Smoke collecting device and range hood

Abstract

The utility model discloses a smoke collecting device which comprises a smoke collecting cavity, a front plate of the smoke collecting cavity is provided with a concave cavity which is concave inwards, and the concave cavity is provided with a plurality of smoke inlets which are formed in the position close to the edge of the concave cavity and have different smoke inlet directions. A front plate of the smoke collecting cavity is rotationally connected with a smoke baffle, and the smoke baffle rotates to seal the concave cavity and extend out of the front side of the smoke collecting cavity. The utility model further discloses a range hood. The utility model has the beneficial effect that the ultra-thin machine body can be realized under the condition of good smoking performance.

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 ultra-thin range hoods is limited by its simple structure and ultra-thin body, and its smoke extraction performance is relatively weak compared with other traditional range hoods. Utility Model Content

[0004] The purpose of this invention is to provide a smoke collection device and a range hood that can achieve an ultra-thin body while having good smoke extraction performance.

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

[0006] A smoke collection device includes a smoke collection chamber, the front plate of which has an inwardly recessed cavity, the cavity having a plurality of smoke inlets arranged near the edge of the cavity and having different smoke inlet directions; the front plate of the smoke collection chamber is rotatably connected to a smoke baffle, the rotation of which causes the smoke baffle to close the cavity and extend to the front side of the smoke collection chamber.

[0007] As a further improvement of this utility model, the cavity includes an upper cavity wall extending inward from the upper edge of the cavity, side cavity walls extending inward from the two side edges of the cavity respectively, and an inner cavity wall extending inward from the lower edge of the cavity and connected to the upper cavity wall and the two side cavity walls; the smoke inlet includes an upper smoke inlet disposed on the upper cavity wall and side smoke inlets disposed on the two side cavity walls respectively.

[0008] As a further improvement of this utility model, the lower edge of the concave cavity is formed on the bottom edge of the front plate of the smoke collection chamber, the upper edge of the concave cavity is formed in the middle of the front plate of the smoke collection chamber, and the two side edges of the concave cavity are inclined forward from their top to their top.

[0009] As a further improvement of this utility model, the inner cavity wall is inclined forward from bottom to top, so that the inner cavity wall forms an oil fume deceleration wall for increasing the resistance to the rising of oil fumes and guiding the oil fumes to the upper smoke inlet and the side smoke inlet.

[0010] As a further improvement of this utility model, the upper cavity wall is inclined downward from front to back to expand the smoking range of the upper smoke inlet.

[0011] As a further improvement of this utility model, the side cavity wall is inclined inward from front to back to expand the smoking range of the side smoke inlet.

[0012] As a further improvement of this utility model, the upper smoke inlet covers the upper cavity wall, and the side smoke inlet covers the side cavity wall.

[0013] As a further improvement of this utility model, the upper smoke inlet and the side smoke inlet are provided with grilles spaced apart along their respective length directions.

[0014] As a further improvement of this utility model, when the smoke baffle is rotated to the limit position extending towards the front of the smoke collection chamber, the smoke baffle is inclined downward from back to front.

[0015] 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.

[0016] The beneficial effects of this utility model are:

[0017] The smoke inlet is set at the edge of the concave cavity, which creates a negative pressure space within the cavity and guides the flow of oil fumes. The smoke inlet at the edge maximizes the negative pressure intensity at the edge of the concave cavity, which can effectively prevent the oil fumes from escaping. Different smoke inlet directions can diversify the smoking dimensions of the smoke collection cavity, and the smoke inlets in different directions are complementary to each other, realizing a dynamic compensation mechanism for smoking.

[0018] The concave cavity, through its concave structure and multi-directional smoke inlet layout, creates a highly efficient negative pressure zone, significantly improving its fume extraction performance. Specifically, the concave cavity's design resembles a funnel structure. When fumes enter the cavity, the airflow accelerates due to the space contraction. According to Bernoulli's principle, the increased flow velocity leads to a decrease in pressure, creating a negative pressure zone inside the cavity and near the smoke inlets. This negative pressure zone is expanded through multiple smoke inlets (such as the upper and side smoke inlets) along the cavity's edge, forming a "U"-shaped negative pressure distribution. This expands the negative pressure coverage area to the entire perimeter of the cavity, thereby adsorbing a wider range of fumes. This combined effect allows the concave cavity's negative pressure zone to actively capture diffused fumes while reducing pressure fluctuations caused by external air mixing, ultimately achieving a highly efficient and low-escape fume extraction effect.

[0019] By designing an inwardly recessed cavity, the structure not only avoids increasing the width of the smoke collection chamber in the front-to-back direction, but also compensates for the reduced overall smoke collection performance due to its superior smoke extraction performance, thus achieving an ultra-thin design. Attached Figure Description

[0020] 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:

[0021] Figure 1 This is a front view of the smoke collection chamber with the smoke baffle closed.

[0022] Figure 2 This is a front view of the smoke collection chamber with the smoke baffle open.

[0023] Figure 3 This is a schematic diagram of the smoke collection chamber with the smoke baffle open and viewed from a three-dimensional perspective.

[0024] Figure 4 This is a structural diagram of a range hood. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] 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.

[0027] Implementation Case 1:

[0028] A smoke collection device, as shown in the figure Figures 1-3 The system includes a smoke collection chamber 1. The front plate 11 of the smoke collection chamber 1 has an inwardly recessed cavity 12. The cavity 12 has multiple smoke inlets, which are arranged near the edge of the cavity 12 and have different smoke inlet directions. A smoke baffle 13 is rotatably connected to the front plate 11 of the smoke collection chamber 1. The smoke baffle 13 is specifically rotatably connected to the upper edge of the cavity 12. The rotation axis of the smoke baffle 13 is horizontal, and the size and shape of the smoke baffle 13 are adapted to the opening shape of the cavity 12. Therefore, the rotation of the smoke baffle 13 can either close the cavity 12 or extend the smoke baffle 13 towards the front of the smoke collection chamber 1.

[0029] In this embodiment, the smoke collection chamber 1 features a recessed cavity 12 on its front plate 11, with smoke inlets at the edges of the cavity 12. This creates a negative pressure space within the cavity 12, allowing it to guide the flow of fumes. The smoke inlets at the edges maximize the negative pressure, effectively preventing fumes from escaping. The different directions of these smoke inlets diversify the smoke collection dimensions of the chamber, and they complement each other. If one smoke inlet experiences a heavy localized smoke load, other inlets can quickly compensate, maintaining overall smoke collection performance and achieving a dynamic compensation mechanism. The baffle plate 13, when closed, seals the cavity 12, preventing dust and dirt from entering the cavity 12 and smoke inlets. When open, it acts as a smoke barrier, assisting the cavity 12 and smoke inlets in smoke collection. It should be noted that in this embodiment, the smoke collection chamber 1, by setting an inwardly recessed cavity 12, not only does not increase the width of the smoke collection chamber 1 in the front-back direction, but also compensates for the overall smoke collection performance after the width of the smoke collection chamber 1 is reduced through its excellent smoke collection performance, thereby achieving ultra-thin design.

[0030] In this embodiment, the cavity 12 includes an upper cavity wall 121, two side cavity walls 122, and an inner cavity wall 123. The upper cavity wall 121 extends inward from the upper edge of the cavity 12, the two side cavity walls 122 extend inward from the two sides of the cavity 12, and the inner cavity wall 123 extends inward from the bottom edge of the cavity 12. The upper cavity wall 121, the two side cavity walls 122, and the inner cavity wall 123 are connected at their edges within the cavity 12. The smoke inlet includes an upper smoke inlet a1 and two side smoke inlets a2. The upper smoke inlet a1 is located on the upper cavity wall 121 of the cavity 12, and the two side smoke inlets a2 are located on the two side cavity walls 122 of the cavity 12. The top smoke inlet a1 can capture the main path of the natural vertical rise of oil fumes, especially during stir-frying or deep-frying, and can concentrate on processing the rapidly rising dense smoke. The two side smoke inlets a2 can target the lateral diffusion of oil fumes overflowing from the edge of the pot, such as the oil mist splashed during stir-frying, thereby capturing the low-altitude oil fumes that escape due to pot obstruction or airflow disturbance. In addition, when the top smoke inlet a1 has insufficient local suction due to a sudden increase in the amount of oil fumes, the two side smoke inlets a2 can respond quickly and form a triangular surround adsorption, thereby improving the overall smoke extraction performance.

[0031] In this embodiment, the lower edge of the concave cavity 12 is formed on the bottom edge of the front plate 11 of the smoke collection chamber 1, and the upper edge of the concave cavity 12 is formed in the middle of the front plate 11 of the smoke collection chamber 1. This arrangement places the concave cavity 12 in the lower part of the front plate 11 of the smoke collection chamber 1, bringing it closer to the cooking fumes and improving its fume capture capability. The two side edges of the concave cavity 12 are angled forward from its top to its bottom, so that the opening direction of the concave cavity 12 is obliquely downward. This allows the cooking fumes to be more easily guided into the concave cavity 12, further improving its smoke extraction performance.

[0032] In this embodiment, the inner cavity wall 123 is inclined forward from bottom to top. As the oil fumes rise, they will come into contact with the inner cavity wall 123 and slow down their rising speed. Under the negative pressure of the upper smoke inlet a1 and the side smoke inlet a2, they are sucked in. Therefore, the inner cavity wall 123 is used to increase the resistance to the rising oil fumes and guide the oil fumes to the oil fume deceleration wall of the upper smoke inlet a1 and the side smoke inlet a2, which further improves the performance of preventing oil fumes from escaping.

[0033] In this embodiment, the upper cavity wall 121 is inclined downwards from front to back to expand the smoking range of the upper smoke inlet a1. The side cavity wall 122 is inclined inwards from front to back to expand the smoking range of the side smoke inlet a2.

[0034] In this embodiment, the upper smoke inlet a1 covers the upper cavity wall 121, and the side smoke inlet a2 covers the side cavity wall 122, maximizing the area of ​​the upper smoke inlet a1 and the two side smoke inlets a2. This creates a continuous negative pressure surface, resulting in a structure where the smoke inlets extend upwards from the bottom of the two side cavity walls 122 of the concave cavity 12 to the top, and then extend inwards from both ends of the upper cavity wall 121. This ensures that the fumes, whether escaping from a vertical, horizontal, or inclined direction, are quickly absorbed by the nearest smoke inlet, thereby improving the smoke extraction performance of both.

[0035] In this embodiment, since the upper smoke inlet a1 covers the upper cavity wall 121 and the side smoke inlet a2 covers the side cavity wall 122, the structural strength of the concave cavity 12 is relatively weak, which can easily lead to deformation of the shape of the upper smoke inlet a1 and the two side smoke inlets a2. Based on this, the upper smoke inlet a1 and the side smoke inlets a2 are provided with grilles b spaced apart along their respective length directions, thereby improving the structural strength and preventing deformation.

[0036] In this embodiment, when the smoke baffle 13 is rotated to the limit position extending towards the front of the smoke collection chamber 1, the smoke baffle 13 is inclined downward from back to front. The direction of the smoke baffle 13 is set so that it blocks the oil fumes from rising and directs them towards the concave cavity 12, thus playing the role of blocking and guiding the oil fumes.

[0037] In this implementation case, an oil box is provided at the bottom of the smoke collection chamber. Oil fumes enter the smoke collection chamber through the smoke inlet. The oil droplets formed by the oil fumes in the smoke collection chamber flow downward and are collected by the oil box. After a certain period of use, the user can remove the oil box, clean the oil stains, and then reassemble the oil box at the bottom of the smoke collection chamber.

[0038] Implementation Case 2:

[0039] A type of range hood, as shown in the reference Figure 4 It includes a smoke collection device and a fan device 2. As shown in Implementation Case 1, the smoke collection device is connected to the top of the smoke collection device. The fan device 2 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 2, and finally discharged through the exhaust pipe (not shown in the diagram).

[0040] 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 fume collecting device, characterized by, The smoke collection chamber (1) includes a front plate (11) with an inwardly recessed cavity (12). The cavity (12) is provided with a plurality of smoke inlets arranged near the edge of the cavity (12) and having different smoke inlet directions. The front plate (11) of the smoke collection chamber (1) is rotatably connected to a smoke baffle (13). The rotation of the smoke baffle (13) causes it to close the cavity (12) and extend to the front side of the smoke collection chamber (1).

2. The smoke device of claim 1, wherein, The cavity (12) includes an upper cavity wall (121) extending inward from the upper edge of the cavity (12), side cavity walls (122) extending inward from the two side edges of the cavity (12), and an inner cavity wall (123) extending inward from the lower edge of the cavity (12) and connected to the upper cavity wall (121) and the two side cavity walls (122); the smoke inlet includes an upper smoke inlet (a1) disposed on the upper cavity wall (121) and side smoke inlets (a2) disposed on the two side cavity walls (122).

3. The air management device of claim 2, wherein, The lower edge of the cavity (12) is formed on the bottom edge of the front plate (11) of the smoke collection chamber (1), the upper edge of the cavity (12) is formed in the middle of the front plate (11) of the smoke collection chamber (1), and the two side edges of the cavity (12) are inclined forward from their top to their top.

4. The air management device of claim 3, wherein, The inner cavity wall (123) is inclined forward from bottom to top, so that the inner cavity wall (123) forms a fume deceleration wall to increase the resistance to the rise of oil fumes and guide the oil fumes to the upper smoke inlet (a1) and the side smoke inlet (a2).

5. The air management device of claim 3, wherein, The upper cavity wall (121) is inclined downward from front to back to expand the smoking range of the upper smoke inlet (a1).

6. The air management device of claim 3, wherein, The side cavity wall (122) is inclined inward from front to back to expand the smoking range of the side smoke inlet (a2).

7. The air management device of claim 3, wherein, The upper smoke inlet (a1) covers the upper cavity wall (121), and the side smoke inlet (a2) covers the side cavity wall (122).

8. The air management device of claim 7, wherein, The upper smoke inlet (a1) and the side smoke inlet (a2) are provided with grilles (b) spaced apart along their respective length directions.

9. The air management device of claim 3, wherein, When the smoke baffle (13) is rotated to the limit position extending towards the front of the smoke collection chamber (1), the smoke baffle (13) is inclined downward from back to front.

10. A range hood characterized by, Includes the smoke collection device and the fan device (2) as described in any one of claims 1-9, wherein the fan device (2) is connected to the top of the smoke collection device.

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