Range hood

Abstract

The present application relates to the technical field of range hood, and particularly relates to a range hood, which aims to solve the problem that the oil circuit structure of the existing range hood cannot be adapted to the multi-stage movement mechanism, thus leading to easy oil leakage. The range hood provided by the present application comprises a main box, a smoke collecting cavity which is arranged in a manner capable of lifting relative to the main box, the smoke collecting cavity being formed with a top suction port, a side suction cavity which is arranged in the smoke collecting cavity or the main box in a manner capable of lifting relative to the smoke collecting cavity, the side suction cavity being formed with a side suction port facing the side of the cooking appliance, the side suction cavity opening or closing the side suction port in a manner of lifting relative to the smoke collecting cavity, and two side walls of the smoke collecting cavity are respectively provided with side reinforcing beams, the bottom of the side reinforcing beam is provided with a U-shaped groove, the U-shaped groove is located directly below the side wall of the main box and the side wall of the smoke collecting cavity and is inclined towards the back side of the smoke collecting cavity, and is used for receiving condensed oil. The range hood of the present application solves the problem that the smoke collecting range of the existing range hood is limited, and can avoid oil stains from dropping at the same time by arranging a special oil circuit structure.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and specifically provides a range hood. Background Technology

[0002] Over long-term use, range hoods accumulate a large amount of condensed grease inside. How to effectively collect this condensed grease to prevent it from dripping and contaminating the cooktop is a persistent concern in the industry. Current range hoods typically have an grease cup at the bottom of the unit, using an oil-guiding structure to direct the condensed grease adhering to the inner walls to the cup. However, with the increasing complexity of range hood structures, especially in the gaps between the side walls of the smoke collection chamber and the main casing, and between moving and stationary parts, condensed grease easily accumulates due to airflow disturbances and temperature variations. If this condensed grease in these locations is not effectively collected and guided, it often drips directly into the cooking area along the gaps in the side walls, severely impacting the user experience.

[0003] To address the aforementioned issues, existing oil guiding structures typically involve setting independent oil guiding grooves or oil collecting trays at the bottom of the smoke collection chamber or on the inner side of the panel. These designs are mostly suitable for traditional range hoods with relatively fixed structures. However, for range hoods with multi-stage internal motion mechanisms, traditional independent oil guiding components are difficult to install effectively and operate stably for a long time in such dynamic fit gaps, making the oil circuit structure for this type of range hood a design blind spot. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the existing oil circuit structure of range hoods cannot be adapted to multi-stage motion mechanisms, which leads to easy oil leakage.

[0005] This invention provides a range hood, the range hood comprising:

[0006] The main housing contains a fan.

[0007] The smoke collection chamber is configured to be able to rise and fall relative to the main box, and the smoke collection chamber has a top suction port;

[0008] A side suction cavity is provided in the smoke collection cavity or the main box in a manner that allows it to be raised and lowered relative to the smoke collection cavity. The side suction cavity forms a side suction port facing the stove side. The side suction cavity opens or closes the side suction port by raising and lowering it relative to the smoke collection cavity.

[0009] The smoke collection chamber has side reinforcing beams on the inner sides of its two side walls at both ends along its length. The bottom of the side reinforcing beams has a U-shaped groove formed by folding towards the side wall of the main box. The U-shaped groove is located directly below the side wall of the main box and the side wall of the smoke collection chamber and is inclined towards the back side of the smoke collection chamber, and is used to receive the condensed oil dripping from above.

[0010] In some feasible embodiments of the above-mentioned range hood, the smoke collection chamber includes a smoke collection hood facing the cooking area, and a central reinforcing beam is also provided in the smoke collection chamber. The central reinforcing beam connects two of the side reinforcing beams. One end of the U-shaped groove extends and approaches the central reinforcing beam so as to guide the condensed oil received by the U-shaped groove to the smoke collection hood located below the central reinforcing beam through the central reinforcing beam.

[0011] In some feasible embodiments of the above-mentioned range hood, the smoke collection chamber further includes an annular oil collection groove arranged around the side suction chamber. The condensed oil collected by the smoke hood can be guided into the annular oil collection groove. The annular oil collection groove is connected to the oil cup located at the bottom of the side suction chamber on the back of the side suction chamber.

[0012] In some feasible embodiments of the above-mentioned range hood, at least one first oil guide groove is provided at the edge position of the smoke collection hood near the middle reinforcing beam, so as to guide the condensed oil to the annular oil collection groove through the first oil guide groove.

[0013] In some feasible embodiments of the above-mentioned range hood, the back edge of the annular oil collecting groove is provided with an oil outlet protruding toward the back wall of the side suction cavity, and the back wall of the side suction cavity is recessed inward to form a second oil guide groove for accommodating the oil outlet. The second oil guide groove connects the annular oil collecting groove and the oil cup.

[0014] In some feasible embodiments of the above-mentioned range hood, the second oil guide groove extends in a vertical direction.

[0015] In some feasible embodiments of the above-mentioned range hood, there are multiple second oil guide grooves.

[0016] In some feasible embodiments of the above-mentioned range hood, an oil guide is also provided at the oil outlet.

[0017] In some feasible embodiments of the above-mentioned range hood, the oil guiding component is a rubber oil guiding component.

[0018] In some feasible embodiments of the above-mentioned range hood, the range hood further includes:

[0019] A smoke-collecting plate is rotatably mounted at the top suction port to open and close the top suction port.

[0020] The beneficial effects of this invention are:

[0021] This invention constructs a dual-stage lifting mechanism by setting up a smoke collection chamber that can be raised and lowered relative to the main chamber and a side suction chamber that can be raised and lowered relative to the smoke collection chamber. This allows the side suction chamber to extend or retract further based on the movement of the smoke collection chamber, achieving adaptive adjustment of the shape and position of the smoke inlet to meet the smoke extraction needs of different cooking scenarios. At the same time, by setting side reinforcing beams on the inner side of the side walls at both ends of the length direction of the smoke collection chamber, and forming a U-shaped groove at the bottom of the side beam that folds towards the side wall of the main chamber, is located directly below the side walls of the main chamber and the smoke collection chamber, and tilts towards the back, the side beam, which was originally only used for structural reinforcement, also has the functions of receiving and guiding condensed oil. This allows the invention to integrate the three functions of structural reinforcement, receiving and guiding condensed oil into a single side reinforcing beam without adding an independent oil collection component. This not only solves the problem of condensed oil dripping and contamination inside the range hood with multi-stage motion mechanism, but also achieves flexible adjustment of the smoke extraction posture, significantly improving the overall performance of the machine. Attached Figure Description

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a structural schematic diagram of the range hood of the present invention in its stored state;

[0024] Figure 2 This is a schematic diagram of the range hood of the present invention in its working state;

[0025] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0026] Figure 4 This is a schematic diagram of the internal structure of the range hood of the present invention;

[0027] Figure 5 This is a schematic diagram of the transmission device and guide device of the present invention;

[0028] Figure 6 This is a cross-sectional schematic diagram of the transmission device of the present invention;

[0029] Figure 7 This is a schematic diagram of the guiding device of the present invention;

[0030] Figure 8 This is a schematic diagram of the flip transmission mechanism of the present invention when the range hood is in the storage state;

[0031] Figure 9 This is a schematic diagram of the flip transmission mechanism of the present invention when the range hood is in working condition;

[0032] Figure 10 yes Figure 9 A diagram from another perspective;

[0033] Figure 11 This is a schematic diagram of the internal structure of the smoke collection chamber of the present invention;

[0034] Figure 12 This is a schematic diagram of the internal structure of the smoke collection chamber of the present invention;

[0035] Figure 13 yes Figure 12 A cross-sectional schematic diagram;

[0036] Figure 14 This is a schematic diagram showing the connection between the smoke collection panel and the light assembly;

[0037] Figure 15 This is a schematic diagram of the optical component;

[0038] Figure 16 This is a schematic diagram of the oil circuit structure of the present invention from a first-view perspective;

[0039] Figure 17 This is a schematic diagram of the oil circuit structure of the present invention from a second perspective;

[0040] Figure 18 This is a schematic diagram of the oil circuit structure of the present invention from a top view.

[0041] Figure 19 This is a schematic diagram of the structure of the smoke hood of the present invention;

[0042] Figure 20 This is a schematic diagram of the structure of the oil guide component of the present invention;

[0043] Figure 21 yes Figure 20 Exploded view;

[0044] Figure 22 This is a schematic diagram of the smoke path structure of the present invention;

[0045] Figure 23 This is a schematic diagram of the gesture light module of the present invention from a first-view perspective;

[0046] Figure 24 This is a schematic diagram of the gesture light module of the present invention from a second perspective;

[0047] Figure 25 This is a schematic diagram of the gesture light module of the present invention from a third-person perspective;

[0048] Figure 26 This is a schematic diagram of the protective components and smoke hood of the present invention;

[0049] Figure 27 yes Figure 26 An explosion diagram;

[0050] Figure 28This is a schematic diagram of the image recognition module of the present invention installed in a smoke hood;

[0051] Figure 29 This is a schematic diagram of the image recognition module of the present invention connected to the lamp bracket;

[0052] Figure 30 yes Figure 29 An explosion diagram.

[0053] List of reference numerals in the attached diagram:

[0054] 1. Main housing; 11. Fan; 111. Main smoke inlet; 112. Auxiliary smoke inlet; 12. Main housing back panel; 2. Smoke collection chamber; 201. Top suction port; 202. Front panel; 203. Side reinforcing beam; 2031. U-shaped groove; 204. Central reinforcing beam; 205. Smoke hood; 2051. Lighting installation position; 2052. Through hole; 2053. First oil guide groove; 206. Annular oil collection groove; 2061. Oil outlet; 207. Protective plate; 2071. Inspection port; 208. Lamp bracket; 209. Protective cover; 2091. Module protection part; 2092. Lighting protection part; 2 10. Crossbeam; 211. Crossbeam connector; 212. Oil guide; 2121. Oil guide sheet; 2122. Connecting component; 213. Mounting bracket; 214. Front panel frame; 215. Linkage bracket; 3. Side suction chamber; 31. Side suction port; 311. First side suction port; 312. Second side suction port; 32. Oil cup; 33. Back wall of side suction chamber; 331. Second oil guide groove; 4. Smoke gathering plate assembly; 41. Linkage mechanism; 42. Smoke gathering plate bracket; 43. Smoke gathering plate; 431. Arc surface; 5. Light assembly; 51. Trim strip; 511. Mounting groove; 5111. First mounting position; 5112. Second mounting position; 512. Limiting protrusion; 513. Gap; 514. Connection part; 515. Inclined surface; 52. Strip light; 6. Gesture light module; 61. Box body; 611. Box body; 612. Box cover; 613. Buckle; 614. Installation space; 62. Indicator light; 63. Gesture module; 7. Image recognition module; 71. Module bracket; 72. Module body; 8. Guide device; 81. Rear outer angle iron; 82. Rear middle angle iron; 83. Rear inner angle iron; 84. Front outer angle iron; 85. Front inner angle iron; 86. First slide rail; 87. Second slide rail; 88. 9. Third slide rail; 9. Transmission device; 901. Limit nut; 902. Limit bearing; 903. Bearing seat; 904. Inner lead screw; 905. Inner nut seat; 906. Inner lead screw nut; 907. Connecting bearing; 908. Inner lead screw sleeve; 909. Outer lead screw; 910. First connecting piece; 911. Second connecting piece; 912. Outer lead screw nut; 913. Outer lead screw sleeve; 914. Third connecting piece; 10. Tilting transmission mechanism; 101. First connecting rod; 102. Second connecting rod; 103. Third connecting rod; 104. Fourth connecting rod; 105. Fifth connecting rod; 106. Swing arm. Detailed Implementation

[0055] The range hood of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0056] like Figures 1 to 30As shown, the range hood provided by this invention is based on a three-tiered structure comprising a main chamber 1, a smoke collection chamber 2, and a side suction chamber 3. It also incorporates a two-tiered nested lifting mechanism where the smoke collection chamber 2 moves relative to the main chamber 1, and the side suction chamber 3 further moves relative to the smoke collection chamber 2. Furthermore, it integrates a flip-up smoke collection plate 43. This design overcomes the limitations of traditional two-tiered structures (containing only the main chamber and smoke collection chamber, or only the main chamber and side suction chamber) and single-tiered lifting mechanisms (where the smoke collection chamber moves relative to the main chamber, or the side suction chamber moves relative to the main chamber). This achieves dynamic spatial coverage of the smoke inlet, thus striking a structural balance between compact design and efficient smoke extraction. The following section will elaborate on the specific implementation of this core architecture.

[0057] Specifically, such as Figure 1 , Figure 2 and Figure 22 As shown, the main housing 1 serves as the installation foundation and power core of the entire unit. A fan 11 is fixedly installed inside, providing power for the fume extraction. The main housing 1 can be fixed to the kitchen wall via a rear bracket, ensuring the stability of the entire unit's installation. The smoke collection chamber 2 is designed to be adjustable in height relative to the main housing 1, specifically through a lifting drive mechanism that achieves a sliding connection with the main housing 1.

[0058] like Figure 3 , Figure 4 and Figure 22 As shown, a top suction port 201 is formed on the side of the smoke collection chamber 2 facing the stove. This top suction port 201 extends along the length of the smoke collection chamber 2 to form a strip-shaped opening. Specifically, it is constructed by a smoke-collecting hood 205 inside the smoke collection chamber 2 and a support frame surrounding the side suction chamber 3. The top suction port 201 is tilted upwards towards the front panel 202, and it works in conjunction with the smoke-collecting hood 205 and the smoke-collecting plate 43 to collect the rising fumes. The side suction chamber 3 is mounted inside the smoke collection chamber 2 in a way that allows it to be raised and lowered relative to the smoke collection chamber 2, freely switching between a retracted and extended state. The side suction chamber 3 has a side suction port 31.

[0059] The range hood of the present invention also includes a drive system, which is used to drive the smoke collection chamber 2 and the side suction chamber 3 to rise and fall synchronously, and to drive the smoke gathering plate 43 to rotate. Specifically, the drive system includes a lifting drive mechanism and a smoke gathering plate drive mechanism. The lifting drive mechanism is used to drive the smoke collection chamber 2 and the side suction chamber 3 to rise and fall synchronously, and the smoke gathering plate drive mechanism is used to independently drive the smoke gathering plate to rotate to open and close the top suction port. In addition, the drive system may also include a lifting drive mechanism and a rotation transmission mechanism, the rotation transmission mechanism enabling the smoke gathering plate to rotate under the driving motion of the rising and falling movement of the smoke collection chamber.

[0060] like Figures 5 to 7As shown, to achieve a two-stage lifting function, this embodiment provides a lifting drive mechanism. This lifting drive mechanism includes a drive device (not shown), a transmission device 9, and a guide device 8. The drive device includes a drive motor (not shown), the output shaft of which is connected to the input end of the transmission device 9. The output end of the transmission device 9 is connected to the smoke collection chamber 2 and the side suction chamber 3, respectively. In this embodiment, the drive motor is fixedly connected to the inside of the main box back plate 12 or the inside of the top plate of the main box 1. The transmission device 9 adopts a double-stage screw-nut mechanism to distribute and transmit the power of a single motor to the smoke collection chamber 2 and the side suction chamber 3.

[0061] Specifically, such as Figure 5 and Figure 6 As shown, the transmission device 9 includes a primary screw and nut mechanism and a secondary screw and nut mechanism. The primary screw and nut mechanism connects the main housing 1 and the smoke collection chamber 2, and the secondary screw and nut mechanism connects the primary screw and nut mechanism and the side suction chamber 3. The primary screw and nut mechanism includes an inner screw 904, an inner screw nut 906, and an inner screw sleeve 908. The inner screw 904 is rotatably connected to the output shaft of the drive motor via a limit nut 901, a limit bearing 902, and a bearing seat 903. If the output shaft of the drive motor is horizontally positioned, power can also be converted into rotation of the inner screw 904 (vertically positioned) via a bevel gear transmission mechanism.

[0062] like Figure 6 As shown, an inner screw nut 906 is screwed onto the outer side of the inner screw 904. The inner screw nut 906 is fixedly installed inside the inner nut seat 905. The inner nut seat 905 is fixedly connected to the top of the inner screw sleeve 908. The inner screw sleeve 908 is fixedly connected to the first connecting member 910 (interference fit). The first connecting member 910 and the second connecting member 911 are fixedly connected by fasteners. The second connecting member 911 is fixedly connected to the crossbeam connecting member 211 by fasteners. The crossbeam connecting member 211 is fastened to the crossbeam, thereby realizing the fixed connection between the inner screw sleeve 908 and the crossbeam. In this way, when the drive motor starts, it can drive the inner screw 904 to rotate around its axis. Since the inner screw nut 906 cooperates with the inner screw 904, and the inner screw nut 906 is relatively fixed on the inner screw sleeve 908, and the inner screw sleeve 908 is relatively fixed on the crossbeam, the inner screw nut 906 can move up and down in the vertical direction under the drive of the inner screw 904, thereby driving the smoke collection chamber to rise and fall relative to the main box.

[0063] Continue to refer to Figure 5 and Figure 6 The secondary lead screw and nut mechanism includes an external lead screw 909, an external lead screw nut 912, and an external lead screw sleeve 913. Specifically, as shown... Figure 6As shown, the outer lead screw 909 has a hollow structure and is sleeved on the outside of the inner lead screw 904. There is a gap between them, and they are connected by a spline, so that when the inner lead screw 904 rotates, it drives the outer lead screw 909 to rotate synchronously. The top of the outer lead screw 909 is rotatably connected to the inner wall of the inner lead screw sleeve 908 through a connecting bearing 907. When the inner lead screw sleeve 908 is fixed, when the inner lead screw 904 drives the outer lead screw 909 to rotate, the outer lead screw 909 can rotate relative to the inner lead screw sleeve 908. An outer screw nut 912 is connected between the outer screw sleeve 913 and the outer screw 909. The outer screw nut 912 and the outer screw sleeve 913 are fixedly connected and cannot rotate relative to each other. The outer screw sleeve 913 is fixedly connected to the back wall 33 of the side suction cavity through the third connector 914. The outer screw nut 912 is screwed to the outer periphery of the outer screw 909. When the outer screw 909 rotates, it drives the outer screw nut 912 to move up and down along its axis, which in turn drives the outer screw sleeve 913 to move up and down in the vertical direction relative to the inner screw sleeve 908. This makes the lifting speed of the side suction cavity 3 greater than that of the smoke collection cavity 2, so that it can extend from or retract into the smoke collection cavity 2.

[0064] Taking the side suction cavity 3 extending from the smoke collection cavity 2 as an example, since the outer screw nut 912 is relatively fixed to the side suction cavity 3 and the inner screw nut 906 is relatively fixed to the smoke collection cavity, while the outer screw nut 912 moves downward relative to the inner screw nut 906, the inner screw nut 906 itself moves downward relative to the inner screw nut 904. Therefore, the outer screw nut 912 superimposes its own movement relative to the inner screw nut 906 and the movement of the inner screw nut 906 itself, realizing the superposition of movements. This allows the side suction cavity 3 to further descend relative to the smoke collection cavity 2 (achieved through the first-stage screw nut mechanism) on the basis of the descent of the smoke collection cavity 2 relative to the main box. As a result, the rising and falling of the side suction cavity 3 is synchronized with the rising and falling of the smoke collection cavity 2, and the movement speed of the side suction cavity 3 is greater than the movement speed of the smoke collection cavity, ensuring that the side suction cavity 3 can extend from the smoke collection cavity 2.

[0065] It should be noted that the relative stroke of the smoke collection chamber and the side suction chamber can be adjusted by selecting the pitch of the external lead screw 909 and the internal lead screw 904. Furthermore, due to the lifting drive mechanism, there is a relative movement relationship between the side suction chamber and both the main box 1 and the smoke collection chamber 2. Therefore, it can be understood that the side suction chamber 3 is directly located in the main box 1 (the side suction chamber is connected to the main box through the lifting drive mechanism, and moves relative to the smoke collection chamber while also moving relative to the main box), or it can be understood that the side suction chamber 3 is located in the smoke collection chamber 2 (the side suction chamber is inside the smoke collection chamber).

[0066] like Figure 4 , Figure 5 and Figure 7 As shown, the guide device 8 includes a front angle iron assembly and a rear angle iron assembly. The rear angle iron assembly is a three-layer nested structure consisting of a rear outer angle iron 81, a rear middle angle iron 82, a rear inner angle iron 83, and corresponding slide rails. Figure 7 As shown, the rear outer angle iron 81 is fixedly connected to the two corners of the inner side of the main box 1 near the back plate, and the rear middle angle iron 82 is connected to the rear outer angle iron 81 by a first slide rail 86. To improve the smoothness of operation, a first slide rail 86 extending vertically is provided on each of the two plates of the rear outer angle iron 81. The rear middle angle iron 82 is connected to the two side reinforcing beams 203 of the smoke collection chamber 2 and the crossbeam 210 located at the back, and the back crossbeam 210 extends along the entire length of the smoke collection chamber 2. The rear middle angle iron 82 extends into the interior of the smoke collection chamber 2, and the rear inner angle iron 83 is connected to the rear middle angle iron 82 by a second slide rail 87, which extends vertically, and each rear middle angle iron 82 is connected to a rear inner angle iron 83 by two second slide rails 87. The bottom of the rear inner angle iron 83 is fixedly connected to the internal frame of the side suction chamber 3. To ensure that the two sides of the side suction chamber 3 move synchronously during the lifting process, the two rear inner angle irons 83 are also connected by a horizontal angle iron connector (not shown).

[0067] To further improve lifting stability, a front angle iron assembly connects the main housing 1 and the smoke collection chamber 2. Specifically, the front angle iron assembly includes a front outer angle iron 84, a front inner angle iron 85, and a third slide rail 88 connecting the front outer angle iron 84 and the front inner angle iron 85. The front outer angle iron 84 extends vertically and is fixedly connected to the two corners at the front of the main housing 1, while the front inner angle iron 85 is fixedly connected to the two side reinforcing beams 203 of the smoke collection chamber 2. The front outer angle iron 84 and the front inner angle iron 85 are slidably connected by the third slide rail 88.

[0068] Throughout the process, the three-layer nested structure of the front and rear angle iron components works together to precisely guide the movement trajectory of the two-stage lifting components, ensuring the rigidity of the structure and the stability of operation under complex motion conditions.

[0069] The aforementioned lifting and driving mechanism enables the side suction chamber 3 to switch between two states: "retracted into the smoke collection chamber 2" and "extended from the smoke collection chamber 2". When the side suction chamber 3 is retracted into the smoke collection chamber 2 under the action of the lifting and driving mechanism (i.e., the retracted state), its side suction port 31 is blocked by the internal structure of the smoke collection chamber 2, thus closing the side suction port 31. When the side suction chamber 3 extends downwards from inside the smoke collection chamber 2 under the action of the lifting and driving mechanism (i.e., the extended state), the side suction port 31 is fully exposed to the external environment, thus opening.

[0070] Specifically, such as Figure 1As shown, when the range hood is in standby or retracted state, the side suction chamber 3 is completely retracted into the smoke collection chamber 2, with the overall structure closely attached to the main box 1, maximizing space saving and maintaining the overall aesthetics of the kitchen. When the range hood is started and enters working mode, the lifting drive mechanism drives the smoke collection chamber 2 and the side suction chamber 3 to descend synchronously relative to the main box 1. During the descent, because the descent speed of the side suction chamber 3 is greater than that of the smoke collection chamber 2, the side suction chamber 3 gradually extends out from inside the smoke collection chamber 2 until it reaches a predetermined height close to the stovetop, forming a low-position side suction area. The extended state of the side suction chamber 3 is as follows: Figure 2 As shown in the image. This tiered lifting design solves the problem of limited adjustment range and inability to balance high-level storage and low-level strong suction in traditional single-stage lifting range hoods. It can adaptively adjust the height and combination of the smoke inlet according to the actual concentration and diffusion stage of oil fumes.

[0071] To achieve the linkage between the smoke collecting plate and the smoke gathering chamber, this embodiment provides a flipping transmission mechanism. For example... Figures 8 to 10 As shown, the tilting transmission mechanism 10 connects the main box 1, the smoke collection chamber 2, and the smoke gathering plate 43. It can tilt under the influence of the lifting and lowering movement of the smoke collection chamber 2, which is driven by a lifting drive mechanism. Figure 8 and Figure 9 As shown, the tilting transmission mechanism 10 includes a first link 101, a second link 102, a third link 103, a fourth link 105, and a swing arm 106. The first end of the first link 101 is pivotally connected to the side wall of the main housing 1, and the second end is pivotally connected to the first end of the second link 102. The second end of the second link 102 is pivotally connected to the side reinforcing beam of the smoke collection chamber 2. The first end of the third link 103 is pivotally connected to the middle position of the second link 102. The second end of the third link 103 is pivotally connected to the first end of the fourth link 104. The second end of the fourth link 104 is pivotally connected to the first end of the fifth link 105. The second end of the fifth link 105 is pivotally connected to the middle position of the swing arm 106. Figure 8 and Figure 10 As shown, the swing arm 106 has a semi-circular arc structure, with its first end pivotally connected to the bracket below the front panel and its second end fixedly connected to the smoke-collecting plate bracket. Furthermore, as... Figure 13 As shown, the smoke hood has through holes to avoid the fifth link 105 and the swing arm 106. Through this flipping transmission mechanism 10, the smoke collecting plate 43 can be flipped to open and close the top suction port while the smoke collecting chamber is raised and lowered, achieving the effect of single power driving multiple components to move in coordination.

[0072] Based on the aforementioned two-stage lifting mechanism and dual-inlet layout, to optimize the distribution of smoke airflow and enhance the fume capture capability in the core area, this embodiment further refines the design of the air inlet cross-sectional area of ​​the side inlet 31 and the top inlet 201, while also detailing the layout of the side inlet 31. Specifically, the air inlet cross-sectional area of ​​the side inlet 31 is set to be larger than that of the top inlet 201. This design aims to strengthen the dominant role of the lateral smoke path by actively distributing the smoke airflow. Given that the side inlet 31 is closer to the source of the smoke, increasing its air inlet area can directly enhance the capture capability of the initial smoke, preventing the smoke from escaping in the early stages of its rise. The top inlet 201, as a supplementary channel, is mainly responsible for collecting the residual smoke that has risen to a high position. It can achieve effective capture without an excessively large air inlet area. This differentiated airflow configuration based on spatial location effectively solves the problem of insufficient suction in the core pollution area caused by the "average effort" of each smoke inlet in traditional designs. Therefore, in practical applications, the side suction port 31 serves as the main smoke inlet, and the top suction port 201 serves as the auxiliary smoke inlet.

[0073] Preferably, the ratio of the air inlet cross-sectional area of ​​the side suction port 31 to the air inlet cross-sectional area of ​​the top suction port 201 is set to 7:3. This ratio, verified through fluid simulation and experiments, enables optimized airflow distribution: approximately 70% of the airflow is concentrated at the side suction port 31 near the stove, forming a strong main adsorption flow field to quickly capture the initial fumes generated by the stove; the remaining 30% of the airflow is distributed to the top suction port 201, forming an auxiliary capture flow field to effectively collect the rising and diffusing residual fumes. This specific ratio design overcomes the limitations of empirical allocation and achieves a better balance between suction and exhaust efficiency and energy consumption under various typical cooking conditions such as stir-frying and stewing.

[0074] Furthermore, considering that household stoves are generally equipped with dual burners, and there are two common modes: single burner working independently and both burners working simultaneously, this embodiment further optimizes the structure of the side suction port 31. For example... Figure 3 As shown, the side suction ports 31 are specifically configured as a first side suction port 311 and a second side suction port 312 symmetrically arranged along the length of the side suction cavity 3, respectively precisely corresponding to the positions of the left and right burners. This layout forms two clearly oriented low-pressure collection points, which on the one hand effectively avoids the problem of uneven suction force on the left and right sides that may occur when using a single wide side suction port 31, significantly reduces the probability of lateral escape of oil fumes when cooking simultaneously on both burners, and improves the overall collection reliability; on the other hand, when cooking with only one burner, more targeted and precise suction and exhaust can also be achieved through the corresponding side suction port 31.

[0075] like Figure 1 , Figure 3 , Figures 11 to 13As shown, the smoke-collecting plate 43, which is used in conjunction with the top suction port 201, is rotatably mounted at the top suction port 201. The smoke-collecting plate 43 is connected to the inner wall of the smoke collection chamber 2 via a linkage mechanism 41. When the range hood is in standby mode, the smoke-collecting plate 43 is closed, blocking the top suction port 201 to ensure the range hood has a flat appearance. When the range hood is working, it can be flipped open as needed or according to a preset program, exposing the top suction port 201 to work with the side suction port 31 to achieve dual suction and exhaust. At the same time, it works with the smoke-collecting hood 205 located in the smoke collection chamber 2 to form a negative pressure zone to promote the intake of fumes.

[0076] To achieve independent control of the opening and closing action of the smoke gathering plate 43 and improve the intelligence level of the system, the smoke gathering plate 43 in this embodiment is connected to a smoke gathering plate driving mechanism. The smoke gathering plate driving mechanism is connected to the smoke gathering plate 43 through a linkage mechanism 41 and is used to drive the smoke gathering plate 43 to open and close independently without being affected by the two-stage lifting mechanism.

[0077] Specifically, such as Figures 11 to 13 As shown, the smoke collecting plate driving mechanism can be implemented using a micro stepper motor in conjunction with a linkage mechanism. The stepper motor is fixedly installed on the inner wall of the smoke collecting chamber 2. One end of the linkage mechanism 41 is connected to the motor output shaft, and the other end is connected to the linkage bracket 215, which is fixedly connected to the inner wall of the smoke collecting chamber. The linkage mechanism 41 includes a driving rod connected to the motor and a driven rod connected to the smoke collecting plate bracket 42. The driving rod and the driven rod are hinged. The rotation center of the smoke collecting plate bracket 42 after being connected to the driven rod has a certain distance from the rotation center of the smoke collecting plate 43 itself. Figure 13 As shown in the figure. In this embodiment, the smoke gathering plate assembly 4 includes a linkage mechanism 41, a smoke gathering plate bracket 42, and a smoke gathering plate 43.

[0078] The motor drives the linkage mechanism to rotate, thereby rotating the smoke collection plate 43. The drive mechanism can also be equipped with a position sensor to achieve precise control of the opening and closing angle. This design transforms the smoke collection plate 43 from a passive structural component into an actively adjustable airflow guiding component, enabling it to open and close precisely according to the range hood's working mode (standby, strong suction, automatic). More importantly, the state of the smoke collection plate 43 can be programmed to be linked with the lifting mechanism and the speed of the fan 11, constructing a smoke collection chamber shape adapted to the cooking scenario. This achieves intelligent optimization of smoke extraction performance at the system level. For example, in strong suction mode, the smoke collection plate 43 is fully opened to maximize the air intake area, and together with the extension of the side suction chamber 3, it forms an all-round suction and exhaust system.

[0079] A light component 5 is integrated on the side of the smoke collection plate 43 near the smoke collection chamber 2, projecting light towards the other side of the smoke collection plate. This design aims to solve the problems of traditional range hoods where top-mounted lighting is easily blocked by users or the machine body, the light path is singular and only provides static functional lighting, and there is a lack of interaction with the dynamic structure of the product. By linking the ambient lighting with the movable structure, a harmonious unity of lighting, decoration, and dynamic visual effects is achieved.

[0080] Specifically, such as Figures 11 to 15 As shown, a light assembly 5 is provided on the side of the smoke collection plate 43 near the smoke collection chamber 2. The light assembly 5 emits light from the side of the smoke collection plate where it is installed and projects light towards the other side of the smoke collection plate. The light assembly 5 includes a decorative strip 51 and a strip light 52 installed in the decorative strip. The strip light 52 projects light towards the other side along the direction through the smoke collection plate (i.e., the direction of the surface of the smoke collection plate).

[0081] like Figure 15 As shown, the strip light 52 is arranged along the length of the smoke-collecting plate 43, and the length of the strip light is approximately the same as the length of the smoke-collecting plate, so that the light is evenly distributed within the smoke-collecting plate, presenting a uniform lighting effect. The decorative strip is fixedly clipped onto the smoke-collecting plate, surrounding the front and rear sides of the strip light 52. The front side of the strip light refers to the side facing the cooking area when the smoke-collecting plate is closed, and the rear side of the strip light is the side facing away from the cooking area in the corresponding state. Figure 15 As shown, both sides of the trim strip extend to the smoke-collecting plate to form a light-shielding surface, allowing the light emitted by the strip light 52 to be concentrated and illuminate the interior of the smoke-collecting plate. Specifically, a mounting groove 511 is formed on the side of the trim strip 51 facing the side. The two sidewalls of the mounting groove 511 respectively protrude inward to form limiting protrusions 512 and gaps 513, dividing the mounting groove 511 into a first mounting portion 5111 and a second mounting portion 5112. The strip light 52 is accommodated in the first mounting portion 5111, and the trim strip 51 is snapped to the side of the smoke-collecting plate 43 through the second mounting portion 5112, so that the strip light 52 can shine directly onto the end face of the side through the gap 513. The trim strip 51 is made of aluminum alloy, but other materials can also be used. Furthermore, the portion of the second mounting portion 5112 located on the back side of the smoke-collecting plate also extends to form a connecting portion 514, which is used to connect with the smoke-collecting plate bracket 42 connected to the smoke-collecting plate 43.

[0082] Continue to refer to Figure 15 To avoid interference with other components and to improve light efficiency, the side of the trim 51 facing away from the mounting groove has an inclined surface 515. In addition, to prevent the strip light 52 from shifting, at least one end of the trim 51 is connected to a sealing member (not shown).

[0083] In this invention, the strip light 52 is not used as a traditional floodlight source, but as an edge light guide source. It is directly attached to and illuminates the end face of a specific side of the smoke-collecting plate 43, guiding the light into the interior of the smoke-collecting plate 43, which is typically made of glass. The end faces of the remaining sides of the smoke-collecting plate 43 (i.e., the sides without light sources) are all arc surfaces 431, not simple straight edges, but have undergone a unique arc AG (Anti-Glare) process. This design combines the principles of single-sided light injection and three-sided edge light scattering: the light is transmitted forward through total internal reflection inside the smoke-collecting plate 43. When it reaches the arc-shaped side roughened by the AG process, the total internal reflection condition is broken, and the light is scattered evenly and softly. Furthermore, it can create gradual and flowing light and shadow changes during the rotation of the smoke-collecting plate 43, enhancing the sense of atmosphere and layering, thus forming a unique and visually appealing optical light guide system. The end face of the side where the light component is installed can be an arc surface or a flat surface.

[0084] It should be noted that although the range hood adapted to the optical component in this embodiment is a range hood with a two-stage lifting mechanism, it is understood that this is not a limitation. The optical component can also be installed on a fixed range hood or a range hood with only a single-stage lifting mechanism, as long as the range hood is equipped with a flip-up smoke collection plate.

[0085] In addition to adding a light effect system, this embodiment of the invention also improves the oil fume collection structure. Because this invention employs a two-stage lifting mechanism, there is relative movement between the main chamber 1 and the smoke collection chamber 2, and also relative movement between the smoke collection chamber 2 and the side suction chamber 3, making the traditional fixed oil receiving structure unsuitable. To achieve efficient collection and convenient cleaning of condensed oil, this embodiment designs a dedicated oil circuit structure. This structure, combined with the reinforced structure of the smoke collection chamber 2, ensures both structural strength and systematic collection of condensed oil.

[0086] Specifically, such as Figures 16 to 21 As shown, side reinforcing beams 203 are respectively provided on the inner side of the side walls at both ends of the smoke collection chamber 2 along its length. Each side reinforcing beam 203 is made of high-strength steel plate by stamping, which not only enhances the structural strength of the smoke collection chamber 2 and prevents deformation during lifting, but also integrates the function of collecting condensed oil. Its bottom has a U-shaped groove 2031 formed by folding towards the side wall of the main box 1. The U-shaped groove 2031 extends along the width of the smoke collection chamber 2 and slopes downward towards the back side of the smoke collection chamber 2. It is located directly below the side walls of the main box 1 and the side walls of the smoke collection chamber 2, and can collect the condensed oil dripping from the side walls of the main box 1 and the side walls of the smoke collection chamber 2 in real time. Even if there is relative movement between the smoke collection chamber 2 and the main box 1, the condensed oil dripping by gravity will be completely collected by the U-shaped groove 2031 because it is located below them, and there will be no oil leakage problem. Furthermore, the sloping surface of the U-shaped groove 2031 guides the condensed oil to the side reinforcing beams 203 for further collection.

[0087] like Figure 17 As shown, the smoke collection chamber 2 is also provided with a central reinforcing beam 204, which is made of the same material as the side reinforcing beams 203. It is arranged horizontally and connects the two side reinforcing beams 203, which not only further enhances the overall strength of the smoke collection chamber 2, but also plays the role of collecting condensed oil. One end of the U-shaped groove 2031 extends and approaches the central reinforcing beam 204, so that the condensed oil received by the U-shaped groove 2031 is guided downward to the smoke collection hood 205 located below the central reinforcing beam 204 through the central reinforcing beam 204.

[0088] The structure of the smoke hood 205 is as follows Figure 19 As shown, it is formed by stamping sheet metal. A lighting mounting position 2051 is formed on the smoke hood 205 for mounting a lighting lamp. Multiple first oil guide grooves 2053 are provided near the edge of the central reinforcing beam 204 of the smoke hood 205. Specifically, as... Figure 19 As shown, the smoke hood 205 has several through holes 2052 punched on the edge near the central reinforcing beam 204, with their flanges facing upwards. A downwardly inclined first oil guide groove 2053 is formed between the flanges of adjacent through holes to guide the condensed oil to the annular oil collection groove 206 surrounding the side suction cavity 3.

[0089] like Figures 16 to 18 As shown, the condensed oil on the front and rear side walls of the main chamber 1 and the smoke collection chamber 2 first drips into the U-shaped groove 2031. Guided by the reinforcing beam 204, it further drips onto the smoke collection hood 205. Under the guidance of the first oil guide groove 2053, the smoke collection hood 205 guides the collected condensed oil to the annular oil collection groove 206 surrounding the side suction chamber 3. The annular oil collection groove 206 is formed on the frame located at the bottom of the smoke collection chamber 2. The structure of the annular oil collection groove 206 is as follows: Figure 17 and Figure 18 As shown, the annular oil collecting groove 206 is connected to the oil cup 32 located at the bottom of the side suction cavity 3 on the back side of the side suction cavity 3. Specifically, the back edge of the annular oil collecting groove 206 is provided with an oil outlet 2061 protruding towards the back wall 33 of the side suction cavity. The back wall 33 of the side suction cavity is recessed inward to form a second oil guide groove 331 for accommodating the oil outlet 2061. The second oil guide groove 331 extends vertically and connects the annular oil collecting groove 206 and the oil cup 32 to guide the condensed oil collected in the annular oil collecting groove 206 to the oil cup 32.

[0090] Furthermore, to ensure that the condensed oil flows smoothly from the oil outlet 2061 into the second oil guide groove 331, the oil outlet of this invention is also provided with an oil guide component 212. For example... Figure 18 , Figure 20 and Figure 21As shown, the oil guiding component 212 includes an oil guiding sheet 2121 and a connecting member 2122 for connecting the oil guiding sheet 2121 to the annular oil collecting groove 206. The oil guiding sheet 2121 is made of a flexible material and has a certain degree of flexibility, such as rubber or silicone. Its end has a serrated structure, and the gaps between the serrated structures can allow the condensed oil to penetrate downwards, thereby guiding the condensed oil in the annular oil collecting groove 206 smoothly into the oil cup 32 at the bottom of the side suction chamber 3.

[0091] The oil circuit structure provided by the present invention forms a systematic oil collection network through the coordinated cooperation of the side reinforcing beam 203 (with U-shaped groove 2031), the middle reinforcing beam 204, the annular oil collection groove 206 and the oil cup 32, realizing the full-link oil collection of the movable mechanism, ensuring the reliability of the oil circuit in complex lifting movements, and simplifying the cleaning and maintenance process.

[0092] like Figure 22 As shown, the fan 11, as the core power source for fume extraction, is structurally designed to be compatible with the overall extraction system. To reduce air resistance in the fume path and improve the operating efficiency of the fan 11 under different working conditions, the fan 11 used in this invention has a rearward-opening main smoke inlet 111 and a front-opening auxiliary smoke inlet 112, with the main smoke inlet 111 and the auxiliary smoke inlet 112 facing away from each other in the axial direction of the fan 11. Correspondingly, the smoke collection chamber 2 is constructed with a main smoke path and an auxiliary smoke path, achieving redundancy and optimized configuration of the smoke extraction channel. Among them, the main smoke path corresponds to the main smoke inlet 111, and the auxiliary smoke path corresponds to the auxiliary smoke inlet 112. The main smoke path is a vertically upward smoke path, and the auxiliary smoke path is a smoke path that deflects to the side. When the side suction port 31 and the top suction port 201 are opened simultaneously, the fumes enter through the top suction port 201 and the side suction port 31. Most of the fumes then enter the main smoke inlet 111 of the fan 11 via the main smoke path, achieving efficient extraction and discharge of a large amount of fumes. A schematic diagram of the main smoke path is shown below. Figure 22 As shown in the diagram. Simultaneously, a small portion of the oil fumes, under the suction of the fan 11, enters the auxiliary smoke inlet 112 via the auxiliary smoke path, as shown in the diagram. Figure 22 As shown in the diagram. This achieves dual-path smoke extraction and exhaust, improving smoke extraction efficiency and effectiveness, and effectively reducing internal oil condensation.

[0093] Understandably, when only the top suction port 201 or the side suction port 31 is open, most of the fumes are discharged through the main smoke path, and a small portion of the fumes are discharged through the auxiliary smoke path.

[0094] To further enhance user convenience while maintaining a clean and simple product appearance, this embodiment also includes a gesture light module 6. For example... Figure 1 , Figure 3 , Figure 16 , Figures 23 to 25As shown, the range hood includes a front panel 202 and a mounting bracket 213 located below the front panel 202. The gesture light module 6 includes a housing 61, an indicator light 62, and a gesture module 63. The indicator light 62 and the gesture module 63 are disposed in the housing 61, and the housing 61 is disposed in the mounting bracket 213. Specifically, as... Figure 23 and Figure 24 As shown, the box body 61 includes a box body 611 and a box cover 612. The box body 611 forms a cavity, and the box cover 612 is fastened to the cavity to form an installation space 614 for installing the gesture module 63. The indicator light 62 is located on the outside of the installation space 614.

[0095] Furthermore, the indicator light 62 is snapped onto the housing 61 via a latch 613 formed on the housing 61. For example... Figure 24 As shown, there are multiple clips 613 located on the side of the indicator light 62 facing away from the mounting space 614. To improve the connection stability between the gesture light module 6 and the mounting bracket 213, the housing 61 can be connected to the mounting bracket 213 via a connecting bracket (not shown). Alternatively, the housing 61 can be snapped onto the mounting bracket 213 or connected via fasteners.

[0096] like Figure 1 , Figure 3 and Figure 25 As shown, in order to better indicate or display the position of the gesture module 63, the indicator light 62 extends downward and protrudes from the mounting bracket 213 in the installed state.

[0097] The gesture light module 6 in this invention integrates a gesture module and an indicator light. The gesture module can recognize user gestures such as waving and pausing, and then work with the controller to realize functions such as starting and stopping the fan 11, adjusting its speed, and switching the lights on and off. The indicator light is used to indicate or display the position of the gesture module, and can also be used to display the working status of the range hood (standby, working, fault). Its snap-fit ​​installation method is convenient for assembly, provides a stable connection, and can withstand the vibration during the operation of the range hood, ensuring connection reliability. By mounting the gesture light module on the mounting bracket, the optimal signal receiving angle of the gesture module is ensured, while hiding it outside the main visual area, avoiding disruption to the design simplicity of the product's front, and achieving a harmonious unity between the additional function and the appearance design.

[0098] Based on the aforementioned structural and functional optimizations, the range hood of this invention also incorporates an image recognition module 7 and supporting protective components, enabling intelligent functions while improving the maintainability and lifespan of the module. The image recognition module 7 is primarily used for image acquisition and data processing. It integrates a camera and can further integrate a fume sensor, temperature sensor, and wireless communication module to achieve functions such as fume concentration detection, image acquisition, and remote interaction with mobile terminals.

[0099] like Figure 4 , Figure 17 , Figures 26 to 30 As shown, a lamp holder 208 for fixing a lighting lamp is provided on the side of the fume hood facing away from the cooking area, and the image recognition module 7 is detachably connected to the lamp holder 208. Figure 29 and Figure 30 As shown, the image recognition module 7 includes a module bracket 71 and a module body 72. The module body 72 is detachably connected to the module bracket 71, and the module bracket 71 is detachably connected to the lamp bracket 208 via a first fastener (not shown). The first fastener is connected from the side of the smoke hood 205 facing the cooking area. Figure 30 Based on the orientation shown, the first fastener connects the lamp bracket 208 and the module bracket 71 from bottom to top. This allows installers or maintenance personnel to connect the lamp bracket 208 and the module bracket 71 simply by operating from below the smoke hood, making the operation convenient and the installation highly efficient. Furthermore, the module body 72 is connected to the module bracket 71 via a second fastener (not shown).

[0100] To protect the image recognition module 7 from the corrosive effects of oil fumes, high temperatures, and moisture, and to extend its service life, this embodiment also includes a protective component. This component covers the outside of the image recognition module 7, is located on the side of the fume hood 205 facing away from the cooking area, and is fixedly connected to the fume hood 205. For example... Figure 4 , Figure 26 and Figure 27 As shown, the smoke collection chamber 2 includes a front panel 202 and a front panel frame 214. The front panel frame 214 supports the front panel 202 and is located on the back side of the front panel 202. Figure 26 and Figure 27 As shown, the protective component is installed on the outside of the image recognition module 7 and located on the side of the smoke hood 205 facing away from the cooking area. The protective component includes a protective cover 209 and a protective plate 207. The protective plate 207 is attached to and connected to the back of the smoke hood 205, and a part of it extends outward. The protective plate 207 is fastened to the protective cover 209 and covers the outside of the image recognition module 7. Only necessary maintenance openings 2071 are reserved on the protective plate 207. The maintenance openings 2071 are located on the side of the protective component facing the front panel frame 214. At least a part of the maintenance openings 2071 are opened on the extension of the protective plate 207, which can effectively isolate various corrosive factors and provide a reliable physical protective barrier for the image recognition module 7.

[0101] like Figure 27 As shown, the protective cover 209 includes a module protection part 2091 and a lighting protection part 2092. The access port 2071 corresponds to the module protection part 2091. In the connected state, the access port 2071 is covered from one side by the module protection part 2091. Figure 26As shown, the access port is not visible when viewed from top to bottom, as it is covered by the module protection part 2091. However, since the access port 2071 is formed on the extension of the protective plate 207, and the front panel frame 214 has a hollow structure that is spatially connected to the access port 2071, maintenance personnel can complete the disassembly and assembly in just a few steps when the image recognition module 7 needs to be repaired or replaced: First, remove the light from below the smoke hood 205; then remove the front panel 202 and its accessories to expose the access port 2071; next, remove the first fastener connecting the light bracket 208 and the module bracket 71, and the module body 72 and the module bracket 71 can be removed from the front of the range hood as a whole. This process is convenient and highly efficient.

[0102] like Figure 28 As shown, the image recognition module 7 of the present invention is located in the middle region of the smoke hood 205 along its length direction to accurately acquire images of the cooking area, thereby providing an accurate data basis for the precise control of the range hood.

[0103] Based on the implementation design of all the above components, the working process of the range hood of the present invention is exemplified as follows: When the user uses a dual-burner stove for cooking, the range hood is turned on. According to the preset program or the result of the oil fume concentration detection, the system activates the two-stage lifting mechanism. During the process of the smoke collection chamber 2 descending relative to the main box 1, the side suction chamber 3 extends further relative to the smoke collection chamber 2 until it is close to the stove to form a low-position side suction area. At the same time, the smoke collection plate driving mechanism drives the smoke collection plate 43 to flip and open, exposing the top suction port 201, and the fan 11 is started.

[0104] During cooking, the initial fumes generated by the stove are quickly captured by the first side intake 311 and the second side intake 312. A small amount of residual fumes rising to a higher position are captured by the top intake 201 and enter the fan 11 through the main and auxiliary smoke paths, achieving all-round and efficient exhaust. At the same time, the light assembly 5 works synchronously to provide soft decorative lighting for the cooking area. The condensed oil generated during the process is guided by the side reinforcing beam 203, the central reinforcing beam 204, and the annular oil collection groove 206, and finally flows into the oil cup 32 for easy cleaning. After cooking, the range hood enters a delayed shutdown state to continue to exhaust residual fumes. At the same time, the smoke collection plate 43 gradually closes, and the side intake chamber 3 is stored inside the smoke collection chamber 2. The smoke collection chamber 2 and the side intake chamber 3 rise together to a position close to the main box 1 for storage, saving kitchen space. In addition, users can control the range hood's working status through gestures on the gesture light module 6. The image recognition module 7 detects relevant parameters in real time and automatically adjusts the fan speed 11 to achieve intelligent operation, thus providing a range hood with significant improvements in both visual appeal and exhaust performance.

[0105] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that, The range hood includes: The main casing contains a fan. The smoke collection chamber is configured to be able to rise and fall relative to the main box, and the smoke collection chamber has a top suction port; A side suction cavity is provided in the smoke collection cavity or the main box in a manner that allows it to be raised and lowered relative to the smoke collection cavity. The side suction cavity forms a side suction port facing the stove side. The side suction cavity opens or closes the side suction port by raising and lowering it relative to the smoke collection cavity. The smoke collection chamber has side reinforcing beams on the inner sides of its two side walls at both ends along its length. The bottom of the side reinforcing beams has a U-shaped groove formed by folding towards the side wall of the main box. The U-shaped groove is located directly below the side wall of the main box and the side wall of the smoke collection chamber and is inclined towards the back side of the smoke collection chamber, and is used to receive the condensed oil dripping from above.

2. The range hood according to claim 1, characterized in that, The smoke collection chamber includes a smoke hood facing the cooking area. The smoke collection chamber is also provided with a central reinforcing beam, which connects two side reinforcing beams. One end of the U-shaped groove extends and approaches the central reinforcing beam to guide the solidified oil collected by the U-shaped groove to the smoke hood located below the central reinforcing beam.

3. The range hood according to claim 2, characterized in that, The smoke collection chamber also includes an annular oil collection groove surrounding the side suction chamber. The condensed oil collected by the smoke hood can be guided into the annular oil collection groove. The annular oil collection groove is connected to an oil cup located at the bottom of the side suction chamber on the back of the side suction chamber.

4. The range hood according to claim 3, characterized in that, At least one first oil guide groove is provided near the edge of the central reinforcing beam of the smoke hood, so as to guide the condensed oil to the annular oil collection groove through the first oil guide groove.

5. The range hood according to claim 3, characterized in that, The annular oil collecting groove has an oil outlet protruding towards the back wall of the side suction cavity at its back edge. The back wall of the side suction cavity is recessed inward to form a second oil guide groove for accommodating the oil outlet. The second oil guide groove connects the annular oil collecting groove and the oil cup.

6. The range hood according to claim 5, characterized in that, The second oil guide groove extends in a vertical direction.

7. The range hood according to claim 5, characterized in that, The second oil guide groove is multiple.

8. The range hood according to claim 5, characterized in that, An oil guide is also provided at the location of the oil outlet.

9. The range hood according to claim 8, characterized in that, The oil guide is a rubber oil guide.

10. The range hood according to any one of claims 1 to 9, characterized in that, The range hood also includes: A smoke-collecting plate is rotatably mounted at the top suction port to open and close the top suction port.

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