Lift head assembly and extractor hood

Abstract

The present application relates to the technical field of kitchen appliances, and provides a lifting head assembly and a range hood. The lifting head assembly comprises a fixing assembly, a lifting assembly, a driving assembly and an oil-proof structure. The driving assembly comprises a driving member and a moving member. The driving member is connected to the fixing assembly. The driving member is power-coupled with the moving member to drive the moving member to move up and down. The moving member is connected to the lifting assembly. The oil-proof structure is connected to the lifting assembly and surrounds the moving member. The lifting head assembly provided by the present application has the oil-proof structure surrounding the moving member to protect the moving member, avoid oil stains from adhering to the surface of the moving member to affect the movement of the moving member, improve the reliability and stability of the moving member, and avoid abnormal sound and jamming.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to a lifting head assembly and a range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. Installed above the stove, it extracts cooking fumes and steam to exhaust them outdoors, reducing indoor pollution, purifying the air, and providing safety features such as protection against poisoning and explosions. Range hoods have become an indispensable kitchen appliance in modern homes.

[0003] As range hoods become increasingly popular, their styles have also diversified, resulting in various models such as European, side-draft, and Chinese-style. Each type of range hood, including European, side-draft, and wall-mounted models, has its limitations. For example, the air inlet of a European-style range hood is relatively far from the cooking appliance, causing a large amount of fumes to condense on the wall; side-draft range hoods can obstruct the user's view, and when using tall steamers, the pot may touch the range hood; wall-mounted range hoods are more effective at removing fumes when using shorter woks, but they are ineffective when using taller steamers.

[0004] To address the aforementioned issues, a novel lift-up range hood has been designed to meet the diverse needs of kitchen scenarios and is gradually gaining popularity among consumers. The lift-up range hood solves the problem of cookware colliding with the hood through adjustable height. During use, the height of the lower air inlet can be adjusted according to the height of the cookware, drawing in a portion of the smoke, while the top air inlet also draws in some, thus meeting the smoke extraction requirements.

[0005] However, the drive components of lift-type range hoods are easily contaminated by oil stains, which can cause resistance during the lifting process. Long-term use can make it difficult to adjust the lifting components. Summary of the Invention

[0006] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a lifting head assembly in which an oil-proof structure surrounds the moving parts to protect them, preventing oil stains from adhering to the surface of the moving parts and affecting their movement, thereby improving the reliability and stability of the moving parts and avoiding problems such as abnormal noise and jamming.

[0007] The present invention also proposes a range hood.

[0008] According to a first aspect of the present invention, a lifting head assembly includes:

[0009] Fixed components;

[0010] Lifting assembly;

[0011] A drive assembly includes a drive component and a moving component, the drive component being connected to the fixed assembly, the drive component being dynamically coupled to the moving component to drive the moving component to move up and down, and the moving component being connected to the lifting assembly;

[0012] An oil-resistant structure is connected to the lifting assembly and surrounds the moving part.

[0013] According to the lifting head assembly of the present invention, under the driving power provided by the driving component, the moving component performs lifting motion, and the movement of the moving component drives the lifting assembly to move up and down relative to the fixed component. During the movement of the moving component, the oil-proof structure surrounds the moving component to protect it, prevents oil stains from adhering to the surface of the moving component and affecting its movement, improves the reliability and stability of the moving component, and avoids abnormal noise and jamming problems.

[0014] According to one embodiment of the present invention, the oil-proof structure includes a first oil-proof plate and a second oil-proof plate, and the lifting assembly includes a first front wall plate and a first rear wall plate. The first front wall plate is configured with a first oil-proof part, and the first rear wall plate is configured with a second oil-proof part. The first oil-proof part, the second oil-proof part, the first oil-proof plate and the second oil-proof plate are connected to form a closed-loop structure to surround the side wall of the moving member.

[0015] According to one embodiment of the present invention, the first front wall panel is configured with an air inlet, which is distributed on both sides of the first oil-proof part.

[0016] According to one embodiment of the present invention, the fixing component is provided with a first guide portion, and the lifting component is provided with a second guide portion adapted to the first guide portion, wherein the first guide portion and the second guide portion are adapted to move relative to each other along the lifting direction of the lifting component.

[0017] According to one embodiment of the present invention, the first guide portion is provided on two opposite sides of the fixing component, the first guide portion extending along the height direction of the fixing component, and the second guide portion is provided on two opposite sides of the lifting component, the second guide portion being located at the upper part of the lifting component and hidden inside the fixing component.

[0018] According to one embodiment of the present invention, the fixing component includes a first frame and a first enclosure plate installed on the outside of the first frame, and the lifting component includes a second frame and a second enclosure plate installed on the outside of the second frame, wherein the first frame is sleeved on the outside of the second enclosure plate.

[0019] According to one embodiment of the present invention, at least one of the first frame and the second frame is assembled by aluminum profiles.

[0020] According to one embodiment of the present invention, the driving assembly further includes a fixing member sleeved on the outside of the movable member, the fixing member being connected to the fixing assembly, and the movable member moving up and down along the extending direction of the fixing member.

[0021] According to one embodiment of the present invention, the drive assembly further includes a protective member disposed outside the drive member, and the fixing assembly includes a top plate, a second front wall plate, and a second rear wall plate, wherein the protective member, the second front wall plate, the second rear wall plate, and the top plate surround the drive member.

[0022] According to one embodiment of the present invention, the fixing component is connected to a first oil receiving part; a first gap is provided between the lifting component and the first oil receiving part; the lifting component is connected to a second oil receiving part located above the first oil receiving part; a second gap is provided between the second oil receiving part and the fixing component; and the orthographic projections of the first gap and the second gap on the horizontal plane are offset from each other.

[0023] According to a second aspect of the present invention, a range hood includes a frame assembly and a lifting head assembly as described above, wherein the fixing assembly is connected to the frame assembly.

[0024] According to one embodiment of the present invention, a fan assembly is provided inside the frame assembly, and an air outlet communicating with the fan assembly is provided on the second front wall plate of the fixing assembly.

[0025] According to one embodiment of the present invention, a flow guiding component is connected to the lower end of the rack assembly, and the flow guiding component is installed on the front side of the fixing component.

[0026] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0027] In the lifting head assembly of this invention, under the driving power provided by the driving component, the moving component performs lifting motion, and the movement of the moving component drives the lifting assembly to move up and down relative to the fixed component. During the movement of the moving component, the oil-proof structure surrounds the moving component to protect it, prevents oil stains from adhering to the surface of the moving component and affecting its movement, improves the reliability and stability of the moving component, and avoids abnormal noise and jamming problems.

[0028] Furthermore, the range hood of this embodiment of the invention includes the aforementioned lifting head assembly, which helps to improve the operational stability of the range hood and avoid abnormal noise, thereby reducing the overall noise of the range hood and improving the user experience.

[0029] Additional aspects and advantages of the 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

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a structural schematic diagram of the lifting head assembly provided in an embodiment of the present invention, wherein the first enclosure is in a disassembled state;

[0032] Figure 2 This is a structural schematic diagram of the lifting head assembly provided in an embodiment of the present invention, in which the first and second enclosure plates are in a disassembled state;

[0033] Figure 3 This is a structural schematic diagram of the lifting head assembly provided in an embodiment of the present invention. The first and second enclosures are not shown in the figure.

[0034] Figure 4 This is a structural schematic diagram of the lifting head assembly provided in an embodiment of the present invention. Figure 1 Based on this, the first oil receiving part and the second oil receiving part are further disassembled;

[0035] Figure 5 This is a longitudinal sectional view of the lifting head assembly provided in an embodiment of the present invention;

[0036] Figure 6 yes Figure 5 A magnified schematic diagram of a portion of part A in the middle;

[0037] Figure 7 This is a three-dimensional structural diagram of the lifting head assembly provided in an embodiment of the present invention. The first enclosure plate of the fixing assembly is not shown in the figure.

[0038] Figure 8 yes Figure 7 A magnified schematic diagram of a portion of the structure at point B.

[0039] Figure 9 This is a front view structural diagram of the lifting head assembly provided in an embodiment of the present invention. The second front wall plate of the fixing assembly is not shown in the figure.

[0040] Figure 10 yes Figure 9 A magnified schematic diagram of the central C section;

[0041] Figure 11 This is a three-dimensional structural diagram of the second oil receiving part of the lifting head assembly provided in an embodiment of the present invention;

[0042] Figure 12 This is a three-dimensional structural diagram of the first oil receiving part of the lifting head assembly provided in an embodiment of the present invention;

[0043] Figure 13 This is a three-dimensional structural diagram of the range hood provided in an embodiment of the present invention. In the diagram, the lifting component is in the extended state.

[0044] Figure 14 This is a three-dimensional structural diagram of the range hood provided in an embodiment of the present invention. In the diagram, the lifting component is in a retracted state.

[0045] Figure 15 This is a schematic diagram of the structure of the range hood provided in an embodiment of the present invention. In the diagram, the frame assembly and the air guide assembly are in the installed state, while the lifting head assembly is in the uninstalled state.

[0046] Figure 16 This is a schematic diagram of the disassembled state of the range hood provided in an embodiment of the present invention.

[0047] Figure 17 This is a structural schematic diagram of the disassembled state of the airflow guiding component of the range hood provided in an embodiment of the present invention;

[0048] Figure 18 This is a longitudinal cross-sectional view of the frame assembly and airflow guide assembly of the range hood provided in an embodiment of the present invention, wherein the cross-sectional plane in the figure is parallel to the side of the range hood.

[0049] Figure 19 yes Figure 18 A magnified schematic diagram of the structure of part D in the middle;

[0050] Figure 20 This is a longitudinal cross-sectional view of the frame assembly and airflow guide assembly of the range hood provided in an embodiment of the present invention, wherein the cross-sectional plane in the figure is parallel to the front of the range hood.

[0051] In the above-mentioned attached figures, the arrows indicate the flow path of the condensed oil droplets.

[0052] Figure label:

[0053] 100: Lifting head assembly; 110: Fixing assembly; 111: First guide section; 112: First frame; 113: First enclosure panel; 1131: Air outlet; 1132: Second cavity; 1133: Second front wall panel; 1134: Second rear wall panel; 120: Lifting assembly; 121: Second guide section; 122: Second frame; 123: Second enclosure panel; 1231: First front wall panel; 1232: First rear wall panel; 1233: Air inlet; 1234: First cavity; 1235: Second oil cup; 130: First oil receiving section; 131: First opening; 132: Groove; 133: First oil nozzle; 1331: Second through hole; 140: Second oil receiving part; 141: First oil guiding part; 1411: First connecting part; 1412: Inclined part; 142: Second oil guiding part; 1421: Second connecting part; 1422: Partition part; 1423: Groove; 150: First gap; 160: Second gap; 180: Drive assembly; 181: Drive component; 182: Moving component; 183: Fixing component; 184: Protective component; 185: Connecting plate; 186: Mounting base; 190: Oil-proof structure; 191: First oil-proof plate; 192: Third oil-proof plate; 193: Second oil-proof plate;

[0054] 200: Flow guiding assembly; 210: First flow guiding component; 211: Flow guiding section; 2111: Mounting port; 212: Oil collecting section; 213: First through hole; 214: Smoke collecting section; 220: Frame; 230: First oil cup; 240: Second flow guiding component; 241: Second opening; 242: Front wall surface; 243: Rear wall surface; 250: Second oil nozzle; 251: First protrusion; 252: Second protrusion; 253: Third through hole; 254: Fourth through hole; 260: Panel; 270: Cover plate; 280: Oil screen;

[0055] 300: Rack assembly; 310: Decorative component; 320: Third cavity;

[0056] 400: Fan assembly. Detailed Implementation

[0057] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0058] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship of the range hood in its operating state. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0059] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0060] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] An embodiment of the first aspect of the present invention, in conjunction with Figures 1 to 12 As shown, a lifting head assembly 100 is provided, including a fixed assembly 110, a lifting assembly 120, a drive assembly 180, and an oil-proof structure 190. The drive assembly 180 includes a drive member 181 and a moving member 182. The drive member 181 is connected to the fixed assembly 110, and the drive member 181 and the moving member 182 are dynamically coupled to drive the moving member 182 to move up and down. The moving member 182 is connected to the lifting assembly 120. The oil-proof structure 190 is connected to the lifting assembly 120 and surrounds the moving member 182.

[0063] In related technologies, oil condenses on the moving part 182 during use, affecting the lifting and lowering of the moving part 182 driven by the drive part 181, which may cause abnormal noise or the moving part 182 to jam.

[0064] In this embodiment, under the driving power provided by the driving component 181, the moving component 182 performs a lifting motion, which in turn drives the lifting assembly 120 to move up and down relative to the fixed assembly 110. During the movement of the moving component 182, the oil-proof structure 190 surrounds the moving component 182 to protect it, preventing oil stains from adhering to the surface of the moving component 182 and affecting its movement, thus improving the reliability and stability of the moving component 182 and preventing abnormal noise and jamming problems.

[0065] In this embodiment, the movable component 182 is protected by the oil-proof structure 190, ensuring that the movable component 182 can be raised and lowered flexibly. This reduces the workload of cleaning the movable component 182, extends the stable raising and lowering adjustment time of the lifting assembly 120, and helps extend the service life of the range hood. Furthermore, the user only needs to clean the outer surface of the oil-proof structure 190, which can be constructed as a smooth surface, further reducing the cleaning workload. Through structural optimization, the lifting assembly 120 can smoothly adjust the height of the air inlet 1233 to suit different kitchen scenarios, thereby achieving optimal smoke extraction.

[0066] Understandably, the oil-proof structure 190 includes a first oil-proof plate 191 and a second oil-proof plate 193, and the lifting assembly 120 includes a first front wall plate 1231 and a first rear wall plate 1232. The first front wall plate 1231 has a first oil-proof part, and the first rear wall plate 1232 has a second oil-proof part. The first oil-proof part, the second oil-proof part, the first oil-proof plate 191, and the second oil-proof plate 193 are connected to form a closed-loop structure to surround the side wall of the moving member 182. The two oil-proof plates cooperate with the front and rear wall plates of the lifting assembly 120 to surround the moving member 182, making full use of the second enclosure plate 123 of the lifting assembly 120, resulting in a simple structure.

[0067] The first oil-proof plate 191 and the second oil-proof plate 193 are arranged opposite to each other, and the upper part of the first oil-proof plate 191 and the second oil-proof plate 193 is closed by the third oil-proof plate 192, which can fully protect the moving part 182.

[0068] The first oil-proof plate 191 and the second oil-proof plate 193 are fixed on the first rear wall plate 1232 of the lifting assembly 120. When the lifting assembly 120 moves, the oil-proof structure 190 moves synchronously with the lifting assembly 120. The oil fumes entering the interior of the lifting assembly 120 from the air inlet 1233 condense after contacting the outer wall of the oil-proof structure 190 and flow into the second oil cup 1235. The moving part 182 does not directly contact the oil fumes, which can effectively protect the normal extension and retraction of the moving part 182.

[0069] Of course, the oil-proof structure 190 can also be a closed-loop structure, in which case it does not need to be matched with the wall panel of the lifting assembly 120.

[0070] The oil-proof structure 190 and the wall panel of the lifting assembly 120 form a closed loop. The closed loop structure of the oil-proof structure 190 helps to reduce the weight of the lifting assembly 120.

[0071] Understandably, the first front wall panel 1231 is equipped with an air inlet 1233, which is distributed on both sides of the first oil-proof part so that the lifting assembly 120 can evenly draw in the smoke. The smoke on the front side of the lifting assembly 120 enters the first cavity 1234 of the lifting assembly 120 through the air inlet 1233, and then rises along the first cavity 1234 to the second cavity 1132 of the fixing assembly 110. The smoke in the second cavity 1132 is drawn out by the fan assembly 400 through the air outlet 1131 on the front side of the fixing assembly 110.

[0072] Understandably, reference Figures 1 to 4 As shown, the drive assembly 180 also includes a fixing member 183 sleeved on the outside of the movable member 182. The fixing member 183 is connected to the fixing assembly 110, and the movable member 182 moves up and down along the extending direction of the fixing member 183. When the lifting assembly 120 rises to its maximum height, that is, when the lifting assembly 120 retracts into the fixing assembly 110, the movable member 182 retracts into the fixing member 183. The fixing member 183 surrounds the outside of the movable member 182, and the fixing member 183 protects the movable member 182 and prevents oil from entering.

[0073] Among them, the fastener 183 can be made of aluminum profile. Aluminum is lightweight, which helps to reduce the weight of the range hood.

[0074] Understandably, in combination Figures 1 to 4As shown, the drive assembly 180 also includes a protective member 184 disposed outside the drive member 181. The fixing assembly 110 includes a top plate, a second front wall plate 1133, and a second rear wall plate 1134. The protective member 184, the second front wall plate 1133, the second rear wall plate 1134, and the top plate surround the drive member 181, which can enclose the drive member 181 in a relatively enclosed space to prevent oil contamination of the drive member 181. The protective member 184 is a plate covering both sides of the drive member 181. The protective member 184 is fixedly connected to the connecting plate 185. The connecting plate 185 is installed on the first frame 112 of the fixing assembly 110. The top plate is covered on the connecting plate 185 for easy assembly and disassembly.

[0075] The drive component 181 can be a linear motor, which drives the moving component 182 to adjust its height. The motor provides stable performance as a drive mechanism. One end of the motor is fixed to the top plate, and the other end is fixed to a fixed bracket, with two support brackets in the middle for further support.

[0076] Of course, the drive component 181 can also be a pressure-driven component, such as a cylinder or hydraulic cylinder. However, compared to pressure-driven components providing driving force, motor-driven methods offer more stable performance and are better suited to the working environment of range hoods.

[0077] Understandably, reference Figure 3 As shown, the movable part 182 is connected to the lifting assembly 120 at one end and is provided with a mounting base 186. The mounting base 186 is fixedly installed in the lifting assembly 120. The movable part 182 is inserted and fixed in the mounting base 186. The mounting base 186 is provided with reinforcing ribs on the outside. The mounting base 186 is fixed in the frame of the lifting assembly 120 by a plate.

[0078] Because the lifting assembly 120 has a large stroke, the moving part 182 is prone to shaking during movement, which can cause the left and right sides of the lifting assembly 120 to become asynchronous, jam, or shake. In this embodiment, the fixing part 183, the moving part 182, and the mounting base 186 form a three-section fixing structure. The two ends and the middle part of the moving part 182 are designed with fixing structures to prevent the moving part 182 of the large cantilever from shaking.

[0079] Understandably, in combination Figures 1 to 4 As shown, the fixing component 110 includes a first frame 112 and a first enclosure 113 installed on the outside of the first frame 112. The first enclosure 113 surrounds the first frame 112 and restricts the second cavity 1132. The upper end of the second cavity 1132 is closed by a top plate. The second cavity 1132 communicates with the first cavity 1234 of the lifting component. An air outlet 1131 is opened on the front side of the first enclosure 113. The fan component 400 discharges the flue gas in the second cavity 1132 through the air outlet 1131.

[0080] The first enclosure 113 includes a second front wall panel 1133, a second rear wall panel 1134, and a side wall panel connecting the second front wall panel 1133 and the second rear wall panel 1134. The second front wall panel 1133, the second rear wall panel 1134, and the side wall panel can be independent plates or integrally bent structures.

[0081] Combination Figures 1 to 4 As shown, the lifting assembly 120 includes a second frame 122 and a second enclosure 123 installed on the outside of the second frame 122. The second enclosure 123 surrounds the outside of the second frame 122 and restricts the first cavity 1234. The first frame 112 is sleeved on the outside of the second enclosure 123. The upper and lower ends of the second frame 122 are through structures. The second oil receiving part 140 is installed on the top of the second frame 122. The second oil receiving part 140 is always surrounded by the fixing assembly 110 to ensure the simplicity and aesthetics of the lifting assembly 120's appearance. The second enclosure 123 includes a first front wall panel 1231, a first rear wall panel 1232, a left wall panel, and a right wall panel. The first front wall panel 1231 has an air inlet 1233. The bottom of the second frame 122 is connected to a second oil cup 1235. The first front wall panel 1231, the first rear wall panel 1232, the left wall panel, and the right wall panel can be independent plates connected together to form the second enclosure panel 123, or integrally bent to form the second enclosure panel 123.

[0082] Understandably, the fact that at least one of the first frame 112 and the second frame 122 is assembled from aluminum profiles helps to reduce the weight of the elevator head assembly 100.

[0083] The first frame 112 can be made of aluminum or stainless steel profiles to ensure the stability of the fixing component 110. The second frame 122 can also be a frame structure made of aluminum profiles. The light weight of aluminum profiles can reduce the load on the drive component 180 and help save energy. The connection between adjacent aluminum profiles is reinforced with fixing plates to ensure the structural strength and stability of the second frame 122.

[0084] When the lifting stroke of the lifting assembly 120 is large, it is easy to cause shaking or jamming. In this embodiment, by building a fixed frame structure and cooperating with the accurate positioning of the first guide part 111 and the second guide part 121 in the following embodiment, smooth lifting can be achieved. Compared with fixing by sheet metal parts, the size and installation accuracy of the lifting head assembly in this embodiment are higher.

[0085] The entire lifting head assembly 100, including the fixing component 110 and the lifting component 120, adopts an aluminum profile frame structure. The use of aluminum profiles in the frame structure is mainly due to their low density and high strength, which can reduce weight. Each profile is machined or extruded, and the mounting holes are manufactured by machining. The dimensional accuracy and installation accuracy of the parts themselves are high. The frame structure can also ensure the structural strength of the entire module and avoid problems such as swaying and left-right asynchrony during the lifting process.

[0086] Understandably, reference Figure 7 and Figure 8 As shown, the fixing component 110 is provided with a first guide portion 111, and the lifting component 120 is provided with a second guide portion 121 adapted to the first guide portion 111. The first guide portion 111 and the second guide portion 121 are adapted to move relative to each other along the lifting direction of the lifting component 120. The first guide portion 111 and the second guide portion 121 cooperate to guide the lifting movement of the lifting component 120, thereby improving the stability of the lifting movement of the lifting component 120.

[0087] The first guide portion 111 is disposed on two opposite side walls of the fixed component 110, and correspondingly, the second guide portion 121 is disposed on two opposite side walls of the lifting component 120. The first guide portion 111 and the second guide portion 121 are disposed in one or more sets to ensure the guiding effect and help improve the movement stability of the lifting component 120.

[0088] The first guide portion 111 can be at least one of a guide rail and a guide block, and the second guide portion 121 can be at least one of a guide block and a guide rail that are compatible with the first guide portion 111; the specific selection can be made according to actual needs. (Reference) Figure 3 , Figure 4 , Figures 7 to 10 As shown, the first guide part 111 is a guide rail that extends along the height direction of the fixed component 110. The second guide part 121 is a guide block that is connected to the upper outer side of the lifting component 120. When the lifting component 120 is lowered to the lowest position, the second guide part 121 can be hidden inside the fixed component 110 to make the appearance of the lifting component 120 simple and beautiful.

[0089] It is understood that the fixed component 110 is provided with a first guide portion 111 on two opposite sides, the first guide portion 111 extends along the height direction of the fixed component 110, and the lifting component 120 is provided with a second guide portion 121 on two opposite sides, the second guide portion 121 is located at the upper part of the lifting component 120, and the second guide portion 121 is hidden inside the fixed component 110, so as to make the appearance structure of the lifting head component 100 simple.

[0090] refer to Figure 3 , Figure 4 , Figures 7 to 10 As shown, the first guide portions 111 are disposed on the left and right sides of the fixed assembly 110. The two first guide portions 111 provide guidance and support on the left and right sides of the lifting assembly 120, thereby improving the stability of the lifting assembly 120. Of course, the first guide portions 111 are not limited to being located on the left and right sides; the first guide portions 111 can also be disposed on the front and rear sides, depending on the specific needs.

[0091] The first guide part 111 is fixed to the first support plate of the second frame 122, and the second guide part 121 is fixed to the second support plate of the first frame 112.

[0092] It is understood that the fixing component 110 is connected to the first oil receiving part 130; the second enclosure 123 of the lifting component 120 is provided with a first gap 150 between it and the first oil receiving part 130; the lifting component 120 is connected to a second oil receiving part 140 located above the first oil receiving part 130; the second oil receiving part 140 is provided with a second gap 160 between it and the first enclosure 113 of the fixing component 110; the first gap 150 and the second gap 160 are offset from each other in the orthographic projection on the horizontal plane.

[0093] The lifting component 120 can move up and down relative to the fixed component 110. In order to ensure that the lifting component 120 can move stably and that there is no frictional resistance between the lifting component 120 and the fixed component 110, a gap is provided between the lifting component 120 and the fixed component 110. However, the oil stains that condense inside the fixed component 110 will also fall through this gap, which will cause oil dripping problems. Moreover, the oil stains will also adhere to the outer wall surface of the lifting component 120, affecting the surface cleanliness of the lifting component 120.

[0094] In this embodiment, the lifting assembly 120 is connected to the second oil receiving part 140, which is used to receive oil dripping from above. A second gap 160 is provided between the edge of the second oil receiving part 140 and the inner wall of the fixing assembly 110 to prevent the second oil receiving part 140 from contacting the inner wall of the fixing assembly 110, thereby preventing friction between the second oil receiving part 140 and the fixing assembly 110. The fixing assembly 110 is connected to the first oil receiving part 130, which is used to receive oil dripping from the side wall of the fixing assembly 110 and the second oil receiving part 140. A first gap 150 is provided between the edge of the first oil receiving part 130 and the outer wall of the lifting assembly 120 to prevent the first oil receiving part 130 from contacting the outer wall of the lifting assembly 120, thereby preventing friction between the first oil receiving part 130 and the lifting assembly 120, and ensuring stable lifting of the lifting assembly 120.

[0095] The first gap 150 and the second gap 160 are offset from each other in the horizontal plane, meaning their projections do not intersect. This ensures that the first oil-receiving part 130 can collect oil dripping from the second oil-receiving part 140, preventing oil from flowing out of the first gap 150. Furthermore, the first oil-receiving part 130 also collects oil dripping from the second gap 160 and the inner wall of the fixing component 110. In other words, the projections of the first oil-receiving part 130 and the second oil-receiving part 140 intersect in the horizontal plane, forming an annular region between the fixing component 110 and the lifting component 120. This annular region can be a circular ring, a rectangular ring, or other irregularly shaped ring; the specific shape of the ring can be adjusted according to actual needs and is not limited here.

[0096] In this embodiment, the first oil receiving part 130 and the second oil receiving part 140 cooperate to form a first gap 150 and a second gap 160 that are staggered in the height direction. This can prevent the contact and friction between the fixed component 110 and the lifting component 120, and can also effectively receive oil droplets dripping between the fixed component 110 and the lifting component 120, ensuring the cleanliness of the outer wall surface of the lifting component 120 and solving the oil passage problem between the lifting component 120 and the fixed component 110. Furthermore, the cooperation between the first oil receiving part 130 and the second oil receiving part 140 makes the gap between the fixed component 110 and the lifting component 120 form a staggered and connected structure. The staggered and connected structure can prevent flue gas from entering the second cavity 1132 inside the fixed component 110 from the gap between the fixed component 110 and the lifting component 120, thereby preventing oil stains from contacting the wall surface between the fixed component 110 and the lifting component 120, which can alleviate the problem of oil stains adhering to the outer wall of the lifting component 120. The outer wall of the lifting component 120 is the exterior surface of the range hood, and this embodiment solves the problem of oil stains flowing onto the exterior surface.

[0097] It should be noted that the fixing component 110 is generally fixedly installed on a fixed structure such as a wall or cabinet, but it is not limited to keeping the fixing component 110 stationary. The fixing component 110 can also be moved and adjusted, but it must be ensured that the lifting component 120 can move up and down relative to the fixing component 110.

[0098] refer to Figures 5 to 11 As shown, the second oil receiving part 140 includes a first oil guiding part 141, which includes a first connecting part 1411 and an inclined part 1412. The first connecting part 1411 is connected to the lifting assembly 120, and the inclined part 1412 extends obliquely downward along the end of the first connecting part 1411 in a direction away from the lifting assembly 120. The inclined part 1412 guides the oil downward so that the oil drips into the first oil receiving part 130 and is then discharged. The oil discharge method of the second oil receiving part 140 is simple and effective.

[0099] The first connecting part 1411 can be connected to the second frame 122 of the lifting assembly 120 by means of welding, snap-fitting, magnetic connection or fastener connection. The connection method of the first connecting part 1411 is diverse and can be selected according to actual needs.

[0100] refer to Figure 9 As shown, the first connecting part 1411 and the inclined part 1412 are integrally formed. The first oil guiding part 141 is bent to form the first connecting part 1411 and the inclined part 1412. The integral structure can prevent oil leakage from the connection gap between the first connecting part 1411 and the inclined part 1412, and ensure that the oil contaminants received by the second oil receiving part 140 fall accurately onto the first oil receiving part 130 along the inclined part 1412. Of course, the first connecting part and the inclined part can also be independent components (not shown in the figure). The first connecting part and the inclined part can be connected together by welding, snap-fit ​​magnetic connection or fastener connection.

[0101] refer to Figures 5 to 11 As shown, the second oil receiving part 140 includes a second oil guiding part 142, which is located on the side where the second guide part 121 is located. The second oil guiding part 142 includes a second connecting part 1421 and a partition part 1422 connected to the second connecting part 1421. The second connecting part 1421 is connected to the lifting assembly 120. The second connecting part 1421 and the partition part 1422 form a groove 1423 with a receiving interface on the top.

[0102] The second oil guide section 142 is used to receive oil stains above the second guide section 121. The oil stains fall into the tank 1423 through the receiving interface and are guided into the first oil receiving section 130 through the second oil guide section 142, so as to prevent the oil stains from falling between the second guide section 121 and the first guide section 111, and also to prevent the oil stains from dripping onto the outside of the lifting assembly 120 through the second guide section 121.

[0103] Among them, reference Figure 11 As shown, the tank 1423 of the second oil guiding part 142 can be configured to have overflow ports at both ends, so that oil drips from the overflow ports at both ends to the first oil receiving part 130. Alternatively, a guide port (not shown in the figure) can be opened on the surface of the second connecting part or the partition part, so that the guide port avoids the second guide part, that is, the oil dripping from the guide port will not drip onto the second guide part.

[0104] The longitudinal cross-sectional shape of the tank 1423 can be triangular, trapezoidal, rectangular, or semi-circular, etc., and the shape of the tank 1423 can be set according to actual needs. (Reference) Figures 9 to 11As shown, the longitudinal cross-sectional shape of the groove 1423 is triangular. The second connecting part 1421 can be connected to the second frame 122 of the lifting assembly 120 by means of welding, snap-fit, magnetic connection or fastener connection, etc. The first connecting part 1411 has various connection methods, which can be selected according to actual needs.

[0105] Understandably, reference Figure 11 As shown, the second oil guiding part 142 is a one-piece structure formed by bending. That is, the second connecting part 1421 and the partition part 1422 are integrally formed. The second oil guiding part 142 is bent to form the second connecting part 1421 and the partition part 1422. The one-piece structure can prevent oil leakage from the connection gap between the second connecting part 1421 and the partition part 1422, and ensure that the oil stains received by the second oil receiving part 140 fall accurately onto the first oil receiving part 130 through the fourth openings at both ends of the tank body 1423. Of course, the second connecting part and the partition part can also be independent components (not shown in the figure). The second connecting part and the partition part can be connected together by welding, snap-fit ​​magnetic connection or fastener connection.

[0106] It is understood that the length of the second oil guiding part 142 is greater than the width of the second guiding part 121, and at least one end of the tank 1423 in the length direction has an overflow port. The oil sludge collected in the tank 1423 can flow out through the overflow port at the end, and the oil sludge flowing out of the tank 1423 falls into the first oil receiving part 130. The structure of the second oil guiding part 142 is simple and easy to process.

[0107] The length of the second oil guiding portion 142 is greater than the width of the second guide portion 121 to prevent oil spillage from adhering to the surface of the second guide portion 121. Here, the length of the second oil guiding portion 142 and the width of the second guide portion 121 refer to the dimensions in the front-to-back direction.

[0108] refer to Figures 5 to 11 As shown, when the first guide portion 111 and the second guide portion 121 are located on the left and right sides, the second oil guide portion 142 is located on the left and right sides of the lifting assembly 120. Both ends of the second oil guide portion 142 in the length direction have a fourth opening. Both ends of the second oil guide portion 142 in the length direction form a second gap 160 with the inner wall of the fixed assembly 110 to ensure that the oil droplets dripping from the second oil guide portion 142 can fall into the first oil receiving portion 130 and ensure that the lifting assembly 120 can lift and lower stably.

[0109] The structure of the second oil guide 142 can also be: one end of the second oil guide in the length direction has an overflow port and the other end is closed (not shown in the figure). In this case, the second oil guide can be inclined downward from the closed end to the overflow port end to provide assistance for the flow of oil droplets.

[0110] Combination Figures 5 to 11As shown, the first oil guiding part 141 and the second oil guiding part 142 are connected to form a closed-loop structure surrounding the outer wall of the lifting assembly 120, so as to ensure that the second oil receiving part 140 can fully receive the oil dripping from above. The first oil guiding part 141 is provided on the front and rear sides of the lifting assembly 120, and the second oil guiding part 142 is provided on the left and right sides of the lifting assembly 120.

[0111] It should be noted that the structure of the second oil receiving part 140 is not limited to the structure in the above embodiment. Other structures capable of receiving oil dripping from the space above it are also possible. For example, referring to the structure of the first oil receiving part in the following embodiment, an oil guide groove (not shown in the figure) is defined, and the oil is guided to the first oil receiving part by providing an opening in the oil guide groove. Alternatively, the second oil receiving part may only include the first oil guide part, or the second oil receiving part may only include the second oil guide part. The specific structure of the second oil receiving part can be set according to actual needs.

[0112] Understandably, in combination Figures 7 to 10 as well as Figure 12 As shown, the first oil receiving part 130 is configured with a groove 132 surrounding the inner wall of the fixing component 110. The groove 132 is used to receive oil dripping from the second oil receiving part 140, oil dripping from the inner wall of the fixing component 110, and oil dripping from the second gap 160. The groove 132 surrounding the fixing component 110 avoids dead corners in the circumference of the fixing component 110.

[0113] The longitudinal cross-section of the groove 132 can be rectangular, triangular, trapezoidal or semi-circular, and can be set according to actual needs.

[0114] Understandably, reference Figures 7 to 10 as well as Figure 12 As shown, the first oil receiving part 130 is configured with a first opening 131 suitable for communicating with the first oil cup 230. Along the first opening 131, in a direction away from the first opening 131, the first oil receiving part 130 is inclined upward so that the oil in the first oil receiving part 130 flows to the first opening 131, and can also prevent the oil from accumulating in the first oil receiving part 130, thus playing a certain cleaning role for the first oil receiving part 130.

[0115] In some cases, the first opening 131 is connected to the first oil cup 230 of the flow guide assembly 200 to guide the oil in the first oil receiving part 130 into the first oil cup 230, so as to facilitate the user to centrally handle the oil.

[0116] Understandably, reference Figures 7 to 10 as well as Figure 12As shown, a first oil nozzle 133 is connected to the first opening 131. The first oil nozzle 133 extends out of the fixing component 110. The oil in the first oil receiving part 130 is discharged into the first oil cup 230 through the first oil nozzle 133. The structure is simple and easy to install.

[0117] Understandably, reference Figures 4 to 6 As shown, the lifting assembly 120 has an air inlet 1233 on its front side, and forms a first cavity 1234. A second oil cup 1235, communicating with the first cavity 1234, is connected to the bottom of the lifting assembly 120. Oil fumes enter the first cavity 1234 through the air inlet 1233, and then enter the second cavity 1132 of the fixing assembly 110 from the first cavity 1234. The fan assembly 400 draws the oil fumes out of the second cavity 1132 through the air outlet 1131. Oil dripping from the top plate of the fixing assembly 110 corresponding to the first cavity 1234 can fall directly into the second oil cup 1235, and oil condensation on the inner wall of the second enclosure 123 restricting the first cavity 1234 can also fall directly into the second oil cup 1235. The second oil cup 1235 is located at the bottom of the lifting assembly 120 and is easy to disassemble for cleaning and replacement.

[0118] Furthermore, the first oil receiving part 130 and the second oil receiving part 140 cooperate to prevent oil fumes from entering the second cavity 1132 through the gap between the fixed component 110 and the lifting component 120.

[0119] An embodiment of the second aspect of the present invention, in conjunction with Figures 1 to 20 As shown, a range hood is provided, including a frame assembly 300 and a lifting head assembly 100 as described in one or more of the above embodiments, with a fixing assembly 110 connected to the frame assembly 300. The lifting head assembly 100 has the beneficial effects of the above embodiments, therefore, a range hood equipped with the lifting head assembly 100 also has the aforementioned beneficial effects, as can be seen from the above description, and will not be repeated here.

[0120] The frame assembly 300 and the fixing assembly 110 can be fixed in a detachable manner, meaning that the frame assembly 300 and the lifting head assembly 100 are independent components, facilitating assembly and disassembly. This allows the lifting head assembly 100 to be adapted to various specifications of the frame assembly 300, enabling the fabrication of range hoods with different structural forms. The frame assembly 300 is equipped with decorative parts 310 to decorate the front of the range hood.

[0121] In the above embodiments, reference is made to Figure 13 and Figure 14The image shows a side view comparison of the lifting assembly 120 before and after lifting. The maximum lifting stroke of the lifting assembly 120 is 500mm. When the range hood is working, the lifting assembly 120 can be lifted within a range of 300mm-500mm to ensure that the air inlet 1233 remains outside the fixed assembly 110.

[0122] Understandably, reference Figure 4 As shown, a fan assembly 400 is provided inside the frame assembly 300. The second front wall plate 1133 of the fixed assembly 110 has an air outlet 1131 that communicates with the fan assembly 400. The flue gas in the second cavity 1132 of the fixed assembly 110 enters the third cavity 320 of the frame assembly 300 through the air outlet 1131 and is drawn out by the fan assembly 400.

[0123] Understandably, reference Figures 13 to 20 As shown, the range hood also includes a flow guiding component 200, which is installed on the front side of the fixed component 110 and located below the frame component 300. The front side of the fixed component 110 has an air outlet 1131, and a fan component 400 is installed inside the frame component 300. The air outlet 1131 is connected to the inlet of the fan component 400.

[0124] Under the suction of the fan assembly 400, some of the fumes generated during cooking enter the air inlet 1233 of the lifting assembly 120, then pass through the first chamber 1234, the second chamber 1132, and the air outlet 1131 before entering the fan assembly 400 and being discharged through it. Another portion of the fumes generated during cooking is gathered by the upper guide assembly 200 and drawn into the third chamber 320 of the frame assembly 300 by the fan assembly 400, before being discharged through it. The fan assembly 400 provides power so that the fumes can be discharged through both the lifting head assembly 100 and the guide assembly 200.

[0125] Understandably, reference Figures 16 to 20 As shown, the flow guiding assembly 200 includes a first oil cup 230, and a first oil receiving part 130 is connected to the first oil cup 230. The oil collected by the lifting head assembly 100 is guided into the first oil cup 230. The oil collected by the first oil receiving part 130 and the second oil receiving part 140 is collected by the first oil cup 230, which has a simple structure and is easy to clean.

[0126] Compared to the method of setting oil cups inside the lifting head assembly 100, the oil circuit problem inside the lifting head assembly 100 and the frame assembly 300 is solved.

[0127] Understandably, reference Figures 17 to 20As shown, the flow guiding assembly 200 includes a first flow guiding member 210 with a first through hole 213. A first oil cup 230 is connected to the lower part of the first flow guiding member 210. The first oil cup 230 can be used to collect oil condensation on the lower surface of the first oil guiding member. By opening a through hole in the first flow guiding member 210, the first oil cup 230 can also be used to collect oil condensation on the upper part of the first flow guiding member 210.

[0128] refer to Figure 5 and Figure 6 As shown, when the first oil receiving part 130 is connected to the first oil nozzle 133, the first oil nozzle 133 is connected above the first guide member 210. The first oil nozzle 133 has a second through hole 1331, which communicates with the first oil cup 230 through the first through hole 213. The oil in the first oil receiving part 130 is guided into the first oil cup 230 through the first oil nozzle 133 for centralized collection and easy cleaning.

[0129] Combination Figures 17 to 20 As shown, the flow guiding assembly 200 also includes a frame 220, the first flow guiding member 210 is connected to the frame 220, and the frame 220 surrounds the first flow guiding member 210 so that the first flow guiding member 210 is surrounded by the frame 220, thereby preventing the first flow guiding member 210 from extending out of the frame 220 and affecting the appearance of the range hood.

[0130] The first oil cup 230 is also enclosed within the frame 220, meaning the frame 220 hides the first oil cup 230. The shape of the frame 220 is the external shape of the flow guide component 200. By changing the shape of the frame 220, flow guide components 200 of different shapes can be formed, making it convenient to produce and process flow guide components 200 of various shapes, thereby forming range hoods of various shapes.

[0131] Understandably, in combination Figures 17 to 20 As shown, the flow guiding assembly 200 also includes a second flow guiding member 240 located above the first flow guiding member 210. The second flow guiding member 240 extends along the top of the frame 220 to the first flow guiding member 210 and covers the outside of the air inlet portion of the first flow guiding member 210. The second flow guiding member 240 surrounds and guides the flue gas flowing upward through the air inlet portion to the third cavity 320 of the rack assembly 300. The second flow guiding member 240 also prevents the flue gas from escaping above the first flow guiding member 210 to the frame 220 or the outside of the frame 220, ensuring that the flue gas smoothly enters the rack assembly 300 and is discharged.

[0132] Meanwhile, the oil condensation on the inner wall of the rack assembly 300 can be guided downward through the inner wall of the second guide 240 to collect the oil dripping from the rack assembly 300, and also to prevent the oil from dripping directly onto the upper surface of the first guide 210 and splashing.

[0133] Understandably, reference Figures 17 to 20 As shown, a second opening 241 is provided on the rear side of the second guide member 240. The second opening 241 is connected to the first through hole 213. Oil stains attached to the surface of the second guide member 240 can flow into the first oil cup 230 through the second opening 241 and the first through hole 213, so that the first oil cup 230 can collect the oil stains in a concentrated manner.

[0134] Understandably, a second oil nozzle 250 is connected to the second opening 241. The second oil nozzle 250 is connected to the first guide member 210, and the second oil nozzle 250 has a third through hole 253 that communicates with the first through hole 213. The oil contaminants in the second guide member 240 are guided to the first oil cup 230 through the second oil nozzle 250. The second oil nozzle 250 serves as a guide, directing and limiting the flow of oil contaminants from the second guide member 240 to the first oil cup 230.

[0135] Understandably, reference Figures 17 to 20 As shown, the second oil nozzle 250 includes a first protrusion 251 that restricts the third through hole 253. The first protrusion 251 passes through the first through hole 213 and extends downward. The first protrusion 251 guides the oil sludge received by the second oil nozzle 250 into the first oil cup 230, which can prevent overflow between the surface of the second oil nozzle 250 and the first guide member 210.

[0136] Understandably, reference Figures 17 to 20 As shown, the second nozzle 250 includes a second protrusion 252 that restricts the fourth through hole 254. The second protrusion 252 protrudes upward, and the second nozzle 250 is fixed to the first guide member 210 by a fastener passing through the fourth through hole 254. The second nozzle 250 is installed with the first guide member 210 by the fastener, and the upward protrusion of the second protrusion 252 prevents oil from entering the gap between the fastener, the second nozzle 250, and the first guide member 210.

[0137] It should be noted that the structure of the first nozzle 133 is the same as that of the second nozzle 250.

[0138] In summary, the condensed oil on the top of the frame assembly 300 and the condensed oil from the fan system flow into the first oil cup 230 through the second guide 240 and the second oil nozzle 250; the condensed oil from the lifting assembly 120 and the corresponding space directly above it flows into the second oil cup 1235; and the oil from other parts of the fixing assembly 110 flows into the first oil cup 230. Specifically, the condensed oil on the inner wall of the first enclosure 113 of the fixing assembly 110 flows into the first oil cup 230 through the first oil receiving part 130. The first enclosure 113 of the fixing assembly 110 and the second enclosure of the lifting assembly 120... There will be condensed oil in the installation gap between 123 (part of which falls through the gap inside the first enclosure 113, and part of which is oil fumes that enter through the gap and form condensed oil on the wall). This part of the condensed oil flows into the first oil receiving part 130 after passing through the second oil receiving part 140. The oil in the first oil receiving part 130 then flows into the first oil cup 230. The aforementioned structure solves the oil circuit problem of each module in the lifting process, so that users can avoid oil dripping during use. It can also significantly reduce the condensed oil on the outer wall of the lifting component 120, making the overall appearance of the machine cleaner.

[0139] In addition, by staggering the first oil receiving part 130 and the second oil receiving part 140, the air volume entering the gap between the fixed component 110 and the lifting component 120 can be greatly reduced, and the condensed oil in this gap can also be reduced.

[0140] Understandably, reference Figures 18 to 20 As shown, the first guide member 210 includes a guide portion 211 and an oil collection portion 212 located behind the guide portion 211. The guide portion 211 is inclined downward in a front-to-back direction to guide the oil to the oil collection portion 212. The oil collection portion 212 is bent horizontally relative to the guide portion 211. The oil collection portion 212 has a first through hole 213. The lower part of the oil collection portion 212 is connected to a first oil cup 230. The oil in the oil collection portion 212 enters the first oil cup 230 through the first through hole 213.

[0141] The first guide member 210 also includes a smoke collection part 214, which is located in front of the guide member 211. The smoke collection part 214 extends upward from the bottom of the frame 220, so that the first guide member 210 can gather the smoke between the first guide member 210 and the frame 220.

[0142] Some of the first through holes 213 are connected to the second through hole 1331 of the first grease nipple 133, and some of the first through holes 213 are connected to the third through hole 253 of the second grease nipple 250.

[0143] Understandably, when the flow guiding assembly 200 also includes a second flow guiding member 240 located above the first flow guiding member 210, the second flow guiding member 240 overlaps with the flow guiding portion 211. The second flow guiding member 240 is fixedly connected to the bottom of the frame assembly 300, and the second flow guiding member 240 is easy to install and disassemble.

[0144] The front wall surface 242 and the rear wall surface 243 of the second guide member 240 are both converging towards the guide portion 211 to guide the oil to the guide portion 211 and allow the oil to flow along the guide portion 211 towards the oil collection portion 212.

[0145] The condensed oil on the inner wall of the frame assembly 300 and the condensed oil on the side wall of the fan assembly 400 are collected and guided by the second guide member 240 to the upper wall of the first guide member 210, and then guided by the upper wall of the inclined guide part 211 to the second oil nozzle 250 above the oil collection part 212. After being guided by the second oil nozzle 250, it flows into the first oil cup 230.

[0146] Understandably, the front wall surface 242 of the inner side of the second guide member 240 is inclined backward in the downward direction. The rearward inclination of the front wall surface 242 is to guide the oil on the inner wall surface of the second guide member 240 backward, which helps the oil to enter the first oil cup 230 behind the first guide member 210.

[0147] Understandably, a panel 260 is installed at the front of the frame 220 for user convenience; a cover plate 270 is installed on the top of the frame 220, which is used to cover the space outside the second guide member 240 and above the first guide member 210. The first guide member 210 has an installation port 2111, and an oil mesh 280 is installed at the installation port 2111 so that the oil fumes can flow upward through the oil mesh 280.

[0148] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A lifting head assembly, characterized in that, include: Fixed components; Lifting assembly; A drive assembly includes a drive component and a moving component, the drive component being connected to the fixed assembly, the drive component being dynamically coupled to the moving component to drive the moving component to move up and down, and the moving component being connected to the lifting assembly; An oil-resistant structure is connected to the lifting assembly and surrounds the moving part; The fixing component is connected to a first oil receiving part; a first gap is provided between the lifting component and the first oil receiving part; the lifting component is connected to a second oil receiving part located above the first oil receiving part; a second gap is provided between the second oil receiving part and the fixing component; the first gap and the second gap are offset from each other in the orthographic projection on the horizontal plane. The first oil receiving part and the second oil receiving part have an intersection area when projected onto the horizontal plane. The intersection area forms an annular area between the fixed component and the lifting component.

2. The lifting head assembly according to claim 1, characterized in that, The oil-proof structure includes a first oil-proof plate and a second oil-proof plate. The lifting assembly includes a first front wall plate and a first rear wall plate. The first front wall plate has a first oil-proof part, and the first rear wall plate has a second oil-proof part. The first oil-proof part, the second oil-proof part, the first oil-proof plate, and the second oil-proof plate are connected to form a closed-loop structure to surround the side wall of the moving part.

3. The lifting head assembly according to claim 2, characterized in that, The first front wall panel is provided with an air inlet, which is distributed on both sides of the first oil-proof part.

4. The lifting head assembly according to claim 1, characterized in that, The fixing component is provided with a first guide portion, and the lifting component is provided with a second guide portion adapted to the first guide portion. The first guide portion and the second guide portion are adapted to move relative to each other along the lifting direction of the lifting component.

5. The lifting head assembly according to claim 4, characterized in that, The first guide portion is provided on two opposite sides of the fixed component, and the first guide portion extends along the height direction of the fixed component. The second guide portion is provided on two opposite sides of the lifting component, and the second guide portion is located on the upper part of the lifting component and is hidden inside the fixed component.

6. The lifting head assembly according to claim 1, characterized in that, The fixing component includes a first frame and a first enclosure plate installed on the outside of the first frame, and the lifting component includes a second frame and a second enclosure plate installed on the outside of the second frame, with the first frame sleeved on the outside of the second enclosure plate.

7. The lifting head assembly according to claim 6, characterized in that, The first frame and at least one of the second frames are assembled using aluminum profiles.

8. The lifting head assembly according to any one of claims 1 to 7, characterized in that, The drive assembly further includes a fixing member sleeved on the outside of the movable member, the fixing member being connected to the fixing assembly, and the movable member moving up and down along the extension direction of the fixing member.

9. The lifting head assembly according to any one of claims 1 to 7, characterized in that, The drive assembly further includes a protective member disposed on the outside of the drive member, and the fixing assembly includes a top plate, a second front wall plate, and a second rear wall plate, wherein the protective member, the second front wall plate, the second rear wall plate, and the top plate surround the drive member.

10. A range hood, characterized in that, It includes a frame assembly and a lifting head assembly as described in any one of claims 1 to 9, wherein the fixing assembly is connected to the frame assembly.

11. The range hood according to claim 10, characterized in that, The frame assembly contains a fan assembly, and the second front wall panel of the fixed assembly has an air outlet that communicates with the fan assembly.

12. The range hood according to claim 10, characterized in that, The lower end of the rack assembly is connected to a flow guide assembly, which is installed on the front side of the fixing assembly.

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