Range hood

Abstract

The utility model discloses a range hood which comprises a machine shell, an upper oil smoke suction cavity, a lower oil smoke suction cavity, a lower oil smoke suction cavity and an upper oil smoke suction cavity, the upper flow guide plate is connected with the machine shell and covers at least part of the bottom opening; the first baffle and the upper flow guide plate are vertically arranged and at least partially overlapped, so that an oil fume suction channel communicated with the upper oil fume suction cavity is defined between the first baffle and the upper flow guide plate. According to the range hood disclosed by the embodiment of the utility model, the oil fume suction channel formed between the first baffle and the upper guide plate is adopted to replace an air inlet net in the related technology, so that the oil fume inlet amount of the oil fume suction channel can be reduced, and equivalently, a solid barrier is arranged between a human ear and a fan of the range hood; therefore, the direct radiation of the sound field at the position can be reduced, that is, the working noise of the height where the ears are located when the user stands is reduced, the sound quality of the range hood during working is improved, and the use experience of the user is improved.

Description

Technical Field

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

[0002] In the related art, a range hood includes an air inlet net. Oil fume can enter an oil fume cavity through air holes on the air inlet net under the action of a wind wheel. Since the height of the air inlet net is close to the height of a user's ears when standing, and a plurality of air holes on the air inlet net will increase the oil fume intake amount of the air inlet net, thereby increasing the working noise and affecting the user experience. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a range hood which can reduce the working noise at the height where the user's ears are located when standing, improve the sound quality during the operation of the range hood, and thus is beneficial to enhancing the user experience.

[0004] The range hood according to an embodiment of the utility model includes: a housing which defines an upper oil fume suction cavity having a bottom opening; an upper guide plate which is connected to the housing and covers at least part of the bottom opening; a first baffle which is vertically arranged with the upper guide plate and at least partially overlaps with the upper guide plate, so as to define an oil fume suction channel communicating with the upper oil fume suction cavity between the first baffle and the upper guide plate.

[0005] The range hood according to an embodiment of the utility model uses the oil fume suction channel formed between the first baffle and the upper guide plate to replace the air inlet net in the related art, which can reduce the oil fume intake amount of the oil fume suction channel, and is equivalent to arranging a solid barrier between the human ear and the fan of the range hood, thereby reducing the direct radiation of the sound field at this position, that is, reducing the working noise at the height where the user's ears are located when standing, improving the sound quality during the operation of the range hood, and thus being beneficial to enhancing the user experience. Moreover, using the first baffle and the upper guide plate to define the oil fume suction channel can also reduce the number of components of the range hood and simplify the structure of the range hood.

[0006] According to some embodiments of the utility model, the distance between the first baffle and the upper guide plate is 5 mm - 25 mm.

[0007] According to some embodiments of the utility model, an overcurrent cavity is provided in the housing. The overcurrent cavity is located below the upper oil fume suction cavity and communicates between the upper oil fume suction cavity and the oil fume suction channel; wherein, the first baffle is located below the upper guide plate, the first baffle is arranged close to the overcurrent cavity and extends downward in a direction approaching the overcurrent cavity.

[0008] In some embodiments, the angle between the first baffle and the horizontal plane is 5°-45°.

[0009] In some embodiments, the upper guide plate includes: a first plate body, the first plate body extends from top to bottom toward the flow chamber, the first baffle is arranged below the first plate body and defines the oil fume suction channel together with the first plate body.

[0010] In some examples, the first plate and the first baffle are arranged parallel to each other.

[0011] In some examples, the upper guide plate also includes: a second plate body, the second plate body is connected to one end of the first plate body away from the flow chamber, the second plate body extends from top to bottom in a direction away from the flow chamber, and a smoke collecting chamber connected to one end of the oil fume suction channel is defined between the second plate body and the first plate body; wherein, in the same horizontal plane, the projection of the first plate body covers the projection of the first baffle, and the projection of the second plate body does not overlap with the projection of the first baffle.

[0012] In some embodiments, the bottom wall of the flow chamber includes a first drainage portion and a second drainage portion, the first drainage portion and the second drainage portion are arranged in the extension direction of the flow chamber, and the first drainage portion and the second drainage portion extend from top to bottom in a direction away from each other.

[0013] In some examples, the slopes of the first drainage portion and the second drainage portion are greater than or equal to 8°.

[0014] In some embodiments, a guide flange extending downward is provided at one end of the upper guide plate close to the flow chamber.

[0015] In some embodiments, the casing further defines a lower oil-intake chamber located below the upper oil-intake chamber, and the lower oil-intake chamber has a side opening and the side opening is an oil-intake port; wherein a second baffle is provided in the casing, and the second baffle defines the flow chamber and the first flow port between the casing and the side facing the upper guide plate, and the first flow port connects the flow chamber and the upper oil-intake chamber, and the second baffle defines a second flow port between the casing and the side facing away from the upper guide plate, and the second flow port connects the upper oil-intake chamber and the lower oil-intake chamber.

[0016] In some examples, a size of the second flow opening is a, a size of the first flow opening is b, and 2:1≤a:b≤4:1.

[0017] In some examples, a lower guide plate is provided in the housing, and the lower guide plate extends from bottom to top in a direction away from the oil smoke suction port.

[0018] In some examples, the casing includes: a fixed casing that defines the upper oil suction cavity and at least part of the lower oil suction cavity; a movable casing that is vertically movably disposed at the bottom of the fixed casing between an extended position and a retracted position, the movable casing defines at least part of the lower oil suction cavity and the oil suction port is formed at a side of the movable casing.

[0019] In some examples, the range hood further includes: a fan including a volute, an impeller, and a motor, the axial direction of the volute extends longitudinally, the impeller is rotatably disposed in the volute, and the motor is connected to the impeller to drive the impeller to rotate; a flow dividing plate disposed between the upper guide plate and the volute and extending from bottom to top in a direction approaching the upper guide plate, a lower end of the flow dividing plate is connected to a top of the second baffle and an upper end thereof is connected to the volute, so that the oil fumes in the upper oil suction cavity and the lower oil suction cavity enter the volute from two axial ends of the volute respectively under the drive of the impeller.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 is a schematic structural diagram of a range hood according to an embodiment of the present utility model;

[0023] Figure 2 is a structural sectional view of a range hood according to an embodiment of the present utility model;

[0024] Figure 3 is Figure 2 an enlarged view of part A shown in

[0025] Figure 4 is Figure 2 a partial structural schematic diagram of the range hood shown in

[0026] Figure 5 is Figure 2 a structural schematic diagram of the second baffle shown in

[0027] Reference Signs:

[0028] Range hood 100,

[0029] Housing 10, upper oil suction cavity 101, oil suction channel 102, lower oil suction cavity 103, oil suction port 104, fixed housing 11, movable housing 12,

[0030] Upper deflector 20, first plate body 21, second plate body 22, deflector flanging 23, smoke collecting cavity 24,

[0031] First baffle 30,

[0032] Second baffle 40, flow-through cavity 401, first drainage part 402, second drainage part 403, first flow-through port 404, second flow-through port 405, convex part 406, bottom plate 41, side plate 42,

[0033] Lower deflector 50, volute 70, first end 71, second end 72, flow splitting plate 80. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0035] Refer to the following Figures 1-5 to describe the range hood 100 according to the embodiments of the present utility model.

[0036] As Figures 1-3 shown, the range hood 100 according to the embodiments of the present utility model includes a housing 10, an upper deflector 20 and a first baffle 30. The housing 10 defines an upper oil suction cavity 101, the upper oil suction cavity 101 has a bottom opening, the upper deflector 20 is connected to the housing 10 and covers at least part of the bottom opening, the first baffle 30 is arranged vertically with the upper deflector 20, and the first baffle 30 at least partially overlaps with the upper deflector 20. There is a gap between the first baffle 30 and the upper deflector 20, so that an oil suction channel 102 is defined between the first baffle 30 and the upper deflector 20, and the oil suction channel 102 communicates with the upper oil suction cavity 101.

[0037] Specifically, when the range hood 100 works, the oil fume can enter the upper oil suction cavity 101 from the gap between the first baffle 30 and the upper deflector 20, that is, from the oil suction channel 102 under the drive of the fan. After being processed, it finally discharges from the air outlet of the range hood 100. Since the oil fume enters the upper oil suction cavity 101 from the oil suction channel 102 formed between the first baffle 30 and the upper deflector 20, the oil intake amount of the oil suction channel 102 can be reduced, so the working noise at this position can be reduced, which is beneficial to improving the user experience.

[0038] According to the range hood 100 of the embodiment of the present utility model, the oil suction channel 102 formed between the first baffle 30 and the upper diversion plate 20 is adopted to replace the air inlet net in the related art, which can reduce the oil intake amount of the oil suction channel 102, and is equivalent to setting a physical barrier between the human ear and the fan of the range hood 100, so as to reduce the direct radiation of the sound field at this position, that is, reduce the working noise at the height where the user's ears are located when standing, improve the sound quality when the range hood 100 works, and further is beneficial to improving the user experience. Moreover, the first baffle 30 and the upper diversion plate 20 are used to define the oil suction channel 102, which can also reduce the number of components of the range hood 100 and simplify the structure of the range hood 100.

[0039] If the distance between the first baffle 30 and the upper diversion plate 20 is too small, that is, the width of the oil suction channel 102 is too small, it is easy to generate whistling and increase the working noise. If the distance between the first baffle 30 and the upper diversion plate 20 is too large, that is, the width of the oil suction channel 102 is too large, the user can directly see the oil suction channel 102, which affects the appearance visual experience of the range hood 100.

[0040] Therefore, as Figure 3 shown, according to some embodiments of the present utility model, the distance L between the first baffle 30 and the upper diversion plate 20 is 5 mm - 25 mm. On the one hand, it can reduce the generation of whistling, and on the other hand, it can improve the appearance visual experience of the range hood 100. Among them, the distance L between the first baffle 30 and the upper diversion plate 20 can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, etc.

[0041] Optionally, the distance L between the first baffle 30 and the upper diversion plate 20 can be 10 mm - 20 mm. For example, the distance L between the first baffle 30 and the upper diversion plate 20 can be 18 mm.

[0042] As Figure 3 shown, according to some embodiments of the present utility model, an overcurrent cavity 401 is provided in the housing 10. The overcurrent cavity 401 is located below the upper oil suction cavity 101, and the overcurrent cavity 401 communicates with the upper oil suction cavity 101 and the oil suction channel 102. The first baffle 30 is located below the upper diversion plate 20, and the first baffle 30 is arranged close to the overcurrent cavity 401 and extends from top to bottom in a direction close to the overcurrent cavity 401.

[0043] Under the action of the fan, the fume can flow from top to bottom along the extension direction of the fume suction channel 102, enter the flow-through cavity 401, and then flow from bottom to top through the communication port (such as the following first flow-through port 404) between the flow-through cavity 401 and the upper fume suction cavity 101, and enter the upper fume suction cavity 101. During this process, when the fume enters the flow-through cavity 401, it can buffer this part of the fume, reduce the impact of the fume on other airflows (such as the fume in the following lower fume cavity), so as to avoid the formation of local eddy currents of the fume. The first baffle 30 is arranged close to the flow-through cavity 401, so that the formed fume suction channel 102 is arranged close to the flow-through cavity 401, that is, far from the user, thereby further reducing the generation of noise at the height of the human ear and further improving the user experience.

[0044] In addition, during the flow of the fume in the fume suction channel 102, oil liquid may be formed on the upper surface of the first baffle 30. By arranging the first baffle 30 to extend from top to bottom towards the direction close to the flow-through cavity 401, the first baffle 30 can guide the oil liquid into the flow-through cavity 401, preventing the oil liquid from flowing outside the range hood 100 and dripping onto the stove top.

[0045] As Figure 3 shown, in some embodiments, the angle α between the first baffle 30 and the horizontal plane is 5°-45°. For example, the angle α between the first baffle 30 and the horizontal plane can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, etc.

[0046] In the above technical solution, by restricting the angle α between the first baffle 30 and the horizontal plane to satisfy the above range, the oil liquid formed on the upper surface of the first baffle 30 can smoothly flow into the flow-through cavity 401, preventing the oil liquid from accumulating and coagulating on the first baffle 30 for a long time, which affects the fume suction effect.

[0047] Optionally, the angle α between the first baffle 30 and the horizontal plane can be 10°-30°. For example, the angle α between the first baffle 30 and the horizontal plane can be 12°, 15°, 18°, etc.

[0048] As Figure 3 and Figure 4 shown, in some embodiments, the upper deflector 20 includes a first plate body 21. The first plate body 21 extends from top to bottom towards the direction close to the flow-through cavity 401. The first baffle 30 is arranged below the first plate body 21, and the first baffle 30 and the first plate body 21 define the fume suction channel 102.

[0049] In the above technical solution, by setting the upper deflector 20 to include the first plate body 21, on the one hand, the first plate body 21 can guide the oil fume, and on the other hand, the oil liquid formed on the lower surface of the first plate body 21 can smoothly flow into the flow-through cavity 401, avoiding the long-term accumulation and agglomeration of the oil liquid on the first plate body 21 of the upper deflector 20 and affecting the oil fume extraction effect.

[0050] In some examples, the first plate body 21 and the first baffle 30 are arranged parallel to each other, so that the width of the oil fume extraction channel 102 is consistent, ensuring the oil fume extraction effect.

[0051] As Figure 3 and Figure 4 shown, in some examples, the upper deflector 20 further includes a second plate body 22. The second plate body 22 is connected to one end of the first plate body 21 away from the flow-through cavity 401. The second plate body 22 extends downward in a direction away from the flow-through cavity 401. A smoke collecting cavity 24 communicating with one end of the oil fume extraction channel 102 is defined between the second plate body 22 and the first plate body 21. That is to say, the first plate body 21 and the second plate body 22 extend downward in a direction away from each other, so that the smoke collecting cavity 24 is defined between the first plate body 21 and the second plate body 22.

[0052] With such a setting, the oil fume can first gather in the smoke collecting cavity 24 and then enter the upper oil fume extraction cavity 101 along the oil fume extraction channel 102, which is beneficial to improving the oil fume extraction effect. In addition, looking at the range hood 100 from the side where the user is located, the second plate body 22 can block one end of the oil fume extraction channel 102, so that the oil fume extraction channel 102 can be hidden on one side of the second plate body 22, further enhancing the visual experience of the appearance of the range hood 100.

[0053] Among them, in the same horizontal plane, the projection of the first plate body 21 covers the projection of the first baffle 30, and the projection of the second plate body 22 does not overlap with the projection of the first baffle 30, so that the formed oil fume extraction channel 102 is far from the second plate body 22, that is, far from the user's position, which can further improve the sound quality when the range hood 100 works, and further enhance the user's use experience.

[0054] As Figure 3 and Figure 5 shown, in some embodiments, the bottom wall of the flow-through cavity 401 includes a first drainage portion 402 and a second drainage portion 403. The first drainage portion 402 and the second drainage portion 403 are arranged in the extending direction of the flow-through cavity 401 (such as Figure 5 shown in the horizontal direction), and the first drainage portion 402 and the second drainage portion 403 extend downward in a direction away from each other.

[0055] Thus, by providing the first drainage portion 402 and the second drainage portion 403 on the bottom wall of the oil passage cavity 401, the oil dripping into the oil passage cavity 401 can flow towards both ends in the extending direction of the oil passage cavity 401, and finally the oil can fall into the oil cup of the range hood 100, preventing the oil from accumulating and coagulating in the middle of the oil passage cavity 401 and being unable to be discharged.

[0056] As Figure 5 shown, in some examples, the slopes of the first drainage portion 402 and the second drainage portion 403 are greater than or equal to 8°. That is, the angle β between the first drainage portion 402 and the second drainage portion 403 and the horizontal plane is greater than or equal to 8°. For example, the angle β between the first drainage portion 402 and the second drainage portion 403 and the horizontal plane can be 8°, 10°, 15°, 20°, etc. By restricting the slopes of the first drainage portion 402 and the second drainage portion 403 to meet the above conditions, the problem of oil accumulation in the oil passage cavity 401 can be avoided.

[0057] In some examples, the middle part of the bottom wall of the oil passage cavity 401 extends upward to form a convex portion 406 in the middle of the bottom wall of the oil passage cavity 401, so that the first drainage portion 402 and the second drainage portion 403 can be respectively formed on both sides of the convex portion 406 in the transverse direction.

[0058] As Figure 3 and Figure 4 shown, in some embodiments, a drainage flanging 23 extending downward is provided at one end of the upper guide plate 20 close to the oil passage cavity 401. The drainage flanging 23 can not only guide the oil fume in the oil fume passage 102 into the oil passage cavity 401, but also guide the oil formed on the lower surface of the upper guide plate 20 into the oil passage cavity 401, thereby improving the working efficiency and performance of the range hood 100.

[0059] As Figures 1-2 and Figure 4 shown, in some embodiments, the housing 10 further defines a lower oil fume cavity 103, the lower oil fume cavity 103 is located below the upper oil fume cavity 101, and the lower oil fume cavity 103 has a side opening, and the side opening is the oil fume inlet 104.

[0060] When the range hood 100 is working, driven by the fan, a part of the oil fume can enter the upper oil fume cavity 101 from the gap between the first baffle 30 and the upper guide plate 20, that is, from the oil fume passage 102, and a part of the oil fume can enter the lower oil fume cavity 103 from the oil fume inlet 104. After the oil fume is processed, it finally exits from the air outlet of the range hood 100.

[0061] The oil suction channel 102 formed between the first baffle 30 and the upper deflector 20 is used to replace the air inlet net in the related art, which can reduce the oil inlet volume of the oil suction channel 102, that is, reduce the oil inlet volume of the upper oil suction cavity 101, making the negative pressure area of the stove closer to the lower oil suction port 104, so as to increase the oil inlet volume of the lower oil suction port 104, that is, increase the oil inlet volume of the lower oil suction cavity 103, which helps to improve the oil suction effect of the range hood 100.

[0062] Therefore, by using the oil suction channel 102 formed between the first baffle 30 and the upper deflector 20 to replace the air inlet net in the related art, not only can the working noise at the height of the user's ears when standing be reduced, the sound quality during the operation of the range hood 100 be improved, which is beneficial to enhancing the user experience, but also the oil suction effect of the range hood 100 can be improved.

[0063] Wherein, a second baffle 40 is provided in the housing 10. A flow-through cavity 401 and a first flow-through port 404 are defined between the side of the second baffle 40 facing the upper deflector 20 and the housing 10, and the first flow-through port 404 connects the flow-through cavity 401 and the upper oil suction cavity 101. A second flow-through port 405 is defined between the side of the second baffle 40 facing away from the upper deflector 20 and the housing 10, and the second flow-through port 405 connects the upper oil suction cavity 101 and the lower oil suction cavity 103.

[0064] Specifically, when the range hood 100 is operating, driven by the fan, a part of the oil fume can enter the flow-through cavity 401 from the gap between the first baffle 30 and the upper deflector 20, that is, from the oil suction channel 102, and then enter the upper oil suction cavity 101 through the first flow-through port 404. A part of the oil fume can enter the lower oil suction cavity 103 from the oil suction port 104, and then enter the upper oil suction cavity 101 through the second flow-through port 405. After the oil fume is processed, it is finally discharged from the exhaust port of the range hood 100.

[0065] In the above technical solution, by providing the second baffle 40 in the housing 10, the second baffle 40 can define the flow-through cavity 401 with the housing 10. On the one hand, it can prevent the oil fume flowing out of the oil suction channel 102 from colliding with the oil fume entering the lower oil suction cavity 103, thus generating local eddy currents. On the other hand, it can achieve flow splitting, so as to meet the preset air flow distribution ratio.

[0066] Such as Figure 4As shown, in some examples, the size of the second overcurrent port 405 is a, and the size of the first overcurrent port 404 is b, where 2:1 ≤ a:b ≤ 4:1. For example, the size a of the second overcurrent port 405 is 2 times, 3 times, or 4 times, etc. the size b of the first overcurrent port 404. With such a setting, the oil intake volume of the lower oil suction cavity 103 can be increased, and the oil intake volume of the upper oil suction cavity 101 can be reduced. On the basis of ensuring reduced working noise, the oil suction effect of the range hood 100 can be improved.

[0067] Among them, the second baffle 40 includes a bottom plate 41 and a side plate 42. The side plate 42 is disposed opposite to the casing 10 in the longitudinal direction, and the length direction of the side plate 42 extends along the transverse direction. The length direction of the bottom plate 41 extends along the transverse direction, and both sides in the width direction of the bottom plate 41 are respectively connected to the casing 10 and the lower end of the side plate 42. The middle part of the bottom plate 41 in the length direction bulges upward to define a convex part 406, so that a first drainage part 402 and a second drainage part 403 can be formed on opposite sides of the convex part 406.

[0068] In some examples, a lower deflector 50 is provided in the casing 10, and the lower deflector 50 extends from bottom to top in a direction away from the oil suction port 104. By providing the lower deflector 50, the oil fume near the stove can be guided into the lower oil fume cavity, thereby further improving the oil suction effect of the range hood 100.

[0069] As Figures 1-2 、 Figure 4 As shown, in some examples, the casing 10 includes a fixed casing 11 and a movable casing 12. The fixed casing 11 defines an upper oil suction cavity 101 and at least part of the lower oil suction cavity 103. The movable casing 12 is disposed at the bottom of the fixed casing 11 so as to be movable up and down between an extended position and a retracted position. The movable casing 12 defines at least part of the lower oil suction cavity 103, and the oil suction port 104 is formed on the side of the movable casing 12.

[0070] When the range hood 100 is not working, the movable casing 12 can be driven to move to the retracted position, so that the movable casing 12 can be received in the fixed casing 11, and the oil suction port 104 can be hidden in the fixed casing 11. On the one hand, it is beneficial to improve the visual experience of the appearance of the range hood 100. On the other hand, it can prevent foreign objects from entering the casing 10 through the oil suction port 104, playing a protective role.

[0071] When the range hood 100 is working, the movable casing 12 can be driven to move to the extended position, so that the movable casing 12 can extend out of the fixed casing 11, thereby exposing the oil suction port 104, and most of the oil fume near the stove can enter the lower oil suction cavity 103 through the oil suction port 104, further improving the oil suction effect.

[0072] As Figure 2As shown, in some examples, the range hood 100 further includes a blower, which includes a volute 70, an impeller, and a motor. The axial direction of the volute 70 extends longitudinally. The impeller is rotatably disposed within the volute 70, and the motor is connected to the impeller to drive the impeller to rotate.

[0073] Furthermore, the range hood 100 further includes a flow splitting plate 80, which is disposed between the upper deflector 20 and the volute 70, and the flow splitting plate 80 extends from bottom to top in a direction approaching the upper deflector 20. The lower end of the flow splitting plate 80 is connected to the top of the second baffle 40, and the upper end of the flow splitting plate 80 is connected to the volute 70, so that the oil fumes in the upper oil fume suction cavity 101 and the lower oil fume suction cavity 103 enter the volute 70 from both axial ends of the volute 70 respectively under the drive of the impeller.

[0074] Specifically, the two axial ends of the volute 70 are respectively a first end 71 and a second end 72. Inlets are formed at both axial ends of the volute 70. In the axial direction of the volute 70, the first end 71 of the volute 70 is disposed away from the lower oil fume suction cavity 103, and the second end 72 of the volute 70 is disposed close to the lower oil fume suction cavity 103. The upper end of the flow splitting plate 80 can be connected to the first end 71 at the bottom of the peripheral wall of the volute 70, or can be connected to the second end 72 at the bottom of the peripheral wall of the volute 70, or can also be connected to the middle part in the axial direction of the bottom of the peripheral wall of the volute 70.

[0075] When the range hood 100 is operating, under the drive of the blower, a part of the oil fumes can enter the overflow cavity 401 from the gap between the first baffle 30 and the upper deflector 20, that is, from the oil fume suction channel 102, then pass through the first overflow port 404, and enter the upper oil fume suction cavity 101 under the guidance of the flow splitting plate 80. A part of the oil fumes can enter the lower oil fume suction cavity 103 from the oil fume suction port 104, then pass through the second overflow port 405, and enter the upper oil fume suction cavity 101 under the guidance of the flow splitting plate 80. After the oil fumes are processed, they are finally discharged from the exhaust port of the range hood 100.

[0076] In the above technical solution, by providing the flow splitting plate 80, the oil fumes in the upper oil fume suction cavity 101 and the lower oil fume suction cavity 103 can be split, so that they can enter the volute 70 independently from both axial ends of the volute 70 respectively, reducing the convection problem, thereby further improving the oil fume suction effect of the range hood 100 and reducing the working noise.

[0077] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0078] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0079] Other components and operations of the range hood 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0080] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that: include: A casing, wherein the casing defines an upper oil fume suction chamber having a bottom opening; an upper guide plate connected to the housing and covering at least a portion of the bottom opening; The first baffle plate is arranged vertically with the upper guide plate and at least partially overlaps with the upper guide plate, so that an oil fume suction channel connected to the upper oil fume suction chamber is defined between the first baffle plate and the upper guide plate.

2. The range hood according to claim 1, characterized in that: The distance between the first baffle and the upper guide plate is 5mm-25mm.

3. The range hood according to claim 1, characterized in that: A flow chamber is provided in the housing, the flow chamber is located below the upper oil fume suction chamber and is connected to the upper oil fume suction chamber and the oil fume suction channel; Wherein, the first baffle is located below the upper guide plate, and the first baffle is arranged close to the flow chamber and extends from top to bottom toward the direction close to the flow chamber.

4. The range hood according to claim 3, characterized in that: The angle between the first baffle and the horizontal plane is 5°-45°.

5. The range hood according to claim 3, characterized in that: The upper guide plate comprises: The first plate body extends from top to bottom toward the direction close to the flow chamber, and the first baffle is arranged below the first plate body and defines the oil fume suction channel together with the first plate body.

6. The range hood according to claim 5, characterized in that: The first plate body and the first baffle are arranged parallel to each other.

7. The range hood according to claim 5, characterized in that: The upper guide plate also includes: a second plate body, the second plate body being connected to one end of the first plate body away from the flow chamber, the second plate body extending from top to bottom in a direction away from the flow chamber, and a smoke collecting chamber communicating with one end of the oil smoke suction channel being defined between the second plate body and the first plate body; Wherein, in the same horizontal plane, the projection of the first plate body covers the projection of the first baffle, and the projection of the second plate body does not overlap with the projection of the first baffle.

8. The range hood according to claim 3, characterized in that: The bottom wall of the flow chamber includes a first drainage portion and a second drainage portion, the first drainage portion and the second drainage portion are arranged in the extension direction of the flow chamber, and the first drainage portion and the second drainage portion extend from top to bottom in a direction away from each other.

9. The range hood according to claim 8, characterized in that: The slopes of the first drainage portion and the second drainage portion are greater than or equal to 8°.

10. The range hood according to claim 3, characterized in that: One end of the upper guide plate close to the flow chamber is provided with a guide flange extending downward.

11. The range hood according to claim 3, characterized in that: The housing further defines a lower oil-suction chamber located below the upper oil-suction chamber, wherein the lower oil-suction chamber has a side opening and the side opening is an oil-suction port; Among them, a second baffle is provided in the casing, and the second baffle is disposed on a side facing the upper guide plate and defines the flow chamber and the first flow port between the casing, and the first flow port connects the flow chamber and the upper oil fume suction chamber, and the second baffle is disposed on a side facing away from the upper guide plate and defines a second flow port between the casing, and the second flow port connects the upper oil fume suction chamber and the lower oil fume suction chamber.

12. The range hood according to claim 11, characterized in that: The size of the second flow opening is a, the size of the first flow opening is b, and 2:1≤a:b≤4:

1.

13. The range hood according to claim 11, characterized in that: A lower guide plate is arranged in the casing, and the lower guide plate extends from bottom to top in a direction away from the oil smoke suction port.

14. The range hood according to claim 11, characterized in that: The housing comprises: A fixed shell, wherein the fixed shell defines the upper oil fume suction chamber and at least a portion of the lower oil fume suction chamber; A movable shell is disposed at the bottom of the fixed shell so as to be movable up and down between an extended position and a stored position, the movable shell defines at least a portion of the lower oil fume suction chamber, and the oil fume suction port is formed on a side of the movable shell.

15. The range hood according to claim 11, characterized in that: The range hood further comprises: A fan, the fan comprising a volute, a wind wheel and a motor, the axial direction of the volute extending in the longitudinal direction, the wind wheel rotatably arranged in the volute, and the motor connected to the wind wheel to drive the wind wheel to rotate; A diverter plate is arranged between the upper guide plate and the volute and extends from bottom to top in a direction close to the upper guide plate. The lower end of the diverter plate is connected to the top of the second baffle and the upper end is connected to the volute, so that the oil smoke in the upper oil smoke suction chamber and the lower oil smoke suction chamber enters the volute from the axial ends of the volute respectively under the drive of the wind wheel.

Images