Range hood

Abstract

The utility model discloses a kind of range hood. Range hood includes: cabinet, fan assembly is equipped in cabinet;Smoke collecting cavity, smoke collecting cavity is connected with cabinet, smoke collecting cavity is opened with the opening downwards smoke collecting cavity, smoke collecting cavity includes the rear plate and smoke collecting plate that enclose smoke collecting cavity, smoke collecting plate is set down from the direction of rear side to front side of smoke collecting cavity, smoke collecting plate is opened with smoke hole;Oil containing space, oil containing space is used to accommodate the condensate oil of the rear end surface of smoke collecting plate to prevent condensate oil from dropping on rear plate. In the above-mentioned range hood, range hood includes oil containing space, oil containing space is used to accommodate the condensate oil of the rear end surface of smoke collecting plate to prevent condensate oil from dropping on rear plate, so that condensate oil can be avoided to a certain extent due to gathering in the bottom of rear plate and cause drop, and then the cleaning burden of user can be reduced, and user experience is improved.

Description

Technical Field

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

[0002] In related technologies, to meet the aesthetic requirements of kitchen spaces, range hoods can be concealed within cabinets. However, because the range hood is completely hidden within the cabinet, its thickness needs to be controlled within the depth of the cabinet (e.g., within 320 mm). This causes the air intake path of the range hood to be further back, resulting in oil easily accumulating at the bottom of the back panel and dripping onto the cooktop, creating a cleaning burden for users and affecting the user experience. Utility Model Content

[0003] This utility model provides a range hood to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides a range hood. The range hood includes:

[0005] The housing contains a fan assembly;

[0006] A smoke collection chamber is connected to the box body. The smoke collection chamber has a downward-facing smoke collection cavity. The smoke collection chamber includes a rear plate and a smoke extraction plate that surround the smoke collection cavity. The smoke extraction plate is inclined downward from the rear side to the front side of the smoke collection chamber. The smoke extraction plate has smoke extraction holes.

[0007] An oil-containing space is provided to contain condensed oil on the rear end face of the smoke plate to prevent the condensed oil from dripping onto the rear plate.

[0008] In the aforementioned range hood, the oil-containing space is used to hold the condensed oil on the rear end of the smoke extraction plate to prevent the condensed oil from dripping onto the rear plate. This can, to a certain extent, avoid dripping caused by the accumulation of condensed oil at the bottom of the rear plate, thereby reducing the cleaning burden on users and improving the user experience.

[0009] In some embodiments, the top wall of the smoke collection chamber is provided with an installation through hole, the smoke-collecting plate is disposed in the installation through hole, and the rear end face of the smoke-collecting plate and the side wall face of the installation through hole are spaced apart to form the oil-containing space between the rear end of the smoke-collecting plate and the side wall of the installation through hole.

[0010] In some embodiments, the smoke plate includes a smoke section and a bent section, the smoke section having the smoke hole, the bent section being connected to the rear end of the smoke section, the bent section extending away from the smoke section and away from the opening, and the rear end face of the smoke plate including the surface of the bent section facing the inner wall of the mounting through hole.

[0011] In some embodiments, the range hood includes a boss that protrudes from at least one of the rear end face of the smoke extraction plate and the inner wall surface of the mounting through hole, the boss being used to define the width of the oil-containing space.

[0012] In some embodiments, the boss includes a first boss that is symmetrical about the central axis of the range hood, and / or;

[0013] The protrusion includes a plurality of second protrusions, which are symmetrically distributed along the central axis of the range hood.

[0014] In some embodiments, the height of the protrusion of the boss is L1, where 0.5 mm ≤ L1 ≤ 3 mm, and / or;

[0015] In the left-right direction of the range hood, the length of the boss is L2, where L2 ≤ 20 mm.

[0016] In some embodiments, the smoking plate is detachably mounted to the mounting through hole.

[0017] In some embodiments, the smoking plate is detachably mounted to the mounting through hole by magnetic attraction.

[0018] In some embodiments, the range hood includes an oil cup disposed on the surface of the front plate of the smoke collection chamber facing the smoke collection chamber and located below the front end of the smoke extraction plate.

[0019] In some embodiments, the range hood further includes a flow guiding structure disposed on the smoke extraction plate, the flow guiding structure being used to guide the condensed oil on the rear end of the smoke extraction plate to flow towards the front end of the smoke extraction plate to prevent the condensed oil from dripping onto the rear plate.

[0020] In some embodiments, the drainage structure is used to guide the condensed oil to the smoke plate portion surrounding the smoke hole.

[0021] In some embodiments, in the forward direction of the range hood, the projection of the drainage structure and the smoke inlet onto the front panel of the smoke collection cavity do not coincide.

[0022] In some embodiments, the smoking plate includes a rear end face and a lower end face that are connected to each other, and the drainage structure is disposed at at least a portion of the connection formed by the connection between the rear end face and the lower end face.

[0023] In some embodiments, the drainage structure is provided with a drainage groove, the sidewall of which is connected to the rear end face and the lower end face.

[0024] In some embodiments, the drainage channel has a first opening formed on the rear end face, and the first opening is gradually widening in the direction away from the upper end of the smoking plate;

[0025] The drainage channel has a second opening formed on its lower end surface, and the second opening tapers in a direction away from the rear end of the smoking plate.

[0026] In some embodiments, the drainage channel is surrounded by a rib structure, which is formed by the connection between the rear end face and the lower end face being recessed towards the front and top of the range hood.

[0027] In some embodiments, the rib structure satisfies at least one of the following:

[0028] The length of the rib structure is L3, where L3 ≥ 3 mm;

[0029] The width of the rib structure is L4, and L4 ≥ 3 mm;

[0030] The depth of the rib structure is L5, where L5 ≥ 3 mm.

[0031] In some embodiments, the smoke extraction plate has a plurality of smoke extraction holes, which are spaced apart along the left and right direction of the range hood. In the direction of the front and rear ends of the smoke extraction plate, the smoke extraction holes form an air intake channel. The number of the air intake structure is N1, the number of the air intake channel is N2, and N1 / N2≥1 / 5.

[0032] In some embodiments, the surface of the rear plate facing the smoke collection chamber is provided with a ribbed structure, which is used to change the distribution of condensed oil on the surface of the rear plate facing the smoke collection chamber to prevent the condensed oil from accumulating at the bottom of the rear plate.

[0033] In some embodiments, in the left-right direction of the range hood, the minimum length of the ribbed structure is L6, and the length of the rear plate is L7, where 0.6 ≤ L6 / L7 ≤ 0.9.

[0034] In some embodiments, the thickness of the rib structure is L8 in a direction perpendicular to the surface of the rear plate, where L8 ≥ 0.8 mm.

[0035] In some embodiments, the ribbed structure includes ribs that protrude from the surface of the rear plate facing the smoke collection chamber, the ribs being used to guide the flow direction of the condensed oil to change the distribution of the condensed oil on the surface of the rear plate facing the smoke collection chamber.

[0036] In some embodiments, the rib includes a first rib portion that is inclined relative to the horizontal plane.

[0037] In some embodiments, the ribs include a plurality of first rib portions spaced apart in the vertical direction of the range hood, wherein the first rib portions have a symmetrical structure along the central axis of the rear plate.

[0038] In some embodiments, the rib includes a plurality of second rib portions disposed at an angle relative to the horizontal plane, the second rib portions being connected to one end of two adjacent first rib portions.

[0039] In some embodiments, the ribbed structure is provided with grooves for accommodating condensed oil to alter the distribution of the condensed oil on the surface of the rear plate facing the smoke collection chamber.

[0040] In some embodiments, the groove includes a first groove portion extending in a horizontal direction.

[0041] In some embodiments, the groove includes a plurality of first groove portions spaced apart in the vertical direction of the range hood, wherein the first groove portions are groove portions symmetrical along the central axis of the rear plate.

[0042] In some embodiments, the groove includes a plurality of second groove portions extending in a vertical direction, the second groove portions being connected to one end of two adjacent first groove portions.

[0043] In some embodiments, the groove opening width is L9, where 2 mm ≤ L9 ≤ 10 mm.

[0044] In some embodiments, the ribbed structure and the rear plate are integrally formed.

[0045] 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

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0047] Figure 1 and Figure 2 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model;

[0048] Figure 3This is a cross-sectional schematic diagram of the range hood according to an embodiment of the present utility model;

[0049] Figure 4 for Figure 3 An enlarged view of part A of the range hood;

[0050] Figure 5 and Figure 6 This is a schematic diagram of the structure of the smoking board according to an embodiment of the present utility model;

[0051] Figures 7 to 9 This is another structural schematic diagram of the smoking board according to an embodiment of the present utility model;

[0052] Figure 10 for Figure 9 Enlarged view of part B of the smoking board;

[0053] Figure 11 and Figure 12 This is a front view of the rear plate according to an embodiment of the present utility model;

[0054] Figure 13 and Figure 14 This is a left view of the rear panel of an embodiment of the present invention.

[0055] Explanation of key component reference numerals:

[0056] Range hood 1000, housing 100, smoke collection chamber 200, oil cup 300, check valve 400, air outlet device 500, fan assembly 600, oil holding space 700, boss 800, smoke collection chamber 201, rear plate 202, smoke extraction plate 203, ribbed structure 204, front plate 205, left plate 206, right plate 207, first side plate 208, drainage structure 209, inner smoke extraction plate 210, mounting through hole 211, first boss 801, second boss 802. 02, rear end face 203a, lower end face 203b, smoke hole 2031, operation hole 2032, smoke part 2033, bending part 2034, air intake channel 2035, rib 2041, groove 2042, flow channel 2091, rib structure 2092, first rib part 2041a, second rib part 2041b, first groove part 2042a, second groove part 2042b, first slot 2091a, second slot 2091b. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0058] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0062] Please refer to Figures 1 to 4 This utility model provides a range hood 1000. The range hood 1000 includes a housing 100, a smoke collection chamber 200, and an oil-containing space 700. A fan assembly 600 is installed inside the housing 100. The smoke collection chamber 200 is connected to the housing 100 and has a downward-opening smoke collection cavity 201. The smoke collection chamber 200 includes a rear plate 202 and a smoke extraction plate 203 surrounding the smoke collection cavity 201. The smoke extraction plate 203 is inclined downwards from the rear to the front of the smoke collection chamber 200 and has smoke extraction holes 2031. The oil-containing space 700 is used to collect condensed oil from the rear end face 203a of the smoke extraction plate 203 to prevent condensed oil from dripping onto the rear plate 202.

[0063] In the aforementioned range hood 1000, the range hood 1000 includes an oil-containing space 700, which is used to contain the condensed oil on the rear end face 203a of the smoke extraction plate 203 to prevent the condensed oil from dripping onto the rear plate 202. This can, to a certain extent, prevent the condensed oil from accumulating at the bottom of the rear plate 202 and dripping, thereby reducing the cleaning burden on users and improving the user experience.

[0064] Specifically, please combine Figure 1 and Figure 2 The range hood 1000 has vertical, horizontal, and front-to-back orientations; the front orientation is the direction the range hood faces after installation. The range hood 1000 can be installed above the cooking area to absorb and remove cooking fumes, maintaining a clean and comfortable kitchen environment. Please refer to... Figure 1 and Figure 2 The range hood 1000 includes a housing 100 and a smoke collection chamber 200. A fan assembly 600 is installed inside the housing 100. The smoke collection chamber 200 is located below the housing 100 and can be fixedly connected to the lower end of the housing 100 by means of screws or welding. The smoke collection chamber 200 has a smoke collection cavity 201 with an opening at the lower end.

[0065] The smoke collection chamber 200 includes a smoke extraction plate 203 and a rear plate 202. The smoke extraction plate 203 has smoke extraction holes 2031. The smoke extraction plate 203 and the rear plate 202 form a part of the smoke collection chamber 201. The smoke extraction plate 203 is inclined downwards from the rear side to the front side of the smoke collection chamber 200, allowing condensed oil on the smoke extraction plate 203 to flow obliquely downwards from back to front. The smoke collection chamber 201 can be used to collect and guide oil fumes. In one embodiment, the inner surface of the rear plate 202 forms the rear wall of the smoke collection chamber 201, and the inner surface of the smoke extraction plate 203 at least forms a part of the top wall of the smoke collection chamber 201. The inner surface refers to the surface of the plate facing the smoke collection chamber 201.

[0066] During the operation of the range hood 1000, cooking fumes are drawn into the smoke collection chamber 201 by the fan assembly 600, and further enter the fan assembly 600 through the smoke holes 2031 on the smoke extraction plate 203, and are then discharged from the kitchen by the fan assembly 600. As the fumes pass through the smoke extraction plate 203, larger oil droplets and some grease in the fumes are separated by the baffle effect of the smoke extraction. The range hood 1000 includes an oil cup 300, which is disposed on the surface of the front plate 205 of the smoke collection chamber 200 facing the smoke collection chamber 201. The smoke extraction plate 203 is inclined downwards from the rear to the front of the smoke collection chamber 200, and the oil cup 300 is disposed on the surface of the front plate 205 of the smoke collection chamber 200 facing the smoke collection chamber 201 to form a reverse-cavity range hood 1000. The grease separated from the smoke extraction plate 203 and the oil condensed on the smoke extraction plate 203 can be collected in the oil cup 300, thereby reducing the grease content entering the fan assembly 600, extending the service life of the range hood 1000 and facilitating subsequent cleaning and maintenance.

[0067] It is understandable that, since the smoke extraction plate 203 is inclined downwards from the rear to the front of the smoke collection chamber 200, when the range hood 1000 is installed, the angle between the side of the smoke extraction plate 203 facing the opening and the wall where the range hood 1000 is located is an acute angle. This arrangement optimizes the pressure radiation direction of the range hood 1000, increases the negative pressure area, and improves the smoke extraction effect. Furthermore, the grease and oil separated by the smoke extraction plate 203 will flow to the front end of the smoke extraction plate 203 under the influence of gravity. The oil cup 300 can be located below the front end of the smoke extraction plate 203 to collect the dripping grease, allowing users to more easily disassemble and install the oil cup 300, thus improving the user experience. Optionally, the vertical cross-section of the space formed by the smoke extraction plate 203 and the wall where the range hood 1000 is located in the front-back direction is approximately triangular.

[0068] Optionally, in the installed state, the rear surfaces of the housing 100 and the smoke collection chamber 200 of the range hood 1000 are vertically arranged to fit against or be close to the wall, while the front side of the housing 1000 is away from the wall and close to the user. After installation, the housing 1000 and the smoke collection chamber 200 can be housed in a cabinet, making the kitchen more tidy.

[0069] In one embodiment, the range hood 1000 includes a check valve 400, which is connected to the air outlet and the exhaust pipe of the housing 100 respectively, and is used to realize the one-way exhaust function.

[0070] In one embodiment, the smoke collection chamber 200 further includes a front plate 205, a left plate 206, and a right plate 207, which together form the smoke collection chamber 201. In one embodiment, the inner surface of the oil cup 200 forms the front wall of the smoke collection chamber 201, the inner surface of the left plate 206 forms the left wall of the smoke collection chamber 201, and the inner surface of the right plate 207 forms the right wall of the smoke collection chamber 201.

[0071] In one embodiment, the smoke collection cavity 200 includes a first side plate 208, which is closer to the rear side of the smoke collection cavity 200 than the rear plate 202. The lower end of the rear plate 202 is connected to the lower end of the first side plate 208, and the rear plate 202 extends from the lower end of the first side plate 208 toward the front and top of the range hood 1000.

[0072] In one embodiment, the range hood 1000 includes an exhaust device 500 disposed on the left and / or right side of the smoke collection chamber 201, which is used to promote the movement of smoke towards the rear side, thereby reducing the risk of smoke escaping from the front side of the range hood 1000.

[0073] In related technologies, to meet the demands of integrated and streamlined kitchen design, range hoods are often designed to be completely concealed within cabinets, achieving a seamless and aesthetically pleasing integration with the cabinetry. These range hoods are typically referred to as fully concealed or fully integrated range hoods. Since cabinet depth is generally limited, the overall thickness of the range hood must be controlled within the cabinet depth, for example, within 320 mm, to ensure proper integration. However, when the overall thickness is limited, the internal air duct design and air inlet position are also affected, often requiring the air intake path of a fully concealed range hood to be positioned closer to the rear of the unit. During cooking, the large amount of fumes produced are drawn into the unit and condense upon contact with the cooler metal back panel, forming oil droplets. These droplets gradually converge downwards under gravity and drip onto the cooktop, increasing the cleaning burden and negatively impacting the user experience.

[0074] In this embodiment of the invention, the range hood 1000 includes an oil-containing space 700, which is used to contain condensed oil on the rear end face 203a of the smoke extraction plate 203 to prevent it from dripping onto the rear plate 202. Specifically, during cooking, when fumes enter the smoke collection chamber 201 and come into contact with the rear end face of the smoke extraction plate, condensed oil is formed. Therefore, with the presence of the oil-containing space 700, the condensed oil will not drip directly onto the rear plate 202 under gravity, causing it to slide rapidly down the surface of the rear plate 202 to the bottom. Instead, it is intercepted and stored by the oil-containing space 700, effectively preventing the condensed oil from accumulating and dripping at the bottom of the rear plate 202. This reduces the risk of condensed oil dripping onto the stovetop, improves the user's cleaning experience, and enhances the comfort of using the range hood 1000.

[0075] Optionally, in one embodiment, an oil-containing component can be provided on the inner surface of the rear plate 202. The oil-containing component may have an oil-containing space 700, which may be located below the rear end of the smoke extraction plate 203. In another embodiment, an oil-containing component can be provided on the smoke extraction plate 203. The oil-containing component may have an oil-containing space 700, which may be located below the rear end of the smoke extraction plate 203.

[0076] In some implementations, please refer to Figure 3 and Figure 4 The top wall of the smoke collection chamber 201 is provided with an installation through hole 211. The smoke extraction plate 203 is disposed in the installation through hole 211. The rear end face 203a of the smoke extraction plate 203 and the side wall face of the installation through hole 211 are spaced apart to form an oil-accommodating space 700 between the rear end of the smoke extraction plate 203 and the side wall of the installation through hole 211.

[0077] In the above embodiments, an oil-containing space 700 can be formed without increasing the number of parts, thereby reducing costs.

[0078] Specifically, the top wall of the smoke collection chamber 201 is provided with an installation through hole 211. The size of the installation through hole 211 is larger than the size of the smoke extraction plate 203 in the front-back direction, so that after the smoke extraction plate 203 is placed in the installation through hole 211, the rear end face 203a of the smoke extraction plate 203 and the side wall face of the installation through hole 211 can be spaced apart, thereby forming an oil-accommodating space 700 between the rear end of the smoke extraction plate 203 and the side wall of the installation through hole 211.

[0079] When the fumes come into contact with the rear end of the smoke extraction plate 203 and condense to form condensed oil, the condensed oil can collect and be stored in the oil-containing space 700. This can, to a certain extent, prevent the oil from dripping directly along the edge of the smoke extraction plate 203 onto the surface of the rear plate 202 and further collecting and dripping onto the stove area at the bottom of the rear plate 202.

[0080] In some implementations, please refer to Figures 3 to 6The smoking plate 203 includes a smoking part 2033 and a bending part 2034. The smoking part 2033 has a smoking hole 2031. The bending part 2034 is connected to the rear end of the smoking part 2033 and is located on the side of the smoking part 2033 away from the opening. The rear end face 203a of the smoking plate 203 includes the surface of the bending part 2034 facing the inner wall of the mounting through hole 211.

[0081] In the above embodiments, the bending portion 2034 can increase the volume of the oil-containing space 700, thereby improving the oil-containing effect of the oil-containing space 700.

[0082] Specifically, the bent portion 2034 extends away from the opening of the smoking portion 2033. Optionally, in one embodiment, the bent portion 2034 and the smoking portion 2033 can be connected by welding or riveting. In one embodiment, the bent portion 2034 and the smoking portion 2033 can be an integrally formed structure, and the bent portion 2034 can be formed in one step by stamping and bending a metal sheet.

[0083] The rear end face 203a of the smoking plate 203 includes a bent portion 2034 facing the inner wall of the mounting through hole 211. That is, the bent portion 2034 facing the inner wall of the mounting through hole 211 and the inner wall of the mounting through hole 211 form at least a part of the oil-containing space 700, thereby providing a larger oil-containing space 700.

[0084] Optionally, the connection between the bend 2034 and the smoke extraction part 2033 is rounded to avoid sharp corners at the bend, which could lead to the accumulation of condensed oil at that location.

[0085] In some implementations, please refer to Figures 3 to 6 The range hood 1000 includes a boss 800, which protrudes from at least one of the rear end face 203a of the smoke extraction plate 203 and the inner wall of the mounting through hole 211. The boss 800 is used to define the width of the oil-containing space 700.

[0086] In the above embodiments, the boss 800 can effectively limit the gap between the rear end face 203a of the smoking plate 203 and the inner wall of the mounting through hole 211, thereby ensuring that the width of the oil-containing space 700 is stable and controllable to a certain extent.

[0087] Specifically, the width W of the oil-containing space 700 refers to the dimension of the oil-containing space 700 in the front-to-rear direction of the smoke plate 203. A boss 800 protrudes from at least one of the rear end face 203a of the smoke plate 203 and the inner wall surface of the mounting through hole 211, thereby defining the width of the oil-containing space 700. Optionally, in one embodiment, the boss 800 protrudes from the rear end face 203a of the smoke plate 203. In one embodiment, the boss 800 protrudes from the inner wall surface of the mounting through hole 211. In one embodiment, one or more bosses 800 protrude from the rear end face 203a of the smoke plate 203, and one or more bosses 800 protrude from the inner wall surface of the mounting through hole 211.

[0088] Optionally, in one embodiment, the boss 800 protruding from the rear end face 203a of the smoke extraction plate 203 and the boss 800 protruding from the inner wall of the mounting through hole 211 can abut against each other, thereby jointly defining the width of the oil-containing space 700. In one embodiment, the boss 800 protruding from the rear end face 203a of the smoke extraction plate 203 can abut against the inner wall of the mounting through hole 211, and the boss 800 protruding from the inner wall of the mounting through hole 211 can abut against the rear end face 203a of the smoke extraction plate 203, thereby jointly defining the width of the oil-containing space 700.

[0089] It is understandable that the boss 800 can provide support or limit the distance between the rear end face 203a of the smoke plate 203 and the inner wall of the mounting through hole 211 by its protruding height. When the smoke plate 203 is assembled into the mounting through hole 211, the height of the boss 800 corresponds to the interval size of the oil holding space 700, thereby making it convenient to limit the width of the oil holding space 700.

[0090] In some implementations, please refer to Figure 5 and Figure 6 The boss 800 includes a first boss 801, which is a structure symmetrical about the central axis P of the range hood 1000, and / or;

[0091] The boss 800 includes a plurality of second bosses 802, which are symmetrically distributed along the central axis P of the range hood 1000.

[0092] In the above embodiments, the installation stability of the smoke extraction plate 203 is improved.

[0093] Specifically, the first boss 801 is a symmetrical structure along the central axis P of the range hood 1000, and multiple second bosses 802 are symmetrically distributed along the central axis P of the range hood 1000. This can, to a certain extent, prevent the smoke plate 203 from tilting or shifting when it is assembled into the mounting through hole 211, thereby improving the stability of the smoke plate 203. At the same time, it keeps the width of the oil-containing space 700 uniform in the left and right directions, thereby improving the condensate oil collection effect.

[0094] Optionally, in one embodiment, the boss 800 includes a first boss 801 and a plurality of second bosses 802. The first boss 801 is located at the middle position of the rear end face 203a of the smoke extraction plate 203 or the inner wall surface of the mounting through hole 211, and the second bosses 802 are located on the left and right sides of the first boss 801. In one embodiment, the boss 800 includes a plurality of second bosses 802. The plurality of second bosses 802 are symmetrically distributed along the central axis P of the range hood 1000.

[0095] In some implementations, please refer to Figure 5 The height of the protrusion of boss 800 is L1, 0.5 mm ≤ L1 ≤ 3 mm, and / or;

[0096] In the left-right direction of the range hood 1000, the length of the boss 800 is L2, where 0 mm < L2 ≤ 20 mm.

[0097] In the above embodiments, the oil capacity of the oil-containing space 700 can be increased while reducing the processing difficulty.

[0098] Specifically, the length of the boss 800 refers to its dimension in the left-right direction of the range hood 1000. It can be understood that the height of the boss 800 is a determining factor in the width of the oil-holding space 700. The greater the height of the boss 800, the wider the oil-holding space 700; the smaller the height of the boss 800, the narrower the oil-holding space 700.

[0099] The height L1 of the protrusion of the boss 800 satisfies 0.5 mm ≤ L1 ≤ 3 mm. On the one hand, it can improve the oil holding capacity of the oil holding space 700, thereby more effectively preventing condensed oil from dripping onto the back plate 202. On the other hand, it can avoid L1 being too large to a certain extent, which would place higher requirements on the structural strength and processing of the smoke plate 203.

[0100] The length L2 of the boss 800 satisfies L2≤20 mm. On the one hand, it can effectively limit the width of the oil-containing space 700, and on the other hand, it can prevent the boss 800 from occupying too much of the oil-containing space 700, which would reduce the oil-containing capacity of the oil-containing space 700.

[0101] Alternatively, the boss 800 can be integrally formed during the stamping process of the smoking plate 203.

[0102] In some examples, the protrusion height L1 of boss 800 is 0.5 mm, 0.75 mm, 1 mm, 1.25 mm, 1.5 mm, 1.75 mm, 2 mm, 2.25 mm, 2.5 mm, 2.75 mm, 3 mm, or other values ​​satisfying 0.5 mm ≤ L1 ≤ 3 mm. It is understood that L1 is greater than 0 mm.

[0103] In some examples, the length L2 of boss 800 is 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, or other values ​​that satisfy L2 ≤ 20 mm. It is understood that L2 is greater than 0 mm.

[0104] In some implementations, please refer to Figure 3 and Figure 4 The smoke plate 203 is detachably mounted in the mounting through hole 211.

[0105] The above embodiments facilitate regular cleaning and maintenance of the smoke extraction plate 203, reduce the impact of oil accumulation on the smoke extraction effect, and improve the maintainability and service life of the range hood 1000.

[0106] Specifically, the smoke extraction plate 203 is detachably installed in the mounting through hole 211, allowing users or maintenance personnel to remove or reinstall the smoke extraction plate 203 without disassembling the entire smoke collection chamber 201. Optionally, the smoke extraction plate 203 is provided with an operating hole 2032, allowing users to manually pry the smoke extraction plate 203 through the operating hole 2032 or pull it with a tool, thus facilitating the disassembly and installation process.

[0107] Optionally, the smoking plate 203 can be detachably installed in the mounting through hole 211 by means of a snap-fit ​​structure, screws, slide rails, slots, or magnetic attraction. This utility model does not make specific limitations in this regard.

[0108] In some implementations, please refer to Figure 3 and Figure 4 The smoking plate 203 is detachably installed in the mounting through hole 211 by magnetic attraction.

[0109] In the above embodiments, the disassembly and installation of the smoking plate 203 are made simpler and faster, and to a certain extent, the problems of clip fatigue damage or screw loosening caused by frequent operation are avoided.

[0110] Specifically, the smoking plate 203 is detachably mounted to the mounting through hole 211 by magnetic attraction. In one embodiment, a first magnetic element (such as a magnet or magnetic steel sheet) may be provided on the side wall of the mounting through hole 211, and a second magnetic element is provided at the rear end of the smoking plate 203. The two magnetic elements can generate magnetic attraction when they are close to each other, thereby stably fixing the smoking plate 203 in the mounting through hole 211. The second magnetic element includes, but is not limited to, permanent magnets (such as neodymium iron boron magnets, ferrite magnets), magnetic steel sheets, flexible magnetic strips, etc. In one embodiment, a first magnetic element (such as a magnet or magnetic steel sheet) may be provided on the side wall of the mounting through hole 211, and the smoking plate 203 is made of ferrous material. The first magnetic element can generate magnetic attraction on the smoking plate 203.

[0111] In one embodiment, at least one of the rear end face 203a of the smoking plate 203 and the inner wall surface of the mounting through hole 211 is provided with a boss 800. When the smoking plate 203 is magnetically fixed to the mounting through hole 211, the boss 800 acts as a spacer, so that when the smoking plate 203 is assembled in the mounting through hole 211, the rear end face 203a of the smoking plate 203 and the inner wall surface of the mounting through hole 211 can be separated by the boss 800, thereby forming an oil-containing space 700. Thus, when the smoking plate 203 is assembled in the mounting through hole 211, the oil-containing space 700 is also formed at the same time. The operation is simple and the oil-containing space 700 is easy to realize.

[0112] Optionally, in one embodiment, the smoke-collecting plate 203 can serve as an outer smoke-collecting plate, and the smoke-collecting cavity 200 further includes an inner smoke-collecting plate 210, which is located on the side of the outer smoke-collecting plate opposite to the opening of the smoke-collecting cavity 201. Accordingly, the inner smoke-collecting plate 210 is also provided with smoke holes 2031, and the distribution, number, and shape of the smoke holes 2031 in both can be the same or different.

[0113] In one embodiment, the inner smoke-absorbing plate 210 is connected to the end of the mounting through hole 211 away from the smoke-collecting chamber 201.

[0114] In some implementations, please refer to Figures 1 to 3 The range hood 1000 includes an oil cup 300, which is disposed on the surface of the front plate 205 of the smoke collection chamber 201 facing the smoke collection chamber 201, and located below the front end of the smoke extraction plate 203.

[0115] The above implementation method enables centralized discharge of condensate oil, improving the user experience.

[0116] Specifically, the oil cup 300 is disposed on the surface of the front plate 205 of the smoke collection chamber 200 facing the smoke collection chamber 201. The smoke extraction plate 203 is inclined downward from the rear to the front of the smoke collection chamber 200, and the oil cup 300 is disposed on the surface of the front plate 205 of the smoke collection chamber 200 facing the smoke collection chamber 201 to form a reverse-cavity range hood 1000. The grease separated by the smoke extraction plate 203 and the oil liquid condensed on the smoke extraction plate 203 can be collected in the oil cup 300, thereby reducing the grease content entering the fan assembly 600, extending the service life of the range hood 1000 and facilitating subsequent cleaning and maintenance.

[0117] Furthermore, the oil cup 300 can be detachably installed on the surface of the front plate 205 of the smoke collection chamber 200 facing the smoke collection chamber 201. Users can periodically remove the oil cup 300 to pour out and clean the condensed oil accumulated inside, preventing excessive oil buildup from affecting hygiene.

[0118] Optionally, the volume and opening shape of the oil cup 300 can be determined based on factors including but not limited to the arrangement space of the range hood 1000 and the expected amount of oil. This utility model does not impose specific limitations in this regard.

[0119] In some implementations, please refer to Figure 3 and Figure 4 ,as well as Figures 7 to 10 The range hood 1000 also includes a flow guiding structure 209, which is located on the smoke extraction plate 203. The flow guiding structure 209 is used to guide the condensed oil on the rear end of the smoke extraction plate 203 to flow to the front end of the smoke extraction plate 203 to prevent the condensed oil from dripping onto the rear plate 202.

[0120] In the aforementioned range hood 1000, the flow guiding structure 209 is used to guide the condensed oil on the rear end of the smoke plate 203 to flow to the front end of the smoke plate 203 to prevent the condensed oil from dripping onto the rear plate 202. This can, to a certain extent, avoid dripping caused by the condensed oil accumulating at the bottom of the rear plate 202, thereby reducing the user's cleaning burden and improving the user experience.

[0121] Specifically, during the cooking process, when oil fumes enter the smoke collection chamber 201 and come into contact with the rear surface of the smoke extraction plate 203, condensed oil is formed. Therefore, due to the presence of the drainage structure 209, the condensed oil will not drip directly onto the rear plate 202 under gravity, causing it to slide rapidly down the surface of the rear plate 202 to the bottom. Instead, it is guided by the drainage structure 209 to flow towards the front end of the smoke extraction plate 203, thereby effectively preventing the condensed oil from accumulating and dripping at the bottom of the rear plate 202. This reduces the risk of condensed oil dripping onto the stovetop, improves the user's cleaning experience, and enhances the comfort of using the range hood 1000.

[0122] In some implementations, please refer to Figure 3 and Figure 4 ,as well as Figures 7 to 10 The flow-guiding structure 209 is used to guide the condensed oil to the smoke plate 203 part around the smoke hole 2031.

[0123] In the above embodiments, the condensed oil can be effectively diverted away from the rear plate 202, further preventing the condensed oil from dripping onto the rear plate 202.

[0124] Specifically, the smoke plate 203 portion surrounding the smoke hole 2031 refers to the solid structure on the smoke plate 203 located around the edge of the smoke hole 2031, excluding the smoke hole 2031 itself.

[0125] The flow-guiding structure 209 allows the condensed oil to gradually flow along the guide of the flow-guiding structure 209 to the outer periphery of the smoke hole 2031 after the oil fumes condense at the rear end of the smoke plate 203, and then flow to the oil cup 300 under the action of gravity.

[0126] In some implementations, please refer to Figures 7 to 10 In the direction facing forward of the range hood 1000, the projections of the drainage structure 209 and the smoke inlet 2031 on the front panel 205 of the smoke collection chamber 200 do not coincide.

[0127] In the above embodiment, the condensed oil can be guided to the smoke plate 203 portion surrounding the smoke hole 2031 and smoothly flow into the oil cup 300.

[0128] Specifically, in the direction of the range hood 1000 facing forward, the projections of the flow-guiding structure 209 and the smoke-absorbing hole 2031 on the front panel 205 of the smoke collection cavity 200 do not coincide, that is, the flow-guiding structure 209 is arranged in an alternating manner relative to the smoke-absorbing hole 2031 in spatial position.

[0129] On the one hand, it can prevent condensed oil from directly entering the smoke inlet 2031 and causing the condensed oil to be sucked into the fan assembly 600 with the airflow. On the other hand, the flow-guiding structure 209, which is arranged in a staggered manner with the smoke inlet 2031, can guide the condensed oil to the smoke plate 203 part around the smoke inlet 2031, so that the condensed oil can flow further to the oil cup 300, thereby achieving effective collection and discharge of condensed oil.

[0130] In an optional embodiment, in the direction of the range hood 1000 facing left or right, the projection of the drainage structure 209 and the smoke inlet 2031 on the left plate 206 or right plate 207 of the smoke collection chamber 200 does not coincide.

[0131] In some implementations, please refer to Figures 7 to 10 The smoking plate 203 includes a rear end face 203a and a lower end face 203b that are connected to each other, and the drainage structure 209 is provided at least a portion of the connection formed by the connection between the rear end face 203a and the lower end face 203b.

[0132] In the above embodiment, the condensed oil at the rear end of the smoke plate 203 can be guided to the oil cup 300 through a simple structure.

[0133] Specifically, the rear end face 203a of the smoke plate 203 is connected to the lower end face 203b. The flow guiding structure 209 is provided at least a portion of the connection formed by the connection between the upper end face and the lower end face 203b, so that when the condensed oil flows from the rear end face 203a to the lower end face 203b, it can be more effectively intercepted by the flow guiding structure 209 and guided to the oil cup 300 in a timely manner.

[0134] Optionally, in one embodiment, the range hood 1000 may include a plurality of airflow guiding structures 209, which are evenly or unevenly arranged in the left-right direction at the connection formed by the connection between the rear end face 203a and the lower end face 203b of the smoke extraction plate 203.

[0135] In some implementations, please refer to Figures 7 to 10 The drainage structure 209 is provided with a drainage groove 2091. The side wall of the drainage groove 2091 is connected to the rear end face 203a and the lower end face 203b.

[0136] In the above embodiments, the condensed oil is diverted by connecting the side wall of the groove to the surface, which to a certain extent avoids dripping caused by the condensed oil accumulating at the bottom of the rear plate 202.

[0137] Specifically, at least a portion of the opening of the drainage groove 2091 faces the smoke collection chamber 201. The sidewall of the drainage groove 2091 is connected to the rear end face 203a and the lower end face 203b, so that the drainage groove 2091 forms a continuous drainage space between the upper end face and the lower end face 203b of the smoke extraction plate 203. Optionally, the sidewall of the drainage groove 2091 can be connected to the upper end face and the lower end face 203b by rounding.

[0138] Optionally, the drainage channel 2091 can be integrally formed during the stamping process of the smoke extraction plate 203, so that there are no seams between the side wall of the drainage channel 2091 and the rear end face 203a and the lower end face 203b, thereby reducing the risk of leakage and scale buildup.

[0139] When the condensed oil flows down from the rear end face 203a, it can be received by the drainage channel 2091 and guided along the side wall of the drainage channel 2091 to the lower end face 203b area, and further flow to the oil cup 300 under the action of gravity, thereby avoiding the condensed oil from dripping directly onto the surface of the rear plate 202 to a certain extent.

[0140] In some implementations, please refer to Figures 7 to 10 The drainage channel 2091 has a first groove 2091a formed on the rear end face 203a. The first groove 2091a has a gradually expanding shape in the direction away from the upper end of the smoke plate 203.

[0141] The drainage groove 2091 has a second groove 2091b formed on its lower end face 203b. The second groove 2091b has a tapering shape in the direction away from the rear end of the smoke plate 203.

[0142] In the above embodiments, the oil collection efficiency at the rear end of the smoke plate 203 is improved.

[0143] Specifically, the drainage channel 2091 includes a first opening 2091a and a second opening 2091b. The first opening 2091a is formed on the rear end face 203a, and the second opening 2091b is formed on the lower end face 203b. The first opening 2091a gradually extends from the side near the upper end of the smoke plate 203 towards the side away from the upper end of the smoke plate 203, making it easier for the condensed oil on the rear end face 203a to enter the drainage channel 2091, thereby avoiding the disorderly diffusion of oil on the rear end face 203a to a certain extent.

[0144] Correspondingly, the second slot 2091b gradually narrows from the side near the rear end of the smoke plate 203 to the side away from the rear end of the smoke plate 203, so that the condensed oil entering the guide slot 2091 is gradually gathered as it migrates towards the lower end face 203b, and thus smoothly guided along the lower end face 203b to the smoke plate 203 part around the smoke hole 2031 under the action of gravity, and then guided into the oil cup 300.

[0145] In some implementations, please refer to Figures 7 to 10 The drainage channel 2091 is surrounded by a rib structure 2092. The rib structure 2092 is a connection formed by the connection between the rear end face 203a and the lower end face 203b, which is recessed towards the front and top of the range hood 1000.

[0146] In the above embodiments, the integrity of the smoking plate 203 structure can be guaranteed.

[0147] Specifically, the connection formed by connecting the rear end face 203a of the smoke extraction plate 203 to the lower end face 203b of the smoke extraction plate 203 is recessed towards the front and top of the range hood 1000, forming a ribbed structure 2092. The sidewalls of the ribbed structure 2092 form a drainage groove 2091.

[0148] Optionally, a rib structure 2092 can be formed by a sheet metal pressing process to create a drainage groove 2091, which can ensure the integrity of the smoke extraction plate 203 structure.

[0149] Furthermore, since the rib structure 2092 is concave in the forward and upward direction, the condensed oil naturally converges into the drainage groove 2091 formed by the rib structure 2092 when it flows downward on the rear end face 203a, and gradually flows down to the lower end face 203b under the action of gravity, thereby preventing the condensed oil from dripping directly onto the surface of the rear plate 202.

[0150] In some implementations, please refer to Figures 7 to 10 The ribbed structure 2092 satisfies at least one of the following:

[0151] The length of the rib structure 2092 is L3, and L3 ≥ 3 mm;

[0152] The width of the rib structure 2092 is L4, and L4 ≥ 3 mm;

[0153] The depth of the rib structure 2092 is L5, and L5 ≥ 3 mm.

[0154] In the above embodiments, the drainage effect of the drainage channel 2091 can be improved.

[0155] Specifically, at least one of the length, width, and depth of the rib structure 2092 is greater than or equal to 3 mm, giving the drainage groove 2091 formed by the rib structure 2092 a more pronounced concave shape, thereby further improving the guiding effect on condensed oil. Specifically, the larger size (greater than or equal to 3 mm) allows more condensed oil on the rear end of the smoke plate 203 to be guided by the drainage groove 2091 to the front end of the smoke plate 203, where it is collected by the oil cup 300.

[0156] In some examples, the length of the rib structure 2092 is L3 equal to 3 mm, 3.3 mm, 3.6 mm, 3.9 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5.1 mm, 5.4 mm, 5.7 mm, 6 mm or other values ​​that satisfy L3 ≥ 3 mm.

[0157] In some examples, the width of the rib structure 2092 is L2 equal to 3 mm, 3.3 mm, 3.6 mm, 3.9 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5.1 mm, 5.4 mm, 5.7 mm, 6 mm or other values ​​that satisfy L4 ≥ 3 mm.

[0158] In some examples, the depth of the rib structure 2092 is L3 equal to 3 mm, 3.3 mm, 3.6 mm, 3.9 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5.1 mm, 5.4 mm, 5.7 mm, 6 mm or other values ​​that satisfy L5 ≥ 3 mm.

[0159] Optionally, the upper limits of the length, width and depth of the rib structure 2092 can be determined based on factors including but not limited to the thickness of the plate, structural strength, flow characteristics of condensed oil, and processing feasibility. This utility model does not impose specific limitations in this regard.

[0160] In some implementations, please refer to Figures 7 to 10 The smoke extraction plate 203 has multiple smoke extraction holes 2031, which are arranged at intervals along the left and right directions of the range hood 1000. In the direction of the front and rear ends of the smoke extraction plate 203, the smoke extraction holes 2031 form an air intake channel 2035. The number of drainage structures 209 is N1, and the number of air intake channels 2035 is N2, ≤1 / 5≤N1 / N2.

[0161] In the above embodiment, the drainage structure 209 can effectively guide the condensed oil at the rear end of the smoke plate 203 into the oil cup 300.

[0162] Specifically, in the direction of the front and rear ends of the smoke plate 203, the smoke hole 2031 forms an air intake channel 2035. Optionally, in one embodiment, an air intake channel 2035 may include one smoke hole 2031. In one embodiment, an air intake channel 2035 may include at least two spaced smoke holes 2031.

[0163] If the number of drainage structures 209 is too small, less condensed oil will be collected at the rear end of the smoke plate 203. N1 / N2≥1 / 5 allows the drainage structures 209 to guide more and more condensed oil at the rear end of the smoke plate 203 into the oil cup 300, thereby preventing condensed oil from dripping onto the rear plate 202 to a certain extent.

[0164] In some cases, N1 / N2 equals 1 / 5, 2 / 5, 3 / 5, 4 / 5, or other values ​​that satisfy N1 / N2 ≥ 1 / 5.

[0165] Optionally, the upper limit of N1 / N2 can be determined based on factors including but not limited to the size of the smoke plate 203, the amount of condensed oil generated, and manufacturing process constraints. This utility model does not impose specific limitations in this regard.

[0166] Optionally, in one embodiment, N1 / N2≤1 can, to some extent, prevent the smoke plate 203 from deforming during processing due to an excessive number of drainage structures 209.

[0167] Optionally, the shape and size of the smoking hole 2031 can be determined according to the smoking needs. This utility model does not make specific limitations in this regard. The shapes and sizes of multiple smoking holes 2031 can be the same or different.

[0168] In some implementations, please refer to Figures 1 to 4 The surface of the rear plate 202 facing the smoke collection chamber 201 is provided with a rib structure 204. The rib structure 204 is used to change the distribution of condensed oil on the surface of the rear plate 202 facing the smoke collection chamber 201 to prevent condensed oil from accumulating at the bottom of the rear plate 202.

[0169] In the aforementioned range hood 1000, the surface of the rear panel 202 facing the smoke collection chamber 201 is provided with a rib structure 204. The rib structure 204 is used to change the distribution of condensed oil on the surface of the rear panel 202 facing the smoke collection chamber 201, so as to prevent the condensed oil from accumulating at the bottom of the rear panel 202. This can, to a certain extent, avoid dripping caused by the accumulation of condensed oil at the bottom of the rear panel 202, thereby reducing the cleaning burden on users and improving the user experience.

[0170] Specifically, the surface of the rear panel 202 facing the smoke collection chamber 201 is provided with a ribbed structure 204. The ribbed structure 204 is used to change the distribution of condensed oil on the surface of the rear panel 202 facing the smoke collection chamber 201 to prevent condensed oil from accumulating at the bottom of the rear panel 202. Specifically, during cooking, when oil fumes enter the smoke collection chamber 201 and come into contact with the surface of the rear panel 202, the condensed oil formed will not directly slide down the surface of the rear panel 202 to the bottom under the action of gravity. Instead, it is guided or retained by the ribbed structure 204, thereby changing its distribution on the surface of the rear panel 202. This effectively prevents condensed oil from accumulating and dripping at the bottom of the rear panel 202, thereby reducing the risk of condensed oil dripping onto the stovetop, improving the user's cleaning experience, and enhancing the comfort of using the range hood 1000.

[0171] In some implementations, please refer to Figure 11 and Figure 12 In the left-right direction of the range hood 1000, the minimum length of the rib structure 204 is L6, and the length of the back plate 202 is L7, 0.6≤L6 / L7≤0.9.

[0172] In the above embodiments, the effectiveness of the ribbed structure 204 in intervening with the condensing oil can be improved, and at the same time, the excessive length of the ribbed structure 204 can be avoided to a certain extent from affecting the overall strength and processing technology of the back plate 202.

[0173] Specifically, the minimum length L6 of the ribbed structure 204 refers to the minimum dimension of the ribbed structure 204 in the left-right direction. The length L7 of the back plate 202 refers to the dimension of the back plate 202 in the left-right direction.

[0174] The ratio 0.6≤L6 / L7≤0.9 can improve the effectiveness of the ribbed structure 204 in intervening with the condensing oil, and can also prevent the ribbed structure 204 from being too long and affecting the overall strength and processing technology of the back plate 202.

[0175] By setting 0.6≤L6 / L7≤0.9, the condensed oil can be evenly dispersed on the surface of the back plate 202, preventing it from concentrating at the bottom edge and thus preventing it from dripping. Furthermore, the structural stability and manufacturing cost of the back plate 202 are also considered, ensuring that the ribbed structure 204 is not easily deformed during molding while maintaining good overall flatness.

[0176] In some examples, L6 / L7 = 0.6, 0.63, 0.66, 0.69, 0.72, 0.75, 0.78, 0.81, 0.84, 0.87, 0.9, or other values ​​that satisfy 0.6 ≤ L6 / L7 ≤ 0.9.

[0177] In some implementations, please refer to Figure 13 and Figure 14 In the direction perpendicular to the surface of the rear plate 202, the thickness of the rib structure 204 is L8, where L8 ≥ 0.8 mm.

[0178] In the above embodiments, the bottom of the condensate oil back plate 202 is further prevented from accumulating and dripping, thereby reducing the user's cleaning burden to a certain extent and improving the user experience.

[0179] Specifically, the thickness of the rib structure 204 refers to the dimension of the rib structure 204 in the direction perpendicular to the surface of the rear plate 202.

[0180] L8≥0.8 mm can, to a certain extent, ensure that the ribbed structure 204 has sufficient structural strength and stability after molding, and is not prone to deformation during the processing of the back plate 202 or long-term use.

[0181] In one embodiment, the rib structure 204 includes ribs 2041 that protrude from the surface of the rear plate 202 toward the smoke collection chamber 201. The greater thickness can give the ribs 2041 a significant height difference, guiding the condensed oil to flow along the extension direction of the ribs 2041 and to a certain extent preventing the condensed oil from sliding directly down to the bottom of the rear plate 202.

[0182] In one embodiment, the ribbed structure 204 is provided with a groove 2042, and the greater thickness can provide a larger volume of the groove 2042, thereby achieving a better oil retention effect.

[0183] In some examples, L8 = 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, or other values ​​that satisfy L8 ≥ 0.8 mm.

[0184] Optionally, the upper limit of the thickness L8 of the rib structure 204 can be determined based on factors including but not limited to the material properties of the back plate 202, the molding process, the structural strength requirements, and the effect of preventing condensate from dripping. This utility model does not impose specific limitations in this regard.

[0185] In some implementations, please refer to Figure 1 , Figure 3 , Figure 4 , Figure 11 and Figure 13 The rib structure 204 includes ribs 2041, which protrude from the surface of the rear plate 202 toward the smoke collection chamber 201. The ribs 2041 are used to guide the flow direction of the condensed oil to change the distribution of the condensed oil on the surface of the rear plate 202 toward the smoke collection chamber 201.

[0186] In the above embodiments, the ribs 2041 can disperse the oil, which helps to slow down the rate at which it accumulates at the bottom of the rear plate 202, reducing the cleaning burden on the user.

[0187] Specifically, in Figure 1 , Figure 3 , Figure 4 , Figure 11 and Figure 13 In one embodiment, the rib 2041 can be formed by pressing the back plate 202, that is, directly stamping the rib 2041 with a certain height and extension direction onto the surface of the back plate 202. In other embodiments, the rib 2041 can also be a protruding structure provided on the surface of the back plate 202 facing the smoke collection chamber 201. Optionally, it can be combined with the back plate 202 by welding, riveting, or die forming.

[0188] Ribs 2041 are used to guide the flow direction of condensed oil to change the distribution of condensed oil on the surface of the rear plate 202 facing the smoke collection chamber 201. Figure 11 In the diagram, the arrows indicate the flow direction of the condensed oil. When oil fumes enter the smoke collection chamber 201 and condense into oil droplets on the surface of the rear plate 202, the oil droplets encounter the obstruction of the ribs 2041 as they move downwards under the influence of gravity. Since the ribs 2041 extend in the left-right direction, most of the condensed oil flows along the extension direction of the ribs 2041 on their surface, while a small portion of the condensed oil moves downwards across the ribs 2041. After a long displacement, the oil is evenly distributed on the surface of the rear plate 202 facing the smoke collection chamber 201 instead of accumulating at the bottom of the rear plate 202 and dripping down.

[0189] In some implementations, please refer to Figure 1 and Figure 13 The rib 2041 includes a first rib portion 2041a that is inclined relative to the horizontal plane.

[0190] In the above embodiments, a guiding effect can be generated during the natural migration of condensed oil under the action of gravity, so as to disperse the condensed oil and reduce the oil accumulation at the bottom of the rear plate 202.

[0191] Specifically, the first rib portion 2041a is inclined relative to the horizontal plate, that is, the first rib portion 2041a is arranged at a certain angle in three-dimensional space, so that the first rib portion 2041a forms a height difference in its extension direction. During the flow of condensed oil, it will not flow rapidly in a straight direction to the bottom of the rear plate 202, but will be guided by this height difference to flow along the extension direction of the first rib portion 2041a, so that the condensed oil can be dispersed to different areas of the rear plate 202 facing the smoke collection chamber 201.

[0192] In some implementations, please refer to Figure 1 and Figure 13 The rib 2041 includes a plurality of first rib portions 2041a spaced apart in the vertical direction of the range hood 1000. The first rib portions 2041a have a symmetrical structure along the central axis M of the rear plate 202.

[0193] In the above embodiments, the multiple symmetrical first rib portions 2041a can further improve the prevention of condensed oil from accumulating and dripping at the bottom of the rear plate 202, while also making the distribution of condensed oil in the left and right directions of the rear plate 202 more even.

[0194] Specifically, multiple first rib sections 2041a are arranged sequentially at intervals in the vertical direction, so that the condensed oil will pass through different rib sections 2041 in sequence during the downward flow of the range hood, thereby being guided or dispersed at multiple locations. Furthermore, the first rib sections 2041a are symmetrically arranged with respect to the rear central axis M of the range hood 1000, which can make the distribution of condensed oil in the left and right directions of the rear plate 202 more even, improving the dispersion effect of condensed oil and the overall uniformity of oil guiding.

[0195] It should be understood that M represents the central axis of the range hood 1000, and P represents the central axis of the rear panel 202. In the assembled state, the rear panel 202 is installed in the range hood 1000, and the central axis P of the rear panel 202 coincides with the central axis M of the range hood 1000.

[0196] In some implementations, please refer to Figure 1 and Figure 13 The rib 2041 includes a plurality of second rib portions 2041b arranged at an inclination relative to the horizontal plane, and the second rib portions 2041b are connected to one end of two adjacent first rib portions 2041a.

[0197] In the above embodiments, oil droplets are further prevented from accumulating and falling at the bottom of the rear plate 202.

[0198] Specifically, the second rib portion 2041b is inclined relative to the horizontal plate, that is, the second rib portion 2041b is arranged at a certain angle in three-dimensional space, so that the second rib portion 2041b forms a certain guiding characteristic in space. When the condensed oil moves from top to bottom on the surface of the rear plate 202, the oil droplets will first pass through the first rib portion 2041a and disperse along the extension direction of the first rib portion 2041a; subsequently, as the oil droplets continue to move downward, they will enter the guiding path of the second rib portion 2041b, and under the action of its inclined structure, some of the condensed oil will be further guided to the next adjacent first rib portion 2041a, thereby further extending the movement path of the condensed oil and dispersing it at different positions on the surface of the rear plate 202.

[0199] Furthermore, when the second rib portion 2041b connects two adjacent first rib portions 2041a, it can form a continuous oil guiding network, further preventing oil droplets from accumulating and falling at the bottom of the rear plate 202.

[0200] In some implementations, please refer to Figure 2 , Figure 12 and Figure 14 The ribbed structure 204 is provided with a groove 2042, which is used to accommodate condensed oil to change the distribution of condensed oil on the surface of the rear plate 202 facing the smoke collection chamber 201.

[0201] In the above embodiments, the groove 2042 can store oil, which helps to slow down the rate at which oil accumulates at the bottom of the rear plate 202 and reduces the cleaning burden on the user.

[0202] Specifically, in Figure 2 , Figure 12 and Figure 14 In one embodiment, the groove 2042 can be formed by pressing the back plate 202, that is, by applying a stamping process to a local area of ​​the surface of the back plate 202, causing that area to be recessed relative to the adjacent area, thereby obtaining a groove-shaped structure with a certain depth and volume. In other embodiments, the groove 2042 can also be a groove-shaped structure formed by processes such as cutting. It should be understood that in this case, the thickness of the back plate 202 should not be less than the thickness of the groove 2042.

[0203] The groove 2042 is used to accommodate condensed oil to change the distribution of condensed oil on the surface of the rear plate 202 facing the smoke collection chamber 201. Figure 12 In the diagram, the arrow indicates the flow direction of the condensed oil. The groove 2042 can intercept and collect the oil droplets as they flow along the surface of the back plate 202, so that the condensed oil is preferentially collected in the groove 2042. This, to a certain extent, prevents the condensed oil from gathering in the bottom edge area of ​​the back plate 202 and dripping directly onto the stove surface.

[0204] In some implementations, please refer to Figure 12 and Figure 14 The groove 2042 includes a first groove portion 2042a extending in a horizontal direction.

[0205] In the above embodiments, oil can be stored to disperse condensed oil and reduce the accumulation of oil at the bottom of the rear plate 202.

[0206] Specifically, the first groove portion 2042a extends in the left-right direction and its length direction is parallel to the horizontal plane, so that the first groove portion 2042a can laterally intercept and temporarily store the oil droplets under the gravity of the condensed oil, and allow the condensed oil to diffuse in the left-right direction.

[0207] In some implementations, please refer to Figure 12 and Figure 14 The groove 2042 includes a plurality of first groove portions 2042a spaced apart in the vertical direction of the range hood 1000. The first groove portions 2042a are groove portions symmetrical along the central axis M of the rear plate 202.

[0208] In the above embodiments, the multiple symmetrical first groove portions 2042a can further improve the prevention of condensed oil from accumulating and dripping at the bottom of the rear plate 202, while also making the distribution of condensed oil in the left-right direction of the rear plate 202 more even.

[0209] Specifically, multiple first groove portions 2042a are arranged sequentially at intervals in the vertical direction. As the condensed oil moves down along the surface of the rear plate 202, the condensed oil will preferentially enter the nearest first groove portion 2042a below and be stored therein. When the volume of the first groove portion 2042a is gradually filled, the excess condensed oil will continue to flow downward and enter another adjacent first groove portion 2042a below, thereby realizing the step-by-step interception and storage of oil droplets.

[0210] Furthermore, the first groove portion 2042a is a groove portion symmetrical along the central axis M of the rear plate 202, which can make the condensed oil tend to be evenly distributed in the left and right directions of the rear plate 202.

[0211] In some implementations, please refer to Figure 12 and Figure 14 The groove 2042 includes a plurality of second groove portions 2042b extending in a vertical direction, and the second groove portions 2042b are connected to one end of two adjacent first groove portions 2042a.

[0212] In the above embodiments, oil droplets are further prevented from accumulating and falling at the bottom of the rear plate 202.

[0213] Specifically, multiple second groove portions 2042b extend vertically and are interconnected in the vertical direction, and are also connected to the first groove portion 2042a, so that condensed oil can be transferred between the first groove portion 2042a and the second groove portion 2042b.

[0214] When the condensed oil accumulates to a certain amount in the first groove portion 2042a, some of the oil can flow along the second groove portion 2042b and be guided to the other first groove portion 2042a below.

[0215] Optionally, in one embodiment, the number of first groove portions 2042a is greater than or equal to 3, thereby ensuring the oil storage capacity of the grooves 2042 to a certain extent. Correspondingly, the number of second groove portions 2042b is greater than or equal to 4.

[0216] In some implementations, please refer to Figure 14 The groove width of groove 2042 is L9, and 2 mm ≤ L9 ≤ 10 mm.

[0217] In the above embodiments, on the one hand, the oil holding efficiency of the groove 2042 can be improved, and on the other hand, the structural strength of the back plate 202 can be improved.

[0218] Specifically, the groove width of the groove 2042 refers to the dimension of the groove opening of the groove 2042 in the extension direction of the back plate 202. When the groove width L9 is too small (for example, less than 2 mm), the condensed oil will not easily enter the groove 2042, thereby reducing the oil holding efficiency of the groove 2042. When the groove width L9 is too large (for example, greater than 10 mm), it may affect the structural strength of the back plate 202.

[0219] In some examples, the groove width L9 of groove 2042 is 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, or other values ​​that satisfy 2 mm ≤ L9 ≤ 10 mm.

[0220] In some embodiments, the ribbed structure 204 and the back plate 202 are integrally formed.

[0221] In the above embodiments, the number of parts can be reduced, the assembly complexity of the range hood 1000 can be reduced, production efficiency can be improved, and the bonding strength and overall stability of the rib structure 204 and the back plate 202 can be enhanced.

[0222] Optionally, the rib structure 204 can be formed simultaneously during the stamping, pressing or injection molding process of the back plate 202, so that there is no additional splicing gap between the rib structure 204 and the back plate 202, thereby avoiding the problem of condensate leakage or scale buildup caused by splicing gaps to a certain extent.

[0223] 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 an embodiment or example that are included in at least one embodiment or example of this utility model. 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.

[0224] 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. A range hood, characterized in that, include: The housing contains a fan assembly; A smoke collection chamber is connected to the box body. The smoke collection chamber has a downward-facing smoke collection cavity. The smoke collection chamber includes a rear plate and a smoke extraction plate that surround the smoke collection cavity. The smoke extraction plate is inclined downward from the rear side to the front side of the smoke collection chamber. The smoke extraction plate has smoke extraction holes. An oil-containing space is provided to contain condensed oil on the rear end face of the smoke plate to prevent the condensed oil from dripping onto the rear plate.

2. The range hood according to claim 1, characterized in that, The top wall of the smoke collection chamber is provided with an installation through hole, and the smoke-collecting plate is disposed in the installation through hole. The rear end face of the smoke-collecting plate and the side wall face of the installation through hole are spaced apart to form the oil-containing space between the rear end of the smoke-collecting plate and the side wall of the installation through hole.

3. The range hood according to claim 2, characterized in that, The smoking plate includes a smoking section and a bent section. The smoking section has a smoking hole. The bent section is connected to the rear end of the smoking section and extends away from the opening of the smoking section. The rear end face of the smoking plate includes the surface of the bent section facing the inner wall of the mounting through hole.

4. The range hood according to claim 2, characterized in that, The range hood includes a boss that protrudes from at least one of the rear end face of the smoke extraction plate and the inner wall of the mounting through hole, and the boss is used to define the width of the oil-containing space.

5. The range hood according to claim 4, characterized in that, The boss includes a first boss, which is a structure symmetrical about the central axis of the range hood, and / or; The protrusion includes a plurality of second protrusions, which are symmetrically distributed along the central axis of the range hood.

6. The range hood according to claim 4, characterized in that, The protrusion height of the boss is L1, where 0.5 mm ≤ L1 ≤ 3 mm, and / or; In the left-right direction of the range hood, the length of the boss is L2, where L2 ≤ 20 mm.

7. The range hood according to any one of claims 2-6, characterized in that, The smoking plate is detachably mounted in the mounting through hole.

8. The range hood according to claim 7, characterized in that, The smoking plate is detachably installed in the mounting through hole by magnetic attraction.

9. The range hood according to claim 1, characterized in that, The range hood includes an oil cup, which is disposed on the surface of the front plate of the smoke collection chamber facing the smoke collection chamber and located below the front end of the smoke extraction plate.

10. The range hood according to claim 9, characterized in that, The range hood also includes a flow guiding structure, which is disposed on the smoke extraction plate. The flow guiding structure is used to guide the condensed oil on the rear end of the smoke extraction plate to flow to the front end of the smoke extraction plate to prevent the condensed oil from dripping onto the rear plate.

11. The range hood according to claim 10, characterized in that, The flow-guiding structure is used to guide the condensed oil to the smoke plate portion surrounding the smoke hole.

12. The range hood according to claim 11, characterized in that, In the forward direction of the range hood, the projection of the drainage structure and the smoke inlet on the front panel of the smoke collection cavity do not coincide.

13. The range hood according to claim 10, characterized in that, The smoking plate includes a rear end face and a lower end face that are connected to each other, and the drainage structure is disposed at at least a portion of the connection formed by the connection between the rear end face and the lower end face.

14. The range hood according to claim 13, characterized in that, The drainage structure is provided with a drainage groove, the sidewall of which is connected to the rear end face and the lower end face.

15. The range hood according to claim 14, characterized in that, The drainage channel has a first opening formed on the rear end face, and the first opening is gradually widening in the direction away from the upper end of the smoking plate; The drainage channel has a second opening formed on its lower end surface, and the second opening tapers in a direction away from the rear end of the smoking plate.

16. The range hood according to claim 14, characterized in that, The drainage channel is surrounded by a rib structure, which is formed by the connection between the rear end face and the lower end face, recessed towards the front and top of the range hood.

17. The range hood according to claim 16, characterized in that, The rib structure satisfies at least one of the following: The length of the rib structure is L3, where L3 ≥ 3 mm; The width of the rib structure is L4, and L4 ≥ 3 mm; The depth of the rib structure is L5, where L5 ≥ 3 mm.

18. The range hood according to any one of claims 10-17, characterized in that, The smoke extraction plate has multiple smoke extraction holes, which are spaced apart along the left and right sides of the range hood. In the direction of the front and rear ends of the smoke extraction plate, the smoke extraction holes form an air intake channel. The number of air intake structures is N1, and the number of air intake channels is N2, where N1 / N2 ≥ 1 / 5.

19. The range hood according to claim 1, characterized in that, The rear plate has a ribbed structure on the surface facing the smoke collection chamber. The ribbed structure is used to change the distribution of condensed oil on the surface of the rear plate facing the smoke collection chamber to prevent the condensed oil from accumulating at the bottom of the rear plate.

20. The range hood according to claim 19, characterized in that, In the left-right direction of the range hood, the minimum length of the ribbed structure is L6, and the length of the rear plate is L7, where 0.6≤L6 / L7≤0.

9.

21. The range hood according to claim 19, characterized in that, In the direction perpendicular to the surface of the rear plate, the thickness of the rib structure is L8, where L8 ≥ 0.8 mm.

22. The range hood according to claim 19, characterized in that, The ribbed structure includes ribs that protrude from the surface of the rear plate facing the smoke collection chamber. The ribs are used to guide the flow direction of the condensed oil to change the distribution of the condensed oil on the surface of the rear plate facing the smoke collection chamber.

23. The range hood according to claim 22, characterized in that, The rib includes a first rib portion that is inclined relative to the horizontal plane.

24. The range hood according to claim 23, characterized in that, The ribs include a plurality of first rib portions spaced apart in the vertical direction of the range hood, and the first rib portions have a symmetrical structure along the central axis of the rear plate.

25. The range hood according to claim 23, characterized in that, The rib includes a plurality of second rib portions that are inclined relative to the horizontal plane, and the second rib portions are connected to one end of two adjacent first rib portions.

26. The range hood according to claim 19, characterized in that, The ribbed structure is provided with grooves, which are used to accommodate condensed oil to change the distribution of condensed oil on the surface of the rear plate facing the smoke collection chamber.

27. The range hood according to claim 26, characterized in that, The groove includes a first groove portion that extends in a horizontal direction.

28. The range hood according to claim 27, characterized in that, The groove includes a plurality of first groove portions spaced apart in the vertical direction of the range hood, wherein the first groove portions are groove portions symmetrical along the central axis of the rear plate.

29. The range hood according to claim 28, characterized in that, The groove includes a plurality of second groove portions extending in a vertical direction, and the second groove portions are connected to one end of two adjacent first groove portions.

30. The range hood according to claim 26, characterized in that, The groove opening width is L9, where 2 mm ≤ L9 ≤ 10 mm.

31. The range hood according to any one of claims 19-30, characterized in that, The ribbed structure and the rear plate are integrally formed.

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