Range hood
By introducing a baffle assembly into the range hood, front and rear air intake channels are formed, solving the problems of wasted air volume and turbulent airflow, thus improving the efficiency and user experience of the range hood.
Patent Information
- Application Number
- CN202520431818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing range hoods are prone to wasting airflow and causing airflow disturbances during use, especially the back of the range hood, where the oily smoke cannot effectively enter the smoke collection chamber, resulting in poor smoke extraction performance.
The system employs a baffle assembly, including wall-mounted baffles and isolation baffles, to form front and rear air intake channels. By utilizing the wall-mounted effect of oil fumes, it concentrates the negative pressure area, avoids the formation of air vortices, and improves the utilization rate of effective air volume.
By designing the baffle assembly, the effective airflow ratio of the range hood is increased, airflow waste is reduced, the efficiency and effectiveness of smoke extraction are improved, noise is reduced, and the user experience is enhanced.
Smart Images
Figure CN223840456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of home appliance technology, and in particular to range hoods. Background Technology
[0002] A range hood is a household appliance used to collect and exhaust cooking fumes indoors. It mainly consists of a motor, a casing, and a smoke collection chamber. The smoke collection chamber is located at the bottom of the casing, and an air inlet is located on the bottom surface of the chamber. Range hoods are typically installed above the cooktop. When the motor starts, it creates a negative pressure in the casing and smoke collection chamber, causing the rising cooking fumes to enter the smoke collection chamber and casing through the air inlet, where they are then collected and exhausted.
[0003] like Figure 1 and Figure 2 As shown, the air inlet at the bottom of the smoke collection chamber 100 is typically rectangular, allowing both the oily fumes Q (located at the front) and H (located at the rear) to enter the smoke collection chamber 100. Existing range hoods have several drawbacks: when oily fumes Y enter the smoke collection chamber 100 from the rear side of the air inlet (the side furthest from the user), they easily form an air vortex X, causing localized airflow turbulence; the cooking fumes are not evenly distributed. For ease of operation, the stove is usually close to the user, so the fumes are mainly concentrated at the air inlet near the user, with less fumes at the rear side (the side furthest from the user). Some of the air drawn into the smoke collection chamber 100 does not contain oily fumes, resulting in wasted airflow. Utility Model Content
[0004] The purpose of this utility model is to propose a range hood that solves the problem of wasted airflow caused by existing range hoods, and has a good smoke extraction effect.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A range hood includes: a housing; a smoke collection chamber connected to the housing, the bottom of which has a through hole; and a baffle assembly disposed in the housing and the smoke collection chamber and located at the rear, the baffle assembly including a wall-mounted baffle and a separating baffle; when absorbing fumes, the wall-mounted baffle and the separating baffle contact each other to form a continuous structure, thereby isolating and forming a front air intake channel and a rear air intake channel in the smoke collection chamber.
[0007] In one preferred embodiment, when absorbing fumes, part of the wall-mounted baffle is located in the casing and another part is located in the smoke collection chamber, and part of the isolation baffle is located in the smoke collection chamber and another part extends out of the smoke collection chamber.
[0008] In one preferred embodiment, the wall-mounted baffle and / or the isolation baffle are arc-shaped.
[0009] In one preferred embodiment, both the wall-mounted guide plate and the isolation guide plate are arc-shaped, with the wall-mounted guide plate protruding forward and the isolation guide plate protruding backward.
[0010] In one preferred embodiment, when absorbing fumes, the outer convex surface of the wall-mounted baffle is tangent to the outer convex surface of the isolation baffle.
[0011] In one preferred embodiment, the wall-mounted baffle and / or the isolation baffle are arc-shaped.
[0012] In one preferred embodiment, the deflector assembly further includes a wall-mounted deflector arm, one end of which is fixedly connected to the wall-mounted deflector plate, and the other end of which is hinged to the chassis. The wall-mounted deflector arm can drive the wall-mounted deflector plate to rotate around the hinged end.
[0013] In one preferred embodiment, the baffle assembly further includes an isolation baffle rod, one end of which is fixedly connected to the isolation baffle plate, and the other end of which is hinged to the smoke collection chamber. The isolation baffle rod can drive the isolation baffle plate to swing around the hinged end. When not absorbing fumes, the isolation baffle plate is completely inserted into the smoke collection chamber.
[0014] In one preferred embodiment, the range hood further includes a smoke baffle plate disposed in the smoke collection chamber. At least one air inlet closer to the rear of the smoke collection chamber is formed between the edge of the smoke baffle plate and the edge of the bottom through hole of the smoke collection chamber. The isolation guide plate can partially extend out of the smoke collection chamber through the air inlet.
[0015] In one preferred embodiment, the smoke baffle and the smoke collection chamber are independent structures; or, at least one air inlet is opened on the bottom surface of the smoke collection chamber, and the bottom surface of the smoke collection chamber between all the air inlets forms a smoke baffle.
[0016] The range hood disclosed in this utility model includes a wall-mounted guide plate and an isolation guide plate. The isolation guide plate can prevent air containing only a small amount of oil fumes located at the rear of the smoke collection chamber from freely entering the bottom through-hole of the smoke collection chamber. This concentrates the negative pressure area of the range hood at the front of the isolation guide plate, allowing more air containing a larger amount of oil fumes located at the front to enter the smoke collection chamber, increasing the proportion of effective airflow, avoiding airflow waste, and improving the efficiency of smoke extraction. Based on the oil fume wall-mounted effect, the small amount of oil fume airflow located at the rear of the smoke collection chamber moves upward along the wall-mounted guide plate until it enters the smoke collection chamber and the casing, eliminating the air vortex at the rear of the smoke collection chamber and preventing the oil fume airflow drawn in from the rear from merging with the oil fume airflow drawn in from the front, thus avoiding airflow turbulence and improving the smoke extraction effect. Attached Figure Description
[0017] Figure 1 This is a partial structural diagram of an existing range hood;
[0018] Figure 2This is a schematic diagram of the air vortex generated in existing range hoods;
[0019] Figure 3 This is a structural schematic diagram of the range hood provided in a specific embodiment of this utility model;
[0020] Figure 4 This is a partial structural diagram of the range hood when it is not absorbing oil fumes, according to a specific embodiment of this utility model;
[0021] Figure 5 This is one of the partial structural diagrams of the range hood when it is absorbing oil fumes, provided in a specific embodiment of this utility model;
[0022] Figure 6 This is the second partial structural schematic diagram of the range hood when it is absorbing oil fumes, provided in a specific embodiment of this utility model;
[0023] Figure 7 This is a schematic diagram of the combined structure of the smoke collection chamber, the guide plate assembly, and the smoke baffle provided in a specific embodiment of this utility model;
[0024] Figure 8 This is a schematic diagram of a partial combination structure of the smoke collection chamber, the guide plate assembly, and the smoke baffle provided in a specific embodiment of this utility model.
[0025] In the picture:
[0026] 1. Chassis; 2. Smoke collection chamber; 4. Smoke baffle; 21. Front air inlet channel; 22. Rear air inlet channel; 23. Air inlet; 31. Wall-mounted guide plate; 32. Isolation guide plate; 33. Wall-mounted guide swing rod; 34. Isolation guide swing rod; 100. Smoke collection chamber. Detailed Implementation
[0027] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0028] 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.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0033] This embodiment discloses a range hood for collecting and venting indoor cooking fumes. For example... Figures 3 to 8 As shown, the range hood includes a casing 1, a smoke collection chamber 2, and a baffle assembly. The smoke collection chamber 2 is connected to the casing 1. A through hole is provided at the bottom of the smoke collection chamber 2. The baffle assembly is disposed in the casing 1 and the smoke collection chamber 2, located at the rear. The baffle assembly includes a wall-mounted baffle 31 and a separating baffle 32. During smoke extraction, the wall-mounted baffle 31 and the separating baffle 32 contact each other to form a continuous structure, thereby isolating and forming a front air intake channel 21 and a rear air intake channel 22 within the smoke collection chamber 2.
[0034] The baffle plate 32 prevents air containing only a small amount of oil fumes located at the rear of the smoke collection chamber 2 from freely entering the bottom through-hole of the smoke collection chamber 2. This concentrates the negative pressure area of the range hood at the front of the baffle plate 32, allowing more oil-fumes-laden air at the front to enter the smoke collection chamber 2. The oil fumes are drawn directly below the smoke collection chamber 2, increasing the proportion of effective airflow, avoiding wasted airflow, and improving smoke extraction efficiency. The area furthest from the user is the "rear side" of the smoke collection chamber 2, and the area closest to the user is the "front side".
[0035] Utilizing the oil fume adhesion effect, a small amount of oil fume airflow located at the rear of the smoke collection chamber 2 moves upward along the adhesion guide plate 31 until it enters the smoke collection chamber 2 and the casing 1, eliminating the air vortex at the rear of the smoke collection chamber 2, preventing the oil fume airflow drawn in from the rear from merging with the oil fume airflow drawn in from the front, thus avoiding airflow turbulence and improving the oil fume extraction effect.
[0036] To achieve better fume extraction, during fume extraction, part of the wall-mounted baffle 31 is located in the casing 1 and the other part is located in the fume collection chamber 2. The small amount of fume airflow located behind the fume collection chamber 2 can enter the casing 1 more smoothly from the fume collection chamber 2. Part of the isolation baffle 32 is located in the fume collection chamber 2 and the other part extends out of the fume collection chamber 2. Before entering the fume collection chamber 2, it isolates the front airflow from the rear airflow and minimizes airflow turbulence.
[0037] The specific shapes of the wall-mounted guide plate 31 and the isolation guide plate 32 are not limited, as long as they can serve to adhere the oil fumes to the wall and separate the oil fume airflow before and after. In this embodiment, for example... Figure 4 and Figure 5As shown, the wall-mounted deflector 31 and / or the isolation deflector 32 are arc-shaped, resulting in low wind resistance and low energy consumption; the airflow will not collide with obstacles when flowing along the arc-shaped surface, resulting in low noise and a good user experience.
[0038] Furthermore, both the wall-mounted guide plate 31 and the isolation guide plate 32 are arc-shaped, with the wall-mounted guide plate 31 protruding forward and the isolation guide plate 32 protruding backward. When absorbing fumes, the wall-mounted guide plate 31 and the isolation guide plate 32 come into contact, forming an S-shaped structure or an inverted S-shaped structure, resulting in a smoother transition of airflow from the isolation guide plate 32 to the wall-mounted guide plate 31 and less noise.
[0039] To reduce the difficulty of achieving accurate contact between the two curved surfaces, the outer convex surface of the attached guide plate 31 and the outer convex surface of the isolation guide plate 32 are tangent. Specifically, as shown... Figure 6 As shown, both the wall-mounted guide plate 31 and the isolation guide plate 32 are arc-shaped, and the tangent point P is located on the line connecting the center O1 and the center O2 of the circle, which is convenient for processing. It is easy to accurately design the position of the tangent point P according to the radius of the wall-mounted guide plate 31 and the isolation guide plate 32, reducing the design and processing difficulty.
[0040] To improve aesthetics, when not absorbing oil fumes, the baffle plate 32 is fully inserted into the smoke collection chamber 2, and the protruding baffle plate 32 is not visible from the outside. The specific structure to achieve this effect is not limited; in this embodiment, for example... Figures 4 to 8 As shown, the baffle assembly also includes an isolation baffle 34. One end of the isolation baffle 34 is fixedly connected to the isolation baffle 32, and the other end of the isolation baffle 34 is hinged to the smoke collection chamber 2. The isolation baffle 34 can drive the isolation baffle 32 to swing around the hinged end.
[0041] When absorbing cooking fumes, the isolation guide lever 34 swings downwards, and the lower half of the isolation guide plate 32 extends out of the smoke collection chamber 2, separating the front and rear airflows in advance and reducing airflow turbulence. When not absorbing cooking fumes, the isolation guide lever 34 swings upwards until the isolation guide plate 32 is fully retracted into the smoke collection chamber 2, resulting in a more aesthetically pleasing appearance and preventing the bottom of the isolation guide plate 32 from scraping against items below the smoke collection chamber 2, thus enhancing safety.
[0042] In order to provide a sufficiently large storage space for the isolation guide plate 32 in the smoke collection chamber 2, the guide plate assembly also includes a wall-mounted guide swing rod 33. One end of the wall-mounted guide swing rod 33 is fixedly connected to the wall-mounted guide plate 31, and the other end of the wall-mounted guide swing rod 33 is hinged to the housing 1. The wall-mounted guide swing rod 33 can drive the wall-mounted guide plate 31 to swing around the hinged end.
[0043] When absorbing cooking fumes, the wall-mounted guide rod 33 swings downwards, and the lower half of the wall-mounted guide plate 31 enters the smoke collection chamber 2 until it is tangent to the isolation guide plate 32 at point P. When not absorbing cooking fumes, the wall-mounted guide rod 33 swings upwards, and the wall-mounted guide plate 31 is fully inserted into the casing 1, leaving sufficient storage space for the isolation guide plate 32 in the smoke collection chamber 2, making it more convenient to use.
[0044] Based on the above structure, such as Figure 3 , Figure 7 and Figure 8 As shown, the range hood also includes a smoke baffle 4. The smoke baffle 4 is disposed in the smoke collection chamber 2, and an air inlet 23 is formed between the edge of the smoke baffle 4 and the edge of the bottom through hole of the smoke collection chamber 2. The specific number of air inlets 23 is not limited, but there is at least one air inlet 23 closer to the rear of the smoke collection chamber 2, through which the baffle plate 32 can partially extend out of the smoke collection chamber 2.
[0045] The specific structure of the smoke baffle 4 is not limited, as long as it can form an air inlet 23 between itself and the edge of the bottom through hole of the smoke collection chamber 2. In one structure, the smoke baffle 4 and the smoke collection chamber 2 are independent structures. That is, the smoke baffle 4 is a rectangular sheet structure, which is fixedly connected to the smoke collection chamber 2 by a bracket or connecting rod, resulting in a more stable connection and higher overall strength.
[0046] In another structure, at least one air inlet 23 is opened on the bottom surface of the smoke collection chamber 2, and a smoke baffle 4 is formed on the bottom surface of the smoke collection chamber 2 between all the air inlets 23. That is, four rectangular air inlets 23 are symmetrically opened on the bottom surface of the smoke collection chamber 2, and the baffle 4 is surrounded by the four air inlets 23. This structure is easy to manufacture and saves materials.
[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A range hood, characterized in that, include: Chassis (1); A smoke collection chamber (2) is connected to the chassis (1), and a through hole is provided at the bottom of the smoke collection chamber (2); and ， A baffle assembly is disposed in the casing (1) and the smoke collection chamber (2) and located at the rear. The baffle assembly includes a wall-mounted baffle (31) and an isolation baffle (32). When absorbing fumes, the wall-mounted baffle (31) and the isolation baffle (32) come into contact to form a continuous structure, thereby isolating and forming a front air intake channel (21) and a rear air intake channel (22) in the smoke collection chamber (2).
2. The range hood according to claim 1, characterized in that, When absorbing fumes, part of the wall-mounted baffle (31) is located in the casing (1) and another part is located in the smoke collection chamber (2). Part of the isolation baffle (32) is located in the smoke collection chamber (2) and another part extends out of the smoke collection chamber (2).
3. The range hood according to claim 1, characterized in that, The attached guide plate (31) and / or the isolation guide plate (32) are arc-shaped.
4. The range hood according to claim 3, characterized in that, Both the attached wall guide plate (31) and the isolation guide plate (32) are arc-shaped, with the attached wall guide plate (31) protruding forward and the isolation guide plate (32) protruding backward.
5. The range hood according to claim 4, characterized in that, When the oil fumes are being drawn in, the outer convex surface of the wall-mounted guide plate (31) is tangent to the outer convex surface of the isolation guide plate (32).
6. The range hood according to claim 3, characterized in that, The attached guide plate (31) and / or the isolation guide plate (32) are arc-shaped.
7. The range hood according to any one of claims 1 to 6, characterized in that, The guide plate assembly also includes a wall-mounted guide swing rod (33), one end of which is fixedly connected to the wall-mounted guide plate (31), and the other end of which is hinged to the chassis (1). The wall-mounted guide swing rod (33) can drive the wall-mounted guide plate (31) to swing around the hinged end.
8. The range hood according to any one of claims 1 to 6, characterized in that, The baffle assembly also includes an isolation baffle rod (34), one end of which is fixedly connected to the isolation baffle (32), and the other end of which is hinged to the smoke collection chamber (2). The isolation baffle rod (34) can drive the isolation baffle (32) to swing around the hinged end. When not absorbing oil fumes, the isolation baffle (32) is completely inserted into the smoke collection chamber (2).
9. The range hood according to any one of claims 1 to 6, characterized in that, The range hood also includes a smoke baffle (4), which is disposed in the smoke collection chamber (2). At least one air inlet (23) closer to the rear of the smoke collection chamber (2) is formed between the edge of the smoke baffle (4) and the edge of the bottom through hole of the smoke collection chamber (2). The isolation guide plate (32) can partially pass through the smoke collection chamber (2) through the air inlet (23).
10. The range hood according to claim 9, characterized in that, The smoke baffle (4) and the smoke collection chamber (2) are independent structures; or, At least one air inlet (23) is opened on the bottom surface of the smoke collection chamber (2), and the bottom surface of the smoke collection chamber (2) between all the air inlets (23) forms the smoke baffle (4).