Air guide structure and range hood
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-26
Smart Images
Figure CN224415223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a wind guide structure and a range hood. Background Technology
[0002] With the continuous development of kitchen appliances, range hoods, as an indispensable piece of equipment in modern kitchens, are constantly being optimized in design and function. The main function of a range hood is to keep the kitchen air fresh by sucking in and filtering cooking fumes. To achieve this function, range hoods are usually equipped with an air guide plate structure to guide and control the airflow at the air inlet. The design of the air guide plate structure directly affects the suction power and smoke extraction efficiency of the range hood.
[0003] In existing technologies, for open-sided air guide plate structures, the air intake areas of the side air inlets and top air inlets are adjustable. However, the air intake area of the bottom air inlet is often not adjustable, or the bottom air inlet is designed to be closed. This design means that when the air volume of the bottom air inlet changes, the air guide plate structure cannot correspondingly increase the air intake area of the bottom air inlet to accelerate the exhaust of oil fumes, nor can it decrease the air intake area of the bottom air inlet to achieve a throttling effect. Utility Model Content
[0004] The purpose of this utility model is to provide an air guiding structure and a range hood that can cope with changes in the air volume at the bottom air inlet, thereby accelerating the exhaust of oil fumes or throttling the flow.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] In a first aspect, the present invention provides an air guiding structure, including a first air guiding plate, a second air guiding plate and a housing, wherein the second air guiding plate is installed on the housing and is set higher than the first air guiding plate, a bottom air inlet is formed between the bottom end of the first air guiding plate and the housing, and the top end of the first air guiding plate is movably engaged with the second air guiding plate to adjust the air inlet area of the bottom air inlet.
[0007] In an optional embodiment, the top end of the first air guide plate is rotatably connected to the second air guide plate.
[0008] In an optional embodiment, the air guide structure further includes a first driver connected between the first air guide plate and the outer casing, the first driver being used to drive the first air guide plate to rotate relative to the second air guide plate.
[0009] In an optional embodiment, the second air guide plate and the outer casing have a top air inlet and a side air inlet, the top air inlet being located at the front end of the second air guide plate away from the first air guide plate, and the side air inlet being located on the side of the second air guide plate.
[0010] In an optional embodiment, the air guiding structure further includes a third air guiding plate disposed on at least one side of the second air guiding plate. The third air guiding plate is movably connected to the outer casing, and the side air inlet is formed between the third air guiding plate and the second air guiding plate. The third air guiding plate is used to adjust the air inlet area of the side air inlet.
[0011] In an optional embodiment, the air guide structure further includes a second driver connected between the third air guide plate and the housing. The second driver is used to drive the third air guide plate to adjust the air intake area of the side air inlet.
[0012] In an optional embodiment, the air guiding structure further includes a fourth air guiding plate movably connected to the outer casing, the fourth air guiding plate forming the top air inlet between the second air guiding plate and the top air inlet, the fourth air guiding plate being used to adjust the air inlet area of the top air inlet.
[0013] In an optional embodiment, the air guide structure further includes a third actuator connected between the fourth air guide plate and the housing. The third actuator is used to drive the fourth air guide plate to adjust the air intake area of the top air inlet.
[0014] In an optional embodiment, the air guide structure further includes a sensor assembly mounted on the second air guide plate, the sensor assembly being used to detect the oil fume concentration of at least one of the bottom air inlet, the top air inlet, and the side air inlet;
[0015] The air guiding structure also includes a controller connected to the sensor assembly, which is used to adjust the air intake area of the bottom air inlet, the top air inlet and the side air inlet according to the oil fume concentration information detected by the sensor assembly.
[0016] Secondly, this utility model provides a range hood, including the air guiding structure as described in any of the foregoing embodiments, wherein the outer shell includes a smoke collection hood and a back panel;
[0017] The second air guide plate is detachably connected to the smoke collection hood;
[0018] The first air guide plate is detachably connected to the back plate via a first driver, and the first driver is used to drive the first air guide plate to rotate relative to the second air guide plate.
[0019] The air guiding structure and range hood provided by this utility model can produce the following beneficial effects:
[0020] In the air guiding structure provided by the first aspect of this utility model, a second air guide plate is installed on the outer casing, and a bottom air inlet is formed between the bottom end of the first air guide plate and the outer casing. The top end of the first air guide plate is movably engaged with the second air guide plate. During use, the air intake area of the bottom air inlet can be adjusted by adjusting the position of the first air guide plate. Compared with the prior art, the air guiding structure can cope with changes in the air volume of the bottom air inlet. For example, for a large amount of oil fume at the bottom air inlet, the air intake area of the bottom air inlet can be increased to quickly extract the oil fume; for a small amount of oil fume at the bottom air inlet, the air intake area of the bottom air inlet can be decreased to achieve a throttling effect.
[0021] The range hood provided in the second aspect of this utility model has the air guiding structure provided in the first aspect of this utility model. When it is necessary to clean the first air guiding plate and the second air guiding plate, the first air guiding plate and the second air guiding plate can be directly removed for easy cleaning. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 A three-dimensional structural diagram of a range hood provided for an embodiment of this utility model;
[0024] Figure 2 A side view of a range hood provided for an embodiment of this utility model;
[0025] Figure 3 A partial structural schematic diagram of a range hood provided for an embodiment of this utility model;
[0026] Figure 4 A partial cross-sectional view of a range hood provided for an embodiment of this utility model;
[0027] Figure 5 A partially enlarged view of the front end of a smoke collection hood provided for an embodiment of this utility model;
[0028] Figure 6 A side view of a range hood provided in an embodiment of this utility model Figure 1 ;
[0029] Figure 7 A side view of a range hood provided in an embodiment of this utility model Figure 2 ;
[0030] Figure 8A side view of a range hood provided in an embodiment of this utility model Figure 3 ;
[0031] Figure 9 A side view of a range hood provided in an embodiment of this utility model Figure 4 ;
[0032] Figure 10 A front view of a range hood provided in an embodiment of this utility model Figure 1 ;
[0033] Figure 11 A front view of a range hood provided in an embodiment of this utility model Figure 2 ;
[0034] Figure 12 A front view of a range hood provided in an embodiment of this utility model Figure 3 ;
[0035] Figure 13 A front view of a range hood provided in an embodiment of this utility model Figure 4 ;
[0036] Figure 14 A front view of a range hood provided in an embodiment of this utility model Figure 5 ;
[0037] Figure 15 A front view of a range hood provided in an embodiment of this utility model Figure 6 ;
[0038] Figure 16 A front view of a range hood provided in an embodiment of this utility model Figure 7 ;
[0039] Figure 17 This is a three-dimensional structural diagram of a second air guide plate provided in an embodiment of the present utility model.
[0040] Icons: 1-First air guide plate; 2-Second air guide plate; 21-Hook; 22-Ball contact head; 3-Bottom air inlet; 4-First driver; 5-Top air inlet; 6-Side air inlet; 7-Third air guide plate; 8-Second driver; 9-Fourth air guide plate; 10-Third driver; 011-Smoke hood; 012-Back plate; 013-Pin screw; 014-First sensor; 015-Second sensor; 016-Third sensor; 017-Fourth sensor; 018-Control button; 019-Arc-shaped connector; 020-Main unit. Detailed Implementation
[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0044] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0045] The first aspect of this utility model provides an air guiding structure, such as Figure 1 As shown, it includes a first air guide plate 1, a second air guide plate 2, and a housing. The second air guide plate 2 is installed on the housing and is set higher than the first air guide plate 1. The bottom end of the first air guide plate 1 forms a bottom air inlet 3 between it and the housing. The top end of the first air guide plate 1 is movably engaged with the second air guide plate 2 to adjust the air inlet area of the bottom air inlet 3.
[0046] When the amount of oil fumes at the bottom air inlet 3 is large, the air intake area of the bottom air inlet 3 can be increased by adjusting the position of the second air guide plate 2 relative to the first air guide plate 1, so as to quickly extract the oil fumes at the bottom air inlet 3; when the amount of oil fumes at the bottom air inlet 3 is small, the air intake area of the bottom air inlet 3 can be reduced by adjusting the position of the second air guide plate 2 relative to the first air guide plate 1, so as to achieve the effect of throttling.
[0047] Therefore, the air guiding structure provided by the first aspect of this utility model can cope with changes in the air volume at the bottom air inlet, thereby accelerating the exhaust of oil fumes or throttling the flow.
[0048] Among them, such as Figure 1 As shown, the housing may include a smoke hood 011 and a back plate 012. The smoke hood 011 has a front end facing the user and a rear end facing away from the user. The top of the back plate 012 is connected to the rear end of the smoke hood 011.
[0049] like Figure 2 As shown, the top of the back plate 012 is connected to the rear end of the smoke hood 011 in an "L" shape. The back plate 012 and the smoke hood 011 can be connected vertically. The top of the smoke hood 011 is connected to the main unit 020.
[0050] like Figure 2 As shown, the second air guide plate 2 can be arranged vertically opposite to the smoke collection hood 011 and the two can be detachably connected, and the first air guide plate 1 can be arranged front-to-back opposite to the back plate 012.
[0051] The detachable connection between the second air guide plate 2 and the smoke hood 011 can be achieved through a snap-fit structure, a hook structure, or other means.
[0052] The top surface of the second air guide plate 2 is detachably connected to the smoke hood 011 via a hook structure and a ball-bearing structure. For example... Figure 17 As shown, the top surface of the second air guide plate 2 is provided with two hooks 21 and two ball-shaped heads 22. The two hooks 21 are located at the end of the second air guide plate 2 near the back plate 012, and the two ball-shaped heads 22 are located at the end of the second air guide plate 2 away from the back plate 012.
[0053] During installation, the two hooks 21 can be hooked onto the suspension of the smoke hood 011, and the two ball bearings 22 can be locked onto the ball bearing seat of the smoke hood 011.
[0054] There are several ways in which the top end of the first air guide plate 1 and the second air guide plate 2 can be movably connected. For example, the top end of the first air guide plate 1 and the second air guide plate 2 can be rotatably connected, or the top end of the first air guide plate 1 and the second air guide plate 2 can be slidably connected, and so on.
[0055] In alternative implementations, such as Figure 2 As shown, the top of the first air guide plate 1 is rotatably connected to the second air guide plate 2.
[0056] In the above embodiments, the air intake area of the bottom air inlet 3 can be adjusted by rotating the first air guide plate 1, which makes the structure simpler.
[0057] Specifically, the top of the first air guide plate 1 is hinged to the second air guide plate 2. The rotation of the first air guide plate 1 relative to the second air guide plate 2 can be achieved manually or automatically.
[0058] In optional implementations, for ease of use by the user, such as Figure 2 As shown, the air guiding structure also includes a first driver 4, which is connected between the first air guide plate 1 and the outer casing. The first driver 4 is used to drive the first air guide plate 1 to rotate relative to the second air guide plate 2.
[0059] The first driver 4 is configured to enable the first air guide plate 1 to rotate automatically relative to the second air guide plate 2, eliminating the need for manual adjustment by the user and manual fixing of the first air guide plate 1 in the desired position, thereby improving the adjustment efficiency of the first air guide plate 1 and reducing the difficulty of operation for the user.
[0060] It should be noted that any structure capable of driving the first air guide plate 1 to rotate relative to the second air guide plate 2 can be the first driver 4 mentioned in the above embodiments. For example, the first driver 4 may include a rotary motor that drives the first air guide plate 1 to rotate relative to the second air guide plate 2, or the first driver 4 may include a pneumatic cylinder, a hydraulic cylinder, or an electric push rod that drives the first air guide plate 1 to rotate relative to the second air guide plate 2 through telescopic movement, and so on.
[0061] like Figure 2 As shown, the first driver 4 uses an electric push rod. One end of the electric push rod is hinged to the first air guide plate 1, and the other end can be hinged to the back plate 012 of the housing.
[0062] It is understandable that the bottom air inlet 3 is formed between the bottom edge of the first air guide plate 1 and the back plate 012.
[0063] In an optional embodiment, the first driver 4 may be configured to cause the bottom edge of the first air guide plate 1 to abut against the back plate 012 when retracted, so that the air intake of the bottom air inlet 3 is 0.
[0064] like Figure 3 As shown, the first air guide plate 1 can be connected to the first driver 4 by a pin screw 013. After removing the pin screw 013, the first air guide plate 1 flips upward and folds into one piece with the second air guide plate 2. After removing the second air guide plate 2 from the smoke collection hood 011, the first air guide plate 1 and the second air guide plate 2 can be cleaned.
[0065] In alternative implementations, such as Figure 2 and Figure 4 As shown, the second air guide plate 2 and the smoke collection hood 011 of the outer shell have a top air inlet 5 and a side air inlet 6. The top air inlet 5 is located at the front end of the second air guide plate 2 away from the first air guide plate 1, and the side air inlet 6 is located on the side of the second air guide plate 2.
[0066] The above-described implementation method allows oil fumes to enter the range hood not only through the bottom air inlet 3, but also through the top air inlet 5 and the side air inlet 6, thus sucking up oil fumes from different locations, resulting in better smoke exhaust and reducing the escape of oil fumes.
[0067] In alternative implementations, such as Figure 4 As shown, the air guiding structure also includes a third air guiding plate 7 disposed on at least one side of the second air guiding plate 2. The third air guiding plate 7 is movably connected to the smoke hood 011. A side air inlet 6 is formed between the third air guiding plate 7 and the second air guiding plate 2. The third air guiding plate 7 is used to adjust the air inlet area of the side air inlet 6.
[0068] In the above embodiments, not only is the air intake area of the bottom air inlet 3 adjustable, but the air intake area of the side air inlet 6 can also be adjusted, so that the entire air guiding structure can flexibly adjust the air intake volume in different directions and positions. This design can dynamically optimize the suction strategy according to the actual distribution of oil fumes, thereby improving the smoke extraction effect.
[0069] In alternative implementations, such as Figure 4 As shown, third air guide plates 7 are provided on both sides of the second air guide plate 2, thereby adjusting the air intake area of the side air inlets 6 on both sides of the second air guide plate 2.
[0070] The adjustment of the position of the first air guide plate 1 relative to the second air guide plate 2 can be done manually or automatically.
[0071] In optional implementations, for ease of use by the user, such as Figure 4 As shown, the air guiding structure also includes a second driver 8, which is connected between the third air guide plate 7 and the smoke hood 011. The second driver 8 is used to drive the third air guide plate 7 to adjust the air intake area of the side air inlet 6.
[0072] The second drive 8 enables the third air guide plate 7 to automatically adjust its position relative to the second air guide plate 2, eliminating the need for manual adjustment by the user and manual fixing of the third air guide plate 7 in the desired position. This improves the adjustment efficiency of the third air guide plate 7 and reduces the difficulty of operation for the user.
[0073] The optional structures of the second driver 8 are similar to those of the first driver 4, and will not be listed here again to save space.
[0074] like Figure 4 As shown, the second drive 8 is an electric push rod, the third air guide plate 7 is hinged to the smoke collection hood 011, one end of the electric push rod is hinged to the third air guide plate 7, and the other end can be hinged to the smoke collection hood 011 of the range hood.
[0075] In an optional embodiment, the second driver 8 may be configured to cause the bottom edge of the third air guide plate 7 to abut against the side edge of the second air guide plate 2 when retracted, so that the air intake of the side air inlet 6 is 0.
[0076] In alternative implementations, such as Figure 2 As shown, the air guiding structure also includes a fourth air guiding plate 9 that is movably connected to the smoke hood 011. A top air inlet 5 is formed between the fourth air guiding plate 9 and the second air guiding plate 2. The fourth air guiding plate 9 is used to adjust the air inlet area of the top air inlet 5.
[0077] The above-described implementation method can also adjust the air intake area of the top air inlet 5. For example, when used in conjunction with the third air guide plate 7 and the first air guide plate 1, the air intake areas on the upper, lower, left and right sides of the air inlet can be adjusted independently to achieve the best smoke extraction effect.
[0078] The adjustment of the position of the fourth air guide plate 9 relative to the second air guide plate 2 can be done manually or automatically.
[0079] In optional implementations, for ease of use by the user, such as Figure 2 As shown, the air guide structure also includes a third driver 10, which is connected between the fourth air guide plate 9 and the housing. The third driver 10 is used to drive the fourth air guide plate 9 to adjust the air intake area of the top air inlet 5.
[0080] The third drive 10 enables the fourth air guide plate 9 to automatically adjust its position relative to the second air guide plate 2, eliminating the need for manual adjustment by the user and manual fixing of the fourth air guide plate 9 to the desired position. This improves the adjustment efficiency of the fourth air guide plate 9 and reduces the difficulty of operation for the user.
[0081] The optional structure of the third driver 10 is similar to that of the optional structure of the first driver 4. To save space, they will not be listed one by one here.
[0082] The third actuator 10 uses an electric push rod, such as Figure 5 As shown, the fourth air guide plate 9 is hinged to the smoke collection hood 011. One end of the electric push rod is hinged to the fourth air guide plate 9 through the arc-shaped connector 019, and the other end can be hinged to the smoke collection hood 011 of the range hood.
[0083] Specifically, the two ends of the arc-shaped connector 019 are hinged to the electric push rod and the fourth air guide plate 9, respectively. The arc-shaped connector 019 can increase the opening and closing angle of the fourth air guide plate 9.
[0084] In an optional implementation, the lateral width of the fourth air guide plate 9 is designed to be equal to the width of the second air guide plate 2, and the height of the fourth air guide plate 9 is designed to be such that after the fourth air guide plate 9 rotates at a certain angle, it can abut against the end of the second air guide plate 2 that is away from the first air guide plate 1, so that the air intake of the top air inlet 5 is 0.
[0085] The initial position of the fourth air guide plate 9 can be set vertically and fit against the front of the smoke collection hood 011. The fourth air guide plate 9 is designed to open and close at an angle greater than 180°, so that when the front fourth air guide plate 9 is fully opened, it can be flipped outward to increase the smoke collection effect.
[0086] In an optional embodiment, the air guide structure further includes a sensor assembly mounted on the second air guide plate 2, the sensor assembly being used to detect the oil fume concentration of at least one of the bottom air inlet 3, the top air inlet 5, and the side air inlet 6.
[0087] The sensor assembly can detect the oil fume concentration of at least one of the bottom air inlet 3, top air inlet 5, and side air inlet 6. A large oil fume concentration value indicates a large air volume requirement at the corresponding location, while a small oil fume concentration value indicates a small air volume requirement at the corresponding location. In this way, the size of the air intake area at the corresponding location can be controlled according to the oil fume concentration.
[0088] In an optional embodiment, the air guide structure also includes a controller connected to the sensor assembly, which is used to adjust the air intake area of the bottom air inlet 3, the top air inlet 5 and the side air inlet 6 according to the oil fume concentration information detected by the sensor assembly.
[0089] The above settings enable the air guide structure to automatically adjust the air intake area of the bottom air inlet 3, top air inlet 5, and side air inlet 6 according to the oil fume concentration information, making the air guide structure more intelligent.
[0090] It is understood that the controller can be electrically connected to the first driver 4, the second driver 8 and the third driver 10, and adjust the air intake area of the bottom air inlet 3, the top air inlet 5 and the side air inlet 6 by controlling the state of the first driver 4, the second driver 8 and the third driver 10.
[0091] In an optional implementation, the sensor assembly includes a first sensor 014, a second sensor 015, a third sensor 016, and a fourth sensor 017; as shown Figure 2 As shown, the first sensor 014 is located at the end of the second air guide plate 2 away from the first air guide plate 1, that is, the end near the top air inlet 5, and is used to detect the oil fume concentration value at the top air inlet 5; Figure 2 As shown, the second sensor 015 is located at one end of the second air guide plate 2 near the first air guide plate 1, and is used to detect the concentration of oil fumes entering from the bottom air inlet 3; Figure 4As shown, the third sensor 016 is disposed on the left side of the second air deflector 2 for detecting the oil fume concentration value of the side air inlet 6 on one side of the second air deflector 2; as Figure 4 shown, the fourth sensor 017 is disposed on the right side of the second air deflector 2 for detecting the oil fume concentration value of the side air inlet 6 on the other side of the second air deflector 2.
[0092] Let N1, N2, N3, and N4 be the oil fume concentration values detected by the first sensor 014, the second sensor 015, the third sensor 016, and the fourth sensor 017 respectively, and the total air volume of the fan remains unchanged. The following content specifically describes the specific working process of the range hood.
[0093] During use, the air inlet around the second air deflector 2 converges into the space between the second air deflector 2 and the smoke collecting hood 011 and then is discharged outdoors; no air inlet openings need to be provided on the smoke collecting hood 011 and the back plate 012.
[0094] As Figure 6 shown, after starting up, the first air deflector 1 and the fourth air deflector 9 are both opened to the maximum, and the two third air deflectors 7 remain stationary in the vertical position;
[0095] I. Automatic control mode of the first air deflector 1 and the fourth air deflector 9:
[0096] (1) When 0 < ∣N2 - N1∣ < A (constant value), it is determined that the required air volumes of the bottom air inlet 3 and the top air inlet 5 do not change much, and the first air deflector 1 and the fourth air deflector 9 do not act, see Figure 6 ;
[0097] (2) When A < N2 - N1 < B (constant value), it is determined that the demand for the top air inlet 5 is small, the fourth air deflector 9 acts, and the opening degree is reduced for throttling, and the air volume at the corresponding bottom air inlet 3 increases, see Figure 7 ;
[0098] (3) When B < N2 - N1, it is determined that the air volume demand for the top air inlet 5 is almost zero, and the opening degree of the fourth air deflector 9 is adjusted to the minimum state, with the bottom air inlet 3 as the main air inlet, see Figure 8 ;
[0099] (4) When A < N1 - N2, the opening degree of the first air deflector 1 is reduced until it reaches the minimum position, see Figure 9 ;
[0100] (5) When 0 < ∣N2 - N1∣ < A, and N2, N1 are greater than N3, N4, it is determined that the air volume demands for the bottom air inlet 3 and the top air inlet 5 are greater. On the basis of Figure 6 , the opening degrees of the two third air deflectors 7 are appropriately reduced (the left third air deflector 7 moves to the right, and the right third air deflector 7 moves to the left), see Figure 10 .
[0101] (6) When N1, N2, N3, and N4 are close and all have relatively large numerical values, it can be determined that the air volume requirements of the bottom air inlet 3, the top air inlet 5, and the two side air inlets 6 are all large. The opening degrees of the first air guide plate 1, the fourth air guide plate 9, and the two third air guide plates 7 can be appropriately increased until they reach the maximum. Refer to Figure 6 and Figure 11 ;
[0102] (7) Other states will not be enumerated. The opening degrees of the first air guide plate 1, the fourth air guide plate 9, and the two third air guide plates 7 can be manually adjusted according to the actual state.
[0103] II. Automatic control method for the two third air guide plates 7 on the left and right:
[0104] (1) When 0 < ∣N3 - N4∣ < A (a fixed value), it is determined that the change in the air volume requirements of the left and right side air inlets 6 is not significant, and the two third air guide plates 7 do not move. Refer to Figure 4 ;
[0105] (2) When A < N3 - N4 < B, it is determined that the air volume requirement of the left side air inlet 6 is greater. The third air guide plate 7 on the left moves to the left, and its opening degree increases. The third air guide plate 7 on the right moves slightly to the left to reduce the opening degree. Refer to Figure 12 ;
[0106] (3) When B < N3 - N4, it is determined that the air volume requirement of the left side air inlet 6 is extremely large. The third air guide plate 7 on the left moves to the left, and its opening degree reaches the maximum. The third air guide plate 7 on the right moves to the left, and its opening degree is reduced to the minimum. Refer to Figure 13 ;
[0107] (4) When A < N4 - N3 < B, it is determined that the air volume requirement of the right side air inlet 6 is greater. The third air guide plate 7 on the right moves to the right, and its opening degree increases. The third air guide plate 7 on the left moves slightly to the right to reduce the opening degree. See Figure 14 ;
[0108] (5) When B < N3 - N4, it is determined that the air volume requirement of the right side air inlet 6 is extremely large. The third air guide plate 7 on the right moves to the left, and its opening degree reaches the maximum. The third air guide plate 7 on the left moves to the right, and its opening degree is reduced to the minimum; see Figure 15 ;
[0109] (6) When 0 < ∣N3 - N4∣ < A and N3, N4 are greater than N1, N2, it is determined that the air volume requirements of the two side air inlets 6 are greater. The third air guide plate 7 on the right moves to the right, and its opening degree increases. At the same time, the third air guide plate 7 on the left moves to the left, and its opening degree increases until it reaches the maximum. At the same time, the opening degrees of the first air guide plate 1 and the fourth air guide plate 9 are reduced. See Figure 16 ;
[0110] (7) Other states will not be listed. The opening of the two third air guides 7 can be manually adjusted according to the actual state.
[0111] The aforementioned fixed values A and B can be set according to the actual situation.
[0112] The second aspect of this utility model provides a range hood, which includes the above-mentioned air guiding structure; the second air guiding plate 2 is detachably connected to the smoke collection hood 011; the first air guiding plate 1 is detachably connected to the back plate 012 via the first driver 4, and the first driver 4 is used to drive the first air guiding plate 1 to rotate relative to the second air guiding plate 2.
[0113] The range hood provided in the second aspect of this utility model has the above-mentioned air guiding structure. When it is necessary to clean the first air guiding plate 1 and the second air guiding plate 2, the first air guiding plate 1 and the second air guiding plate 2 can be directly removed for easy cleaning.
[0114] In alternative implementations, such as Figure 16 As shown, the front surface of the fume hood 011 is equipped with control buttons 018, which include five buttons: "Auto," "Front," "Rear," "Left," and "Right." The "Auto" button is surrounded by the four "Front," "Rear," "Left," and "Right" buttons. Pressing the "Auto" button will automatically control the opening of the first air guide plate 1, the fourth air guide plate 9, and the two third air guide plates 7 based on the oil fume concentration values detected by the first sensor 014, the second sensor 015, the third sensor 016, and the fourth sensor 017. In manual mode, pressing the "Front," "Rear," "Left," and "Right" buttons allows the user to manually operate the opening of the first air guide plate 1, the fourth air guide plate 9, and the two third air guide plates 7.
[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An air guiding structure, characterized in that, It includes a first air guide plate (1), a second air guide plate (2) and a housing. The second air guide plate (2) is installed on the housing and is set higher than the first air guide plate (1). The bottom end of the first air guide plate (1) forms a bottom air inlet (3) between the bottom end of the first air guide plate (1) and the housing. The top end of the first air guide plate (1) is movably engaged with the second air guide plate (2) to adjust the air inlet area of the bottom air inlet (3).
2. The air guiding structure according to claim 1, characterized in that, The top end of the first air guide plate (1) is rotatably connected to the second air guide plate (2).
3. The air guiding structure according to claim 2, characterized in that, The air guide structure also includes a first driver (4), which is connected between the first air guide plate (1) and the outer casing. The first driver (4) is used to drive the first air guide plate (1) to rotate relative to the second air guide plate (2).
4. The air guiding structure according to claim 1, characterized in that, The second air guide plate (2) has a top air inlet (5) and a side air inlet (6) between it and the outer shell. The top air inlet (5) is located at the front end of the second air guide plate (2) away from the first air guide plate (1), and the side air inlet (6) is located on the side of the second air guide plate (2).
5. The air guiding structure according to claim 4, characterized in that, The air guiding structure also includes a third air guiding plate (7) disposed on at least one side of the second air guiding plate (2). The third air guiding plate (7) is movably connected to the outer shell. The side air inlet (6) is formed between the third air guiding plate (7) and the second air guiding plate (2). The third air guiding plate (7) is used to adjust the air inlet area of the side air inlet (6).
6. The air guiding structure according to claim 5, characterized in that, The air guide structure also includes a second driver (8), which is connected between the third air guide plate (7) and the outer casing. The second driver (8) is used to drive the third air guide plate (7) to adjust the air intake area of the side air inlet (6).
7. The air guiding structure according to claim 4, characterized in that, The air guiding structure also includes a fourth air guiding plate (9) that is movably connected to the outer shell. The top air inlet (5) is formed between the fourth air guiding plate (9) and the second air guiding plate (2). The fourth air guiding plate (9) is used to adjust the air inlet area of the top air inlet (5).
8. The air guiding structure according to claim 7, characterized in that, The air guide structure also includes a third driver (10), which is connected between the fourth air guide plate (9) and the outer casing. The third driver (10) is used to drive the fourth air guide plate (9) to adjust the air intake area of the top air inlet (5).
9. The air guiding structure according to claim 4, characterized in that, The air guide structure also includes a sensor assembly installed on the second air guide plate (2), the sensor assembly being used to detect the oil fume concentration of at least one of the bottom air inlet (3), the top air inlet (5) and the side air inlet (6); The air guide structure also includes a controller connected to the sensor assembly, which is used to adjust the air intake area of the bottom air inlet (3), the top air inlet (5) and the side air inlet (6) according to the oil fume concentration information detected by the sensor assembly.
10. A range hood, characterized in that, Including the air guiding structure as described in any one of claims 1-9, the outer casing includes a smoke hood (011) and a back plate (012). The second air guide plate (2) is detachably connected to the smoke collection hood (011); The first air guide plate (1) is detachably connected to the back plate (012) via the first driver (4), and the first driver (4) is used to drive the first air guide plate (1) to rotate relative to the second air guide plate (2).