A smoke collection device and an oil fume machine

Abstract

The present invention discloses a smoke collection device, comprising: a smoke collection cavity, an upper smoke inlet cavity rotatably connected to the upper part of the front plate of the smoke collection cavity at the top, and a lower smoke inlet cavity fixed to the lower part of the front plate of the smoke collection cavity. The rotation range of the upper smoke inlet cavity is limited between its closed state where it is retracted into the smoke collection cavity and its open state where it extends forward of the smoke collection cavity; 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, and both are in an open state when the upper smoke inlet cavity is in any rotational position; the upper smoke inlet cavity and the upper smoke inlet cavity are respectively provided with an upper hidden smoke inlet and a lower hidden smoke inlet, and both are in a closed state when the upper smoke inlet cavity is in the closed state and are in an open state when the upper smoke inlet cavity is in other rotational positions. The present invention also discloses a range hood. The beneficial effect of the present invention is that the smoking coverage range is relatively large, and it can adapt to diversified cooking scenarios.

Description

Technical Field

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

[0002] The ultra-thin range hood is a modern kitchen appliance, mainly used for sucking and exhausting the oil fumes and odors generated during the cooking process. Compared with the traditional range hood, the ultra-thin range hood is favored for its thin design and high efficiency. Especially for the smoke collecting device of the ultra-thin range hood, it has a thinner thickness and a relatively simple structure, saving space and being 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, resulting in a smaller smoking coverage area, certain limitations in its smoking performance, and poor adaptability to diverse cooking scenarios. 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 the smoking performance for small and large amounts of oil fumes, a relatively large smoking coverage area, and can adapt to diversified cooking scenarios.

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

[0006] A smoke collecting device, comprising: a smoke collecting cavity, an upper smoke inlet cavity rotatably connected to the upper part of the front plate of the smoke collecting cavity and in gas communication therewith, and a lower smoke inlet cavity fixed to the lower part of the front plate of the smoke collecting cavity and in gas communication therewith. The rotation range of the upper smoke inlet cavity is limited between its closed state where it is retracted into the smoke collecting cavity and its open state where it extends forward of the smoke collecting cavity;

[0007] 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 fumes when the upper smoke inlet cavity is in any rotational position;

[0008] The upper smoke inlet cavity and the lower smoke inlet cavity are respectively provided with an upper hidden smoke inlet and a lower hidden smoke inlet, both of which are in a closed state and cannot inhale oil fumes when the upper smoke inlet cavity is in the closed state, and are in an open state and can inhale oil fumes when the upper smoke inlet cavity is in other rotational positions.

[0009] As a further improvement of the present invention, when the upper smoke inlet cavity is in the closed state, the upper smoke inlet cavity and the lower smoke inlet cavity form a complete outer covering structure that at least covers most of the area of the front plate of the smoke collecting cavity.

[0010] 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 inlets located on both sides of the outer covering structure.

[0011] As a further improvement of the present invention, the front plate of the smoke collecting cavity is inclined forward from its bottom edge to its top edge, and the lower smoke inlet cavity is inclined forward from its bottom to its top. The upper smoke inlet cavity of the outer covering structure is arranged vertically, so as to expand the smoke inlet range of the side smoke inlets in the front-rear direction.

[0012] As a further improvement of the present invention, the two sides of the upper smoke inlet cavity are formed by gradually converging from the top end to the bottom end towards the middle, and the two sides of the lower smoke inlet cavity are formed by gradually converging from the bottom end to the top end towards the middle, so as to expand the smoke inlet range of the side smoke inlets in the left-right direction.

[0013] As a further improvement of the present invention, both sides of the front plate of the smoke collecting cavity have parts exposed outside the coverage of the outer covering structure, and these parts form smoke guiding plates for increasing the rising resistance of the oil fume and guiding the oil fume to the side smoke inlets.

[0014] As a further improvement of the present invention, the upper normally open smoke inlet extends along the length direction of the side of the upper smoke inlet cavity, and the lower normally open smoke inlet extends along the length direction of the side of the lower smoke inlet cavity.

[0015] As a further improvement of the present invention, the front plate of the smoke collecting cavity has an orifice corresponding to and matching the shape of the upper smoke inlet cavity. The smoke collecting cavity is movably connected with a covering panel that blocks the orifice, 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. The covering panel is provided with an elastic reset member for applying an elastic force to the covering panel to reset it when it is not pushed by the upper smoke inlet cavity.

[0016] As a further improvement of the present invention, the bottom edge of the covering panel is rotatably connected to the bottom edge of the front plate corresponding to the orifice, so that the covering panel flips into the smoke collecting cavity when it is pushed by the upper smoke inlet cavity.

[0017] As a further improvement of the present invention, the front surface of the covering panel has a raised structure formed by a plurality of raised parts and extending linearly. The raised structures are arranged at intervals in the left-right direction, so as to block the oil fume on the covering panel laterally to reduce its lateral diffusion speed.

[0018] As a further improvement of the present invention, the front surface of the cladding panel has a recessed structure formed between any two adjacent raised structures and extending linearly, which is used to extend the lateral flow path of the cooking fumes on the cladding panel and form a confluence channel for the oil droplets when the cladding panel is pushed into the smoke collecting cavity by the upper smoke inlet cavity.

[0019] 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 plate of the smoke collecting cavity when the upper smoke inlet cavity is in the 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 the closed state.

[0020] An oil fume extractor includes the smoke collecting device and the fan device, and the fan device is connected to the top of the smoke collecting device.

[0021] Advantages of the present invention:

[0022] When the upper smoke inlet cavity is in the open state, the smoke collecting device can smoke through the upper normally open smoke inlet and the lower normally open smoke inlet, so that the smoke collecting device has the performance of smoking a small amount of fumes; when the upper smoke inlet cavity is in the closed state, the smoke collecting device can smoke 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 the performance of smoking a large amount of fumes, and since the upper smoke inlet cavity extends forward when it is in the open state, its smoking coverage range is also expanded. Therefore, when the user is cooking and the amount of cooking fumes generated is small, the fumes can be sucked away without controlling the opening of the upper smoke inlet cavity, and when the amount of cooking fumes generated is large, controlling the opening of the upper smoke inlet cavity can increase the number of smoke inlets and expand the smoking coverage range, so as to meet the smoking requirements for a large amount of fumes. Therefore, the smoke collecting device in this embodiment can adapt to diversified cooking scenarios. Description of the Drawings

[0023] The following will describe in detail the preferred embodiments of the present invention through the drawings to help understand the purpose and advantages of the present invention, where:

[0024] Figure 1 is a schematic structural diagram of the smoke collecting device;

[0025] Figure 2 is a three-dimensional schematic diagram of the smoke collecting device when the upper smoke inlet cavity is in the open state;

[0026] Figure 3 is a three-dimensional schematic diagram of the smoke collecting device when the upper smoke inlet cavity is in the closed state;

[0027] Figure 4 is a side view schematic diagram of the smoke collecting device when the upper smoke inlet cavity is in the open state;

[0028] Figure 5 Schematic side view of the smoke collection device with the upper smoke inlet cavity in the closed state;

[0029] Figure 6 Smoking schematic of the smoke collection device with the upper smoke inlet cavity in the open state;

[0030] Figure 7 Smoking schematic of the smoke collection device with the upper smoke inlet cavity in the closed state;

[0031] Figure 8 Schematic of the outer covering structure;

[0032] Figure 9 Schematic of the upper smoke inlet cavity, the front plate, and the covering panel from one perspective;

[0033] Figure 10 Schematic of the upper smoke inlet cavity, the front plate, and the covering panel from another perspective;

[0034] Figure 11 Schematic of the rotating component;

[0035] Figure 12 Schematic of the covering panel being pushed into the smoke collection cavity during the rotation of the upper smoke inlet cavity;

[0036] Figure 13 Schematic of the covering panel with raised and recessed structures and the upper smoke inlet cavity;

[0037] Figure 14 Schematic of the structure of the covering panel;

[0038] Figure 15 Schematic of the covering panel blocking the lateral diffusion of oil fume;

[0039] Figure 16 Schematic of the structure of the upper smoke inlet cavity;

[0040] Figure 17 Schematic of the range hood. Detailed implementation mode

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, and bottom, which are mentioned or may be mentioned, are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0043] Embodiment 1:

[0044] A smoke collecting device, referring to Figures 1-16 , includes a smoke collecting chamber 1, an upper smoke inlet chamber 2, and a lower smoke inlet chamber 3. Among them, 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 is in gas communication with it. The lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 of the smoke collecting chamber 1 and is in gas communication with it. Both the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 can suck in oil fume 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 extreme state is that the upper smoke inlet chamber 2 is retracted into the smoke collecting chamber 1, which is the closed state of the upper smoke inlet chamber 2. The other extreme position is that the upper smoke inlet chamber 2 extends towards the smoke collecting chamber 1, which 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.

[0045] When the upper smoke inlet chamber 2 is in the closed state, it is retracted into the upper part of the front plate 11 of the smoke collecting chamber 1, while the lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 of the smoke collecting chamber 1, making the smoke collecting device present an upright flat structure as a whole, and belonging to a typical ultra-thin range hood in terms of structural form.

[0046] The upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 are respectively provided with an upper normally open smoke inlet 2a and a lower normally open smoke inlet 3a. Both are in the open state and can suck in oil fume when the upper smoke inlet chamber 2 is in any rotation position. The upper smoke inlet chamber 2 and the upper smoke inlet chamber 2 are respectively provided with an upper hidden smoke inlet 2b and a lower hidden smoke inlet 3b. Both are in the closed state and cannot suck in oil fume when the upper smoke inlet chamber 2 is in the closed state, and are in the open state and can suck in oil fume when the upper smoke inlet chamber 2 is in other rotation positions.

[0047] When the upper smoke inlet cavity 2 is in the open state, the smoke collection device can smoke through the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a, so that the smoke collection device has the performance of smoking with a small amount of smoke; when the upper smoke inlet cavity 2 is in the closed state, the smoke collection device can smoke through the upper normally open smoke inlet 2a, the lower normally open smoke inlet 3a, the upper hidden smoke inlet 2b and the lower hidden smoke inlet 3b, so that the smoke collection device has the performance of smoking with a large amount of smoke. And because the upper smoke inlet cavity 2 extends forward when it is in the open state, its smoking coverage range is also expanded. Therefore, when the user is cooking and the amount of oil fume generated is small, the oil fume can be sucked away without controlling the opening of the upper smoke inlet cavity 2. When the amount of oil fume generated is large, controlling the opening of the upper smoke inlet cavity 2 can increase the number of smoke inlets and expand the smoking coverage range, so as to meet the smoking requirements for a large amount of oil fume.

[0048] In this embodiment, when the upper smoke inlet cavity 2 is in the closed state, the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 form a complete outer covering structure 4 that at least covers most of the area of the front plate 11 of the smoke collection cavity 1. The smoke collection device is actually composed of three parts: the smoke collection cavity 1, the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3. Since the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 form a complete outer covering structure 4 when the upper smoke inlet cavity 2 is in the closed state, the smoke collection device is divided into two parts: the smoke collection cavity 1 and the outer covering structure 4 in this state. This can not only improve the structural simplification of the smoke collection device, but also cover the local structures of the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3, playing a role in protecting the structure.

[0049] In this embodiment, the upper normally open smoke inlet 2a is arranged on the two sides of the upper smoke inlet cavity 2, and the lower normally open smoke inlet 3a is arranged on the two sides of the lower smoke inlet cavity 3. Since the top of the upper smoke inlet cavity 2 is rotatably connected to the upper part of the front plate 11 of the smoke collection cavity 1, when the upper smoke inlet cavity 2 rotates to any state within its rotation range, the upper normally open smoke inlet 2a located on the two sides of the upper smoke inlet cavity 2 and the lower normally open smoke inlet 3a located on the two sides of the lower smoke inlet cavity 3 are always in the open state. Thus, both of them can smoke when the upper smoke inlet cavity 2 is in the open state or the closed state. And when the upper smoke inlet cavity 2 is in the closed state, the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a form two side smoke inlet parts 4a located on both sides of the outer covering structure 4. When the upper smoke inlet cavity 2 is in the closed state, the oil fume generated on the stove can be sucked into the smoke collection cavity 1 from both sides of the outer covering structure 4 by the side smoke inlet parts 4a.

[0050] In this embodiment, for the lower smoke inlet cavity 3, lower normally open smoke inlets 3a are provided on both of its two sides, and they are in an open state both when the upper smoke inlet cavity 2 is in a closed state and when it is in an open state, enabling the lower smoke inlet cavity 3 to independently possess the performance of sucking oil fumes. Compared with the prior art where only the movable part corresponding to the upper smoke inlet cavity 2 can suck in smoke, the smoke suction area distribution of the smoke collection device in this embodiment is more extensive, and it has a more excellent smoke suction performance.

[0051] In this embodiment, the front plate 11 of the smoke collection cavity 1 inclines forward from its bottom edge to its top edge, the lower smoke inlet cavity 3 inclines forward from its bottom to its top, and the upper smoke inlet cavity 2 forming the outer covering structure 4 is arranged vertically, that is, the outer covering structure 4 is vertically arranged from its top to the middle as a whole, and then inclines from front to back at its bottom. Therefore, the smoke inlet range of the side smoke inlet part 4a in the front - back direction can be expanded.

[0052] In this embodiment, the two sides of the upper smoke inlet cavity 2 gradually converge towards the middle from the top end to the bottom end, and the two sides of the lower smoke inlet cavity 3 gradually converge towards the middle from the bottom end to the top end. Therefore, the smoke inlet range of the side smoke inlet part 4a in the left - right direction can be expanded.

[0053] The combination of the above two embodiments can expand the smoke inlet range of the two side smoke inlet parts 4a of the outer covering structure 4 in the front - back direction and the left - right direction. Therefore, the smoke collection device has a better smoke suction range when the upper smoke inlet cavity 2 is in a closed state, thereby avoiding the escape of oil fumes.

[0054] In this embodiment, both sides of the front plate 11 of the smoke collection cavity 1 have parts exposed outside the coverage of the outer covering structure 4. This part is close to the side smoke inlet part 4a of the outer covering structure 4. And due to the inclined setting of the front plate 11 of the smoke collection cavity 1, during the process of oil fumes rising upwards, they will contact this part and the rising speed will be slowed down. Under the negative pressure effect of the side smoke inlet part 4a, the oil fumes will flow laterally and be sucked in by the side smoke inlet part 4a. Therefore, the part of the front plate 11 exposed outside the coverage of the outer covering structure 4 forms a smoke guiding plate for increasing the rising resistance of oil fumes and guiding the oil fumes to the side smoke inlet part 4a, further improving the smoke suction ability of the upper smoke inlet cavity 2 in a closed state and avoiding the escape of oil fumes.

[0055] In this embodiment, the upper normally open smoke inlet 2a extends along the length direction of the side part of the upper smoke inlet cavity 2, and the lower normally open smoke inlet 3a extends along the length direction of the side part of the lower smoke inlet cavity 3, which can maximize the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a and improve their smoke suction ability.

[0056] In this embodiment, since the front plate 11 of the smoke collecting cavity 1 is inclined forward from bottom to top, the bottom of the lower smoke inlet cavity 3 is relatively backward in space, which can avoid collision with the cookware. Therefore, the thickness of the lower smoke inlet cavity 3 protruding from the front plate 11 of the smoke collecting cavity 1 gradually increases from its bottom to its top, that is, the widths of the two sides of the lower smoke inlet cavity 3 gradually increase from the bottom to the top, and the width of the lower normally open smoke inlet 3a gradually increases from its bottom end to its top end, thereby increasing the area of the lower normally open smoke inlet 3a and improving its smoke suction ability.

[0057] In this embodiment, the front plate 11 of the smoke collecting cavity 1 has an orifice corresponding to and matching the shape of the upper smoke inlet cavity 2. This orifice can specifically be a hollow structure, a sunken structure, or other structures that can form an opening. Since the upper smoke inlet cavity 2 gradually converges towards the middle from top to bottom, the upper smoke inlet cavity 2 presents a trapezoidal structure. Correspondingly, the orifice of the front plate 11 also presents a trapezoidal structure. The smoke collecting cavity 1 is movably connected with a cover panel 12 that covers the orifice, 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 towards the closed state. The cover panel 12 is provided with an elastic reset member 135 for applying an elastic force to the cover panel 12 to reset it when it is not pushed by the upper smoke inlet cavity 2. On the one hand, through the arrangement of the cover panel 12 movably connected to the smoke collecting cavity 1 and being able to 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 towards the closed state, when the upper smoke inlet cavity 2 is in the closed state, interference with the front plate 11 of the smoke collecting cavity 1 can be avoided, and the front-back width of the smoke collecting device can be made smaller, that is, the smoke collecting device can be made more ultra-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 limit of the upper smoke inlet cavity 2 is lower, that is, the width limit of the two sides of the upper smoke inlet cavity 2 is lower, so that the widths of the two upper normally open smoke inlets 2a of the upper smoke inlet cavity 2 can be maximized to improve its smoke suction ability.

[0058] In this embodiment, the bottom edge of the cover panel 12 is rotatably connected to the bottom edge of the corresponding orifice of the front plate 11, so that when the cover panel 12 is pushed by the upper smoke inlet cavity 2, the cover panel 12 rotates towards the inside of the smoke collecting cavity 1 with its bottom edge as the rotation axis. When the upper smoke inlet cavity 2 is in the closed state, the cover panel 12 is located inside the smoke collecting cavity 1, and the cover panel 12 is inclined backward 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 fume will contact the cover panel 12 and form oil droplets on the cover panel 12. When the user finishes cooking and the upper smoke inlet cavity 2 rotates to the closed state, since the cover panel 12 is pushed into the smoke collecting cavity 1 and is inclined, the oil droplets on the cover panel 12 will flow downward along the front surface of the cover panel 12 and drip into the smoke collecting cavity 1, thereby reducing the oil stain formed on the cover panel 12.

[0059] In this embodiment, the cover panel 12 and the front panel 11 are rotatably connected by at least one rotating component, and the number of rotating components needs to be reasonably set according to the actual width of the cover panel 12. The rotating component includes a rotating shaft 133, a first connecting piece 131 connecting the cover panel 12, and a second connecting piece 132 connecting the front panel 11. Both the first connecting piece 131 and the second connecting piece 132 have at least one sleeve structure 134 sleeved on the rotating shaft 133. The elastic resetting member 135 is set as a torsion spring, which is sleeved on the rotating shaft 133 and its two ends respectively act on the first connecting piece 131 and the second connecting piece 132. By combining the elastic resetting member 135 with the rotating structure, the structure is more simplified and occupies less space.

[0060] In this embodiment, the cover panel 12 is located at the rear side of the front panel 11, and when the cover panel 12 does not contact the upper smoke inlet cavity 2, the elastic force exerted by the elastic resetting member 135 on the cover panel 12 causes the edge of the cover panel 12 to be abutted against the back surface of the front panel 11, thereby preventing a gap from being generated between the cover panel 12 and the edge of the cavity opening.

[0061] In this embodiment, the front surface of the cover panel 12 has a convex structure 121 formed by a plurality of protrusions and extending linearly. The convex structures 121 are arranged at intervals in the left-right direction. When the upper smoke inlet cavity 2 is in an open state, the oil fume floating upward to the cover panel 12 will be resisted by the convex structure 121, thereby reducing the lateral diffusion speed of the oil fume to the left and right sides, making the oil fume more concentrated in the middle area and preventing the oil fume from escaping from both sides.

[0062] In this embodiment, between any two adjacent convex structures 121 on the front surface of the cover panel 12, there is a concave structure 122 formed by a depression and extending linearly. The setting of the concave structure 122 can extend the lateral flow path of the oil fume on the cover panel 12, thereby further slowing down its lateral diffusion speed to prevent the oil fume from escaping from both sides. In addition, when the cover panel 12 is pushed into the smoke collecting cavity 1 by the upper smoke inlet cavity 2, the oil droplets formed on the cover panel 12 can be collected on the concave structure 122 and flow down along the concave structure 122 from top to bottom, that is, the concave structure 122 can serve as a confluence channel for the oil droplets, improving the speed and efficiency of draining the oil droplets on the cover panel 12.

[0063] In this embodiment, the convex structure 121 protrudes from both sides gradually towards the middle to the highest point, and is arc-shaped at the highest point. The concave structure 122 is recessed from both sides gradually towards the middle to the lowest point, and is arc-shaped at the lowest point. The arc-shaped transition settings of the convex structure 121 and the concave structure 122 can prevent the formation of a fold angle on the cover panel 12 and the formation of dirt that is difficult to clean at the fold angle.

[0064] In this embodiment, the upper hidden smoke inlet 2b is disposed 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 the closed state. The lower hidden smoke inlet 3b is disposed at 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 the closed state. Therefore, when the upper smoke inlet chamber 2 is in the open state, it protrudes forward relative to the smoke collecting chamber 1, and the bottom, two sides of the upper smoke inlet chamber 2, the top and two sides of the lower smoke inlet chamber 3 can all suck in the cooking fumes, enabling the smoke collecting device to achieve a multi-dimensional smoke inlet mode, and the smoke inlet distribution area is relatively large and the coverage range is relatively large, so that the smoke collecting chamber 1 has better smoke suction performance for cooking environments with a large amount of cooking fumes.

[0065] In this embodiment, the two side ends of the lower hidden smoke inlet 3b are connected to the tops of the corresponding two lower normally open smoke inlets 3a, maximizing the smoke suction coverage range of the lower smoke inlet chamber 3.

[0066] In this embodiment, an upper panel 51 is disposed on the outer surface of the upper smoke inlet chamber 2, and both sides of the upper panel 51 extend beyond a part of the two sides of the upper smoke inlet chamber 2. A lower panel 52 is disposed on the outer surface of the lower smoke inlet chamber 3, and both sides of the lower panel 52 extend beyond a part of the two sides of the lower smoke inlet chamber 3, so that both sides of the upper panel 51 can block the upper normally open smoke inlets 2a on the two sides of the upper smoke inlet chamber 2, and both sides of the lower panel 52 can block the lower normally open smoke inlets 3a on the two sides of the lower smoke inlet chamber 3, which can not only prevent the upper normally open smoke inlets 2a and the lower normally open smoke inlets 3a from being easily soiled, but also avoid the unsightliness caused by the exposure of the upper normally open smoke inlets 2a and the lower normally open smoke inlets 3a from the perspective facing the smoke collecting device.

[0067] In this embodiment, the bottom edge of the upper panel 51 extends beyond a part of the bottom of the upper smoke inlet chamber 2, and the top edge of the lower panel 52 extends beyond a part of the top of the lower smoke inlet chamber 3; when the upper smoke inlet chamber 2 is in the 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 also blocks the lower hidden smoke inlet 3b on the top of the lower smoke inlet chamber 3, which can prevent the lower hidden smoke inlet 3b from being soiled.

[0068] Embodiment 2:

[0069] An oil fume extractor, referring to Figure 17 , includes a smoke collecting device and a fan device 6. Among them, the smoke collecting device is as shown in Embodiment 1, and the fan device 6 is connected to the top of the smoke collecting device. A fan is provided in the fan device 6. When the fan is started, a negative pressure is formed at the corresponding smoke inlet of the smoke collecting device to suck the cooking fumes into the smoke collecting chamber 1, then into the fan device 6, and finally discharged through a smoke exhaust pipe (not shown in the figure).

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and 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 embodiments 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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