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, to at least can be in lower than the state of the bottom of upper box body component and expose in upper box body component;And movement mechanism, the movement mechanism includes first drive mechanism;The movement mechanism further includes transmission mechanism, the transmission mechanism includes first connecting rod and second connecting rod, two ends of the first connecting rod are respectively connected with upper box body component and air inlet body rotation, two ends of the second connecting rod are also respectively connected with upper box body component and air inlet body rotation, the first drive mechanism drives one of connecting rod rotation around the axis along the width direction of range hood.

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] Chinese cooking produces a lot of oil fumes. To maintain a clean kitchen environment and protect human health, range hoods have become an indispensable appliance in modern family kitchens. 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 fume extraction path is longer, and the extraction time is increased, making it easier for fumes to escape during cooking. On the other hand, if the installation height of the range hood is lowered and the air inlet is placed as close to the source of the fumes as possible, the negative pressure will expand downwards, which can improve the fume extraction efficiency, but it will result in a smaller cooking space. The cook's head may accidentally hit the fume hood. In addition, a lower installation height will also affect the view and the overall appearance of the kitchen.

[0003] To address this issue, a lift-type range hood has been invented, where the air intake unit can be raised and lowered; when the hood is turned on, the air intake unit descends.

[0004] When the machine is turned off, the air intake rises. For example, a range hood disclosed in Chinese Patent Application No. 202322824958.X includes a housing and a fan frame located inside the housing, as well as a lifting body and a first drive mechanism that drives the lifting body to move up and down relative to the fan frame. A smoke baffle is installed at the bottom of the housing, and the smoke baffle can be flipped to open or close the air intake under the drive of the second drive mechanism. The lifting movement of the lifting body and the flipping movement of the smoke baffle are independent or linked. In this type of range hood, the lifting body is heavy and requires multiple guide rails, and its vertical lifting requires a large clearance space inside the housing, thus resulting in higher costs. For example, the Chinese patent application number 202510702119.1 disclosed by the applicant is a linkage range hood, which includes an upper box assembly and an air inlet that can move relative to the upper box assembly. The smoke baffle and the air inlet are linked, but it has a large number of connecting rods, occupies a large space, and the relative moving parts have a complex relationship with each other. The whole machine has a large number of parts, the cost is high, and the oil cup cannot be hidden when closed.

[0005] Therefore, further improvements are needed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a range hood that simplifies the structure, reduces the cost, and improves the stability of the air intake body, in order to address the shortcomings of the existing technology.

[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, so that it can be at least in a state below the bottom of the upper housing assembly and exposed above the upper housing assembly; and

[0010] A motion mechanism, the motion mechanism including a first drive mechanism;

[0011] Its features are:

[0012] The motion mechanism further includes a transmission mechanism, which includes a first connecting rod and a second connecting rod. The two ends of the first connecting rod are rotatably connected to the upper housing assembly and the air inlet body, respectively. The two ends of the second connecting rod are also rotatably connected to the upper housing assembly and the air inlet body, respectively. The first driving mechanism drives one of the connecting rods to rotate around an axis extending along the width direction of the range hood.

[0013] The air intake body is oscillating and lifting by using a simple linkage mechanism. The entire motion mechanism is simple and the relative relationship of the moving parts is simple, which makes the air intake body move stably. The whole machine has fewer parts and maintains the integrity of the upper box assembly. In addition, there is no need to use electric push rods and multiple guide rails, so the manufacturing cost is low.

[0014] Furthermore, to improve the smoke collection effect, the range hood also includes a smoke baffle that can be flipped relative to the upper housing assembly. When the range hood is in the open state, the smoke baffle opens to the front of the air inlet body, and a smoke collection chamber is formed between the smoke baffle and the front of the air inlet body.

[0015] Furthermore, the range hood also includes a second drive mechanism and a third connecting rod. The second drive mechanism drives the third connecting rod to rotate about an axis extending along the width direction of the range hood. One end of the third connecting rod is rotatably connected to the housing assembly, while the other end is fixed to the smoke baffle. Thus, the smoke baffle and the air inlet employ independent mechanisms, further simplifying the motion mechanism.

[0016] Furthermore, to facilitate the passage of the air inlet body through the upper housing assembly and the smoke baffle, the bottom surface of the upper housing assembly is provided with an opening for the air inlet body to pass through, and a plate is provided on the bottom surface of the upper housing assembly in front of the opening, and the third connecting rod is rotatably connected to the plate.

[0017] Preferably, when the range hood is in the off state, the air inlet is housed in the upper housing assembly, and the smoke baffle closes the opening, thereby achieving a completely flat surface in the off state, improving the overall consistency of the machine and facilitating cleaning.

[0018] Furthermore, since the air inlet is a movable part, in order to collect the oil flowing down from it, the range hood also includes an oil cup, which is located below the air inlet and can collect the oil flowing down from the air inlet.

[0019] Furthermore, in order to keep the oil cup vertical and ensure a certain amount of oil storage, the range hood also includes a fourth connecting rod. The two ends of the fourth connecting rod are rotatably connected to the air inlet and the oil cup, respectively, and the rotation axis of the fourth connecting rod extends along the width direction of the range hood.

[0020] Furthermore, to further ensure the posture of the oil cup, ensure a certain amount of oil storage, and avoid interference with other components, a vertically extending groove is formed on the rear side of the upper housing assembly. The range hood also includes a connector, which is fixed to the oil cup and slidably connected to the groove.

[0021] Furthermore, when the range hood is in the off state, the air inlet and oil cup are housed inside the upper housing assembly, thereby achieving a completely flat surface when the machine is off, improving the overall consistency of the machine and facilitating cleaning.

[0022] Compared with the prior art, the advantages of this utility model are: the simple linkage mechanism realizes the swing lifting of the air inlet, the whole motion mechanism is simple, the relative relationship of the moving parts is simple, which makes the air inlet move stably, and the number of parts of the whole machine is small, preserving the integrity of the upper box assembly. In addition, there is no need to use electric push rods and multiple guide rails, so the manufacturing cost is low. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the range hood in the closed state according to an embodiment of the present utility model (viewed from front to back);

[0024] Figure 2 This is a schematic diagram of the closed state of the range hood according to an embodiment of the present utility model (viewed from back to front);

[0025] Figure 3 This is a sectional side view of the range hood in the closed state according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the air inlet, smoke baffle, and motion mechanism of the range hood according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the upper housing assembly of the range hood according to an embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the range hood being opened according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the range hood in the open state according to an embodiment of the present utility model;

[0030] Figure 8This is a cross-sectional side view of the range hood in the open state according to an embodiment of the present utility model. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] See Figures 1 to 8 A range hood includes an upper housing assembly 1, an air inlet 2, a smoke baffle 3, and an oil cup 4.

[0034] 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 a fan (not shown).

[0035] The upper housing assembly 1 can be installed inside a kitchen cabinet. Since the width of the fan bracket 12 usually needs to match the width of the fan, the fan bracket 12 does not need to be large. However, the air inlet 2 needs to be wider 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 bracket 12. If the optimization of air intake efficiency is not considered, an integrated upper housing assembly 1 can also be used. The depth dimension of the outer housing 11 is L1, and it meets the requirements of 300mm≤L1≤320mm and L1≥300mm. This ensures the installation space of the fan inside the fan bracket 12 and the negative pressure area of ​​the lower smoke baffle 3 (described below), thereby ensuring the smoke extraction effect. L1≤320mm allows the upper housing assembly 1 to be hidden in the cabinets of most households.

[0036] 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 1 and Figure 2 When the air inlet 2 is in the first state, the air inlet 2 is at least partially hidden and housed within the upper housing assembly 1, and is located below the fan. In this embodiment, the air inlet 2 is completely housed within the upper housing assembly 1 at this time; see also Figure 7 and Figure 8 When 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 below the bottom surface of the upper housing assembly 1 and exposed above the upper housing assembly 1. In this embodiment, the front of the air inlet 2 is gradually inclined downward from front to back, and 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.

[0037] 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 13 at the bottom of the upper housing assembly 1 as described below.

[0038] The range hood also includes a smoke baffle 3, which is located at the bottom of the upper housing assembly 1. In this embodiment, the bottom surface of the upper housing assembly 1 has an opening 13, and a plate 14 is located in front of the opening 13. The air inlet 2 passes through the opening 13 and then through the upper housing assembly 1. When the range hood is closed, the air inlet 2 can be completely retracted into the upper housing assembly 1, at which time the smoke baffle 3 can close the opening 13. The plate 14 can be used for decoration or as a mounting base for some functional components, such as for installing lighting devices. The smoke baffle 3 can be installed with the upper housing assembly 1 at the plate 14.

[0039] The smoke baffle 3 can be in an open or closed state, see [link / reference] Figures 1-3 When the air inlet 2 is in the first state, the smoke baffle 3 is in the closed state. The smoke baffle 3 is sealed at the bottom of the outer casing 11, and it can extend horizontally 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 a minimum. See Figures 6-8 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, so as to realize the downward movement of the smoke inlet 21 and the increase of the smoke collection area, ensuring a better oil fume extraction effect in the working state.

[0040] To drive the movement of the air inlet 2 and the smoke baffle 3, the range hood also includes a motion mechanism. This motion mechanism includes a first drive mechanism 511, a second drive mechanism 512, and a transmission mechanism. The transmission mechanism controls the movement trajectory of the air inlet 2 and includes a first connecting rod 521 and a second connecting rod 522. One end of the first connecting rod 521 is rotatably connected to the upper housing assembly 1 (usually the outer housing 11), and the other end is rotatably connected to the air inlet 2. One end of the second connecting rod 522 is also rotatably connected to the upper housing assembly 1 (usually the outer housing 11), and the other end is rotatably connected to the air inlet 2. The upper housing assembly 1 can be connected to the two connecting rods via a side plate, as disclosed in Chinese Patent Application No. 202510702119.1 in the background art, but not shown here. Both connecting rods rotate around a fixed axis, and the rotation centers of the two connecting rods (where they are rotatably connected to the upper housing assembly 1) are spaced apart along the depth direction of the range hood, as shown below. Figure 3 As shown, the rotation center of the first link 521 is located behind the rotation center of the second link 522, and the heights of the two rotation centers can be the same or different. The first drive mechanism 511 can be a motor to drive one of the links, such as the preferred first link 521. The rotation axes of the first link 521 and the second link 522 are both along the width direction of the range hood (in the normal installation state, when the user faces the range hood, this is the left-right direction of the range hood from the user's perspective, e.g.) Figure 1 (As indicated by the middle arrow X) Extends. Preferably, the first link 521 and the second link 522 are both hinged to the upper housing assembly 1 and the air inlet 2.

[0041] Thus, the upper housing assembly 1, the first connecting rod 521, the second connecting rod 522, and the air inlet 2 constitute a four-bar linkage mechanism.

[0042] The transmission mechanism also includes a third connecting rod 523, one end of which is rotatably connected to the upper housing assembly 1, and the other end is fixed to the smoke baffle 3. Preferably, the third connecting rod 523 is in the form of a crank, which can be rotatably connected to the upper surface of the plate 14 at the bottom of the upper housing assembly 1; more preferably, the two are hinged. The axis of rotation of the third connecting rod 523 extends along the width direction of the range hood. The second drive mechanism 512 can be a motor, used to drive the third connecting rod 523 to rotate.

[0043] When the range hood needs to be turned on from the off position, see Figure 3 , Figures 6-8 The first drive mechanism 511 and the second drive mechanism 512 are activated. The first drive mechanism 511 drives the first connecting rod 511 to rotate clockwise (from...). Figure 3 and Figure 8 From the perspective of [the user's] perspective, the air inlet 2 swings downwards and backwards, allowing it to be flush against the wall where the range hood is installed when open. The second drive mechanism 512 drives the third link 523 to rotate counterclockwise (from [the user's] perspective). Figure 3 and Figure 8 (From the perspective of [the viewpoint]), the smoke baffle 3 rotates forward and opens. The reverse is also true.)

[0044] The movement of the air inlet 2 and the smoke baffle 3 are not linked; a simple linkage mechanism is used to achieve the raising and lowering of the air inlet 2 and the opening and closing of the smoke baffle 3. The entire motion mechanism is simple, the relative relationships of the moving parts are simple, and the number of parts in the whole machine is small, preserving the integrity of the upper housing assembly 1. In addition, there is no need to use electric push rods and multiple guide rails, thus reducing manufacturing costs.

[0045] The range hood also includes an oil cup 4. If the oil cup 4 is installed on the air inlet 2, it will rotate at a certain angle during the movement of the air inlet 2, resulting in low reliability and low oil retention when closed. Therefore, in this embodiment, the motion mechanism also includes a fourth connecting rod 524 and a connector 53. A sliding groove 15 is formed on the rear side of the upper housing assembly 1, extending vertically. The lower end of the connector 53 is fixed to the oil cup 4, and the upper end of the connector 53 is slidably connected to the sliding groove 15. Both ends of the fourth connecting rod 524 are rotatably connected to the air inlet 2 and the oil cup 4, respectively; more preferably, the rotatable connection is a hinge. The rotation axis of the fourth connecting rod 524 extends along the width direction of the range hood. Thus, during the movement of the air inlet 2, the oil cup 4 remains vertical and moves up and down. In particular, when the air inlet 2 is in its first state, it is completely housed within the upper housing assembly 1, and the oil cup 4 is also completely housed within the upper housing assembly 1, resulting in a high degree of refinement in the overall cabinet configuration. The oil cup 4 maintains a reliable posture during its lifting and lowering process, ensuring a certain amount of oil is stored, and its lifting and lowering process does not interfere with any other components. Throughout the entire movement, the oil cup 4 remains below the lowest point of the air inlet 2, ensuring that it can collect the oil flowing down from the air inlet 2 throughout its opening and closing process.

[0046] The aforementioned air inlet 2, smoke baffle 3, and fan 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 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) is movable relative to the upper housing assembly (1), so that it can be at least in a state below the bottom of the upper housing assembly (1) and exposed above the upper housing assembly (1); and A motion mechanism, the motion mechanism including a first drive mechanism (511); Its features are: The motion mechanism further includes a transmission mechanism, which includes a first connecting rod (521) and a second connecting rod (522). The two ends of the first connecting rod (521) are rotatably connected to the upper housing assembly (1) and the air inlet body (2), respectively. The two ends of the second connecting rod (522) are also rotatably connected to the upper housing assembly (1) and the air inlet body (2), respectively. The first driving mechanism (511) drives one of the connecting rods to rotate around an axis extending along the width direction of the range hood.

2. The range hood according to claim 1, characterized in that: The range hood also includes a smoke baffle (3) that can be flipped relative to the upper housing assembly (1). When the range hood is in the open state, the smoke baffle (3) is opened on the front side of the air inlet (2), and a smoke collection chamber (Q) is formed between the smoke baffle (3) and the front side of the air inlet (2).

3. The range hood according to claim 2, characterized in that: The range hood also includes a second drive mechanism (512) and a third link (523). The second drive mechanism (512) drives the third link (523) to rotate around an axis extending along the width direction of the range hood. One end of the third link (523) is rotatably connected to the housing assembly (1), while the other end is fixed to the smoke baffle (3).

4. The range hood according to claim 3, characterized in that: The bottom surface of the upper housing assembly (1) is provided with an opening (13) for the air inlet (2) to pass through. The bottom surface of the upper housing assembly (1) is provided with a plate (14) in front of the opening (13). The third connecting rod (523) is rotatably connected to the plate (14).

5. The range hood according to claim 4, characterized in that: When the range hood is in the off state, the air inlet (2) is housed in the upper housing assembly (1), and the smoke baffle (3) closes the opening (13).

6. The range hood according to any one of claims 1 to 4, characterized in that: The range hood also includes an oil cup (4), which is located below the air inlet (2) and can collect the oil flowing down from the air inlet (2).

7. The range hood according to claim 6, characterized in that: The range hood also includes a fourth link (524), the two ends of which are rotatably connected to the air inlet (2) and the oil cup (4) respectively, and the rotation axis of the fourth link (524) extends along the width direction of the range hood.

8. The range hood according to claim 7, characterized in that: The upper housing assembly (1) has a vertically extending slide groove (15) on its rear side. The range hood also includes a connector (53), which is fixed to the oil cup (4) and is slidably connected to the slide groove (15).

9. The range hood according to claim 8, characterized in that: When the range hood is in the off state, the air inlet (2) and the oil cup (4) are housed in the upper housing assembly (1).

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