An oil fume treatment device

Abstract

This utility model relates to the field of kitchen appliance technology, and in particular to an oil fume treatment device. The oil fume treatment device includes a housing, a fan, and a rectifier. The housing has an air inlet and a first longitudinal central section extending in the front-to-back direction. The air inlet has a second longitudinal central section extending in the front-to-back direction. The second longitudinal central section is located on one side of the first longitudinal central section, and at least some of the air outlets are located on the other side of the first longitudinal central section. The rectifier has multiple through holes. Taking the first longitudinal central section as the interface, the total area of ​​the through holes on the same side as the second longitudinal central section is the first total ventilation area S1, and the total area of ​​the through holes on the opposite side of the second longitudinal central section is the second total ventilation area S2. The first total ventilation area S1 is smaller than the second total ventilation area S2, achieving a balance between the relatively centrally located main unit and the uniform air intake from both sides of the air inlet.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an oil fume treatment device. Background Technology

[0002] like Figure 1 As shown, since the current fume treatment device 100 uses a spiral duct 21 for its volute housing, the second longitudinal center section 221 of the air inlet 211 and the longitudinal center section of the air outlet 212 are spaced apart in the left-right direction. The conventional approach is to make the first longitudinal center section 14 and the second longitudinal center section 221 of the housing 10 coplanar; that is, to align the second longitudinal center section 221 of the air inlet 211 with the first longitudinal center section 14 of the entire housing 10, so that the fume treatment device 100 achieves similar fume extraction effects on both sides.

[0003] However, this would cause the longitudinal center section of the air outlet 212 to be too far off-center from one side of the first longitudinal center section 14, resulting in the main unit 50, which serves a decorative purpose, also being off-center. This would degrade the overall quality of the fume treatment device 100, making its appearance unsightly and unacceptable to users. Alternatively, the dimensions of the main unit 50 could be increased in the left-right direction to achieve a centered position. However, this would result in an overly large main unit 50, making installation of the fume treatment device 100 difficult within a limited space and increasing the overall limitations of its installation.

[0004] Therefore, there is an urgent need to design a new fume treatment device to solve the problem of not being able to simultaneously achieve a relatively centrally located main unit and uniform air intake on both sides of the air inlet. Utility Model Content

[0005] The purpose of this utility model is to provide an oil fume treatment device that achieves the effect of centrally positioning the main unit and uniform air intake from the left and right sides of the air inlet.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An oil fume treatment device, comprising:

[0008] The housing has an air inlet and a first longitudinal central section extending in the front-to-back direction;

[0009] A fan, disposed within the housing and having an air inlet and an air outlet, the air inlet having a second longitudinal central section extending in a front-rear direction, the second longitudinal central section being located on one side of the first longitudinal central section, and at least a portion of the air outlet being located on the other side of the first longitudinal central section; and

[0010] A rectifier is disposed between the air inlet and the air intake and has multiple through holes. With the first longitudinal center section as the interface, the total area of ​​the through holes disposed on the same side as the second longitudinal center section is the first total ventilation area S1, and the total area of ​​the through holes disposed on the opposite side of the second longitudinal center section is the second total ventilation area S2. The first total ventilation area S1 is smaller than the second total ventilation area S2.

[0011] As an optional solution, at least two arrayed through-hole groups are formed on the rectifier. The at least two arrayed through-hole groups are arranged sequentially from the first longitudinal center section to the second longitudinal center section. All the through holes in each arrayed through-hole group have the same diameter, and the diameter of the through holes in the at least two arrayed through-hole groups gradually decreases from the first longitudinal center section to the second longitudinal center section.

[0012] As an alternative, the plurality of through holes are arranged in an array, and the diameter of the through holes gradually decreases from the first longitudinal center section to the second longitudinal center section.

[0013] As an optional solution, from the first longitudinal center section to the second longitudinal center section, the rectifier includes a first opening area, a blocking area and a second opening area connected in sequence. A first through-hole group is formed on the first opening area, and a second through-hole group is formed on the second opening area. The first total ventilation area S1 of the second through-hole group is smaller than the second total ventilation area S2 of the first through-hole group.

[0014] As an optional solution, taking the first longitudinal center section as the interface, the area of ​​the portion of the air inlet located on the same side as the second longitudinal center section is defined as the first air inlet area S. 进风1 The area of ​​the portion of the air inlet located on the opposite side of the second longitudinal central section is the second air inlet area S. 进风2 The second air intake area S 进风2 Greater than the first air inlet area S 进风1 .

[0015] As an optional solution, from the first longitudinal center section to the second longitudinal center section, the air inlet includes a first main air inlet, a connecting section, and a second main air inlet connected in sequence, wherein the first main air inlet has a first main air inlet area S. 主进风1 The second main air inlet area S is greater than the second main air inlet. 主进风2 .

[0016] As an optional embodiment, the connecting segment extends from the first longitudinal center section to the second longitudinal center section, wherein:

[0017] The width of the connecting segment gradually decreases; or

[0018] The width of the connecting segment first decreases and then increases.

[0019] As an optional solution, the fume treatment device further includes a linear drive mechanism. The housing includes a housing body, a smoke baffle, and a baffle with the air inlet. The smoke baffle is rotatably connected to the housing body and located above the baffle. The upper end of the baffle is slidably connected to the smoke baffle, and the lower end of the smoke baffle is rotatably connected to the housing body. One end of the linear drive mechanism is rotatably connected to the housing body, and the other end of the linear drive mechanism is rotatably connected to the smoke baffle.

[0020] As an optional solution, when the smoke baffle is in the open state, the rectifier and the air inlet are spaced apart, and the distance g between the rectifier and the air inlet is greater than or equal to 10mm.

[0021] As an alternative, the rectifier is directly connected to the housing; or

[0022] The fume treatment device also includes an elastic element, which is connected to the rectifier and the housing respectively.

[0023] The beneficial effects of this utility model are:

[0024] The oil fume treatment device provided by this utility model includes a housing, a fan, and a rectifier. The housing has an air inlet and a first longitudinal central section extending in the front-back direction. The fan is disposed inside the housing and has an air inlet and an air outlet. The air inlet has a second longitudinal central section extending in the front-back direction. The second longitudinal central section is located on one side of the first longitudinal central section, and at least part of the air outlet is located on the other side of the first longitudinal central section. The rectifier is disposed between the air inlet and the air outlet and has multiple through holes. Taking the first longitudinal central section as the interface, the total area of ​​the through holes disposed on the same side as the second longitudinal central section is the first total ventilation area S1, and the total area of ​​the through holes disposed on the opposite side of the second longitudinal central section is the second total ventilation area S2. The first total ventilation area S1 is smaller than the second total ventilation area S2.

[0025] By adjusting the position of the fan within the casing, the second longitudinal center section is positioned to one side of the first longitudinal center section, and at least part of the air outlet is located to the other side of the first longitudinal center section. This ensures that the longitudinal center section of the air outlet is not too far off-center from the first longitudinal center section, and that the longitudinal center plane of the decorative main unit is not significantly offset relative to the first longitudinal center section. In some cases, the longitudinal center plane of the main unit and the first longitudinal center section can even be coplanar, thereby improving the overall quality and aesthetics of the fume treatment device and ensuring a better user experience. Furthermore, because the longitudinal center plane of the main unit is relatively close to the first longitudinal center section, there is no need to make the main unit excessively large to achieve a centered position, ensuring reasonable installation within a limited space and reducing the difficulty of installation.

[0026] The air inlet area corresponding to the second total ventilation area S2 has relatively low air inlet resistance, while the air inlet area corresponding to the first total ventilation area S1 has relatively high air inlet resistance. This can improve the air volume and smoke extraction effect of the air inlet area on the opposite side of the second longitudinal center section, thereby achieving the effect of redistributing the left and right air volume of the air inlet.

[0027] In summary, by adjusting the position of the fan within the casing so that the second longitudinal center section is located on one side of the first longitudinal center section, and at least part of the air outlet is located on the other side of the first longitudinal center section, and by setting the first total ventilation area S1 to be smaller than the second total ventilation area S2, it is possible to achieve a relatively small and centrally located main unit box for the fume treatment device, while also ensuring uniform air intake on both sides of the air inlet and the fume extraction effect. This achieves the effect of balancing the relatively centrally located main unit box with uniform air intake on both sides of the air inlet. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an existing fume treatment device;

[0029] Figure 2 This is a schematic diagram of the structure of the fume treatment device provided in this embodiment of the utility model;

[0030] Figure 3 This is a cross-sectional view of the fume treatment device provided in this embodiment of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the fan and the first rectifier provided in this embodiment of the utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the first type of rectifier provided in this embodiment of the utility model;

[0033] Figure 6This is a schematic diagram of the structure of the fan and the second type of rectifier provided in this embodiment of the utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the first type of baffle provided in this embodiment of the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the second type of baffle provided in this embodiment of the present utility model;

[0036] Figure 9 This is a schematic diagram of the external structure of the fume treatment device provided in this embodiment of the utility model;

[0037] Figure 10 This is a cross-sectional view of the fume treatment device provided in this embodiment of the present invention when it is in the off state.

[0038] In the picture:

[0039] 100. Fume treatment device;

[0040] 10. Shell; 11. Baffle; 111. Air inlet; 1111. First main air inlet; 1112. Connecting section; 1113. Second main air inlet; 112. Baffle body; 113. First side plate; 12. Smoke baffle; 121. Smoke baffle body; 122. Second side plate; 123. Flip plate; 13. Shell body; 14. First longitudinal center section; 15. Mixing chamber;

[0041] 20. Fan; 21. Volute; 211. Inlet; 212. Outlet; 22. Impeller; 221. Second longitudinal center section;

[0042] 30. Rectifier; 31. First opening area; 311. First through-hole group; 32. Blocking area; 33. Second opening area; 331. Second through-hole group; 34. Through hole;

[0043] 50. Main unit case;

[0044] 60. Check valve. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between 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.

[0047] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] like Figure 1 As shown, this embodiment of the utility model provides an oil fume treatment device 100, which includes a housing 10 and a fan 20. The housing 10 has an air inlet 111, and the fan 20 is disposed inside the housing 10 and has an air inlet 211 and an air outlet 212. The air inlet 111, air inlet 211, and air outlet 212 are arranged along the gas flow direction. When the fan 20 operates, it generates a negative pressure inside the housing 10, allowing oil fumes from outside the device to enter the fan 20 through the air inlet 111 and air inlet 211 for filtration. The filtered gas is then discharged from the air outlet 212 to an outdoor duct (not shown in the figure). Figure 1 As shown, the fume treatment device 100 also includes a check valve 60, which is connected to the air outlet 212 and also to the outdoor duct. The check valve 60 prevents backflow of fumes, ensuring a better kitchen environment and reducing the odor of fumes in the kitchen. It should be noted that the fume treatment device 100 in this embodiment can be a side-draft range hood, a top-mounted range hood, a European-style range hood, an integrated stove, etc. All devices capable of treating fumes are within the protection scope of this optional embodiment.

[0050] like Figure 1As shown, the air inlet 211 can be an elongated opening extending in the left-right direction, thereby ensuring a large negative pressure at the air inlet 211, allowing external fumes to enter the housing 10. It should be noted that the left-right direction in this embodiment is defined with reference to the fume treatment device 100 itself.

[0051] like Figure 1 As shown, the fan 20 in this embodiment can be a centrifugal fan. The fan 20 includes a volute 21 and an impeller 22 rotatably disposed inside it. The volute 21 has an air inlet 211 and an air outlet 212. When the impeller 22 rotates, a vacuum is formed inside the volute 21, so that the oil fumes enter from the air inlet 211. The oil fumes achieve gas-liquid separation inside the volute 21 due to centrifugal action, thereby realizing the filtering function of the fan 20 for the oil fumes.

[0052] like Figure 1 As shown, the fume treatment device 100 also includes a main unit box 50, which is covered outside the check valve 60 to ensure the overall aesthetics of the fume treatment device 100.

[0053] like Figure 1 As shown, the following definitions apply: the housing 10 has a first longitudinal central section 14 extending in the front-rear direction, the air inlet 211 has a second longitudinal central section 221 extending in the front-rear direction, the air outlet 212 has an air outlet longitudinal central section, and the main unit 50 has a longitudinal central surface.

[0054] like Figure 1 As shown, because the current fume treatment device 100 uses a spiral duct 21 for its casing, the second longitudinal center section 221 of the air inlet 211 and the longitudinal center section of the air outlet 212 are spaced apart in the left-right direction. The conventional approach is to make the first longitudinal center section 14 and the second longitudinal center section 221 coplanar, that is, to align the second longitudinal center section 221 of the air inlet 211 with the first longitudinal center section 14 of the entire casing 10 to ensure that the fume treatment device 100 has the same smoke extraction effect on both sides. However, this results in the air outlet 212's longitudinal center section being too far off-center from the first longitudinal center section 14, causing the decorative main unit 50 to also be off-center, resulting in a poor overall quality of the fume treatment device 100 and an unsightly appearance that is unacceptable to users. Alternatively, the dimensions of the main unit 50 could be increased in the left and right directions to achieve a centered position. However, this would result in the main unit 50 being too large overall, making it difficult to install the fume treatment device 100 in a limited space and increasing the overall limitations of the installation of the fume treatment device 100.

[0055] To solve the aforementioned problems, such as Figure 2As shown, by adjusting the position of the fan 20 within the housing 10, the second longitudinal central section 221 is positioned on one side of the first longitudinal central section 14, and at least part of the air outlet 212 is positioned on the other side of the first longitudinal central section 14. This ensures that the longitudinal central section of the air outlet 212 is not too far off-center from one side of the first longitudinal central section 14, and that the longitudinal central plane of the decorative main unit 50 is not too far offset from the first longitudinal central section 14. In fact, the longitudinal central plane of the main unit 50 and the first longitudinal central section 14 can even be coplanar, thereby improving the overall quality of the fume treatment device 100 and making its appearance more aesthetically pleasing, thus ensuring a better user experience. Simultaneously, since the longitudinal central plane of the main unit 50 is relatively close to the first longitudinal central section 14, there is no need to make the main unit 50 excessively large to center it, ensuring reasonable installation of the fume treatment device 100 within a limited space and reducing the installation difficulty.

[0056] Currently, most stoves used in my country are of the dual-burner type, requiring the flat air inlet 111 to have as equal air intake on both sides as possible to ensure consistent smoke extraction. However, the aforementioned structure results in the air inlet 211 being eccentrically positioned relative to the first longitudinal center section 14, leading to different air intake volumes on the left and right sides of the air inlet 111. Consequently, the smoke extraction effect on the left and right sides of the air inlet 111 is inconsistent, and the smoke treatment device 100 cannot achieve a good smoke extraction effect on the smoke generated by the left and right burners.

[0057] Since, with the first longitudinal central section 14 as the interface, the fume extraction effect of the air inlet 111 area on the opposite side of the second longitudinal central section 221 is worse than that of the air inlet 111 area on the same side of the second longitudinal central section 221, therefore, Figures 3-7 As shown, to solve the above problems, the fume treatment device 100 of this embodiment further includes a rectifier 30. The rectifier 30 is disposed between the air inlet 111 and the air inlet 211 and has a plurality of through holes 34. Taking the first longitudinal central section 14 as the interface, the total area of ​​the through holes 34 disposed on the same side as the second longitudinal central section 221 is the first total ventilation area S1, and the total area of ​​the through holes 34 disposed on the opposite side of the second longitudinal central section 221 is the second total ventilation area S2. The first total ventilation area S1 is smaller than the second total ventilation area S2. The air inlet resistance of the air inlet 111 area corresponding to the second total ventilation area S2 is relatively small, and the air inlet resistance of the air inlet 111 area corresponding to the first total ventilation area S1 is relatively large. This can improve the air volume and fume extraction effect of the air inlet 111 area on the opposite side of the second longitudinal central section 221, thereby achieving the effect of redistributing the left and right air volume of the air inlet 111.

[0058] In summary, by adjusting the position of the fan 20 within the housing 10 so that the second longitudinal central section 221 is located on one side of the first longitudinal central section 14, and at least part of the air outlet 212 is located on the other side of the first longitudinal central section 14, and by setting the first total ventilation area S1 to be smaller than the second total ventilation area S2, it is possible to achieve a relatively small and centrally located main unit housing 50 of the fume treatment device 100, while also ensuring uniform air intake on the left and right sides of the air inlet 111 of the fume treatment device 100 and uniform fume extraction effect. This achieves the effect of balancing the relatively centrally located main unit housing 50 with the uniform air intake on the left and right sides of the air inlet 111.

[0059] For example, the through hole 34 can be circular, elliptical, polygonal, oval, irregular, etc. All types of through holes 34 are within the protection scope of the embodiments of this disclosure, and will not be described in detail in the embodiments of this disclosure.

[0060] In an alternative embodiment, such as Figure 4 and Figure 5 As shown, the rectifier 30 has at least two arrayed through-hole groups, which are arranged sequentially from right to left (from the first longitudinal center section 14 to the second longitudinal center section 221). All through-holes 34 within each arrayed through-hole group have the same diameter, and the diameter of the through-holes 34 in the at least two arrayed through-hole groups gradually decreases from right to left. This structure allows the total area of ​​each of the at least two arrayed through-hole groups to gradually decrease from right to left, thereby achieving the effect that the second total ventilation area S2 is greater than the first total ventilation area S1. Furthermore, since the through-holes 34 within each arrayed through-hole group are of the same size, only molds of the same size are needed to process the through-holes 34 within each arrayed through-hole group. The entire rectifier 30 requires only a few molds of different sizes for processing, reducing the cost of processing molds and lowering the processing difficulty of the rectifier 30.

[0061] For example, such as Figure 4 and Figure 5 As shown, the rectifier 30 has an array of through holes A, B, and C arranged from right to left. The diameter of the through hole 34 in array through hole A is larger than that in array through hole B, and the diameter of the through hole 34 in array through hole B is larger than that in array through hole C. By setting the aforementioned structure, the effect of the second total ventilation area S2 being larger than the first total ventilation area S1 can be achieved.

[0062] Of course, in other alternative embodiments, the number of array via groups can be two, four, five, six or more, and this disclosure will not provide examples of each.

[0063] In an optional embodiment, the multiple through holes 34 are arranged in an array, and the diameter of the through holes 34 gradually decreases from right to left. This can also achieve the effect that the second total ventilation area S2 is greater than the first total ventilation area S1, so that the transition from the second total ventilation area S2 to the first total ventilation area S1 is a uniform and gradual transition. This can achieve a better redistribution of the air intake volume around the air inlet 111 and improve the uniformity of the air intake volume around the air inlet 111.

[0064] In an alternative embodiment, such as Figure 6 As shown, the rectifier 30 includes a first opening area 31, a blocking area 32, and a second opening area 33 connected sequentially from right to left. A first through-hole group 311 is provided on the first opening area 31, and a second through-hole group 331 is provided on the second opening area 33. The first total ventilation area S1 of the second through-hole group 331 is smaller than the second total ventilation area S2 of the first through-hole group 311. By setting the blocking area 32, more oil fumes can be evenly introduced from the left and right sides of the air inlet 111, improving the air intake force, air volume, and oil fume extraction effect on the left and right sides of the air inlet 111, thereby achieving a better oil fume extraction effect for the left and right stoves produced by the air inlet 111.

[0065] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, with the first longitudinal central section 14 as the interface, the area of ​​the portion of the air inlet 111 arranged on the same side as the second longitudinal central section 221 is the first air inlet area S. 进风1 The area of ​​the portion of the air inlet 111 located on the opposite side of the second longitudinal central section 221 is the second air inlet area S. 进风2 Second air intake area S 进风2 Greater than the first air intake area S 进风1 The portion of the air inlet 111 located on the opposite side of the second longitudinal central section 221 is larger than the portion of the air inlet 111 located on the same side of the second longitudinal central section 221. The portion of the air inlet 111 located on the opposite side of the second longitudinal central section 221 can pass through more oil fumes, thereby improving the air intake volume and oil fume extraction effect of the portion of the air inlet 111 located on the opposite side of the second longitudinal central section 221. This achieves the effect of redistributing the left and right air intake volume of the air inlet 111 and improving the uniformity of the left and right air intake volume of the air inlet 111.

[0066] In an alternative embodiment, such as Figure 7 and Figure 8 As shown, the air inlet 111 includes a first main air inlet 1111, a connecting section 1112, and a second main air inlet 1113 connected sequentially from right to left. The first main air inlet 1111 has a first main air inlet area S. 主进风1 The second main air inlet area S is greater than the second main air inlet 1113. 主进风2This allows the fumes to enter primarily from the first main air inlet 1111 and the second main air inlet 1113, enabling the fumes to enter more evenly from both sides of the air inlet 111. This improves the suction power, air volume, and fume extraction effect of the air inlet 111 on both sides, thus achieving a better fume extraction effect for the two stoves on the left and right sides.

[0067] In an alternative embodiment, such as Figure 7 As shown, the connecting section 1112 extends from right to left, and the width of the connecting section 1112 gradually decreases, so that the transition from the first main air inlet 1111 to the second main air inlet 1113 is uniform and gradual, which can better redistribute the air volume on the left and right sides of the air inlet 111 and improve the uniformity of the air volume on the left and right sides of the air inlet 111.

[0068] In an alternative embodiment, such as Figure 8 As shown, the width of the connecting section 1112 first decreases and then increases, effectively reducing the area of ​​the connecting section 1112. This allows the fumes to mainly enter from the first main air inlet 1111 and the second main air inlet 1113, enabling the fumes to enter more evenly from the left and right sides of the air inlet 111. This improves the air intake force, air volume, and fume extraction effect on the left and right sides of the air inlet 111, thereby achieving a better fume extraction effect for the two stoves on the left and right sides of the air inlet 111.

[0069] In an alternative embodiment, such as Figure 3 and Figure 9 As shown, the fume treatment device 100 also includes a linear drive mechanism (not shown in the figure). The housing 10 includes a housing body 13, a smoke baffle 12, and a baffle 11 with an air inlet 111. The smoke baffle 12 is rotatably connected to the housing body 13 and is located above the baffle 11. The upper end of the baffle 11 is slidably connected to the smoke baffle 12, and the lower end of the smoke baffle 12 is rotatably connected to the housing body 13. One end of the linear drive mechanism is rotatably connected to the housing body 13, and the other end of the linear drive mechanism is rotatably connected to the smoke baffle 12. When the linear drive mechanism is in the unfolded state, the smoke baffle 12 flips forward and drives the baffle 11 to flip forward. The fan 20, the smoke baffle 12, and the baffle 11 together form a mixing cavity 15, which increases the distance between the air inlet 111 and the air inlet 211, allowing the fumes to redistribute their kinetic energy through viscous shearing action, eliminating airflow disturbance at the air inlet 211, and making the left and right air intake speeds at the air inlet 211 tend to be the same.

[0070] In an alternative embodiment, such as Figure 3 and Figure 9As shown, the smoke baffle 12 includes a smoke baffle body 121 and a second side plate 122. The smoke baffle body 121 is provided with second side plates 122 on both the left and right sides. The baffle 11 includes a baffle body 112 and a first side plate 113. The baffle body 112 is provided with first side plates 113 on both the left and right sides. The air inlet 111 is provided on the baffle body 112. When both the smoke baffle 12 and the baffle 11 are in the forward-flipped state, the smoke baffle body 121, the second side plate 122, the baffle body 112 and the first side plate 113 together form a relatively sealed mixing cavity 15, which allows the oil fumes to better redistribute kinetic energy through viscous shearing action, better eliminates airflow disturbance at the air inlet 211, and better makes the left and right air intake speeds at the air inlet 211 tend to be the same.

[0071] In an alternative embodiment, such as Figure 9 As shown, a flip-up flap 123 is rotatably mounted on the lower end of the smoke baffle body 121. By adjusting the flip angle of the flap 123, a consistently good smoke collection effect can be achieved for oil fumes in different states. Specifically, a drive device can also be provided to realize the rotation of the flap 123 relative to the smoke baffle body 121. For example, the drive device can be a linear motor, with one end of the linear motor rotatably connected to the smoke baffle body 121 and the other end of the linear motor rotatably connected to the flap 123. Of course, the drive device can also be a rotary motor, with the rotating shaft of the rotary motor fixedly connected to the rotating shaft of the flap 123.

[0072] In an alternative embodiment, such as Figure 3 As shown, when the smoke baffle 12 is in the open state, the rectifier 30 and the air inlet 211 are spaced apart, and the distance g between the rectifier 30 and the air inlet 211 is greater than or equal to 10mm. The fumes pass through the through holes 34 on the rectifier 30, and the air inlet 211 becomes a velocity concentration zone. The rectifier 30 is located on the front side of the air inlet 211, which can uniformize the airflow at the front end of the air inlet 211 and make the left and right airflow velocities of the air inlet 111 uniform. The distance g can be 10mm, 15mm, 20mm, 25mm, 30mm, etc. The larger the distance g, the better the effect of the rectifier 30 on uniformizing the airflow at the front end of the air inlet 211. However, considering the limitations of the internal space of the housing 10, the distance g can preferably be 20mm.

[0073] In an alternative embodiment, such as Figure 3 and Figure 10 As shown, the rectifier 30 is directly connected to the housing 10, making the installation of the rectifier 30 simple. For example, the rectifier 30 and the housing 10 can be snap-fitted, welded, magnetically connected, etc. All structures that enable the rectifier 30 and the housing 10 to be detachably or fixedly connected are within the protection scope of this optional embodiment.

[0074] In an optional embodiment, the fume treatment device 100 further includes an elastic element (not shown in the figure), which is connected to the rectifier 30 and the housing 10 respectively. When the baffle 12 is in the open state, the elastic element returns to its original position, ensuring that the distance g between the rectifier 30 and the air inlet 211 is greater than or equal to 10 mm. The rectifier 30 can uniformly distribute the airflow velocity from left to right at the air inlet 111. When the baffle 12 is in the closed state, the elastic element is compressed, and the rectifier 30 can be housed in the limited narrow space between the fan 20 and the baffle 12. The thickness of this space can be less than 10 mm, thereby enabling a thinner and lighter design for the fume treatment device 100.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oil fume treatment device, characterized by, include: The housing (10) has an air inlet (111) and a first longitudinal central section (14) extending in the front-rear direction. A fan (20), disposed within the housing (10), has an air inlet (211) and an air outlet (212). The air inlet (211) has a second longitudinal central section (221) extending in the front-rear direction from the first longitudinal central section (14) to the second longitudinal central section (221). The second longitudinal central section (221) is located on one side of the first longitudinal central section (14), and at least a portion of the air outlet (212) is located on the other side of the first longitudinal central section (14). A rectifier (30) is disposed between the air inlet (111) and the air inlet (211) and has multiple through holes (34). With the first longitudinal center section (14) as the interface, the total area of ​​the through holes (34) disposed on the same side as the second longitudinal center section (221) is the first total ventilation area S1, and the total area of ​​the through holes (34) disposed on the opposite side of the second longitudinal center section (221) is the second total ventilation area S2. The first total ventilation area S1 is smaller than the second total ventilation area S2.

2. The oil fume treatment device according to claim 1, characterized in that, At least two array of through holes are formed on the rectifier (30). The at least two array of through holes are arranged sequentially from the first longitudinal center section (14) to the second longitudinal center section (221). All the through holes (34) in each array of through holes have the same diameter. The diameter of the through holes (34) in the at least two array of through holes gradually decreases from the first longitudinal center section (14) to the second longitudinal center section (221).

3. The oil fume treatment device according to claim 1, characterized in that, The multiple through holes (34) are arranged in an array, and the diameter of the through holes (34) gradually decreases from the first longitudinal center section (14) to the second longitudinal center section (221).

4. The oil fume treatment device according to claim 1, characterized in that, From the first longitudinal center section (14) to the second longitudinal center section (221), the rectifier (30) includes a first opening area (31), a blocking area (32) and a second opening area (33) connected in sequence. A first through hole group (311) is provided on the first opening area (31), and a second through hole group (331) is provided on the second opening area (33). The first total ventilation area S1 of the second through hole group (331) is smaller than the second total ventilation area S2 of the first through hole group (311).

5. The oil fume treatment device according to any one of claims 1 to 4, characterized in that, With the first longitudinal center section (14) as the interface, the area of ​​the portion of the air inlet (111) arranged on the same side as the second longitudinal center section (221) is the first air inlet area S. 进风1 The area of ​​the portion of the air inlet (111) disposed on the opposite side of the second longitudinal central section (221) is the second air inlet area S. 进风2 The second air intake area S 进风2 Greater than the first air inlet area S 进风1 .

6. The cooking fume treatment device according to claim 5, characterized in that, From the first longitudinal center section (14) to the second longitudinal center section (221), the air inlet (111) includes a first main air inlet (1111), a connecting section (1112), and a second main air inlet (1113) connected in sequence, wherein the first main air inlet (1111) has a first main air inlet area S 主进风1 The second main air inlet area S is greater than that of the second main air inlet (1113). 主进风2 .

7. The fume treatment device according to claim 6, characterized in that, The connecting segment (1112) extends from the first longitudinal center section (14) to the second longitudinal center section (221), wherein: The width of the connecting segment (1112) gradually decreases; or The width of the connecting segment (1112) first decreases and then increases.

8. The oil fume treatment device according to any one of claims 1 to 4, characterized in that, The fume treatment device further includes a linear drive mechanism. The housing (10) includes a housing body (13), a smoke baffle (12), and a baffle (11) with the air inlet (111). The smoke baffle (12) is rotatably connected to the housing body (13) and located above the baffle (11). The upper end of the baffle (11) is slidably connected to the smoke baffle (12), and the lower end of the smoke baffle (12) is rotatably connected to the housing body (13). One end of the linear drive mechanism is rotatably connected to the housing body (13), and the other end of the linear drive mechanism is rotatably connected to the smoke baffle (12).

9. The fume treatment device according to claim 8, characterized in that, When the smoke baffle (12) is in the open state, the rectifier (30) and the air inlet (211) are spaced apart, and the distance g between the rectifier (30) and the air inlet (211) is greater than or equal to 10 mm.

10. The fume treatment device according to claim 9, characterized in that, The rectifier (30) is directly connected to the housing (10); or The fume treatment device also includes an elastic element, which is connected to the rectifier (30) and the housing (10) respectively.

Images