Smoke collecting device and range hood

Abstract

The invention discloses a smoke collecting device which comprises a smoke collecting cavity, an upper smoke inlet cavity with the top rotationally connected to the upper portion of a front plate of the smoke collecting cavity and a lower smoke inlet cavity fixed to the lower portion of the front plate of the smoke collecting cavity, and the rotation range of the upper smoke inlet cavity is limited between the closed state that the upper smoke inlet cavity is folded in the smoke collecting cavity and the open state that the upper smoke inlet cavity stretches out towards the front side of the smoke collecting cavity; 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 when the upper smoke inlet cavity is located at any rotating position. The upper smoke inlet cavity is provided with an upper hidden smoke inlet and a lower hidden smoke inlet, the upper hidden smoke inlet and the lower hidden smoke inlet are in a closed state when the upper smoke inlet cavity is in a closed state, and the upper hidden smoke inlet and the lower hidden smoke inlet are in an open state when the upper smoke inlet cavity is in other rotating positions. The invention further discloses the range hood. The range hood has the beneficial effects that the range hood is large in smoking coverage range and 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 technical problem to be solved by the present invention is to provide a smoke collecting device and a range hood, which have low smoke volume smoking performance 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, comprising: a smoke collecting chamber, an upper smoke inlet chamber whose top is rotatably connected to the upper part of the front plate of the smoke collecting chamber and communicated with the air path thereof, and a lower smoke inlet chamber fixed to the lower part of the front plate of the smoke collecting chamber and communicated with the air path thereof, 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 toward the front side of the smoke collecting chamber; The upper smoke inlet chamber and the lower smoke inlet chamber 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 chamber is in any rotation position; The upper smoke inlet chamber and the lower smoke inlet chamber are respectively provided with an upper hidden smoke inlet port and a lower hidden smoke inlet port, both of 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 form a complete outer covering structure that at least covers most of the area of ​​the front plate 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 upper normally-open smoke inlet and the lower normally-open smoke inlet form two side smoke inlet portions located on both sides of the outer covering structure.

[0009] As a further improvement of the present invention, the front plate of the smoke collecting chamber is inclined forward from its bottom edge to its top edge, and the lower smoke inlet chamber is inclined forward from its bottom to its top. The upper smoke inlet chamber forming the outer covering structure is arranged vertically to expand the smoke intake range of the side smoke inlet part in the front and rear directions.

[0010] 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.

[0011] As a further improvement of the present invention, the front plate of the smoke collecting chamber has portions on both sides exposed outside the coverage of the outer covering structure, and the portions form smoke guide plates for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet portion.

[0012] As a further improvement of the present invention, the upper normally open smoke inlet is extended along the length direction of the side of the upper smoke inlet cavity, and the lower normally open smoke inlet is extended along the length direction of the side of the lower smoke inlet cavity.

[0013] As a further improvement of the present invention, the front plate of the smoke collecting chamber has a cavity opening corresponding to the upper smoke inlet chamber and matching its shape, the smoke collecting chamber is movably connected to a cover panel that blocks the cavity opening, and can be pushed into the smoke collecting chamber by the upper smoke inlet chamber during the rotation of the upper smoke inlet chamber to a closed state, and the cover panel is provided with an elastic reset member for applying elastic force to the cover panel to reset it when it is not pushed by the upper smoke inlet chamber.

[0014] As a further improvement of the present invention, the bottom edge of the cover panel is rotatably connected to the bottom edge of the corresponding cavity opening of the front panel, so that the cover panel is flipped into the smoke collecting cavity when pushed by the upper smoke inlet cavity.

[0015] As a further improvement of the present invention, the front side of the covering panel has a plurality of raised structures formed by protrusions and extending linearly, and the raised structures are arranged at intervals in the left and right directions to block the oil smoke on the covering panel in the lateral direction to reduce its lateral diffusion speed.

[0016] As a further improvement of the present invention, the front side of the cover panel has a concave structure between any two adjacent convex structures and extending in a linear manner, which is used to extend the lateral flow distance of the oil smoke on the cover panel and to form a converging channel for oil droplets when the cover panel is pushed into the smoke collecting chamber by the upper smoke inlet chamber.

[0017] As a further improvement of the present invention, the upper hidden smoke inlet is arranged on the inner surface of the upper smoke inlet chamber, and is blocked by the front panel of the smoke collecting chamber when the upper smoke inlet chamber is in a closed state; the lower hidden smoke inlet is arranged at the top of the lower smoke inlet chamber, and is blocked by the upper smoke inlet chamber when the upper smoke inlet chamber is in a closed state.

[0018] 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.

[0019] Beneficial effects of the present invention: When the upper smoke inlet cavity is in an open state, the smoke collecting device can be smoked 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 is in a closed state, the smoke collecting device can be smoked through the upper normally open smoke inlet, the lower normally open smoke inlet, the upper hidden smoke inlet, and the lower 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 also 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, controlling the upper smoke inlet cavity to open can increase the number of smoke inlets and expand the smoking coverage, thereby meeting the smoking requirements of large oil smoke volumes. Therefore, the smoke collecting device of this embodiment can adapt to diversified cooking scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 It is a structural schematic diagram of a smoke collecting device; Figure 2 A three-dimensional schematic diagram of the smoke collecting device in the upper smoke inlet cavity being in an open state; Figure 3 A three-dimensional schematic diagram of the smoke collecting device in a closed state of the upper smoke inlet chamber; Figure 4 is a side view schematic diagram of the smoke collecting device in the upper smoke inlet chamber being in an open state; Figure 5 is a side view schematic diagram of the smoke collecting device in a closed state of the upper smoke inlet chamber; Figure 6 A schematic diagram of smoking with the smoke collecting device in the upper smoke inlet cavity being in an open state; Figure 7 A schematic diagram of smoking with the smoke collecting device in a closed state with the upper smoke inlet chamber; Figure 8 is a schematic diagram of the outer covering structure; Fig. 9 A schematic diagram of the upper smoke inlet cavity, the front plate and the cover plate at a viewing angle; Fig.10 is a schematic diagram of the upper smoke inlet cavity, the front plate and the covering plate from another perspective; Fig.11 is a schematic diagram of a rotating assembly; Fig.12 A schematic diagram of the cover panel being pushed into the smoke collecting chamber during the rotation of the upper smoke inlet chamber; Fig.13 It is a schematic diagram of a cover plate with a convex structure and a concave structure and an upper smoke inlet cavity; Fig.14 is a schematic diagram of the structure of the covering panel; Fig.15 A schematic diagram of the cladding panel blocking the lateral diffusion of oil smoke; Fig.16 It is a structural schematic diagram of the upper smoke inlet chamber; Fig.17 This is a schematic diagram of a range hood. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0022] 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.

[0023] Implementation Case 1: A smoke collecting device, referring to Figure 1-Figure 16, including a smoke collecting chamber 1, an upper smoke inlet chamber 2, and a lower smoke inlet chamber 3, wherein the top of the upper smoke inlet chamber 2 is rotatably connected to the upper part of the front plate 11 of the smoke collecting chamber 1 and communicated with its air path, and the lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 of the smoke collecting chamber 1 and communicated with its air path, and both the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 can suck the smoke and flow it 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 in 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, and the rotation range of the upper smoke inlet chamber 2 is between the closed state and the open state.

[0024] When the upper smoke inlet chamber 2 is in a closed state, it is folded in the upper part of the front plate 11 of the smoke collecting chamber 1, and the lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 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.

[0025] 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 and the upper smoke inlet chamber 2 are respectively provided with an upper hidden smoke inlet port 2b and a lower hidden smoke inlet port 3b, both 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.

[0026] When the upper smoke inlet chamber 2 is in an open 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, and the lower hidden smoke inlet port 3b, 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 also 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.

[0027] 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 form a complete outer covering structure 4 that at least covers most of the area of ​​the front plate 11 of the smoke collecting chamber 1. The smoke collecting device is actually divided into three parts in terms of structural composition, namely, the smoke collecting chamber 1, the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3. Since the upper smoke inlet chamber 2 forms a complete outer covering structure 4 with the lower smoke inlet chamber 3 when in a closed state, the smoke collecting device is divided into two parts, namely, the smoke collecting chamber 1 and the outer covering structure 4 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.

[0028] In the present embodiment, the upper normally-open smoke inlet 2a is arranged on the two sides of the upper smoke inlet chamber 2, and the lower normally-open smoke inlet 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 part of the front plate 11 of the smoke collecting chamber 1, when the upper smoke inlet chamber 2 is rotated to any state within its rotation range, the upper normally-open smoke inlet 2a located on the two sides of the upper smoke inlet chamber 2 and the lower normally-open smoke inlet 3a located on the two sides of the lower smoke inlet chamber 3 are always in the open state, so that both can be used for smoking when the upper smoke inlet chamber 2 is in the open state or the 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 4a located on both sides of the outer covering structure 4. 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 4 by the side smoke inlet portions 4a.

[0029] In the present embodiment, the lower smoke inlet chamber 3 is provided with lower normally open smoke inlet ports 3a on both sides, and is in an open state when the upper smoke inlet chamber 2 is in a closed state or an open state, so that the lower smoke inlet chamber 3 alone has the performance of absorbing oil fumes. Compared with the prior art in which only the active part corresponding to the upper smoke inlet chamber 2 can smoke, the smoking area of ​​the smoke collection device in the present embodiment is more distributed and has a more excellent smoking performance.

[0030] In the present embodiment, the front plate 11 of the smoke collecting chamber 1 is inclined forward from its bottom edge to its top edge, and the lower smoke inlet chamber 3 is inclined forward from its bottom to its top, so that the upper smoke inlet chamber 2 of the outer covering structure 4 is arranged vertically, that is, the outer covering structure 4 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 4a 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, thereby expanding the smoke intake range of the side smoke inlet portion 4a 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 4a of the outer covering structure 4 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 plate 11 of the smoke collecting chamber 1 has portions on both sides exposed outside the coverage of the outer covering structure 4, which portions are close to the side smoke inlet portion 4a of the outer covering structure 4, and due to the inclined setting of the front plate 11 of the smoke collecting chamber 1, the oil smoke will contact this portion during the process of floating upward and slow down the speed of continuing to float upward, and under the negative pressure of the side smoke inlet portion 4a, the oil smoke will flow laterally and be sucked into the side smoke inlet portion 4a. Therefore, the portion of the front plate 11 exposed outside the coverage of the outer covering structure 4 forms a smoke guide plate for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet portion 4a, 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] In this embodiment, the upper normally-open smoke inlet 2a is extended along the length direction of the side of the upper smoke inlet chamber 2, and the lower normally-open smoke inlet 3a is extended along the length direction of the side of the lower smoke inlet chamber 3, which can maximize the upper normally-open smoke inlet 2a and the lower normally-open smoke inlet 3a and improve the smoking capacity of both.

[0035] In the present embodiment, since the front plate 11 of the smoke collecting chamber 1 is tilted forward from bottom to top, the bottom of the lower smoke inlet chamber 3 is relatively far back in space to avoid collision with cookware. Therefore, the thickness of the lower smoke inlet chamber 3 protruding from the front plate 11 of the smoke collecting chamber 1 gradually increases from its bottom to the top, so that the width of the two sides of the lower smoke inlet chamber 3 gradually increases from the bottom to the top, and the width of the lower normally open smoke inlet port 3a gradually increases from its bottom to its top, thereby increasing the area of ​​the lower normally open smoke inlet port 3a and improving its smoking capacity.

[0036] In the present embodiment, the front plate 11 of the smoke collecting chamber 1 has a cavity opening corresponding to the upper smoke inlet chamber 2 and matching its shape. The cavity opening can be specifically a hollow structure, a sunken platform structure, or other structures that can form an opening. Since the upper smoke inlet chamber 2 is gradually gathered toward the middle from top to bottom, the upper smoke inlet chamber 2 presents a trapezoidal structure. Correspondingly, the cavity opening of the front plate 11 also presents a trapezoidal structure. The smoke collecting chamber 1 is movably connected with a cover panel 12 that blocks the cavity opening, and can be pushed into the smoke collecting chamber 1 by the upper smoke inlet chamber 2 during the rotation of the upper smoke inlet chamber 2 to the closed state. The cover panel 12 is provided with an elastic reset member 135, which is used to apply elastic force to the cover panel 12 to reset it when it is not pushed by the upper smoke inlet chamber 2. On the one hand, the cover panel 12 is movably connected to the smoke collecting chamber 1, and can be pushed into the smoke collecting chamber 1 by the upper smoke inlet chamber 2 during the rotation of the upper smoke inlet chamber 2 to the closed state, so that the upper smoke inlet chamber 2 avoids interference with the front plate 11 of the smoke collecting chamber 1 when it is in the closed state, and can make the front and rear widths of the smoke collecting device smaller, that is, make the smoke collecting device more ultra-thin; on the other hand, since the cover panel 12 can be pushed into the smoke collecting chamber 1 by the upper smoke inlet chamber 2, the thickness limit of the upper smoke inlet chamber 2 is lower, that is, the width limit of the two sides of the upper smoke inlet chamber 2 is lower, so that the width of the two upper normally open smoke inlet ports 2a of the upper smoke inlet chamber 2 can be maximized to improve its smoking capacity.

[0037] In the present embodiment, the bottom edge of the cover panel 12 is rotatably connected to the bottom edge of the corresponding cavity of the front panel 11, so that when the cover panel 12 is pushed by the upper smoke inlet cavity 2, the cover panel 12 is turned into the smoke collecting cavity 1 with its bottom edge as the rotation axis. When the upper smoke inlet cavity 2 is in a closed state, the cover panel 12 is located in the smoke collecting cavity 1, and the cover panel 12 is tilted backward from the bottom edge to the top edge. It should be noted that when the upper smoke inlet cavity 2 is in an open state, the oil smoke will contact the cover panel 12 to form oil droplets on the cover panel 12. When the user finishes cooking and the upper smoke inlet cavity 2 is rotated to a closed state, the cover panel 12 is pushed into the smoke collecting cavity 1 and is tilted, so that the oil droplets on the cover panel 12 will flow downward along the front of the cover panel 12 and drip into the smoke collecting cavity 1, thereby reducing the oil stains formed on the cover panel 12.

[0038] In this embodiment, the cover panel 12 and the front panel 11 are rotatably connected by at least one rotating assembly, and the number of rotating assemblies needs to be reasonably set according to the actual width of the cover panel 12. The rotating assembly includes a rotating shaft 133, a first connecting piece 131 connected to the cover panel 12, and a second connecting piece 132 connected to the front panel 11, and the first connecting piece 131 and the second connecting piece 132 each have at least one sleeve structure 134 sleeved on the rotating shaft 133. The elastic reset member 135 is configured as a torsion spring, which is sleeved on the rotating shaft 133 and its two ends act on the first connecting piece 131 and the second connecting piece 132 respectively. By combining the elastic reset member 135 with the rotating structure, the structure is simplified and occupies less space.

[0039] In this embodiment, the cover panel 12 is located on the rear side of the front panel 11, and when the cover panel 12 does not contact the upper smoke inlet chamber 2, the elastic force applied by the elastic reset member 135 to the cover panel 12 causes the edge of the cover panel 12 to be pressed against the back side of the front panel 11, thereby avoiding the formation of a gap between the cover panel 12 and the edge of the cavity opening.

[0040] In this embodiment, the front of the cover plate 12 has a plurality of convex structures 121 extending in a linear shape, and the convex structures 121 are arranged at intervals in the left and right directions. When the upper smoke inlet chamber 2 is in an open state, the oil smoke floating upward onto the cover plate 12 will be resisted by the convex structures 121, thereby reducing the lateral diffusion speed of the oil smoke to the left and right sides, making the oil smoke more concentrated in the middle area, and preventing the oil smoke from escaping from both sides.

[0041] In the present embodiment, the front side of the covering panel 12 has a recessed structure 122 between any two adjacent raised structures 121, which is recessed and extends linearly. The provision of the recessed structure 122 can extend the lateral flow distance of the oil smoke on the covering panel 12, thereby further slowing down its lateral diffusion speed to prevent the oil smoke from escaping from both sides. In addition, when the covering panel 12 is pushed into the smoke collecting chamber 1 by the upper smoke inlet chamber 2, the oil droplets formed on the covering panel 12 can be gathered on the recessed structure 122 and flow from top to bottom along the recessed structure 122, so that the recessed structure 122 can serve as a confluence channel for the oil droplets, thereby improving the speed and efficiency of discharging the oil droplets on the covering panel 12.

[0042] In this embodiment, the raised structure 121 gradually raises from both sides to the middle to the highest point, and forms an arc-shaped transition at the highest point. The recessed structure 122 gradually recesses from both sides to the middle to the lowest point, and forms an arc-shaped transition at the lowest point. The arc-shaped transition setting of the raised structure 121 and the recessed structure 122 can avoid the formation of corners on the cover panel 12 and the formation of dirt that is difficult to clean at the corners.

[0043] 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 plate 11 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.

[0044] In this embodiment, the two side ends of the lower hidden smoke inlet 3b are connected to the top ends of the corresponding two lower normally open smoke inlets 3a, so that the smoking coverage of the lower smoke inlet cavity 3 is maximized.

[0045] In the present embodiment, an upper panel 51 is arranged on the outer surface of the upper smoke inlet chamber 2, and both side edges of the upper panel 51 extend beyond a portion of the two side portions of the upper smoke inlet chamber 2; a lower panel 52 is arranged on the outer surface of the lower smoke inlet chamber 3, and both side edges of the lower panel 52 extend beyond a portion of the two side portions of the lower smoke inlet chamber 3, so that both sides of the upper panel 51 can cover the upper normally open smoke inlet port 2a on the two side portions of the upper smoke inlet chamber 2, and both sides of the lower panel 52 can cover the lower normally open smoke inlet port 3a on the two side portions of the lower smoke inlet chamber 3, which can not only prevent the upper normally open smoke inlet port 2a and the lower normally open smoke inlet port 3a from being easily contaminated with dirt, but also can avoid the unsightly appearance caused by the upper normally open smoke inlet port 2a and the lower normally open smoke inlet port 3a being exposed when facing the smoke collecting device.

[0046] In the present embodiment, the bottom edge of the upper panel 51 exceeds a portion of the bottom of the upper smoke inlet chamber 2, and the top edge of the lower panel 52 exceeds a portion of the top of the lower smoke inlet chamber 3; when the upper smoke inlet chamber 2 is in a closed state, the bottom edge of the upper panel 51 is located in front of the top edge of the lower panel 52 and blocks it, and blocks the lower hidden smoke inlet port 3b on the top of the lower smoke inlet chamber 3, thereby preventing the lower hidden smoke inlet port 3b from getting dirty.

[0047] Implementation Case 2: A range hood, referring to Fig.17 , 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).

[0048] 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: include: A smoke collecting chamber (1), an upper smoke inlet chamber (2) rotatably connected at the top to the upper part of a front plate (11) of the smoke collecting chamber (1) and in communication with an air path thereof, and a lower smoke inlet chamber (3) fixed to the lower part of the front plate (11) of the smoke collecting chamber (1) and in communication with an air path thereof, wherein the rotation range of the upper smoke inlet chamber (2) is limited between a closed state in which the upper smoke inlet chamber (2) is retracted into the smoke collecting chamber (1) and an open state in which the upper smoke inlet chamber (2) 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 rotational position; The upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) are respectively provided with an upper hidden smoke inlet port (2b) and a lower hidden smoke inlet port (3b), both of which 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) form a complete outer covering structure (4) that at least covers most of the area of ​​the front plate (11) 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 at two side portions of the upper smoke inlet chamber (2), and the lower normally open smoke inlet (3a) is arranged at two side portions of the lower smoke inlet chamber (3); when the upper smoke inlet chamber (2) is in a closed state, the upper normally open smoke inlet (2a) and the lower normally open smoke inlet (3a) form two side smoke inlet portions (4a) located at two sides of the outer covering structure (4).

4. The smoke collecting device according to claim 3, characterized in that: The front plate (11) of the smoke collecting chamber (1) is inclined forward from its bottom edge to its top edge, and the lower smoke inlet chamber (3) is arranged to be inclined forward from its bottom edge to its top edge, so that the upper smoke inlet chamber (2) forming the outer covering structure (4) is arranged vertically to expand the smoke inlet range of the side smoke inlet portion (4a) in the front-to-back direction.

5. The smoke collecting device according to claim 4, 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 (4a) in the left-right direction.

6. The smoke collecting device according to claim 5, characterized in that: Both sides of the front plate (11) of the smoke collecting chamber (1) have portions exposed outside the coverage of the outer covering structure (4), and the portions form smoke guide plates for increasing the rising resistance of oil smoke and guiding the oil smoke to the side smoke inlet portion (4a).

7. The smoke collecting device according to claim 3, characterized in that: The upper normally open smoke inlet (2a) is extended along the length direction of the side of the upper smoke inlet chamber (2), and the lower normally open smoke inlet (3a) is extended along the length direction of the side of the lower smoke inlet chamber (3).

8. The smoke collecting device according to claim 1, characterized in that: The front plate (11) of the smoke collecting chamber (1) has a cavity opening corresponding to the upper smoke inlet chamber (2) and matching its shape; the smoke collecting chamber (1) is movably connected to a cover plate (12) that blocks the cavity opening, and can be pushed into the smoke collecting chamber (1) by the upper smoke inlet chamber (2) during the process of the upper smoke inlet chamber (2) rotating toward a closed state; the cover plate (12) is provided with an elastic reset member (135) for applying elastic force to the cover plate (12) to reset it when it is not pushed by the upper smoke inlet chamber (2).

9. The smoke collecting device according to claim 8, characterized in that: The bottom edge of the cover panel (12) is rotatably connected to the bottom edge of the corresponding cavity opening of the front panel (11), so that the cover panel (12) is turned over into the smoke collecting cavity (1) when pushed by the upper smoke inlet cavity (2).

10. The smoke collecting device according to claim 8, characterized in that: The front surface of the covering panel (12) has a plurality of convex structures (121) formed in a linear manner, and the convex structures (121) are arranged at intervals in the left-right direction and are used to block the oil smoke on the covering panel (12) in the lateral direction to reduce its lateral diffusion speed.

11. The smoke collecting device according to claim 10, characterized in that: The front surface of the cover plate (12) has a concave structure (122) between any two adjacent convex structures (121) and extending in a linear shape, which is used to extend the lateral flow distance of the oil smoke on the cover plate (12) and to form a converging channel for oil droplets when the cover plate (12) is pushed into the smoke collecting chamber (1) by the upper smoke inlet chamber (2).

12. 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 shielded by the front plate (11) 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 shielded by the upper smoke inlet chamber (2) when the upper smoke inlet chamber (2) is in a closed state.

13. A range hood, characterized in that: It comprises the smoke collecting device according to any one of claims 1 to 12, and a fan device (6), wherein the fan device (6) is connected to the top of the smoke collecting device.

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