A range hood

Abstract

The utility model discloses a kind of range hood, comprising: upper box body component;Air inlet body, can be relative to upper box body component movement, the air inlet body can be at at least part lower than the state of bottom of upper box body component and expose to upper box body component;Oil cup, it is set in the rear side bottom of air inlet body;And movement mechanism, it includes the drive mechanism and transmission mechanism for driving air inlet body movement;The hook arm is fixed on the oil cup, the hook arm is directly or indirectly rotatably connected with air inlet body, the hook arm is also cooperated with transmission mechanism by gear mechanism, so that oil cup keeps up and down orientation.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They operate on the principles of fluid dynamics, using a fan system installed inside to draw in cooking fumes and filtering out some grease particles with a filter. The fan system is typically a centrifugal fan, consisting of a casing, an impeller housed within the casing, and a motor that drives the impeller. When the impeller rotates, a negative pressure suction is generated at the center of the fan, drawing the cooking fumes from below into the fan. After being accelerated by the fan, the fumes are collected by the casing and guided outwards.

[0003] Traditional range hoods with smoke deflectors, such as side-draft range hoods, have a slanted design against the wall when the hood is off. When the hood is on, the smoke deflector opens, but the air intake box does not move, making it impossible to balance aesthetics when off with effective smoke extraction when on. Some products have the air intake box enclosed, with the lower side recessed when the hood is off, making it difficult to clean and maintain.

[0004] Therefore, range hoods that achieve a completely flat appearance when turned off while ensuring effective smoke extraction have been developed. Chinese Patent Application No. 201821250086.3 discloses a range hood with a movable smoke hood, comprising a main smoke hood and a movable smoke hood. The main smoke hood has a main smoke chamber inside, and the upper part of the movable smoke hood extends into the main smoke hood. The movable smoke hood has a movable smoke chamber communicating with the main smoke chamber. The outer surface of the movable smoke hood has a movable smoke outlet communicating with the movable smoke chamber. The movable smoke hood moves up and down and swings in coordination with the main smoke hood. The movable smoke hood includes at least a base plate, side baffles, a back baffle, and an oil collection cup.

[0005] In this type of range hood, the air intake body switches between closed and open working states through a combination of flipping and translating motions. The oil cup moves with the air intake body, and due to the flipping motion, there is a risk of oil spillage during the movement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a range hood that improves the stability of the oil cup movement while ensuring the oil fume extraction effect and the appearance requirements when the machine is off.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0008] Upper housing assembly;

[0009] The air inlet can move relative to the upper housing assembly, and the air inlet can be in a state where it is at least partially below the bottom of the upper housing assembly and exposed above the upper housing assembly;

[0010] The oil cup is located at the bottom rear side of the air inlet; and

[0011] The motion mechanism includes a drive mechanism and a transmission mechanism for driving the movement of the air intake body;

[0012] Its features are:

[0013] A hook arm is fixed on the oil cup. The hook arm is directly or indirectly rotatably connected to the air inlet body. The hook arm is also connected to the transmission mechanism through a gear mechanism so that the oil cup is kept facing up and down.

[0014] The oil cup and the air inlet are rotatably connected, and the rotation angle of the oil cup is controlled by the gear mechanism and the transmission mechanism. This ensures that the oil cup is always oriented up and down while moving with the air inlet, preventing the oil cup from shaking and ensuring its oil storage capacity.

[0015] Furthermore, the front end of 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.

[0016] The air inlet is connected to the upper housing assembly via a rotating connection point, and this rotating connection point can rotate relative to the upper housing assembly around a center point, allowing the air inlet to rotate non-fixed-axis relative to the upper housing assembly. This results in diverse movement trajectories, which can be advantageous when the air inlet is set to remain flush against the wall when it moves downwards to open, and when it is closed and stored, the irregular movement trajectory of the non-fixed-axis rotation can be utilized to relatively reduce the space occupied.

[0017] Furthermore, to facilitate the rotation of the first rotating connection point, the transmission mechanism includes a first connecting rod, which is rotatably connected to the upper housing assembly, and the center of the rotating connection is the second rotating connection point. The second rotating connection point serves as the center point, and the air inlet is directly or indirectly rotatably connected to the first connecting rod with the first rotating connection point as the rotation center.

[0018] Furthermore, to facilitate the connection between the air inlet and the first connecting rod, the transmission mechanism also includes a second connecting rod. The second connecting rod is fixed to the air inlet and extends out of the air inlet to achieve a rotatable connection with the first connecting rod with the first rotatable connection point as the rotation center. The hook arm is rotatably connected to the second connecting rod.

[0019] Furthermore, to facilitate control of the movement trajectory of the air intake body, the transmission mechanism also includes a third link and a fourth link. One end of the fourth link is rotatably connected to the upper housing assembly through a third rotating connection point. The center of the rotatable connection between the third link and the fourth link is denoted as the fourth rotating connection point. The center of the rotatable connection between the third link and the first link is denoted as the fifth rotating connection point. The first rotating connection point is located between the fifth rotating connection point and the second rotating connection point.

[0020] Furthermore, to facilitate control of the movement trajectory of the air intake body, a sixth rotating connection point is provided at the rear end of the air intake body. The second connecting rod on the air intake body is rotatably connected to the fourth connecting rod through the fifth connecting rod, and the center of the rotating connection point is recorded as the seventh rotating connection point. The center of the rotating connection point between the hook arm and the second connecting rod is recorded as the eighth rotating connection point.

[0021] Furthermore, the end of the fifth link is provided with a first gear, and the end of the hook arm is provided with a second gear that meshes with the first gear, thereby controlling the rotation angle of the oil cup.

[0022] Compared with the prior art, the advantages of this utility model are: by rotating the oil cup and the air inlet body, and by controlling the rotation angle of the oil cup through the gear mechanism and the transmission mechanism, the oil cup is always in an up-down orientation while moving with the air inlet body, thus avoiding the oil cup from shaking and ensuring the oil cup's oil storage capacity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the range hood in the open state according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the range hood in the open state according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional view (section and cross-section) of the range hood in the open state according to an embodiment of the present invention. Figure 2 parallel);

[0026] Figure 4 This is a schematic diagram of the transmission mechanism and oil cup hook arm of the moving mechanism of the range hood according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the range hood in the off state according to an embodiment of the present utility model;

[0028] Figure 6 This is a cross-sectional view of the range hood in the closed state according to an embodiment of the present utility model. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] See Figures 1-6 A range hood includes an upper housing assembly 1, an air inlet 2, a smoke baffle 3, and an oil cup 4.

[0032] 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.

[0033] 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, 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.

[0034] The air inlet 2 has a smoke inlet 21 formed on its front side, which can move relative to the upper housing assembly 1, thus having a first state and a second state. See also Figure 5 and Figure 6 When the air inlet 2 is in the first state, at least part of the air inlet 2, such as at least the front end, is hidden and housed within the upper housing assembly 1, and is located below the fan 6. In this embodiment, the air inlet 2 is completely housed within the upper housing assembly 1 at this time; see also Figure 1 and Figure 2When the air inlet 2 is in the second state, the air inlet 2 is at least partially below the bottom of the upper housing assembly 1 and exposed above the upper housing assembly 1, and the smoke inlet 21 is also below the bottom of the upper housing assembly 1 and exposed above the upper housing assembly 1. In this embodiment, the smoke inlet 21 is almost completely exposed. 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.

[0035] Alternatively, the air inlet 2 can also be a plate, which, in the second state, is at least partially located below the upper housing assembly 1, so that the fumes can surround the periphery of the air inlet 2 or rise from the front side 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.

[0036] The smoke baffle 3 is installed at the bottom of the upper housing assembly 1 (outer housing 11), and it can be in the third and fourth states, see [reference]. Figure 1 and Figure 2 When the air inlet 2 is in the second state, the smoke baffle 3 is in the third state, forming a smoke-collecting cavity Q between the smoke baffle 3 and the front side of the air inlet 2. This allows the smoke inlet 21 to move downwards and the smoke-collecting area to increase, ensuring better smoke extraction during operation. (See also...) Figure 5 and Figure 6 When the air inlet 2 is in the first state, the smoke baffle 3 is in the fourth state. The smoke baffle 3 is closed at the bottom of the outer casing 11. It can extend horizontally and be flush with the bottom of the outer casing 11 to achieve a completely flat closed state. At the same time, the smoke inlet 21 of the air inlet 2 is closed, and the overall size of the machine is reduced to the minimum.

[0037] The range hood also includes a motion mechanism, which comprises a drive mechanism 51 and a transmission mechanism. In this embodiment, the drive mechanism 51 is an electric push rod, which is installed inside the upper housing assembly 1. Its output end is connected to the air inlet 2, thereby driving the air inlet 2 to move relative to the upper housing assembly 1. In this embodiment, the upper end of the drive mechanism 51 is hinged to the upper housing assembly 1, and the lower end (output end) is directly hinged to the air inlet 2, thereby driving the air inlet 2 to rotate non-fixed-axis relative to the upper housing assembly 1, that is, to move along the front-to-back direction of the range hood and to rotate about an axis extending along the left-to-right direction of the range hood. Preferably, the output end of the drive mechanism 51 is hinged to the rear bottom of the air inlet 2.

[0038] The transmission mechanism controls the movement trajectory of the air inlet 2 and enables the linkage of the smoke baffle 3 of the air inlet 2, thereby allowing the air inlet 2 and the smoke baffle 3 to be linked through a power source (drive mechanism 51). There are two sets of transmission mechanisms, respectively arranged on the left and right sides within the upper housing assembly 1, connecting the air inlet 2, the smoke baffle 3, and the oil cup 4. Alternatively, the smoke baffle 3 can also be driven by an independent drive mechanism.

[0039] Each transmission mechanism includes a first connecting rod 525, which is rotatably connected to the bottom of the upper housing assembly 1. The front end of the air inlet 2 can be directly or indirectly rotatably connected to the first connecting rod 525. The center of the rotatable connection between the air inlet 2 and the first connecting rod 525 is denoted as the first rotatable connection point G (a rotatable connection point refers to any point on the axis of the rotatable connecting shaft used for rotatable connection, the same below). The center of the rotatable connection between the first connecting 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 first connecting rod 525 is preferably in the form of a crank to adapt to the movement of the smoke baffle 3. One end of the first connecting rod 525 is rotatably connected to the front bottom of the upper housing assembly 1, preferably a rotatable connection, while the other end of the first connecting rod 525 is fixed to the smoke baffle 3. By making the rod the first link 525, the smoke baffle 3 can easily bypass fixed components during movement, such as the decorative panel and the lighting fixtures installed on the decorative panel.

[0040] The air inlet 2 is connected to the upper housing assembly 1 via the first connecting rod 525. This rod connection structure facilitates high-precision control. The linkage between the air inlet 2 and the smoke baffle 3, as well as the high-precision control of the movement trajectory of the air inlet 2, can be achieved simply through the connection of the rods. 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.

[0041] Preferably, in this embodiment, the air inlet body 2 is connected to the first connecting rod 525 via the second connecting rod 522. The second connecting rod 522 is fixed to the air inlet body 2 and extends along the front-rear direction of the range hood. Preferably, it can be fixed to the bottom of the air inlet body 2. The front end of the second connecting rod 522 is rotatably connected to the first connecting rod 525, while the rear end of the second connecting rod 522 is close to the rear end of the air inlet body 2. The two second connecting rods 522 can extend along the outside (left and right sides) of the smoke inlet 21 inside the air inlet body 2 and extend out of the air inlet body 2.

[0042] 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 also includes at least two connecting rods located between the third rotating connection point A and the first connecting 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.

[0043] In this embodiment, the at least two connecting rods mentioned above are the third connecting rod 521 and the fourth connecting rod 526, and the upper housing assembly 1 serves as the frame of the entire transmission mechanism. One end of the fourth connecting rod 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, and the center of the rotatable connection is the third rotatable connection point A. The third rotatable connection point A is preferably located at the rear top of the side plate 13. The side plate 13 is adapted to the transmission mechanism 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.

[0044] One end of the third link 521 is rotatably connected to the end of the fourth link 526 away from the third rotational connection point A. The center of the rotational connection is denoted as the fourth rotational connection point B. The other end of the third link 521 is rotatably connected to the first link 525. The center of the rotational connection is denoted as the fifth rotational connection point C. The movement trajectory of the third link 521 is preferably close to the movement trajectory of the air inlet 2. The third link 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 third link 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 third link 521 through a link. In this embodiment, the third link 521 is connected to the air inlet 2 through the first link 525. The first rotational connection point G is located between the fifth rotational connection point C and the second rotational connection point D, and the three rotational connection points do not coincide. Thus, the air inlet 2 and the smoke baffle 3 can rotate in the same direction.

[0045] To ensure that the air inlet 2 has a unique degree of freedom, a fifth link 523 is provided between the air inlet 2 and the fourth link 526. One end of the fifth link 523 is directly or indirectly rotatably connected to the air inlet 2; in this embodiment, it is rotatably connected to the second link 522. The center of this rotatable connection is designated as the sixth rotatable connection point F. The other end of the fifth link 523 is rotatably connected to the fourth link 526. The center of this rotatable connection is designated as the seventh rotatable connection point E, which 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 link located between the fourth link 526 and the second rotatable connection point D of the first link 525. The rotation axes of all the above rotatable connections extend along the left-right direction of the range hood.

[0046] Preferably, all of the above rotational connections are hinged, and each rotational connection point is a hinge point.

[0047] During the movement of the aforementioned air inlet 2, smoke baffle 3, and moving mechanism, when the range hood moves from the closed state (e.g., Figure 5 and Figure 6When the range hood is turned on, the output end of the drive mechanism 51 extends downward, the air inlet 2 flips downward, the fourth link 526 rotates backward, and the third link 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 is installed during the opening process; the third link 521 also pulls the first link 525 to flip, causing the smoke baffle 3 to open. To close, simply reverse the movement.

[0048] The oil cup 4 is located at the rear bottom of the air inlet body 2. To ensure that the oil cup 4 remains vertical during the movement of the air inlet body 2 and to reduce the swaying caused by the movement of the air inlet body 2, the oil cup 4 is directly or indirectly rotatably connected to the air inlet body 2 via a hook arm 41. For details, see... Figure 3 and Figure 4 One end of the hook arm 41 is fixed to the oil cup 4, and the other end is rotatably connected to the second connecting rod 522 fixed on the air inlet 2. The center of the rotatable connection is denoted as the eighth rotatable connection point H. The hook arm 41 can rotate around the eighth rotatable connection point H. The sixth rotatable connection point F and the eighth rotatable connection point H do not coincide, that is, they are located at different positions on the second connecting rod 522. The end of the fifth connecting rod 523 is provided with a first gear 5231, and the end of the hook arm 41 is provided with a second gear 411. The first gear 5231 and the second gear 411 mesh, and the rotation axes of the two gears extend along the left and right direction of the range hood. Through the meshing of the two gears, the swing angle of the hook arm 41 can be controlled. By adjusting the gear transmission ratio, the hook arm 41 is kept vertical in both the off and on states. This ensures that while the oil cup assembly retracts and extends with the air inlet assembly, the oil cup is completely vertical in both the off and on states, ensuring the appearance of the range hood when it is turned on and off, and preventing the oil in the oil cup from overflowing due to excessive swing amplitude during the on and off process.

[0049] The aforementioned air inlet 2, smoke baffle 3, and fan 6 can all be controlled by a voice module. A controller, a voice receiving module, and a voice parsing module can be installed on the range hood. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the corresponding drive mechanisms of the air inlet 2, smoke baffle 3, and fan 6 to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A range hood, comprising: Upper housing assembly (1); The air inlet (2) can move relative to the upper housing assembly (1), and the air inlet (2) can be in a state where it is at least partially below the bottom of the upper housing assembly (1) and exposed above the upper housing assembly (1); Oil cup (4), which is located at the rear bottom of the air inlet (2); and The motion mechanism includes a drive mechanism (51) for driving the air intake (2) to move and a transmission mechanism; Its features are: A hook arm (41) is fixed on the oil cup (4). The hook arm (41) is directly or indirectly rotatably connected to the air inlet body (2). The hook arm (41) is also connected to the transmission mechanism through a gear mechanism so that the oil cup (4) remains in the up-down orientation.

2. The range hood according to claim 1, characterized in that: The front end of the air inlet (2) is directly or indirectly rotatably connected to the upper housing assembly (1), and the center of the rotatable connection is denoted as the first rotatable connection point (G). The first rotatable connection point (G) can rotate around a center point located inside the upper housing assembly (1).

3. The range hood according to claim 2, characterized in that: The transmission mechanism includes a first connecting rod (525), which is rotatably connected to the upper housing assembly (1) and the center of the rotatable connection is a second rotatable connection point (D). The second rotatable connection point (D) serves as the center point. The air inlet (2) is directly or indirectly rotatably connected to the first connecting rod (525) with the first rotatable connection point (G) as the rotation center.

4. The range hood according to claim 3, characterized in that: The transmission mechanism also includes a second link (522), which is fixed to the air inlet (2). The second link (522) extends out of the air inlet (2) and is rotatably connected to the first link (525) with the first rotatable connection point (G) as the rotation center. The hook arm (41) is rotatably connected to the second link (522).

5. The range hood according to claim 4, characterized in that: The transmission mechanism further includes a third link (521) and a fourth link (526). One end of the fourth link (526) is rotatably connected to the upper housing assembly (1) through a third rotating connection point (A). The third link (521) and the fourth link (526) are rotatably connected, and the center of the rotatable connection point is denoted as the fourth rotating connection point (B). The third link (521) and the first link (525) are rotatably connected, and the center of the rotatable connection point is denoted as the fifth rotating connection point (C). The first rotating connection point (G) is located between the fifth rotating connection point (C) and the second rotating connection point (D).

6. The range hood according to claim 5, characterized in that: The rear end of the air inlet (2) is provided with a sixth rotating connection point (F). The second connecting rod (522) on the air inlet (2) is rotatably connected to the fourth connecting rod (526) through the fifth connecting rod (523), and the center of the rotatable connection point is recorded as the seventh rotating connection point (E). The center of the rotatable connection point between the hook arm (41) and the second connecting rod (522) is recorded as the eighth rotating connection point (H).

7. The range hood according to claim 6, characterized in that: The end of the fifth link (523) is provided with a first gear (5231), and the end of the hook arm (41) is provided with a second gear (411) that meshes with the first gear (5231).

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