Range hood

Abstract

The utility model discloses a kind of range hood, range hood includes: smoke box, smoke box has first smoke chamber and second smoke chamber, the upper portion of first smoke chamber is communicated with second smoke chamber, smoke box has with the first air inlet and second air inlet of first smoke chamber communication, first air inlet is located above second air inlet;Air deflector, air deflector is located in first smoke chamber and is oppositely arranged with first air inlet, air deflector is used to guide the airflow entering first air inlet to second smoke chamber, and air deflector is equipped with overflow passage between backboard of smoke box, the airflow entering first smoke chamber through second air inlet passes overflow passage and enters second smoke chamber. Air deflector not only can change the airflow direction entering first air inlet, guide it upwards, also ensure that main suction airflow entering second air inlet can pass overflow passage smoothly to enter second smoke chamber without obstruction, fundamentally avoid the collision or interference of upper and lower two airflows in first smoke chamber.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0002] With the improvement of living standards, range hoods have become an indispensable kitchen appliance in modern families. Common range hoods include top-mounted range hoods, side-mounted range hoods, and top-and-side integrated range hoods. Top-and-side integrated range hoods have a large smoke extraction coverage area, which can absorb and exhaust heated fumes outdoors from the top and sides, resulting in better adsorption.

[0003] In related technologies, range hoods with side-suction functions typically have a smoke-collecting chamber at the front, with side air inlets at both the upper and lower parts of the chamber to be close to the cooktop. Airflow entering from these side inlets flows upwards into the suction chamber containing the fan. However, since the upper and lower side air inlets are connected to the same smoke-collecting chamber, and both intake airflow is from front to back, under the negative pressure of the fan, the airflow from the upper inlet impacts the rear wall of the smoke-collecting chamber due to inertia. This obstructs the upward flow of airflow from the lower side inlet, causing the two airflows to collide or interfere with each other at the convergence area within the smoke-collecting chamber. This reduces overall smoke-collecting efficiency and may lead to increased noise and energy consumption. Therefore, how to rationally arrange the air inlets or optimize the airflow path to avoid mutual interference between the upper and lower airflows has become a key technical challenge in improving the performance of side-suction range hoods. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a smoke hood that, by setting an air guide plate inside the upper air inlet, can fundamentally avoid the upper and lower airflows from clashing or interfering with each other in the same smoke collection chamber, thus optimizing the flow field organization within the chamber.

[0005] A smoke hood according to an embodiment of the present invention includes: a smoke collection box, the smoke collection box having a first smoke collection chamber and a second smoke collection chamber, the upper part of the first smoke collection chamber communicating with the second smoke collection chamber, the smoke collection box having a first air inlet and a second air inlet communicating with the first smoke collection chamber, the first air inlet being located above the second air inlet; and a guide plate, the guide plate being disposed in the first smoke collection chamber and opposite to the first air inlet, the guide plate being used to guide the airflow entering the first air inlet to the second smoke collection chamber, and a flow passage being provided between the guide plate and the back plate of the smoke collection box, the airflow entering the first smoke collection chamber through the second air inlet entering the second smoke collection chamber through the flow passage.

[0006] Compared with the prior art, this utility model has at least the following technical advantages: The smoke collection box is provided with a first air inlet and a second air inlet connected to the first smoke collection chamber. Due to inertia, the airflow entering from the first air inlet impacts the back plate of the smoke collection box, causing this airflow to obstruct the main oil fume airflow entering from the second air inlet and flowing upward along the cavity, resulting in the upper and lower airflows colliding or interfering within the first smoke collection chamber. By setting a guide plate opposite to the first air inlet, the guide plate serves two purposes: firstly, it intercepts the airflow and changes its direction through its surface contour, guiding it upward and facilitating its smooth flow into the second smoke collection chamber; secondly, a flow passage is reserved between the guide plate and the back plate, ensuring that the low-level main suction airflow entering from the second air inlet can rise smoothly through this flow passage without obstruction and enter the second smoke collection chamber. This fundamentally avoids the lateral or oblique collision of the upper and lower airflows within the first smoke collection chamber, optimizes the flow field organization within the cavity, improves the synergy of oil fume capture and the overall efficiency of the smoke exhaust system, and helps reduce operating noise and energy consumption.

[0007] According to some embodiments of the present invention, the air guide plate is inclined upward from front to back and extends above the first air inlet.

[0008] According to some embodiments of the present invention, the air guide plate is arc-shaped, with its concave surface facing the first air inlet.

[0009] According to some embodiments of the present invention, the air guide plate includes a connecting section and an air guide section, wherein the connecting section is connected to the front plate of the smoke collection box.

[0010] According to some embodiments of this utility model, the left and right sides of the air guide section are connected to the corresponding side walls of the first smoke collection chamber.

[0011] According to some embodiments of the present invention, the air guide section is provided with connecting parts on both sides in the left and right directions, and the connecting parts are connected to the side wall of the corresponding side of the first smoke collection chamber.

[0012] According to some embodiments of the present invention, an oil guide groove is defined between the connecting section of the air guide plate and the air guide section.

[0013] According to some embodiments of the present invention, the first smoke collection chamber is provided with two partitions located on both sides of the first air inlet and the second air inlet. The two partitions form an oil collection chamber on both sides of the first smoke collection chamber. The partitions on both sides are provided with a first oil guide hole and a second oil guide hole. The oil in the oil guide groove is guided into the oil collection chamber on the corresponding side through the first oil guide hole on the corresponding side. The oil in the oil collection chamber is guided to the bottom of the first smoke collection chamber through the second oil guide hole.

[0014] According to some embodiments of the present invention, gaps are provided between the left and right sides of the air guide plate and the corresponding side walls of the first smoke collection chamber, and the oil in the oil guide groove is guided to the bottom of the first smoke collection chamber through the gaps.

[0015] According to some embodiments of the present invention, the upper end of the air guide section is provided with a flange that bends forward or backward, and the flange is attached to the surface of the air guide section.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the appearance of a range hood according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of a range hood according to an embodiment of the present utility model. Figure 1 ; Figure 3 This is a cross-sectional view of a range hood according to an embodiment of the present utility model. Figure 2 ; Figure 4 yes Figure 3 A magnified view of a portion of the smoke machine area; Figure 5 This is a cross-sectional view of a range hood according to an embodiment of the present utility model. Figure 3 ; Figure 6 yes Figure 5 A magnified view of the area at point B.

[0018] Figure label: 100. Range Hood; 1. Smoke Collection Box; 11. First Smoke Collection Chamber; 12. Second Smoke Collection Chamber; 13. First Air Inlet; 14. Second Air Inlet; 15. Back Panel; 16. Flow Channel; 17. Front Panel; 18. Partition; 1801. First Oil Guide Hole; 1802. Second Oil Guide Hole; 19. Top Panel; 2. Air Guide Plate; 21. Connecting Section; 22. Air Guide Section; 2201. Connecting Part; 2202. Flanged Edge; 23. Oil Guide Groove; 3. Oil Cup. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0020] The following is for reference. Figures 1-6Description of a range hood 100 according to an embodiment of the present utility model.

[0021] like Figures 1-6 As shown, the smoke hood 100 includes a smoke collection box 1 and an air guide plate 2. The smoke collection box 1 has a first smoke collection chamber 11 and a second smoke collection chamber 12. The upper part of the first smoke collection chamber 11 is connected to the second smoke collection chamber 12. The smoke collection box 1 has a first air inlet 13 and a second air inlet 14 connected to the first smoke collection chamber 11. The first air inlet 13 is located above the second air inlet 14.

[0022] Specifically, the second air inlet 14 is positioned close to the stovetop, serving as the main fume extraction inlet to efficiently capture high-temperature, high-concentration fumes in the initial stages of their rise. The first air inlet 13, located above the second air inlet 14, acts as an auxiliary intake, primarily intercepting and supplementing the intake of fumes that fail to be captured by the second air inlet 14 and instead escape or diffuse upwards along the range hood panel. This layered and coordinated air intake layout not only achieves efficient close-range extraction of fumes near the stovetop but also effectively captures residual fumes that have escaped to higher positions, thereby significantly improving the overall smoke collection coverage and exhaust efficiency.

[0023] Furthermore, the first smoke collection chamber 11 and the second smoke collection chamber 12 are connected vertically. The first smoke collection chamber 11 is responsible for capturing oil fumes. After entering the first smoke collection chamber 11 through the first air inlet 13 and the second air inlet 14, the oil fumes flow upward under negative pressure and converge into the second smoke collection chamber 12. The second smoke collection chamber 12 is equipped with a fan, which draws in the collected oil fumes and guides them into the exhaust channel, ultimately discharging them outside the machine. This structure realizes an airflow organization path of "low-level main suction - high-level supplementary suction - centralized exhaust", and provides stable and concentrated air intake conditions for the fan, which helps to improve exhaust efficiency and reduce noise.

[0024] Furthermore, the air guide plate 2 is disposed inside the first smoke collection chamber 11 and is disposed opposite to the first air inlet 13. The air guide plate 2 is used to guide the airflow entering the first air inlet 13 to the second smoke collection chamber 12. A flow passage 16 is provided between the air guide plate 2 and the back plate 15 of the smoke collection box 1. The airflow entering the first smoke collection chamber 11 through the second air inlet 14 enters the second smoke collection chamber 12 through the flow passage 16.

[0025] It is understandable that the side wall of the smoke collection box 1 has a first air inlet 13 and a second air inlet 14, and the air intake direction of the first air inlet 13 and the second air inlet 14 is roughly from front to back. The airflow entering through the first air inlet 13 will directly impact the back plate 15 of the smoke collection box 1 due to inertia. This lateral impact airflow not only has difficulty turning upward smoothly, but also obstructs the main oil fume airflow entering through the second air inlet 14 and flowing upward along the first smoke collection chamber 11 to the second smoke collection chamber 12. This causes the upper and lower airflows to collide or interfere with each other in the first smoke collection chamber 11, thereby reducing the overall airflow organization efficiency and affecting the smoke collection performance.

[0026] To address this, the present invention includes a guide plate 2 at the first air inlet 13. The guide plate 2 is arranged opposite to the first air inlet 13 to intercept and change the flow direction of the airflow entering the first air inlet 13, guiding it upwards so that it can smoothly flow into the second smoke collection chamber 12. Specifically, when the airflow enters the first smoke collection chamber 11 from the first air inlet 13, it impacts the guide plate 2 and, under the guidance of the guide plate 2, deflects upwards along its surface before flowing into the second smoke collection chamber 12. Simultaneously, a space is reserved between the rear side of the guide plate 2 and the back plate 15 of the smoke collection box 1, forming a flow channel 16. The airflow entering the first smoke collection chamber 11 from the second air inlet 14 enters the second smoke collection chamber 12 through the flow channel 16.

[0027] In one specific embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the first air inlet 13 is located on an inclined wall panel at the front of the smoke collection box 1, causing the airflow entering through the first air inlet 13 to be from front to back and inclined downwards. This downward-inclined airflow direction makes it more difficult for the airflow to naturally turn upwards after entering the first smoke collection chamber 11, and it directly impacts the back plate 15 of the smoke collection box 1 due to inertia. More disadvantageously, this downward-impacting airflow not only obstructs the main oil fume airflow entering from the second air inlet 14 and flowing upwards along the first smoke collection chamber 11 to the second smoke collection chamber 12, but also directly collides with it, causing airflow turbulence and negative pressure loss, thereby weakening the overall smoke collection efficiency.

[0028] The air guide plate 2 enables spatial separation and orderly convergence of the upper and lower air intakes: the upper airflow from the first air intake 13 is actively guided upward by the air guide plate 2, while the lower airflow from the second air intake 14 can rise smoothly through the flow channel 16 without obstruction. The two airflows flow synchronously towards the second smoke collection chamber 12, avoiding the problem of upper and lower airflow collision caused by the inertial impact of the upper air intake airflow in the traditional structure.

[0029] In the smoke hood 100 of this utility model, since the smoke collection box 1 is provided with a first air inlet 13 and a second air inlet 14 connected to the first smoke collection chamber 11, the airflow entering through the first air inlet 13 will impact the back plate 15 of the smoke collection box 1 due to inertia. This airflow will obstruct the main oil fume airflow entering through the second air inlet 14 and flowing upward along the cavity, causing the upper and lower airflows to collide or interfere with each other in the first smoke collection chamber 11. By setting a guide plate 2 opposite to the first air inlet 13, the guide plate 2 is used to intercept the airflow entering through the first air inlet 13, change the direction of the airflow through its surface contour, guide it into an upward flow path, and promote its smooth flow into the airflow channel leading to the second smoke collection chamber 12; on the other hand, an overflow channel 16 is reserved between the guide plate 2 and the back plate 15 to ensure that the low-level main suction airflow entering from the second air inlet 14 can rise smoothly through the overflow channel 16 without obstruction and enter the second smoke collection chamber 12. Thus, the air guide plate 2 effectively guides the high-level supplementary airflow and ensures the passage of the low-level main airflow, fundamentally avoiding the lateral or oblique collision of the upper and lower airflows in the first smoke collection chamber, optimizing the flow field organization within the chamber, improving the synergy of oil fume capture and the overall efficiency of the smoke exhaust system, while also helping to reduce operating noise and energy consumption.

[0030] In some embodiments of this utility model, such as Figures 3-4 As shown, the air guide plate 2 is inclined upward from front to back and extends above the first air inlet 13.

[0031] It is understood that the air guide plate 2 is arranged in an upward tilting manner from front to back, and the upper end of the air guide plate 2 extends upward to the area above the first air inlet 13, so that the first air inlet 13 is at least partially located below the air guide plate 2 or directly opposite the forward tilting surface of the air guide plate 2.

[0032] With this configuration, when the airflow carrying fumes enters the first smoke-collecting chamber 11 from the first air inlet 13, it impacts the forward-leaning surface of the guide plate 2 and smoothly transitions to an upward-sloping flow path along the inclined surface of the guide plate 2, thus smoothly merging into the communication area between the upper part of the first smoke-collecting chamber 11 and the second smoke-collecting chamber 12. Simultaneously, the guide plate 2 extends above the first air inlet 13, effectively preventing airflow from escaping or spreading disorderly from above the first air inlet, ensuring that the supplementary airflow is effectively captured and merged into the second smoke-collecting chamber 12. If the guide plate 2 did not extend above the first air inlet 13, some of the airflow entering from the first air inlet 13 would still impact the back plate 15 laterally or downwards, thus hindering the stable upward movement of the main fumes airflow entering from the second air inlet 14, resulting in airflow collision and reduced smoke-collecting efficiency.

[0033] In addition, when the airflow carrying the fumes rises from the second air inlet 14, it will impact the rear side of the air guide plate 2, causing some of the condensed fumes to adhere to the rear side of the air guide plate 2. The oil droplets can slide down along the inclined surface of the air guide plate 2 to the bottom of the first smoke collection chamber 11, and finally collect in the oil cup 3, reducing the accumulation of grease.

[0034] By setting the air guide plate 2 to tilt upwards from front to back and extend above the first air inlet 13, it can not only effectively prevent the supplementary airflow from escaping or spreading disorderly from above the first air inlet 13, ensuring that it is guided into the second smoke collection chamber 12; it can also effectively prevent the supplementary airflow from still impacting the back plate 15 horizontally or diagonally downwards, ensuring that the main oil fume airflow entering from the second air inlet 14 rises steadily, and further fundamentally avoid the problem of the upper and lower airflows colliding in the first smoke collection chamber.

[0035] In some embodiments of this utility model, such as Figure 4 As shown, the air guide plate 2 is arc-shaped, with its concave surface facing the first air inlet 13.

[0036] With this configuration, when the airflow carrying oil fumes enters the first smoke collection chamber 11 from the first air inlet 13, the airflow first impacts the concave surface of the guide plate 2. Because the concave surface has the characteristic of converging and guiding airflow along the curved surface, combined with the overall upward tilt of the guide plate 2, the incident airflow is smoothly guided upwards, thus flowing smoothly into the second smoke collection chamber 12. This design avoids disordered diffusion, backflow, or energy dissipation of airflow after impact, significantly improving the airflow transmission efficiency from the first air inlet 13 to the fan inlet. Furthermore, the continuous curved surface structure of the arc-shaped guide plate 2 facilitates the smooth downward sliding of oil droplets adhering to the guide plate 2 to the bottom of the chamber, and also reduces the disturbance noise during airflow.

[0037] In some embodiments of this utility model, such as Figure 4 As shown, the air guide plate 2 includes a connecting section 21 and an air guide section 22. The connecting section 21 is connected to the front plate 17 of the smoke collection box 1.

[0038] It is understood that the air guide plate 2 includes two parts: a connecting section 21 and an air guide section 22. The two parts can be integrally formed or fixedly connected to form an integral structure. The connecting section 21 is located at the lower front end of the air guide plate 2 and is fixedly connected to the inner side of the front plate 17 of the smoke collection box 1. For example, it can be reliably installed by means of buckles, screws or welding, so as to stably support the air guide plate 2 in the first smoke collection chamber 11.

[0039] like Figure 4As shown, the air guide section 22 extends backward and upward from the connecting section 21. Its main body is located in front of or below the first air inlet 13, and preferably has an arc-shaped structure with its concave surface facing the first air inlet 13. When the airflow enters the first smoke collection chamber 11 through the first air inlet 13, it first acts on the concave surface of the air guide section 22, and flows smoothly upward under the guidance of its curved surface, and then flows into the second smoke collection chamber 12.

[0040] By dividing the air guide plate 2 into a connecting section 21 and an air guide section 22, the connection between the connecting section 21 and the front plate 17 ensures the stability of the structural installation, and allows the air guide section 22 to independently optimize its shape and tilt angle according to aerodynamic requirements, without being limited by the installation position.

[0041] In some embodiments of this utility model, such as Figure 4 As shown, the left and right sides of the air guide section 22 are connected to the corresponding side walls of the first smoke collection chamber 11.

[0042] It is understandable that the left and right edges of the air guide section 22 are connected to the left and right walls of the first smoke collection chamber 11, respectively, through methods such as snap-fitting, welding, screw fixing, or integral molding to achieve a sealed or semi-sealed connection.

[0043] The left and right side connection structure allows the air guide section 22 to form a transversely semi-enclosed flow guide surface within the first smoke collection chamber 11, effectively preventing airflow leakage from both sides of the air guide section 22. This ensures that the airflow entering from the first air inlet 13 is forcibly constrained within the concave area of ​​the air guide section 22 and guided upwards along a preset path to the second smoke collection chamber 12. Simultaneously, this connection method also enhances the overall rigidity of the air guide plate 2, reducing vibration or deformation caused by airflow impact during operation.

[0044] In some embodiments of this utility model, such as Figure 4 As shown, the air guide section 22 has connecting parts 2201 on both sides in the left and right directions, and the connecting parts 2201 are connected to the side wall of the corresponding side of the first smoke collection chamber 11.

[0045] It is understood that connecting parts 2201 are provided on both sides of the air guide section 22 along the left and right directions. The connecting parts 2201 can be flanges, lugs, snaps, mounting bosses or other adaptable structures. The connecting parts 2201 are configured to connect to the left and right walls of the first smoke collection chamber 11, and can be reliably fixed by means of snap-fit, screw fastening, welding or integral injection molding.

[0046] By providing dedicated connecting portions 2201 on both sides of the air guide section 22, not only is it possible to avoid directly opening holes or setting installation structures on the air guide functional surface (such as the arc-shaped concave surface), which would affect the smoothness of airflow, but it also allows the air guide section 22 to be securely embedded in the first smoke collection chamber 11, forming a stable airflow barrier. This structure effectively ensures that the air guide section 22 stably resists the impact force of airflow, reducing vibration or deformation caused by airflow impact during operation. In a preferred embodiment, the connecting portion 2201 is located at the upper end of the air guide section 22, forming an upper and lower fixed point structure with the connecting section 21, improving the structural stability of the air guide plate 2.

[0047] In some embodiments of this utility model, such as Figure 4 As shown, an oil guide groove 23 is defined between the connecting section 21 and the air guide section 22 of the air guide plate 2.

[0048] It is understood that the connecting section 21 and the air guide section 22 are structurally separated by a gap or by a specific contour design, together defining an oil guide groove 23. This oil guide groove 23 is located in the bottom front area of ​​the air guide section 22, downstream of the oil fume flow path. During the operation of the range hood 100, oil droplets adhering to the surface of the air guide section 22 flow downwards along its inclined surface under gravity, collecting at the junction of the connecting section 21 and the air guide section 22, and are then concentrated and guided by the oil guide groove 23, finally draining into the oil cup 3, thus simplifying the structure.

[0049] In one embodiment of this utility model, the first smoke collection chamber 11 is provided with two partitions 18 located on both sides of the first air inlet 13 and the second air inlet 14. The two partitions 18 form oil collection chambers on both sides of the first smoke collection chamber 11. The partitions 18 on both sides are provided with a first oil guide hole 1801 and a second oil guide hole 1802. The oil in the oil guide groove 23 is guided into the oil collection chamber on the corresponding side through the first oil guide hole 1801 on the corresponding side. The oil in the oil collection chamber is guided to the bottom of the first smoke collection chamber 11 through the second oil guide hole 1802.

[0050] Specifically, the first smoke collection chamber 11 is provided with two partitions 18, which are located on the left and right sides of the first air inlet 13 and the second air inlet 14, respectively. The two partitions 18 form an oil collection chamber with the corresponding side wall of the first smoke collection chamber 11, so that the first smoke collection chamber 11 is divided into three parts: two oil collection chambers and a smoke collection chamber located between the two oil collection chambers.

[0051] An oil guide groove 23 extending in the left-right direction is defined between the connecting section 21 of the air guide plate 2 and the air guide section 22 to collect oil droplets sliding off the surface of the air guide section 22. Correspondingly, each partition 18 is provided with a first oil guide hole 1801 and a second oil guide hole 1802. The first oil guide hole 1801 is located in the upper region of the partition 18 and communicates with the corresponding side end of the oil guide groove 23. The second oil guide hole 1802 is located in the lower region of the partition 18, near the bottom of the first smoke collection chamber 11.

[0052] During the operation of the range hood 100, the oil droplets attached to the surface of the air guide plate 2 slide down along the air guide section 22 under the action of gravity, collect in the oil guide groove 23, and flow into the oil collection chamber on the same side through the first oil guide hole 1801 on the corresponding side; then, the oil in the oil collection chamber is further guided through the second oil guide hole 1802 on the partition plate 18 on this side, and is guided to the bottom area of ​​the first smoke collection chamber 11, and finally flows into the oil cup 3 at the bottom of the whole machine.

[0053] The above structure enables graded flow and orderly collection of oil sludge. Specifically, the oil guide groove 23 is responsible for collecting oil at the front end, the oil collection chamber serves as an intermediate buffer storage area, and the second oil guide hole 1802 ensures that the oil is reliably discharged to the bottom of the chamber, preventing oil from accumulating on the side walls or near the air inlet, thus effectively improving the cleanliness and long-term operational reliability of the entire machine.

[0054] In another embodiment of this utility model, gaps are provided between the left and right sides of the air guide section 22 and the corresponding side walls of the first smoke collection chamber 11, and the oil in the oil guide groove 23 is guided to the bottom of the first smoke collection chamber 11 through the gaps.

[0055] Unlike the previous embodiments, in this embodiment, the air guide section 22 maintains a predetermined width of gap between its left and right sides and its corresponding sidewalls. The connecting section 21 and the air guide section 22 define an oil guide groove 23 extending in the left and right directions. Under the action of gravity, the oil in the oil guide groove 23 can flow naturally to the bottom of the first smoke collection chamber 11 through the gap between the left and right sides of the air guide section 22 and the sidewall of the cavity, and finally flow into the oil cup 3 at the bottom of the whole machine.

[0056] The above structure eliminates the need for side oil guide holes or independent oil collection chambers. By setting the gaps reasonably as oil guide channels, the structure is simplified, the manufacturing cost is reduced, and the oil can be discharged smoothly, avoiding accumulation at the base or side wall of the air guide plate. This balances the guiding performance and the ease of cleaning.

[0057] In some embodiments of this utility model, such as Figure 4 As shown, the upper end of the air guide section 22 is provided with a flange 2202 that bends forward or backward, and the flange 2202 is attached to the surface of the air guide section 22. Specifically, the flange 2202 is formed by bending the upper edge of the air guide section 22 forward or backward along its body surface, and is tightly attached to the outer surface of the air guide section 22. This can improve the structural rigidity of the upper end of the air guide section 22, prevent deformation caused by vibration or external force, and avoid exposed sharp edges, thereby improving product safety. In one embodiment, the flange 2202 can be integrally formed into the air guide section 22 by stamping or bending processes.

[0058] In some embodiments of this utility model, such as Figures 3-4As shown, the top plate 19 of the smoke collection box 1 forms the bottom plate of the second smoke collection chamber 12. The rear edge of the top plate 19 of the smoke collection box 1 extends into the first smoke collection chamber 11. A gap is provided between the top plate 19 of the smoke collection box 1 and the front plate 17 of the smoke collection box 1, and this gap forms the first air inlet 13.

[0059] 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.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0061] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that, include: A smoke collection box (1) has a first smoke collection chamber (11) and a second smoke collection chamber (12). The upper part of the first smoke collection chamber (11) is connected to the second smoke collection chamber (12). The smoke collection box (1) has a first air inlet (13) and a second air inlet (14) connected to the first smoke collection chamber (11). The first air inlet (13) is located above the second air inlet (14). The air guide plate (2) is located in the first smoke collection chamber (11) and is opposite to the first air inlet (13). The air guide plate (2) is used to guide the airflow entering the first air inlet (13) to the second smoke collection chamber (12). A flow passage (16) is provided between the air guide plate (2) and the back plate (15) of the smoke collection box (1). The airflow entering the first smoke collection chamber (11) through the second air inlet (14) enters the second smoke collection chamber (12) through the flow passage (16).

2. The range hood according to claim 1, characterized in that, The air guide plate (2) is inclined upward from front to back and extends above the first air inlet (13).

3. The range hood according to claim 2, characterized in that, The air guide plate (2) is arc-shaped, with its concave surface facing the first air inlet (13).

4. The range hood according to claim 1, characterized in that, The air guide plate (2) includes a connecting section (21) and an air guide section (22), and the connecting section (21) is connected to the front plate (17) of the smoke collection box (1).

5. The range hood according to claim 4, characterized in that, The left and right sides of the air guide section (22) are connected to the corresponding side walls of the first smoke collection chamber (11).

6. The range hood according to claim 5, characterized in that, The air guide section (22) is provided with connecting parts (2201) on both sides in the left and right directions. The connecting parts (2201) are connected to the side wall of the corresponding side of the first smoke collection chamber (11).

7. The range hood according to claim 4, characterized in that, An oil guide groove (23) is defined between the connecting section (21) and the air guide section (22) of the air guide plate (2).

8. The range hood according to claim 7, characterized in that, The first smoke collection chamber (11) is provided with two partitions (18) located on both sides of the first air inlet (13) and the second air inlet (14). The two partitions (18) form an oil collection chamber on both sides of the first smoke collection chamber (11). The partitions (18) on both sides are provided with a first oil guide hole (1801) and a second oil guide hole (1802). The oil in the oil guide groove (23) is introduced into the oil collection chamber on the corresponding side through the first oil guide hole (1801) on the corresponding side. The oil in the oil collection chamber is guided to the bottom of the first smoke collection chamber (11) through the second oil guide hole (1802).

9. The range hood according to claim 7, characterized in that, There is a gap between the left and right sides of the air guide section (22) and the corresponding side wall of the first smoke collection chamber (11), and the oil in the oil guide groove (23) is guided to the bottom of the first smoke collection chamber (11) through the gap.

10. The smoke hood according to claim 4, characterized in that, The upper end of the air guide section (22) is provided with a flange (2202) that bends forward or backward, and the flange (2202) is attached to the surface of the air guide section (22).

Images