Range hood filter screen and range hood

Abstract

The range hood filter screen comprises a fixed frame, a plurality of first filter plates, a plurality of second filter plates and a plurality of third filter plates, the first filter plates, the second filter plates and the third filter plates are arranged on the fixed frame at intervals, and the second filter plates are located between the first filter plates and the third filter plates; a first oil smoke channel is formed between the first filter plate and the second filter plate, and a second oil smoke channel is formed between the second filter plate and the third filter plate; according to the range hood, the speed difference of airflow flowing through the different arc surfaces is utilized, then a vortex area is formed in the oil fume channel, oil fume is condensed in the vortex area in the rotating process, accordingly, oil dirt is further filtered, and the oil dirt filtering effect is greatly improved.

Description

Technical Field

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

[0002] The air inlet is the first channel for oil smoke to enter the range hood. In order to increase the effect of intercepting oil pollution, the current range hoods on the market generally install a filter at the air inlet. The filter has mesh holes in the shape of holes or spokes. Before entering the range hood, the oil smoke will first pass through the filter and condense on the filter, which has the effect of intercepting oil pollution. In order to achieve the filtering effect, some designs will set the mesh of the filter to be relatively small, but as the use time increases, the mesh is easy to clog. If it is not cleaned for a long time, the suction power of the range hood will decrease and the noise will be loud, which will affect the filtering effect of oil smoke and the overall performance of the range hood; but if the mesh is designed to be relatively large, although the wind resistance will be reduced, its filtering effect will be relatively poor. Therefore, how to design a filter with good filtering effect is particularly important. In addition, cleaning the filter has always been a major pain point for users. Since the oil stains attached to the filter and solidified are difficult to clean, users usually need to scrub the surface of the filter vigorously. However, the burrs on the filter mesh are large, which can easily cut hands, and scrubbing vigorously can easily cause the filter to deform. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a range hood filter and a range hood which have better filtering effect and are easy to disassemble and clean.

[0004] In order to solve the above technical problems, the technical solution used in the present invention is: a filter screen for a range hood, comprising a fixed frame, and a plurality of first filter plates, a second filter plate and a third filter plate arranged on the fixed frame at intervals, the second filter plate being located between the first filter plate and the third filter plate; a first oil fume channel is formed between the first filter plate and the second filter plate, and a second oil fume channel is formed between the second filter plate and the third filter plate; the cross section of the first oil fume channel increases from the air inlet to the smoke outlet of the range hood, and the cross section of the second oil fume channel decreases from the air inlet to the smoke outlet;

[0005] The first filter plate is provided with a first guide surface, and the second filter plate is provided with an upper inner curved surface on a side facing the first oil fume channel. The upper inner curved surface is closer to the smoke exhaust port than the first guide surface. When the fluid flows through the first oil fume channel, it can flow along the first guide surface toward the upper inner curved surface, and a vortex area is formed at the upper inner curved surface; the second filter plate is provided with an outer curved surface on a side facing the second oil fume channel, and the third filter plate is provided with an inner concave surface. When the fluid flows through the second oil fume channel, it can flow along the outer curved surface toward the inner concave surface, and the vortex area is also formed at the inner concave surface.

[0006] Preferably, a second guide surface is further provided on the first filter plate, the first guide surface is connected to the second guide surface, the first guide surface is protruding toward the direction of the first oil fume channel, the second guide surface is concave, and a lower inner arc surface is also provided on the second filter plate, the lower inner arc surface corresponds to the position of the first guide surface, the pressure of the fluid flowing through the first guide surface is less than the pressure of the fluid flowing through the lower inner arc surface, and the fluid can tend to flow in the direction from the first guide surface to the second guide surface, and flow from the second guide surface toward the upper inner arc surface.

[0007] Preferably, the radius of curvature of the upper inner curved surface is smaller than the radius of curvature of the second guide surface.

[0008] Preferably, the third filter plate includes a straight portion and an extension portion extending obliquely from one end of the straight portion to both sides, and the inner concave surface is formed at the connection between the straight portion and the extension portion; the pressure of the fluid flowing through the outer curved surface is lower than the pressure of the fluid flowing through the straight portion, so that the fluid can flow toward the outer curved surface, and the vortex area is formed at the inner concave surface.

[0009] Preferably, the curvature radius of the inner concave surface is smaller than the curvature radius of the outer curved surface.

[0010] Preferably, the first filter plate and the third filter plate are respectively provided with a hollow cavity extending through the first filter plate and the third filter plate in the axial direction thereof, and the hollow cavity is filled with a heat absorbing material.

[0011] Preferably, the fixed frame comprises an inner frame and an outer frame, the inner frame is provided with a mounting groove, the upper and lower ends of the first filter plate, the second filter plate and the third filter plate can be respectively inserted into the mounting groove and fixed to the inner frame; there are at least two outer frames, and the inner frame is clamped between the two outer frames; the outer frame is provided with a fixing member, and the fixing member is used to fix the two outer frames.

[0012] Preferably, the first filter plate, the second filter plate and the third filter plate are all made of aluminum alloy.

[0013] Preferably, the thickness of the filter screen is 16-25 mm.

[0014] A range hood, comprising the range hood filter described in any one of the above preferred embodiments, and also comprising a range hood body, a panel and an oil cup, the air inlet and the smoke exhaust port being provided on the range hood body, the panel being openably arranged on the range hood body, the air inlet being connected to a first oil fume passage, a second oil fume passage and the smoke exhaust port being communicated with when the panel is opened; the air inlet being closed when the panel is closed; the oil cup being arranged at the bottom of the range hood body and below the filter, the oil cup being detachably connected to the range hood body.

[0015] The beneficial effects of the present invention are mainly reflected in: in the present invention, two different oil fume channels are formed, and the arc surfaces between the partitions cooperate with each other, which plays a good guiding role in the flow direction of the oil fume during the exhaust process. At the same time, the speed difference between the airflow flowing through different arc surfaces is utilized to form eddy flow areas in the two oil fume channels respectively, so that the oil fume is condensed during the rotation in the eddy flow area, thereby further filtering the oil pollution, greatly improving the filtering effect of the oil pollution, so that the oil fume is fully filtered before being discharged from the exhaust port, and it is also more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the range hood of the present invention;

[0018] Figure 2 A schematic diagram of the filter screen in the present invention from a first viewing angle;

[0019] Figure 3 for Figure 2 The schematic diagram of the cross-sectional view of the "AA" part;

[0020] Figure 4 A schematic diagram of the airflow direction in the first oil fume channel and the second oil fume channel in the present invention;

[0021] Figure 5 is a schematic diagram of the cross-sectional structure of the first filter plate in the present invention;

[0022] Figure 6 is a schematic diagram of the cross-sectional structure of the second filter plate in the present invention;

[0023] Figure 7is a schematic diagram of the cross-sectional structure of the third filter plate in the present invention;

[0024] Figure 8 It is a schematic diagram of the explosion structure of the filter screen in the present invention;

[0025] Fig. 9 for Figure 8 Schematic diagram of the local enlarged structure of part A.

[0026] In the figure: range hood body 1, panel 2, oil cup 3, filter 4, first oil fume channel 401, second oil fume channel 402, vortex area 403, fixed frame 41, outer frame 410, inner frame 411, mounting groove 412, first filter plate 42, first guide surface 420, second guide surface 421, hollow cavity 422, second filter plate 43, upper inner arc surface 430, lower inner arc surface 431, outer arc surface 432, third filter plate 44, straight portion 440, extension portion 441, inner concave surface 442. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.

[0028] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] refer to Figure 1-9The present invention provides a range hood filter 4, comprising a fixed frame 41, and a plurality of first filter plates 42, second filter plates 43 and third filter plates 44 arranged at intervals on the fixed frame 41, wherein the second filter plate 43 is located between the first filter plate 42 and the third filter plate 44; that is, the second filter plate 43 is located on both sides of the first filter plate 42, a first oil fume channel 401 is formed between the first filter plate 42 and the second filter plate 43, and a second oil fume channel 402 is formed between the second filter plate 43 and the third filter plate 44. ; The cross-section of the first oil fume channel 401 increases gradually from the air inlet to the smoke exhaust port of the range hood, and the cross-section of the second oil fume channel 402 decreases gradually from the air inlet to the smoke exhaust port; In this embodiment, the two ends of the first oil fume channel 401 and the second oil fume channel 402 are respectively connected to the air inlet and the smoke exhaust port of the range hood, and the oil fume generated by the range hood can flow to the first oil fume channel 401 and the second oil fume channel 402 through the air inlet, and then be discharged to the outside through the smoke exhaust port.

[0031] The first filter plate 42 is provided with a first guide surface 420, and the first guide surface 420 is provided on both sides of the first filter plate 42. The second filter plate 43 is provided with an upper inner arc surface 430 on one side facing the first oil fume passage 401. The upper inner arc surface 430 is closer to the smoke outlet than the first guide surface 420 (that is, the upper inner arc surface 430 is located on one side of the first guide surface 420 and above the first guide surface 420). The fluid (referring to the airflow when the range hood is turned on) flows through the first oil fume passage 401. 01, it can flow along the first guide surface 420 toward the upper inner arc surface 430, and a vortex area 403 is formed at the upper inner arc surface 430; the second filter plate 43 is provided with an outer arc surface 432 on the side facing the second oil fume channel 402, and the third filter plate 44 is provided with an inner concave surface 442. When the fluid flows through the second oil fume channel 402, it can flow along the outer arc surface 432 toward the inner concave surface 442, and a vortex area 403 is also formed at the inner concave surface 442. By forming the above-mentioned vortex area 403, the airflow is continuously rotated in the vortex area 403. During the rotation process, the oil droplets are thrown out under the action of centrifugal force and condensed on the surface of each filter plate. Finally, under the action of gravity, they drip along the filter plate into the oil cup at the bottom of the range hood, thereby achieving a better effect of filtering oil fume.

[0032] The cross section mentioned above refers to the cross-sectional area of ​​the fluid (airflow) passing through the oil fume channel (including the first oil fume channel 401 and the second oil fume channel 402). The overall working principle is:

[0033] Since the cross section of the first oil fume channel 401 gradually increases along the flow direction of the fluid, that is, Figure 4The first oil fume channel 401 is narrow at the bottom and wide at the top. At this time, after the fluid enters the first oil fume channel 401, since the entrance of the channel is relatively small, the oil in the oil fume is quickly condensed when entering the channel. Using the Bernoulli principle, when the fluid flows through the first guide surface 420 of the first filter plate 42, the flow rate is large and the pressure is small. At this time, the airflow tends to flow in the direction of the first filter plate 42, and when it reaches the position of the upper inner arc surface 430, since the upper inner arc surface 430 is concave toward the inside of the second filter plate 43, the airflow generates a vortex in the concave area, and as new airflow continues to enter from below, the airflow in the vortex is squeezed out of the exhaust port (for details, please refer to Figure 4 , the direction indicated by the arrow in the figure is the direction of airflow flow), and the oil stains accumulated in the vortex area 403 during the process of the airflow swirling in the vortex area 403, and after condensation, they flow downward into the oil cup 3 of the range hood under the action of gravity, reducing the oil stains from directly entering the interior of the range hood, thereby improving the effect of oil stain filtering.

[0034] The cross section of the second oil fume channel 402 gradually decreases along the flow direction of the fluid, thereby forming Figure 4 In the case where the fluid is wide in the middle and narrow in the upper part, the resistance will gradually increase when the fluid flows through the second oil fume channel 402. Since the second filter plate 43 has an outer arc surface 432 formed on the side facing the second channel, that is, the outer arc surface 432 is protruded in the direction of the second oil fume channel 402, similarly, according to Bernoulli's principle, the airflow flows through the outer arc surface 432 at a high speed and a low pressure, so the fluid mainly tends to flow in the direction of the second filter plate 43. When the fluid is close to the inner concave surface 442 of the third filter plate 44, since the third filter plate 44 has the inner concave surface 442, the airflow will also generate vortices in the inner concave area (the flow direction of the airflow can also be referred to Figure 4 The oil in the airflow is accumulated in the area and flows downward into the oil cup 3 of the range hood under the action of gravity after condensation, so that the oil can be fully filtered.

[0035] Compared with the prior art, the present invention forms two different oil fume channels and uses different arc surface designs to guide the flow direction of oil pollution during the exhaust process. At the same time, the speed difference between the airflow passing through different arc surfaces is utilized to form a vortex area 403 in the oil fume channel, so that the oil fume is condensed during the rotation in the vortex area 403, thereby further filtering the oil pollution, greatly improving the filtering effect of the oil pollution, and making the oil fume fully filtered before being discharged from the exhaust port, which is also more environmentally friendly.

[0036] Furthermore, in the present invention, the locations on the three filter plates where the curvature is designed can be surface treated to make the surfaces of the locations where the curvature is smoother and have a better flow-guiding effect, while also reducing the noise generated by the eddy current region 403.

[0037] refer to Figure 4-6 In a preferred embodiment, a second guide surface 421 is further provided on the first filter plate 42, and the first guide surface 420 is connected to the second guide surface 421. In this embodiment, the first guide surface 420 is close to the air inlet of the range hood, and the second guide surface 421 is close to the smoke outlet of the range hood; the first guide surface 420 is protruding toward the direction of the first oil smoke channel 401, and the second guide surface 421 is concave. The second filter plate 43 is also provided with a lower inner arc surface 431, and the lower inner arc surface There is a certain interval between 431 and the upper inner arc surface 430, and the lower inner arc surface 431 is close to the air inlet, and the upper inner arc surface 430 is close to the smoke outlet; the lower inner arc surface 431 corresponds to the position of the first guide surface 420, and the pressure of the fluid flowing through the first guide surface 420 is less than the pressure of the fluid flowing through the lower inner arc surface 431, that is, using the Bernoulli principle, the fluid can flow toward the first guide surface 420 at this time, and flow from the second guide surface 421 toward the upper inner arc surface 430. Specifically, the airflow in the first oil smoke channel 401 will tend to flow toward one side of the first guide surface 420 at the beginning, and when it flows to the position of the second guide surface 421, it is affected by the upper inner arc surface 430 of the second filter plate 43 on the upper left side, and flows toward the upper inner arc surface 430, thereby forming the phenomenon of the vortex area 403.

[0038] refer to Figure 4-6 In a preferred embodiment, the curvature radius of the upper inner arc surface 430 is smaller than the curvature radius of the second guide surface 421. This arrangement is more conducive to the turning of the airflow, that is, when the airflow reaches the position of the second guide surface 421, it will flow from the position of the second guide surface 421 to the direction of the upper inner arc surface 430.

[0039] refer to Figure 4 , 67. In a preferred embodiment, the third filter plate 44 includes a straight portion 440 and an extension portion 441 extending obliquely from one end of the straight portion 440 (specifically, the end close to the smoke exhaust port) to both sides, the straight portion 440 is connected to the extension portion 441, and an inner concave surface 442 is formed at the connection between the straight portion 440 and the extension portion 441; the pressure of the fluid flowing through the outer arc surface 432 is lower than the pressure of the fluid flowing through the straight portion 440, so that the fluid can flow toward the outer arc surface 432, and a vortex area 403 is formed at the inner concave surface 442. Similarly, since the third filter plate 44 has a straight portion 440 at one end close to the air inlet, and the outer arc surface 432 of the second filter plate 43 is protruded toward the second oil fume channel 402, the airflow in the second oil fume channel 402 will tend to flow toward the second filter plate 43 at the beginning. When it reaches the extension portion 441 in the third filter plate 44 along the flow direction of the airflow, it is affected by the inner concave surface 442, and a vortex area 403 is formed in the area of ​​the inner concave surface 442, so that the oil stains are condensed when the oil fume rotates in the area, thereby achieving a better filtering effect.

[0040] refer to Figure 4 , 6 7. In a preferred embodiment, the curvature radius of the inner concave surface 442 is smaller than the curvature radius of the outer arc surface 432. Similarly, such a configuration is more conducive to the airflow turning to the inner concave surface 442 to form the vortex area 403.

[0041] refer to Figure 4-9 In a preferred embodiment, the first filter plate 42 and the third filter plate 44 are respectively provided with a hollow cavity 422 extending through the axial direction thereof, and the hollow cavity 422 is filled with a heat absorbing material (such as a refrigerant). By filling the hollow cavity 422 with the heat absorbing material, when the temperature of the oil smoke is transferred to each partition, the partition itself will be heated up. At this time, the heat absorbing material can absorb the heat of the partition, so that the filter surface is cooled to a certain extent, thereby further improving the effect of condensing the oil pollution.

[0042] refer to Figure 2 , 89. In a preferred embodiment, the fixed frame 41 includes an inner frame 411 and an outer frame 410. The inner frame 411 is provided with a mounting groove 412. The upper and lower ends of the first filter plate 42, the second filter plate 43 and the third filter plate 44 can be respectively inserted into the mounting groove 412 and fixed to the inner frame 411. In this embodiment, there are multiple mounting grooves 412, and the multiple mounting grooves 412 respectively correspond to the cross-sectional shapes and arrangement positions of the first filter plate 42, the second filter plate 43 and the third filter plate 44, so as to achieve the effect of quick disassembly and assembly. There are at least two outer frames 410, and the inner frame 411 is clamped between the two outer frames 410. The outer frame 410 is provided with a fixing member, and the fixing member is used to fix the two outer frames 410. Furthermore, mounting holes can be provided at the four corners of the outer frame 410, and the mounting holes are arranged through the thickness direction of the outer frame 410. After the filter plates are respectively inserted into the mounting grooves 412 for fixing, the inner frame 411 is clamped as a whole between the two outer frames 410 to form a preliminary fixed state, and then the overall installation effect of the filter 4 can be achieved by driving screws into the mounting holes. Of course, here is just an example of the method of fixing with screws, and other fixing methods such as snap-on and buckle connection are not excluded. As long as the overall installation and fixing of the filter 4 can be achieved, and the effect of convenient disassembly can be achieved. When the filter 4 needs to be cleaned, the outer frame 410 can be quickly disassembled, and then each filter plate can be removed from the mounting groove 412 to achieve the separate cleaning of each filter plate, which solves the pain point of users when cleaning, and the cleaning effect is also better.

[0043] In a preferred embodiment, the first filter plate 42, the second filter plate 43 and the third filter plate 44 are all made of aluminum alloy. Compared with traditional cold plates or stainless steel sheet metal, aluminum alloy has a larger specific heat capacity, which helps to absorb more heat in the oil smoke and quickly condense the oil droplets in the oil smoke on the filter plate surface. In addition, aluminum alloy is also easier to shape during processing and easier to process into a curved shape.

[0044] In a preferred embodiment, the thickness of the filter 4 is 16-25 mm. Specifically, the thickness of the filter 4 can be 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, preferably 16 mm. Since the filter 4 needs to be cleaned and maintained after a period of use, too large a thickness will increase the overall weight of the filter 4, which is not conducive to disassembly and cleaning; while too low a thickness will easily lead to unsatisfactory filtering effect on oil stains.

[0045] refer to Figure 1-9A range hood, comprising a range hood filter 4 as described in any one of the above preferred embodiments, and also comprising a range hood body 1, a panel 2 and an oil cup 3. The range hood body 1 is provided with an air inlet and a smoke exhaust port, and the panel 2 is openably arranged on the range hood body 1. When the panel 2 is opened, the air inlet is in an open state, so that the air inlet, the first oil fume channel 401, the second oil fume channel 402 and the smoke exhaust port are connected; when the panel 2 is closed, the air inlet can be closed; the oil cup 3 is arranged at the bottom of the range hood body 1 and is located below the filter 4, and is used to collect oil stains condensed and dripped from the filter 4. The oil cup 3 is detachably connected to the range hood body 1, so as to facilitate the cleaning of the oil stains collected in the oil cup 3.

[0046] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A filter screen for a range hood, characterized in that: The range hood comprises a fixed frame, and a first filter plate, a second filter plate and a third filter plate which are arranged on the fixed frame at intervals, wherein the second filter plate is located between the first filter plate and the third filter plate; a first oil fume channel is formed between the first filter plate and the second filter plate, and a second oil fume channel is formed between the second filter plate and the third filter plate; the cross section of the first oil fume channel increases from the air inlet to the smoke outlet of the range hood, and the cross section of the second oil fume channel decreases from the air inlet to the smoke outlet; The first filter plate is provided with a first guide surface, and the second filter plate is provided with an upper inner curved surface on a side facing the first oil fume channel. The upper inner curved surface is closer to the smoke exhaust port than the first guide surface. When the fluid flows through the first oil fume channel, it can flow along the first guide surface toward the upper inner curved surface, and a vortex area is formed at the upper inner curved surface; the second filter plate is provided with an outer curved surface on a side facing the second oil fume channel, and the third filter plate is provided with an inner concave surface. When the fluid flows through the second oil fume channel, it can flow along the outer curved surface toward the inner concave surface, and the vortex area is also formed at the inner concave surface.

2. The range hood filter according to claim 1, characterized in that: A second guide surface is also provided on the first filter plate, the first guide surface is connected to the second guide surface, the first guide surface is protruding toward the direction of the first oil fume channel, the second guide surface is concave, and a lower inner arc surface is also provided on the second filter plate, the lower inner arc surface corresponds to the position of the first guide surface, the pressure of the fluid flowing through the first guide surface is less than the pressure of the fluid flowing through the lower inner arc surface, and the fluid can tend to flow in the direction from the first guide surface to the second guide surface, and flow from the second guide surface toward the upper inner arc surface.

3. The range hood filter according to claim 2, characterized in that: The curvature radius of the upper inner curved surface is smaller than the curvature radius of the second guide surface.

4. The range hood filter according to claim 1, characterized in that: The third filter plate includes a straight portion and an extension portion extending obliquely from one end of the straight portion to both sides, and the inner concave surface is formed at the connection between the straight portion and the extension portion; the pressure of the fluid flowing through the outer curved surface is lower than the pressure of the fluid flowing through the straight portion, so that the fluid can flow toward the outer curved surface, and the vortex area is formed at the inner concave surface.

5. The range hood filter according to claim 1, characterized in that: The curvature radius of the inner concave surface is smaller than the curvature radius of the outer curved surface.

6. The range hood filter according to claim 1, characterized in that: The first filter plate and the third filter plate are respectively provided with a hollow cavity extending through the first filter plate and the third filter plate in the axial direction thereof, and the hollow cavity is filled with a heat absorbing material.

7. The range hood filter according to claim 1, characterized in that: The fixed frame includes an inner frame and an outer frame. The inner frame is provided with a mounting groove. The upper and lower ends of the first filter plate, the second filter plate and the third filter plate can be respectively inserted into the mounting groove and fixed to the inner frame; there are at least two outer frames, and the inner frame is clamped between the two outer frames; the outer frame is provided with a fixing piece, and the fixing piece is used to fix the two outer frames.

8. The range hood filter according to claim 1, wherein: The first filter plate, the second filter plate and the third filter plate are all made of aluminum alloy.

9. The range hood filter according to claim 1, wherein: The thickness of the filter screen is 16-25 mm.

10. A range hood, characterized in that: The range hood filter comprises the filter net as described in any one of claims 1 to 9 above, and also comprises a range hood body, a panel and an oil cup, the air inlet and the smoke exhaust port are provided on the range hood body, the panel is openably arranged on the range hood body, when the panel is opened, the air inlet can be connected with the first oil fume channel, the second oil fume channel and the smoke exhaust port; when the panel is closed, the air inlet can be closed; the oil cup is arranged at the bottom of the range hood body and below the filter net, and the oil cup is detachably connected to the range hood body.

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