Smoke suction structure and range hood
By designing an openable and closable smoke baffle structure, combined with smoke containment and surround suction functions, the range hood dynamically matches the amount of oil smoke and noise requirements, solving the noise and suction power issues of the range hood in different cooking scenarios and achieving multi-scenario applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-09
AI Technical Summary
Existing range hoods suffer from problems such as excessive noise or insufficient suction power in different cooking scenarios. The cage-type structure is noisy, while the ring-type structure has weak suction power, which cannot meet diverse cooking needs.
Design a smoke extraction structure including an openable and closable smoke baffle and a drive component. By switching between closed and open states through the smoke baffle, and combining smoke containment and surround suction functions, it can dynamically match the amount of oil smoke and noise requirements to achieve applicability in multiple scenarios.
It enhances smoke extraction and reduces noise in high-smoke scenarios, and reduces noise and increases suction power in low-smoke scenarios to meet different cooking needs, thus overcoming the limitations of traditional designs.
Smart Images
Figure CN224340192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of range hoods, and in particular to a smoke extraction structure and a range hood. Background Technology
[0002] Currently, the smoke extraction structure of close-range suction range hoods can be broadly divided into two categories: cage-type and ring-type.
[0003] The smoke-encasing design features an openable and closable smoke baffle. When closed, it is aesthetically pleasing, and when open, it effectively encloses smoke at the front of the range hood. This helps to buffer the smoke and temporarily block its rise and spread in scenarios where a large amount of oil fumes are generated, such as stir-frying, ensuring that the large amount of oil fumes generated instantly can be drawn into the range hood. However, because the smoke baffle is open during cooking, the noise generated by the range hood can be transmitted to the outside without obstruction from the air intake, resulting in relatively high noise levels during cooking with this type of range hood.
[0004] The ring-suction type of smoke extraction structure has a ring-suction plate designed directly in front of the air intake. Based on the Coanda effect, the ring-suction plate can help the oil fumes adhere to the wall and prevent them from spreading. Also, because the ring-suction plate is located directly in front of the air intake, it plays a certain role in sound insulation, making the noise of this type of range hood relatively low during cooking. However, at the same time, the ring-suction plate also blocks the rapid flow of air from the air intake to some extent, resulting in greater airflow loss and a smaller air volume, making it unsuitable for cooking scenarios with a large amount of oil fumes. Utility Model Content
[0005] Therefore, it is necessary to address the issues of excessive noise in current cage-type smoke extraction structures and weak smoke extraction capacity in ring-type smoke extraction structures by providing a smoke extraction structure and range hood that can meet different needs such as noise reduction and strong suction.
[0006] This application first provides a smoking structure, including
[0007] The box body has a smoke chamber, and the bottom wall of the smoke chamber has a smoke inlet;
[0008] A smoke baffle, hinged to the housing, has a closed state and an open state. In the closed state, the smoke baffle is parallel to the surface of the housing where the smoke chamber is located, and an annular gap is formed between the smoke baffle and the inner wall of the smoke chamber. In the open state, the smoke baffle is at least partially located outside the smoke chamber.
[0009] A drive assembly, disposed within the housing and with its movable end hinged to the smoke baffle, is used to drive the opening and closing of the smoke baffle.
[0010] In one embodiment, when closed, the gap width between the smoke baffle and the inner wall of the smoke chamber is less than or equal to 20 mm.
[0011] In one embodiment, the opening edge of the inner wall of the smoke chamber is chamfered.
[0012] In one embodiment, when closed, the edges of both sides of the smoke baffle, near and away from the smoke inlet, are chamfered.
[0013] In one embodiment, the smoking structure further includes an oil cup, which is detachably fixed to the bottom of the housing, and one side surface of the oil cup is flush with the surface of the housing where the smoke chamber is located.
[0014] In one embodiment, the oil cup is fixed with a guide portion that protrudes between the bottom end of the smoke baffle and the inner bottom wall of the smoke chamber, so as to form an oil sludge channel communicating with the inside of the oil cup between the guide portion and the inner bottom wall of the smoke chamber.
[0015] In one embodiment, the smoke chamber includes a clearance chamber and a smoking chamber that are interconnected. The smoking port is opened on the bottom wall of the smoking chamber. In the closed state, the projection of the smoking port along its own orientation direction is completely located within the smoke baffle.
[0016] In one embodiment, the depth of the smoking chamber gradually increases from bottom to top.
[0017] In one embodiment, the inner wall of the clearance cavity is contoured to the movement trajectory of the end of the smoke baffle, and the gap distance between the end of the smoke baffle and the inner wall of the clearance cavity remains unchanged during the opening and closing of the smoke baffle.
[0018] This application also provides a range hood, including the above-described smoke extraction structure.
[0019] The aforementioned smoke extraction structure can switch between closed and open states by opening and closing the smoke baffle. This allows the smoke baffle to be used for both smoke containment and surround suction. In scenarios with high smoke volume, it can contain smoke and enhance smoke extraction. In scenarios with low smoke volume, it can act as a surround suction plate to reduce operating noise. By dynamically matching the requirements of smoke volume and operating noise, it can adapt to different cooking scenarios, thereby meeting different cooking needs and overcoming the limitations of traditional designs. Attached Figure Description
[0020] Figure 1 This is a perspective view of the smoking structure of this application with the smoke baffle in the open state;
[0021] Figure 2 for Figure 1 A cross-sectional view along the left-side view;
[0022] Figure 3 for Figure 2 A schematic diagram showing the smoke baffle in the closed state;
[0023] Figure 4 for Figure 3 A sectional view taken from a top-down perspective.
[0024] Reference numerals: 10, housing; 11, smoke chamber; 111, clearance chamber; 112, smoke chamber; 12, smoke inlet; 20, smoke baffle; 30, drive assembly; 40, oil cup; 41, guide section. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, this application first provides a smoking structure, including a housing 10 with a smoke-cage chamber 11 and a smoking port 12 on the bottom wall of the smoke-cage chamber 11; a smoke baffle 20, hinged to the housing 10, having a closed state and an open state. In the closed state, the smoke baffle 20 is parallel to the surface of the housing 10 with the smoke-cage chamber 11, and an annular gap is formed between the smoke baffle 20 and the inner wall of the smoke-cage chamber 11. In the open state, the smoke baffle 20 is at least partially located outside the smoke-cage chamber 11; and a driving assembly 30, disposed inside the housing 10 and with its movable end hinged to the smoke baffle 20, for driving the opening and closing of the smoke baffle 20.
[0032] In this application, the smoke baffle 20 can be switched between a closed state and an open state by opening and closing, thereby utilizing the multiple functions of the smoke baffle 20 to both contain smoke and provide surrounding suction. In high smoke scenarios, it is used to contain smoke and enhance the smoke suction effect, while in low smoke scenarios, it acts as a surrounding suction plate to reduce operating noise. By dynamically matching the requirements of smoke volume and operating noise, it can adapt to different cooking scenarios, thereby meeting different cooking needs and solving the scenario limitations of traditional designs.
[0033] Specifically, when in a high-volume oil fume scenario (such as stir-frying), by rotating the smoke baffle 20 to the open state, the smoke baffle 20 is rotated to be partially located outside the smoke-collecting chamber 11, so as to cooperate with the smoke-collecting chamber 11 to form a large-scale smoke-collecting and smoke-absorbing space, thereby achieving the effects of blocking the spread of oil fumes, relieving instantaneous oil fume pressure, and reducing oil fume escape, thus ensuring that a large amount of oil fumes generated instantaneously can be sucked into the smoke-absorbing port 12.
[0034] When in a low-smoke scenario (such as steaming or cooking), by rotating the smoke baffle 20 to the closed state, the smoke baffle 20 rotates to be parallel to the surface of the housing 10 and forms an annular gap with the inner wall of the smoke chamber 11. At this time, the smoke baffle 20 acts as an annular suction plate, using the Coanda effect (wall attachment) to guide the smoke through the gap for inhalation. At the same time, the smoke baffle 20 can also effectively reduce noise.
[0035] In some embodiments, in the closed state, the gap width between the smoke baffle 20 and the inner wall of the smoke chamber 11 is less than or equal to 20 mm.
[0036] It is understandable that the smaller the gap width, the smaller the airflow loss, but the smoke containment effect is relatively weak. On the other hand, the larger the gap width, the better the smoke containment effect, but the airflow loss will increase due to the weakening of the wall adhesion effect. In this application, by limiting the gap width to less than or equal to 20mm, the smoke extraction structure of this application can achieve a balance between airflow and smoke containment effect when the smoke baffle 20 is closed, and obtain a relatively excellent smoke extraction effect in low smoke volume scenarios.
[0037] Furthermore, the gap width here refers to the distance between the smoke baffle 20 and the outermost end of the inner wall of the smoke chamber 11. The outer end refers to the end away from the smoking port 12. For example, the distance between the upper end of the smoke baffle 20 and the outermost end of the upper inner wall of the smoke chamber 11, and the distance between the lower end of the smoke baffle 20 and the outermost end of the lower inner wall of the smoke chamber 11.
[0038] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, the opening edge of the inner wall of the smoke chamber 11 is chamfered. The chamfer serves to guide and eject airflow, forming a gradually changing airflow channel on the opening side of the smoke chamber 11. This allows the airflow to smoothly turn along the slope, reducing turbulence noise while improving the smoke extraction effect.
[0039] Specifically, the smoke baffle 20 corresponds to the chamfered portion of the inner wall of the smoke chamber 11.
[0040] Please refer to Figure 3 As shown, in some embodiments, in the closed state, the edges of the two sides of the baffle plate 20 near and away from the smoke inlet 12 are chamfered. The chamfer of the outer edge can cooperate with the chamfer of the smoke chamber 11 to form a V-shaped airflow channel, which accelerates the oil fumes to converge into the smoke chamber 11. The chamfer of the inner edge can guide the oil fumes passing through the V-shaped airflow channel towards the smoke inlet 12, so as to reduce the turbulence caused by the collision between the oil fumes and the inner wall of the smoke chamber 11, thereby reducing turbulence noise and improving the oil fume extraction effect.
[0041] Please refer to Figure 3 As shown, in some embodiments, the smoking structure also includes an oil cup 40, which is detachably fixed to the bottom of the housing 10, and one side surface of the oil cup 40 is flush with the surface of the housing 10 where the smoke chamber 11 is located, ensuring a flat appearance while preventing oil stains from accumulating at the seams, making it easy for users to clean.
[0042] Specifically, the oil cup 40 is detachably fixed to the bottom of the box 10 by means of snap-fit connection, bolt connection, etc.
[0043] Please refer to Figure 3 As shown, in some embodiments, the oil cup 40 is fixed with a guide portion 41, which protrudes between the bottom end of the smoke baffle 20 and the lower surface of the smoke chamber 11, so as to form an oil sludge channel communicating with the interior of the oil cup 40 between the guide portion 41 and the lower surface of the smoke chamber 11.
[0044] It should be understood that the side surface of the guide portion 41 near the smoke baffle 20 can be used to guide the oil fumes into the smoke chamber 11, while the side surface away from the smoke baffle 20 can form an oil sludge channel to prevent oil droplets from splashing out and ensure that the oil droplets can flow into the oil cup 40.
[0045] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the smoke chamber 11 includes a clearance chamber 111 and a smoke chamber 112 that are interconnected. The clearance chamber 111 provides movement space for the rotation of the smoke baffle 20. The smoke inlet 12 is opened on the bottom wall of the smoke chamber 112. In the closed state, the projection of the smoke inlet 12 along its own orientation direction is completely located inside the smoke baffle 20 to ensure that the smoke inlet 12 is not exposed in the closed state.
[0046] Furthermore, in some embodiments, the depth of the smoke chamber 112 gradually increases from bottom to top to guide the fumes to concentrate along the wall towards the smoke inlet 12, optimize the smoke extraction effect and avoid turbulence.
[0047] Specifically, the bottom wall cross-section of the smoking chamber 112 can be inclined or curved, and this application does not make further limitations here.
[0048] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the inner wall of the relief cavity 111 and the end of the smoke baffle 20 are shaped to follow the movement trajectory. That is, during the opening and closing of the smoke baffle 20, the gap distance between the end of the smoke baffle 20 and the inner wall of the relief cavity 111 remains unchanged, so as to reduce the space requirement of the relief cavity 111 and improve the space utilization of the smoking structure of this application.
[0049] Furthermore, it should be understood that since the smoke baffle 20 is hinged to the housing 10, the movement trajectory of the end of the smoke baffle 20 is arc-shaped, which makes the inner wall of the relief cavity 111 conform to the arc-shaped movement trajectory. The arc-shaped inner wall of the relief cavity 111 can also play a role in guiding airflow when the smoke baffle 20 is closed, so as to guide the oil fumes along the wall to the smoke inlet 12, thereby optimizing the oil fume extraction effect while reducing the possibility of turbulence.
[0050] A second aspect of this application provides a range hood, including the aforementioned smoke extraction structure.
[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A smoking structure, characterized by, include The box body (10) has a smoke chamber (11) and a smoke inlet (12) is provided on the bottom wall of the smoke chamber (11). A smoke baffle (20), hinged to the housing (10), has a closed state and an open state. In the closed state, the smoke baffle (20) is parallel to the surface of the housing (10) where the smoke cage (11) is located, and an annular gap is formed between the smoke baffle (20) and the inner wall of the smoke cage (11). In the open state, the smoke baffle (20) is at least partially located outside the smoke cage (11); and A drive assembly (30) is disposed inside the housing (10) and its movable end is hinged to the smoke baffle (20) for driving the opening and closing of the smoke baffle (20).
2. The smoking structure of claim 1, wherein, In the closed state, the gap width between the smoke baffle (20) and the inner wall of the smoke chamber (11) is less than or equal to 20 mm.
3. The smoking structure of claim 1, wherein, The opening edge of the inner wall of the smoke chamber (11) is chamfered.
4. The smoking structure according to claim 2, characterized in that, In the closed state, the edges of the two sides of the smoke baffle (20) near and away from the smoking port (12) are chamfered.
5. The smoking structure according to claim 2, characterized in that, The smoking structure also includes an oil cup (40), which is detachably fixed to the bottom of the box (10), and one side surface of the oil cup (40) is flush with the surface of the box (10) where the smoke chamber (11) is located.
6. The smoking structure according to claim 5, characterized in that, The oil cup (40) is fixed with a guide part (41), which protrudes between the bottom end of the smoke baffle (20) and the lower surface of the smoke chamber (11) to form an oil stain channel communicating with the inside of the oil cup (40) between the guide part (41) and the lower surface of the smoke chamber (11).
7. The smoking structure according to claim 1, characterized in that, The smoke chamber (11) includes a clearance chamber (111) and a smoking chamber (112) that are interconnected. The smoking port (12) is opened on the bottom wall of the smoking chamber (112). In the closed state, the projection of the smoking port (12) along its own orientation direction is completely located within the smoke baffle (20).
8. The smoking structure according to claim 7, characterized in that, The depth of the smoking chamber (112) gradually increases from bottom to top.
9. The smoking structure according to claim 7, characterized in that, The inner wall of the relief cavity (111) is designed to mimic the movement trajectory of the end of the smoke baffle (20). During the opening and closing of the smoke baffle (20), the gap distance between the end of the smoke baffle (20) and the inner wall of the relief cavity (111) remains unchanged.
10. A range hood, characterized in that, Includes the smoking structure as described in any one of claims 1 to 9.