An oil fume treatment device

Abstract

The utility model relates to kitchen appliance technical field especially, relates to an oil fume treatment device. The oil fume treatment device includes casing, fan and gather smoke subassembly, is set up with the air inlet on the casing, and the fan is arranged in the casing and has the air intake, and at least part air inlet and at least part air intake are opposite setting along the front and back direction, and the gather smoke subassembly can open or block the air inlet, and the gather smoke subassembly has the first lowest point, and the air inlet has the second lowest point, and the air intake has the third lowest point, when the gather smoke subassembly is in the state of opening the air inlet, the first lowest point is not higher than at least one of the second lowest point and the third lowest point, guarantees the noise part that overflowed from the air inlet or all has the barrier, thereby reduces the noise of the operation space of user.

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] The main noise from the fume treatment device comes from the high-speed airflow at the air inlet and outlet. The outlet is completely sealed by the check valve and the duct connected to it (not shown in the figure). Since the outlet is usually inside the kitchen cabinet, it is high up and obstructed. Therefore, most of the noise heard by users comes from the air inlet. The sound emitted from the air inlet is transmitted to the user's work space through the air inlet.

[0003] Noise mainly spreads outward from the air inlet of the fan. At least some air inlets are arranged opposite each other in the front-to-back direction. There is a situation where the noise spreading outward from the air inlet propagates outward and escapes outward through the air inlet. The noise overflowing from the air inlet is transmitted towards the user's operating space, resulting in a poor user experience.

[0004] Therefore, there is an urgent need to design a new fume treatment device to solve the serious problem of noise overflowing from the air inlet and being transmitted toward the user's operating space. Utility Model Content

[0005] The purpose of this invention is to provide an oil fume treatment device that reduces the noise emanating from the air inlet and transmitting towards the user's operating space, thereby improving the user experience.

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

[0007] An oil fume treatment device, comprising:

[0008] The casing has an air inlet on it;

[0009] A fan, disposed within the housing and having an air inlet, wherein at least a portion of the air inlet is disposed opposite to at least a portion of the air inlet in a front-rear direction; and

[0010] The smoke collection component can open or block the air inlet. The smoke collection component has a first lowest point, the air inlet has a second lowest point, and the air intake has a third lowest point. When the smoke collection component is in the open state of the air inlet, the first lowest point is not higher than at least one of the second lowest point and the third lowest point.

[0011] As an optional solution, the first projection X1 of the air inlet on the longitudinal section P extending in the left-right direction and the second projection X2 of the air inlet on the longitudinal section P extending in the left-right direction have an overlapping area M, the overlapping area M has a lowest point M1, and the first lowest point is not higher than the lowest point M1 of the overlapping area.

[0012] As an alternative, when the smoke collection assembly is in the open air inlet state, the air inlet is located in front of the air intake, and the third lowest point is higher than the second lowest point.

[0013] As an alternative, the housing includes a flow-guiding flange and a baffle having the air inlet, the flow-guiding flange extending from the air inlet into the interior of the housing.

[0014] As an optional solution, the longitudinal section of the flow-guiding flange is arc-shaped, the flow-guiding flange protrudes towards the air inlet, and the tangent of the free end of the flow-guiding flange is perpendicular to the baffle.

[0015] As an alternative, the cross-section S formed by the oil fume flow channel entering from the air inlet and the plane where the air inlet is located is completely located inside the air inlet or coincides with the air inlet.

[0016] As an optional solution, the fume treatment device further includes a linear drive mechanism, the housing further includes a housing body, the smoke collection component is rotatably connected to the housing body and located above the baffle, the upper end of the baffle is slidably connected to the smoke collection component, the lower end of the smoke collection component is movably 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 collection component.

[0017] As an optional solution, the fume treatment device further includes a noise reduction structure, which is disposed inside the fume collection assembly and / or inside the housing; and / or

[0018] When the smoke collection component is in the state of opening the air inlet, the first dimension L of the first lowest point in the vertical direction from the ground is greater than or equal to 1.5m.

[0019] As an alternative, the housing has a first longitudinal central section extending in the front-rear direction, the fan also has an air outlet, and the air inlet has a second longitudinal central section extending in the front-rear direction. From the first longitudinal central section to the second longitudinal central section, the second longitudinal central section and at least part of the air outlet are located on both sides of the first longitudinal central section.

[0020] As an optional solution, the fume treatment device further includes a rectifier, which is disposed between the air inlet and the ventilation port and has multiple through holes. Taking 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; and / or

[0021] Using 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 called 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 .

[0022] The beneficial effects of this utility model are:

[0023] The oil fume treatment device provided by this utility model includes a housing, a fan, and a smoke collection component. The housing has an air inlet, the fan is installed inside the housing and has an air inlet, at least some of the air inlets are arranged opposite each other in the front-back direction, the smoke collection component can open or block the air inlet, the smoke collection component has a first lowest point, the air inlet has a second lowest point, and the air inlet has a third lowest point. When the smoke collection component is in the state of opening the air inlet, the first lowest point is not higher than at least one of the second lowest point and the third lowest point, ensuring that the noise overflowing from the air inlet is partially or completely blocked, reducing the noise overflowing from the air inlet from being transmitted towards the user's operating space, thereby reducing the noise in the user's operating space. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an existing fume treatment device;

[0025] Figure 2 This is a schematic diagram of the structure of the fume treatment device provided in this embodiment of the utility model;

[0026] Figure 3 This is a cross-sectional view of the fume treatment device provided in this embodiment of the utility model;

[0027] 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;

[0028] Figure 5 This is a schematic diagram of the structure of the first type of rectifier provided in this embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the fan and the second type of rectifier provided in this embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the first type of baffle provided in this embodiment of the utility model;

[0031] 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;

[0032] Figure 9 This is a schematic diagram of the external structure of the fume treatment device provided in this embodiment of the utility model;

[0033] 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;

[0034] Figure 11 This is a schematic diagram of the structure of a portion of the oil fume treatment device provided in the embodiments of this utility model;

[0035] Figure 12 This is a structural schematic diagram of the guide and connector provided in an embodiment of the present utility model;

[0036] Figure 13 This is a partial structural schematic diagram of the fume treatment device provided in an embodiment of the present utility model;

[0037] Figure 14 This is a schematic diagram of the structure of a portion of the oil fume treatment device provided in the embodiments of this utility model;

[0038] Figure 15 This is a first cross-sectional view of an oil fume treatment device provided in an embodiment of this utility model;

[0039] Figure 16 This is a cross-sectional view of another oil fume treatment device provided in this embodiment of the utility model;

[0040] Figure 17 This is a second sectional view of an oil fume treatment device provided in an embodiment of the present invention;

[0041] Figure 18 This is a schematic diagram of the structure of the fume treatment device provided in this embodiment of the utility model and the user;

[0042] Figure 19 This is a schematic diagram of the structure of the first projection and the second projection provided in an embodiment of the present utility model.

[0043] In the picture:

[0044] 100. Fume treatment device; 200. Fume duct; 300. Floor; 400. Cabinet; 500. User;

[0045] 10. Shell; 11. Baffle; 111. Air inlet; 1111. First main air inlet; 1112. Connecting section; 1113. Second main air inlet; 1114. Second lowest point; 112. Baffle body; 113. First side plate; 12. Drainage flange; 13. Shell body; 14. First longitudinal center section; 15. Mixing chamber;

[0046] 20. Fan; 21. Volute; 211. Inlet; 2111. Third lowest point; 212. Outlet; 22. Impeller; 221. Second longitudinal center section;

[0047] 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;

[0048] 40. Covering components;

[0049] 50. Main unit case;

[0050] 60. Check valve;

[0051] 70. Oil fume testing agencies;

[0052] 80. Drive assembly; 81. Rotary drive mechanism; 811. Output shaft; 82. Gear; 83. Connector; 831. Rack section; 84. Guide member; 841. Guide hole;

[0053] 90. Smoke collection assembly; 91. Smoke collection plate; 911. First lowest point; 92. Second side plate; 93. Flip plate. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] 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.

[0059] like Figure 1 As 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.

[0060] like Figure 1As 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.

[0061] like Figure 1 As shown, the fume treatment device 100 also includes a main unit box 50, which is covered by the check valve 60 to ensure the overall aesthetics of the fume treatment device 100.

[0062] In an alternative embodiment, such as Figure 3 As shown, the fume treatment device 100 also includes a fume collection component 90, which can open or block the air inlet 111. When the fume collection component 90 opens the air inlet 111, it can effectively collect the fumes, thereby achieving a better fume extraction effect for the fume treatment device 100.

[0063] The main noise of the fume treatment device 100 is the sound of high-speed airflow at the air inlet 211 and the air outlet 212. The air outlet 212 is completely sealed by the check valve 60 and the air duct connected to the check valve 60 (not shown in the figure). The air outlet 212 is generally located inside the kitchen cabinet, which is high and obstructed. Therefore, most of the noise heard by the user 500 comes from the air inlet 211. The sound emitted from the air inlet 211 is transmitted to the operating space where the user 500 is located through the air inlet 111.

[0064] like Figure 15 As shown, the noise mainly propagates outward from the air inlet 211 of the fan 20. (See [reference]) Figure 15 As indicated by the arrows, at least a portion of the air inlet 111 and at least a portion of the air inlet 211 are arranged opposite each other in the front-to-back direction. There is a situation where the air inlet 211 emits noise outward and propagates outward and escapes outward through the air inlet 111. The noise overflowing from the air inlet 111 is transmitted towards the user's operating space, resulting in a poor user experience.

[0065] To address the aforementioned problems, in an optional embodiment, such as Figure 15 As shown, the smoke collection assembly 90 has a first lowest point 911, the air inlet 111 has a second lowest point 1114, and the air inlet 211 has a third lowest point 2111. When the smoke collection assembly 90 is in the state of opening the air inlet 111, the first lowest point 911 is not higher than at least one of the second lowest point 1114 and the third lowest point 2111, ensuring that the noise overflowing from the air inlet 111 is partially or completely blocked, thereby reducing the noise in the operating space where the user 500 is located.

[0066] For ease of explanation, such as Figure 15 As shown, the third lowest point 2111 is higher than the second lowest point 1114. The third lowest point 2111 is located between the second lowest point 1114 and the upper end of the air inlet 111 in the vertical direction, and the distance between the third lowest point 2111 and the upper end of the air inlet 111 in the vertical direction is m. Linear noise overflowing from the air inlet 211 will propagate outwards from back to front through the space between the third lowest point 2111 and the upper end of the air inlet 111. By setting the first lowest point 911 to be no higher than the third lowest point 2111, it can be ensured that the linear noise overflowing from the air inlet 211 is blocked, thereby reducing the noise in the user 500's operating space. For example, as... Figure 15 As shown, the first lowest point 911 is located below the third lowest point 2111, and the distance between the first lowest point 911 and the third lowest point 2111 is t, which can effectively prevent the linear noise overflowing from the air inlet 211 from being transmitted toward the operating space where the user 500 is located.

[0067] Of course, in other alternative embodiments, the first lowest point 911 and the third lowest point 2111 can be set to the same height, which can also better prevent the straight noise overflowing from the air inlet 211 from being transmitted toward the operating space where the user 500 is located.

[0068] Of course, in other alternative embodiments, the third lowest point 2111 is higher than the second lowest point 1114, wherein the first lowest point 911 is not higher than the second lowest point 1114. That is, the first lowest point 911 can be set lower, thereby enabling the noise diffused from the air inlet 111, including noise that overflows in a straight line from the air inlet 211, as well as noise that travels in a straight line from the air inlet 111 and not overflowing from the air inlet 211.

[0069] In other alternative embodiments, the second lowest point 1114 may be higher than the third lowest point 2111, or the second lowest point 1114 may be equal to the third lowest point 2111. By limiting the structure as described above, the same effect as described above can be achieved.

[0070] like Figure 15 As shown, the noise mainly propagates outward from the air inlet 211 of the fan 20. The energy is greatest during straight-line propagation. (See [reference needed]). Figure 15 As shown by the arrow, at least part of the air inlet 111 and at least part of the air inlet 211 are arranged opposite each other in the front-to-back direction, and there is a situation where noise emitted from the air inlet 211 propagates in a straight line and escapes outward through the air inlet 111.

[0071] To address the aforementioned problems, in an optional embodiment, such as Figure 19As shown, the first projection X1 of the air inlet 111 on the longitudinal section P extending in the left and right direction and the second projection X2 of the air inlet 211 on the longitudinal section P extending in the left and right direction have an overlapping area M. The overlapping area M has a lowest point M1. The first lowest point 911 is not higher than the lowest point M1 of the overlapping area, which can ensure that the linear noise overflowing from the air inlet 211 is blocked, thereby reducing the noise in the operating space where the user 500 is located.

[0072] It should be noted that when the smoke collection assembly 90 is in the open air inlet 111 state, the air inlet 111 is located in front of the air inlet 211, and the third lowest point 2111 is higher than the second lowest point 1114. By setting the third lowest point 2111 to be higher than the second lowest point 1114, the air inlet 211 can effectively guide the oil fumes entering from the air inlet 111 upwards, thus ensuring that the oil fume treatment device 100 has a good absorption effect on the oil fumes.

[0073] For ease of explanation, such as Figure 16 As shown, the third lowest point 2111 is located below the second lowest point 1114 in the vertical direction. The linear noise overflowing from the air inlet 211 will be transmitted outward from the air inlet 111. By setting the second lowest point 1114 to be no higher than the third lowest point 2111, it can be ensured that the linear noise overflowing from the air inlet 211 is blocked, thereby reducing the noise in the operating space where the user 500 is located.

[0074] In an alternative embodiment, such as Figure 15 As shown, the housing 10 includes a flow-guiding flange 12 and a baffle 11 with an air inlet 111. The flow-guiding flange 12 extends from the air inlet 111 into the interior of the housing 10. The flow-guiding flange 12 can better introduce the oil fumes outside the housing 10 into the air inlet 111, thereby improving the oil fume extraction effect of the oil fume treatment device 100.

[0075] In an alternative embodiment, such as Figure 15 As shown, the longitudinal section of the air-guiding flange 12 is arc-shaped. The air-guiding flange 12 protrudes towards the air inlet 111. The tangent of the free end of the air-guiding flange 12 is perpendicular to the baffle 11. A straight line is the best path for airflow to enter. By setting the tangent of the free end of the air-guiding flange 12 to be perpendicular to the baffle 11, the air-guiding flange 12 can allow the airflow to enter the interior of the housing 10 along the arc-shaped tangent. This allows most of the airflow to reach the fan 20 directly from the air inlet 111 in a straight line without obstruction, reducing obstruction and disturbance during the airflow process, reducing the amount of sound emitted by the sound source, and thus reducing the noise when the range hood is intake.

[0076] In an alternative embodiment, such as Figure 17As shown, the cross-section S formed by the oil fume flow channel 200 formed by the oil fume entering from the air inlet 111 on the plane of the air inlet 211 is completely located inside the air inlet 211 or coincides with the air inlet 211. This ensures that the oil fume entering from the air inlet 111 can completely enter the air inlet 211, avoids the noise generated by the oil fume entering from the air inlet 111 colliding with the outside of the fan 20, improves the absorption efficiency of the fan 20 for oil fumes, improves the oil fume extraction effect of the oil fume treatment device 100, and ensures a better oil fume extraction effect of the oil fume treatment device 100.

[0077] In an optional embodiment, the fume treatment device 100 further includes a noise reduction structure (not shown in the figure). The noise reduction structure can be disposed inside the smoke collection assembly 90. The noise reduction structure can further absorb the noise overflowing from the air inlet 211, thereby further improving the noise reduction effect of the fume treatment device 100. For example, the noise reduction structure can be at least one of a perforated plate, a noise reduction cotton layer, etc. All structures capable of achieving noise absorption or active noise reduction are within the protection scope of this optional embodiment.

[0078] In an optional embodiment, the noise reduction structure can also be disposed on the inner side of the housing 10. The noise reduction structure disposed at this location can further absorb the noise overflowing from the air inlet 211, thereby further improving the noise reduction effect of the fume treatment device 100.

[0079] like Figure 18 As shown, the main unit 50 is installed in the cabinet 400. Since the sound waves overflowing from the air inlet 111 do not propagate in a completely straight line, the sound waves spread outward in a fan shape after being transmitted a second time from the air inlet 111. The propagation path of the sound waves is as follows: Figure 18 The arrows and dots shown indicate that, in an optional embodiment, when the smoke collection assembly 90 is in the open air inlet 111 state, the first lowest point 911 and the first dimension L in the vertical direction of the ground 300 are greater than or equal to 1.5m. Through the design of this structure and size, the smoke collection assembly 90 can isolate most of the noise below the ears of the general user 500, thereby further reducing the noise received by the user 500 and achieving a better noise reduction effect.

[0080] 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.

[0081] like Figure 1As 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 limitations of the overall installation of the fume treatment device 100.

[0082] To solve the aforementioned problems, such as Figure 2 As shown, by adjusting the position of the fan 20 within the housing 10, the second longitudinal central section 221 and at least part of the air outlet 212 are positioned on either side of the first longitudinal central section 14 in the left-right direction. 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 too large to center it, ensuring reasonable installation of the fume treatment device 100 within a limited space and reducing the installation difficulty.

[0083] 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.

[0084] Although some existing fume treatment devices 100 also include a baffle plate that blocks the air inlet 111, and the air intake on the left and right sides of the air inlet 111 can be made uniform by adjusting the position of the baffle plate at the air inlet 111, the setting of the baffle plate will affect the air intake volume of the air inlet 111, resulting in the fume treatment device 100 failing to achieve a good absorption effect on the fume.

[0085] To solve the above problems, such as Figures 11-14 As shown, the fume treatment device 100 also includes a fume detection mechanism 70 and a shielding component 40. The fume detection mechanism 70 is used to acquire fume distribution information. The shielding component 40 is disposed at the air inlet 211 and spaced apart from the air inlet 111. The position of the shielding component 40 in the horizontal direction is adjustable to adjust the distribution of the gas entering from the air inlet 111 in the horizontal direction, so that the left and right air intakes of the air inlet 111 are the same, ensuring that the fume extraction effect on the left and right sides of the air inlet 111 is consistent, and achieving a better fume extraction effect for the left and right stoves produced by the fume treatment device 100.

[0086] Specifically, such as Figures 11-14 As shown, when the fume distribution information obtained by the fume detection mechanism 70 indicates that the air intake volume on the left side of the air inlet 111 is large and the air intake volume on the right side of the air inlet 111 is small, the shielding member 40 is moved to the left, thereby reducing the air intake volume on the left side of the air inlet 111 and increasing the air intake volume on the right side of the air inlet 111, thus achieving the effect of equal air intake volume on both sides of the air inlet 111. Conversely, if the air intake volume on the right side of the air inlet 111 is large and the air intake volume on the left side of the air inlet 111 is small, the shielding member 40 is moved to the right, thereby reducing the air intake volume on the right side of the air inlet 111 and increasing the air intake volume on the left side of the air inlet 111, thus achieving the effect of equal air intake volume on both sides of the air inlet 111.

[0087] Furthermore, in this embodiment of the present disclosure, the shielding member 40 is disposed at the air inlet 211 and spaced apart from the air inlet 111. The shielding member 40 will not affect the air intake volume of the air inlet 111 like existing shields, thus ensuring that the fume treatment device 100 can have a better absorption effect on the fume.

[0088] In summary, the fume treatment device 100 of this embodiment can achieve both good absorption of fumes and uniform air intake from the left and right sides of the air inlet 111.

[0089] In an alternative embodiment, such as Figures 11-13 As shown, the fume treatment device 100 also includes a drive assembly 80, which is disposed inside the housing 10. The drive assembly 80 can drive the shielding member 40 to move in the horizontal direction, thereby realizing convenient adjustment of the position of the shielding member 40 in the left and right directions. In addition, the fact that the drive assembly 80 is disposed inside the housing 10 can maintain the overall aesthetics of the fume treatment device 100.

[0090] In an alternative embodiment, such as Figures 11-13 As shown, the drive assembly 80 includes a rotary drive mechanism 81, a gear 82, and a connecting member 83. The rotary drive mechanism 81 is located inside the housing 10 and includes an output shaft 811 extending in the front-rear direction. The gear 82 is sleeved on the outer periphery of the output shaft 811. The connecting member 83 is fixedly connected to the blocking member 40 and includes a rack portion 831 extending in the horizontal direction. The rack portion 831 meshes with the gear 82. When the output shaft 811 rotates, it drives the gear 82 to rotate in the front-rear direction. The rotation of the gear 82 drives the rack portion 831 and the connecting member 83 to move in the left-right direction, thereby enabling the blocking member 40 to move in the left-right direction and adjust its position. Furthermore, the engagement of the rack portion 831 and the gear 82 has advantages such as high rigidity, high load-bearing capacity, high precision, accurate positioning, and high transmission efficiency.

[0091] In other alternative embodiments, the drive component 80 may also be a linear motor, a linear cylinder, a lead screw nut guide rail assembly, or other components capable of outputting motion in the left-right direction. All drive components 80 capable of outputting linear motion in the left-right direction are within the protection scope of this application.

[0092] In an alternative embodiment, such as Figure 11 and Figure 12 As shown, the drive assembly 80 also includes a guide member 84, which is disposed inside the housing 10 and has a guide hole 841 extending in the horizontal direction. The connector 83 is inserted into the guide hole 841 and can slide along the guide hole 841. Through the cooperation between the connector 83 and the guide hole 841, the connector 83 can move better in the left and right direction, thereby further realizing that the blocking member 40 moves better in the left and right direction.

[0093] In an alternative embodiment, such as Figure 11 As shown, the upper and lower ends of the blocking member 40 are provided with connecting members 83, which enables the blocking member 40 to move well in the left and right directions and prevents the blocking member 40 from flipping or tilting forward or backward.

[0094] In an alternative embodiment, such as Figure 14As shown, the air inlet 111 comprises a first end and a second end arranged at intervals in the left-right direction, and one-to-one corresponding lampblack detection mechanisms 70 are respectively provided on the first end and the second end. Through the one-to-one corresponding lampblack detection mechanisms 70 respectively arranged on the first end and the second end, it can be compared whether the air intake volume on the left side of the air inlet 111 is larger than that on the right side of the air inlet 111, thereby realizing accurate adjustment of the position of the shielding member 40. Illustratively, the lampblack detection mechanism 70 may be a wind speed sensor, a lampblack concentration sensor, a flow sensor, etc. All detection mechanisms capable of reflecting physical property information of lampblack at the air inlet 111 fall within the protection scope of this alternative embodiment.

[0095] In an alternative embodiment, the housing 10 has a first longitudinal central section 14 extending in the front-rear direction, the air inlet 111 extends in the horizontal direction and is symmetrically arranged with the first longitudinal central section 14 as a symmetry plane, and the two lampblack detection mechanisms 70 are symmetrically arranged on both sides of the first longitudinal central section 14, which enables more accurate comparison of whether the air intake volume on the left side of the air inlet 111 is larger than that on the right side of the air inlet 111, thereby further realizing accurate adjustment of the position of the shielding member 40.

[0096] For convenience of description, a first wind speed sensor is provided at the first end (left side) of the air inlet 111, a second wind speed sensor is provided at the second end (right side) of the air inlet 111, the reading of the first wind speed sensor is M1, the reading of the second wind speed sensor is M2, and an allowable wind speed deviation is M3.

[0097] When │M1-M2│≥M3, the shielding member 40 is ready to be activated to move in the left-right direction, so as to adjust the horizontal distribution of gas entering from the air inlet 111.

[0098] Further judgment:

[0099] When M1-M2 is a positive number, it indicates that the air intake volume on the left side is larger, and the shielding member 40 is controlled to move leftwards;

[0100] When M1-M2 is a negative number, it indicates that the air intake volume on the right side is larger, and the shielding member 40 is controlled to move rightwards.

[0101] Illustratively, if M1=5; M2=4; M3=0.5; M1-M2=1, since 1>0.5 and M1-M2 is a positive number, the shielding member 40 is controlled to move leftwards. Thereafter, the first wind speed sensor and the second wind speed sensor transmit data in real time. When │M1-M2│<M3, the shielding member 40 is controlled to stop moving, and meanwhile, the first wind speed sensor and the second wind speed sensor continue to read and compare data in real time.

[0102] 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, in an optional embodiment, such as Figures 3-6 As shown, to further 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 intake of the air inlet 111.

[0103] In summary, by adjusting the position of the fan 20 within the housing 10 so that the second longitudinal central section 221 and at least part of the air outlet 212 are located on both sides of the first longitudinal central section 14 in the left-right direction, 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 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 box 50 with the uniform air intake on the left and right sides of the air inlet 111.

[0104] 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.

[0105] In an alternative embodiment, such as Figure 4 and Figure 5As 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.

[0106] 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.

[0107] 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.

[0108] 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 effect on the left and right sides of the air inlet 111, and improve the uniformity of the air intake on the left and right sides of the air inlet 111.

[0109] In an alternative embodiment, such as Figure 6As 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.

[0110] 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 handle more oil fumes, thereby increasing the air 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 of the air inlet 111 and improving the uniformity of the left and right air intake of the air inlet 111.

[0111] 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2 This 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.

[0112] In an alternative embodiment, such as Figure 7As shown, the connecting segment 1112 extends from right to left, and the width of the connecting segment 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 achieve a better redistribution of the left and right air intake effect of the air inlet 111 and improve the uniformity of the left and right air intake of the air inlet 111.

[0113] 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.

[0114] 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 and a baffle 11 with an air inlet 111. The smoke collection assembly 90 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 collection assembly 90, and the lower end of the smoke collection assembly 90 is movably 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 collection assembly 90. When the linear drive mechanism is in the unfolded state, the smoke collection assembly 90 flips forward and drives the baffle 11 to flip forward. The fan 20, the smoke collection assembly 90, 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 of the air inlet 211 tend to be the same.

[0115] In an alternative embodiment, such as Figure 3 and Figure 9 As shown, the smoke collection assembly 90 includes a smoke collection plate 91 and a second side plate 92. The smoke collection plate 91 is provided with a second side plate 92 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 a first side plate 113 on both the left and right sides. The air inlet 111 is provided on the baffle body 112. When the smoke collection assembly 90 and the baffle 11 are both in the forward-flipped state, the smoke collection plate 91, the second side plate 92, 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 of the air inlet 211 tend to be the same.

[0116] In an alternative embodiment, such as Figure 9 As shown, a flip-up flap 93 is rotatably mounted at the lower end of the smoke-collecting plate 91. By adjusting the flip angle of the flap 93, a consistently good smoke-collecting 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 93 relative to the smoke-collecting plate 91. For example, the drive device can be a linear motor, with one end of the linear motor rotatably connected to the smoke-collecting plate 91 and the other end of the linear motor rotatably connected to the flap 93. 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 93.

[0117] In an alternative embodiment, such as Figure 3 As shown, when the smoke collection assembly 90 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-hole 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.

[0118] 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.

[0119] 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 fume collection assembly 90 is in the open state, the elastic element resets, ensuring that the distance g between the rectifier 30 and the air inlet 211 is greater than or equal to 10 mm, and the rectifier 30 can uniformly distribute the left and right airflow velocity at the air inlet 111. When the fume collection assembly 90 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 fume collection assembly 90. The thickness of this space can be less than 10 mm, thereby enabling a thinner and lighter design for the fume treatment device 100.

[0120] 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 in that, include: The housing (10) has an air inlet (111) on it. A fan (20) is disposed inside the housing (10) and has an air inlet (211), at least a portion of the air inlet (111) and at least a portion of the air inlet (211) are disposed opposite each other in the front-rear direction; as well as The smoke collection assembly (90) can open or block the air inlet (111). The smoke collection assembly (90) has a first lowest point (911), the air inlet (111) has a second lowest point (1114), and the air inlet (211) has a third lowest point (2111). When the smoke collection assembly (90) is in the state of opening the air inlet (111), the first lowest point (911) is not higher than at least one of the second lowest point (1114) and the third lowest point (2111).

2. The fume treatment device according to claim 1, characterized in that, The first projection X1 of the air inlet (111) on the longitudinal section P extending in the left and right direction has an overlapping area M with the second projection X2 of the air inlet (211) on the longitudinal section P extending in the left and right direction. The overlapping area M has a lowest point M1, and the first lowest point (911) is not higher than the lowest point M1 of the overlapping area.

3. The fume treatment device according to claim 1, characterized in that, When the smoke collection assembly (90) is in the state of opening the air inlet (111), the air inlet (111) is located in front of the air inlet (211), and the third lowest point (2111) is higher than the second lowest point (1114).

4. The oil fume treatment device according to any one of claims 1 to 3, characterized in that, The housing (10) includes a flow-guiding flange (12) and a baffle (11) having the air inlet (111), the flow-guiding flange (12) extending from the air inlet (111) into the interior of the housing (10).

5. The fume treatment device according to claim 4, characterized in that, The longitudinal section of the flow-guiding flange (12) is arc-shaped. The flow-guiding flange (12) protrudes towards the air inlet (111). The tangent of the free end of the flow-guiding flange (12) is perpendicular to the baffle (11).

6. The fume treatment device according to claim 5, characterized in that, The oil fume flow channel (200) formed by the oil fumes entering from the air inlet (111) has a cross section S formed on the plane where the air inlet (211) is located, which is completely inside the air inlet (211) or coincides with the air inlet (211).

7. The fume treatment device according to claim 4, characterized in that, The fume treatment device further includes a linear drive mechanism. The housing (10) also includes a housing body (13). The smoke collection component (90) 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 collection component (90). The lower end of the smoke collection component (90) is movably 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 collection component (90).

8. The fume treatment device according to any one of claims 1 to 3, characterized in that, The fume treatment device further includes a noise reduction structure, which is disposed on the inner side of the fume collection assembly (90) and / or the inner side of the housing (10); and / or When the smoke collection assembly (90) is in the state of opening the air inlet (111), the first dimension L of the first lowest point (911) and the ground (300) in the vertical direction is greater than or equal to 1.5m.

9. The oil fume treatment device according to any one of claims 1 to 3, characterized in that, The housing (10) has a first longitudinal central section (14) extending in the front-rear direction, the fan (20) also has an air outlet (212), and 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) and at least part of the air outlet (212) are located on both sides of the first longitudinal central section (14).

10. The fume treatment device according to claim 9, characterized in that, The fume treatment device further includes a rectifier (30), which is disposed between the air inlet (111) and the air intake (211) and has multiple 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; and / or 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 .

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