Deflector and range hood

Abstract

The application provides a guide plate and an extractor hood. The guide plate is used in the extractor hood. The extractor hood comprises a fan assembly, a box body, a flange connecting the fan assembly and the box body, and a guide plate arranged on the front end surface of the box body. The box body and the guide plate surround to form a guide cavity. The guide plate comprises a first guide part, a second guide part and a third guide part which are sequentially connected. The first guide part is arranged on the inner wall of the front end of the flange. The second guide part is smoothly connected with the first guide part. The third guide part is provided with an air inlet. The second guide part is located below the first guide part and above the third guide part. The second guide part is inclined forward relative to the first guide part. The application can reduce the risk of oil dripping at the air inlet and improve the user experience.

Description

Technical Field

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

[0002] With the continuous development of science and technology, range hoods have become one of the most common kitchen appliances in people's daily lives. In existing technology, after prolonged use, oil dripping is prone to occur at the bottom of the flange inside the range hood that connects the fan assembly and the housing. The oil dripping from the bottom of the flange will drip onto the air inlet, eventually penetrating the air inlet and dripping outside the range hood, resulting in oil dripping from the air inlet. Summary of the Invention

[0003] This application provides a baffle plate and a range hood that can reduce the risk of oil dripping from the air inlet and improve the user experience.

[0004] To solve the above-mentioned technical problems, this application provides a baffle plate for use in a range hood. The range hood includes a fan assembly, a housing, a flange connecting the fan assembly and the housing, and a baffle plate disposed on the front end face of the housing. The housing and the baffle plate enclose a baffle cavity. The baffle plate includes a first baffle section, a second baffle section, and a third baffle section connected in sequence. The first baffle section is configured to be connected to the inner wall of the front end of the flange. The second baffle section is smoothly connected to the first baffle section. The third baffle section is provided with an air inlet. The second baffle section is located below the first baffle section and above the third baffle section, and the second baffle section is inclined forward relative to the first baffle section.

[0005] To solve the above-mentioned technical problems, this application further provides a range hood, which includes a fan assembly, a housing, a flange, and the aforementioned baffle plate. The flange connects the fan assembly and the housing. The baffle plate is disposed on the front end face of the housing, and the housing and the baffle plate surround to form a baffle cavity.

[0006] The beneficial effects of this application are as follows: The baffle plate of this application is used in a range hood. The range hood includes a fan assembly, a housing, a flange connecting the fan assembly and the housing, and a baffle plate disposed on the front end face of the housing. The housing and the baffle plate surround to form a baffle cavity. The baffle plate includes a first baffle section, a second baffle section, and a third baffle section connected in sequence. The first baffle section is configured to be connected to the inner wall of the front end of the flange. The second baffle section is smoothly connected to the first baffle section. The third baffle section is provided with an air inlet. The second baffle section is located below the first baffle section and above the third baffle section. The second baffle section is inclined forward relative to the first baffle section. The above method enables the airflow of oil fumes to be guided through the first, second, and third guide sections. The second guide section is smoothly connected to the first guide section and is inclined forward, reducing the flow resistance at the front end of the guide cavity, increasing the airflow rate, and improving the oil fume extraction efficiency of the range hood. Furthermore, the first guide section is located on the inner wall of the front end of the flange, and the second guide section is smoothly connected to the first guide section and is inclined forward. This allows the oil stains adhering to the inner wall of the flange to be guided from the inner wall of the first guide section to the inner wall of the second guide section. This reduces the risk that the oil stains adhering to the inner wall of the flange will accumulate at the bottom of the front end of the flange under gravity and drip through the air inlet, thus reducing the risk of oil dripping from the air inlet and improving the user experience. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0008] Figure 1 This is a schematic diagram of the structure of an embodiment of the range hood of this application;

[0009] Figure 2 yes Figure 1 Exploded structural diagram of the embodiment;

[0010] Figure 3 yes Figure 1 A cross-sectional structural diagram of the embodiment;

[0011] Figure 4 yes Figure 3 An enlarged structural diagram of region A in the embodiment;

[0012] Figure 5 This is a cross-sectional structural schematic diagram of another embodiment of the range hood of this application;

[0013] Figure 6 yes Figure 5 An enlarged structural diagram of region B in the embodiment;

[0014] Figure 7 This is a schematic diagram of another embodiment of the range hood of this application;

[0015] Figure 8 yes Figure 7 A cross-sectional structural diagram of the embodiment;

[0016] Figure 9 yes Figure 8 An enlarged structural diagram of region C in the embodiment;

[0017] Figure 10 This is a schematic diagram of the structure of one embodiment of the guide plate of this application;

[0018] Figure 11 yes Figure 10 A cross-sectional structural diagram of the embodiment. Detailed Implementation

[0019] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0020] The terms “first,” “second,” etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that, when used in this specification and the appended claims, the term “comprising” indicates the presence of the described feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term “and / or,” as used in this specification and the appended claims, refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0021] It should be noted that when one element is fixed to another element, this includes fixing the element directly to the other element or fixing the element to the other element through at least one other intermediate element. When one element is connected to another element, this includes connecting the element directly to the other element or connecting the element to the other element through at least one other intermediate element.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] With the continuous development of science and technology, range hoods have become one of the most common kitchen appliances in people's daily lives. In existing technology, after prolonged use, oil dripping is prone to occur at the bottom of the flange inside the range hood that connects the fan assembly and the housing. The oil dripping from the bottom of the flange will drip onto the air inlet, eventually penetrating the air inlet and dripping outside the range hood.

[0024] Typically, after a range hood is installed, the front end of the hood housing is the end closest to the user, and the rear end is positioned opposite the front end. It should be noted that, in this application, the front end or front side of a component or assembly refers to the end or side of the component or assembly closest to the user; the rear end or rear side of a component or assembly refers to the end or side of the component or assembly away from the user and opposite to the aforementioned front end or front side. In operation, the range hood can extract cooking fumes. This application will use the example of a range hood in operation for illustration.

[0025] This application first proposes a range hood, such as Figures 1 to 11 As shown. The range hood includes a fan assembly 12, a housing 13, a flange 14, and a baffle plate 11. The flange 14 connects the fan assembly 12 and the housing 13. The baffle plate 11 is located on the front end face of the housing 13, and the housing 13 and the baffle plate 11 form a baffle cavity 101. The baffle plate 11 includes a first baffle portion 111, a second baffle portion 112, and a third baffle portion 113 connected in sequence. The first baffle portion 111 is configured to connect to the inner wall of the front end 141 of the flange 14. The second baffle portion 112 is smoothly connected to the first baffle portion 111. The third baffle portion 113 is provided with an air inlet 102. The second baffle portion 112 is located below the first baffle portion 111 and above the third baffle portion 113, and the second baffle portion 112 is inclined forward relative to the first baffle portion 111.

[0026] Typically, the fan assembly 12 is positioned above the housing 13, and is connected to the housing 13 via a flange 14. (See also...) Figure 3 , Figure 4 Under the suction action of the fan assembly 12, the oil fume airflow enters the guide cavity 101 through the air inlet 102. In the guide cavity 101, the airflow near the inner wall of the cavity passes through the third guide section 113, the second guide section 112, and the first guide section 111 in sequence, and then enters the fan assembly 12.

[0027] The connection between flange 14 and housing 13 is usually located within the guide cavity 101. When the oil fume flows through the guide cavity 101, some of the oil droplets carried in the airflow will adhere to the inner wall of flange 14, forming oil stains. Under the action of gravity, the oil stains will flow to the bottom of flange 14 and drip through air inlet 102, causing oil dripping at air inlet 102. Since the front end 141 of flange 14 is closer to the user when the range hood is working, the oil fume airflow is more concentrated, and the projection of the front end 141 of flange 14 in the direction of gravity is usually closer to air inlet 102, this phenomenon is more obvious at the front end 141 of flange 14. Therefore, in this embodiment, the first guide section 111 is connected to the inner wall of the front end 141 of the flange 14, and the second guide section 112 is inclined forward relative to the first guide section 111 and smoothly connected to the first guide section 111. Therefore, not only can the oil fume airflow be guided by the first guide section 111, the second guide section 112, and the third guide section 113, and will not directly contact the front end 141 of the flange 14, but also when the oil stains attached to the flange 14 flow to the bottom of the front end 141 of the flange 14, they can flow along the inner wall of the first guide section 111 near the guide cavity 101 to the inner wall of the second guide section 112 near the guide cavity 101, instead of dripping directly onto the air inlet 102, reducing the risk of oil dripping from the air inlet 102. This arrangement also facilitates further guiding the oil stains to the inner wall of the third guide section 113, and then the oil stains can be concentrated and guided to the oil cup 18 of the range hood through other guide structures of the range hood.

[0028] Among them, see Figure 3 , Figure 4 , Figure 3 This illustrates an implementation method where the oil fume airflow is guided; see reference. Figure 8 , Figure 9 , Figure 9 An embodiment of oil sludge diversion is shown.

[0029] The beneficial effects of the above-mentioned configuration are that the guide plate 11 in this embodiment can guide the flow of oily fumes through the first guide portion 111, the second guide portion 112, and the third guide portion 113, reduce the flow resistance at the front end of the guide cavity 101, increase the flow rate of the airflow, and improve the oil fume extraction efficiency of the range hood. Furthermore, the first guide portion 111 is disposed on the inner wall of the front end 141 of the flange 14, and the second guide portion 112 is smoothly connected to the first guide portion 111 and is inclined forward. This can guide the oil stains attached to the inner wall of the flange 14 from the inner wall of the first guide portion 111 to the inner wall of the second guide portion 112, reducing the risk that the oil stains attached to the inner wall of the flange 14 will accumulate to the bottom of the front end of the flange 14 under the action of gravity and drip through the air inlet 102. Therefore, it can reduce the risk of oil dripping from the air inlet 102 and improve the user experience.

[0030] In some embodiments, see Figure 4 The angle between the side of the first guide section 111 facing the front end 141 of the flange 14 and the side of the second guide section 112 away from the guide cavity 101 is α, where 110°≤α<180°.

[0031] The above configuration further optimizes the oil guiding and flow guiding effects. Specifically, under the suction of the fan assembly 12, the oil fume airflow passes from bottom to top through the air inlet 102 and reaches the third guide section 113. Under the guiding effect of the third guide section 113, it reaches the second guide section 112, and is then guided into the fan assembly 12 by the guiding effects of the second guide section 112 and the first guide section 111. The larger the angle between the side of the first guide section 111 facing the flange 14 and the side of the second guide section 112 away from the guide cavity 101, the smaller the airflow turning angle and the faster the oil flow rate, but the smaller the space of the guide cavity 101. The smaller the angle between the side of the first guide section 111 facing the flange 14 and the side of the second guide section 112 away from the guide cavity 101, the larger the space of the guide cavity 101, but the larger the airflow turning angle and the worse the oil guiding effect. Setting the angle to α, where α is greater than or equal to 110 degrees and less than 180 degrees, such as 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 142 degrees, 145 degrees, 150 degrees, 155 degrees, 156 degrees, 160 degrees, 165 degrees, 168 degrees, 170 degrees, or 178 degrees, can reduce the compression on the guide cavity 101 and achieve better guide and oil guiding effects.

[0032] In some embodiments, see Figure 4 , Figure 10 , Figure 11The first guide portion 111 and the second guide portion 112 are integrally formed, and a smooth portion 1111 is formed at the connection between the two. The radius of curvature of the smooth portion 1111 is R, and R≥2mm.

[0033] The above-mentioned settings can further optimize the flow and oil guiding effects. The one-piece molding and the setting of the smooth part 1111 can better achieve a smooth connection between the first flow guiding part 111 and the second flow guiding part 112; the radius of curvature is greater than or equal to 2mm, such as 2mm, 3mm, 3.5mm or 4mm, which can achieve a streamlined design and improve the flow and oil guiding efficiency.

[0034] In other embodiments, the first guide portion 111 and the second guide portion 112 may also be smoothly connected by a smooth component.

[0035] In some embodiments, the range hood further includes an opening and closing plate 15, which is disposed on the side of the guide plate 11 away from the guide cavity 101 and is linked with the guide plate 11.

[0036] The above configuration improves user convenience and aesthetics. Specifically, the baffle 11 is linked to the opening and closing plate 15, meaning the baffle 11 opens when the opening and closing plate 15 opens and closes when the opening and closing plate 15 closes. For example, in one application scenario, the range hood enters the working state after the baffle 11 opens with the opening and closing plate 15.

[0037] In some embodiments, the opening and closing plate 15 is provided on the front end face of the housing 13, covering the side of the second guide portion 112 away from the guide cavity 101.

[0038] The above arrangement can reduce the phenomenon of oil stains adhering to the side of the opening and closing plate 15 near the guide cavity 101, and reduce the difficulty of cleaning. Specifically, the opening and closing plate 15 covers the side of the second guide section 112 away from the guide cavity 101, reducing the risk of oil fume airflow in the guide cavity 101 directly contacting the opening and closing plate 15, and reducing oil stains adhering.

[0039] In some embodiments, see Figure 3 , Figure 4 To improve the stability of the overall structure, the outer wall of the front end 141 of the flange 14 is connected to the inner wall of the housing 13, and the guide plate 11 passes through the front opening of the housing 13 and is connected to the inner wall of the front end 141 of the flange 14; the other end of the flange 14 is fixedly connected to the frame 122 of the fan assembly 12; the part of the housing 13 connected to the front end 141 of the flange 14 also extends forward and abuts against the cover 121 of the fan assembly 12.

[0040] In some embodiments, see Figure 4The opening and closing plate 15 is disposed on the front end face of the housing 13, covering the side of the second guide section 112 away from the guide cavity 101. The second guide section 112 includes a first sub-guide section 1121 connected to the first guide section 111 and a second sub-guide section 1122 connected to the first sub-guide section 1121 and the third guide section 113 respectively. In the vertical plane, the second sub-guide section 1122 is arranged forward and downward relative to the first sub-guide section 1121, so as to form a first cavity 103 in front of the first sub-guide section 1121 and the opening and closing plate 15, and a second cavity 104 is formed between the second sub-guide section 1122 and the opening and closing plate 15. The dimension of the first cavity 103 in the vertical direction y is larger than the dimension of the second cavity 104 in the vertical direction y.

[0041] In the working state, the vertical direction y is parallel to the direction of gravity. In the working state, the opening and closing plate 15 drives the guide plate 11 to open. It can be determined that in the vertical direction y, the upper part of the second guide section 112 is connected to the first guide section 111, and the lower part of the second guide section 112 is connected to the third guide section 113. Since the second sub-guide section 1122 is positioned forward and downward relative to the first sub-guide section 1121 in the vertical plane, it can be determined that the second sub-guide section 1122 bends downward relative to the first sub-guide section 1121, facilitating the forward and downward flow of oil.

[0042] The above configuration can further increase the size of the flow guide cavity 101. Typically, one end of the flange 14 is connected to the housing 13, and the other end is connected to the fan assembly 12. To improve the stability of the overall structure, the portion connecting the housing 13 and the flange 14 has a forward-extending abutment portion that abuts against the fan assembly 12. A vertically downward-facing flange structure 131 is provided at the abutment portion to increase the strength of the housing 13. Therefore, in the above embodiment, the first sub-flow guide portion 1121 and the opening / closing plate 15 form the first cavity 103, providing clearance space for the flange structure 131 of the housing 13; the second sub-flow guide portion 1122 and the opening / closing plate 15 form the second cavity 104, with the second sub-flow guide portion 1122 inclined forward relative to the first sub-flow guide portion 1121, and the dimension of the first cavity 103 along the vertical direction y is greater than the dimension of the second cavity 104 along the vertical direction y, allowing for space free from interference from the flange structure 131 of the housing 13. The size of the guide cavity 101 is maximized to the front, thereby reducing the risk of oil fume escape and improving the range hood's suction effect on external oil fumes. This design also minimizes the distance between the second guide section 112 and the opening and closing plate 15, reducing the overall size of the machine. Furthermore, when a sealing structure is provided between the opening and closing plate 15 and the second guide section 112 to prevent the escaped oil fume airflow from entering the slit between the opening and closing plate 15 and the second guide section 112, the vertical dimension of the second cavity 104 is smaller, which reduces the size of the sealing structure.

[0043] In some embodiments, the first sub-guide section 1121 and the second sub-guide section 1122 may be bent.

[0044] Specifically, in one application scenario, when the opening and closing plate 15 rotates open, the second guide portion 112 and the third guide portion 113 open along with the opening and closing plate 15, and the first sub-guide portion 1121 and the second sub-guide portion 1122 bend open, increasing the included angle between them; when the opening and closing plate 15 rotates closed, the second guide portion 112 and the third guide portion 113 close along with the opening and closing plate 15, and the first sub-guide portion 1121 and the second sub-guide portion 1122 bend relative to each other, decreasing the included angle between them. For example, the first sub-guide portion 1121 and the second sub-guide portion 1122 can be smoothly connected through an injection molding process.

[0045] In some embodiments, the first sub-guide section 1121 and the second sub-guide section 1122 are arranged in the form of flat plates.

[0046] Specifically, the first sub-guide section 1121 and the second sub-guide section 1122 are parallel and located in the same plane. For example, the first sub-guide section 1121 and the second sub-guide section 1122 are integrally formed flat plate structures. The flat plate is arranged facing forward and tilted downward, which can improve the smoothness of oil flowing from the first sub-guide section 1121 to the second sub-guide section 1122 and facilitate the downward guidance of oil.

[0047] In one application scenario, the first sub-guide section 1121 and the second sub-guide section 1122 are bendable, with the second sub-guide section 1122 extending towards and downwards relative to the first sub-guide section 1121, or the second sub-guide section 1122 and the first sub-guide section 1121 being arranged as a flat plate. Specifically, the included angle of the first sub-guide section 1121 and the second sub-guide section 1122 is different in different bending states. This arrangement allows the first sub-guide section 1121 and the second sub-guide section 1122 to rotate with the opening and closing of the opening and closing plate 15, and facilitates the diversion of oil.

[0048] In some embodiments, see Figure 5 , Figure 6 The two ends of the first guide section 111 extend to the inner wall of the left end of the flange 14 and the inner wall of the right end of the flange 14, respectively.

[0049] The above settings can further reduce the risk of oil dripping from the air inlet 102. Figure 6 for Figure 5The enlarged structural diagram of region B in embodiment shows an implementation in which one end of the first flow guide 111 extends to the inner wall of the left end of the flange 14. Specifically, the front end 141 of the flange 14 is connected to the left end and the right end of the flange 14, respectively. Therefore, by providing both ends of the first flow guide 111 to extend from the inner wall of the front end to the inner wall of the left end and the inner wall of the right end, respectively, and abutting against the inner walls of the left end and the right end, the bottom of the front end 141 of the flange 14 can be completely surrounded by the side of the first flow guide 111 away from the flow guide cavity 101. This improves the flow guiding effect and reduces the risk of oil accumulating and dripping from the bottom of the front end 141 of the flange 14.

[0050] In some embodiments, see Figure 2 , Figure 7 The opening and closing plate 15 covers the side of the second guide portion 112 opposite to the guide cavity 101. Extensions 1120 protrude from both side walls of the second guide portion 112 toward the opening and closing plate 15, and the extensions 1120 abut against the opening and closing plate 15. (See reference...) Figure 4 The range hood also includes a first seal 16, which is located between the opening and closing plate 15 and the end of the second guide portion 112 that connects to the third guide portion 113; the first seal 16 extends from one of the two side walls to the other.

[0051] The above-mentioned arrangement can improve the sealing effect between the opening and closing plate 15 and the second guide portion 112, and reduce the risk of oil fumes escaping into the slit between the opening and closing plate 15 and the second guide portion 112, causing oil to accumulate in the slit. Specifically, one end of the second guide portion 112 is connected to the first guide portion 111, and the other end is connected to the second guide portion 112, extending in a plate shape. The two side walls of the second guide portion 112 protrude toward the opening and closing plate 15 in the direction away from the guide cavity 101 to form extension portions 1120. The extension portions 1120 abut against the opening and closing plate 15 to seal the two openings of the slit. Further, the first sealing member 16 is disposed between the opening and closing plate 15 and the end of the second guide portion 112 that connects to the third guide portion 113, and extends from one of the two side walls of the second guide portion 112 to the other, that is, it can seal the front opening of the slit, that is, the side of the slit near the third guide portion 113. Since the oil fume airflow enters the guide cavity 101 through the air inlet 102 on the third guide section 113, the escaping oil fume can easily enter the slit between the opening plate 15 and the second guide section 112 from the front opening and the side openings of the slit. Therefore, the above arrangement can effectively prevent the oil fume airflow from entering the slit and reduce the accumulation of oil stains in the slit.

[0052] In some application scenarios, refer to Figure 2 , Figure 7The extension 1120 can also be formed by two side plates of the range hood. The two side plates are connected to both sides of the guide plate 11 and abut against the opening and closing plate 15 to achieve the sealing of the guide cavity 101 and the above-mentioned slit.

[0053] In some embodiments, see Figure 4 The range hood also includes a second seal 17, which is disposed between the first guide portion 111 and the inner wall of the front end portion 141 of the flange 14, and the two ends of the second seal 17 extend to the inner wall of the left end portion of the flange 14 and the inner wall of the right end face of the flange 14, respectively.

[0054] The above-mentioned arrangement improves the sealing between flange 14 and the first guide section 111, reducing the risk of oil leakage from the flange 14 and the first guide section 111 to the side of the first guide section 111 away from the guide cavity 101. When the range hood is equipped with the opening and closing plate 15, the structure of the second sealing member 17 reduces the flow of oil from the flange 14 and the first guide section 111 into the narrow gap between the opening and closing plate 15 and the second guide section 112. Therefore, the above-mentioned arrangement allows the oil on the flange 14 to flow as far as possible through the side of the first guide section 111 closest to the guide cavity 101 to the second guide section 112, and then be smoothly guided into the oil cup 18 of the range hood.

[0055] In some embodiments, the second seal 17 is an elastic seal to adjust the distance between the first guide portion 111 and the inner wall of the front end portion 141 of the flange 14.

[0056] Specifically, in one application scenario, the end of the third guide section 113 opposite to the second guide section 112 is movably connected to the housing 13, for example, by rotation and sliding connection; the first guide section 111 and the inner wall of the front end 141 of the flange 14 can be movably sealed by the second seal 17; the opening and closing plate 15 is linked to the guide plate 11 so that when the opening and closing plate 15 is rotated open, the first guide section 111, the second guide section 112, and the third guide section 113 open with the opening and closing plate 15; when the opening and closing plate 15 is rotated closed, the first guide section 111, the second guide section 112, and the third guide section 113 close with the opening and closing plate 15.

[0057] In some embodiments, the first guide portion 111 and the second guide portion 112 are bendable.

[0058] Specifically, in one application scenario, when the opening and closing plate 15 rotates open, the second guide portion 112 and the third guide portion 113 open along with the opening and closing plate 15; when the opening and closing plate 15 rotates closed, the second guide portion 112 and the third guide portion 113 close along with the opening and closing plate 15. The first guide portion 111 maintains a stable relative position with the flange 14, and the first guide portion 111 and the second guide portion 112 are connected by a sealed movable connection to achieve bendability. For example, the first guide portion 111 and the second guide portion 112 can be smoothly connected through an injection molding process.

[0059] In some embodiments, see Figure 2 Two air inlets 102, one on the left and one on the right, are provided on the baffle plate 11 to increase the air volume and improve the suction efficiency.

[0060] In some embodiments, see Figure 2 The fan assembly 12 includes a cover 121, a frame 122, and a fan 123. The frame 122 forms an air duct cavity 105, and the fan 123 is disposed in the air duct cavity 105. The flange 14 is connected to the frame 122.

[0061] In some embodiments, see Figure 2 The range hood also includes an oil cup 18 for collecting oil stains, which is located below the housing 13 and may be configured to communicate with the flow guide cavity 101.

[0062] In some embodiments, see Figure 2 The range hood also includes a lower panel 19, which is located at the front end of the bottom of the housing 13 to enhance the strength of the housing 13 and improve its aesthetics. In some embodiments, the hinged panel 15 is a glass panel, which can improve aesthetics and ease of cleaning.

[0063] In one application scenario, the lower panel 19 is a glass plate. When the hinged panel 15 is closed, the lower panel 19 and the hinged panel 15 are joined together, improving the aesthetics.

[0064] In some embodiments, the range hood further includes a drive assembly for driving the opening and closing plate to achieve automatic opening and closing; in other embodiments, the opening and closing plate can also be manually controlled.

[0065] This application further proposes a deflector 11, such as Figures 1 to 11As shown. The guide plate 11 includes a first guide section 111, a second guide section 112, and a third guide section 113 connected in sequence. The first guide section 111 is configured to be connected to the inner wall of the front end 141 of the flange 14; the second guide section 112 is smoothly connected to the first guide section 111; the third guide section 113 is provided with an air inlet 102; wherein, the second guide section 112 is located below the first guide section 111 and above the third guide section 113, and the second guide section 112 is inclined forward relative to the first guide section 111.

[0066] The specific implementation method and working principle of the guide plate 11 can be found in the above embodiments, and will not be repeated here.

[0067] Unlike existing technologies, the baffle plate of this application is used in a range hood. The range hood includes a fan assembly, a housing, a flange connecting the fan assembly and the housing, and a baffle plate disposed on the front end face of the housing. The housing and the baffle plate surround to form a baffle cavity. The baffle plate includes a first baffle section, a second baffle section, and a third baffle section connected in sequence. The first baffle section is configured to be connected to the inner wall of the front end of the flange. The second baffle section is smoothly connected to the first baffle section. The third baffle section is provided with an air inlet. The second baffle section is located below the first baffle section and above the third baffle section. The second baffle section is inclined forward relative to the first baffle section. Through the above method, the oil fume airflow can be guided by the first, second, and third guide sections, reducing the flow resistance at the front end of the guide cavity, increasing the airflow rate, and improving the oil fume extraction efficiency of the range hood. Furthermore, the first guide section is located on the inner wall of the front end of the flange, and the second guide section is smoothly connected to the first guide section and inclined forward. This can guide the oil stains adhering to the inner wall of the flange from the inner wall of the first guide section to the inner wall of the second guide section, reducing the risk that the oil stains adhering to the inner wall of the flange will accumulate at the bottom of the front end of the flange under the action of gravity and drip through the air inlet. Therefore, the risk of oil dripping from the air inlet can be reduced, improving the user experience.

[0068] It is worth noting that the accompanying drawings are only for illustrating the structural and connection relationships of the product in this application, and do not limit the specific structural dimensions of the product in this application.

[0069] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A deflector plate, characterized in that, For use in a range hood, the range hood includes a fan assembly, a housing, a flange connecting the fan assembly and the housing, and a guide plate disposed on the front end face of the housing. The housing and the guide plate enclose a guide cavity, and the guide plate includes components connected in sequence: The first flow guide is configured to be connected to the inner wall of the front end of the flange; The second flow guide is smoothly connected to the first flow guide; The third air intake section is equipped with an air inlet. The second guide section is located below the first guide section and above the third guide section, and the second guide section is inclined forward relative to the first guide section.

2. The guide vane according to claim 1, characterized in that, The angle between the side of the first guide portion facing the front end of the flange and the side of the second guide portion away from the guide cavity is α, where 110°≤α<180°.

3. The guide vane according to claim 1, characterized in that, The first guide portion and the second guide portion are integrally formed, and a smooth portion is formed at the connection between the two. The radius of curvature of the smooth portion is R, and R≥2mm.

4. The guide plate according to claim 1, wherein the range hood further comprises a hinged plate disposed on the front end face of the housing, the hinged plate covering the side of the second guide portion opposite to the guide cavity, characterized in that, The second guide section includes a first sub-guide section connected to the first guide section and a second sub-guide section connected to both the first sub-guide section and the third guide section; In a vertical plane, the second sub-guide portion is arranged forward and downward relative to the first sub-guide portion to form a first cavity before the first sub-guide portion and the opening and closing plate, and to form a second cavity between the second sub-guide portion and the opening and closing plate; wherein the vertical dimension of the first cavity is greater than the vertical dimension of the second cavity.

5. The guide vane according to claim 4, characterized in that, The first sub-guide section and the second sub-guide section are bendable.

6. A range hood, characterized in that, The range hood includes: Wind turbine components; Box; Flange, connecting the fan assembly and the housing; The guide plate according to any one of claims 1 to 4 is disposed on the front end face of the housing, and the housing and the guide plate surround to form a guide cavity.

7. The range hood according to claim 6, characterized in that, The range hood also includes: An opening and closing plate is located on the side of the guide plate away from the guide cavity and is linked with the guide plate.

8. The range hood according to claim 6, characterized in that, The two ends of the first guide portion extend to the inner wall of the left end of the flange and the inner wall of the right end of the flange, respectively.

9. The range hood according to claim 7, characterized in that, The opening and closing plate covers the side of the second flow guide portion away from the flow guide cavity. Extensions protrude from both side walls of the second flow guide portion toward the opening and closing plate, and these extensions abut against the opening and closing plate. The range hood also includes: A first seal is disposed between the opening and closing plate and the end of the second flow guide that connects to the third flow guide; the first seal extends from one of the two side walls to the other.

10. The range hood according to claim 6, characterized in that, The range hood also includes: The second seal is disposed between the first flow guide portion and the inner wall of the front end of the flange, and the two ends of the second seal extend to the inner wall of the left end of the flange and the inner wall of the right end face of the flange, respectively.

11. The range hood according to claim 10, characterized in that, The second seal is an elastic seal, used to adjust the distance between the first guide portion and the inner wall of the front end of the flange.

12. The range hood according to claim 7, characterized in that, The first and second guide sections are bendable.

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