will extend toward the inside of the smoke hood. However, this opening and closing method will cause the opening and closing plate to be contaminated by oil droplets, that is, the oil droplets inside the bellows will drip onto the upper plate and slide down along the inner wall of the upper plate to the opening and closing plate, affecting the user experience.

[0004] In order to solve the above problems, the usual solution of technicians is to set an oil baffle on the inner wall of the lower part of the upper plate to prevent oil dripping. Although the oil baffle structure solves the problem of oil dripping in the bellows, a small amount of oil smoke will still enter the smoke hood through the gap between the oil net and the upper plate when the opening and closing plate is opened, which will cause the outer side of the oil baffle or the inner wall of the upper plate to condense and produce oil droplets when the opening and closing plate is closed, and drip onto the opening and closing plate through the gap between the upper plate and the opening and closing plate, thereby contaminating the opening and closing plate. Utility Model Content

[0005] The technical problem solved by the present invention is to provide a range hood which can effectively solve the problem of oil droplets contaminating the opening and closing plate, thereby improving user experience.

[0006] The above technical problems are solved by the following technical solutions:

[0007] A range hood, comprising:

[0008] A smoke collecting hood having a first smoke inlet formed on its front side;

[0009] An upper plate, fixedly arranged on the upper part of the smoke collecting hood;

[0010] An oil net is installed in the smoke hood and is arranged at the smoke inlet. A blocking portion is provided at the upper end of the oil net. The blocking portion is connected to the upper plate, and the blocking portion and the upper plate enclose a clearance space inside the smoke hood.

[0011] An opening and closing plate is rotatably connected to the smoke collecting hood to open or close the first smoke inlet, and an upper end of the opening and closing plate extends into the clearance space when the opening and closing plate is in an open state.

[0012] Compared with the background technology, the range hood of the present invention has the following beneficial effects:

[0013] For range hoods whose opening and closing panels extend into the interior of the smoke hood when in the open state, a blocking portion is provided at the upper end of the oil mesh and the upper plate is connected. When the opening and closing panel is in the open state, oil smoke can be effectively blocked from passing through the area between the oil mesh and the upper plate and entering the smoke hood, thereby preventing oil droplets from being generated at the lower end of the upper plate and dripping onto the opening and closing panel after the opening and closing panel is closed, and also preventing oil droplets dripping from the inside of the bellows from dripping onto the opening and closing panel, thereby improving the user experience. In addition, the blocking portion and the upper plate enclose a clearance space inside the smoke hood, and when the opening and closing panel is in the open state, the upper end of the opening and closing panel can extend into the clearance space, thereby preventing the opening and closing panel from interfering with the blocking portion, thereby affecting the use of the opening and closing panel.

[0014] In one embodiment, the inner side wall of the upper plate is provided with a connecting portion, and the blocking portion is connected to the connecting portion.

[0015] In one embodiment, the blocking portion is connected to the inner side wall of the upper plate or the connecting portion, and a sealing material is provided at the connection between the blocking portion and the inner side wall of the upper plate or the connecting portion.

[0016] In one embodiment, the connecting portion is a hooking portion, and the blocking portion is hooked and connected to the hooking portion.

[0017] In one embodiment, the hook portion includes a connecting plate and a hanging plate, wherein the connecting plate is connected to the upper plate and extends into the interior of the smoke hood, and the hanging plate is connected to the connecting plate and extends upward and is spaced apart from the upper plate.

[0018] The blocking portion includes a main plate and a hook plate connected to each other, the main plate is connected to the upper end of the oil net, and the main plate is inwardly recessed to form the clearance space with the hook portion;

[0019] The hook plate is hooked and connected to the hanging plate.

[0020] In one embodiment, the main plate includes a first plate and a second plate connected to each other, the first plate is connected to the upper end of the oil screen, the second plate is arranged at an angle to the first plate and forms the clearance space with the hook portion, and the hook plate is connected to the upper end of the second plate and arranged at an angle to the second plate;

[0021] and / or, the angle a between the hook plate and the second plate is between 40° and 60°;

[0022] In one embodiment, the left and right ends of the opening and closing plate are connected to the smoke hood through a driving structure, and the blocking portion is provided with two spaced-apart clearance holes along the length direction of the oil net, and the driving structure portion is passed through the corresponding clearance holes.

[0023] In one embodiment, the oil net is provided with a recessed groove that is recessed toward the smoke collecting hood, and a plurality of smoke inlet holes are provided at the bottom of the recessed groove;

[0024] And / or, the depth h of the recessed groove is between 29 mm and 40 mm.

[0025] In one embodiment, the plurality of smoke inlet holes are respectively a plurality of first smoke inlet holes and a plurality of second smoke inlet holes, the area of the first smoke inlet holes is larger than the area of the second smoke inlet holes, and the first smoke inlet holes and the second smoke inlet holes are staggered along the length direction of the oil net.

[0026] In one embodiment, the first smoke inlet hole and the second smoke inlet hole are both elongated holes, and two second smoke inlet holes are provided between any two adjacent first smoke inlet holes and are spaced apart along the width direction of the oil net. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a range hood provided in Example 1 of the present utility model;

[0028] Figure 2 yes Figure 1 A magnified view of the structure at point A;

[0029] Figure 3 This is a structural schematic diagram of the range hood provided by the first embodiment of the present invention when the opening and closing plate is in the open state;

[0030] Figure 4 yes Figure 3 A magnified view of the structure at B in the middle;

[0031] Figure 5 This is a structural schematic diagram of the range hood provided in Example 1 of the present utility model when the opening and closing plate is in a closed state;

[0032] Figure 6 This is a side view of the oil screen according to the first embodiment of the present invention;

[0033] Figure 7 yes Figure 6 A magnified view of the structure at C in the middle;

[0034] Figure 8This is a structural diagram of an oil screen according to an embodiment of the present invention;

[0035] Figure 9 yes Figure 8 Enlarged view of the structure at point D in the middle.

[0036] Description of labels:

[0037] 1. Fume hood;

[0038] 2. Upper plate; 21. Hooking portion; 211. Connecting plate; 212. Hanging plate;

[0039] 3. Oil screen; 31. Blocking portion; 311. Hook plate; 312. First plate; 313. Second plate; 314. Clearance hole; 32. Concave groove; 321. First smoke inlet; 322. Second smoke inlet; 33. Clearance space;

[0040] 4. Opening and closing panels;

[0041] 5. Bellows; 51. Check valve;

[0042] 6. Fan assembly; 7. Lower plate; 71. Second smoke inlet; 8. Guide plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] In practice, in order to improve the aesthetics of the 7-shaped submersible range hood, the opening and closing plate 4 is generally set to open and close internally. However, this opening and closing method will cause the opening and closing plate 4 to be contaminated by oil droplets. The inventor has found that there are two reasons for the oil droplet contamination: on the one hand, when the opening and closing plate 4 is opened, most of the oil smoke in the kitchen will enter the smoke hood 1 through the oil net 3 at the opening and closing plate 4, and a small amount of oil smoke will also enter the smoke hood 1 through the gap between the upper plate 2 and the oil net 3. After long-term use, when the opening and closing plate 4 is closed, oil droplets will form on the lower edge of the upper plate 2 and drip onto the opening and closing plate 4, causing the opening and closing plate 4 to be contaminated, reducing the user's experience; on the other hand, when the opening and closing plate 4 is opened, since the upper end of the opening and closing plate 4 will extend into the smoke hood 1, the oil droplets dripping from the inside of the bellows 5 will drip onto the upper plate 2 and slide down along the inner side wall of the upper plate 2 to the opening and closing plate 4, causing the opening and closing plate 4 to be contaminated, reducing the user's experience. Based on this, the inventors have made the following improvements to overcome the problem of oil droplets contaminating the opening and closing plate 4 .

[0048] Example 1

[0049] like Figures 1-8As shown, the embodiment of the present invention provides a range hood, which includes a smoke hood 1, a bellows 5, a fan assembly 6, an upper plate 2, an oil net 3 and an opening and closing plate 4. The bellows 5 is fixedly arranged at the upper end of the smoke hood 1, and the fan assembly 6 is arranged in the bellows 5; the upper plate 2 is fixedly arranged at the upper part of the smoke hood 1; a first smoke inlet is formed on the front side of the smoke hood 1, the oil net 3 is installed in the smoke hood 1 and is arranged at the first smoke inlet, and a blocking portion 31 is provided at the upper end of the oil net 3, which is connected to the upper plate 2 to eliminate the gap between the oil net 3 and the upper plate 2, so as to prevent the oil smoke from entering the smoke hood 1 through the area between the oil net 3 and the upper plate 2 when the range hood is working. The blocking portion 31 and the upper plate 2 are connected at the smoke inlet. The interior of the smoke hood 1 is enclosed to form a clearance space 33; the opening and closing plate 4 is rotatably connected to the smoke hood 1, and the opening and closing plate 4 has an open state and a closed state. When the range hood is turned off, the opening and closing plate 4 is in the closed state, that is, the opening and closing plate 4 closes the smoke inlet. When the range hood is working, the opening and closing plate 4 is in the open state, that is, the opening and closing plate 4 opens the smoke inlet, and the air flow enters the smoke hood 1 through the oil net 3, and then flows out through the bellows 5 and the check valve 51 on the bellows 5. When the opening and closing plate 4 is in the open state, the upper end of the opening and closing plate 4 can extend into the clearance space 33.

[0050] The range hood is provided with a blocking portion 31 at the upper end of the oil net 3 and connected to the upper plate 2, thereby effectively preventing oil smoke from entering the smoke collecting hood 1 through the area between the upper plate 2 and the oil net 3, and avoiding oil droplets from being generated at the lower end of the upper plate 2 and dripping onto the opening and closing plate 4, thereby improving user experience; in addition, the blocking portion 31 and the upper plate 2 are enclosed inside the smoke collecting hood 1 to form a clearance space 33, and when the opening and closing plate 4 is in the open state, the upper end of the opening and closing plate 4 can extend into the clearance space 33, thereby preventing the opening and closing plate 4 from interfering with the blocking portion 31, thereby preventing the opening and closing plate 4 from affecting the use of the opening and closing plate 4.

[0051] In some embodiments, a connecting portion is provided on the inner side wall of the upper plate 2, and the blocking portion 31 is connected to the connecting portion. In this way, the upper plate 2 and the blocking portion 31 can be connected together more conveniently. The blocking portion 31 and the connecting portion can be detachably connected or non-detachably connected. Preferably, the blocking portion 31 and the connecting portion are detachably connected, so that the oil net 3 can be conveniently disassembled and cleaned.

[0052] In some embodiments, a sealing material is provided at the connection between the blocking portion 31 and the connection portion, thereby enhancing the sealing effect of the connection and preventing oil droplets from seeping out from the gap of the connection.

[0053] Optionally, the connecting portion is a hook portion 21, and the hook portion 21 and the blocking portion 31 are hooked together. By setting the hook portion 21 and the blocking portion 31 as a hook connection, the oil screen 3 can be directly hooked with the hook portion 21 during assembly and disassembly, without the need for connecting structures such as screws, making assembly and disassembly more convenient. At the same time, the hook connection method can enhance the sealing performance of the joint, without the need for adding sealing materials such as gaskets or sealants, thereby reducing the use of sealing materials and lowering costs. Optionally, the blocking portion 31 and the oil screen 3 are connected in an integrated manner, and the hook portion 21 and the upper plate 2 are connected in an integrated manner. Through the integrated connection method, the generation of gaps can be minimized, further reducing the risk of oil leakage.

[0054] In some embodiments, as Figure 4 As shown, the hook portion 21 includes a connecting plate 211 and a hooking plate 212 that are interconnected. The connecting plate 211 is disposed on the lower inner sidewall of the upper plate 2 and extends into the interior of the smoke hood 1. The hooking plate 212 is connected to the connecting plate 211 and extends upward and is spaced apart from the upper plate 2. The hooking plate 212 can be tilted upward toward the upper plate 2. By providing the hook portion 21, oil droplets in the bellows 5 fall onto the hook portion 21 and can flow into the oil receiving cup from both sides of the hook portion 21. The blocking portion 31 includes a main plate and a hook plate 311 that are interconnected. The main plate is connected to the upper end of the oil screen 3. The hook plate 311 is connected to the upper end of the main plate. The main plate is recessed inwardly to form a clearance space 33 with the hook portion 21. The hook plate 311 is hooked and connected to the hook plate 212.

[0055] Specifically, the connecting plate 211 and the hanging plate 212 are formed by bending the lower end of the upper plate 2 .

[0056] Furthermore, the main board includes a first plate 312 and a second plate 313. The first plate 312 is connected to the upper end of the oil net 3, and the first plate 312 is tilted upward toward the inside. The second plate 313 is connected to the upper end of the first plate 312, and the second plate 313 and the first plate 312 are set at an angle and form a clearance space 33 with the hook portion 21. The opening of the angle between the second plate 313 and the first plate 312 is set outward, and the hook plate 311 is connected to the upper end of the second plate 313 and is set at an angle to the second plate 313. By setting the second plate 313 and the first plate 312 at an angle, the main board is recessed into the interior of the smoke hood 1, and then setting the hook plate 311 and the second plate 313 at an angle to achieve a hook connection between the hook plate 311 and the hanging plate 212, and the structural design is reasonable.

[0057] Optionally, the angle a between the hook plate 311 and the second plate 313 is between 40° and 60°; and the angle b between the first plate 312 and the second plate 313 is between 50° and 145°. By combining the angles a and b within the above ranges, the hooking requirements can be met. If the angles a and b are set to be larger than the above ranges, the hooking will be unstable and there is a risk of disengagement. If the angles a and b are set to be smaller than the above ranges, assembly will be difficult, and the tension between them will be large after hooking, which can easily cause deformation of the main board or the hook portion 21. Therefore, setting the angles a and b within the above ranges can meet the use requirements and is less likely to cause deformation, making the structural design more reasonable.

[0058] In this embodiment, if Figure 6-Figure 8 As shown, the hook plate 311 and the second plate 313 are connected in a V-shape; the first plate 312 and the second plate 313 are connected in a V-shape. This structure facilitates the processing and manufacturing of the blocking portion 31.

[0059] In other embodiments, the blocking portion 31 may be configured as an arc-shaped structure.

[0060] In this embodiment, the opening and closing plate 4 is provided with a driving structure at both the left and right ends along the length direction of the oil net 3. In order to avoid interference between the driving structure and the blocking part 31, the main board of the blocking part 31 is provided with two spaced-apart clearance holes 314 along the length direction of the oil net 3. The two clearance holes 314 are respectively used to avoid the two driving structures, that is, the driving structure part can extend into the corresponding clearance hole 314.

[0061] Optionally, the oil screen 3 is provided with a recessed groove 32 that is recessed toward the fume hood 1. A plurality of smoke inlet holes are provided at the bottom of the recessed groove 32. The opening and closing plate 4 and the recessed groove 32 form a negative pressure zone. When the range hood is off, the opening and closing plate 4 is in a closed state, sealing the recessed groove 32. When the range hood is in operation, the opening and closing plate 4 is in an open state, allowing airflow to enter the fume hood 1 through the recessed groove 32. During this process, the opening and closing plate 4 is opened at a certain angle to the oil screen 3, forming a negative pressure zone between the opening and closing plate 4 and the recessed groove 32. This increases the intake pressure, allowing airflow to be quickly introduced, thereby improving the smoke exhaust effect.

[0062] Furthermore, the depth h of the recessed groove 32 is between 29 mm and 40 mm. Setting the depth of the recessed groove 32 within this range maximizes the smoke exhaust effect. It is understood that if the depth of the recessed groove 32 is less than this range, the negative pressure in the negative pressure zone will be low, resulting in poor smoking performance. If the depth of the recessed groove 32 is greater than this range, the air intake area of the first smoke inlet will be affected, also resulting in poor smoking performance.

[0063] Optionally, the plurality of smoke inlets are respectively a plurality of first smoke inlet holes 321 and a plurality of second smoke inlet holes 322. The area of the first smoke inlet holes 321 is larger than the area of the second smoke inlet holes 322. Both the first smoke inlet holes 321 and the second smoke inlet holes 322 extend along the width of the oil net 3, and are staggered along the length of the oil net 3, with the width and length of the oil net 3 being perpendicular to each other. By dividing the plurality of smoke inlets into a plurality of first smoke inlet holes 321 and a plurality of second smoke inlet holes 322 of different areas, an aesthetically pleasing arrangement is achieved, effectively ensuring air flow diversion and negative pressure, thereby improving smoke exhaust efficiency. It is understood that if both the first smoke inlet holes 321 and the second smoke inlet holes 322 are larger, the negative pressure in the negative pressure zone will be reduced; if both the first smoke inlet holes 321 and the second smoke inlet holes 322 are smaller, the air flow diversion effect will be reduced.

[0064] Furthermore, the first smoke inlet hole 321 and the second smoke inlet hole 322 are both set as long strip holes, and two second smoke inlet holes 322 are arranged between any two adjacent first smoke inlet holes 321 and are spaced apart along the width direction of the oil net 3. This structure makes the air intake volume and air intake area larger, and can improve the air intake diversion effect.

[0065] In other embodiments, the first smoke inlet hole 321 and the second smoke inlet hole 322 may also be configured as other shapes, such as round holes or square holes.

[0066] The range hood also includes a lower plate 7, which is arranged at the lower end of the oil net 3 so that the opening and closing plate 4 can be flush with the lower plate 7 when closed, and the lower plate 7 and the lower end of the smoke collecting hood 1 form a second smoke inlet 71. When the opening and closing plate 4 is in the closed state, the opening and closing plate 4 and the lower plate 7 overlap to improve the aesthetics; and the lower plate 7 and the lower end of the smoke collecting hood 1 form a second smoke inlet 71, so that oil smoke can also enter through the second smoke inlet 71, that is, cooperate with the first smoke inlet to intake smoke, further improving the smoking effect.

[0067] The range hood further comprises a guide plate 8, which is arranged at the lowermost end of the smoke collecting hood 1 and tilted inwards. The smoke is guided by the guide plate 8 and discharged upwards, which can improve the smoke intake effect of the second smoke inlet.

[0068] Optionally, the opening and closing plate 4, the lower plate 7 and the guide plate 8 can all be glass plates, which can improve the aesthetics of the range hood.

[0069] Example 2

[0070] This embodiment provides a range hood, in which the blocking portion 31 is directly connected to the inner wall of the upper plate 2 and fixed by a sealing material, such as bonding; or the blocking portion 31 is connected to the inner wall of the upper plate 2 by a connecting member (such as a screw) to prevent oil smoke from entering the smoke hood 1 through the area between the oil net 3 and the upper plate 2, avoiding the generation of oil droplets at the lower end of the upper plate 2 and dripping onto the opening and closing plate 4, thereby improving the user experience.

[0071] Optionally, the hook plate 311 of the blocking part 31 is fitted with the inner wall of the upper plate 2 and fixedly connected by screws, and a sealing gasket is provided between the hook plate 311 and the inner wall of the upper plate 2. This structural design makes the blocking part 31 and the upper plate 2 detachable and easy to disassemble and assemble, and the screw installation operation is also relatively convenient.

[0072] Optionally, the hook plate 311 of the blocking portion 31 and the inner wall of the upper plate 2 can also be bonded by sealant. This structural design improves the sealing performance between the blocking portion 31 and the upper plate 2, effectively preventing oil droplets from flowing out of the inner wall of the upper plate 2.

[0073] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (1) is formed with a first smoke inlet on its front side; An upper plate (2) is located on the upper portion of the smoke collecting hood (1); An oil net (3) is installed in the smoke collecting hood (1) and is arranged at the first smoke inlet. A blocking portion (31) is provided at the upper end of the oil net (3). The blocking portion (31) is connected to the upper plate (2). The blocking portion (31) and the upper plate (2) enclose a clearance space (33) inside the smoke collecting hood (1). An opening and closing plate (4) is rotatably connected to the smoke collecting hood (1) to open or close the first smoke inlet, and an upper end of the opening and closing plate (4) extends into the clearance space (33) when the opening and closing plate (4) is in an open state.

2. The range hood according to claim 1, characterized in that: The inner side wall of the upper plate (2) is provided with a connecting portion, and the blocking portion (31) is connected to the connecting portion.

3. The range hood according to claim 2, characterized in that: The blocking portion (31) is connected to the inner side wall of the upper plate (2) or the connecting portion, and a sealing material is provided at the connection between the blocking portion (31) and the inner side wall of the upper plate (2) or the connecting portion.

4. The range hood according to claim 2, characterized in that: The connecting portion is a hooking portion (21), and the blocking portion (31) is hooked and connected to the hooking portion (21).

5. The range hood according to claim 4, characterized in that: The hook portion (21) includes a connecting plate (211) and a hanging plate (212), wherein the connecting plate (211) is connected to the upper plate (2) and extends toward the interior of the smoke hood (1), and the hanging plate (212) is connected to the connecting plate (211), extends upward, and is spaced apart from the upper plate (2); the blocking portion (31) includes a main plate and a hook plate (311) connected to each other, wherein the main plate is connected to the upper end of the oil net (3), and the main plate is recessed inwardly to form the clearance space (33) with the hook portion (21); The hook plate (311) is hooked and connected to the hanging plate (212).

6. The range hood according to claim 5, characterized in that: The main plate comprises a first plate (312) and a second plate (313) connected to each other, the first plate (312) being connected to the upper end of the oil screen (3), the second plate (313) being arranged at an angle to the first plate (312) and forming the clearance space (33) with the hook portion (21), and the hook plate (311) being connected to the upper end of the second plate (313) and being arranged at an angle to the second plate (313); and / or, the angle a between the hook plate (311) and the second plate (313) is between 40° and 60°; And / or, the angle b between the first plate (312) and the second plate (313) is between 50° and 145°.

7. The range hood according to any one of claims 1 to 6, characterized in that: The left and right ends of the opening and closing plate (4) are connected to the smoke collecting hood (1) via a driving structure; the blocking portion (31) is provided with two spaced-apart paving holes (314) along the length direction of the oil net (3); and the driving structure portion is inserted into the corresponding paving holes (314).

8. The range hood according to any one of claims 1 to 6, characterized in that: The oil net (3) is provided with a recessed groove (32) recessed toward the smoke collecting hood (1), and a plurality of smoke inlet holes are provided at the bottom of the recessed groove (32); And / or, the depth h of the recessed groove (32) is between 29 mm and 40 mm.

9. The range hood according to claim 8, characterized in that: The plurality of smoke inlet holes are respectively a plurality of first smoke inlet holes (321) and a plurality of second smoke inlet holes (322); the area of the first smoke inlet holes (321) is larger than the area of the second smoke inlet holes (322); and along the length direction of the oil net (3), the first smoke inlet holes (321) and the second smoke inlet holes (322) are staggeredly distributed.

10. The range hood according to claim 9, characterized in that: The first smoke inlet hole (321) and the second smoke inlet hole (322) are both long strip holes, and two second smoke inlet holes (322) are provided between any two adjacent first smoke inlet holes (321) and are spaced apart along the width direction of the oil net (3).

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