Range hood

Abstract

The present invention provides a range hood (100). The range hood (100) includes an upper housing assembly (1), an air inlet body (2), a functional module (15), and a smoke baffle (3). The air inlet body (2) is provided with an air inlet (21). When the air inlet body (2) is in the first state, the air inlet body (2) is pivoted upward to be at least partially located inside the upper housing assembly (1), and the smoke baffle (3) is rotated rearward to a horizontal position to close the air inlet and entirely located behind the functional module (15). When the air inlet body (2) is in the second state, the air inlet body (2) is pivoted downward to be at least partially located below the bottom of the upper housing assembly (1). The smoke baffle (3) is rotated forward to open the air inlet (21) and entirely located in front of the functional module (15). The Most Illustrative Drawing: Figure 1

Description

A type of range hood

[0001] Related applications

[0002] This application claims priority to the following Chinese patent applications filed on January 13, 2025, with application number 202510049393.3, entitled "A Range Hood"; the following Chinese patent applications filed on January 13, 2025, with application number 202510702609.1, entitled "A Range Hood"; the following Chinese patent applications filed on January 13, 2025, with application number 202510702608.7, entitled "A Range Hood"; the following Chinese patent applications filed on May 28, 2025, with application number 202510702610.4, entitled "A Range Hood"; and the following Chinese patent applications filed on May 28, 2025, with application number 202510702569.0, entitled "A Range Hood", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0004] Chinese cooking produces a large amount of oil fumes. To maintain a clean kitchen environment and protect human health, range hoods have become an indispensable appliance in modern family kitchens. However, as the usage rate of range hoods increases, people are paying more and more attention to their fume extraction efficiency. If the distance between the range hood's air inlet and the area where the fumes are generated is large, the extraction path of the fumes is longer, increasing the extraction time and making it easier for fumes to escape during cooking. Lowering the installation height of the range hood and bringing the inlet as close to the smoke source as possible, while expanding the negative pressure downwards, can improve the fume extraction effect, but it will result in a smaller cooking space, making it easier for the cook's head to accidentally hit the fume hood. Furthermore, a lower installation height also affects visibility and the overall appearance of the kitchen. Therefore, the lift-type range hood was invented, where the inlet can be raised and lowered; it lowers when the hood is on and rises when the hood is off. However, since traditional range hoods do not have lighting installed on the lower casing, the smoke baffles of these range hoods do not need to consider the problem of the lighting being blocked when opening and closing. But now more and more range hoods are equipped with lighting and other functional modules on the lower casing. Therefore, it is necessary to solve the problem of how to ensure that the smoke baffles do not block the lighting when they are flipped. Summary of the Invention

[0005] Based on this, this application provides a range hood.

[0006] This application provides a range hood, including an upper housing assembly, an air inlet, a functional module, and a smoke baffle. The air inlet has an air inlet and is located at the bottom of the upper housing assembly, capable of flipping relative to the upper housing assembly. The functional module is located at the bottom front side of the upper housing assembly. The smoke baffle is located at the bottom of the upper housing assembly and can move synchronously with the air inlet. The air inlet has a first state and a second state. In the first state, the air inlet flips upward so that at least part of it is inside the upper housing assembly, and the smoke baffle flips backward to a horizontal position to close the air inlet, and is located entirely behind the functional module. In the second state, the air inlet flips downward so that at least part of it is below the bottom of the upper housing assembly; the smoke baffle flips forward to open the air inlet, and is located entirely in front of the functional module.

[0007] In one embodiment, the functional module is configured as a lighting lamp.

[0008] In one embodiment, a decorative panel is installed on the bottom front side of the upper housing assembly. The decorative panel is elongated and horizontally arranged. The functional module is installed on the decorative panel and horizontally arranged. In the first state, the smoke baffle is located on the rear side of the decorative panel and is flush with the decorative panel. In the second state, the rear edge of the smoke baffle is located between the front edge of the functional module and the front edge of the decorative panel.

[0009] In one embodiment, when switching from the first state to the second state, the maximum opening angle of the smoke baffle is defined as β, where β satisfies 120°≤β≤150°.

[0010] In one embodiment, the lower part of the upper housing assembly has a rear plate, the front side of the rear plate is provided with an oil guide plate, a portion of the rear plate is recessed to form a first receiving cavity, a second receiving cavity is formed below the oil guide plate, the air inlet includes an air inlet rear plate and an oil filter plate disposed on the front side of the air inlet rear plate; in the second state, the air inlet rear plate is flipped downward to extend out of the first receiving cavity, and the oil filter plate is flipped downward to extend out of the second receiving cavity; in the first state, the air inlet rear plate is flipped upward into the first receiving cavity, and the oil filter plate is flipped upward into the second receiving cavity.

[0011] In one embodiment, the range hood further includes a fan installed inside the upper housing assembly, and the oil guide plate is located below the fan; and / or, the air inlet is driven by a drive mechanism installed in the upper housing assembly, the drive output end of the drive mechanism extending downward into the first receiving cavity and rotatably connected to the rear plate of the air inlet.

[0012] In one embodiment, the air inlet is directly or indirectly rotatably connected to the upper housing assembly, and the center of the rotatable connection is denoted as the first rotatable connection point, which can rotate around a center point located within the upper housing assembly.

[0013] In one embodiment, a guide groove centered at the center point is formed inside the upper housing assembly, and the first rotating connection point can slide along the guide groove.

[0014] In one embodiment, the range hood further includes a motion mechanism for driving the air inlet and the smoke baffle to work together. The motion mechanism includes a drive mechanism and a transmission mechanism. The drive mechanism directly drives the air inlet or indirectly drives the air inlet through the transmission mechanism.

[0015] In one embodiment, the drive mechanism is configured as an electric push rod: the upper drive connection end of the drive mechanism is rotatably connected to the upper housing assembly, and the lower drive output end of the drive mechanism is rotatably connected to the air inlet; or, the upper drive connection end of the drive mechanism is fixedly connected to the upper housing assembly, and the lower drive output end of the drive mechanism is provided with a horizontally extending groove along the front-back direction of the range hood, the air inlet slides with the groove and can rotate relative to the groove.

[0016] In one embodiment, the transmission mechanism includes a rod, one end of which is rotatably connected to the upper housing assembly, and the center of the rotatable connection coincides with the center point, which serves as the second rotatable connection point.

[0017] In one embodiment, the smoke baffle is directly or indirectly fixedly connected to the rod; and / or, the rod is configured as a crank.

[0018] In one embodiment, the transmission mechanism further includes at least two connecting rods, and the upper housing assembly is also provided with a third rotating connection point. The rod and the third rotating connection point are connected by the at least two connecting rods that are rotatably connected end to end, and one of the at least two connecting rods is movably connected to the air inlet body.

[0019] In one embodiment, the at least two links include a rocker arm and a first link; one end of the rocker arm is rotatably connected to the upper housing assembly through the third rotational connection point, the other end of the rocker arm is rotatably connected to the first link and the center of the rotational connection point is denoted as the fourth rotational connection point, the first link is rotatably connected to the rod and the center of the rotational connection point is denoted as the fifth rotational connection point, and the first rotational connection point is located between the fifth rotational connection point and the second rotational connection point.

[0020] In one embodiment, in the second state, the fifth rotating connection point is located behind the second rotating connection point.

[0021] In one embodiment, the line connecting the fifth rotating connection point and the second rotating connection point is a third straight line, and the angle between the third straight line and the horizontal direction is defined as α. When the air inlet body switches between the first state and the second state, α satisfies the following relationship: 20°<α≤180°.

[0022] In one embodiment, the line connecting the third rotational connection point and the fourth rotational connection point is a first straight line, the line connecting the fourth rotational connection point and the fifth rotational connection point is a second straight line, and the line connecting the fifth rotational connection point and the second rotational connection point is a third straight line. The lengths of each line satisfy the following relationship: first straight line > second straight line > third straight line.

[0023] In one embodiment, the line connecting the fifth rotational connection point and the first rotational connection point is a fourth straight line, and the line connecting the first rotational connection point and the second rotational connection point is a fifth straight line. The lengths of the connecting lines satisfy the following relationship: the fourth straight line > the fifth straight line.

[0024] In one embodiment, the rear end of the air inlet is provided with a sixth rotating connection point, and the air inlet is rotatably connected to the rocker or the first connecting rod through the sixth rotating connection point.

[0025] In one embodiment, the at least two links further include a second link, and the air inlet is rotatably connected to the rocker arm through the second link, with the center of the rotatable connection point designated as the seventh rotatable connection point.

[0026] In one embodiment, the line connecting the third rotational connection point and the seventh rotational connection point is the sixth straight line, the line connecting the seventh rotational connection point and the fourth rotational connection point is the seventh straight line, and the line connecting the seventh rotational connection point and the sixth rotational connection point is the eighth straight line. The lengths of each line satisfy the following relationship: 2*seventh straight line <sixth straight line <4*seventh straight line, seventh straight line <eighth straight line <3*seventh straight line.

[0027] In one embodiment, the drive mechanism is connected to the air inlet body, and the transmission mechanism has two sets, which are respectively corresponding to the left and right sides of the air inlet body.

[0028] In one embodiment, a connecting rod extending along the front-rear direction of the range hood is fixed to the air inlet body, and the front end of the connecting rod is rotatably connected to the rod member through the first rotatable connection point.

[0029] In one embodiment, side baffles are respectively provided on the left and right sides of the air inlet body, and the front end portions of the side baffles are connected to the connecting rod.

[0030] In one embodiment, the driving mechanism is an electric push rod or a motor for driving the rocker or the rod to rotate.

[0031] In one embodiment, there is a gap between the center point and the front end portion of the upper box body assembly.

[0032] In one embodiment, the air inlet is formed on the front surface of the air inlet body, and in the second state, at least a part of the air inlet is exposed from the upper box body assembly.

[0033] In one embodiment, in the second state, the smoke baffle flips to open the air inlet so as to form a smoke gathering cavity between the smoke baffle and the front surface of the air inlet body.

[0034] In one embodiment, each rotational connection is a hinge connection, and each rotational connection point is a hinge point.

[0035] In one embodiment, the air inlet body is directly or indirectly rotationally connected to the upper box body assembly, and the center of the rotational connection is the first rotational connection point. When the air inlet body is in the first state, the position of the first rotational connection point corresponds to the first position point. When the air inlet body is in the second state, the position of the first rotational connection point corresponds to the second position point; the second position point is located behind the first position point, and the distance between the projections of the second position point and the first position point on the horizontal plane is L. In a vertical section extending in the front-back direction of the range hood, the rear end contour line of the air inlet body has a first end point and a second end point. In the first state, the first end point is located inside the upper box body assembly. In the second state, the first end point is a point flush with the bottom surface of the upper box body assembly, and the second end point is the lowest point; the distance between the first end point and the first rotational connection point is L1, and the distance between the second end point and the first rotational connection point is L2, and it satisfies L < L2 - L1 < L + Δ, where Δ is a constant.

[0036] In one embodiment, it further includes an oil cup provided at the rear bottom of the air inlet body. There is also a first intermediate point on the rear end contour line of the air inlet body between the first end point and the second end point. In the second state, the first intermediate point is located behind the second end point.

[0037] In one embodiment, in the second state, the rear side of the oil cup and the first intermediate point are on the same vertical plane.

[0038] In one embodiment, the outline formed by the line connecting the first midpoint and the second endpoint is a straight line or a curve.

[0039] In one embodiment, the first rotatable connection point is rotatable about a center point located within the upper housing assembly.

[0040] In one embodiment, the first rotating connection point is located on the front side of the air inlet, and the line connecting the first endpoint and the first midpoint is an arc, the radius of which is the distance between the first rotating connection point and the first midpoint.

[0041] In one embodiment, the line connecting the first endpoint and the first intermediate point is a broken line segment, and the bend point of the broken line segment is the second intermediate point.

[0042] In one embodiment, the second intermediate point is the intersection of the perpendicular bisector of the first endpoint and the first intermediate point with an arc, the radius of which is the distance between the first rotating connection point and the first intermediate point.

[0043] In one embodiment, the range hood further includes a first connecting rod, one end of which is rotatably connected to the upper housing assembly, and the center of the rotatable connection is a second rotatable connection point, which coincides with the center point.

[0044] In one embodiment, the line connecting the first endpoint and the first intermediate point is a straight line, and in the second state, the line connecting the first endpoint and the first intermediate point is vertical.

[0045] In one embodiment, the range hood further includes an oil cup disposed at the rear bottom of the air inlet body; the transmission mechanism includes a transmission rod, one end of which is fixed to the oil cup, and the other end of which is slidably connected to the upper housing assembly. The transmission rod is also rotatably connected to the air inlet body, so that the oil cup remains in the up-down orientation.

[0046] In one embodiment, the upper housing assembly includes a slide rail, and the end of the transmission rod is provided with a slider, which slides in cooperation with the slide rail.

[0047] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0048] To better describe and illustrate embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more accompanying drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the currently described embodiments and / or examples, or the best mode of these inventions as currently understood.

[0049] Figure 1 is a structural schematic diagram of a range hood according to an embodiment of this application.

[0050] Figure 2 is a structural schematic diagram of the range hood in Figure 1 from another angle.

[0051] Figure 3 is a cross-sectional view of the range hood in Figure 1.

[0052] Figure 4 is a schematic diagram of the internal structure of the range hood in Figure 1.

[0053] Figure 5 is a schematic diagram of the transmission mechanism and rod connection structure of the range hood in Figure 1.

[0054] Figure 6 is a schematic diagram of the structure of the air inlet body according to an embodiment of this application.

[0055] Figure 7 is a structural schematic diagram of a range hood according to an embodiment of this application.

[0056] Figure 8 is a structural schematic diagram of the range hood in Figure 7 from another angle.

[0057] Figure 9 is a cross-sectional view of the range hood in Figure 7.

[0058] Figure 10 is another structural cross-sectional view of the range hood in Figure 7.

[0059] Figure 11 is a schematic diagram of the internal structure of the range hood in Figure 7.

[0060] Figure 12 is a schematic diagram of the transmission mechanism and rod connection structure of the range hood in Figure 7.

[0061] Figure 13 is a schematic diagram of the open state of a range hood according to an embodiment of this application.

[0062] Figure 14 is a schematic diagram of the range hood in the open state according to an embodiment of this application.

[0063] Figure 15 is a cross-sectional view of a range hood in the open state according to an embodiment of this application.

[0064] Figure 16 is a cross-sectional view of a range hood in the open state according to an embodiment of this application.

[0065] Figure 17 is a schematic diagram of the transmission mechanism of the motion mechanism of a range hood according to an embodiment of this application.

[0066] Figure 18 is a schematic diagram of the closed state of a range hood according to an embodiment of this application.

[0067] Figure 19 is a cross-sectional view of a range hood in the closed state according to an embodiment of this application.

[0068] Figure 20 is a cross-sectional view of the hidden portion of a range hood in the open state according to an embodiment of this application.

[0069] Figure 21 is a partial cross-sectional view of a range hood in the closed state according to an embodiment of this application.

[0070] Figure 22 is a schematic diagram of the transmission mechanism and slide rail of the motion mechanism of a range hood according to an embodiment of this application.

[0071] Figure 23 is a schematic diagram of the cooperation between the drive mechanism and the air inlet of a range hood according to an embodiment of this application.

[0072] Figure 24 is a cross-sectional view of a range hood according to an embodiment of this application.

[0073] Reference numerals: 100, Range hood; 1, Upper housing assembly; 11, Outer housing; 111, Rear panel; 12, Fan frame; 13, Side panel; 14, Decorative panel; 131, Slide rail; 15, Functional module; 151, Lighting; 16, Guide groove; 17, Oil guide plate; 18, First receiving cavity; 19, Second receiving cavity; 2, Air inlet; 21, Air inlet; 22, Rear panel of air inlet; 23, Oil filter plate; 24, Side baffle; 3, Smoke baffle; 4, Oil cup; 5, Motion mechanism; 51, Drive mechanism; 511, Slide groove; 52, Transmission. Mechanism; 521, First connecting rod; 522, Connecting rod; 523, Second connecting rod; 524, Transmission rod; 525, Rod; 526, Rocker arm; 527, Slider; 6, Fan; G, First rotating connection point; D, Second rotating connection point; A, Third rotating connection point; B, Fourth rotating connection point; C, Fifth rotating connection point; F, Sixth rotating connection point; E, Seventh rotating connection point; H, First end point; I, Second end point; J, First intermediate point; K, Second intermediate point; O', First position point; O, Second position point; Q, Smoke collection chamber. Detailed Implementation

[0074] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0075] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0076] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is 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 can mean that the first feature is 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.

[0078] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0079] Chinese cooking produces a large amount of oil fumes. To maintain a clean kitchen environment and protect human health, range hoods have become an indispensable appliance in modern family kitchens. However, as the usage rate of range hoods increases, people are paying more and more attention to their fume extraction efficiency. If the distance between the range hood's air inlet and the area where the fumes are generated is large, the extraction path of the fumes is longer, increasing the extraction time and making it easier for fumes to escape during cooking. Lowering the installation height of the range hood and bringing the inlet as close to the smoke source as possible, while expanding the negative pressure downwards, can improve the fume extraction effect, but it will result in a smaller cooking space, making it easier for the cook's head to accidentally hit the fume hood. Furthermore, a lower installation height also affects visibility and the overall appearance of the kitchen. To address this, lift-type range hoods (such as patent CN 221403155U) have been invented, where the inlet can be raised and lowered; it lowers when the hood is on and rises when the hood is off. However, since traditional range hoods do not have lighting installed on the lower casing, the smoke baffles of these range hoods do not need to consider the problem of the lighting being blocked when opening and closing. But now more and more range hoods are equipped with lighting and other functional modules on the lower casing. Therefore, it is necessary to solve the problem of how to ensure that the smoke baffles do not block the lighting when they are flipped.

[0080] Therefore, this application provides a range hood 100, as shown in Figures 1 to 24. The range hood 100 includes an upper housing assembly 1 and an air inlet 2. The air inlet 2 is installed at the bottom of the upper housing assembly 1 and has an air inlet 21. A fan 6 is installed inside the upper housing assembly 1. When the range hood 100 is working, the fumes are drawn in from the air inlet 21 and then discharged to the outside through the fan 6.

[0081] Referring to Figures 1 to 12, in one embodiment, a lighting lamp 151 is installed on the bottom front side of the upper housing assembly 1. Specifically, a decorative panel 14 is installed on the bottom front side of the upper housing assembly 1. The decorative panel 14 is elongated and horizontally arranged, and the lighting lamp 151 is installed on the decorative panel 14 and horizontally arranged. A smoke baffle 3 is installed at the bottom of the upper housing assembly 1. Driven by the drive mechanism 51, the smoke baffle 3 can move synchronously with the air inlet 2. In the off state, the air inlet 2 flips upward into the interior of the upper housing assembly 1, and the smoke baffle 3 flips backward to a horizontal position and closes the air inlet 21. At this time, the smoke baffle 3 is closed. The smoke baffle 3 is located behind the decorative panel 14 and is flush with the decorative panel 14. That is, the smoke baffle 3 is located entirely behind the lighting lamp 151 and will not obstruct the lighting lamp 151. When the range hood 100 is working, the air inlet 2 flips downward and extends out of the upper housing assembly 1, and the smoke baffle 3 flips forward and opens the air inlet 21. At this time, the smoke baffle 3 is open, and the rear edge of the smoke baffle 3 is located between the front edge of the lighting lamp 151 and the front edge of the decorative panel 14. That is, the smoke baffle 3 is located on the front side of the lighting lamp 151 and will not obstruct the lighting lamp 151.

[0082] The maximum opening angle of the smoke baffle 3 is defined as β, which is determined by flipping from the closed air inlet 21 state to the open air inlet 21 state. β satisfies 120°≤β≤150°. With a fixed width of the smoke baffle 3, increasing the width of the decorative panel 14 can ensure a wider front and rear smoke collection width.

[0083] Furthermore, the direction of the range hood 100 from back to front can be seen in the Y direction in Figure 3.

[0084] The smoke baffle 3 has an open state and a closed state. When the air inlet 2 is in the second state, the smoke baffle 3 is in the open state, and a smoke collection chamber Q is formed between the smoke baffle 3 and the front side of the air inlet 2, which realizes the downward movement of the air inlet 21 and the increase of the smoke collection area, ensuring a better oil fume extraction effect in the working state.

[0085] In this embodiment, the lower part of the upper housing assembly 1 has a rear plate 111, and an oil guide plate 17 is provided on the front side of the rear plate 111. The oil guide plate 17 is located below the fan 6. A first receiving cavity 18 is formed by a recess in part of the rear plate 111, and a second receiving cavity 19 is formed below the oil guide plate 17. The air inlet 2 includes an air inlet rear plate 22 and an oil filter plate 23 located on the front side of the air inlet rear plate 22. The oil filter plate 23 is located below the oil guide plate 17. When the machine is turned off, the air inlet 2 flips down, the air inlet rear plate 22 flips down and extends out of the first receiving cavity 18, and the oil filter plate 23 flips down and extends out of the second receiving cavity 19. At this time, the tilt angle of the oil filter plate 23 relative to the horizontal plane is greater than the tilt angle of the oil guide plate 17 relative to the horizontal plane. The larger the tilt angle of the oil filter plate 23, the larger the smoke collection cavity Q, and the better the oil fume absorption effect. During operation, the air inlet 2 flips up, the rear plate 22 of the air inlet flips up into the first receiving cavity 18, and the oil filter plate 23 flips up into the second receiving cavity 19. The oil filter plate 23 is close to the oil guide plate 17. The range hood 100 is small in size and has a more compact and simple structure.

[0086] Furthermore, the range hood 100 also includes an oil cup 4, which is located at the bottom rear side of the air inlet 2. The oil guide plate 17 can guide oil stains into the oil cup 4.

[0087] Referring to Figure 1 or Figure 13, in some embodiments, the upper housing assembly 1 includes an outer housing 11 and a fan frame 12 connected to the outer housing 11. The lower end of the fan frame 12 may be partially located inside the outer housing 11, and the fan frame 12 is used to house the fan 6.

[0088] The upper housing assembly 1 can be installed inside the kitchen cabinet. Since the width of the fan frame 12 usually needs to be compatible with the width of the fan 6, the fan frame 12 does not need to be large. However, the air inlet 2 needs to be larger to accommodate a standard household double burner. For these reasons, the upper housing assembly 1 is divided into an outer housing 11 and a fan frame 12. If the optimization of air intake efficiency is not considered, an integrated upper housing assembly 1 can also be used.

[0089] The air inlet 2 is movable relative to the upper housing assembly 1, forming an air inlet 21 on its front. When the air inlet 2 is in the second state, the air inlet 2 is at least partially below the upper housing assembly 1 and exposed above it, ensuring that the air inlet 21 is below the bottom of the upper housing assembly 1 and exposed above it. The "front" of the air inlet 2 mentioned above refers to the side of the air inlet 2 facing the user when it is in the second state.

[0090] Alternatively, the air inlet 2 can also be a plate. In the second state, the air inlet 2 is at least partially located below the upper housing assembly 1, so that the fumes can rise around the periphery of the air inlet 2 and enter the interior of the upper housing assembly 1 through the opening at the bottom of the upper housing assembly 1 (which is required to accommodate at least part of the air inlet 2).

[0091] Referring to Figures 1-12 or 13-19, in some embodiments, the smoke baffle 3 is specifically installed at the bottom of the outer casing 11. The rear plate 111 is the back plate of the outer casing 11. Referring to Figures 18 and 19, when the air inlet 2 is in the first state, the smoke baffle 3 is in the closed state. The smoke baffle 3 is enclosed at the bottom of the outer casing 11, and it can extend in a roughly horizontal state and be flush with the bottom of the outer casing 11, achieving a completely flat closed state. At the same time, the air inlet 21 of the air inlet 2 is closed, and the overall size of the machine is reduced to the minimum.

[0092] Referring to Figure 2 or Figure 14, the range hood 100 further includes a motion mechanism 5, which comprises a drive mechanism 51 and a transmission mechanism 52. The drive mechanism 51 is mounted on the upper housing assembly 1, and its drive output end (lower end) is drively connected to the air inlet body 2, thereby driving the air inlet body 2 to move. In this embodiment, the drive connection end (upper end) of the drive mechanism 51 is rotatably connected to the upper housing assembly 1, and the lower end is directly rotatably connected to the air inlet body 2, thereby driving the air inlet body 2 to rotate relative to the upper housing assembly 1 in a non-fixed-axis manner, that is, to move along the front-back direction of the range hood 100 and to rotate about an axis extending in the left-right direction of the range hood 100. Furthermore, the output end of the drive mechanism 51 is rotatably connected to the rear bottom of the air inlet body 2.

[0093] The drive mechanism 51 can be an electric push rod, with its upper end installed inside the upper housing assembly 1, facilitating the use of a short-stroke push rod mechanism. However, this installation method results in the drive mechanism 51 being partially located within the fume duct of the range hood 100. To minimize the impact of the drive mechanism 51 on the performance of the range hood 100, it is not separately enclosed or isolated by a component. To prevent the impact of fumes on the reliability of the drive mechanism 51, the motor and push rod assembly of the drive mechanism 51 is sealed using a potting process. Furthermore, the drive output end of the drive mechanism 51 can pass through the rear side of the upper housing assembly 1 and connect to the air inlet 2 on the rear exterior side, further minimizing the impact of fumes on the drive mechanism 51.

[0094] Referring to Figure 9, in some embodiments, the drive output end of the drive mechanism 51 extends downward into the first receiving cavity 18 and is rotatably connected to the rear plate 22 of the air inlet.

[0095] Furthermore, the transmission mechanism 52 is used to control the movement trajectory of the air inlet 2 and to achieve linkage between the air inlet 2 and the smoke baffle 3, thereby enabling the air inlet 2 and the smoke baffle 3 to be linked through the same power source (drive mechanism 51). To ensure stable movement of the air inlet 2 and the smoke baffle 3 on both sides, the transmission mechanism 52 is provided in two sets, respectively arranged on the left and right sides inside the upper housing assembly 1 (when the air inlet 2 is in the second state, part of the transmission mechanism 52 is exposed), and each set of transmission mechanisms 52 connects the air inlet 2 and the smoke baffle 3. In this way, the left and right synchronization of the smoke baffle 3 is better, which can reduce the difference in load on both sides, thereby ensuring the synchronization of the rocker arms 526 and rods 525 on both sides.

[0096] Referring to Figures 1-12 or 13-19, each transmission mechanism 52 includes a rod 525, to which the smoke baffle 3 is directly or indirectly fixed. One end of the rod 525 is rotatably connected to the upper housing assembly 1, and the front end of the air inlet 2 is also rotatably connected to the rod 525. The center of the rotatable connection is denoted as the first rotatable connection point G (a rotatable connection point refers to any point on the axis of the rotatable connection shaft used for rotatable connection, the same below). The center of the rotatable connection between the rod 525 and the upper housing assembly 1 is denoted as the second rotatable connection point D. The second rotatable connection point D is the rotation center of the first rotatable connection point G, that is, the first rotatable connection point G can rotate around the second rotatable connection point D. The rod 525 facilitates high-precision control. By connecting the rods 525 alone, the linkage between the air inlet 2 and the smoke baffle 3 and the high-precision control of their movement trajectory can be achieved. It is especially suitable for applications where the movement trajectory of the air inlet 2 is irregular. The structure is simple and the cost is low. Furthermore, by connecting only the rod 525, a single power source can be used to achieve the linkage between the air inlet 2 and the smoke baffle 3, as well as high-precision control of their movement trajectory. This is particularly suitable for applications where the movement trajectory of the air inlet 2 is irregular, and the structure is simple and low-cost. In addition, since the smoke baffle 3 rotates relative to the upper housing assembly 1 (which is also a non-fixed-axis rotation), and the opening angle of the smoke baffle 3 usually needs to be greater than 90°, there is a gap between the center point (the second rotation connection point) and the front end of the upper housing assembly 1. This ensures that after the smoke baffle 3 is opened, the upper end of the smoke baffle 3 can be positioned below this gap without exceeding the bottom front end of the upper housing assembly 1, thus preventing smoke leakage from the upper end of the smoke baffle 3 and the upper housing assembly 1.

[0097] To control the movement trajectory of the air inlet 2, the upper housing assembly 1 is provided with a third rotating connection point A. Each transmission mechanism 52 also includes at least two connecting rods disposed between the third rotating connection point A and the rod 525, and one of the connecting rods is connected to the air inlet 2. The multiple connecting rods are connected end to end and are connected in a rotating manner.

[0098] The aforementioned at least two connecting rods are the first connecting rod 521 and the rocker arm 526 (the rocker arm 526 is also essentially a connecting rod). The upper housing assembly 1 serves as the frame for the entire transmission mechanism 52. One end of the rocker arm 526 is rotatably connected to the side plate 13 of the upper housing assembly 1. The side plate 13 extends along the front-rear direction of the range hood 100, and the center of the rotatable connection is the third rotatable connection point A, which is located on the top rear side of the side plate 13. The side plate 13 is adapted to the transmission mechanism 52, and there are two of them. It can be an independent component or part of the outer housing 11. The side plate 13 is located on the inner side of the left and right side walls of the outer housing 11.

[0099] Furthermore, the rod 525 can be a crank, with one end of the rod 525 rotatably connected to the bottom front side of the upper housing assembly 1, and the other end fixed to the smoke baffle 3. The crank design of the rod 525 facilitates the smoke baffle 3 to bypass fixed components (e.g., decorative panel 14 and functional module 15) during movement.

[0100] Each transmission mechanism 52 also includes at least one link connected between the rocker arm 526 and the second rotation connection point D, and at least one of the links is connected to the air inlet 2.

[0101] Referring to Figures 13-19, in this embodiment, there is one connecting rod between the rocker arm 526 and the second rotational connection point D, namely the first connecting rod 521. One end of the first connecting rod 521 is rotatably connected to the end of the rocker arm 526 away from the third rotational connection point A, and the center of the rotational connection is denoted as the fourth rotational connection point B. The other end of the first connecting rod 521 is rotatably connected to the rod 525, and the center of the rotational connection is denoted as the fifth rotational connection point C. The movement trajectory of the first connecting rod 521 is close to the movement trajectory of the air inlet 2. The first connecting rod 521 can be directly or indirectly connected to the air inlet 2. This connection can include a fixed connection and a movable connection. For example, the first connecting rod 521 can be fixed to the air inlet 2, or it can be rotatably connected to the air inlet 2 and slidably connected to the first connecting rod 521 through a connecting rod.

[0102] In this embodiment, the first connecting rod 521 is connected to the air inlet 2 via a rod 525. The first rotating connection point G is located between the fifth rotating connection point C and the second rotating connection point D, and the three rotating connection points do not coincide. This allows the air inlet 2 and the smoke baffle 3 to rotate in the same direction, achieving opening and closing in the same direction. When only the linkage between the air inlet 2 and the smoke baffle 3 is needed, the first rotating connection point G and the second rotating connection point D can also coincide.

[0103] To facilitate the connection between the air inlet body 2 and the rod 525, in this embodiment, the transmission mechanism 52 also includes a connecting rod 522, which is fixed to the air inlet body 2. The connecting rod 522 extends along the front-back direction of the range hood 100 and can be fixed to the bottom of the air inlet body 2. The front end of the connecting rod 522 is rotatably connected to the rod 525, while the rear end of the connecting rod 522 is close to the rear end of the air inlet body 2. The two connecting rods 522 can extend along the outside (left and right sides) of the air inlet 21 inside the air inlet body 2 and extend out of the air inlet body 2.

[0104] Specifically, the front end of the connecting rod 522 is hinged to the rod 525 through the first rotating connection point G, and the two connecting rods 522 are respectively connected to the side baffles 24 on the left and right sides of the air inlet body 2.

[0105] Furthermore, to ensure that the air inlet 2 has a unique degree of freedom, a second connecting rod 523 is provided between the air inlet 2 and the rocker arm 526. One end of the second connecting rod 523 is rotatably connected to the air inlet 2, and the center of the rotatable connection is denoted as the sixth rotatable connection point F. The other end of the second connecting rod 523 is rotatably connected to the rocker arm 526, and the center of the rotatable connection is denoted as the seventh rotatable connection point E. The seventh rotatable connection point E is located between the third rotatable connection point A and the fourth rotatable connection point B. Alternatively, the air inlet 2 can also be connected to a connecting rod located between the second rotatable connection point D of the rocker arm 526 and the rod 525.

[0106] Each of the aforementioned transmission mechanisms 52 includes a first connecting rod 521, a connecting rod 522, a second connecting rod 523, a rod 525, and a rocker arm 526. The rotation axes of all the aforementioned rotating connections extend approximately along the range hood 100. Furthermore, each of the aforementioned rotating connections is a hinge, and the rotating connection point is a hinge point.

[0107] Furthermore, the functional module 15 on the decorative panel 14 in this application can be a lighting lamp, or it can be a camera, a fume sensor, etc., which will not be listed here. Furthermore, the functional module 15 can be selected in form and arrangement according to its specific function. Furthermore, the decorative panel 14 can serve as the basic setting for the first rotating connection point G, and it is also convenient to serve as an installation base to expand the function of the range hood.

[0108] Furthermore, the second rotating connection point D can be located on the decorative panel 14, and there is a gap between the second rotating connection point D and the bottom front side of the upper housing assembly 1, that is, the second rotating connection point D is not located at the frontmost side of the entire upper housing assembly 1. In this way, the space in front of the center point can be utilized so that the first rotating connection point G can move to that position, thereby making this state the storage state of the air inlet 2, realizing the improvement of space utilization when storing, and also providing cooperation with the smoke baffle 3 when setting the smoke baffle 3, preventing the smoke baffle 3 from exceeding the front end of the upper housing assembly 1, thereby preventing the oil fumes from escaping.

[0109] When the air inlet 2 is in the first state, the first rotating connection point G is located in front of the second rotating connection point D, and the front end of the air inlet 2 is located above the decorative panel 14. The projections of the air inlet 2 and the functional module 15 on the horizontal plane at least partially overlap. In this way, the air inlet 2 and the functional module 15 share part of the space, thereby allowing the air inlet 2 to make full use of the space inside the upper housing assembly 1 for storage. The projection direction is shown by arrow Z in Figure 15. At this time, the smoke baffle 3 is located behind the decorative panel 14. When the air inlet 2 is in the second state, the first rotating connection point G is located behind the second rotating connection point D, and the front end of the air inlet 2 is located behind the decorative panel 14. At this time, the upper end of the smoke baffle 3 is located below the decorative panel 14 and in front of the functional module 15. The upper end of the smoke baffle 3 will not extend forward beyond the front end of the decorative panel 14.

[0110] Therefore, when the smoke baffle 3 is opened, it will not obstruct the functional module 15, ensuring that the functional module 15 functions normally. Furthermore, the smoke baffle 3 can utilize the decorative panel 14 to block smoke, preventing fumes from escaping. The opening and closing of the air inlet 2 also fully utilizes the area of ​​the decorative panel 14, further reducing the space occupied inside the upper housing assembly 1 during storage. Moreover, due to the position of the second rotating connection point D, when the smoke baffle 3 is opened, its upper end is below the decorative panel 14 without exceeding the bottom front side of the upper housing assembly 1, thus preventing fumes from leaking from the gap between it and the bottom front side of the upper housing assembly 1 in the front-to-back direction.

[0111] To avoid excessive movement of the air intake 2, minimizing the space required for its retraction and ensuring it doesn't overly encroach on cooking space when open, the range of motion of the smoke baffle 3 should be significantly greater than that of the air intake 2. This allows the smoke baffle 3 to close the bottom of the upper housing assembly 1 and to create a large smoke-gathering area when open. In this embodiment, the swing angle of the air intake 2 does not exceed 40°, while the smoke baffle 3 needs to open from its horizontal position (off) to approximately 30°–90° to the vertical. Therefore, the line connecting the third rotation connection point A and the fourth rotation connection point B is the first straight line AB (this connection must ensure that the third rotation connection point A and the fourth rotation connection point B are located on the same cross-section along the thickness direction of the rocker arm 526; the definition of the connection lines below follows the same). The line connecting the fourth rotation connection point B and the fifth rotation connection point C is the second straight line BC, and the line connecting the fifth rotation connection point C and the second rotation connection point D is the third straight line CD. The lengths of each line satisfy the following relationship: first straight line AB > second straight line BC > third straight line CD.

[0112] As mentioned above, the line connecting the fifth rotating connection point C and the second rotating connection point D is the third straight line CD. The angle between the third straight line CD and the horizontal direction is α, and it satisfies: 20°<α≤180°. The rod 525 moves within this range, which can meet the movement range requirements of the air inlet 2. The connection here must make the fifth rotating connection point C and the second rotating connection point D located on the same cross section along the thickness direction of the rod 525. The definition of the connection below is the same. As mentioned above, the movement trajectory of the first connecting rod 521 is close to that of the air inlet 2. Under the premise that α satisfies the above conditions, the trajectory of the first connecting rod 521 is close to that of the air inlet 2. For the movement of the smoke baffle 3, the second rotating connection point D is the fixed axis point, and the fifth rotating connection point C is the driving point. In order to reduce the load on the fifth rotating connection point C while ensuring the movement torque of the smoke baffle 3, the length of the third straight line CD needs to be as large as possible to meet the high strength requirements of the drive mechanism 51 structure for the heavy smoke baffle 3. Therefore, the distance between the third rotation connection point A and the second rotation connection point D (i.e., the length of the first straight line AD) should be as large as possible. Thus, in this embodiment, the third rotation connection point A is located at the top rear side of the side plate 13, while the second rotation connection point D is located at the bottom front side of the upper housing assembly 1. The cross-section of the side plate 13 (which is a vertical plane extending in the front-back direction) is rectangular, and the line connecting the third rotation connection point A and the second rotation connection point D is approximately the diagonal of the cross-section of the side plate 13. This fully utilizes the cross-sectional range of the side plate 13. The cross-section of the side plate 13 (in the vertical height direction and the front-back depth direction) is consistent with the height of the outer housing 11. While ensuring that the outer housing 11 meets the cabinet depth requirements, the height dimension of the outer housing 11 cross-section can be minimized.

[0113] Because the third straight line CD cannot be too short, meaning there must be sufficient distance between the fifth rotating connection point C and the second rotating connection point D to ensure that the first connecting rod 521 is strong enough to drive the rod 525, this would lead to excessive movement of the air intake 2 if the first connecting rod 521 is directly connected to the air intake 2, making it impossible to ensure contact with the wall. Therefore, the aforementioned first rotating connection point G is set. The line connecting the fifth rotating connection point C and the first rotating connection point G is the fourth straight line CG, and the line connecting the first rotating connection point G and the second rotating connection point D is the fifth straight line GD. The lengths of each line satisfy the following relationship: the fourth straight line CG > the fifth straight line GD. The length of the fourth straight line CG being greater than the fifth straight line GD ensures that there is sufficient distance between the fifth rotating connection point C and the second rotating connection point D to ensure that the first connecting rod 521 is strong enough to drive the rod 525, while keeping the movement of the air intake 2 within a small range.

[0114] The line connecting the third rotational connection point A and the seventh rotational connection point E is the sixth straight line AE; the line connecting the seventh rotational connection point E and the fourth rotational connection point B is the seventh straight line EB; and the line connecting the seventh rotational connection point E and the sixth rotational connection point F is the eighth straight line EF. As shown above, the movement amplitude of the first connecting rod 521 is close to the movement amplitude of the air inlet 2. In this embodiment, the connecting rod 522 is used to replace the first connecting rod 521 to reduce the movement amplitude. The second straight line BC, FG (the line connecting the first rotational connection point G and the sixth rotational connection point F), the third straight line CD, and the eighth straight line EF form a parallelogram. That is, EF and CD should be as equal in length as possible to ensure that the movement amplitudes of the first connecting rod 521 and the connecting rod 522 (air inlet 2) are close. Considering that the connecting rod 522 needs to support the air inlet 2, the length of the connecting rod 522 should be close to the front and rear depth of the air inlet 2. Therefore, the seventh rotational connection point E is set on the rocker arm 526. To meet the movement requirements of connecting rod 522, given that the movement range of the first rotating connection point G is limited, it is necessary to ensure the vertical movement of the sixth rotating connection point F. The lengths of the connecting lines must satisfy the following relationship: 2*seventh line EB < sixth line AE < 4*seventh line EB, seventh line EB < eighth line EF < 3*seventh line EB. If this range is exceeded, the movement range of connecting rod 522 will be too large or too small.

[0115] With the aforementioned motion mechanism 5, the air inlet 2 can rotate (flip) relative to the upper housing assembly 1 without a fixed axis. Its rotation center (first rotation connection point G) also rotates around the second rotation connection point D, while the rod 525 rotates around the second rotation connection point D with a fixed axis. The smoke baffle 3 can rotate (flip) relative to the upper housing assembly 1 without a fixed axis. When the smoke baffle 3 is open, the fifth rotation connection point C and the first rotation connection point G are located behind the second rotation connection point D. When the smoke baffle 3 is closed, the fifth rotation connection point C and the first rotation connection point G are located in front of the second rotation connection point D.

[0116] It is understandable that when the smoke baffle 3 is open, that is, when the air inlet 2 is in the second state, the fifth rotating connection point C is located behind the second rotating connection point D, and the first rotating connection point G is located behind the second rotating connection point D. Compared with the scheme where the first rotating connection point G coincides with the second rotating connection point D, the first rotating connection point G is located behind the second rotating connection point D. When the air inlet 2 is flipped down to the bottom, the rotating point, i.e., the first rotating connection point G, also moves backward with the rod 525, thereby making the distance between the rear plate 22 of the air inlet 2 and the wall smaller, avoiding problems such as smoke leakage and wall condensation.

[0117] During the movement of the aforementioned air inlet 2, smoke baffle 3, and motion mechanism 5, when the range hood 100 switches from the off state (as shown in Figure 19) to the on state, the drive output end of the drive mechanism 51 extends downward, the air inlet 2 flips downward, the rocker arm 526 rotates backward, and the first connecting rod 521 rotates backward and downward, causing the air inlet 2 to move backward and flip downward, ensuring that the air inlet 2 remains in close contact with the wall surface where the range hood 100 is installed during the opening process; the first connecting rod 521 also pulls the rod 525 to flip, causing the smoke baffle 3 to open. When the range hood 100 switches from the on state to the off state, the movement is reversed, which will not be described in detail here.

[0118] In the above-mentioned drive mechanism 51, it is connected to the air inlet 2. In other embodiments, the drive mechanism 51 can also be configured as a motor or electric push rod to drive the rocker arm 526 or rod 525 to rotate, thereby driving the air inlet 2 and the smoke baffle 3.

[0119] Referring to Figures 20 and 21, in one embodiment, the air inlet 2 rotates about 30° around the first rotating connection point G, the first rotating connection point G rotates about 135° around the second rotating connection point D, and the rotation radius is about 10mm.

[0120] On a vertical cross-section extending along the front-rear direction of the range hood 100, the rear end contour of the air inlet 2 has a first endpoint H, a second endpoint I, and a first midpoint J. When the air inlet 2 moves to its highest position (first state) relative to the upper housing assembly 1, the first endpoint H is located inside the upper housing assembly 1. When the air inlet 2 moves to its lowest position (fully open) relative to the upper housing assembly 1, the first endpoint H is flush with the bottom surface of the upper housing assembly 1, and the first endpoint H is higher than the second endpoint I. The first midpoint J is the rearmost point on the rear end contour of the air inlet 2. The first midpoint J moves in a straight line along the vertical direction, thus maintaining its movement close to the wall. From the first state to the second state, the air inlet 2 partially moves downward out of the upper housing assembly 1, and the first endpoint H moves from inside the upper housing assembly 1 to be flush with the bottom surface of the upper housing assembly 1.

[0121] The part of the rear end contour line of the air inlet body 2 between the first endpoint H and the first intermediate point J is a straight line. In this way, when the air inlet body 2 is fully opened, the section HJ can be completely attached to the wall. However, since the air inlet body 2 rotates non-axisymmetrically around the second rotation connection point D (because OG is much larger than OD, here much larger means at least three times, so the trajectory is approximately an arc, and this arc is centered on the first rotation connection point G or the second rotation connection point D), in order to ensure a uniform gap between the air inlet body 2 and the inside of the upper box assembly 1 during rotation and enable sealing with a sealing strip, the part between the first endpoint H and the first intermediate point J is an arc, and the radius of this arc is the distance between the first rotation connection point G and the first intermediate point J. In this way, the gap between the air inlet body 2 and the upper box assembly 1 is uniformly controllable, facilitating sealing treatment. Due to considerations of sheet metal process, manufacturing difficulty, and reliability, further, two broken lines are used to approximate the arc as closely as possible. When the bending point of the broken line (the second intermediate point K) is taken as the intersection point of the perpendicular bisector of HJ and the arc, the overall approximation effect is the best. The final cross-sectional contour of the box body is EKFGO as shown in Figure 20.

[0122] The second endpoint I and the first intermediate point J can be an arc or a straight line. Since the second endpoint I is in front of the first intermediate point J, a safety gap is ensured between the oil cup 4 and the wall, and at the same time, the condensed oil on the rear side of the air inlet body 2 can be introduced into the oil cup 4. When the air inlet body 2 is in the second state, the rear side wall of the oil cup 4 and the first intermediate point J are on the same vertical plane, ensuring that the oil on the rear end face of the air inlet body 2 can be introduced into the oil cup 4.

[0123] When the air inlet body 2 is in the first state, the position of the first rotation connection point G corresponds to the first position point O' (since the two states of the air inlet body 2 cannot be shown in the same figure, only the first position point O' is shown as a dotted line in Figure 20). When the air inlet body 2 is in the second state, the position of the first rotation connection point G corresponds to the second position point O; the second position point O is located behind the first position point O'. The distance between the projections of the second position point O and the first position point O' on the horizontal plane is L, the distance between the first endpoint H and the first rotation connection point G is L1 (at this time, it is necessary to measure by intercepting the cross-section of the air inlet body 2 passing through the first rotation connection point), and the distance between the second endpoint I and the first rotation connection point G is L2 (at this time, it is necessary to measure by intercepting the cross-section of the air inlet body 2 passing through the first rotation connection point). To ensure the degree of fitting between the air inlet body 2 and the wall in the on and off states, it is necessary to satisfy L < L2 - L1 < L + Δ, where Δ is the clearance value (constant) that meets the process and appearance requirements, and generally Δ < 5mm. L is approximately 18mm in this embodiment.

[0124] In this embodiment, the first rotation connection point G rotates around the center point (the second rotation connection point D). Alternatively, in other embodiments, the first rotation connection point G can also perform linear motion.

[0125] It is understood that the air inlet 2 is connected to the upper housing assembly 1 through a rotating connection point, and the rotating connection point moves in the front and back direction relative to the upper housing assembly 1. The lowest point of the rear end face of the air inlet 2 will move away from the wall during the downward movement of the air inlet 2. By setting the distance between the upper and lower endpoints and the rotating connection point to be close to the front and back movement distance of the rotating connection point, the air inlet 2 can keep the highest point of its rear end face against the wall in the second state, avoiding smoke leakage between the air inlet 2 and the wall gap and oil accumulation on the rear end face of the air inlet 2 during operation.

[0126] In this embodiment, to simplify the structure, the rotation center of the air inlet 2 can be directly located on the rod 525. Alternatively, connecting rods, cranks, rockers, or other connecting components can be separately set between the second rotation connection point D and the first rotation connection point G. In this case, the connecting components can be fixed to the rod 525.

[0127] Referring to Figure 22, in one embodiment, the outer housing assembly 1 is provided with a slide rail 131 (such as on the side plate 13), and the upper end of the transmission rod 524 may be provided with a slider 527, which slides and engages with the slide rail 131, and can move up and down along the slide rail 131. The sliding trajectory of the slide rail 131 can be obtained by spline curve fitting based on the motion trajectory (multi-link node motion) of the sixth rotary connection rotation connection point F after the transmission mechanism 52 is designed, so that the oil cup 4 is always in the up-down orientation.

[0128] In this way, while the transmission rod 524 moves around the sixth rotation connection point F, it maintains its posture through the sliding cooperation with the slide rail 131, so that the oil cup 4 can move relative to the air inlet 2, and finally achieve the lifting and lowering movement, so that the oil cup 4 is always facing up and down (the opening of the oil cup 4 always faces upward), ensuring the oil storage capacity of the oil cup 4 and reducing the risk of oil spillage.

[0129] Referring to Figure 23, in one embodiment, the upper end of the drive mechanism 51 can also be fixedly connected to the upper housing assembly 1 during installation. Specifically, a horizontal groove 511 extending along the front-rear direction of the range hood 100 is formed on the drive output end (lower end) of the drive mechanism 51. The air inlet 2 can slide and engage with the groove 511 through a slider and can rotate relative to the groove 511.

[0130] Referring to Figure 24, in one embodiment, a guide groove 16 is formed inside the upper housing assembly 1. The guide groove 16 is arc-shaped. With the second rotation connection point D mentioned above as the center point (i.e., the center of the circle), the front end of the air inlet 2 is rotatably connected to the upper housing assembly 1 through the first rotation connection point G, and the first rotation connection point G can slide along the guide groove 16.

[0131] Furthermore, the aforementioned drive mechanism 51 is connected to the air inlet 2. In other embodiments, the drive mechanism 51 may also be configured as a motor or electric push rod to drive the rocker arm 526 or rod 525 to rotate, thereby driving the air inlet 2 and the smoke baffle 3.

[0132] The range hood provided in this application has at least the following advantages compared with related technologies:

[0133] The range hood 100 provided in this application, when the air inlet 2 is flipped upward into the upper housing assembly 1, the smoke baffle 3 flips backward to a horizontal position and closes the air inlet, and the smoke baffle 3 is located on the rear side of the functional module 15. When the air inlet 2 is flipped downward and extends out of the upper housing assembly 1, the smoke baffle 3 flips forward and opens the air inlet 21, and the smoke baffle 3 is located on the front side of the functional module 15. Therefore, the smoke baffle 3 will not obstruct the functional module 15 in the on and off states of the range hood 100, ensuring the functional use of the functional module 15 (for example, when the functional module 15 is a lighting lamp 151, it can ensure the best lighting effect of the lighting lamp 151).

[0134] The range hood 100 provided in this application can drive the air intake body 2 and the smoke baffle 3 in linkage with the same power source, and is adaptable to different movement forms of the air intake body 2.

[0135] The range hood 100 provided in this application has an air inlet 2 connected to the upper housing assembly 1 via a rotating connection point. This rotating connection point can rotate relative to the upper housing assembly 1 around a center point, allowing the air inlet 2 to rotate non-fixed-axis relative to the upper housing assembly. This diversified movement trajectory is beneficial for keeping the range hood close to the wall when it moves downwards to open, preventing smoke from escaping through the gap between the range hood and the wall and preventing oil accumulation on the back of the air inlet. When closed and stored, the irregular movement trajectory of the non-fixed-axis rotation can be used to reduce the space occupied and make full use of the space inside the upper housing for storage.

[0136] The range hood 100 provided in this application can achieve stable lifting and lowering of the oil cup 4 by setting the transmission rod 524, slide rail 131, and slider 527 to achieve a flat position when the range hood is off and a good oil fume extraction effect when it is on.

[0137] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A range hood, characterized in that, include: Upper housing assembly; An air inlet body has an air inlet and is located at the bottom of the upper housing assembly, and is capable of flipping relative to the upper housing assembly. The functional module is located at the bottom front side of the upper housing assembly; as well as A smoke baffle is located at the bottom of the upper housing assembly and can move synchronously with the air inlet. The air inlet has a first state and a second state; In the first state, the air inlet body flips upwards to at least partially be located inside the upper housing assembly, the smoke baffle flips backwards to a horizontal position to close the air inlet, and is located entirely behind the functional module; In the second state, the air inlet body flips downwards to at least partially below the bottom of the upper housing assembly; the smoke baffle flips forward to open the air inlet and is located entirely in front of the functional module.

2. The range hood according to claim 1, wherein: The functional module is configured as a lighting lamp.

3. The range hood according to claim 1, wherein: A decorative panel is installed on the bottom front side of the upper housing assembly. The decorative panel is long and horizontally arranged. The functional module is installed on the decorative panel and is horizontally arranged. In the first state, the smoke baffle is located on the rear side of the decorative panel and is flush with the decorative panel; in the second state, the rear edge of the smoke baffle is located between the front edge of the functional module and the front edge of the decorative panel.

4. The range hood according to claim 1, wherein: The lower part of the upper housing assembly has a rear plate, and an oil guide plate is provided on the front side of the rear plate. A first receiving cavity is formed by the indentation of a portion of the rear plate, and a second receiving cavity is formed below the oil guide plate. The air inlet body includes an air inlet body rear plate and an oil filter plate provided on the front side of the air inlet body rear plate. In the second state, the rear plate of the air inlet body flips downward to extend out of the first receiving cavity, and the oil filter plate flips downward to extend out of the second receiving cavity; In the first state, the rear plate of the air inlet body flips upward into the first receiving cavity, and the oil filter plate flips upward into the second receiving cavity.

5. The range hood according to claim 1, wherein: The air inlet is directly or indirectly rotatably connected to the upper housing assembly, and the center of the rotatable connection is denoted as the first rotatable connection point. The first rotatable connection point can rotate around a center point located inside the upper housing assembly.

6. The range hood according to claim 5 or the above, wherein: It also includes a motion mechanism for driving the air inlet and the smoke baffle to work together. The motion mechanism includes a drive mechanism and a transmission mechanism. The drive mechanism directly drives the air inlet or indirectly drives the air inlet through the transmission mechanism.

7. The range hood according to claim 6, wherein: The transmission mechanism includes a rod, one end of which is rotatably connected to the upper housing assembly, and the center of the rotatable connection coincides with the center point, which serves as the second rotatable connection point.

8. The range hood according to claim 7, wherein: The smoke baffle is directly or indirectly fixedly connected to the rod; and / or, The lever is configured as a crank.

9. The range hood according to claim 8, wherein: The transmission mechanism further includes at least two connecting rods, and the upper housing assembly is also provided with a third rotating connection point. The rod and the third rotating connection point are connected by the at least two connecting rods that are rotatably connected end to end, and one of the at least two connecting rods is movably connected to the air inlet body.

10. The range hood according to claim 9, wherein: The at least two linkages include a rocker and a first linkage; one end of the rocker is rotatably connected to the upper box body assembly through the third rotational connection point, the other end of the rocker is rotatably connected to the first linkage and the center of the rotational connection is denoted as the fourth rotational connection point, the first linkage is rotatably connected to the rod member and the center of the rotational connection is denoted as the fifth rotational connection point, and the first rotational connection point is located between the fifth rotational connection point and the second rotational connection point.

11. The range hood according to claim 10, wherein: The rear end portion of the air inlet body is provided with a sixth rotational connection point, and the air inlet body is rotatably connected to the rocker or the first linkage through the sixth rotational connection point.

12. The range hood according to claim 11, wherein: The at least two linkages further include a second linkage, and the air inlet body is rotatably connected to the rocker through the second linkage and the center of the rotational connection is denoted as the seventh rotational connection point.

13. The range hood according to claim 7, wherein: An连接杆 (linkage rod) extending along the front-back direction of the range hood is fixed on the air inlet body, and the front end portion of the linkage rod is rotatably connected to the rod member through the first rotational connection point.

14. The range hood according to claim 1, 6, or 7, wherein: The air inlet body is directly or indirectly rotatably connected to the upper box body assembly and the center of the rotational connection is the first rotational connection point. When the air inlet body is in the first state, the position of the first rotational connection point corresponds to the first position point. When the air inlet body is in the second state, the position of the first rotational connection point corresponds to the second position point; the second position point is located behind the first position point, and the distance between the projections of the second position point and the first position point on the horizontal plane is L. In a vertical section extending along the front-back direction of the range hood, the rear end portion contour line of the air inlet body has a first end point and a second end point. In the first state, the first end point is located inside the upper box body assembly. In the second state, the first end point is a point flush with the bottom surface of the upper box body assembly, and the second end point is the lowest point; the distance between the first end point and the first rotational connection point is L1, the distance between the second end point and the first rotational connection point is L2, and L < L2 - L1 < L + Δ is satisfied, where Δ is a constant.

15. The range hood according to claim 6 or 7, wherein: It further includes an oil cup disposed at the rear bottom of the air inlet body. The transmission mechanism includes a transmission rod. One end of the transmission rod is fixed to the oil cup, the other end of the transmission rod is slidably connected to the upper box body assembly in the up-down direction, and the transmission rod is also rotatably connected to the air inlet body so that the oil cup maintains an up-down orientation.