Smoke collecting device and range hood

Abstract

The utility model discloses a smoke collecting device which comprises a smoke collecting cavity, an upper smoke inlet cavity and a lower smoke inlet cavity, wherein the top of the upper smoke inlet cavity is rotatably connected to the upper part of a front plate of the smoke collecting cavity and is communicated with a gas path of the front plate; the lower smoke inlet cavity is fixed at the lower part of the front plate of the smoke collecting cavity and is communicated with the gas path of the front plate; the rotation range of the upper smoke inlet cavity is limited between a closed state in which the upper smoke inlet cavity is folded in the smoke collecting cavity and an open state in which the upper smoke inlet cavity extends towards the front side of the smoke collecting cavity; the upper smoke inlet cavity is provided with a smoke inlet which is at least exposed when the upper smoke inlet cavity is in an open state, lower normally-open smoke inlets are formed in the two side portions of the lower smoke inlet cavity, and the upper smoke inlet cavity is in the open state when the upper smoke inlet cavity is in the closed state and the open state and can suck oil smoke. The utility model further discloses a range hood. The utility model has the beneficial effects that the lower smoke inlet cavity is additionally arranged, and smoke can be sucked when the upper smoke inlet cavity is opened or closed, so that the smoke sucking effect is integrally improved.

Description

Technical Field

[0001] This utility model relates to a smoke collection device and a range hood, belonging to the technical field of kitchen appliances. Background Technology

[0002] An ultra-thin range hood is a modern kitchen appliance primarily used to remove cooking fumes and odors. Compared to traditional range hoods, ultra-thin range hoods are favored for their slim design and high efficiency, especially their smoke collection devices, which are thinner, simpler in structure, and space-saving, making them suitable for small kitchens or open kitchens.

[0003] In the existing technology, the smoke collection device of the ultra-thin range hood is equipped with a rotatable smoke inlet chamber. The smoke inlet chamber extends forward by rotating to draw smoke. However, due to the ultra-thin structure of the ultra-thin range hood, the thickness of the smoke inlet chamber is also relatively thin and the structure is relatively simple. Therefore, the smoke drawing performance of the smoke inlet chamber is sacrificed, resulting in the smoke drawing capacity of the ultra-thin range hood's smoke collection device being relatively weaker than that of other range hoods. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a smoke collection device and a range hood, which can improve the overall smoke collection effect by adding a lower smoke inlet chamber and being able to smoke whether the upper smoke inlet chamber is open or closed.

[0005] This utility model is achieved through the following technical solution.

[0006] A smoke collection device includes: a smoke collection chamber, an upper smoke inlet chamber rotatably connected to the upper part of the front plate of the smoke collection chamber and communicating with its air passage, and a lower smoke inlet chamber fixed to the lower part of the front plate of the smoke collection chamber and communicating with its air passage. The rotation range of the upper smoke inlet chamber is limited between a closed state in which it is retracted into the smoke collection chamber and an open state in which it extends to the front side of the smoke collection chamber.

[0007] The upper smoke inlet chamber is provided with a smoke inlet that is exposed at least when it is in the open state, and the two sides of the lower smoke inlet chamber are provided with lower normally open smoke inlets. The upper smoke inlet chamber is in the open state when it is closed and when it is open, and can draw in oil fumes.

[0008] As a further improvement of this utility model, the top of the lower smoke inlet chamber is provided with a lower hidden smoke inlet, and the upper smoke inlet chamber is blocked by the upper smoke inlet chamber when closed, and is open when open and can draw in oil fumes.

[0009] As a further improvement of this utility model, the lower normally open smoke inlet extends along the side length direction of the lower smoke inlet cavity, and the lower concealed smoke inlet extends along the top length direction of the lower smoke inlet cavity.

[0010] As a further improvement of this utility model, the two side ends of the lower concealed smoke inlet are connected to the top ends of the corresponding two lower normally open smoke inlets.

[0011] As a further improvement of this utility model, both the lower concealed smoke inlet and the lower normally open smoke inlet have multiple grilles spaced apart along their respective length directions.

[0012] As a further improvement of this utility model, the front plate of the smoke collection chamber is inclined forward from its bottom edge to its top edge, and the lower smoke inlet chamber is inclined forward from its bottom edge to its top edge.

[0013] As a further improvement of this utility model, the thickness of the lower smoke inlet chamber protruding from the front plate of the smoke collection chamber gradually increases from its bottom to its top, and the width of the lower normally open smoke inlet gradually increases from its bottom to its top.

[0014] As a further improvement of this utility model, the smoke inlet of the upper smoke inlet cavity includes an upper concealed smoke inlet, which is disposed on the inner surface of the upper smoke inlet cavity. When the upper smoke inlet cavity is closed, it is blocked by the front plate of the smoke collection cavity. When the upper smoke inlet cavity is open, it is in an open state and can draw in oil fumes.

[0015] As a further improvement of this utility model, the smoke inlet of the upper smoke inlet cavity also includes an upper normally open smoke inlet. The upper normally open smoke inlet is provided on both sides of the upper smoke inlet cavity. When the upper smoke inlet cavity is in the closed state and the card-punching state, the upper normally open smoke inlet is in the open state and can draw in oil fumes.

[0016] A range hood includes the smoke collection device and a fan device, wherein the fan device is connected to the top of the smoke collection device.

[0017] The beneficial effects of this utility model are:

[0018] By setting a lower smoke inlet chamber with normally open smoke inlets on both sides, and keeping the upper smoke inlet chamber open in both closed and open states to draw in fumes, the lower smoke inlet chamber independently possesses the function of drawing in fumes. Compared to existing technologies where only the movable part corresponds to the upper smoke inlet chamber for drawing in fumes, this results in a wider distribution of the smoke collection area, superior smoke extraction performance, and an overall improved smoke extraction effect. Attached Figure Description

[0019] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein:

[0020] Figure 1 This is a schematic diagram of the smoke collection device;

[0021] Figure 2 A three-dimensional schematic diagram of the smoke collection device with the upper smoke inlet chamber in the open state;

[0022] Figure 3 A three-dimensional schematic diagram of the smoke collection device with the upper smoke inlet chamber in a closed state;

[0023] Figure 4 This is a side view of the smoke collection device with the upper smoke inlet chamber in the open position.

[0024] Figure 5 This is a side view of the smoke collection device with the upper smoke inlet chamber closed.

[0025] Figure 6 A schematic diagram of a smoke collection device with the upper smoke inlet chamber in the open position;

[0026] Figure 7 A schematic diagram of a smoke collection device with the upper smoke inlet chamber closed;

[0027] Figure 8 This is a schematic diagram of the outer covering structure;

[0028] Figure 9 This is a schematic diagram of the upper smoke inlet chamber, front panel, and cover panel from one perspective.

[0029] Figure 10 This is a schematic diagram of the upper smoke inlet chamber, front panel, and cover panel from another perspective.

[0030] Figure 11 This is a schematic diagram of the rotating assembly;

[0031] Figure 12 This is a schematic diagram showing the cover panel being pushed into the smoke collection chamber during the rotation of the upper smoke inlet chamber;

[0032] Figure 13 A schematic diagram of a panel with raised and recessed structures and an upper smoke inlet chamber;

[0033] Figure 14 This is a schematic diagram of the structure of the panel;

[0034] Figure 15 A schematic diagram illustrating how a panel can block the lateral spread of cooking fumes.

[0035] Figure 16 This is a schematic diagram of the upper smoke inlet chamber;

[0036] Figure 17 This is a partially enlarged schematic diagram of the upper smoke inlet chamber;

[0037] Figure 18 This is a schematic diagram showing the flow of oil droplets inside the upper smoke inlet chamber when it is in the open state.

[0038] Figure 19 This is a schematic diagram showing the path of oil droplets flowing into the oil box when the upper smoke inlet chamber is in the open position;

[0039] Figure 20 This is a schematic diagram showing the path of oil droplets flowing into the oil box when the upper smoke inlet chamber is closed.

[0040] Figure 21 This is a schematic diagram of the lower smoke inlet chamber, window, lower panel, and oil box;

[0041] Figure 22 This is a schematic diagram of the upper smoke inlet chamber, the lower smoke inlet chamber, and the configured grille;

[0042] Figure 23 This is a schematic diagram of a range hood. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0044] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0045] Implementation Case 1:

[0046] A smoke collection device, as shown in the figure Figures 1-22 The system includes a smoke collection chamber 1, an upper smoke inlet chamber 2, and a lower smoke inlet chamber 3. The top of the upper smoke inlet chamber 2 is rotatably connected to the upper part of the front plate 11 of the smoke collection chamber 1 and communicates with its air passage. The lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 of the smoke collection chamber 1 and communicates with its air passage. Both the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 can draw in oil fumes and allow them to flow into the smoke collection chamber 1. The upper smoke inlet chamber 2 has a set rotation range and two extreme states. One extreme state is when the upper smoke inlet chamber 2 is retracted into the smoke collection chamber 1, which is the closed state of the upper smoke inlet chamber 2. The other extreme position is when the upper smoke inlet chamber 2 extends into the smoke collection 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.

[0047] When the upper smoke inlet chamber 2 is closed, it is folded up on the upper part of the front plate 11 of the smoke collection chamber 1, while the lower smoke inlet chamber 3 is fixed on the lower part of the front plate 11 of the smoke collection chamber 1, so that the smoke collection device presents an overall vertical flat structure, which is a typical ultra-thin smoke machine in terms of structural form.

[0048] 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 when the upper smoke inlet chamber 2 is in any rotational position and can draw in oil fumes. The upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 are respectively provided with an upper concealed smoke inlet 2b and a lower concealed smoke inlet 3b. Both are in the closed state when the upper smoke inlet chamber 2 is closed and cannot draw in oil fumes. When the upper smoke inlet chamber 2 is in other rotational positions, it is in the open state and can draw in oil fumes.

[0049] When the upper smoke inlet chamber 2 is open, the smoke collection device can draw in smoke through the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a, thus enabling the device to draw in small amounts of smoke. When the upper smoke inlet chamber 2 is closed, the device can draw in smoke through the upper normally open smoke inlet 2a, the lower normally open smoke inlet 3a, the upper concealed smoke inlet 2b, and the lower concealed smoke inlet 3b, thus enabling the device to draw in large amounts of smoke. Furthermore, because the upper smoke inlet chamber 2 extends forward when open, its smoke coverage area is expanded. Therefore, when cooking and producing a small amount of oily smoke, the user does not need to open the upper smoke inlet chamber 2 to draw in the smoke. When producing a large amount of oily smoke, opening the upper smoke inlet chamber 2 increases the number of smoke inlets and expands the smoke coverage area, thereby meeting the requirements for drawing in large amounts of oily smoke.

[0050] In this embodiment, when the upper smoke inlet chamber 2 is closed, the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 form a complete outer covering structure 4 that covers most of the area of ​​the front plate 11 of the smoke collection chamber 1. The smoke collection device is actually composed of three parts: the smoke collection chamber 1, the upper smoke inlet chamber 2, and the lower smoke inlet chamber 3. Since the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 form a complete outer covering structure 4 when closed, the smoke collection device is divided into two parts in this state: the smoke collection chamber 1 and the outer covering structure 4. This not only simplifies the structure of the smoke collection device but also shields the partial structures of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3, thus protecting the structure.

[0051] In this embodiment, the upper normally open smoke inlet 2a is located on the two sides of the upper smoke inlet chamber 2, and the lower normally open smoke inlet 3a is located 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 collection chamber 1, when the upper smoke inlet chamber 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 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 and can draw in oil fumes, so that both can smoke when the upper smoke inlet chamber 2 is in the open state or the closed state. Furthermore, when the upper smoke inlet chamber 2 is closed, the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a form two side smoke inlets 4a located on both sides of the outer covering structure 4. When the upper smoke inlet chamber 2 is closed, the oil fumes generated on the stove can be drawn into the smoke collection chamber 1 from both sides of the outer covering structure 4 by the side smoke inlets 4a.

[0052] In this embodiment, the lower smoke inlet chamber 3 has two normally open smoke inlets 3a on its two sides, and the upper smoke inlet chamber 2 is open in both the closed and open states and can draw in oil fumes. This allows the lower smoke inlet chamber 3 to independently have the function of drawing in oil fumes. Compared with the prior art, where only the movable part corresponds to the upper smoke inlet chamber 2 and can draw in smoke, the smoke collection device in this embodiment has a larger distribution of smoke-drawing areas and has a more superior smoke-drawing performance.

[0053] In this embodiment, the front plate 11 of the smoke collection 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 edge to its top edge, forming the upper smoke inlet chamber 2 of the outer covering structure 4, which is vertically arranged. This makes the outer covering structure 4 vertically arranged from its top edge to its middle edge and then inclined from front to back edge at its bottom edge, thus expanding the smoke inlet range of the side smoke inlet 4a in the front-back direction.

[0054] In this embodiment, the two sides of the upper smoke inlet chamber 2 gradually converge towards the middle from the top to the bottom, and the two sides of the lower smoke inlet chamber 3 gradually converge towards the middle from the bottom to the top, thus expanding the smoke inlet range of the side smoke inlet section 4a in the left and right directions.

[0055] The combination of the two implementation cases above enables the two side smoke inlets 4a of the outer cover structure 4 to expand their smoke inlet range in the front-back direction and the left-right direction. Therefore, the smoke collection device has a better smoke inlet range when the upper smoke inlet chamber 2 is closed, thereby preventing the oil fumes from escaping.

[0056] In this embodiment, the front plate 11 of the smoke collection chamber 1 has portions on both sides that are exposed outside the coverage area of ​​the outer covering structure 4. These portions are close to the side smoke inlet 4a of the outer covering structure 4. Due to the inclined arrangement of the front plate 11 of the smoke collection chamber 1, the oil fumes will come into contact with these portions as they rise and slow down their upward speed. Under the negative pressure of the side smoke inlet 4a, the oil fumes flow laterally and are sucked in by the side smoke inlet 4a. Therefore, the portions of the front plate 11 exposed outside the coverage area of ​​the outer covering structure 4 form a smoke guide plate to increase the resistance to the rising oil fumes and guide the oil fumes to the side smoke inlet 4a, further improving the smoke extraction capacity of the upper smoke inlet 2 in the closed state and preventing the oil fumes from escaping.

[0057] In this embodiment, the upper normally open smoke inlet 2a extends along the length of the side of the upper smoke inlet chamber 2, and the lower normally open smoke inlet 3a extends along the length of the side of the lower smoke inlet chamber 3. This maximizes the smoking capacity of both the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a.

[0058] In this embodiment, since the front plate 11 of the smoke collection chamber 1 is inclined forward from bottom to top, the bottom of the lower smoke inlet chamber 3 is relatively far back in space, which can avoid collision with the pot. Therefore, the thickness of the lower smoke inlet chamber 3 protruding from the front plate 11 of the smoke collection chamber 1 gradually increases from its bottom to its top, so that the width of the two sides of the lower smoke inlet chamber 3 gradually increases from its bottom to its 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 thus improving its smoke extraction capacity.

[0059] In this embodiment, since the width of the lower normally open smoke inlet 3a gradually increases from its bottom to its top, the two sides of the lower smoke inlet cavity 3 are relatively weak in terms of structural strength. Therefore, the lower normally open smoke inlet 3a has multiple grids s arranged at intervals along its own length direction, which can improve the structural strength of the two sides of the lower smoke inlet cavity 3 and avoid structural deformation and other problems.

[0060] In this embodiment, the upper normally open smoke inlet 2a has multiple grilles s arranged at intervals along its own length, which improves the structural strength of the two sides of the upper smoke inlet chamber 2.

[0061] In this embodiment, the front plate 11 of the smoke collection chamber 1 has an opening corresponding to and matching the shape of the upper smoke inlet chamber 2. The opening can be a hollow structure, a recessed structure, or other structures that can form an opening. Since the upper smoke inlet chamber 2 gradually narrows from the top to the bottom towards the middle, the upper smoke inlet chamber 2 presents a trapezoidal structure. Correspondingly, the opening of the front plate 11 also presents a trapezoidal structure. The smoke collection chamber 1 is movably connected to a cover plate 12 that covers the opening. During the rotation of the upper smoke inlet chamber 2 to the closed state, the cover plate 12 can be pushed into the smoke collection chamber 1 by the upper smoke inlet chamber 2. The cover plate 12 is provided with an elastic reset member 135, which is used to apply elastic force to the cover plate 12 and reset it when it is not pushed by the upper smoke inlet chamber 2. On the one hand, the upper smoke inlet 2 is movably connected to the cover panel 12 of the smoke collection chamber 1, and can be pushed into the smoke collection chamber 1 during the rotation of the upper smoke inlet 2 to the closed state. This prevents the upper smoke inlet 2 from interfering with the front panel 11 of the smoke collection chamber 1 when it is closed, and also makes the front and rear width of the smoke collection device smaller, thus making the smoke collection device thinner. On the other hand, since the cover panel 12 can be pushed into the smoke collection chamber 1 by the upper smoke inlet 2, the thickness limitation of the upper smoke inlet 2 is lower, and the width limitation of the two sides of the upper smoke inlet 2 is lower. This allows the width of the two normally open upper smoke inlets 2a of the upper smoke inlet 2 to be maximized, thereby improving its smoking capacity.

[0062] In this embodiment, 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. When the cover panel 12 is pushed by the upper smoke inlet chamber 2, the cover panel 12 rotates inward toward the smoke collection chamber 1 with its bottom edge as the axis of rotation. When the upper smoke inlet chamber 2 is in the closed state, the cover panel 12 is located in the smoke collection chamber 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 chamber 2 is in the open state, the oil fumes will come into contact with the cover panel 12, thus forming oil droplets on the cover panel 12. When the user finishes cooking, the upper smoke inlet chamber 2 rotates to the closed state. Because the cover panel 12 is pushed into the smoke collection chamber 1 and tilted, the oil droplets on the cover panel 12 will flow down along the front of the cover panel 12 and drip into the smoke collection chamber 1, thereby reducing the oil stains formed on the cover panel 12.

[0063] In this embodiment, the cover panel 12 and the front panel 11 are rotatably connected by at least one rotating assembly. 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 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 reset member 135 is set 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 and the rotating structure, the structure is simplified and occupies less space.

[0064] In this embodiment, the cover panel 12 is located behind the front panel 11, and when the cover panel 12 is not in contact with the upper smoke inlet cavity 2, the elastic force applied to the cover panel 12 by the elastic reset member 135 causes the edge of the cover panel 12 to be pressed against the back of the front panel 11, thereby avoiding the formation of a gap between the cover panel 12 and the edge of the cavity.

[0065] In this embodiment, the front of the panel 12 has multiple raised structures 121 that extend linearly and are spaced apart in the left-right direction. When the upper smoke inlet chamber 2 is open, the oil fumes rising to the panel 12 are resisted by the raised structures 121, thereby reducing the lateral diffusion speed of the oil fumes to the left and right sides, making the oil fumes more concentrated in the middle area, and preventing the oil fumes from escaping from the sides.

[0066] In this embodiment, the front of the panel 12 has a recessed structure 122 formed between any two adjacent protrusions 121 and extending in a linear shape. The recessed structure 122 can extend the lateral flow path of the oil fumes on the panel 12, thereby further slowing down its lateral diffusion speed to prevent the oil fumes from escaping from both sides. In addition, when the panel 12 is pushed into the smoke collection chamber 1 by the upper smoke inlet chamber 2, the oil droplets formed on the panel 12 can be collected on the recessed structure 122 and flow down along the recessed structure 122, so that the recessed structure 122 can serve as a confluence channel for oil droplets, improving the speed and efficiency of oil droplet discharge on the panel 12.

[0067] In this embodiment, the raised structure 121 gradually protrudes from both sides toward the center to the highest point, and has an arc transition at the highest point. The recessed structure 122 gradually recesses from both sides toward the center to the lowest point, and has an arc transition at the lowest point. The arc transition 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.

[0068] In this embodiment, the upper concealed smoke inlet 2b is located on the inner surface of the upper smoke inlet chamber 2 and is blocked by the front plate 11 of the smoke collection chamber 1 when the upper smoke inlet chamber 2 is closed. The lower concealed smoke inlet 3b is located 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 closed. Therefore, when the upper smoke inlet chamber 2 is open, it extends forward relative to the smoke collection chamber 1, and the bottom and two sides of the upper smoke inlet chamber 2, as well as the top and two sides of the lower smoke inlet chamber 3, can all draw in cooking fumes. This allows the smoke collection device to achieve a multi-dimensional smoke intake method, and the smoke intake area is large and the coverage is wide, giving the smoke collection chamber 1 good smoke extraction performance for cooking environments with a large amount of cooking fumes.

[0069] In this embodiment, the two side ends of the lower concealed smoke inlet 3b are connected to the top ends of the corresponding two lower normally open smoke inlets 3a, thereby maximizing the smoke coverage area of ​​the lower smoke inlet chamber 3. Furthermore, the lower concealed smoke inlet 3b has multiple grilles s spaced apart along their respective lengths to enhance structural strength.

[0070] In this embodiment, an upper panel 51 is provided on the outer surface of the upper smoke inlet chamber 2, with both sides of the upper panel 51 extending beyond the two sides of the upper smoke inlet chamber 2. A lower panel 52 is provided on the outer surface of the lower smoke inlet chamber 3, with both sides of the lower panel 52 extending beyond the two sides of the lower smoke inlet chamber 3. This allows the upper panel 51 to cover the upper normally open smoke inlet 2a on the two sides of the upper smoke inlet chamber 2, and the lower panel 52 to cover the lower normally open smoke inlet 3a on the two sides of the lower smoke inlet chamber 3. This not only prevents the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a from easily accumulating dirt, but also prevents the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a from being exposed and causing an unsightly appearance when viewed from the perspective of the smoke collection device.

[0071] In this embodiment, the bottom edge of the upper panel 51 extends beyond the bottom of the upper smoke inlet chamber 2 by a portion, and the top edge of the lower panel 52 extends beyond the top of the lower smoke inlet chamber 3 by a portion. 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 dirt from sticking to the lower hidden smoke inlet 3b.

[0072] In this embodiment, when the smoke collection device absorbs cooking fumes, oil droplets are generated as the fumes enter the upper smoke inlet chamber 2, the lower smoke inlet chamber 3, and the smoke collection chamber 1. An oil box 14 is installed at the bottom of the smoke collection chamber 1 to collect the oil droplets. An oil-draining hole h is provided at the bottom of the upper smoke inlet chamber 2, giving the smoke collection device two oil paths, corresponding to the open and closed states of the upper smoke inlet chamber 2, respectively.

[0073] The first oil path is as follows: when the upper smoke inlet chamber 2 is closed, the oil droplets in the upper smoke inlet chamber 2 flow sequentially to the oil vent h at the bottom of the upper smoke inlet chamber 2, flow into the lower smoke inlet chamber 3 through the lower concealed smoke inlet 3b, flow into the smoke collection chamber 1, and finally flow into the oil box 14.

[0074] The second oil path is as follows: when the upper smoke inlet chamber 2 is in the open state, the oil droplets in the upper smoke inlet chamber 2 flow sequentially to the top of the upper smoke inlet chamber 2, flow into the smoke collection chamber 1, and finally flow into the oil box 14.

[0075] By incorporating oleophobic holes (h), when the upper smoke inlet chamber 2 is closed, the oil droplets formed inside can flow downwards and drip into the lower smoke inlet chamber 3 through the oleophobic holes (h), eventually flowing into the oil box 14 in the smoke collection chamber 1. When the upper smoke inlet chamber 2 is open, the oil droplets formed inside it can flow directly into the smoke collection chamber 1 and then downwards into the oil box 14. This ensures that regardless of whether the upper smoke inlet chamber 2 is open or closed, the oil droplets formed inside it can flow into the oil box 14 through different flow paths, while the oil droplets in the lower smoke inlet chamber 3 can flow directly into the oil box 14 in the smoke collection chamber 1. This prevents the oil droplets inside the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 from accumulating and solidifying into grease.

[0076] In this embodiment, the inner surface of the upper smoke inlet chamber 2 is provided with a central region 2A and two side regions 2B located on both sides of the central region 2A. The two side regions 2B are spaced apart from each other and correspond to two cooktops on the stove. Each side region 2B is provided with an upper concealed smoke inlet 2b, which is located along the edge of the side region 2B. The side regions 2B of the upper smoke inlet chamber 2 are provided with an opening 21, and a negative pressure plate 22 is provided at the opening 21. There is a gap between the edge of the negative pressure plate 22 and the edge corresponding to the opening 21, and this gap has negative pressure and forms the upper concealed smoke inlet 2b. On the one hand, the two side areas 2B correspond to the two stoves on the stove, making the smoke extraction of the upper smoke inlet 2 more targeted. If the two stoves are cooking at the same time, the upper hidden smoke inlets 2b of the two side areas 2B will absorb the oil fumes produced by the two stoves respectively. If only one stove is cooking, the upper hidden smoke inlet 2b of the side area 2B above it will be the main smoke extractor, while the upper hidden smoke inlet 2b of the other side area 2B is located to its side and plays a supporting role in smoke extraction, thereby preventing the oil fumes from escaping laterally. On the other hand, since the upper hidden smoke inlet 2b is formed by the gap between the opening 21 and the edge of the negative pressure plate 22, the upper hidden smoke inlet 2b is set along the edge of the side area 2B, making its smoke extraction range larger and the oil fumes less likely to escape laterally. In particular, it can effectively prevent the oil fumes from escaping from the sides of the upper smoke inlet 2.

[0077] In this embodiment, the negative pressure plate 22 is located within the upper smoke inlet chamber 2, thus defining the direction of the opening 21 of the gap between the edge of the negative pressure plate 22 and the corresponding edge of the opening 21. This creates a negative pressure space between the negative pressure plate 22 and the opening 21, the coverage of which is the area defined by the opening 21. Therefore, the smoking range can be expanded, essentially covering the side area 2B. Furthermore, the negative pressure intensity is greatest at the corresponding upper concealed smoke inlet 2b, resulting in the strongest smoking ability at the edge of the negative pressure space, effectively preventing the escape of fumes. In addition, it should be noted that after entering the negative pressure space, the fumes are drawn in by the upper concealed smoke inlet 2b at the edge of the negative pressure space, reducing the contact between the fumes and the bottom surface of the negative pressure plate 22, thus reducing the oil droplets formed on the bottom surface of the negative pressure plate 22.

[0078] In this embodiment, a central region 2A is formed on the inner surface of the upper smoke inlet chamber 2. Even when the upper smoke inlet chamber 2 is open, the central region 2A protrudes downwards relative to the inner surface of the upper smoke inlet chamber 2. This allows oil droplets formed within the upper smoke inlet chamber 2 to collect in the central region 2A. Furthermore, when the upper smoke inlet chamber 2 is open, the central region 2A is inclined downwards from front to back, causing oil droplets within the upper smoke inlet chamber 2 to collect in the central region 2A and flow into the smoke collection chamber 1 from right to front to back. Therefore, when the upper smoke inlet chamber 2 is open, the oil droplets formed within it first converge in the central region 2A, then flow along the central region 2A into the smoke collection chamber 1, and finally into the oil box 14, thereby improving the oil droplet discharge efficiency when the upper smoke inlet chamber 2 is open.

[0079] In this embodiment, when the upper smoke inlet chamber 2 is open, the fumes are drawn in through the upper concealed smoke inlet 2b located at the edge of the negative pressure plate 22. The fumes flow into the space between the negative pressure plate 22 and the outer surface of the upper smoke inlet chamber 2, and then flow into the smoke collection chamber 1. Therefore, most of the oil droplets in the upper smoke chamber are formed on the top surface of the negative pressure plate 22. When the upper smoke inlet chamber 2 is open, the negative pressure plate 22 is inclined downward from the outer edge to the inner edge, so that the oil droplets formed on the top surface of the negative pressure plate 22 flow from the outer edge to the inner edge and drip into the middle region 2A. Therefore, the efficiency of oil droplets in the upper smoke inlet chamber 2 flowing into the middle region 2A can be improved, thereby improving the oil discharge efficiency when the upper smoke inlet chamber 2 is open.

[0080] In this embodiment, due to the inclined setting of the negative pressure plate 22, the gap width between the outer side of the negative pressure plate 22 and the outer edge of the opening 21 is greater than the gap between the inner side of the negative pressure plate 22 and the inner edge of the opening 21. Therefore, the amount of smoke drawn on the outside of the opening 21 can be increased, effectively preventing the lateral escape of oil fumes.

[0081] In this embodiment, the lower smoke inlet chamber 3 has a window 31 on its front for moving the oil box 14 in or out. Since the lower smoke inlet chamber 3 is connected to the smoke collection chamber 1, the user can move the oil box 14 in or out through the window 31. When the smoke collection device has been used for a certain period of time and the oil level in the oil box 14 is high, the user can remove the oil box 14 through the window 31 for cleaning, and then move the clean oil box 14 back into the smoke collection chamber 1 through the window 31, making the user's cleaning and maintenance work more convenient.

[0082] In this embodiment, the lower smoke inlet chamber 3 has a base support structure 32 extending inward into the smoke collection chamber 1 at the bottom edge of the window 31 on its front side, which supports the oil box 14. The oil box 14 is supported by the base support structure 32, making the oil box 14 more securely placed in the smoke collection chamber 1, preventing it from tipping over. Furthermore, the user can easily remove and insert the oil box 14 by simply pulling it out or inserting it, making the operation convenient. In particular, when inserting it, no other installation operation is required to fix it in the smoke collection chamber 1, making the operation more convenient for the user.

[0083] In this embodiment, the base support structure 32 is provided with at least one limiting structure 321 to limit the position of the oil box 14 on the base support structure 32, so as to prevent misalignment when the oil box 14 is moved in, and to ensure that the oil box 14 is correctly positioned in the smoke collection chamber 1.

[0084] In this embodiment, the limiting structure 321 is formed by a protrusion on the bottom support surface and extends along the moving-in and moving-out direction of the oil box 14. The bottom of the oil box 14 has a limiting groove 141 that cooperates with the limiting structure 321 at the corresponding limiting structure 321. The cooperation between the limiting structure 321 and the limiting groove 141 can avoid precise positioning in the left and right directions.

[0085] In this embodiment, the lower panel 52 seals and covers the window 31 on the front of the lower smoke inlet chamber 3. This not only prevents dust from entering the smoke collection chamber 1 through the window 31, but also makes the window 31 more aesthetically pleasing. The lower panel 52 and the lower smoke inlet chamber 3 are detachably or movably connected. The removal or movement of the lower panel 52 exposes the window 31. After removing the lower panel 52 or moving it away from the front of the lower smoke inlet chamber 3, the user can remove the oil box 14 from the window 31 for cleaning. After the clean oil box 14 is moved back into the smoke collection chamber 1 through the window 31, the panel is then attached to the front of the lower smoke inlet chamber 3 to seal and cover the window 31.

[0086] In this embodiment, the lower panel 52 and the lower smoke inlet chamber 3 are rotatably connected, and the lower panel 52 and the lower smoke inlet chamber 3 are provided with a magnetic attraction component for attaching the lower panel 52 to the front of the lower smoke inlet chamber 3. The user only needs to use a certain force to pry the lower panel 52 outward to separate the magnetic attraction component and flip the lower panel 52 to expose the window 31. After the oil box 14 is moved back into the smoke collection chamber 1 from the window 31, the lower panel 52 is rotated to attach to the front of the lower smoke inlet chamber 3. The magnetic attraction component will make the lower panel 52 fit tightly to the front of the lower smoke inlet chamber 3. More specifically, the bottom edge of the lower panel 52 is rotatably connected to the bottom of the lower smoke inlet chamber 3. Rotating hinges 521 are respectively provided on both sides of the bottom edge of the lower panel 52 to realize the rotational connection of the lower panel 52. The magnetic suction assembly includes a magnetic stone 522 provided on the upper front of the lower smoke inlet chamber 3 and a magnetic plate 523 provided on the inner surface of the lower panel 52.

[0087] Implementation Case 2:

[0088] A type of range hood, as shown in the reference Figure 23 It includes a smoke collection device and a fan device 6. As shown in Implementation Case 1, the smoke collection device is connected to the top of the smoke collection device. The fan device 6 is equipped with a fan. When the fan is started, it creates a negative pressure at the corresponding smoke inlet of the smoke collection device, thereby drawing the oil fumes into the smoke collection chamber 1, then into the fan device 6, and finally out through the exhaust pipe (not shown in the figure).

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A smoke collection device, characterized in that, include: The upper smoke inlet chamber (2) is rotatably connected to the upper part of the front plate (11) of the smoke collection chamber (1) and communicates with its air passage, and the lower smoke inlet chamber (3) is fixed to the lower part of the front plate (11) of the smoke collection chamber (1) and communicates with its air passage. The rotation range of the upper smoke inlet chamber (2) is limited between its closed state when it is retracted into the smoke collection chamber (1) and its open state when it extends to the front side of the smoke collection chamber (1). The upper smoke inlet chamber (2) is provided with a smoke inlet that is exposed at least when it is in the open state, and the two sides of the lower smoke inlet chamber (3) are provided with lower normally open smoke inlets (3a). The upper smoke inlet chamber (2) is in the open state and can draw in oil fumes when it is closed and open.

2. The smoke collection device according to claim 1, characterized in that, The lower smoke inlet chamber (3) is provided with a lower hidden smoke inlet (3b) at the top, and the upper smoke inlet chamber (2) is blocked by the upper smoke inlet chamber (2) when it is closed, and the upper smoke inlet chamber (2) is open when it is open and can draw in oil fumes.

3. The smoke collection device according to claim 2, characterized in that, The lower normally open smoke inlet (3a) extends along the side length direction of the lower smoke inlet cavity (3), and the lower concealed smoke inlet (3b) extends along the top length direction of the lower smoke inlet cavity (3).

4. The smoke collection device according to claim 3, characterized in that, The two side ends of the lower concealed smoke inlet (3b) are connected to the top ends of the corresponding two lower normally open smoke inlets (3a).

5. The smoke collection device according to claim 3, characterized in that, Both the lower concealed smoke inlet (3b) and the lower normally open smoke inlet (3a) have multiple grilles (s) spaced apart along their respective length directions.

6. The smoke collection device according to claim 1, characterized in that, The front plate (11) of the smoke collection 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 edge to its top edge.

7. The smoke collection device according to claim 6, characterized in that, The thickness of the lower smoke inlet chamber (3) protruding from the front plate (11) of the smoke collection chamber (1) gradually increases from its bottom to its top, and the width of the lower normally open smoke inlet (3a) gradually increases from its bottom to its top.

8. The smoke collection device according to claim 1, characterized in that, The upper smoke inlet (2) includes an upper concealed smoke inlet (2b), which is disposed on the inner surface of the upper smoke inlet (2). When the upper smoke inlet (2) is closed, it is blocked by the front plate (11) of the smoke collection chamber (1). When the upper smoke inlet (2) is open, it is open and can draw in oil fumes.

9. The smoke collection device according to claim 8, characterized in that, The upper smoke inlet (2) also includes an upper normally open smoke inlet (2a). The upper normally open smoke inlet (2a) is provided on both sides of the upper smoke inlet (2). When the upper smoke inlet (2) is in the closed state and the card-punching state, the upper normally open smoke inlet (2a) is in the open state and can suck in oil fumes.

10. A range hood, characterized in that, Includes the smoke collection device and the fan device (6) according to any one of claims 1-9, wherein the fan device (6) is connected to the top of the smoke collection device.

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