Smoke collecting device and range hood

Abstract

The utility model provides a kind of smoke collecting device and extractor hood, it is related to the technical field of kitchen appliance, smoke collecting device includes: smoke collecting cover, smoke collecting cover is provided with the total air inlet connected with fan assembly;Smoke baffle part, smoke baffle part is connected in the below of smoke collecting cover;Smoke baffle part includes two smoke baffle components arranged relative to total air inlet center line left and right;Smoke baffle component is rotatably connected with smoke collecting cover at hinged point, and outer side opening and inner side opening respectively located left and right sides of hinged point are provided on smoke baffle part, and smoke baffle component includes inner baffle structure and outer baffle structure respectively located left and right sides of hinged point, and inner baffle structure can close inner side opening, and inner baffle structure can close outer side opening;Driving device is provided between smoke baffle component and smoke collecting cover, and driving device is used to drive smoke baffle component to rotate, and changes the opening of outer side opening and inner side opening.

Description

Technical Field

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

[0002] Fume extraction devices are indispensable electrical appliances in modern kitchens. Their main function is to use negative pressure generated by a fan to collect and expel pollutants such as fumes and steam produced during cooking, thereby maintaining clean kitchen air. With the improvement of people's living standards and increased emphasis on a healthy environment, fume extraction devices are becoming increasingly popular in both residential and commercial kitchens.

[0003] Traditional kitchen fume treatment devices typically consist of basic components such as a housing, a fan system, a filter, and a control system. During operation, the fan generates suction, which guides airflow through a fixed-angle baffle, drawing cooking fumes into the device. After filtration, the fumes are expelled outdoors. To address variations in fume volume under different cooking intensities, current technology primarily controls airflow by adjusting the fan speed; users can select different operating modes, such as "high" or "low," as needed.

[0004] However, this design has obvious limitations. Because the angle and opening / closing method of the baffle are fixed, it cannot be dynamically adjusted according to the distribution and diffusion direction of oil fumes during actual cooking. Utility Model Content

[0005] The purpose of this utility model is to provide a smoke collection device and a range hood to alleviate the technical problem that existing range hoods cannot adjust the negative pressure position according to the distribution of oil smoke concentration, resulting in oil smoke escape and poor smoke extraction effect.

[0006] In a first aspect, the present invention provides a smoke collection device, comprising: A smoke hood, wherein the smoke hood is provided with a main air inlet connected to the fan assembly; A smoke-blocking part, which is connected to the lower part of the smoke collection hood; The smoke-blocking part includes two smoke-blocking components arranged to the left and right relative to the center line of the main air inlet; the smoke-blocking components are rotatably connected to the smoke collection hood at the hinge point, and the smoke-blocking part is provided with an outer opening and an inner opening located on the left and right sides of the hinge point respectively. The smoke-blocking components include an inner baffle structure and an outer baffle structure located on the left and right sides of the hinge point respectively. The inner baffle structure can close the inner opening and the outer opening respectively. A driving device is provided between the smoke-blocking component and the smoke collection hood. The driving device is used to drive the smoke-blocking component to rotate, thereby changing the opening degree of the outer opening and the inner opening.

[0007] Furthermore, the inner baffle structure and the outer baffle structure are integrally formed; The inner baffle structure and the outer baffle structure are set at an angle, and the angle between the two facing the stove is greater than 180°, so that the opening of the outer opening and the inner opening have the same trend. Furthermore, the inner baffle structure and the outer baffle structure are separately configured, and both the inner baffle structure and the outer baffle structure can rotate independently relative to the smoke collection hood; The driving device includes a first driving mechanism connected to the inner baffle structure, used to drive the inner baffle structure to rotate independently; The driving device includes a second driving mechanism connected to the outer baffle structure, used to drive the outer baffle structure to rotate independently.

[0008] Furthermore, both the inner baffle structure and the outer baffle structure are rotatably connected to the smoke collection hood via a rotating shaft; The inner baffle structure and the outer baffle structure are rotatably connected on the same rotating shaft; or, the inner baffle structure and the outer baffle structure are rotatably connected to the smoke collection hood via two rotating shafts respectively.

[0009] Furthermore, when the inner baffle structure is in the closed state, the inner baffle structure blocks the inner opening; when the inner baffle structure is in the open state, the inner opening is open, and the inner baffle structure swings into the main air inlet, dividing the main air inlet into two air guides, left and right. In the left-right direction, the area of ​​the air guide on the same side as the inner baffle structure is smaller than the area of ​​the air guide on the opposite side.

[0010] Furthermore, when the inner baffle structure is in the open state, the lower surface of the inner baffle structure faces the smoke-blocking assembly on the opposite side of the side where the inner baffle structure is located, and the distance between the lower surface of the inner baffle structure and the center line of the main air inlet gradually decreases in the upward direction; along the left-right direction, an eccentric smoke-collecting cavity is formed between the lower surface of the inner baffle structure and the side wall of the smoke collection hood on the opposite side of the side where the inner baffle structure is located.

[0011] Furthermore, the smoke-blocking part also includes a fixed baffle, which is connected to the smoke collection hood and located directly below the main air inlet; The gap between the hinge point of the fixed baffle and the inner baffle structure forms the inner opening.

[0012] Furthermore, when the outer baffle structure is in the open state, the free end of the outer baffle structure is spaced apart from the smoke collection hood, and the outer opening is formed between the free end of the outer baffle structure and the smoke collection hood; When the outer baffle structure is in the closed state, the outer baffle structure abuts against the bottom surface of the smoke collection hood to close the outer opening.

[0013] Furthermore, smoke sensors are provided at both the inner and outer openings to detect the smoke concentration at each opening. The smoke sensors and the driving device are both connected to the controller of the range hood.

[0014] Secondly, the present invention provides a range hood that includes the aforementioned smoke collection device.

[0015] This utility model has at least the following advantages or beneficial effects: The smoke collection device provided by this utility model includes a smoke collection hood and a smoke baffle. The smoke collection hood is provided with a main air inlet connected to a fan assembly. The smoke baffle is connected to the bottom of the smoke collection hood. The smoke baffle includes two smoke baffle components arranged to the left and right of the center line of the main air inlet. The smoke baffle components are rotatably connected to the smoke collection hood at a hinge point. The smoke baffle is provided with an outer opening and an inner opening located on the left and right sides of the hinge point, respectively. The smoke baffle includes an inner baffle structure and an outer baffle structure located on the left and right sides of the hinge point, respectively. The inner baffle structure can close the inner opening and the outer opening. A driving device is provided between the smoke baffle components and the smoke collection hood. The driving device is used to drive the smoke baffle components to rotate and change the opening degree of the outer opening and the inner opening.

[0016] Two smoke-blocking components correspond to the left and right burners respectively. Each smoke-blocking component has an inner opening on both sides of its hinge point, close to the center line of the main air inlet, and an outer opening away from the center line of the main air inlet. Depending on the distribution of cooking fumes, the opening degrees of the outer and inner openings on the left and right sides can be controlled, thus concentrating the negative pressure generated by the fan at one or more specific openings for precise smoke extraction. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of the range hood provided in Embodiment 1 of this utility model; Figure 2 A schematic diagram of the range hood provided in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of step S11 in the range hood control method provided in Embodiment 3 of this utility model; Figure 4 This is a schematic diagram of step S12 in the range hood control method provided in Embodiment 3 of this utility model; Figure 5 This is a schematic diagram of step S121 in the range hood control method provided in Embodiment 3 of this utility model; Figure 6 This is a schematic diagram of step S122 in the range hood control method provided in Embodiment 3 of this utility model; Figure 7 This is a schematic diagram of step S123 in the range hood control method provided in Embodiment 3 of this utility model; Figure 8 This is a schematic diagram of step S1221 in the range hood control method provided in Embodiment 3 of this utility model; Figure 9 This is a schematic diagram of step S1222 in the range hood control method provided in Embodiment 3 of this utility model; Figure 10 This is a schematic diagram of step S12231 in the range hood control method provided in Embodiment 3 of this utility model; Figure 11 This is a schematic diagram of step S21 in the range hood control method provided in Embodiment 3 of this utility model; Figure 12 This is a schematic diagram of step S22 in the range hood control method provided in Embodiment 3 of this utility model; Figure 13 This is a schematic diagram of step S23 in the range hood control method provided in Embodiment 3 of this utility model; Figure 14 This is a schematic diagram of step S221 in the range hood control method provided in Embodiment 3 of this utility model; Figure 15 This is a schematic diagram of step S222 in the range hood control method provided in Embodiment 3 of this utility model; Figure 16 This is a schematic diagram of step S2221 in the range hood control method provided in Embodiment 3 of this utility model; Figure 17 This is a schematic diagram of step S2222 in the range hood control method provided in Embodiment 3 of this utility model; Figure 18 This is a schematic diagram of step S2223 in the range hood control method provided in Embodiment 3 of this utility model; Figure 19This is a schematic diagram of step S22211 in the range hood control method provided in Embodiment 3 of this utility model; Figure 20 This is a schematic diagram of step S22212 in the range hood control method provided in Embodiment 3 of this utility model; Figure 21 This is a schematic diagram of step S231 in the range hood control method provided in Embodiment 3 of this utility model; Figure 22 This is a schematic diagram of step S232 in the range hood control method provided in Embodiment 3 of this utility model; Figure 23 This is a schematic diagram of step S233 in the range hood control method provided in Embodiment 3 of this utility model; Figure 24 This is a schematic diagram of step S2311 in the range hood control method provided in Embodiment 3 of this utility model; Figure 25 This is a schematic diagram of step S2312 in the range hood control method provided in Embodiment 3 of this utility model; Figure 26 This is a schematic diagram of step S2313 in the range hood control method provided in Embodiment 3 of this utility model; Figure 27 This is a schematic diagram of step S23111 in the range hood control method provided in Embodiment 3 of this utility model; Figure 28 This is a schematic diagram of step S23112 in the range hood control method provided in Embodiment 3 of this utility model; Figure 29 This is a schematic diagram of step S23113 in the range hood control method provided in Embodiment 3 of this utility model.

[0019] Icons: 100 - Smoke hood; 110 - Main air inlet; 120 - Side wall; 210 - Inner baffle structure; 220 - Outer baffle structure; 310 - First opening; 320 - Second opening; 330 - Third opening; 340 - Fourth opening; 400-fan; 510 - First drive mechanism; 520 - Second drive mechanism; 530 - Support; 540 - Rotating shaft; 600-Fixed baffle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0026] like Figure 1 As shown, the range hood provided by this utility model includes: a smoke collection hood 100, wherein the smoke collection hood 100 is provided with a main air inlet 110 connected to a fan assembly; the smoke collection hood 100 may be a concave cavity with an upwardly recessed shape; in the left-right direction, side walls 120 are connected to the left and right sides of the bottom surface of the cavity, and the side walls 120 smoothly transition to the bottom surface. The main air inlet 110 is located at the middle position of the bottom surface of the cavity.

[0027] The range hood also includes a smoke-blocking section, which is connected below the smoke collection hood 100 and located between the two side walls 120.

[0028] The smoke-blocking section includes two smoke-blocking components arranged symmetrically to the left and right of the center line of the main air inlet 110. The two smoke-blocking components can have the same or different structures. The smoke-blocking components are rotatably connected to the smoke collection hood 100 via a rotating shaft 540. The smoke-blocking section is provided with outer openings and inner openings located on the left and right sides of the rotating shaft 540, respectively. The smoke-blocking components include an inner baffle structure 210 and an outer baffle structure 220 located on the left and right sides of the rotating shaft 540, respectively. The inner baffle structure 210 can close the inner opening, and the inner baffle structure 220 can close the outer opening.

[0029] The outer baffle structure 220 is spaced apart from the center line of the main air inlet 110 and the smoke collection hood 100 to form an outer opening that connects to the main air inlet 110. Oil fumes can enter the area between the smoke baffle and the main air inlet 110 from the left and right sides of the smoke baffle and then enter the main air inlet 110.

[0030] The smoke-blocking part also includes a fixed baffle 600, which is fixedly connected to the smoke collection hood 100 and located directly below the main air inlet 110; the gap between the fixed baffle 600 and the rotating shaft 540 of the smoke-blocking assembly forms the inner opening.

[0031] When the inner baffle structure 210 rotates to a horizontal position, it connects with the fixed baffle 600, closing the inner opening. The fixed baffle 600 separates the two inner openings, maintaining a certain distance between them, while ensuring the distance between the inner and outer openings is not too great. The evenly distributed outer and inner openings on the left and right sides prevent the concentration of negative pressure control areas.

[0032] In this embodiment, the inner baffle structure 210 and the outer baffle structure 220 are separately configured, and both the inner baffle structure 210 and the outer baffle structure 220 can rotate independently relative to the smoke collection hood 100; the driving device includes a first driving mechanism 510 connected to the inner baffle structure 210 for driving the inner baffle structure 210 to rotate independently; the driving device includes a second driving mechanism 520 connected to the outer baffle structure 220 for driving the outer baffle structure 220 to rotate independently.

[0033] The smoke-blocking part specifically includes a bracket 530 and a rotating shaft 540. The upper end of the bracket 530 is connected to the smoke collection hood 100, and the lower end is connected to the rotating shaft 540. The inner baffle structure 210 and the outer baffle structure 220 are both rotatably connected to the same rotating shaft 540. The first driving mechanism 510 may include a motor and a linkage assembly. The drive shaft of the motor is connected to the inner baffle structure 210 through the linkage assembly to drive the inner baffle structure 210 to swing up and down.

[0034] When the inner baffle structure 210 is in the closed state, it is horizontally positioned and blocks the inner opening. When the inner baffle structure 210 is in the open state, it swings upward around the pivot 540, opening the inner opening and swinging into the main air inlet 110, dividing it into left and right air guides.

[0035] When the inner baffle structure 210 is in the open state, in the left-right direction, the area of ​​the air guide on the same side as the inner baffle structure 210 is smaller than the area of ​​the air guide on the opposite side. Since the two smoke-blocking components are symmetrically arranged, taking the left smoke-blocking component as an example, when the left inner baffle structure 210 is in the open state, the main air inlet 110 is divided into left and right air guides. Furthermore, the area of ​​the air guide on the same side as the left inner baffle structure 210 (i.e., the left air guide) is smaller than the area of ​​the air guide on the opposite side (i.e., the right air guide). Therefore, the negative pressure allocated to the right side will increase. In practical scenarios, this corresponds to cooking using the right burner, which generates a lot of fumes during cooking; therefore, it is necessary to concentrate the negative pressure on the right side.

[0036] When both inner baffle structures 210 are in the open state, the main air inlet 110 will be divided into three parts, and the areas of the three parts can be set to be equal.

[0037] Furthermore, when the left inner baffle structure 210 is in the open state, the lower surface of the left inner baffle structure 210 faces the side wall 120 (i.e., the right side wall 120) opposite to the side where the inner baffle structure 210 is located. The distance between the lower surface of the inner baffle structure 210 and the center line of the main air inlet 110 gradually decreases from bottom to top. An eccentric smoke collection chamber is formed between the lower surface of the inner baffle structure 210 and the side wall 120 (i.e., the right side wall 120) opposite to the side where the inner baffle structure 210 is located. Both sides of the eccentric smoke collection chamber are formed by inclined plates, which can guide and collect the oil fumes. At the same time, the length of the eccentric smoke collection chamber in the left-right direction is greater than half the length of the smoke hood 100. Even when a single burner is used, it can still provide a large smoke collection area and reduce the escape of oil fumes.

[0038] Of course, in some feasible solutions, the fixed baffle 600 may not be set. When the two inner baffle structures 210 are horizontal, the two inner baffle structures 210 are connected at the middle position of the main air inlet 110.

[0039] The inner baffle structure 210 is closer to the centerline of the main air inlet 110 than the outer baffle structure 220; the outer baffle structure 220 can swing to an open state and a closed state relative to the smoke hood 100; when the outer baffle structure 220 is in the open state, the free end of the outer baffle structure 220 is spaced apart from the smoke hood 100, forming an outer opening between the free end of the outer baffle structure 220 and the smoke hood 100; when the outer baffle structure 220 is in the closed state, the outer baffle structure 220 abuts against the bottom surface of the smoke hood 100 to close the outer opening.

[0040] The outer baffle structure 220 swings relative to the smoke hood 100, thereby opening and closing the outer opening. In this embodiment, the outer baffle structure 220 and the inner baffle structure 210 are controlled independently, meaning their movements complement each other. A second drive mechanism 520 is provided between the smoke hood 100 and the outer baffle structure 220 to drive the outer baffle structure 220 to swing between a closed and an open state relative to the smoke hood 100. The ability to switch between open and closed states for the outer opening further improves the variety of negative pressure distribution. For example, the outer opening on the right side can be closed, allowing more negative pressure to concentrate in the left area.

[0041] Similar to the inner baffle structure 210, the outer baffle structure 220 can also be rotatably connected to the smoke hood 100 via the bracket 530 and the rotating shaft 540, and similarly, the opening and closing states are switched via a motor and connecting rod assembly. In this embodiment, the inner baffle structure 210 and the outer baffle structure 220 in the smoke-blocking assembly are rotatably connected to the same rotating shaft 540. Specifically, taking the smoke-blocking assembly on the left as an example, the left side of the inner baffle structure 210 and the right side of the outer baffle structure 220 are rotatably connected to the smoke hood 100 via the same rotating shaft 540, simplifying the structure and reducing production costs.

[0042] When the outer baffle structure 220 is in the closed state, the upper surface of the outer baffle structure 220 is inclined, and the distance between the upper surface of the outer baffle structure 220 and the center line of the main air inlet 110 gradually increases from bottom to top. The lower surface of the outer baffle structure 220 and the side wall 120 of the smoke collection hood 100 form a closed smoke collection chamber.

[0043] The outer baffle structure 220, which is in the closed state, is inclined and forms an upwardly recessed closed smoke collection chamber with the side wall 120 of the equally inclined smoke collection hood 100. The closed smoke collection chamber has a certain depth and can collect some of the overflowing oil fumes. Under the action of negative pressure, the collected oil fumes can flow along the lower surface of the outer baffle structure 220 to the negative pressure area, thereby preventing the oil fumes from escaping completely.

[0044] Smoke sensors are installed at both the inner and outer openings to detect the smoke concentration at each opening. In this embodiment, four smoke sensors are installed at the two inner openings and the two outer openings, respectively. The opening and closing of the inner and outer openings are adjusted according to the smoke concentration at each location to improve smoke extraction efficiency and reduce smoke escape. The specific control method is described below.

[0045] Example 2 like Figure 2 As shown, the difference from Embodiment 1 is that in this embodiment, the inner baffle structure 210 and the outer baffle structure 220 are an integral structure. That is, under the drive of the first driving mechanism 510, the inner baffle structure 210 and the outer baffle structure 220 can rotate synchronously to realize the switching of the opening and closing states of the outer opening and the inner opening.

[0046] Specifically, the inner baffle structure 210 and the outer baffle structure 220 are set at an angle, and the angle between the two faces facing the stove is greater than 180°, and the cross-section is roughly "V" shaped.

[0047] The rotating shaft 540 can be located at the junction of the inner baffle structure 210 and the outer baffle structure 220. When the inner baffle structure 210 is in the closed state, the outer baffle structure 220 is also in the closed state; when the inner baffle structure 210 is in the open state, the outer baffle structure 220 is also in the open state. That is, when the smoke-blocking assembly rotates, if the opening degree of the inner opening increases, then the opening degree of the outer opening also increases, and vice versa.

[0048] If oil fumes accumulate at the second opening 320 and the third opening 330, the left and right smoke-blocking components can be adjusted respectively. The specific method can also refer to the control method of Embodiment 3.

[0049] Example 3 The present invention provides a range hood control method, which is implemented using a range hood equipped with the smoke collection device of Embodiment 1. The range hood also includes a fan assembly connected to the smoke collection hood.

[0050] The control method includes: Step S1. Adjusting the opening and closing state of the inner baffle structure 210 and the outer baffle according to the usage of the stove burners and the oil fume concentration values ​​detected by each smoke sensor, so as to change the negative pressure at each inner and outer opening, thereby reducing the amount of oil fume escaping and improving the smoke extraction efficiency.

[0051] Specifically, let the outer opening of the smoke-blocking component on the first side be the first opening 310, and the inner opening be the second opening 320; let the inner opening of the smoke-blocking component on the second side be the third opening 330, and the outer opening be the fourth opening 340; the detected oil fume concentration values ​​at the first opening 310, the second opening 320, the third opening 330, and the fourth opening 340 are C1, C2, C3, and C4, respectively; wherein, one of the first side and the second side is the left side, and the other is the right side; two preset values ​​T and R are set, and T is greater than R. In this embodiment, the first side is the left side, and the second side is the right side.

[0052] Step S1 includes: Step S11. When only the first burner on the stove is open and both C1 and C2 are less than the first threshold T, keep the first opening 310 and the fourth opening 340 open, and the second opening 320 and the third opening 330 closed. Figure 3 As shown. At this time, the oil fume concentration is not high, and the oil fume can be absorbed by the outer opening alone. This is the initial state, and the smoke-blocking component is not adjusted.

[0053] Step S12. When only the first burner on the stove is open and at least one of C1 and C2 is greater than the first threshold T, keep the first opening 310 and the third opening 330 open, and the second opening 320 and the fourth opening 340 closed. Figure 4 As shown. At this time, a region with high oil fume concentration appears on the left side. Therefore, the third opening 330 is opened first, and the fourth opening 340 is closed. The outer baffle structure 220 on the left then rotates upward to fit against the smoke collection hood 100, and the inner baffle structure 210 on the right rotates upward to fit against the main air inlet 110. This forms an eccentric smoke-collecting chamber between the first opening 310 and the third opening 330, causing the negative pressure area to concentrate and move to the left, and the main air inlet 110 to shrink to 2 / 3 of its original size. This effectively improves the smoke extraction effect on the left side. In this state, the oil fume concentration at the positions of the first opening 310 and the second opening 320 continues to be monitored.

[0054] The method also includes steps performed after step S12: Step S121. When both C1 and C2 are less than the first threshold T, adjust the opening so that the first opening 310 and the fourth opening 340 are open, and the second opening 320 and the third opening 330 are closed. Figure 5 As shown, the area with higher concentration disappears, returning to the initial position, and the process returns to step S11.

[0055] Step S122. When C1 is less than the first threshold T and C2 is greater than the first threshold T, keep the first opening 310 and the second opening 320 open, and the third opening 330 and the fourth opening 340 closed. Figure 6 As shown, this state indicates that there is still oil fume accumulation at the second opening 320. At this time, the left inner baffle structure 210 rotates upward to fit with the smoke collection hood 100, and the right inner baffle structure 210 rotates downward to fit with the fixed baffle 600. The main air inlet 110 is divided into two parts (the inlet size is 1:2), which respectively suck in the oil fumes from the first opening 310 and the second opening 320.

[0056] Step S123. When C1 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the third opening 330 open, as follows: Figure 7 As shown, the main air inlet 110 is separated by the inner baffle structure 210 on the right side, and the fourth opening 340 is closed, and the main air inlet 110 is reduced to 2 / 3, which can effectively improve the smoke extraction effect on the left side.

[0057] The method further includes steps performed after step S122: Step S1221. When both C1 and C2 are less than the first threshold T, keep the first opening 310 and the second opening 320 open, and the third opening 330 and the fourth opening 340 closed, until both C1 and C2 are less than the second threshold R, then adjust to only open the first opening 310. Figure 8 As shown.

[0058] Step S1222. When C1 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the third opening 330 open, and the fourth opening 340 closed, as follows. Figure 9 As shown, the total air inlet 110 is reduced to 2 / 3, at which point the ratio of the total air inlet 110 is adjusted to 1:1, and the negative pressure of the first opening 310 is equivalent to the negative pressure obtained by the second opening 320 and the third opening 330.

[0059] Step S1223. When C1 is less than the first threshold T and C2 is greater than the first threshold T, it indicates that the range hood's smoke extraction capacity is insufficient to meet the smoke extraction effect requirements, and the fan speed of the range hood is increased to level 400. Subsequently, when both C1 and C2 are less than the second threshold R, the fan speed is reduced back to level 400.

[0060] The method further includes a step performed after step S1223: Step S12231. When C1 and C2 are less than the second threshold R, adjust the fan speed back to the 400 setting, and keep the first opening 310 and the second opening 320 open, and the third opening 330 and the fourth opening 340 closed. Figure 10 As shown, the inner baffle structure 210 on the left divides the main air inlet 110 into two parts with an area ratio of 1:2.

[0061] Step S1 includes: Step S21. When the stove simultaneously turns on both the left and right burners, and the oil fume concentration values ​​of at least three of C1, C2, C3, and C4 are greater than the first threshold T, keep the first opening 310 and the fourth opening 340 open, the second opening 320 and the third opening 330 closed, and increase the fan speed of the range hood to 400. Figure 11 As shown, in areas where the oil concentration is high, the fan speed is increased by 400.

[0062] Step S22. When the stove simultaneously turns on the first burner and the second burner, and the oil fume concentration value of any one of C1, C2, C3, and C4 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 12 As shown.

[0063] Step S23. When the stove simultaneously turns on the first burner and the second burner, and the oil fume concentration values ​​of any two of C1, C2, C3, and C4 are greater than the first threshold T, keep the first opening 310, the third opening 330, and the fourth opening 340 open, and the second opening 320 closed. Figure 13 As shown.

[0064] Step S22 includes the following steps: Step S221. When C1 or C2 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 14 As shown, the ratio of the total air inlet 110 is adjusted to 1:2. Under this state, the smoke extraction effect at the first opening 310 and the second opening 320 is improved.

[0065] Step S2211. If C1 decreases below the first threshold T, and the oil fume concentration at positions C3 and C4 is still less than the first threshold T, no adjustment is made until both are less than the second threshold R, then the system returns to the initial state.

[0066] Step S2212. If C1 decreases below the first threshold T, and the oil fume concentration at position C3 and C4 is greater than the first threshold T, then the inner baffle structure 210 on the left side is attached to the smoke collection hood 100. At this time, the ratio of the total smoke inlet is adjusted to 1:1:1, corresponding to the oil fumes at the first opening 310, the second opening 320 + the third opening 330, and the fourth opening 340, respectively.

[0067] Step S22121. If the oil fume concentration is reduced to below the first threshold T, no adjustment is made. If it is reduced to below the second threshold R, the smoke baffle on the left is restored to its initial state, and the process returns to step S221. If there is a point greater than the first threshold T, the fan airflow is increased by 400. If the oil fume concentration is reduced to below the first threshold T, no adjustment is made. If it is reduced to below the second threshold R, the airflow is reduced, and the process returns to step S22121.

[0068] Step S2213. If C1 is still greater than the first threshold T, increase the fan air volume by 400 and repeat step S221.

[0069] Step S222. When C2 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 15 As shown, the smoking efficiency at the first opening 310 and the fourth opening 340 decreased, and monitoring was repeated.

[0070] Step S222 includes the following steps: Step S2221. When C2 is greater than the first threshold T, keep the first opening 310, the second opening 320, the third opening 330, and the fourth opening 340 open, as follows: Figure 16 As shown, the total air inlet 110 is reduced to 2 / 3, and the negative pressure of the first opening 310 is equivalent to the negative pressure obtained by the second opening 320 and the third opening 330.

[0071] Step S2222. When the oil fume concentration of either C1 or C4 is greater than the first threshold T, keep the first opening 310 and the fourth opening 340 open, and the second opening 320 and the third opening 330 closed, while simultaneously increasing the airflow of the range hood's fan 400. Figure 17 As shown.

[0072] Step S2223. When C1, C2, C3, and C4 are all less than the first threshold T, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 18 As shown, the ratio of the total air inlet 110 is adjusted to 1:2. In this state, the smoke extraction effect at the first opening 310 and the second opening 320 is improved. The first opening 310 and the fourth opening 340 remain open, while the second opening 320 and the third opening 330 remain closed, returning to the initial position, until C1, C2, C3, and C4 are all less than the second threshold R.

[0073] Step S2221 includes the following steps: Step S22211. When C2 is less than the second threshold R, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 19 As shown, the ratio of the total air inlet 110 is adjusted to 1:2. Under this state, the smoke extraction effect at the first opening 310 and the second opening 320 is improved.

[0074] Step S22212. When C2 is greater than the first threshold T, increase the airflow of the fan 400 until C2 is less than the second threshold R, then restore the airflow of the fan 400 and keep the first opening 310, the second opening 320, the third opening 330, and the fourth opening 340 open. Figure 20 As shown.

[0075] Step S23 includes the following steps: Step S231: When both C1 and C2 are greater than the first threshold T, keep the first opening 310, the third opening 330, and the fourth opening 340 open, and the second opening 320 closed. Figure 21 As shown, the smoking effect at the first opening 310 and the third opening 330 is improved.

[0076] Step S232: When both C1 and C4 are greater than the first threshold T, keep the first opening 310, the second opening 320, the third opening 330, and the fourth opening 340 open, as follows: Figure 22 As shown.

[0077] Step S233: When both C1 and C3 are greater than the first threshold T, keep the first opening 310, the third opening 330, and the fourth opening 340 open, and the second opening 320 closed. Figure 23 As shown.

[0078] Step S231 includes the following steps: Step S2311: When C4 is greater than the first threshold T, increase the airflow of the fan 400, and keep the first opening 310 and the fourth opening 340 open, and the second opening 320 and the third opening 330 open, as follows. Figure 24 As shown.

[0079] Step S2312: When either C1 or C2 is greater than the first threshold T, keep the first opening 310, the second opening 320, the third opening 330, and the fourth opening 340 open, as follows: Figure 25 As shown.

[0080] Step S2313: When C1, C2, C3, and C4 are all less than the first threshold T, keep the first opening 310, the third opening 330, and the fourth opening 340 open until C1, C2, C3, and C4 are all less than the second threshold R. Then keep the first opening 310 and the fourth opening 340 open, and close the second opening 320 and the third opening 330. Figure 26 As shown.

[0081] Step S2311 includes the following steps: Step S23111: When both C1 and C2 are less than the first threshold T, keep the first opening 310 and the fourth opening 340 open, and the second opening 320 and the third opening 330 closed, until they drop to the second threshold R, then reduce the airflow of the fan 400. Figure 27 As shown.

[0082] Step S23112: When either C1 or C2 is greater than the first threshold T, keep the first opening 310, the second opening 320, and the fourth opening 340 open, and the third opening 330 closed. Figure 28 As shown.

[0083] Step S23113: When both C1 and C2 are greater than the first threshold T, keep the first opening 310 and the fourth opening 340 open, and the second opening 320 and the third opening 330 closed. Figure 29 As shown.

[0084] 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. A fume collecting device, characterized by, include: A smoke hood (100) is provided with a main air inlet (110) connected to the fan assembly. A smoke-blocking part is connected to the lower part of the smoke collection hood (100); The smoke-blocking part includes two smoke-blocking components arranged to the left and right of the center line of the main air inlet (110); the smoke-blocking components are rotatably connected to the smoke collection hood (100) at the hinge point, and the smoke-blocking part is provided with an outer opening and an inner opening located on the left and right sides of the hinge point respectively. The smoke-blocking components include an inner baffle structure (210) and an outer baffle structure (220) located on the left and right sides of the hinge point respectively. The inner baffle structure (210) can close the inner opening, and the inner baffle structure (210) can close the outer opening. A driving device is provided between the smoke-blocking component and the smoke collection hood (100). The driving device is used to drive the smoke-blocking component to rotate and change the opening degree of the outer opening and the inner opening.

2. The smoke collection device according to claim 1, characterized in that, The inner baffle structure (210) and the outer baffle structure (220) are integrally formed; The inner baffle structure (210) and the outer baffle structure (220) are set at an angle, and the angle between the two faces facing the stove is greater than 180°, so that the opening of the outer opening and the inner opening have the same trend.

3. The smoke collection device according to claim 1, characterized in that, The inner baffle structure (210) and the outer baffle structure (220) are separately provided, and both the inner baffle structure (210) and the outer baffle structure (220) can rotate independently relative to the smoke hood (100); The driving device includes a first driving mechanism (510) connected to the inner baffle structure (210) for driving the inner baffle structure (210) to rotate independently; The driving device includes a second driving mechanism (520) connected to the outer baffle structure (220) for driving the outer baffle structure (220) to rotate independently.

4. The air management device of claim 3, wherein, The inner baffle structure (210) and the outer baffle structure (220) are both rotatably connected to the smoke hood (100) via a rotating shaft; The inner baffle structure (210) and the outer baffle structure (220) are rotatably connected to the same rotating shaft (540); or, the inner baffle structure (210) and the outer baffle structure (220) are rotatably connected to the smoke hood (100) through two rotating shafts (540).

5. The fume extraction device of any one of claims 1-4, wherein, When the inner baffle structure (210) is in the closed state, the inner baffle structure (210) blocks the inner opening; when the inner baffle structure (210) is in the open state, the inner opening is opened, and the inner baffle structure (210) swings into the main air inlet (110) and divides the main air inlet (110) into two air guides, and in the left and right direction, the area of ​​the air guide on the same side as the inner baffle structure (210) is smaller than the area of ​​the air guide on the opposite side of the inner baffle structure (210).

6. The air management device of claim 5, wherein, When the inner baffle structure (210) is in the open state, the lower surface of the inner baffle structure (210) faces the smoke baffle assembly on the opposite side of the side where the inner baffle structure (210) is located, and the distance between the lower surface of the inner baffle structure (210) and the center line of the main air inlet (110) gradually decreases in the direction from bottom to top; along the left and right direction, an eccentric smoke collection cavity is formed between the lower surface of the inner baffle structure (210) and the side wall (120) of the smoke collection hood (100) on the opposite side of the side where the inner baffle structure (210) is located.

7. The smoke collection device according to any one of claims 1-4, characterized in that, The smoke-blocking part also includes a fixed baffle (600), which is connected to the smoke collection hood (100) and is located directly below the main air inlet (110); The gap between the hinge point (540) of the fixed baffle (600) and the inner baffle structure (210) forms the inner opening.

8. The fume hood of any one of claims 1-4, wherein, When the outer baffle structure (220) is in the open state, the free end of the outer baffle structure (220) is spaced apart from the smoke hood (100), and the outer opening is formed between the free end of the outer baffle structure (220) and the smoke hood (100). When the outer baffle structure (220) is in the closed state, the outer baffle structure (220) abuts against the bottom surface of the smoke hood (100) to close the outer opening.

9. The smoke collection device according to claim 1, characterized in that, Smoke sensors are installed at both the inner and outer openings to detect the smoke concentration at each opening. The smoke sensors and the driving device are both connected to the controller of the range hood.

10. A range hood characterized by Includes the smoke collection device according to any one of claims 1-9.

Images