Range hood

Abstract

The utility model relates to a range hood. When the electric push rod extends, the electric push rod drives the swing piece to swing, and the swing piece correspondingly drives the connecting arm to act so as to drive the smoke barrier to rotate to open the air inlet. On the contrary, when the electric push rod is shortened, the electric push rod drives the swing part to swing reversely, and the swing part correspondingly drives the connecting arm to act so as to drive the smoke barrier to rotate to close the air inlet. The middle transmission assembly comprises the fixing support, the swing part and the connecting arm, the first connecting part of the swing part is located on the rear side of the second connecting part, the second connecting part is always located on the upper side of the mounting part in the driving process, and the projection of the first connecting line and the projection of the second connecting line of the swing part in the left-right direction of the range hood form the acute angle. Compared with the structural form that only an electric push rod is arranged in the prior art, the driving mechanism of the smoke barrier can be reasonably arranged in the exhaust fume collecting hood with the narrow internal space size, and the opening and closing requirements of the smoke barrier can be met.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and particularly to a range hood. Background Art

[0002] A range hood is a common kitchen appliance in daily life and is used to remove the fumes generated during cooking in the kitchen. A range hood with an upper smoke suction port usually is provided with a smoke baffle that can reduce the escape of fumes and a driving mechanism for driving the smoke baffle to open or close. The smoke baffle has an open state and a closed state. When in use, the smoke baffle is opened to facilitate smoke collection, and when not in use, the smoke baffle is closed to keep the range hood clean and reduce space occupation. However, when the internal space size of the smoke collecting hood is small, for example, a range hood with double suction on the top side, it is difficult to arrange its driving mechanism inside the smoke collecting hood with a small space size. When the smoke baffle is in use, most of the structure will be exposed outside the smoke collecting hood, resulting in a reduction in appearance quality and even a situation where the smoke baffle cannot be tightly closed due to movement interference between the driving structures. Summary of the Invention

[0003] The technical problem to be solved by the present application is to provide a range hood that can be reasonably arranged inside a smoke collecting hood with a small internal space size and effectively reduce the volume size exposed outside the smoke collecting hood.

[0004] The above technical problem is solved by the following technical solutions:

[0005] A range hood, the range hood includes a smoke collecting hood provided with a transverse section and a longitudinal section. The transverse section of the smoke collecting hood is provided with an air inlet and a smoke baffle rotatably arranged at the air inlet for opening or closing the air inlet. A driving mechanism for driving the smoke baffle is further provided inside the smoke collecting hood. The driving mechanism of the smoke baffle includes:

[0006] An electric push rod, the rear end of the electric push rod is used for rotatably connecting with the smoke collecting hood; and

[0007] The intermediate drive assembly is located within the transverse section of the smoke collecting hood. The intermediate drive assembly includes a fixed bracket, a swing member, and a connecting arm. The fixed bracket is used to connect with the smoke collecting hood. The swing member is provided with a mounting portion rotatably connected to the fixed bracket, a first connecting portion rotatably connected to the front end of the electric push rod, and a second connecting portion rotatably connected to the rear end of the connecting arm. The first connecting portion is located behind the second connecting portion. The second connecting portion is always located above the mounting portion during the driving process. The front end of the connecting arm is used to rotatably connect with the smoke baffle. Wherein, the line connecting the center of the mounting portion and the center of the first connecting portion is the first line, the line connecting the center of the mounting portion and the center of the second connecting portion is the second line, and the projections of the first line and the second line in the left-right direction of the range hood are arranged at an acute angle.

[0008] The beneficial effects of the driving mechanism of the smoke baffle described in this application compared with the background art:

[0009] For the above-mentioned driving mechanism of the smoke baffle, when the electric push rod extends, the electric push rod drives the swing member to swing, and the swing member correspondingly drives the connecting arm to act so as to drive the smoke baffle to rotate and open the air inlet; conversely, when the electric push rod shortens, the electric push rod drives the swing member to swing in the opposite direction, and the swing member correspondingly drives the connecting arm to act so as to drive the smoke baffle to rotate and close the air inlet. Since the intermediate drive assembly includes a fixed bracket, a swing member, and a connecting arm, the first connecting portion of the swing member is located behind the second connecting portion, the second connecting portion is always located above the mounting portion during the driving process, and the projections of the first line and the second line of the swing member in the left-right direction of the range hood are arranged at an acute angle. Compared with the related art in which the swing member is used as the connecting arm (i.e., the swing member is arranged at an obtuse angle, one end is connected to the electric push rod, and the other end is connected to the smoke baffle) or only an electric push rod is provided and the swing member is only a single swing arm, the driving mechanism of the smoke baffle can be reasonably arranged inside the smoke collecting hood with a narrow internal space size, and can meet the opening and closing requirements of the smoke baffle. In addition, the intermediate drive assembly is located within the transverse section of the smoke collecting hood, which can minimize the volume size of the driving mechanism of the smoke baffle exposed outside the smoke collecting hood.

[0010] In one embodiment, the length of the first line is less than the length of the second line.

[0011] In one embodiment, the swing member is provided with a first limiting portion, and the fixed bracket is provided with a second limiting portion that is in limiting cooperation with the first limiting portion. When the smoke baffle rotates to the open position, the first limiting portion and the second limiting portion are in mutual contact.

[0012] In one embodiment, the swinging member includes a first swinging arm and a second swinging arm; one end of the first swinging arm and one end of the second swinging arm are respectively connected to the mounting portion through a bending portion, so that the first swinging arm and the second swinging arm are away from the mounting plate relative to the mounting portion; a first connecting portion is provided at the other end of the first swinging arm, and a second connecting portion is provided at the other end of the second swinging arm.

[0013] In one embodiment, when the smoke baffle rotates to the open position, the second swinging arm is inclined downward from front to back.

[0014] In one embodiment, the driving mechanism of the smoke baffle further includes a first mounting bracket, and the first mounting bracket is installed at a bead on the back panel of the range hood; the rear end of the electric push rod is rotatably connected to the first mounting bracket.

[0015] In one embodiment, the smoke collecting hood further includes an operation panel, a smoke gathering plate and a condensation plate, and the operation panel, the smoke gathering plate and the condensation plate are connected in sequence from front to back and are arranged at a right angle or an obtuse angle; an air inlet is formed on the smoke gathering plate; a first spaced space is formed between the smoke gathering plate and the top panel of the range hood, and the fixed bracket and the swinging member are arranged in the first spaced space; a second spaced space is formed between the condensation plate and the back panel, the rear end of the electric push rod is arranged in the second spaced space, and the front end of the electric push rod extends into the first spaced space.

[0016] In one embodiment, the electric push rod is inclined to the back panel, and the rear end of the electric push rod is higher than the front end of the electric push rod; and / or, the connection position of the electric push rod and the back panel is located in the middle area in the up-down direction of the back panel.

[0017] In one embodiment, the fixed bracket includes a mounting plate for connecting and fixing with the smoke collecting hood, and a convex hull protruding towards the swinging member is formed on the mounting plate, and the mounting portion is rotatably connected to the convex hull.

[0018] In one embodiment, at least one flanging is provided on the mounting plate, and the flanging is connected and fixed to the inner wall of the smoke collecting hood; and / or, reinforcing ribs are formed on the mounting plate. Description of the Drawings

[0019] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 It is a structural diagram of the smoke baffle of a range hood in an embodiment of the present application rotated to the open position.

[0022] Figure 2 For Figure 1 The enlarged structural diagram at A.

[0023] Figure 3 For Figure 1 The side view of the shown structure after removing the air cabinet.

[0024] Figure 4 It is a structural diagram of the smoke baffle of a range hood in an embodiment of the present application rotated to the closed position.

[0025] Figure 5 For Figure 4 The enlarged structural diagram at B.

[0026] Figure 6 For Figure 4 The side view of the shown structure after removing the air cabinet.

[0027] Figure 7 It is a structural diagram of the intermediate transmission assembly in the closed position in an embodiment of the present application.

[0028] Figure 8 It is a structural diagram of the intermediate transmission assembly in the open position in an embodiment of the present application.

[0029] Reference numerals:

[0030] 10, smoke collecting hood; 11, smoke deflecting plate; 1101, air inlet; 1102, movable hole; 1103, first interval space; 1104, second interval space; 121, operation panel; 122, condensation plate; 13, back panel; 131, bead; 14, top panel; 15, oil cup; 16, smoke baffle; 20, electric push rod; 30, intermediate transmission assembly; 31, fixed bracket; 3101, second limiting part; 311, mounting plate; 3111, convex hull; 3112, first flanging; 3113, second flanging; 3114, reinforcing rib; 32, swinging part; 3201, mounting part; 3202, first connecting part; 3203, second connecting part; 3204, first limiting part; 321, first swinging arm; 322, second swinging arm; 33, connecting arm; 40, first mounting bracket; 50, second mounting bracket. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0032] Refer to Figures 1 to 6 , Figures 1 to 3 which shows the relevant drawings of the smoke baffle 16 of the range hood rotated to the open position. Figures 4 to 6 which shows the relevant drawings of the smoke baffle 16 of the range hood rotated to the closed position. A range hood provided by an embodiment of the present application includes a smoke collecting hood 10 having a horizontal section and a vertical section. The horizontal section of the smoke collecting hood 10 is provided with an air inlet 1101 and a smoke baffle 16 rotatably opened at the air inlet 1101. A driving mechanism for driving the smoke baffle 16 is further provided inside the smoke collecting hood 10. In some embodiments, the smoke collecting hood 10 includes a smoke gathering plate 11, two left and right side panels, a back panel 13, a top panel 14, and an oil cup 15. The top panel 14 is located at the top of the smoke collecting hood 10 and is connected to the smoke gathering plate 11, the two left and right side panels, and the back panel 13 respectively. The oil cup 15 is located at the bottom of the smoke collecting hood 10 and is connected to the back panel 13. The left and right opposite sides of the smoke gathering plate 11 are connected to the two left and right side panels respectively. The smoke gathering plate 11, the top panel 14, and two partial side panels on the left and right form the horizontal section of the smoke collecting hood 10. The air inlet 1101 is specifically formed on the smoke gathering plate 11, and the top end of the smoke baffle 16 is rotatably connected to the smoke gathering plate 11.

[0033] Please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8, specifically, the driving mechanism of the smoke baffle includes an electric push rod 20 and an intermediate transmission assembly 30. The rear end of the electric push rod 20 is used for rotatably connecting with the smoke collecting hood 10. The intermediate transmission assembly 30 includes a fixed bracket 31, a swing member 32 and a connecting arm 33. The fixed bracket 31 is used for connecting with the smoke collecting hood 10. The swing member 32 is provided with a mounting portion 3201 rotatably connected with the fixed bracket 31, a first connecting portion 3202 rotatably connected with the front end of the electric push rod 20, and a second connecting portion 3203 rotatably connected with the rear end of the connecting arm 33. The first connecting portion 3202 is located at the rear side of the second connecting portion 3203, and the second connecting portion 3203 is always located above the mounting portion 3201 during the driving process. An activity hole 1102 corresponding to the connecting arm 33 is further formed on the smoke gathering plate 11. The connecting arm 33 is movably inserted into the activity hole 1102 and extends out of the smoke collecting hood 10 through the activity hole 1102 to be connected with the smoke baffle 16. Wherein, the line connecting the center of the mounting portion 3201 and the center of the first connecting portion 3202 is the first connecting line L1, and the line connecting the center of the mounting portion 3201 and the center of the second connecting portion 3203 is the second connecting line L2. The projections of the first connecting line L1 and the second connecting line L2 in the left-right direction of the range hood are arranged at an acute angle.

[0034] In some embodiments, the included angle β formed by the first connecting line L1 and the second connecting line L2 includes but is not limited to 15°, 30°, 40°, 45°, 50°, 60° or 75°, etc., and can be specifically adjusted and set flexibly according to the actual requirements of the shape of the range hood and the space inside the smoke collecting hood 10.

[0035] For the above-mentioned range hood, when the electric push rod 20 extends, the electric push rod 20 drives the swing member 32 to swing, and the swing member 32 correspondingly drives the connecting arm 33 to act so as to drive the smoke baffle 16 to rotate and open the air inlet 1101, as shown in Figure 2 , Figure 3 ; conversely, when the electric push rod 20 shortens, the electric push rod 20 drives the swing member 32 to swing in the opposite direction, and the swing member 32 correspondingly drives the connecting arm 33 to act so as to drive the smoke baffle 16 to rotate and close the air inlet 1101, as shown in Figure 5 and Figure 6As shown. Since the intermediate transmission assembly 30 includes a fixed bracket 31, a swinging member 32, and a connecting arm 33, the first connecting portion 3202 of the swinging member 32 is located at the rear side of the second connecting portion 3203. The second connecting portion 3203 is always located above the mounting portion 3201 during driving. The swinging member 32 is rotatably disposed on the fixed bracket 31, and the projection of the first connecting line L1 and the second connecting line L2 of the swinging member 32 in the left-right direction of the range hood forms an acute angle. Compared with the related art in which the swinging member 32 is used as the connecting arm 33 (i.e., the swinging member 32 is arranged in an obtuse angle, one end is connected to the electric push rod 20, and the other end is connected to the smoke baffle 16) or only the electric push rod 20 is provided and the swinging member 32 is only a swing arm, it can realize the reasonable arrangement of the driving mechanism of the smoke baffle inside the smoke collecting hood 10 with a small internal space size, and can meet the opening and closing requirements of the smoke baffle 16. In addition, the intermediate transmission assembly is located in the transverse section of the smoke collecting hood, which can minimize the volume size of the driving mechanism of the smoke baffle exposed outside the smoke collecting hood 10.

[0036] Please refer to Figure 2 and Figure 3 , in one embodiment, the rear end of the electric push rod 20 is rotatably connected to the back panel 13 of the smoke collecting hood 10. In this way, by reasonably arranging the position of the electric push rod 20 inside the smoke collecting hood 10, the movement stroke of the electric push rod 20 can be increased, thereby increasing the opening and closing angle of the smoke baffle 16 and realizing that the opening and closing angle of the smoke baffle 16 meets the requirements.

[0037] Please refer to Figure 2 and Figure 3 , specifically, the driving mechanism of the smoke baffle further includes a first mounting bracket 40 mounted on the back panel 13. Optionally, a reinforcing structure such as a bead 131 is provided at the position corresponding to the first mounting bracket 40 on the back panel 13, and the first mounting bracket 40 is connected to the bead 131. The bead 131 includes, but is not limited to, being inclined or parallel to the horizontal plane direction, etc., which can increase the structural strength of the back panel 13, improve the bearing capacity, and further avoid problems such as deformation, drumming, and abnormal noise of the back panel 13 when subjected to pushing and pulling forces. In addition, the rear end of the electric push rod 20 is rotatably connected to the first mounting bracket 40, that is, the rotational connection between the electric push rod 20 and the back panel 13 is indirectly connected. Optionally, the rotational connection method between the rear end of the electric push rod 20 and the first mounting bracket 40 can be either in the form of a combination of a rotating shaft and a limiting pin for easy disassembly and assembly; or in the form of a riveted connection with a stable connection structure; or other methods, which are not limited herein. The rotational connection method between the front end of the electric push rod 20 and the first connecting portion 3202 is similar to the connection method of the rear end of the electric push rod 20. Specifically, for example, it can be in the form of a combination of a rotating shaft and a limiting pin for easy disassembly and maintenance.

[0038] Of course, as some alternative solutions, the rear end of the electric push rod 20 is not limited to being rotatably connected to the back panel 13 in the above embodiments, and can also be connected to other parts of the smoke collecting hood 10, such as being rotatably connected to the left side plate or the right side plate of the smoke collecting hood 10. The specific connection part can be flexibly adjusted and set according to actual needs, and will not be limited herein.

[0039] In some embodiments, the length of the first connecting line L1 is less than the length of the second connecting line L2. It can be understood that, on the one hand, the length of the first connecting line L1 is set relatively smaller than the length of the second connecting line L2, so that the arc length formed after the first connecting line L1 rotates by a certain angle is shorter. In this way, the movement stroke of the electric push rod 20 can be reduced, so that the electric push rod 20 can achieve the required rotation angle of the first connecting line L1 by moving a shorter stroke, and thus the internal space of the smoke collecting hood occupied is smaller; on the other hand, the length of the second connecting line L2 is set relatively larger than the length of the first connecting line L1, so that the arc length formed after the second connecting line L2 rotates by a certain angle is longer. In this way, the movement stroke of the connecting arm 33 can be increased, and then the opening and closing angle of the smoke baffle 16 can be increased to meet the requirements of the opening and closing angle of the smoke baffle 16.

[0040] In some embodiments, the front end of the connecting arm 33 is rotatably connected to the middle part of the smoke baffle 16. In this way, there is a certain distance between the front end of the connecting arm 33 and the rotation center of the smoke baffle 16, which makes it more labor-saving during the opening and closing process; at the same time, when the smoke baffle 16 is in the open state, the connecting arm 33 will not be overly exposed. Optionally, wing smoke baffles (not shown in the figure) for improving the smoke gathering effect are respectively provided on the opposite sides of the smoke baffle 16, and the wing smoke baffles can block the connecting arm 33, thereby improving the appearance quality of the product.

[0041] Specifically, the driving mechanism of the smoke baffle further includes a second mounting bracket 50 mounted on the smoke baffle 16. The front end of the connecting arm 33 is rotatably connected to the second mounting bracket 50, that is, the rotational connection between the front end of the connecting arm 33 and the smoke baffle 16 is indirectly connected. Optionally, the rotational connection between the front end of the connecting arm 33 and the second mounting bracket 50 can be in the form of a combination of a rotating shaft and a limiting pin for easy disassembly and assembly; it can also be in the form of a riveted connection with a stable connection structure; it can also be other ways, which will not be limited herein.

[0042] Optionally, the smoke collecting hood 10 further includes an operation panel 121 and a condensation plate 122. The operation panel 121, the smoke guiding plate 11, and the condensation plate 122 are connected in sequence from front to back and are arranged at a right angle or an obtuse angle. The condensation plate 122, the back panel 13, and the left and right side panels form the longitudinal section of the smoke collecting hood 10. During use, since the operation panel 121 is relatively close to the user, specifically, the operation panel 121 is arranged in the vertical direction so as to face the user directly. Control buttons such as a power switch, a suction capacity level, and a lighting switch are integrated on the operation panel 121. In addition, an air inlet 1101 is formed on the smoke guiding plate 11. Specifically, the smoke guiding plate 11 includes an oil screen, and the air inlet 1101 is formed on the oil screen. An activity hole 1102 corresponding to the connecting arm 33 is formed on the smoke guiding plate 11, and the connecting arm 33 extends outward to the outside of the smoke collecting hood 10 through the activity hole 1102 to be connected to the smoke baffle 16. In addition, the top end of the smoke baffle 16 is rotatably connected to the joint position of the operation panel 121 and the smoke guiding plate 11, and can correspondingly close or open the air inlet 1101 under the drive of the driving mechanism.

[0043] Please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 , in one embodiment, a first spaced space 1103 is formed between the smoke guiding plate 11 and the top panel 14, and the fixing bracket 31 and the swing arm are arranged in the first spaced space 1103. A second spaced space 1104 is formed between the condensation plate 122 and the back panel 13, and the rear end of the electric push rod 20 is arranged in the second spaced space 1104, and the front end of the electric push rod 20 extends into the first spaced space 1103.

[0044] In one embodiment, preferably, the electric push rod 20 is arranged obliquely to the back panel 13, and the rear end of the electric push rod 20 is higher than the front end of the electric push rod 20. Thus, the electric push rod 20 is arranged obliquely, which is beneficial to increasing the movement stroke of the electric push rod 20, thereby increasing the opening and closing angle of the smoke baffle 16 and making the opening and closing angle of the smoke baffle 16 meet the requirements.

[0045] In some embodiments, the connection position of the electric push rod 20 and the back panel 13 is located in the middle area in the up and down direction of the back panel 13. It should be noted that the middle area can be understood as being slightly above or slightly below the middle. Installing in this area can be adapted to a variety of range hoods, and can also prevent the telescopic movement of the electric push rod from being blocked, avoiding interference with the interfaces of the top panel 14 and the condensation plate 122 and affecting the use effect.

[0046] Among them, when the inclination degree of the electric push rod 20 is greater, the distance between the rear end of the electric push rod 20 and the top panel 14 is greater, which is more beneficial to increasing the movement stroke of the electric push rod 20, and at the same time can make full use of the second spaced space 1104.

[0047] It should be noted that when the air inlets are set to two, including an upper air inlet and a lower air inlet, the upper air inlet is arranged on the smoke collecting plate 11, and the lower air inlet is arranged on the condensation plate 122. The arrangement position of the rear end of the electric push rod 20 cannot be too low and needs to be located above the lower air inlet to avoid being exposed at the lower air inlet and affecting the appearance quality of the product.

[0048] In some embodiments, when the smoke baffle 16 rotates to the open position, the included angle a1 formed between the smoke baffle 16 and the smoke collecting plate 11, that is, the opening and closing angle when the smoke baffle 16 rotates from the closed position to the open position, includes but is not limited to 60°, 75°, 90°, 105°, 120°, etc., and can be specifically adjusted and set flexibly according to actual needs. In this embodiment, when the smoke baffle 16 rotates to the open position, the smoke baffle 16 is arranged, for example, in the vertical direction, that is, parallel to the operation panel 121, so as to improve the appearance quality of the product.

[0049] Please refer to Figure 5 and Figure 6 , in some embodiments, when the smoke baffle 16 rotates to the closed position, the smoke baffle 16 closes on the smoke collecting plate 11, so as to block the air inlet 1101. In addition, the included angle a2 formed between the extending direction of the electric push rod 20 and the first connecting line L1, the included angle a2 includes but is not limited to 90°, 100°, 110°, 115°, 120°, 135°, 150°, etc., and can be specifically adjusted and set flexibly according to actual needs. Additionally, the included angle a3 formed between the extending direction of the connecting arm 33 and the second connecting line L2, the included angle a3 includes but is not limited to 20°, 30°, 33°, 35°, 40°, 45°, 50°, etc., and can be specifically adjusted and set flexibly according to actual needs.

[0050] In some embodiments, the installation part 3201 is rotationally connected to the fixed bracket 31 by, for example, riveting, which can not only enable the swing part 32 to be stably installed on the fixed bracket 31, but also rotate and adjust the angular position relative to the fixed bracket 31 under the driving force of the electric push rod 20.

[0051] Please refer to Figure 7 and Figure 8 , in some embodiments, the swing part 32 includes a first swing arm 321 and a second swing arm 322 connected to the first swing arm 321. An installation part 3201 is provided at one end where the first swing arm 321 and the second swing arm 322 are connected to each other, a first connection part 3202 is provided at the other end of the first swing arm 321, and a second connection part 3203 is provided at the other end of the second swing arm 322.

[0052] Among them, the shapes and sizes of the first swing arm 321 and the second swing arm 322 are independently set and adjusted according to actual requirements, including but not limited to straight arms, curved arms, etc., which are not limited herein.

[0053] Please refer to Figure 2 、 Figure 3 、 Figure 7 and Figure 8 In one embodiment, the swing member 32 is provided with a first limiting portion 3204, and the fixed bracket 31 is provided with a second limiting portion 3101 that is in limiting cooperation with the first limiting portion 3204. When the smoke baffle 16 rotates to the open position, the first limiting portion 3204 and the second limiting portion 3101 abut against each other. In this way, each time the smoke baffle 16 rotates to the open position, the first limiting portion 3204 and the second limiting portion 3101 abut against each other, restricting the further rotation and opening of the smoke baffle 16, thereby improving the consistency of the opening and closing angle a1.

[0054] Of course, as some alternative solutions, the first limiting portion 3204 and the second limiting portion 3101 can also be omitted. Specifically, for example, by flexibly adjusting and controlling the maximum movement stroke of the electric push rod 20 to correspondingly adjust the opening and closing angle a1 of the smoke baffle 16. When the electric push rod 20 is fully extended each time, the smoke baffle 16 correspondingly rotates to the fully open position; for another example, by setting an angle sensor to sense the rotation angle position of the smoke baffle 16, and controlling the action of the electric push rod 20 according to the rotation angle position of the smoke baffle 16.

[0055] In one embodiment, the fixed bracket 31 includes a mounting plate 311 for connecting and fixing to the smoke collecting hood 10. The mounting plate 311 is formed with a convex protrusion 3111 protruding towards the swing arm, and the mounting portion 3201 is rotatably connected to the convex protrusion 3111. In this way, an avoidance interval is formed between the swing arm and the rest of the convex protrusion 3111 on the mounting plate 311. During the swinging of the swing arm relative to the mounting plate 311 driven by the electric push rod 20, it can be more smooth and prevent interference from the mounting plate 311.

[0056] In one embodiment, at least one flanging is provided on the mounting plate 311, and the flanging is connected and fixed to the inner wall of the smoke collecting hood 10. Specifically, there are two flangings, including a first flanging 3112 and a second flanging 3113. The first flanging 3112 is connected and fixed to the top panel 14 of the smoke collecting hood 10, and the second flanging 3113 is connected and fixed to the smoke gathering plate 11.

[0057] In one embodiment, a reinforcing rib 3114 is formed on the mounting plate 311, so that the structural strength of the mounting plate 311 can be increased and it is not easily deformed and damaged under force.

[0058] In a specific embodiment, the first limiting portion 3204 is connected to the first swing arm 321. One end of the first swing arm 321 and one end of the second swing arm 322 are respectively connected to the mounting portion 3201 through a bending portion, so that the first swing arm 321 and the second swing arm 322 are far away from the mounting plate 311 relative to the mounting portion 3201, so that during the swinging process of the swing arm, the second swing arm 322 can smoothly avoid the second limiting portion 3101, preventing interference and affecting the flexibility of swinging.

[0059] In some embodiments, when the smoke baffle 16 rotates to the open position, the second swing arm 322 is inclined downward from front to back, so as to guide the oil stain backward to the back panel 13.

[0060] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0061] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0063] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0064] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0065] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0066] The above-described embodiments merely represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this patent application shall be subject to the appended claims.

Claims

1. A range hood, comprising a smoke collecting hood (10) having a transverse section and a longitudinal section, the transverse section of the smoke collecting hood (10) being provided with an air inlet (1101) and a smoke baffle (16) rotatably arranged at the air inlet (1101) for opening or closing the air inlet (1101), the interior of the smoke collecting hood (10) being further provided with a driving mechanism for driving the smoke baffle (16), characterized in that: The driving mechanism of the smoke baffle (16) comprises: An electric push rod (20), the rear end of which is used to be rotatably connected to the smoke collecting hood (10); and The intermediate transmission assembly (30) is located in the transverse section of the smoke hood (10), and the intermediate transmission assembly (30) comprises a fixed bracket (31), a swinging member (32) and a connecting arm (33). The fixed bracket (31) is connected to the smoke hood (10), and the swinging member (32) is provided with a mounting portion (3201) rotatably connected to the fixed bracket (31), a first connecting portion (3202) rotatably connected to the front end of the electric push rod (20), and a second connecting portion (3203) rotatably connected to the rear end of the connecting arm (33). The first connecting portion (3202) is located at the rear side of the second connecting portion (3203), and the second connecting portion (3203) is During the driving process, it is always located on the upper side of the mounting portion (3201), and the front end of the connecting arm (33) is rotatably connected to the smoke baffle (16); wherein, a line connecting the center of the mounting portion (3201) and the center of the first connecting portion (3202) is a first line, and a line connecting the center of the mounting portion (3201) and the center of the second connecting portion (3203) is a second line, and the projections of the first line and the second line in the left and right directions of the range hood are arranged at an acute angle.

2. The range hood according to claim 1, characterized in that: The length of the first connection line is shorter than the length of the second connection line.

3. The range hood according to claim 1, characterized in that: The swinging member (32) is provided with a first limiting portion (3204), and the fixed bracket (31) is provided with a second limiting portion (3101) that cooperates with the first limiting portion (3204) in limiting manner. When the smoke baffle (16) is rotated to the open position, the first limiting portion (3204) and the second limiting portion (3101) abut against each other.

4. The range hood according to claim 1, characterized in that: The swing member (32) comprises a first swing arm (321) and a second swing arm (322); one end of the first swing arm (321) and one end of the second swing arm (322) are respectively connected to the mounting portion (3201) via a bending portion, so that the first swing arm (321) and the second swing arm (322) are away from the fixed bracket (31) relative to the mounting portion (3201); the other end of the first swing arm (321) is provided with the first connecting portion (3202), and the other end of the second swing arm (322) is provided with the second connecting portion (3203).

5. The range hood according to claim 4, characterized in that: When the smoke baffle (16) is rotated to the open position, the second swing arm (322) is arranged to tilt downward from front to back.

6. The range hood according to claim 1, characterized in that: The driving mechanism of the smoke baffle (16) further comprises a first mounting frame (40), the first mounting frame (40) being mounted on a rib (131) on the back panel (13) of the range hood; the rear end of the electric push rod (20) is rotatably connected to the first mounting frame (40).

7. The range hood according to claim 6, characterized in that: The smoke collecting hood (10) further comprises an operating panel (121), a smoke collecting plate (11) and a condensing plate (122), wherein the operating panel (121), the smoke collecting plate (11) and the condensing plate (122) are sequentially connected from front to back and are arranged at right angles or obtuse angles; the smoke collecting plate (11) is formed with the air inlet (1101); the smoke collecting plate (11) and the top panel (14) of the range hood form a first partition space (1103), and the fixed bracket (31) and the swinging member (32) are arranged in the first partition space (1103); the condensing plate (122) and the back panel (13) form a second partition space (1104), the rear end of the electric push rod (20) is arranged in the second partition space (1104), and the front end of the electric push rod (20) extends into the first partition space (1103).

8. The range hood according to claim 6, characterized in that: The electric push rod (20) is arranged obliquely to the back panel (13), and the rear end of the electric push rod (20) is higher than the front end of the electric push rod (20); And / or, the connection between the electric push rod (20) and the back panel (13) is located in the middle area of ​​the back panel (13) in the up-down direction.

9. The range hood according to claim 1, characterized in that: The fixing bracket (31) comprises a mounting plate (311) for being connected and fixed to the smoke collecting hood (10), the mounting plate (311) being formed with a convex bump (3111) protruding toward the swinging member (32), and the mounting portion (3201) being rotatably connected to the convex bump (3111).

10. The range hood according to claim 9, characterized in that: The mounting plate (311) is provided with at least one flange, and the flange is connected and fixed to the inner wall of the smoke collecting hood (10); And / or, reinforcing ribs (3114) are formed on the mounting plate (311).

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