Air curtain structure of range hood and range hood

Abstract

The utility model discloses a kind of wind curtain structure and extractor hood of extractor hood, wind curtain structure includes: fan;Multiple air ducts, the air duct respectively extends towards different direction;Control component, the control component is connected between the fan and multiple air ducts, to selectively open and close at least one in multiple air ducts. Thus, by setting the wind curtain structure, it can be under the premise that it can air supply to the different area of extractor hood, also can be uniformly air supplied to multiple air ducts by single fan, to reduce the arrangement quantity of fan, shorten air duct arrangement path, reduce occupied space, and also can improve the air supply synchronism of multiple air ducts.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to an air curtain structure and a range hood. Background Technology

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. Installed above the stove, it quickly removes waste from combustion and harmful fumes produced during cooking, expelling them outdoors. It also condenses and collects these fumes, reducing pollution, purifying the air, and providing safety features such as protection against toxic substances and explosions.

[0003] In related technologies, some range hoods are equipped with air curtain structures. However, there are usually multiple air curtain structures, which are arranged in different areas of the range hood and operate independently. This increases the difficulty of installation and layout, and the cost is relatively high. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to propose an air curtain structure for a range hood that can deliver air to different areas of the range hood while also delivering air to multiple duct components through a single fan. This reduces the number of fans required, shortens the duct layout path, reduces space occupation, and improves the synchronization of air delivery to multiple duct components.

[0005] This utility model further proposes a range hood.

[0006] According to the first aspect of the present invention, the air curtain structure of the range hood includes: a fan; a plurality of air duct components extending in different directions; and a control component connected between the fan and the plurality of air duct components to selectively open or close at least one of the air duct components.

[0007] Therefore, by setting up this air curtain structure, it is possible to deliver air to different areas of the range hood, and also to deliver air to multiple air duct components through a single fan. This reduces the number of fans, shortens the air duct layout path, reduces the space occupied, and also improves the synchronization of air delivery to multiple air duct components.

[0008] In some examples of this utility model, the duct component includes a front duct that guides airflow to the front of the range hood and a side duct that guides airflow to one side of the range hood in a left-right direction; wherein, the control component selectively opens or closes at least one of the front duct and the side duct among a plurality of the duct components.

[0009] In some examples of this utility model, the control component includes: a valve housing, one end of which is connected to the fan and the other end of which is connected to the inlet of a plurality of the air duct components, and a valve cavity is formed inside the valve housing; a first control component, which is disposed in the valve housing and selectively opens and closes the inlet of at least one of the plurality of the air duct components; and a second control component, which is disposed in the valve housing and spaced apart from the first control component, and selectively opens and closes the front air duct and the side air duct of the plurality of the air duct components.

[0010] In some examples of this utility model, the first control component includes: a first drive member disposed in the valve housing; a first valve core movably disposed in the valve cavity and connected to the first drive member, the first valve core selectively opening and closing at least one of the inlets of the plurality of air duct components under the action of the first drive member; and / or the second control component includes: a second drive member disposed in the valve housing; a second valve core movably disposed in the valve cavity and connected to the second drive member, the second valve core selectively opening and closing at least one of the front air duct and the side air duct of the plurality of air duct components under the action of the second drive member.

[0011] In some examples of this utility model, a partition plate is provided inside the valve housing to divide the valve cavity into a front valve cavity and a side valve cavity. The front valve cavity is disposed opposite to the inlet of a plurality of front air ducts, and the side valve cavity is disposed opposite to the inlet of a plurality of side air ducts. A clearance notch is provided in the middle of the first valve core, and the partition plate passes through the clearance notch.

[0012] In some examples of this utility model, the first valve core is provided with a rotating shaft and is rotatably disposed on the valve housing via the rotating shaft. The first control component further includes: a first transmission mechanism, the first transmission mechanism including a first gear and a second gear, the first gear being disposed on the first driving member, the second gear being located outside the valve housing and disposed on the rotating shaft of the first valve core, and the first gear meshing with the second gear.

[0013] In some examples of this utility model, one end of the first valve core is rotatably disposed on the valve housing, and the first control component further includes: a second transmission mechanism, the second transmission mechanism including a lead screw, a translation block and a connecting rod, the lead screw being connected to the first driving member, the translation block being slidably disposed in the valve cavity and rotatably connected to the first valve core, the translation block being threadedly engaged with the lead screw, and one end of the connecting rod being rotatably connected to the other end of the first valve core; wherein, the translation block is provided with a through hole, the connecting rod being slidably disposed through the through hole, and the axial direction of the connecting rod being perpendicular to the axial direction of the lead screw.

[0014] In some examples of this utility model, each of the air duct components includes: an air duct body; a partition extending within the air duct body and dividing the internal space of the air duct body into the front air duct and the side air duct, the end of the partition away from the control component being connected to the air duct body, and the end of the partition near the control component separating the inlet of the front air duct and the inlet of the side air duct within the air duct body.

[0015] In some embodiments of this utility model, the main body of the air duct includes a front air duct section and a side air duct section. The front air duct section extends in a left-right direction, and the side air duct section extends in a front-back direction with its front end connected to the front air duct section. The partition extends at least within the front air duct section. The front air duct is located below the partition within the front air duct section, and a portion of the side air duct is located above the partition within the front air duct section, while another portion is located within the side air duct section. The front air duct is formed with multiple intervals along the air supply direction. The front air vent extends at least partially in the left-right direction, and the side air duct forms a plurality of spaced side air vents along the air supply direction. The side air vents extend in the front-back direction. The front air vent and the side air vents are used to direct airflow out of the casing of the range hood. A first diverter plate is provided between two adjacent front air vents in the front air duct to divert the airflow in the front air duct, and a second diverter plate is provided between two adjacent side air vents in the side air duct to divert the airflow in the side air duct.

[0016] According to a second aspect of the present invention, a range hood includes: a housing, the housing having a top plate, the top plate having a plurality of air curtain outlets; and an air curtain structure of the range hood, the air curtain structure being disposed within the housing, each of the air duct components corresponding to at least one of the air curtain outlets.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of a range hood according to an embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram of a range hood according to an embodiment of the present utility model from another angle; Figure 3 yes Figure 2 Enlarged view of region A in the middle; Figure 4 yes Figure 2 Enlarged view of region B in the middle; Figure 5 This is a partial structural schematic diagram of a range hood according to an embodiment of the present utility model; Figure 6 yes Figure 5 Enlarged view of region C in the middle; Figure 7 This is a partial structural cross-sectional view of a range hood according to an embodiment of the present utility model; Figure 8 This is a partial structural schematic diagram of a range hood according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of another part of the structure of the range hood according to an embodiment of the present utility model; Figure 10 This is a partial structural diagram of a range hood according to another embodiment of the present invention from another angle; Figure 11 yes Figure 10 Enlarged view of region D in the middle; Figure 12 yes Figure 11 Enlarged view of region E in the middle; Figure 13 yes Figure 10 A magnified view of region F in the middle.

[0019] Figure label: 100. Air curtain structure; 200. Range hood; 201. Housing; 202. Top plate; 203. Air curtain outlet; 204. Front air curtain outlet; 205. Side air curtain outlet; 10. Fan; 20. Air duct components; 21. Front air duct; 211. Front air outlet; 212. First diverter plate; 22. Side air duct; 221. Side air outlet; 23. Main body of air duct; 231. Front air duct section; 232. Side air duct section; 24. Partition plate; 30. Control component; 31. Valve housing; 311. Valve chamber; 3111. Front valve chamber; 3112. Side valve chamber; 312. Partition plate; 32. First control component; 321. First drive element; 322. First valve core; 3221. Clearance notch; 3222. Rotating shaft; 323. First transmission mechanism; 3231. First gear; 3232. Second gear; 324. Second transmission mechanism; 3241. Lead screw; 3251. Translation block; 3252. Through hole; 3261. Connecting rod; 33. Second control component; 331. Second drive element; 332. Second valve core. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figures 1-13 The air curtain structure 100 of the range hood 200 according to the present utility model embodiment can deliver air to different areas of the range hood 200, and can also deliver air to multiple air duct components 20 through a single fan 10, thereby reducing the number of fans 10, shortening the air duct layout path, reducing the space occupied, and improving the air delivery synchronization of multiple air duct components 20.

[0022] Combination Figures 1-13 As shown, the air curtain structure 100 of the range hood 200 according to the first aspect embodiment of the present invention includes a fan 10, a plurality of air duct components 20, and a control component 30. The fan 10 generates directional airflow by pushing the surrounding gas; the air duct components 20 provide a flow path for the air, meaning the airflow can follow a designated path along the air duct components 20; the control component 30 can open or close the airflow passage between the fan 10 and the air duct components 20 as needed.

[0023] Specifically, the air duct components 20 extend in different directions, and the control component 30 is connected between the fan 10 and the multiple air duct components 20 to selectively open or close at least one of the multiple air duct components 20.

[0024] Specifically, multiple air duct components 20 extend in different directions, which can guide the airflow to more different positions on the range hood 200. This makes it easier for the air curtain structure 100 to form air supply ducts to different positions on the range hood 200, thereby helping to form airflow barriers in different areas of the range hood 200 and improving the oil fume blocking effect.

[0025] Furthermore, the control component 30 is directly connected to the output end of the fan 10. This allows the control component 30 to complete the airflow distribution and on / off control before the air generated by the fan 10 enters the duct component 20, avoiding air pressure loss and ineffective flow caused by the air entering the duct first and then being regulated. For example, when the corresponding area of ​​the left duct component 20 does not require air supply, the control component 30 can directly cut off the air source, without allowing the air to circulate within the left duct component 20 before closing the outlet, thereby effectively reducing airflow waste and the additional load on the fan 10.

[0026] In addition, the multiple air duct components 20 are set independently to avoid mutual interference and crossflow of airflow within the multiple air duct components 20, thereby ensuring the independence of the airflow within each air duct component 20 during the flow process; it can also improve the accuracy of airflow direction, that is, ensure that the airflow can flow along a preset path (such as the left air duct component 20 or the right air duct component 20) to the designated area of ​​the range hood 200 (such as the left or right side of the range hood 200).

[0027] Optionally, the multiple air duct components 20 include a left air duct component 20 and a right air duct component 20. The control component 30 can open only the left air duct component 20, in which case the air generated by the fan 10 can only flow along the left air duct component 20 to the left side of the range hood 200; the control component 30 can also open only the right air duct component 20, in which case the air generated by the fan 10 can only flow along the right air duct component 20 to the right side of the range hood 200; the control component 30 can also open both the left and right air duct components 20 at the same time, in which case the air generated by the fan 10 can flow along the left and right air duct components 20 to the left and right sides of the range hood 200.

[0028] In particular, multiple air duct components 20 share the same fan 10. Compared with the traditional air curtain structure (where a single air duct component corresponds to a single drive component), the embodiment in this case can reduce the number of fans 10, reduce manufacturing costs and layout difficulty, and reduce space occupation, thereby improving economy and space utilization. At the same time, the unified control logic of a single fan 10 can improve the synchronization and coordination of multiple air duct components 20 in the air supply process.

[0029] Therefore, by setting up the air curtain structure 100, it can deliver air to different areas of the range hood 200, and also deliver air to multiple air duct components 20 through a single fan 10, thereby reducing the number of fans 10, shortening the air duct layout path, reducing the space occupied, and improving the air delivery synchronization of multiple air duct components 20.

[0030] According to some optional embodiments of the present invention, combined with Figure 5 and Figure 6As shown, the duct component 20 includes a front duct 21 that guides airflow to the front of the range hood 200 and a side duct 22 that guides airflow to one side of the range hood 200 in a left-right direction; wherein, the control component 30 selectively opens or closes at least one of the front duct 21 and the side duct 22 in the duct component 20.

[0031] The front duct 21 on the duct component 20 can guide the air generated by the fan 10 to the front of the range hood 200, while the side duct 22 on the duct component 20 can guide the air generated by the fan 10 to the side of the range hood 200. This makes it easy for the air curtain structure 100 to form air supply ducts in the front and left and right sides of the range hood 200, thereby helping to form an airflow barrier in the front and left and right sides of the range hood 200 and improving the oil fume blocking effect.

[0032] In addition, the front air duct 21 and the side air duct 22 are set independently to avoid mutual interference and crossflow of airflow within the front air duct 21 and the side air duct 22, thereby ensuring the independence of the airflow in each duct during the flow process; it can also improve the accuracy of airflow direction, that is, ensure that the airflow can flow along the preset path (such as the front air duct 21 or the side air duct 22) to the designated area of ​​the range hood 200 (such as the front or side of the range hood).

[0033] For example, when the control component 30 opens the front air duct 21, the air generated by the fan 10 can flow along the front air duct 21 to the front of the range hood 200; when the control component 30 opens the side air duct 22, the air generated by the fan 10 can flow along the side air duct 22 to the side of the range hood 200; when the control component 30 opens both the front air duct 21 and the side air duct 22 at the same time, the air generated by the fan 10 can flow along both the front air duct 21 and the side air duct 22 to the front and side of the range hood 200, which means that the air curtain structure 100 can selectively deliver air to the front air duct 21 and the side air duct 22, thereby improving the air delivery flexibility and adaptability of the air curtain structure 100.

[0034] Specifically, in combination Figures 5-7 As shown, the control component 30 includes a valve housing 31, a first control component 32, and a second control component 33. One end of the valve housing 31 is connected to the fan 10, and the other end is connected to the inlet of a plurality of air duct components 20. A valve cavity 311 is formed inside the valve housing 31. The first control component 32 is disposed in the valve housing 31 and selectively opens and closes the inlet of at least one of the plurality of air duct components 20. The second control component 33 is disposed in the valve housing 31 and is spaced apart from the first control component 32. The second control component 33 selectively opens and closes the front air duct 21 and the side air duct 22 of the plurality of air duct components 20.

[0035] Understandably, the valve housing 31 is directly connected between the fan 10 and multiple air duct components 20, thus constructing a complete and sealed air path transition channel. This avoids air leakage and loss during the transmission of air source from the fan 10 to the air duct component 20, ensuring that the air energy output by the fan 10 is concentrated into the valve chamber 311, thereby improving the air output efficiency. At the same time, the fixed structure of the valve housing 31 also makes the installation of the first control component 32 and the second control component 33 more stable, reducing the risk of displacement caused by airflow impact.

[0036] The first control component 32 can selectively open and close the inlet of at least one of the multiple air duct components 20. This allows for the complete independent cutoff of multiple air sources (e.g., maintenance of one air duct component 20 does not affect the operation of another air duct component 20) and the simultaneous opening of multiple air sources, effectively improving the stability and scene adaptability of the multiple air duct components 20 during air supply. Similarly, the second control component 33 can selectively open and close the inlet of the front air duct 21 and the inlet of the side air duct 22. This allows for the complete independent cutoff of the two air sources (e.g., maintenance of one air duct does not affect the operation of another air duct) and the simultaneous opening of the two air sources, effectively improving the stability and scene adaptability of the dual air ducts of the air duct component 20 during air supply.

[0037] For example, the first control component 32 and the second control component 33 work together. When the first control component 32 opens the inlet of the left air duct component 20, the second control component 33 simultaneously opens the inlet of the front air duct 21. The air generated by the fan 10 will flow along the front air duct 21 of the left air duct component 20 to the front left side of the range hood 200. As another example, when the first control component 32 simultaneously opens the inlet of the left air duct component 20 and the inlet of the right air duct component 20, the second control component 33 simultaneously opens the inlet of the side air duct 22. The air generated by the fan 10 will flow along the side air duct 22 of the left air duct component 20 and the side air duct 22 of the right air duct component 20 to the left and right sides of the range hood 200, respectively.

[0038] Furthermore, combined Figures 5-7 As shown, the first control component 32 includes a first drive element 321 and a first valve core 322. The first drive element 321 is disposed in the valve housing 31, and the first valve core 322 is movably disposed in the valve cavity and connected to the first drive element 321. Under the action of the first drive element 321, the first valve core 322 selectively opens or closes at least one of the inlets of the plurality of air duct components 20. For example, the first drive element 321 can be a motor.

[0039] Among them, the valve housing 31 can ensure the airflow is sealed when passing through the control component 30. The fixed structure of the valve housing 31 can make the installation of the first drive component 321 and the first valve core 322 more stable, reducing the risk of displacement caused by airflow impact. The design of the first drive component 321 driving the first valve core 322 can achieve automated and precise control, thereby improving the accuracy and reliability of the air outlet operation.

[0040] In addition, the first valve core 322 can selectively open or close at least one of the inlets of multiple air duct components 20 within the valve cavity, which can effectively improve the flexibility of the zoned air supply effect of the air curtain structure 100.

[0041] Specifically, in combination Figures 5-9 As shown, the second control component 33 includes a second drive member 331 and a second valve core 332. The second drive member 331 is disposed in the valve housing 31, and the second valve core 332 is movably disposed in the valve cavity 311 and connected to the second drive member 331. Under the action of the second drive member 331, the second valve core 332 selectively opens or closes at least one of the front air duct 21 and the side air duct 22 of the plurality of air duct components 20. For example, the second drive member 331 can be a motor.

[0042] Among them, the valve housing 31 can ensure the airflow is sealed when passing through the control component 30. The fixed structure of the valve housing 31 can make the installation of the second drive component 331 and the second valve core 332 more stable, reducing the risk of displacement caused by airflow impact. The design of the second drive component 331 driving the second valve core 332 can achieve automated and precise control, thereby improving the accuracy and reliability of the air outlet operation.

[0043] In addition, the second valve core 332 can selectively open and close at least one of the front air duct 21 and side air duct 22 of the multiple air duct components 20 within the valve cavity 311, which can effectively improve the flexibility of the zoned air supply effect of the air curtain structure 100.

[0044] Furthermore, a partition plate 312 is provided inside the valve housing 31 to divide the valve cavity 311 into a front valve cavity 3111 and a side valve cavity 3112. The front valve cavity 3111 is arranged opposite to the inlet of a plurality of front air ducts 21, and the side valve cavity 3112 is arranged opposite to the inlet of a plurality of side air ducts 22. A clearance notch 3221 is provided in the middle of the first valve core 322, and the partition plate 312 passes through the clearance notch 3221.

[0045] Understandably, the partition plate 312 inside the valve housing 31 can divide the valve chamber 311 into two chambers (that is, the front valve chamber 3111 for connecting with multiple front air ducts 21 and the side valve chamber 3112 for connecting with multiple side air ducts 22). The first valve core 322 is provided with an avoidance notch 3221 in the middle. This allows the partition plate 312 to ensure that the first valve core 322 can normally perform the function of opening and closing at least one of the inlets of multiple air duct components 20 without structural interference risk with the first valve core 322, thereby improving the design rationality of the first valve core 322.

[0046] For example, combining Figures 2-9 As shown, the multiple air duct components 20 include a left air duct component 20 and a right air duct component 20. When the first valve core 322 is centered (that is, in the state where the inlets of the left air duct component 20 and the right air duct component 20 are simultaneously open), and the second valve core 332 is centered (that is, in the state where the front air duct 21 and the side air duct 22 of the left air duct component 20 and the right air duct component 20 are simultaneously open), the front air duct 21 and the side air duct 22 of the left air duct component 20 and the right air duct component 20 both expel air outwards; when the first valve core 322 is centered (that is, in the state where the inlets of the left air duct component 20 and the right air duct component 20 are simultaneously open), the second valve core 332 expels air outwards. When the first valve core 332 is in the center (i.e., in the state where the side air ducts 22 of the left and right air duct components 20 and 20 are simultaneously open), the second valve core 332 moves to close the side air duct 22 (i.e., in the state where the inlets of the left and right air duct components 20 and 20 are simultaneously open), the second valve core 332 moves to close the side air duct 22 (i.e., in the state where the front air ducts 21 of the left and right air duct components 20 and 20 are simultaneously open), the front air ducts 21 of the left and right air duct components 20 and 20 are simultaneously open, and the front air ducts 21 of the left and right air duct components 20 and 20 are simultaneously open, and the front air ducts 21 of the left and right air duct components 20 are simultaneously open, and the front air ducts 21 of the left and right air duct components 20 are simultaneously open, and the front air ducts 21 of the left and right air duct components 20 are simultaneously open, and the front air ducts 21 of the left and right air duct components 20 are simultaneously open, and the front air ducts 22 of the left and right air duct components 20 are simultaneously open, and the front air ducts 22 of the left and right air duct components 20 are simultaneously open, and the front air ducts 22 of the left and right air duct components 20 are simultaneously open, and the front air ducts 22 of the left and right air duct components 20 are simultaneously open, and the front air ducts 22 of the right ...

[0047] For example, combining Figures 2-9 As shown, the multiple air duct components 20 include a left air duct component 20 and a right air duct component 20. When the first valve core 322 moves to close the inlet of the left air duct component 20 (that is, in the state of opening the inlet of the right air duct component 20), the second valve core 332 is centered (that is, in the state of simultaneously opening the front air duct 21 and the side air duct 22 of the right air duct component 20). At this time, the front air duct 21 and the side air duct 22 of the right air duct component 20 both expel air. When the first valve core 322 moves to close the inlet of the right air duct component 20 (that is, in the state of opening the inlet of the left air duct component 20), the second valve core 332 is centered (that is, in the state of simultaneously opening the front air duct 21 and the side air duct 22 of the left air duct component 20). At this time, the front air duct 21 and the side air duct 22 of the left air duct component 20 both expel air.

[0048] For example, combining Figures 2-9 As shown, the multiple air duct components 20 include a left air duct component 20 and a right air duct component 20. When the first valve core 322 moves to close the inlet of the left air duct component 20 (that is, in the state where the inlet of the right air duct component 20 is open), the second valve core 332 moves to close the front air duct 21 (that is, in the state where the side air duct 22 of the right air duct component 20 is open), at this time the side air duct 22 of the right air duct component 20 blows air outward; when the first valve core 322 moves to close the inlet of the left air duct component 20 (that is, in the state where the inlet of the right air duct component 20 is open), the second valve core 332 moves to close the side air duct 22 (that is, in the state where the front air duct 21 of the right air duct component 20 is open), at this time the right air duct component 20 blows air outward. The front air duct 21 of the left air duct 20 blows air outwards; when the first valve core 322 moves to close the inlet of the right air duct component 20 (that is, in the state where the inlet of the left air duct component 20 is open), the second valve core 332 moves to close the side air duct 22 (that is, in the state where the front air duct 21 of the left air duct component 20 is open), at this time the front air duct 21 of the left air duct component 20 blows air outwards; when the first valve core 322 moves to close the inlet of the right air duct component 20 (that is, in the state where the inlet of the left air duct component 20 is open), the second valve core 332 moves to close the front air duct 21 (that is, in the state where the side air duct 22 of the left air duct component 20 is open), at this time the side air duct 22 of the left air duct component 20 blows air outwards.

[0049] Specifically, in combination Figures 5-9 As shown, the first valve core 322 is provided with a rotating shaft 3222, and the first valve core 322 is rotatably disposed on the valve housing 31 via the rotating shaft 3222. The first control component 32 also includes a first transmission mechanism 323, which includes a first gear 3231 and a second gear 3232. The first gear 3231 is disposed on the first driving member 321, and the second gear 3232 is located outside the valve housing 31. The second gear 3232 is disposed on the rotating shaft 3222 of the first valve core 322, and the first gear 3231 meshes with the second gear 3232.

[0050] In other words, the driving force can be applied to the rotating shaft 3222 of the first valve core 322 in sequence along the transmission path of the first driving member 321-first gear 3231-second gear 3232. This can achieve the effect of the rotating shaft 3222 driving the first valve core 322 to rotate, which is conducive to the effect of the first valve core 322 selectively opening and closing at least one of the inlets of multiple air duct members 20.

[0051] Among them, gear meshing transmission has the advantages of high transmission efficiency (compared to belt and chain transmission, gear transmission can reduce power loss), stable torque transmission (close contact between tooth surfaces avoids power interruption caused by slippage), and good load distribution (shaft and gear each bear their corresponding force, reducing the risk of overload of a single component).

[0052] Optionally, the first gear 3231 is connected to the first drive member 321 (since the output speed of the first drive member 321 may be too high and the torque insufficient). At this time, the first gear 3231 on the first drive member 321 and the second gear 3232 outside the valve housing 31 are meshed and transmitted through different gear ratios (usually the number of teeth of the first gear 3231 is less than the number of teeth of the second gear 3232). This can not only smoothly convert the high speed of the first drive member 321 into the low speed of the rotating shaft 3222 to adapt to the opening and closing of the inlet, but also synchronously amplify the torque and improve the load capacity of the first valve core 322.

[0053] Specifically, in combination Figures 10-13 As shown, one end of the first valve core 322 is rotatably disposed on the valve housing 31. The first control component 32 also includes a second transmission mechanism 324. The second transmission mechanism 324 includes a lead screw 3241, a translation block 3251, and a connecting rod 3261. The lead screw 3241 is connected to the first driving member 321. The translation block 3251 is slidably disposed in the valve cavity 311 and is rotatably connected to the first valve core 322. The translation block 3251 is threadedly engaged with the lead screw 3241. One end of the connecting rod 3261 is rotatably connected to the other end of the first valve core 322. The translation block 3251 is provided with a through hole 3251, and the connecting rod 3261 is slidably disposed through the through hole 3251. The axial direction of the connecting rod 3261 is perpendicular to the axial direction of the lead screw 3241.

[0054] It is understandable that the lead screw 3241 and the first driving member 321 are coaxially arranged. The lead screw 3241 has an external thread on its outer circumference, and the translation block 3251 is threadedly engaged with the external thread on the lead screw 3241. When the first driving member 321 drives the lead screw 3241 to rotate, the relative rotation between the lead screw 3241 and the translation block 3251 will be converted into a translational movement of the translation block 3251 along the axial direction of the lead screw 3241. Since the translation block 3251 and the first valve core 322 are rotatably connected, when the translation block 3251 translates along the axial direction of the lead screw 3241, the translation block 3251 drives the first valve core 322 to rotate in the direction of translation. This facilitates the rotation of the first valve core 322 to different positions within the valve cavity 311, thereby successfully achieving the effect of selectively closing at least one inlet of the multiple air duct components 20.

[0055] Furthermore, the translation block 3251 is provided with a through hole 3252, and the connecting rod 3261 is slidably inserted through the through hole 3252. Since the distance between the lead screw 324 and one end of the first valve core 322 is fixed, when the translation block 3251 drives the connecting rod 3261 to translate, the connecting rod 3261 will drive the other end of the first valve core 322 to rotate. This will cause the distance between the other end of the first valve core 322 and the lead screw 3241 to change. At this time, since the connecting rod 3261 is slidably inserted through the through hole 3252 of the translation block 3251, it is convenient for the connecting rod 3261 to adjust the length of the lead screw 3241 extending out of the through hole 3252 accordingly. This avoids the risk of structural interference between the connecting rod 3261 and the translation block 3251, and also ensures the smooth rotation of the first valve core 322, thereby ensuring the reliability of the opening and closing operation of the first control component 32.

[0056] Furthermore, when the axial direction of the connecting rod 3261 is perpendicular to the axial direction of the lead screw 3241, the driving force generated by the translation block 3251 moving along the axial direction of the lead screw 3241 can be completely converted into a rotational torque perpendicular to the axis of the first valve core 322. At this time, the direction of the driving force is completely consistent with the direction of the force on the connecting rod 3261, which can avoid component force loss (such as radial component force easily generated when the connecting rod 3261 is tilted, causing additional friction loss of the lead screw 3241 or the translation block 3251), thereby ensuring that the driving force can be accurately applied to the rotation of the first valve core 322, thereby improving the transmission efficiency.

[0057] Furthermore, combined Figure 10 and Figure 11 As shown, each air duct component 20 includes an air duct body 23 and a partition 24. The partition 24 extends within the air duct body 23 and divides the internal space of the air duct body 23 into a front air duct 21 and a side air duct 22. The end of the partition 24 away from the control component 30 is connected to the air duct body 23, and the end of the partition 24 near the control component 30 divides the air duct body 23 into the inlet of the front air duct 21 and the inlet of the side air duct 22.

[0058] Understandably, the partition 24 can directly divide the internal space of the air duct body 23 into a front air duct 21 and a side air duct 22. The end of the partition 24 closest to the control component 30 separates the inlet of the front air duct 21 and the inlet of the side air duct 22 within the air duct body 23. This makes it easier for the control component 30 to directly and accurately guide the adjusted air source to the corresponding air duct, thereby improving the air output efficiency. The end of the partition 24 furthest from the control component 30 is connected to the air duct body 23, which further ensures the independence of the airflow in the two air ducts throughout the entire delivery process. This allows the air pressure output by the fan 10 to act more efficiently on the designated delivery air duct, thereby ensuring that both the front air duct 21 and the side air duct 22 can obtain a stable air source supply.

[0059] Specifically, in combination Figure 10 and Figure 11 As shown, the main body of the air duct 23 includes a front air duct section 231 and a side air duct section 232. The front air duct section 231 extends in the left-right direction, and the side air duct section 232 extends in the front-back direction. The front end of the side air duct section 232 is connected to the front air duct section 231. The baffle 24 extends at least within the front air duct section 231. The front air duct 21 is located below the baffle 24 within the front air duct section 231. A portion of the side air duct 22 is located above the baffle 24 within the front air duct section 231, and another portion is located within the side air duct section 232.

[0060] Understandably, the front air duct section 231 primarily provides a flow channel for air to flow in the left-right direction along the entire air duct body 23, while the side air duct section 232 primarily provides a flow channel for air to flow in the front-back direction along the entire air duct body 23. In the vertical direction, the baffle 24 divides the front air duct section 231 into two parts. The portion located below the baffle 24 within the front air duct section 231 defines the front air duct 21, while the other portion located above the baffle 24 within the front air duct section 231 forms part of the side air duct 22. Thus, by setting a simple baffle 24 structure, the front air duct 21 is separated, and the side air duct 22 can also establish an air supply relationship with the fan 10 using the other portion of the front air duct section 231 separated by the baffle 24. In summary, through the cooperation of the front air duct section 231 and the side air duct section 232, the air generated by the fan 10 can flow smoothly from the control component 30 to the front air duct 21 and the side air duct 22.

[0061] Furthermore, combined Figure 2 , Figure 3 and Figure 11 As shown, the front air duct 21 has a plurality of spaced front air inlets 211 along the air supply direction, and the front air inlets 211 extend at least partly in the left and right direction. The side air duct 22 has a plurality of spaced side air inlets 221 along the air supply direction, and the side air inlets 221 extend in the front and back direction. The front air inlets 211 and the side air inlets 221 are used to exhaust air from the casing 201 of the range hood 200.

[0062] Understandably, the front air vent 211 within the front air duct 21 allows air from the front air duct 21 to be blown out along the front air vent 211, which extends in the left and right directions. This facilitates the formation of an airflow barrier extending in the left and right directions, thereby preventing the spread of cooking fumes from the open front of the range hood 200. Similarly, the side air vent 221 within the side air duct 22 allows air from the side air duct 22 to be blown out along the side air vent 221, which extends in the front and back directions. This facilitates the formation of an airflow barrier extending in the front and back directions, thereby preventing the spread of cooking fumes from the open sides of the range hood 200. In summary, by adapting the front air vent 211 and side air vent 221 to the external dimensions of the range hood 200, the fume blocking capability of the air curtain structure 100 can be effectively improved.

[0063] In addition, there are multiple front air vents 211, which helps to increase the extension size of the front air vents 211 in the left and right directions at the front of the range hood 200, thereby ensuring the coverage of the airflow barrier (that is, the airflow barrier formed by the air blown out from the front air vents 211), avoiding blind spots, and improving the oil fume blocking effect; there are multiple side air vents 221, which helps to increase the extension size of the side air vents 221 in the front and back directions at the side of the range hood 200, thereby ensuring the coverage of the airflow barrier (that is, the airflow barrier formed by the air blown out from the side air vents 221), avoiding blind spots, and improving the oil fume blocking effect.

[0064] Furthermore, combining Figure 3 , Figure 11 and Figure 13 As shown, a first diverter plate 212 is provided between two adjacent front air vents 211 in the front air duct 21 to divert the air in the front air duct 21, and a second diverter plate is provided between two adjacent side air vents 221 in the side air duct 22 to divert the air in the side air duct 22.

[0065] In addition, a first diverter plate 212 is provided between two adjacent front air vents 211 in the front air duct 21 to divert the air in the front air duct 21. That is, the first diverter plate 212 can physically separate and guide the airflow, and evenly distribute the air in the front air duct 21 to the two adjacent front air vents 211. This ensures that the front air vents 211 at different positions under the same air duct can obtain a stable air volume, avoiding the problem of excessive or weak air supply from individual front air vents 211. Moreover, the first diverter plate 212 can also sort out the airflow direction in the front air duct 21, reduce the cross interference of adjacent airflows, and allow the airflow to be delivered from each front air vent 211 in a more stable state, reduce the airflow noise in the front air duct 21, improve the uniformity of air supply, and ensure the stability of the airflow barrier. Moreover, the first diversion plate 212 does not require complex electrical control components. It can achieve efficient diversion through structural design alone. While improving the air supply quality, it reduces the maintenance cost and failure risk of the air curtain structure 100, and further enhances the reliability and economy of the air supply from the front air duct 21.

[0066] Similarly, a second diverter plate is installed between two adjacent side air outlets 221 within the side air duct 22 to divert the airflow within the side air duct 22. In other words, the second diverter plate can guide the airflow through physical separation, evenly distributing the airflow within the side air duct 22 to the two adjacent side air outlets 221. This ensures that side air outlets 221 at different locations within the same air duct receive a stable airflow, avoiding excessively strong or weak airflow from individual side air outlets 221. Furthermore, the second diverter plate can also streamline the airflow direction within the side air duct 22, reducing cross-interference between adjacent airflows and allowing the airflow to exit from each side air outlet 221 in a more stable manner. This reduces airflow noise within the side air duct 22, improves airflow uniformity, and ensures the stability of the airflow barrier. Moreover, the second diverter plate does not require complex electronic control components; efficient diversion can be achieved solely through structural design. While improving airflow quality, it reduces the maintenance costs and failure risks of the air curtain structure 100, further enhancing the reliability and economy of the airflow from the side air duct 22.

[0067] Combination Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 10As shown, the range hood 200 according to the second aspect embodiment of the present invention includes a housing 201 and an air curtain structure 100 of the range hood 200 described above. The housing 201 is provided with a top plate 202, and the top plate 202 is provided with multiple air curtain outlets 203. The air curtain structure 100 is disposed inside the housing 201, and each air duct component 20 corresponds to at least one air curtain outlet 203. The housing 201, as the main load-bearing structural component of the external contour of the range hood 200, can protect the internal related structures (such as the air curtain structure 100) and also provides a certain degree of sound insulation, reducing the noise generated by the range hood 200 during operation.

[0068] Specifically, the top plate 202 on the casing 201 can prevent the cooking fumes from spreading upwards. The top plate 202 is provided with multiple air curtain outlets 203 (for example, a front air curtain outlet 204 is provided at the front of the top plate 202, and side air curtain outlets 205 are provided on the left and right sides of the top plate 202). The front air curtain outlet 204 can extend only in the left and right direction, or it can extend partly in the left and right direction and then extend in the front and back directions. This allows the air curtain structure 100 to discharge air downwards through the front air curtain outlet 204. In this way, an airflow barrier can be formed along the airflow direction of the front air curtain outlet 204, thereby preventing the cooking fumes from spreading from the open area at the front of the top plate 202. The side air curtain outlets 205 extend in the front and back direction, which also allows the air curtain structure 100 to discharge air downwards through the side air curtain outlets 205. In this way, two airflow barriers can be formed along the airflow direction of the side air curtain outlets 205, thereby preventing the cooking fumes from spreading from the open areas on the left and right sides of the top plate 202.

[0069] In addition, each air duct component 20 has at least one air curtain outlet 203, which facilitates the smooth flow of air energy in the air duct component 20 through the top plate 202 to the outside of the casing 201, thereby successfully achieving the effect of forming an airflow barrier.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air curtain structure (100) for a range hood (200), characterized in that, include: Fan (10); Multiple air duct components (20) extend in different directions; A control component (30) is connected between the fan (10) and the plurality of the air duct components (20) to selectively open or close at least one of the plurality of the air duct components (20).

2. The air curtain structure (100) of the range hood (200) according to claim 1, characterized in that, The air duct component (20) includes a front air duct (21) that guides airflow to the front of the range hood (200) and a side air duct (22) that guides airflow to one side of the range hood (200) in the left-right direction. The control component (30) selectively opens or closes at least one of the front air duct (21) and the side air duct (22) in the air duct component (20).

3. The air curtain structure (100) of the range hood (200) according to claim 2, characterized in that, The control component (30) includes: Valve housing (31), one end of which is connected to the fan (10) and the other end is connected to the inlet of a plurality of air duct components (20), and a valve cavity (311) is formed inside the valve housing (31). A first control component (32) is disposed on the valve housing (31) and selectively opens or closes the inlet of at least one of the plurality of air duct components (20); The second control component (33) is disposed on the valve housing (31). The second control component (33) is disposed at a distance from the first control component (32). The second control component (33) selectively opens and closes the front air duct (21) and the side air duct (22) of the plurality of air duct components (20).

4. The air curtain structure (100) of the range hood (200) according to claim 3, characterized in that, The first control component (32) includes: A first driving member (321) is disposed on the valve housing (31). A first valve core (322) is movably disposed within the valve cavity (311) and connected to the first drive member (321). Under the action of the first drive member (321), the first valve core (322) selectively opens or closes at least one of the inlets of the plurality of air duct components (20); and / or The second control component (33) includes: The second drive member (331) is disposed on the valve housing (31). The second valve core (332) is movably disposed in the valve cavity (311) and connected to the second drive member (331). Under the action of the second drive member (331), the second valve core (332) selectively opens and closes at least one of the front air duct (21) and the side air duct (22) of the plurality of air duct members (20).

5. The air curtain structure (100) of the range hood (200) according to claim 4, characterized in that, A partition plate (312) is provided inside the valve housing (31) to divide the valve chamber (311) into a front valve chamber (3111) and a side valve chamber (3112). The front valve chamber (3111) is arranged opposite to the inlet of a plurality of front air ducts (21), and the side valve chamber (3112) is arranged opposite to the inlet of a plurality of side air ducts (22). A clearance notch (3221) is provided in the middle of the first valve core (322), and the partition plate (312) passes through the clearance notch (3221).

6. The air curtain structure (100) of the range hood (200) according to claim 4, characterized in that, The first valve core (322) is provided with a rotating shaft (3222) and is rotatably disposed on the valve housing (31) via the rotating shaft (3222). The first control component (32) further includes: The first transmission mechanism (323) includes a first gear (3231) and a second gear (3232). The first gear (3231) is disposed on the first driving member (321), and the second gear (3232) is located outside the valve housing (31) and disposed on the rotating shaft (3222) of the first valve core (322). The first gear (3231) meshes with the second gear (3232).

7. The air curtain structure (100) of the range hood (200) according to claim 4, characterized in that, One end of the first valve core (322) is rotatably disposed on the valve housing (31), and the first control component (32) further includes: The second transmission mechanism (324) includes a lead screw (3241), a translation block (3251), and a connecting rod (3261). The lead screw (3241) is connected to the first driving member (321). The translation block (3251) is slidably disposed in the valve cavity (311) and rotatably connected to the first valve core (322). The translation block (3251) is threadedly engaged with the lead screw (3241). One end of the connecting rod (3261) is rotatably connected to the other end of the first valve core (322). The translation block (3251) is provided with a through hole (3252), and the connecting rod (3261) is slidably inserted through the through hole (3252). The axial direction of the connecting rod (3261) is perpendicular to the axial direction of the lead screw (3241).

8. The air curtain structure (100) of the range hood (200) according to any one of claims 2-7, characterized in that, Each of the aforementioned air duct components (20) includes: Main body of the air duct (23); A partition (24) extends within the air duct body (23) and divides the internal space of the air duct body (23) into the front air duct (21) and the side air duct (22). The end of the partition (24) away from the control component (30) is connected to the air duct body (23), and the end of the partition (24) near the control component (30) separates the inlet of the front air duct (21) and the inlet of the side air duct (22) within the air duct body (23).

9. The air curtain structure (100) of the range hood (200) according to claim 8, characterized in that, The main body of the air duct (23) includes a front air duct section (231) and a side air duct section (232). The front air duct section (231) extends in the left-right direction, and the side air duct section (232) extends in the front-back direction and its front end is connected to the front air duct section (231). The partition (24) extends at least within the front air duct section (231). The front air duct (21) is located below the partition (24) within the front air duct section (231). A portion of the side air duct (22) is located above the partition (24) within the front air duct section (231), and another portion is located within the side air duct section (232). The front air duct (21) has a plurality of spaced front air inlets (211) along the air supply direction, and the front air inlets (211) extend at least partially along the left and right direction. The side air duct (22) has a plurality of spaced side air inlets (221) along the air supply direction, and the side air inlets (221) extend along the front and back direction. The front air inlets (211) and the side air inlets (221) are used to exhaust air to the casing (201) of the range hood (200). A first diverter plate (212) is provided between two adjacent front air inlets (211) in the front air duct (21) to divert the air in the front air duct (21), and a second diverter plate (222) is provided between two adjacent side air inlets (221) in the side air duct (22) to divert the air in the side air duct (22).

10. A range hood (200), characterized in that, include: The housing (201) is provided with a top plate (202), and the top plate (202) is provided with multiple air curtain outlets (203). The range hood (200) according to any one of claims 1-9 has an air curtain structure (100) disposed inside the housing (201), and each of the air duct components (20) has at least one of the air curtain outlets (203).

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