Range hood

Abstract

The utility model belongs to the technical field of electric appliances, and particularly discloses a range hood. The range hood comprises an exhaust fume collecting hood and a turning plate mechanism. A front opening is formed in the front side of the exhaust fume collecting hood; the turning plate mechanism comprises two mounting plates, a turning plate assembly and a turning plate driving mechanism, the two mounting plates are arranged at intervals in the left-right direction, the mounting plates extend into the exhaust fume collecting hood from the front opening and are detachably connected with the exhaust fume collecting hood, the turning plate assembly comprises a plurality of turning panels, and the turning panels are arranged on the turning plate driving mechanism. The left end and the right end of the turnover panel are rotationally mounted on the two mounting plates through mounting shafts, and the turnover panel driving mechanism is mounted on the mounting plates and drives the turnover panel to rotate, so that switching of the turnover panel assembly between an open state and a closed state is achieved. According to the range hood disclosed by the utility model, the turning plate mechanism can be conveniently disassembled and assembled, and the cleaning convenience of the turning plate mechanism and the interior of the exhaust fume collecting hood is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a range hood. Background Art

[0002] A range hood is a common kitchen appliance used to extract oil fumes to purify the kitchen environment. It usually includes a smoke hood and a fan. The smoke hood is provided with a smoke collecting chamber inside and a smoke inlet connected to the smoke collecting chamber on one side. The fan is used to form a negative pressure at the smoke inlet so that the external oil smoke is discharged to the outside through the smoke inlet and the smoke collecting chamber in turn.

[0003] The range hood provided by the prior art is usually provided with a flip panel at the smoke inlet, and a driving mechanism is provided inside the smoke collecting hood, and the driving mechanism drives the flip panel to rotate to open or close the smoke inlet, so that the smoke inlet is open when the range hood is in use and the smoke inlet is closed when the range hood is not in use. During the oil fume extraction process, when the oil fume enters the smoke collecting chamber, it will partially condense and adhere to the inside of the smoke collecting chamber, resulting in the accumulation of oil stains on the inner wall of the smoke collecting chamber, making the range hood prone to oil leakage after long-term use, and increasing the hidden danger of fire inside the range hood.

[0004] In order to clean the inside of the smoke hood, the prior art usually requires disassembling the flip panel and then cleaning the inside of the smoke hood. However, since the flip panel is installed in the smoke hood through a driving mechanism, the installation structure of the flip panel and the smoke hood is relatively complicated, and disassembly and assembly of the flip panel on the smoke hood is difficult, time-consuming and labor-intensive, and it is easy to cause misalignment of the flip panel after repeated disassembly and assembly, thereby affecting the normal use of the range hood. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a range hood which can effectively solve the problem of the difficulty in disassembling and assembling the flip panel on the smoke hood of the existing range hood, resulting in difficulty in cleaning the inside of the smoke hood, thereby improving the cleaning convenience of the range hood and improving the safety of the range hood.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A range hood, characterized by comprising:

[0008] A smoke collecting hood, wherein a front opening is provided on the front side of the smoke collecting hood;

[0009] The flap mechanism comprises a mounting plate, a flap assembly and a flap driving mechanism, wherein two mounting plates are arranged at intervals along the left-right direction, and the mounting plate extends from the front opening into the smoke collecting hood and is detachably connected to the smoke collecting hood, the flap assembly comprises a plurality of flip panels, both left and right ends of the flip panels are rotatably mounted on the two mounting plates through mounting shafts, and the flap driving mechanism is mounted on the mounting plate and drives the flip panels to rotate, so as to realize the switching of the flap assembly between an open state and a closed state;

[0010] When the flap assembly is in a closed state, the flap assembly closes the front opening; when the flap assembly is in an open state, the front opening is partially exposed to form a smoke inlet.

[0011] Compared with the background technology, the range hood described in the utility model has the following beneficial effects: since the flap drive mechanism and the flip panel are both mounted on the mounting plate, and the mounting plate is detachably connected to the smoke hood, the flap mechanism forms a module that can be disassembled and assembled relative to the smoke hood as a whole, thereby improving the convenience of disassembling and assembling the flap mechanism on the smoke hood, thereby improving the convenience of cleaning the inside of the smoke hood and the flap mechanism, and at the same time improving the convenience of repairing and replacing the internal structure of the smoke hood; at the same time, since the mounting plate is fixedly connected to the smoke hood rather than rotatably connected, repeated disassembly and assembly of the mounting plate relative to the smoke hood will not have a significant impact on the installation position and installation accuracy of the flap mechanism, thereby ensuring the operational reliability of the flip panel during long-term use; furthermore, since the flip panel and the flap drive mechanism are integrally mounted on the mounting plate, the structure of the smoke hood can be greatly simplified, thereby reducing the processing difficulty and processing cost of the smoke hood.

[0012] In one embodiment, at least two flip panels are arranged side by side from top to bottom, and the flip panel driving mechanism drives all the flip panels to rotate synchronously;

[0013] When the flap assembly is in a closed state, all the flip panels are flush and arranged side by side; when the flap assembly is in an open state, two adjacent flip panels are opposite and spaced apart, and the smoke inlet is formed between the two adjacent flip panels.

[0014] In one embodiment, the flap driving mechanism includes a driving motor, a linkage and a swing arm, the swing arm is arranged in a one-to-one correspondence with the flip panel, the first end of the swing arm is fixedly connected to the corresponding mounting shaft, the second ends of all the swing arms are pivotally connected to the linkage, the driving motor is transmission-connected to the linkage, and the driving motor actuates all the swing arms to rotate around the rotation axis of the corresponding mounting shaft through the linkage, so that the flap assembly switches between the open state and the closed state.

[0015] In one embodiment, the motor shaft of the driving motor extends along the left-right direction, the motor shaft and the linkage member are connected in transmission through a connecting rod transmission assembly, the first end of the connecting rod transmission assembly is fixedly connected to the motor shaft, and the second end of the connecting rod transmission assembly is pivotally connected to the linkage member;

[0016] And / or, the driving motor is installed on a side of the linkage member away from the flap assembly.

[0017] In one embodiment, the connecting rod transmission assembly includes an active rocker arm and a driven rocker arm, the first end of the active rocker arm is fixedly connected to the motor shaft, the second end of the active rocker arm is pivoted to the first end of the driven rocker arm through a first pivot shaft, the second end of the driven rocker arm is pivoted to the linkage member through a second pivot shaft, and the motor shaft, the first pivot shaft and the second pivot shaft all extend along the left-right direction and are spaced apart from each other.

[0018] In one embodiment, the linkage member includes a first plate portion, a second plate portion and a third plate portion which are connected in sequence at an angle, and the first plate portion and the third plate portion are both arranged opposite to the mounting plate; the first plate portion is connected to the swing arm, and the third plate portion is transmission connected to the drive motor.

[0019] In one embodiment, the first plate portion is located on a side of the second plate portion facing the flap assembly, the third plate portion is located on a side of the second plate portion facing away from the flap assembly, and the drive motor portion is located between the third plate portion and the mounting plate.

[0020] In one of the embodiments, the flap driving mechanism is located on a side of one of the mounting plates away from the other mounting plate.

[0021] In one embodiment, a mounting seat is provided on the back side of each flip panel, and the mounting seat is located between the two mounting plates. Two mounting seats are provided at intervals along the left and right directions, and the mounting shaft is fixedly mounted on each mounting seat, and the mounting shaft is detachably connected to the mounting seat and / or the mounting plate.

[0022] In one of the embodiments, a mounting portion is provided on a side of each mounting plate away from the flap assembly, and the mounting portion is detachably connected to a back plate of the smoke collecting hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the range hood provided by the embodiment of the utility model when the flap assembly is in a closed state;

[0024] Figure 2A schematic diagram of the structure of the range hood provided by the embodiment of the utility model when the flap assembly is in an open state;

[0025] Figure 3 A schematic diagram of the disassembled structure of a range hood provided by an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the structure of the flap mechanism provided by an embodiment of the utility model when the flap assembly is in an open state;

[0027] Figure 5 A schematic diagram of the structure of the flap mechanism provided by the embodiment of the utility model when the flap assembly is in a closed state;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure of the middle part;

[0029] Figure 7 for Figure 6 A partial enlarged view of point I in the middle;

[0030] Figure 8 for Figure 6 A partial enlarged view of the J in the middle.

[0031] Description of labels:

[0032] 100, flap mechanism; 200, smoke hood; 201, side panel; 202, front panel; 2021, front opening; 203, back panel; 204, smoke inlet; 300, bellows;

[0033] 1. flap assembly; 11. flip panel; 12. mounting seat; 121. fixed plate portion; 122. ear plate portion; 13. mounting shaft; 131. first shaft portion; 132. second shaft portion; 133. third shaft portion; 134. limit end portion;

[0034] 2. flap driving mechanism; 21. driving motor; 211. motor shaft; 2111. driving shaft; 21111. anti-rotation plane; 22. linkage member; 221. first plate; 222. second plate; 223. third plate; 23. swing arm; 24. connecting rod transmission assembly; 241. active swing arm; 242. slave swing arm; 243. first pivot axis; 244. second pivot axis; 25. third pivot axis;

[0035] 3. Mounting plate; 31. Mounting portion; 4. Limiting member. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The present embodiment provides a range hood, which can be used in a kitchen environment to achieve oil fume extraction, improve the oil fume extraction effect, and enhance the cooking experience.

[0041] Specifically, as shown in Figure 1 and Figure 2As shown, the range hood includes a smoke collecting hood 200, a flap mechanism 100 and a fan. The smoke collecting hood 200 has a smoke collecting cavity inside, and the front plate 202 of the smoke collecting hood 200 is provided with a front opening 2021; the flap mechanism 100 is installed on the smoke collecting hood 200, and the flap mechanism 100 includes a flap assembly 1 and a flap driving mechanism 2, and the flap driving mechanism 2 drives the flap assembly 1 to switch between an open state and a closed state. When the flap assembly 1 is in a closed state, the flap assembly 1 closes the front opening 2021, and when the flap assembly 1 is in an open state, the front opening 2021 is partially exposed to form a smoke inlet 204; the fan promotes external oil smoke to enter the smoke collecting cavity through the opened smoke inlet 204, and promotes the oil smoke in the smoke collecting cavity to be discharged out of the range hood.

[0042] like Figures 1 to 4 As shown, in the present embodiment, the flap mechanism 100 further includes a mounting plate 3, two mounting plates 3 are arranged opposite to each other and spaced apart in the left-right direction, and the mounting plates 3 extend into the smoke hood 200 from the front opening 2021 and are detachably connected to the smoke hood 200, the flap assembly 1 includes a plurality of flip panels 11, the left and right ends of the flip panel 11 are rotatably mounted on the two mounting plates 3 through mounting shafts 13, and the flap driving mechanism 2 is mounted on the mounting plate 3 and drives the flip panel 11 to rotate.

[0043] The range hood provided in the present embodiment has the flap drive mechanism 2 and the flip panel 11 both mounted on the mounting plate 3, and the mounting plate 3 is detachably connected to the smoke hood 200, so that the flap mechanism 100 forms a module that can be disassembled and assembled relative to the smoke hood 200 as a whole, thereby improving the convenience of disassembling and assembling the flap mechanism 100 on the smoke hood 200, thereby improving the convenience of cleaning the inside of the smoke hood 200 and the flap mechanism 100, and at the same time improving the convenience of repairing and replacing the internal structure of the smoke hood 200; at the same time, since the mounting plate 3 is fixedly connected to the smoke hood 200 rather than being rotatably connected, the repeated disassembly and assembly of the mounting plate 3 relative to the smoke hood 200 will not have a significant impact on the installation position and installation accuracy of the flap mechanism 100, thereby ensuring the operational reliability of the flip panel 11 during long-term use; furthermore, since the flip panel 11 and the flap drive mechanism 2 are integrally mounted on the mounting plate 3, the structure of the smoke hood 200 can be greatly simplified, thereby reducing the processing difficulty and processing cost of the smoke hood 200.

[0044] In one embodiment, the flap assembly 1 includes at least two flip panels 11 arranged side by side in the up-down direction, and both ends of each flip panel 11 in the left-right direction are respectively mounted on two mounting plates 3 through mounting shafts 13. The flap driving mechanism 2 drives all flip panels 11 to rotate simultaneously. When the flap assembly 1 is in a closed state, all flip panels 11 are arranged flush and side by side and jointly close the front opening 2021; when the flap assembly 1 is in an open state, two adjacent flip panels 11 are arranged opposite to each other and spaced apart, so that a smoke inlet 204 is formed between the two adjacent flip panels 11.

[0045] This arrangement can increase the width of the front opening 2021 in the vertical direction while reducing the height of a single flip panel 11, thereby reducing the difficulty of processing and carrying the flip panel 11, and reducing the probability of the flip panel 11 colliding with the user or higher cooking utensils and blocking the user's field of view when it is opened, thereby improving the safety and user experience of the flip mechanism 100 and the range hood; at the same time, since at least two flip panels 11 are used to close the smoke inlet 204, the opening area of ​​the smoke inlet 204 can be increased while ensuring that the flip panel 11 will not interfere with the user, especially for side-suction range hoods, the lower edge of the smoke inlet 204 can be brought closer to the stove, thereby improving the oil fume extraction capacity of the range hood.

[0046] like Figure 1 and Figure 2 As shown, in one embodiment, a wind box 300 is provided at the top of the smoke collecting hood 200, and the fan is installed inside the wind box 300. The lower end opening of the wind box 300 is connected to the smoke collecting cavity, and the air inlet of the fan is connected to the inner cavity of the wind box 300. In another embodiment, the fan is installed inside the smoke collecting hood 200.

[0047] like Figure 2 and Figure 3 As shown, in one embodiment, the lower edge of the front opening 2021 is close to the lower end of the smoke hood 200 to increase the size of the front opening 2021 as much as possible, so that the smoke intake port can be set as close to the stove as possible to improve the smoke suction capacity of the range hood; at the same time, this arrangement can increase the exposed range of the interior of the smoke collecting chamber, so that when the flap mechanism 100 is disassembled, the exposed area inside the smoke hood 200 is larger, which greatly improves the convenience of cleaning the inside of the smoke collecting chamber.

[0048] The number of flap panels is preferably 2 to 4, so that the size of a single flip panel 11 is more appropriate. Preferably, three flip panels 11 are provided to increase the total area of ​​the flap assembly 1 while avoiding a reduction in the appearance of the range hood due to a large number of flap assemblies 1.

[0049] like Figure 3 and Figure 4As shown, in order to improve the convenience of assembling the smoke hood 200 and the flap mechanism 100, a mounting portion 31 is provided at the rear end of each mounting plate 3, and the mounting portion 31 is detachably connected to the back plate 203 of the smoke hood 200. Specifically, the back plate 203 and the mounting portion 31 are fastened and connected by fasteners that pass through the back plate 203 and the mounting portion 31 from the back to the front, thereby the back plate 203 and the mounting portion 31 can be fastened or disassembled through the rear side of the back plate 203, thereby improving the convenience of disassembly and assembly of the flap mechanism 100. In other embodiments, the mounting portion 31 can also be detachably connected to the side plate 201 on the corresponding side of the smoke hood 200.

[0050] In one embodiment, the mounting plate 3 is perpendicular to the left-right direction, and the rear side of the mounting plate 3 is vertically folded to form a mounting portion 31, and the mounting portion 31 is detachably connected to the back plate 203 of the smoke hood 200. In other embodiments, the rear end of the mounting plate 3 may be sequentially bent in a direction toward the adjacent side plate 201 to form the mounting portion 31, and the mounting portion 31 is connected to the side plate 201 of the smoke hood 200.

[0051] In one embodiment, only one flap driving mechanism 2 is provided to reduce the overall cost of the flap mechanism 100 and reduce the overall weight of the flap mechanism 100 . In other embodiments, a flap driving mechanism 2 is provided on each mounting plate 3 .

[0052] In order to reduce the probability of oil smoke acting on the flap drive mechanism 2, in one embodiment, the mounting plate 3 and the side plate 201 of the smoke hood 200 are spaced apart to form a smoke blocking space between the mounting plate 3 and the side plate 201, and the flap drive mechanism 2 is installed on the side of one mounting plate 3 away from the other mounting plate 3, that is, the flap drive mechanism 2 is installed in the oil blocking space, so that the mounting plate 3 can laterally block the oil smoke from flowing toward the flap drive mechanism 2, thereby reducing the damage of the oil smoke to the flap drive mechanism 2.

[0053] like Figures 4 to 6 As shown, in one embodiment, the flap driving mechanism 2 includes a driving motor 21, a linkage 22 and a swing arm 23; the swing arm 23 is arranged one-to-one corresponding to the flip panel 11, and the first end of each swing arm 23 is fixedly connected to the corresponding installation shaft 13, and the second ends of all the swing arms 23 are pivotally connected to the linkage 22; the driving motor 21 is transmission-connected with the linkage 22, and the driving motor 21 can actuate all the swing arms 23 to rotate around the rotation axis of the corresponding installation shaft 13 through the linkage 22, so that all the flip panels 11 rotate synchronously around the corresponding rotation axis, thereby switching the flap assembly 1 between the open state and the closed state.

[0054] By adopting a driving structure in which a driving motor 21 cooperates with a linkage 22 and a plurality of swing arms 23, a driving motor 21 can be used to drive a plurality of flip panels 11 to rotate synchronously, thereby ensuring the synchronization of the rotation of the plurality of flip panels 11, improving the operational reliability of the flip mechanism 100, and effectively reducing the driving cost; at the same time, the above-mentioned flip drive mechanism 2 has a simple structural setting, occupies a small space and has a low cost. In order to reduce the interference between the driving motor 21 and the flip assembly 1, in one embodiment, the linkage 22 extends in the up-down direction, and the driving motor 21 is installed on the side of the linkage 22 away from the flip assembly 1. This setting can shorten the distance between the linkage 22 and the flip assembly 1, thereby reducing the distance between the mounting shaft 13 and the linkage 22, reducing the length of the swing arm 23, and effectively avoiding the collision between the driving motor 21 and the flip panel 11.

[0055] like Figure 4 , Figure 6 and Figure 7 As shown, in one embodiment, the motor housing of the driving motor 21 is mounted on the mounting plate 3, and the motor shaft 211 extends in the left-right direction and extends out of the motor housing away from the mounting plate 3. The flap driving mechanism 2 also includes a connecting rod transmission assembly 24, through which the motor shaft 211 and the linkage member 22 are connected in transmission, the first end of the connecting rod transmission assembly 24 is fixedly connected to the motor shaft 211, and the second end of the connecting rod transmission assembly 24 is pivotally connected to the linkage member 22. By using the connecting rod transmission assembly 24 to connect the motor shaft 211 and the linkage member 22 in transmission, it is convenient to design and control the trajectory of the linkage member 22 through the structural setting of the connecting rod transmission assembly 24, thereby ensuring the operating reliability of the linkage member 22; at the same time, the space occupied by the connecting rod transmission assembly 24 is small.

[0056] The connecting rod transmission assembly 24 includes an active rocker arm 241 and a driven rocker arm 242. The first end of the active rocker arm 241 is fixedly connected to the motor shaft 211 of the driving motor 21. The second end of the active rocker arm 241 is pivoted to the first end of the driven rocker arm 242 through a first pivot shaft 243. The second end of the driven rocker arm 242 is pivoted to the linkage member 22 through a second pivot shaft 244. The first pivot shaft 243, the second pivot shaft 244 and the motor shaft 211 are all parallel and spaced apart. The motor shaft 211 is parallel and spaced apart from the mounting shaft 13.

[0057] This arrangement enables the active rocker arm 241 and the passive rocker arm 242 to be connected to form a connecting rod transmission structure, so that the rotation of the motor shaft 211 drives the linkage member 22 to swing in the direction close to or away from the motor shaft 211 through the active rocker arm 241 and the passive rocker arm 242, thereby driving the swing arm 23 pivotally connected to the linkage member 22 to swing around the corresponding rotation axis of the installation shaft 13, thereby driving the installation shaft 13 to rotate, and then the rotation of the installation shaft 13 drives the rotation of the flip panel 11. This connecting rod transmission assembly 24 has a simple structure, is easy to design, and occupies a small space.

[0058] In another embodiment, the driving motor 21 may also only drive the linkage member 22 to translate in the up-down direction, and the linkage member 22 and the swing arm 23 cooperate to form a crank slider structure, so that the translational movement of the linkage member 22 in the up-down direction is converted into the rotational movement of the linkage member 22 around the rotation axis of its mounting shaft 13. Among them, the driving motor 21 can drive the linkage member 22 to translate in the up-down direction through a screw nut transmission structure, a gear rack transmission structure or other transmission forms.

[0059] In another embodiment, the connecting rod transmission assembly 24 also includes only an active rocker arm 241, one end of the active rocker arm 241 is fixedly connected to the motor shaft 211, the second end of the active rocker arm 241 is pivoted to the linkage member 22 through a pivot shaft, and the axial distance between the motor shaft 211 and the pivot shaft is L1, and the distance between the connecting axis of the second end of the rocker arm 23 and the linkage member 22 and the axis of the mounting shaft 13 is L2, and L1=L2.

[0060] To simplify the structure, in one embodiment, the active rocker arm 241 and the slave rocker arm 242 are both flat plate structures, and the active rocker arm 241 and the slave rocker arm 242 are perpendicular to the left and right directions, thereby increasing the structural strength and reducing the active rocker arm 241 and the slave rocker arm 242, reducing the probability of deformation and damage of the active rocker arm 241 and the slave rocker arm 242, and increasing the service life of the flap mechanism 100. In other embodiments, the active rocker arm 241 and the slave rocker arm 242 may also adopt a rod-shaped structure.

[0061] like Figure 6 and Figure 7As shown, in order to improve the installation reliability of the active rocker arm 241 and the motor shaft 211, the end of the motor shaft 211 forms a driving shaft 2111, the cross section of the driving shaft 2111 is a non-circular cross section, and a stop step surface is formed between the driving shaft 2111 and the main structure of the motor shaft 211, and the first end of the active rocker arm 241 is provided with a mounting hole, the shape of the mounting hole is adapted to the shape of the driving shaft 2111, and the first end of the active rocker arm 241 is sleeved on the driving shaft 2111 through the mounting hole and abuts against the stop step surface. The end of the driving shaft 2111 is detachably connected to the limiting member 4, and the limiting member 4 can limit the active rocker arm 241 from escaping from the driving shaft 2111. The limiting member 4 is preferably, but not limited to, a latch.

[0062] The outer side of the driving shaft 2111 is cut with an anti-rotation plane 21111, which is vertically connected to the stop step surface, and the anti-rotation plane 21111 is in contact with the hole wall surface of the mounting hole, thereby limiting the relative rotation between the active rocker arm 241 and the motor shaft 211. The anti-rotation plane 21111 is preferably parallel to the extension direction of the active rocker arm 241. In one embodiment, one anti-rotation plane 21111 is provided, that is, the cross section of the driving shaft 2111 is a D-shaped cross section, and the mounting hole is a D-shaped hole. In other embodiments, two anti-rotation planes 21111 may also be provided in parallel and opposite to each other.

[0063] like Figure 7 and Figure 8 As shown, the second end of each swing arm 23 is pivoted to the linkage member 22 through the third pivot shaft 25, and the first pivot shaft 243, the second pivot shaft 244 and the third pivot shaft 25 all include a main shaft portion, and axial limit portions are arranged at both ends of the main shaft portion, and the cross section of the axial limit portion is larger than the cross section of the main shaft portion, and one of the axial limit portions is detachably connected to the main shaft portion. That is, the second end of the active swing arm 241 and the first end of the passive swing arm 242 are sleeved on the main shaft portion of the first pivot shaft 243 and clamped between the two axial limit portions; the main shaft portion of the second pivot shaft 244 passes through the second end of the passive swing arm 242 and the linkage member 22, and the second end of the passive swing arm 242 and the linkage member 22 are clamped between the two axial limit portions of the second pivot shaft 244; the main shaft portion of the third pivot shaft 25 passes through the linkage member 22 and the second end of the swing arm 23, and the linkage member 22 and the second end of the swing arm 23 are clamped between the two axial limit portions of the third pivot shaft 25. This arrangement can ensure the connection convenience and connection reliability between each pivot axis and the corresponding structure.

[0064] like Figure 6 and Figure 8As shown, in one embodiment, the linkage member 22 includes a first plate portion 221, a second plate portion 222 and a third plate portion 223 which are connected in sequence at an angle, the first plate portion 221 and the third plate portion 223 are both opposite to the mounting plate 3 and are arranged at intervals, and the third plate portion 223 is located on the side of the second plate portion 222 away from the mounting plate 3; the first plate portion 221 is connected to the swing arm 23, and the third plate portion 223 is transmission-connected to the drive motor 21. The structural arrangement of the linkage member 22 enables the first plate portion 221 to be arranged close to the mounting plate 3, thereby shortening the required length of the mounting shaft 13, and facilitating the simplification of the structure of the mounting shaft 13 connected to the linkage member 22 and the mounting plate 3; at the same time, a certain distance is provided between the third plate portion 223 and the mounting plate 3, so that the third plate portion 223 can be close to the end position of the motor shaft 211, thereby facilitating the transmission connection between the motor shaft 211 and the linkage member 22.

[0065] The first plate portion 221 is located on the side of the second plate portion 222 facing the flap assembly 1, the third plate portion 223 is located on the side of the second plate portion 222 facing away from the flap assembly 1, and the driving motor 21 is partially located between the third plate portion 223 and the mounting plate 3. As a result, the first plate portion 221 extends in the direction toward the flap assembly 1, which further facilitates the connection between the first plate portion 221 and the flap assembly 1; at the same time, the third plate portion 223 extends in the direction toward the motor shaft 211, avoiding the interference between the third plate portion 223 and the motor housing, shortening the distance between the third plate portion 223 and the motor shaft 211, thereby facilitating the transmission connection between the third plate portion 223 and the motor shaft 211. Preferably, the second plate portion 222 is vertically connected to the first plate portion 221 and the third plate portion 223.

[0066] In order to improve the convenience of connecting the mounting shaft 13 with the flip panel 11, in one embodiment, a mounting seat 12 is provided on the back side of each flip panel 11, and one mounting seat 12 is provided at each end of the flip panel 11 along the left and right directions, and the mounting shaft 13 is fixedly mounted on the mounting seat 12. The mounting seat 12 is preferably located between the two mounting plates 3 to reduce the interference between the mounting seat 12 and the flip drive mechanism 2, and to facilitate the disassembly and assembly between the mounting seat 12 and the mounting shaft 13, thereby improving the disassembly and assembly convenience of the flip mechanism 100. In other embodiments, the mounting seat 12 may also be located on the side of the mounting plate 3 away from the other mounting plate 3.

[0067] The mounting seat 12 includes a fixed plate portion 121 and an ear plate portion 122. The fixed plate portion 121 is attached to and fastened to the back of the flip panel 11. The fixed plate portion 121 is provided with ear plate portions 122 on both opposite sides along the left and right directions, and the mounting shaft 13 is connected to the ear plate portion 122 facing the mounting plate 3. This structural setting of the mounting seat 12 is conducive to achieving the versatility and interchangeability of the mounting seats 12 on both sides, and reducing the processing cost of the mounting seat 12.

[0068] In one embodiment, the mounting shaft 13 includes a first shaft portion 131, a second shaft portion 132, a third shaft portion 133 and a limiting end portion 134 which are sequentially connected along the axial direction, a first step surface is formed between the first shaft portion 131 and the second shaft portion 132, a second step surface is formed between the second shaft portion 132 and the third shaft portion 133, and a third step surface is formed between the third shaft portion 133 and the limiting end portion 134; the cross section of the first shaft portion 131 is a non-circular cross section, an axial hole is provided at the first end of the swing arm 23, and the shape of the axial hole is the same as that of the first shaft portion 131, so as to limit the relative rotation between the swing arm 23 and the mounting shaft 13, the first shaft portion 131 is penetrated through the axial hole and the swing arm 23 abuts against the first step surface; the second shaft portion 132 rotates through the mounting plate 3, and the mounting plate 3 abuts against the second step surface; the third shaft portion 133 is fixed through the ear plate portion 122, and the ear plate portion 122 abuts against the third step surface.

[0069] One end of the first shaft portion 131 away from the second shaft portion 132 is detachably connected to the limiting member 4, and the first end of the swing arm 23 is sandwiched between the first step surface and the limiting member 4 to prevent the swing arm 23 from escaping from the mounting shaft 13. The limiting member 4 can be, but is not limited to, a latch.

[0070] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features 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.

[0071] The specific contents of the above specific implementations only express several implementations of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (200), wherein a front opening (2021) is provided on the front side of the smoke collecting hood (200); A flap mechanism (100) comprises a mounting plate (3), a flap assembly (1) and a flap drive mechanism (2), wherein two mounting plates (3) are arranged at intervals in the left-right direction, and the mounting plate (3) extends from the front opening (2021) into the smoke hood (200) and is detachably connected to the smoke hood (200), the flap assembly (1) comprises a plurality of flip panels (11), the left and right ends of the flip panels (11) are rotatably mounted on the two mounting plates (3) via mounting shafts (13), and the flap drive mechanism (2) is mounted on the mounting plate (3) and drives the flip panels (11) to rotate, so as to realize the switching of the flap assembly (1) between an open state and a closed state; When the flap assembly (1) is in a closed state, the flap assembly (1) closes the front opening (2021); when the flap assembly (1) is in an open state, a portion of the front opening (2021) is exposed to form a smoke inlet (204).

2. The range hood according to claim 1, characterized in that: At least two flip panels (11) are arranged side by side from top to bottom, and the flip panel driving mechanism (2) drives all the flip panels (11) to rotate synchronously; When the flap assembly (1) is in a closed state, all the flip panels (11) are flush and arranged side by side; when the flap assembly (1) is in an open state, two adjacent flip panels (11) are opposite and spaced apart, and the smoke inlet (204) is formed between the two adjacent flip panels (11).

3. The range hood according to claim 2, characterized in that: The flap driving mechanism (2) comprises a driving motor (21), a linkage member (22) and a swing arm (23); the swing arm (23) is arranged one-to-one with the flip panel (11); the first end of the swing arm (23) is fixedly connected to the corresponding mounting shaft (13); the second ends of all the swing arms (23) are pivotally connected to the linkage member (22); the driving motor (21) is transmission-connected to the linkage member (22); the driving motor (21) actuates all the swing arms (23) to rotate around the rotation axis of the corresponding mounting shaft (13) through the linkage member (22), so that the flap assembly (1) switches between the open state and the closed state.

4. The range hood according to claim 3, characterized in that: The motor shaft (211) of the driving motor (21) extends in the left-right direction, the motor shaft (211) and the linkage member (22) are connected in transmission via a connecting rod transmission assembly (24), the first end of the connecting rod transmission assembly (24) is fixedly connected to the motor shaft (211), and the second end of the connecting rod transmission assembly (24) is pivotally connected to the linkage member (22); And / or, the driving motor (21) is installed on a side of the linkage member (22) away from the flap assembly (1).

5. The range hood according to claim 4, characterized in that: The connecting rod transmission assembly (24) comprises an active rocker arm (241) and a passive rocker arm (242); the first end of the active rocker arm (241) is fixedly connected to the motor shaft (211); the second end of the active rocker arm (241) is pivotally connected to the first end of the passive rocker arm (242) via a first pivot shaft (243); the second end of the passive rocker arm (242) is pivotally connected to the linkage member (22) via a second pivot shaft (244); the motor shaft (211), the first pivot shaft (243) and the second pivot shaft (244) all extend along the left-right direction and are spaced apart from each other.

6. The range hood according to claim 4, characterized in that: The linkage member (22) comprises a first plate portion (221), a second plate portion (222) and a third plate portion (223) which are connected in sequence at an angle, and the first plate portion (221) and the third plate portion (223) are both arranged opposite to the mounting plate (3); the first plate portion (221) is connected to the swing arm (23), and the third plate portion (223) is drivingly connected to the drive motor (21).

7. The range hood according to claim 6, characterized in that: The first plate portion (221) is located on a side of the second plate portion (222) facing the flap assembly (1), the third plate portion (223) is located on a side of the second plate portion (222) facing away from the flap assembly (1), and the drive motor (21) is partially located between the third plate portion (223) and the mounting plate (3).

8. The range hood according to any one of claims 1 to 7, characterized in that: The flap driving mechanism (2) is located on a side of one mounting plate (3) away from the other mounting plate (3).

9. The range hood according to any one of claims 1 to 7, characterized in that: A mounting seat (12) is provided on the back side of each flip panel (11), the mounting seat (12) is located between the two mounting plates (3), two mounting seats (12) are arranged at intervals along the left-right direction, and the mounting shaft (13) is fixedly mounted on each mounting seat (12), and the mounting shaft (13) is detachably connected to the mounting seat (12) and / or the mounting plate (3).

10. The range hood according to any one of claims 1 to 7, characterized in that: A mounting portion (31) is provided on a side of each mounting plate (3) away from the flap assembly (1), and the mounting portion (31) is detachably connected to a back plate (203) of the smoke collecting hood (200).

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