A smoke collecting device and a range hood

Abstract

The application discloses a smoke collecting device, which comprises a smoke collecting cavity, an upper smoke inlet cavity rotatably connected to the top end of the front plate of the smoke collecting cavity, a lower smoke inlet cavity fixed to the lower part of the front plate of the smoke collecting cavity, and an oil box arranged at the bottom of the smoke collecting cavity; when the upper smoke inlet cavity is in a closed state, oil drops in the upper smoke inlet cavity are guided by a flow guide piece to drop through a guide oil hole, flow into the lower smoke inlet cavity through a lower hidden smoke inlet, flow into the smoke collecting cavity, and finally flow to the oil box; when the upper smoke inlet cavity is in an open state, oil drops in the upper smoke inlet cavity are guided by the flow guide piece to flow to the inner plate, flow into the smoke collecting cavity through the inner plate, and finally flow to the oil box. The application further discloses an oil fume exhauster. The application has the beneficial effect of avoiding the formation of oil dirt due to internal condensation.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of smoke collection smoke collection device and extractor hood, belong to the technical field of kitchen appliance. BACKGROUND

[0002] Ultra-thin range hood is a kind of modern kitchen appliance, mainly used to suck and discharge the oil fume and peculiar smell generated in cooking process. Compared with traditional range hood, ultra-thin range hood is favored for its slim design and high efficiency, especially the smoke collection device of ultra-thin range hood, which has a relatively simple structure with thin thickness, saves space and is suitable for small kitchen or open kitchen.

[0003] In the prior art, the smoke collection device of ultra-thin range hood is provided with a smoke inlet cavity which can rotate, and the smoke inlet cavity is rotated to extend forward to suck smoke. After the oil fume enters the smoke inlet cavity, it flows into the smoke collection cavity. During the flow of oil fume in the smoke inlet cavity, oil droplets are formed by contacting the inner wall of the smoke inlet cavity, which are easy to condense and form oil stains, and are easy to breed bacteria and mold, thereby affecting the health of kitchen environment. SUMMARY

[0004] The purpose of the present application is to provide a smoke collection smoke collection device and extractor hood which can avoid internal condensation to form oil stains.

[0005] The present application is realized by the following technical solutions.

[0006] A smoke collection device comprises a smoke collection cavity, an upper smoke inlet cavity rotatably connected to the top of the front plate of the smoke collection cavity, a lower smoke inlet cavity fixed to the lower part of the front plate of the smoke collection cavity, and an oil box arranged at the bottom of the smoke collection cavity. The rotation of the upper smoke inlet cavity allows it to have a closed state of being tightly closed on the upper part of the front plate of the smoke collection cavity and an open state of extending to the front side of the smoke collection cavity.

[0007] The top of the lower smoke inlet cavity is provided with a lower hidden smoke inlet, and the inner plate of the upper smoke inlet cavity is provided with a oil guide hole at a position away from the rotary connection, which allows the oil droplets inside the upper smoke inlet cavity to flow out. A flow guide vane is arranged in the upper smoke inlet cavity, which guides the oil droplets to the oil guide hole when the upper smoke inlet cavity is in the closed state, and guides the oil droplets to the inner plate when the upper smoke inlet cavity is in the open state.

[0008] When the upper smoke inlet cavity is in the closed state, the oil droplets in the upper smoke inlet cavity are guided by the flow guide vane to the oil guide hole, flow into the lower smoke inlet cavity through the lower hidden smoke inlet, flow into the smoke collection cavity, and finally flow into the oil box.

[0009] When the upper smoke inlet cavity is in the open state, the oil droplets in the upper smoke inlet cavity are guided by the flow guide vane to the inner plate, flow into the smoke collection cavity through the inner plate, and finally flow into the oil box.

[0010] As a further improvement of the present application, the outer plate and the inner plate of the upper smoke inlet cavity are respectively inclined upward and downward from front to back in the open state, so that the oil drops in the upper smoke inlet cavity flow from the outer plate to the flow guide and are guided by the flow guide to the inner plate and then flow into the smoke collecting cavity.

[0011] As a further improvement of the present application, the flow guide extends along the left-right direction, one side edge of which is connected to the outer plate of the upper smoke inlet cavity, and the other side edge has a gap with the inner plate of the upper smoke inlet cavity; the flow guide is located above the oil guide hole in the closed state of the upper smoke inlet cavity, and is located at the rear side of the oil guide hole in the open state of the upper smoke inlet cavity.

[0012] As a further improvement of the present application, the flow guide is arranged to be inclined downward from front to back in the closed state of the upper smoke inlet cavity, so that the oil drops on the flow guide drop from the side edge close to the inner plate to the oil guide hole.

[0013] As a further improvement of the present application, the inner plate of the upper smoke inlet cavity is provided with an opening, and a negative pressure plate is arranged inside the upper smoke inlet cavity corresponding to the opening, the edge of the negative pressure plate and the edge corresponding to the opening have a gap, and the gap forms an upper hidden type smoke inlet.

[0014] As a further improvement of the present application, the negative pressure plate is arranged to be inclined downward from front to back in the open state of the upper smoke inlet cavity, so that the oil drops on the inner surface of the negative pressure plate flow into the smoke collecting cavity.

[0015] As a further improvement of the present application, two openings are arranged on the inner plate of the upper smoke inlet cavity, and correspond to two cookers on the cooking bench respectively.

[0016] As a further improvement of the present application, the two side portions of the lower smoke inlet cavity are each provided with a lower normally open type smoke inlet.

[0017] As a further improvement of the present application, the front plate of the smoke collecting cavity has a cavity opening corresponding to the upper smoke inlet cavity and matching the shape thereof, the smoke collecting cavity is movably connected with a covering panel covering the cavity opening, and can be pushed into the smoke collecting cavity by the upper smoke inlet cavity during the rotation of the upper smoke inlet cavity to the closed state, and the covering panel is provided with an elastic reset member for applying an elastic force to the covering panel to reset when the covering panel is not pushed by the upper smoke inlet cavity.

[0018] An oil fume extractor comprises the smoke collecting device and a fan device, and the fan device is connected to the top of the smoke collecting device.

[0019] The present application has the following beneficial effects:

[0020] The oil guide hole arranged on the inner plate of the upper smoke inlet cavity and the flow guide arranged in the upper smoke inlet cavity make the smoke collecting device have two oil paths corresponding to the opening state and the closed state of the upper smoke inlet cavity respectively, and make the oil droplets formed in the upper smoke inlet cavity flow into the oil box through different flow paths no matter the upper smoke inlet cavity is in the opening state or the closed state, and the oil droplets in the lower smoke inlet cavity can directly flow into the oil box of the smoke collecting cavity, so that the oil droplets in the upper smoke inlet cavity and the lower smoke inlet cavity can be prevented from accumulating and coagulating into oil dirt. BRIEF DESCRIPTION OF DRAWINGS

[0021] The preferred embodiments of the present application will be described in detail below with the help of the accompanying drawings, so as to help understand the purposes and advantages of the present application, in which:

[0022] Figure 1 is a structural schematic view of the smoke collecting device from one perspective;

[0023] Figure 2 is a structural schematic view of the smoke collecting device from another perspective;

[0024] Figure 3 is a three-dimensional schematic view of the smoke collecting device when the upper smoke inlet cavity is in the opening state (the arrows in the figure are the oil droplet flow directions);

[0025] Figure 4 is a partial enlarged view of Figure 3 ;

[0026] Figure 5 is a three-dimensional schematic view of the smoke collecting device when the upper smoke inlet cavity is in the closed state (the arrows in the figure are the oil droplet flow directions);

[0027] Figure 6 is a partial enlarged view of Figure 5 ;

[0028] Figure 7 is a structural schematic view of the range hood. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below according to the drawings and embodiments.

[0030] In this specification, the orientation terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structure shown in the drawings, and the words "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a particular component, which are relative concepts, so they can change accordingly according to their different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0031] Embodiment 1:

[0032] A smoke collecting device, referring to Figures 1-6 , comprising a smoke collecting cavity 1, an upper smoke inlet cavity 2 and a lower smoke inlet cavity 3, wherein the upper smoke inlet cavity 2 is rotationally connected to the top of the front plate 11 of the smoke collecting cavity 1 and is in air communication with the front plate 11, the lower smoke inlet cavity 3 is fixed to the lower part of the front plate 11 of the smoke collecting cavity 1 and is in air communication with the front plate 11, and both the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 can suck in and flow into the smoke collecting cavity 1. The upper smoke inlet cavity 2 is provided with a rotation range and has two limit states, one of which is that the upper smoke inlet cavity 2 is folded tightly on the upper part of the front plate 11 of the smoke collecting cavity 1, that is, the closed state of the upper smoke inlet cavity 2, and the other limit position is that the upper smoke inlet cavity 2 extends to the smoke collecting cavity 1, that is, the open state of the upper smoke inlet cavity 2, and the rotation range of the upper smoke inlet cavity 2 is between the closed state and the open state.

[0033] When the upper smoke inlet cavity 2 is in the closed state, it is folded on the upper part of the front plate 11 of the smoke collecting cavity 1, and the lower smoke inlet cavity 3 is fixed to the lower part of the front plate 11 of the smoke collecting cavity 1, so that the smoke collecting device as a whole presents a vertical flat structure, which belongs to a typical ultra-thin smoke machine in structure.

[0034] The top of the lower smoke inlet cavity 3 is provided with a lower hidden smoke inlet 3b, the inner plate 21 of the upper smoke inlet cavity 2 is provided with an oil guide hole h at a position away from the rotational connection, and the upper smoke inlet cavity 2 is provided with a flow guide piece 23, which is used to guide the oil droplets in the upper smoke inlet cavity 2 to the oil guide hole h that allows the oil droplets in the upper smoke inlet cavity 2 to flow out when the upper smoke inlet cavity 2 is in the closed state, and to the inner plate 21 when the upper smoke inlet cavity 2 is in the open state.

[0035] When the upper smoke inlet cavity 2 is in the closed state, the oil droplets in the upper smoke inlet cavity 2 are guided by the flow guide piece 23 to the oil guide hole h, flow into the lower smoke inlet cavity 3 through the lower hidden smoke inlet 3b, flow into the smoke collecting cavity 1 and finally flow to the oil box 4. When the upper smoke inlet cavity 2 is in the open state, the oil droplets in the upper smoke inlet cavity 2 are guided by the flow guide piece 23 to the inner plate 21, flow into the smoke collecting cavity 1 through the inner plate 21 and finally flow to the oil box 4.

[0036] In the embodiment, the oil guide hole h arranged on the inner plate 21 of the upper smoke inlet cavity 2 and the flow guide piece 23 arranged in the upper smoke inlet cavity 2 make the smoke collecting device have two oil paths corresponding to the opening state and the closed state of the upper smoke inlet cavity 2 respectively. The paths of the two oil paths are as follows: the oil path when the upper smoke inlet cavity 2 is in the closed state: the upper smoke inlet cavity 2-flow guide piece 23-oil guide hole h-hidden smoke inlet 3b-lower smoke inlet cavity 3-oil box 4; the oil path when the upper smoke inlet cavity 2 is in the open state: the upper smoke inlet cavity 2-flow guide piece 23-inner plate 21-smoke collecting cavity 1-oil box 4. The arrangement of the two oil paths makes the oil drops formed in the upper smoke inlet cavity 2 in the open state or the closed state flow into the oil box 4 through different flow paths, and the oil drops in the lower smoke inlet cavity 3 can directly flow into the oil box 4 of the smoke collecting cavity 1, thereby avoiding the accumulation and condensation of oil drops in the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3.

[0037] It should be noted that in the embodiment, the top of the lower smoke inlet cavity 3 is provided with a lower hidden smoke inlet 3b. When the upper smoke inlet cavity 2 is in the closed state, the lower hidden smoke inlet 3b is covered by the upper smoke inlet cavity 2 and cannot inhale oil fume, at this time, the lower hidden smoke inlet 3b allows oil drops to fall into the lower smoke inlet cavity 3 and constitutes part of the oil path; when the upper smoke inlet cavity 2 is in the open state, the upper smoke inlet cavity 2 extends to the front side of the smoke collecting cavity 1, so that the lower hidden smoke inlet 3b is in the open state and can inhale oil fume, at this time, the lower hidden smoke inlet 3b can inhale oil fume into the lower smoke inlet cavity 3 as the smoke inlet of the lower smoke inlet cavity 3, therefore, the lower hidden smoke inlet 3b has different functions corresponding to different states of the upper smoke inlet cavity 2, which improves the functional integration.

[0038] In the embodiment, when the upper smoke inlet cavity 2 is in the open state, the outer plate 22 and the inner plate 21 are respectively inclined upward and downward from front to back, and the oil drops generated in the upper smoke inlet cavity 2 are basically formed on the outer plate 22 and the inner plate 21. When the upper smoke inlet cavity 2 is in the open state, the inclination of the outer plate 22 and the inner plate 21 makes the oil drops on the outer plate 22 flow from back to front and be guided to the inner plate 21 by the flow guide piece 23, and the oil drops on the inner plate 21 and the oil drops formed on the inner plate 21 flow from front to back and flow into the smoke collecting cavity 1 and finally flow into the oil box 4.

[0039] In the embodiment, the baffle 23 extends along the left-right direction, one side edge of which is connected to the outer plate 22 of the upper smoke inlet cavity 2 and the connection position is close to the oil guide hole h, and the other side edge has a gap with the inner plate 21 of the upper smoke inlet cavity 2. When the upper smoke inlet cavity 2 is in the closed state, the baffle 23 is located above the oil guide hole h, so that the oil drops on the inner plate 21 flow from top to bottom to the baffle 23 and drip from the baffle 23 to the oil guide hole h, and the oil drops on the outer plate 22 flow from top to bottom to the oil guide hole h, and the oil drops dripping from the oil guide hole h flow into the lower smoke inlet cavity 3 through the lower hidden smoke inlet 3b, flow into the smoke collection cavity 1 and finally flow to the oil box 4. When the upper smoke inlet cavity 2 is in the open state, the baffle 23 is located at the rear side of the oil guide hole h, so that the oil drops on the outer plate 22 of the upper smoke inlet cavity 2 flow from rear to front to the baffle 23 and then drip from the baffle 23 to the inner plate 21. Since the baffle 23 is located at the rear side of the oil guide hole h, the oil drops dripping from the inner plate 21 to the oil guide hole h can be prevented from dripping onto the cooking table from the oil guide hole h.

[0040] In the embodiment, when the upper smoke inlet cavity 2 is in the closed state, the baffle 23 is downwardly inclined from front to rear, so that the oil drops on the baffle 23 drip from the side edge close to the inner plate 21 to the oil guide hole h, avoiding the accumulation of oil drops on the baffle 23, and improving the flow speed of the oil drops on the baffle 23, thereby improving the oil discharge efficiency.

[0041] In the embodiment, the inner plate 21 of the upper smoke inlet cavity 2 is provided with an opening 2A, and a negative pressure plate 24 is arranged at the opening 2A in the interior of the upper smoke inlet cavity 2. The edge of the negative pressure plate 24 and the edge corresponding to the opening 2A have a gap, and the gap forms the upper hidden smoke inlet 2b. Since the upper hidden smoke inlet 2b is arranged on the inner plate 21 of the upper smoke inlet cavity 2, the upper smoke inlet cavity 2 is shielded by the front plate 11 of the smoke collection cavity 1 when the upper smoke inlet cavity 2 is in the closed state, and the inner plate 21 of the upper smoke inlet cavity 2 and the upper hidden smoke inlet 2b extend to the front side of the smoke collection cavity 1 when the upper smoke inlet cavity 2 is in the open state, so that the inner plate 21 of the upper smoke inlet cavity 2 and the upper hidden smoke inlet 2b are in the open state and can inhale the oil fume, thereby the oil fume can be inhaled into the upper smoke inlet cavity 2 through the upper hidden smoke inlet 2b.

[0042] In addition, since the upper hidden smoke inlet 2b is formed by the gap between the opening 2A and the edge of the negative pressure plate 24, the negative pressure intensity at the opening 2A of the upper smoke inlet cavity 2 gradually increases from the middle to the edge, and the negative pressure is the strongest at the upper hidden smoke inlet 2b, so that the escape of the oil fume can be effectively avoided during the oil fume suction process, and the oil fume suction efficiency is improved.

[0043] In the embodiment, when the upper smoke inlet cavity 2 is in the open state, the negative pressure plate 24 is arranged downwardly from front to back, and the oil fume is sucked into the upper hidden smoke inlet 2b at the edge of the negative pressure plate 24 after entering the opening 2A of the upper smoke inlet cavity 2, so that the oil fume and the inner surface of the negative pressure plate 24 are in sufficient contact, and oil droplets are formed on the inner surface of the negative pressure plate 24. Since the negative pressure plate 24 is downwardly inclined from front to back, the oil droplets on the inner surface of the negative pressure plate 24 flow from front to back, and flow into the smoke collection cavity 1. When the upper smoke inlet cavity 2 is in the closed state, the oil droplets on the negative pressure plate 24 flow downward from top to bottom and drop onto the guide vane 23, and then drop through the oil guide hole h.

[0044] In the embodiment, the opening 2A on the inner plate 21 of the upper smoke inlet cavity 2 is provided with two openings, respectively corresponding to two burners on the cooking table, so that the smoke suction of the upper smoke inlet cavity 2 is more targeted. If two cooking tables are used for cooking at the same time, the upper hidden smoke inlets 2b of the two openings 2A respectively suck the oil fume generated by the two cooking tables. If only one cooking table is used for cooking, the upper hidden smoke inlet 2b above it performs main smoke suction, and the upper hidden smoke inlet 2b on the other side is located on the side of it, which plays a role in auxiliary smoke suction, thereby avoiding the lateral escape of oil fume.

[0045] In the embodiment, the lower smoke inlet cavity 3 is provided with a lower normally open smoke inlet 3a on each side, and the lower normally open smoke inlets 3a on both sides of the lower smoke inlet cavity 3 are always in an open state and can suck oil fume, so that both can suck smoke when the upper smoke inlet cavity 2 is in the open state or the closed state.

[0046] The smoke collection device can suck smoke through the lower normally open smoke inlet 3a when the upper smoke inlet cavity 2 is in the open state, so that the smoke collection device has a small smoke amount suction performance. The smoke collection device can suck smoke through the lower normally open smoke inlet 3a, the upper hidden smoke inlet 2b and the lower hidden smoke inlet 3b when the upper smoke inlet cavity 2 is in the closed state, so that the smoke collection device has a large smoke amount suction performance, and since the upper smoke inlet cavity 2 protrudes forward when in the open state, the smoke suction coverage is also expanded. Therefore, when the user cooks and generates a small amount of oil fume, the upper smoke inlet cavity 2 does not need to be controlled to be open, and the oil fume can be sucked away. When a large amount of oil fume is generated, the upper smoke inlet cavity 2 is controlled to be open, the number of smoke inlets is increased, and the smoke suction coverage is expanded, so as to meet the smoke suction requirement of large oil fume amount.

[0047] In the embodiment, the front plate 11 of the smoke collecting cavity 1 has a cavity opening corresponding to the upper smoke inlet cavity 2 and matching the shape thereof. The cavity opening can be a hollow structure, a sunken structure, or other structure capable of forming an opening. Since the upper smoke inlet cavity 2 is gradually tapered towards the middle from the top to the bottom, the upper smoke inlet cavity 2 appears as a trapezoidal structure. Correspondingly, the cavity opening of the front plate 11 also appears as a trapezoidal structure. The smoke collecting cavity 1 movably connects a cover panel 12 that covers the cavity opening, and the cover panel 12 can be pushed into the smoke collecting cavity 1 by the upper smoke inlet cavity 2 during the rotation of the upper smoke inlet cavity 2 to the closed state. The cover panel 12 is provided with an elastic reset member (not shown in the figure), typically a spring, for exerting a spring force on the cover panel 12 to reset it when it is not pushed by the upper smoke inlet cavity 2. On the one hand, by movably connecting the cover panel 12 to the smoke collecting cavity 1 and pushing the cover panel 12 into the smoke collecting cavity 1 by the upper smoke inlet cavity 2 during the rotation of the upper smoke inlet cavity 2 to the closed state, interference between the front plate 11 of the smoke collecting cavity 1 and the upper smoke inlet cavity 2 in the closed state is avoided, and the front-to-rear width of the smoke collecting device is smaller, i.e., the smoke collecting device is more super-thin. On the other hand, since the cover panel 12 can be pushed into the smoke collecting cavity 1 by the upper smoke inlet cavity 2, the thickness of the upper smoke inlet cavity 2 is less limited, i.e., the width of the two sides of the upper smoke inlet cavity 2 is less limited, thereby maximizing the width of the two upper smoke inlet openings 2a of the upper smoke inlet cavity 2 to improve the suction capacity thereof.

[0048] In the embodiment, more specifically, the bottom edge of the cover panel 12 is rotationally connected to the bottom edge of the corresponding cavity opening of the front plate 11, and the elastic reset member is specifically a torsion spring and is arranged at the rotationally connected part of the cover panel 12. When the cover panel 12 is pushed by the upper smoke inlet cavity 2, the cover panel 12 is flipped into the smoke collecting cavity 1 with the bottom edge as the rotation axis. When the upper smoke inlet cavity 2 is in the closed state, the cover panel 12 is located in the smoke collecting cavity 1, and the cover panel 12 is inclined rearward from the bottom edge to the top edge. It should be noted that when the upper smoke inlet cavity 2 is in the open state, oil fumes will contact the cover panel 12 to form oil droplets on the cover panel 12. When the user completes cooking and the upper smoke inlet cavity 2 is rotated to the closed state, the cover panel 12 is pushed into the smoke collecting cavity 1 and is inclined, so that the oil droplets on the cover panel 12 will flow downward along the front surface of the cover panel 12 and drop into the smoke collecting cavity 1, thereby reducing the oil stains on the cover panel 12.

[0049] Embodiment 2

[0050] A range hood, with reference to Figure 7, including the smoke collecting device, the fan device 5, wherein the smoke collecting device is as shown in the embodiment 1, the fan device 5 is connected at the top of the smoke collecting device, the fan device 5 is provided with a fan, the fan is started to form a negative pressure at the corresponding smoke inlet of the smoke collecting device so as to suck the oil fume into the smoke collecting cavity 1, then into the fan device 5, and finally discharged by the exhaust pipe (not shown in the figure).

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fume collecting device, characterized by, The device comprises a smoke collecting cavity (1), an upper smoke inlet cavity (2) rotatably connected to the top of the front plate (11) of the smoke collecting cavity (1), a lower smoke inlet cavity (3) fixed to the lower part of the front plate (11) of the smoke collecting cavity (1), and an oil box (4) arranged at the bottom of the smoke collecting cavity (1). The rotation of the upper smoke inlet cavity (2) allows it to have a closed state in which it is tightly closed to the upper part of the front plate (11) of the smoke collecting cavity (1), and an open state in which it extends to the front side of the smoke collecting cavity (1). The top of the lower smoke inlet cavity (3) is provided with a lower hidden smoke inlet (3b), the inner plate (21) of the upper smoke inlet cavity (2) is provided with an oil guiding hole (h) at a position away from the rotary connection, which allows the oil droplets inside the upper smoke inlet cavity (2) to flow out, and the upper smoke inlet cavity (2) is provided with a flow guide vane (23) for guiding the oil droplets inside the upper smoke inlet cavity (2) to the oil guiding hole (h) when the upper smoke inlet cavity (2) is in the closed state, and guiding the oil droplets to the inner plate (21) when the upper smoke inlet cavity (2) is in the open state. When the upper smoke inlet cavity (2) is in the closed state, the oil droplets inside the upper smoke inlet cavity (2) are guided by the flow guide vane (23) to the oil guiding hole (h) and fall, flow into the lower smoke inlet cavity (3) through the lower hidden smoke inlet (3b), flow into the smoke collecting cavity (1), and finally flow into the oil box (4). When the upper smoke inlet cavity (2) is in the open state, the oil droplets inside the upper smoke inlet cavity (2) are guided by the flow guide vane (23) to the inner plate (21), flow into the smoke collecting cavity (1) through the inner plate (21), and finally flow into the oil box (4).

2. The smoke device of claim 1, wherein, When the upper smoke inlet cavity (2) is in the open state, the outer plate (22) and the inner plate (21) of the upper smoke inlet cavity (2) are respectively inclined upward and downward from front to back, so that the oil droplets inside the upper smoke inlet cavity (2) flow from the outer plate (22) to the flow guide vane (23) and are guided by the flow guide vane (23) to the inner plate (21), and then flow into the smoke collecting cavity (1) through the inner plate (21).

3. The air management device of claim 2, wherein, The flow guide vane (23) extends along the left and right directions, one side edge of which is connected to the outer plate (22) of the upper smoke inlet cavity (2), and the other side edge has a gap with the inner plate (21) of the upper smoke inlet cavity (2); when the upper smoke inlet cavity (2) is in the closed state, the flow guide vane (23) is located above the oil guiding hole (h), and when the upper smoke inlet cavity (2) is in the open state, the flow guide vane (23) is located at the rear side of the oil guiding hole (h).

4. The air management device of claim 3, wherein, When the upper smoke inlet cavity (2) is in the closed state, the flow guide vane (23) is arranged to be inclined downward from front to back, so that the oil droplets on the flow guide vane (23) fall from the side edge close to the inner plate (21) to the oil guiding hole (h).

5. The air management device of claim 1, wherein, The inner plate (21) of the upper smoke inlet cavity (2) is provided with an opening (2A), and a negative pressure plate (24) is arranged inside the upper smoke inlet cavity (2) corresponding to the opening (2A), the edge of the negative pressure plate (24) and the edge corresponding to the opening (2A) have a gap, and the gap forms an upper hidden smoke inlet (2b).

6. The air management device of claim 5, wherein, The upper smoke inlet cavity (2) is inclined downward from front to back in the open state, so that the oil drops on the inner surface of the negative pressure plate (24) flow into the smoke collecting cavity (1).

7. The air management device of claim 5, wherein, The openings (2A) on the inner plate (21) of the upper smoke inlet cavity (2) are provided with two, respectively corresponding to two burners on the cooking bench.

8. The air management device of claim 1, wherein, The lower smoke inlet cavity (3) is provided with a lower normally open smoke inlet (3a) on each side.

9. The smoke device of claim 1, wherein, The front plate (11) of the smoke collecting cavity (1) has a cavity opening corresponding to the upper smoke inlet cavity (2) and matching its shape, the smoke collecting cavity (1) is movably connected with a covering panel (12) covering the cavity opening, and can be pushed into the smoke collecting cavity (1) by the upper smoke inlet cavity (2) during the rotation of the upper smoke inlet cavity (2) to the closed state, and the covering panel (12) is provided with an elastic reset member for applying elastic force to the covering panel (12) to reset when it is not pushed by the upper smoke inlet cavity (2).

10. A range hood characterized by The smoke collecting device of any one of claims 1-9, a fan device (5) connected to the top of the smoke collecting device.

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