Smoke collecting device and range hood

Abstract

The smoke collecting device comprises a smoke collecting cavity, an upper smoke inlet cavity with the top rotationally connected to the upper portion of the front face of the smoke collecting cavity, a lower smoke inlet cavity fixed to the lower portion of the front face of the smoke collecting cavity, and two side smoke inlet cavities fixed to the two side portions of the front face of the smoke collecting cavity correspondingly. The upper smoke inlet cavity and the lower smoke inlet cavity are provided with an upper normally-open smoke inlet and a lower normally-open smoke inlet respectively, and the upper normally-open smoke inlet and the lower normally-open smoke inlet are in an open state and can suck oil smoke when the upper smoke inlet cavity is located at any rotating position. The upper smoke inlet cavity, the lower smoke inlet cavity and the side smoke inlet cavity are provided with an upper hidden smoke inlet, a lower hidden smoke inlet and a side hidden smoke inlet respectively, the upper hidden smoke inlet, the lower hidden smoke inlet and the side hidden smoke inlet are in a closed state and cannot suck oil smoke when the upper smoke inlet cavity is in a closed state, and the upper smoke inlet cavity is in an open state and can suck oil smoke when the upper smoke inlet cavity is in other rotating positions. The invention further discloses the range hood. The method has the beneficial effect that the method can adapt to diversified cooking scenes.

Description

Technical Field

[0001] The invention relates to a smoke collecting device and a range hood, belonging to the technical field of kitchen appliances. Background Art

[0002] Ultra-thin hoods are a modern kitchen appliance that is mainly used to extract fumes and odors generated during cooking. Compared with traditional hoods, ultra-thin hoods are favored for their slim design and efficient performance, especially the smoke collection device of ultra-thin hoods, which is thinner and simpler in structure, saves space, and is suitable for small kitchens or open kitchens.

[0003] In the prior art, the smoke collecting device of the ultra-thin range hood is limited by its simple structure, so that its smoking coverage is small, resulting in certain limitations in its smoking performance, and its adaptability to various cooking scenes is poor. Summary of the invention

[0004] The object of the present invention is to provide a smoke collecting device and a range hood, which have both low smoke volume and high smoke volume smoking performance, and have a large smoking coverage area, and can adapt to diversified cooking scenes.

[0005] The present invention is achieved through the following technical solutions.

[0006] A smoke collecting device comprises a smoke collecting chamber, an upper smoke inlet chamber rotatably connected to the upper front part of the smoke collecting chamber, a lower smoke inlet chamber fixed to the lower front part of the smoke collecting chamber, and two side smoke inlet chambers respectively fixed to the two side parts of the front part of the smoke collecting chamber, wherein the rotation range of the upper smoke inlet chamber is limited between a closed state in which the upper smoke inlet chamber is folded in the smoke collecting chamber and an open state in which the upper smoke inlet chamber is extended to the front side of the smoke collecting chamber; The upper smoke inlet cavity and the lower smoke inlet cavity are respectively provided with an upper normally open smoke inlet and a lower normally open smoke inlet, both of which are in an open state and can inhale oil smoke when the upper smoke inlet cavity is in any rotation position; The upper smoke inlet chamber, the lower smoke inlet chamber and the side smoke inlet chamber are respectively provided with an upper hidden smoke inlet port, a lower hidden smoke inlet port and a side hidden smoke inlet port, which are in a closed state and cannot inhale oil smoke when the upper smoke inlet chamber is in a closed state, and are in an open state and can inhale oil smoke when the upper smoke inlet chamber is in other rotation positions.

[0007] As a further improvement of the present invention, when the upper smoke inlet chamber is in a closed state, the upper smoke inlet chamber and the lower smoke inlet chamber protrude forward relative to the two side smoke inlet chambers, and the upper smoke inlet chamber and the lower smoke inlet chamber form a complete outer covering structure that covers most of the front area of ​​the smoke collecting chamber.

[0008] As a further improvement of the present invention, the upper normally-open smoke inlet is arranged on two sides of the upper smoke inlet cavity, and the lower normally-open smoke inlet is arranged on two sides of the lower smoke inlet cavity. When the upper smoke inlet cavity is in a closed state, the protruding portion of the upper normally-open smoke inlet relative to the side smoke inlet cavity is exposed, and forms two side smoke inlet portions located on both sides of the outer covering structure together with the lower normally-open smoke inlet.

[0009] As a further improvement of the present invention, the upper hidden smoke inlet is arranged on the inner surface of the upper smoke inlet cavity, and is blocked by the front side of the smoke collecting cavity when the upper smoke inlet cavity is in a closed state; the lower hidden smoke inlet is arranged at the top of the lower smoke inlet cavity, and is blocked by the upper smoke inlet cavity when the upper smoke inlet cavity is in a closed state.

[0010] As a further improvement of the present invention, an opening is provided on the inner surface of the upper smoke inlet chamber, a negative pressure plate is provided inside the upper smoke inlet chamber at the corresponding opening, and a gap is provided between the edge of the negative pressure plate and the edge corresponding to the opening, and the gap forms the upper hidden smoke inlet.

[0011] As a further improvement of the present invention, the side hidden smoke inlet is arranged on the inner side of the side smoke inlet cavity facing the upper smoke inlet cavity, and is blocked by the side of the upper smoke inlet cavity when the upper smoke inlet cavity is in a closed state.

[0012] As a further improvement of the present invention, the upper smoke inlet chamber forming the outer covering structure is arranged vertically, and the lower smoke inlet chamber is arranged to be inclined forward from its bottom to its top, so as to expand the smoke intake range of the side smoke inlet part in the front-to-back direction.

[0013] As a further improvement of the present invention, the two side portions of the upper smoke inlet chamber are gradually converged toward the middle from the top end to the bottom end, and the two side portions of the lower smoke inlet chamber are gradually converged toward the middle from the bottom end to the top end, so as to expand the smoke intake range of the side smoke inlet portion in the left and right directions.

[0014] As a further improvement of the present invention, the front side of the side smoke inlet cavity is tilted forward from the bottom to the top, forming a smoke guide plate for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet.

[0015] A range hood comprises the smoke collecting device and a fan device, wherein the fan device is connected to the top of the smoke collecting device.

[0016] Beneficial effects of the present invention: When the upper smoke inlet cavity of the smoke collecting device is in a closed state, smoking can be conducted through the upper normally open smoke inlet and the lower normally open smoke inlet, so that the smoke collecting device has a small smoke volume smoking performance; when the upper smoke inlet cavity of the smoke collecting device is in a closed state, smoking can be conducted through the upper normally open smoke inlet, the lower normally open smoke inlet, the upper hidden smoke inlet, the lower hidden smoke inlet and the side hidden smoke inlet, so that the smoke collecting device has a large smoke volume smoking performance, and because the upper smoke inlet cavity extends forward when it is in an open state, its smoking coverage is expanded. Therefore, when the user is cooking and the amount of oil smoke generated is small, the oil smoke can be sucked away without controlling the upper smoke inlet cavity to open, and when the amount of oil smoke generated is large, the upper smoke inlet cavity can be controlled to open, so that the number of smoke inlets can be increased and the smoking coverage can be expanded, thereby meeting the smoking requirements of large oil smoke volumes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein: Figure 1 A schematic diagram of the structure of the smoke collecting device in a state where the upper smoke inlet cavity is open and at a viewing angle; Figure 2 is a schematic structural diagram of the smoke collecting device in another viewing angle when the upper smoke inlet cavity is in an open state; Figure 3 It is a structural schematic diagram of the smoke collecting device when the upper smoke inlet chamber is in a closed state; Figure 4 A schematic diagram of smoking when the upper smoke inlet chamber of the smoke collecting device is in a closed state; Figure 5 A schematic diagram of smoking when the upper smoke inlet cavity of the smoke collecting device is in an open state; Figure 6 This is a schematic diagram of the structure of a range hood. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0020] Implementation Case 1: A smoke collecting device, referring to Figure 1-Figure 5, including a smoke collecting chamber 1, an upper smoke inlet chamber 2, a lower smoke inlet chamber 3, and two side smoke inlet chambers 4, wherein the top of the upper smoke inlet chamber 2 is rotatably connected to the upper front part of the smoke collecting chamber 1, the lower smoke inlet chamber 3 is fixed to the lower front part of the smoke collecting chamber 1, and the two side smoke inlet chambers 4 are respectively fixed to the two side parts of the front of the smoke collecting chamber 1, and the upper smoke inlet chamber 2, the lower smoke inlet chamber 3 and the two side smoke inlet chambers 4 are all connected with the smoke collecting chamber 1 in the air path, so that the upper smoke inlet chamber 2, the lower smoke inlet chamber 3 and the two side smoke inlet chambers 4 can suck the smoke into the smoke collecting chamber 1. The upper smoke inlet chamber 2 is set with a rotation range and has two extreme states, one of which is that the upper smoke inlet chamber 2 is retracted into the smoke collecting chamber 1, that is, the closed state of the upper smoke inlet chamber 2, and the other extreme position is that the upper smoke inlet chamber 2 extends toward the smoke collecting chamber 1, that is, the open state of the upper smoke inlet chamber 2. The rotation range of the upper smoke inlet chamber 2 is between the closed state and the open state.

[0021] When the upper smoke inlet chamber 2 is in a closed state, it is folded at the upper front portion of the smoke collecting chamber 1, while the lower smoke inlet chamber 3 is fixed at the lower front portion of the smoke collecting chamber 1, and the two side smoke inlet chambers 4 are fixed at the side front portions of the smoke collecting chamber 1, so that the smoke collecting device as a whole presents an upright flat structure, which is a typical ultra-thin range hood in terms of structural form.

[0022] The upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 are respectively provided with an upper normally open smoke inlet port 2a and a lower normally open smoke inlet port 3a, both of which are in an open state and can inhale oil smoke when the upper smoke inlet chamber 2 is in any rotation position, and the upper smoke inlet chamber 2, the upper smoke inlet chamber 2, and the side smoke inlet chamber 4 are respectively provided with an upper hidden smoke inlet port 2b, a lower hidden smoke inlet port 3b, and a side hidden smoke inlet port 4b, all of which are in a closed state and cannot inhale oil smoke when the upper smoke inlet chamber 2 is in a closed state, and are in an open state and can inhale oil smoke when the upper smoke inlet chamber 2 is in other rotation positions.

[0023] When the upper smoke inlet chamber 2 is in a closed state, the smoke collecting device can be smoked through the upper normally open smoke inlet port 2a and the lower normally open smoke inlet port 3a, so that the smoke collecting device has a small smoke volume smoking performance; when the upper smoke inlet chamber 2 is in a closed state, the smoke collecting device can be smoked through the upper normally open smoke inlet port 2a, the lower normally open smoke inlet port 3a, the upper hidden smoke inlet port 2b, the lower hidden smoke inlet port 3b and the side hidden smoke inlet port 4b, so that the smoke collecting device has a large smoke volume smoking performance, and because the upper smoke inlet chamber 2 is extended forward when it is in an open state, its smoking coverage is expanded. Therefore, when the user is cooking and the amount of oil smoke generated is small, the oil smoke can be sucked away without controlling the upper smoke inlet chamber 2 to open, and when the amount of oil smoke generated is large, the upper smoke inlet chamber 2 is controlled to open, which can increase the number of smoke inlets and expand the smoking coverage, thereby meeting the smoking requirements of large oil smoke volumes.

[0024] In this embodiment, when the upper smoke inlet chamber 2 is in a closed state, the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 protrude forward relative to the two side smoke inlet chambers 4, and the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 form a complete outer covering structure 5 that covers most of the front area of ​​the smoke collecting chamber 1. Since the upper smoke inlet chamber 2 forms a complete outer covering structure 5 with the lower smoke inlet chamber 3 when in a closed state, the smoke collecting device is divided into two parts, the smoke collecting chamber 1 and the outer covering structure 5 in this state, which not only improves the structural simplification of the smoke collecting device, but also can shield the partial structures of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3, thereby protecting the structure.

[0025] In the present embodiment, the upper normally-open smoke inlet port 2a is arranged on the two sides of the upper smoke inlet chamber 2, and the lower normally-open smoke inlet port 3a is arranged on the two sides of the lower smoke inlet chamber 3. Since the top of the upper smoke inlet chamber 2 is rotatably connected to the upper front part of the smoke collecting chamber 1, when the upper smoke inlet chamber 2 is rotated to any state within its rotation range, the lower normally-open smoke inlet ports 3a located on the two sides of the lower smoke inlet chamber 3 are always in an open state and can inhale oil smoke. When the upper smoke inlet chamber 2 is in a closed state, since it protrudes forward relative to the two side smoke inlet chambers 4, the protruding parts of the upper normally-open smoke inlet ports 2a on the two sides of the upper smoke inlet chamber 2 relative to the side smoke inlet chambers 4 are exposed. Therefore, the upper normally-open smoke inlet port 2a of the upper smoke inlet chamber 2 and the lower normally-open smoke inlet port 3a of the lower smoke inlet chamber 3 can be used for smoking when the upper smoke inlet chamber 2 is in an open state or a closed state. Moreover, when the upper smoke inlet chamber 2 is in a closed state, the upper normally open smoke inlet port 2a and the lower normally open smoke inlet port 3a form two side smoke inlet portions 5a located on both sides of the outer covering structure 5. When the upper smoke inlet chamber 2 is in a closed state, the fumes generated on the stove can be sucked into the smoke collecting chamber 1 from both sides of the outer covering structure 5 by the side smoke inlet portions 5a.

[0026] In this embodiment, the upper hidden smoke inlet 2b is arranged on the inner surface of the upper smoke inlet chamber 2, and is blocked by the front of the smoke collecting chamber 1 when the upper smoke inlet chamber 2 is in a closed state. The lower hidden smoke inlet 3b is arranged on the top of the lower smoke inlet chamber 3, and is blocked by the upper smoke inlet chamber 2 when the upper smoke inlet chamber 2 is in a closed state. Therefore, when the upper smoke inlet chamber 2 is in an open state, it extends forward relative to the smoke collecting chamber 1, and the bottom and two sides of the upper smoke inlet chamber 2 and the top and two sides of the lower smoke inlet chamber 3 can all suck in oil smoke, so that the smoke collecting device realizes a multi-dimensional smoke intake method, and the smoke inlet distribution area is more and the coverage area is larger, so that the smoke collecting chamber 1 has better smoking performance for a cooking environment with a large amount of oil smoke.

[0027] In this embodiment, for the specific setting of the upper hidden smoke inlet 2b, an opening 21 is provided on the inner surface of the upper smoke inlet chamber 2, and the opening 21 is formed close to and along the edge of the inner surface of the upper smoke inlet chamber 2. A negative pressure plate 22 is provided inside the upper smoke inlet chamber 2 at the corresponding opening 21, and there is a gap between the edge of the negative pressure plate 22 and the edge corresponding to the opening 21, and the gap has negative pressure and forms the upper hidden smoke inlet 2b. Since the negative pressure plate 22 is located in the upper smoke inlet chamber 2, the direction of the opening 21 of the gap between the edge of the negative pressure plate 22 and the edge corresponding to the opening 21 is defined, so that the space between the negative pressure plate 22 and the opening 21 forms a negative pressure space, and the coverage range of the negative pressure space is the range defined by the opening 21, so that the smoking range can be expanded, so that the smoking range basically covers the side area, and the negative pressure strength of the negative pressure space at the corresponding upper hidden smoke inlet 2b is the largest, that is, the smoking capacity at the edge of the negative pressure space is the strongest, and the escape of oil smoke is limited.

[0028] In this embodiment, when the upper smoke inlet chamber 2 is in the open state, the front of the smoke collection chamber 1 has a protruding lower smoke inlet chamber 3 at the bottom and protruding side smoke inlet chambers 4 at the two sides, the protrusion of the lower smoke inlet chamber 3 is greater than the two side smoke inlet chambers 4, and the part of the front of the smoke collection chamber 1 corresponding to the upper smoke inlet chamber 2 is recessed inward relative to the two side smoke inlet chambers 4. The side smoke inlet port is arranged on the inner side of the side smoke inlet chamber 4 facing the upper smoke inlet chamber 2, and when the upper smoke inlet chamber 2 is in the closed state, the two side parts of the upper smoke inlet chamber 2 are attached to the corresponding inner sides of the two side smoke inlet chambers 4, so that the upper smoke inlet chamber 2 is blocked by the side parts of the upper smoke inlet chamber 2 when it is in the closed state.

[0029] It should be noted that the upper smoke inlet chamber 2 extends toward the front side of the smoke collecting chamber 1 when in the open state, so that the smoke intake range of the upper smoke inlet chamber 2 is expanded toward the front side. At this time, since the side hidden smoke inlets 4b of the two side smoke inlet chambers 4 are in the open state and can inhale oil smoke and smoke, the two side hidden smoke inlets 4b are located on both sides of the upper front side of the smoke collecting hood, and their positions correspond to the positions of the upper normally open smoke inlet ports 2a when the upper smoke inlet chamber 2 is in the closed state, so that the side normally open smoke inlets can compensate for the smoking performance of the upper smoke inlet chamber 2 in the closed state.

[0030] In the present embodiment, the upper smoke inlet chamber 2 forming the outer covering structure 5 is arranged vertically, and the lower smoke inlet chamber 3 is arranged to be inclined forward from its bottom to its top, so that the outer covering structure 5 is arranged vertically from its top to the middle as a whole, and then inclined from front to rear at its bottom, thereby expanding the smoke intake range of the side smoke inlet portion 5a in the front-to-back direction.

[0031] In this embodiment, the two side portions of the upper smoke inlet chamber 2 are gradually converged toward the middle from the top end to the bottom end, and the two side portions of the lower smoke inlet chamber 3 are gradually converged toward the middle from the bottom end to the top end. Correspondingly, the side smoke inlet chamber 4 is gradually converged toward the middle from the top end to the middle, and then expands outwards item by item from the middle end to the bottom end. The structural arrangement of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 expands the smoke intake range of the side smoke inlet portion 5a of the outer covering structure 5 in the left and right directions.

[0032] The combination of the above two implementation cases can expand the smoke intake range of the two side smoke inlets 5a of the outer covering structure 5 in the front-to-back direction and the left-to-right direction. Therefore, the smoke collecting device has a better smoking range when the upper smoke inlet chamber 2 is in a closed state, thereby preventing oil smoke from escaping.

[0033] In the present embodiment, the front side smoke inlet chamber 4 is tilted forward from the bottom to the top. Due to its tilted setting, the oil smoke will contact this part during the upward floating process and slow down the speed of continuing to float. Under the negative pressure of the side smoke inlet section 5a, the oil smoke will flow laterally and be sucked into the side smoke inlet section 5a. The front side smoke inlet chamber 4 forms a smoke guide plate 4c for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet section 5a, thereby further improving the smoking capacity of the upper smoke inlet chamber 2 in the closed state and preventing the oil smoke from escaping.

[0034] Implementation Case 2: A range hood, referring to Figure 6 , including a smoke collecting device and a fan device 6, wherein the smoke collecting device is as shown in implementation case 1, the fan device 6 is connected to the top of the smoke collecting device, and a fan is arranged in the fan device 6. When the fan is started, a negative pressure is formed at the smoke inlet corresponding to the smoke collecting device, thereby sucking the oil smoke into the smoke collecting chamber 1, and then entering the fan device 6, and finally discharged from the smoke exhaust pipe (not shown in the figure).

[0035] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A smoke collecting device, characterized in that: It comprises a smoke collecting chamber (1), an upper smoke inlet chamber (2) rotatably connected at the top to the upper front part of the smoke collecting chamber (1), a lower smoke inlet chamber (3) fixed to the lower front part of the smoke collecting chamber (1), and two side smoke inlet chambers (4) respectively fixed to two side parts of the front part of the smoke collecting chamber (1), wherein the rotation range of the upper smoke inlet chamber (2) is limited between a closed state in which it is retracted into the smoke collecting chamber (1) and an open state in which it is extended toward the front side of the smoke collecting chamber (1); The upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) are respectively provided with an upper normally open smoke inlet port (2a) and a lower normally open smoke inlet port (3a), both of which are in an open state and can inhale oil smoke when the upper smoke inlet chamber (2) is in any rotation position; The upper smoke inlet chamber (2), the lower smoke inlet chamber (3), and the side smoke inlet chamber (4) are respectively provided with an upper hidden smoke inlet port (2b), a lower hidden smoke inlet port (3b), and a side hidden smoke inlet port (4b); the three are in a closed state when the upper smoke inlet chamber (2) is in a closed state and cannot inhale oil smoke, and are in an open state when the upper smoke inlet chamber (2) is in other rotation positions and can inhale oil smoke.

2. The smoke collecting device according to claim 1, characterized in that: When the upper smoke inlet chamber (2) is in a closed state, the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) protrude forward relative to the two side smoke inlet chambers (4), and the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) form a complete outer covering structure (5) that covers most of the front area of ​​the smoke collecting chamber (1).

3. The smoke collecting device according to claim 2, characterized in that: The upper normally open smoke inlet (2a) is arranged on two side portions of the upper smoke inlet chamber (2), and the lower normally open smoke inlet (3a) is arranged on two side portions of the lower smoke inlet chamber (3); when the upper smoke inlet chamber (2) is in a closed state, a portion of the upper normally open smoke inlet (2a) protruding relative to the side smoke inlet chamber (4) is exposed, and forms two side smoke inlet portions (5a) located on both sides of the outer covering structure (5) with the lower normally open smoke inlet (3a).

4. The smoke collecting device according to claim 3, characterized in that: The upper hidden smoke inlet (2b) is arranged on the inner surface of the upper smoke inlet chamber (2), and is blocked by the front side of the smoke collecting chamber (1) when the upper smoke inlet chamber (2) is in a closed state; the lower hidden smoke inlet (3b) is arranged on the top of the lower smoke inlet chamber (3), and is blocked by the upper smoke inlet chamber (2) when the upper smoke inlet chamber (2) is in a closed state.

5. The smoke collecting device according to claim 4, characterized in that: An opening (21) is provided on the inner surface of the upper smoke inlet chamber (2), a negative pressure plate (22) is provided inside the upper smoke inlet chamber (2) at a position corresponding to the opening (21), and a gap is provided between the edge of the negative pressure plate (22) and the edge corresponding to the opening (21), and the gap forms the upper hidden smoke inlet port (2b).

6. The smoke collecting device according to claim 3, characterized in that: The side hidden smoke inlet (4b) is arranged on the inner side of the side smoke inlet cavity (4) facing the upper smoke inlet cavity (2), and is shielded by the side of the upper smoke inlet cavity (2) when the upper smoke inlet cavity (2) is in a closed state.

7. The smoke collecting device according to claim 3, characterized in that: The upper smoke inlet chamber (2) forming the outer covering structure (5) is arranged vertically, and the lower smoke inlet chamber (3) is arranged to be inclined forward from its bottom to its top, so as to expand the smoke inlet range of the side smoke inlet portion (5a) in the front-rear direction.

8. The smoke collecting device according to claim 3, characterized in that: The two side portions of the upper smoke inlet chamber (2) are gradually converged toward the middle from the top end to the bottom end, and the two side portions of the lower smoke inlet chamber (3) are gradually converged toward the middle from the bottom end to the top end, so as to expand the smoke intake range of the side smoke inlet portion (5a) in the left-right direction.

9. The smoke collecting device according to claim 3, characterized in that: The front side of the side smoke inlet chamber (4) is tilted forward from the bottom to the top, forming a smoke guide plate (4c) for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet portion (5a).

10. A range hood, characterized in that: It comprises the smoke collecting device according to any one of claims 1 to 9, and a fan device (6), wherein the fan device (6) is connected to the top of the smoke collecting device.

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