Air inlet assembly and range hood using the same

Abstract

The present invention discloses an air inlet assembly, comprising a panel, an air inlet opening is provided on the panel, the air inlet opening comprises a first air inlet area and a second air inlet area arranged in parallel; a baffle assembly comprises a first baffle and a second baffle; a motion mechanism comprises a driving mechanism and a transmission mechanism, the transmission mechanism comprises a first driving rod and a second driving rod, a third driving rod and a fourth driving rod, the first ends of the first driving rod and the second driving rod are respectively rotatably connected to the third driving rod, the second ends of the first driving rod and the second driving rod are respectively rotatably connected to the fourth driving rod, the third driving rod is connected to the first baffle, and the fourth driving rod is connected to the second baffle; the driving mechanism drives the first driving rod and the second driving rod to rotate, so that the first baffle can be moved to block the first air inlet area or to be staggered with the first air inlet area, and the second baffle can be moved to block the second air inlet area or to be staggered with the second air inlet area. A range hood using the above air inlet assembly is also disclosed.

Description

Technical Field

[0001] The invention relates to an oil fume purification device, in particular to an air inlet component and an oil fume extractor using the air inlet component. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Usually, range hoods include top suction type and side suction type. Side suction range hoods use the principle of vortex wind pressure to absorb most of the oil smoke close to the stove in an arc form, which can reduce the adverse effects on human health. In addition, the power source is close to the stove, which basically does not reduce the suction effect of the power source.

[0003] For example, a range hood disclosed in a Chinese patent application numbered 201820960220.2 includes a smoke collecting chamber, a panel structure disposed on the front side of the smoke collecting chamber, an oil filter screen disposed on the panel structure, and an openable and closable smoke baffle covering the outer side of the oil filter screen, and also includes a driving device for driving the smoke baffle.

[0004] The air inlet of the existing range hood can only be in a fully open or fully closed state through the movement of the smoke baffle. When the user cooks on one side, the air volume of the range hood cannot be effectively utilized to effectively absorb the oil smoke, resulting in smoke leakage when the range hood is used for one-sided cooking at a low gear, and the noise is too loud when the range hood is used at a high gear, and efficient and quiet extraction cannot be achieved. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide an air inlet assembly to achieve efficient smoking with lower noise in view of the deficiencies of the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a range hood using the above-mentioned air inlet assembly.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an air inlet assembly, including a panel, an air inlet is opened on the panel, and the air inlet includes a first air inlet area and a second air inlet area arranged in parallel, characterized in that: the air inlet assembly also includes a baffle assembly and a motion mechanism for driving the baffle assembly to move; the baffle assembly includes a first baffle and a second baffle; the motion mechanism includes a driving mechanism and a transmission mechanism, the transmission mechanism transmits the output of the driving mechanism to the first baffle and the second baffle, the transmission mechanism includes a first driving rod and a second driving rod, a third driving rod and a fourth driving rod, the first driving rod and the second driving rod are respectively rotatably connected to the third driving rod, and the first driving rod and the second driving rod are respectively rotatably connected to the third driving rod, and the first driving rod and the second driving rod are respectively rotatably connected to the third driving rod. They are respectively rotatably connected to the fourth drive rod, the third drive rod is also connected and fixed to the first baffle, and both ends of the fourth drive rod are also connected and fixed to the second baffle; the driving mechanism cooperates with at least one of the first drive rod and the second drive rod to drive the first drive rod and the second drive rod to rotate, so that the first baffle can be moved to block the first air inlet area or move to be offset from the first air inlet area, and the second baffle can be moved to block the second air inlet area or move to be offset from the second air inlet area, the first baffle and the second baffle can move toward or leave the corresponding air inlet area at the same time, and the first baffle and the second baffle can also leave the corresponding air inlet area when one of them moves toward the corresponding air inlet area.

[0008] Preferably, in order to enable the first driving rod and the second driving rod to stably drive the two baffles, each driving rod has a first end and a second end opposite to each other, the first ends of the first driving rod and the second driving rod are respectively rotatably connected to the two ends of the third driving rod, the second ends of the first driving rod and the second driving rod are respectively rotatably connected to the two ends of the fourth driving rod, the two ends of the third driving rod are also respectively connected and fixed to the first baffle, and the two ends of the fourth driving rod are also respectively connected and fixed to the second baffle; the first driving rod and the second driving rod, the third driving rod and the fourth driving rod form a quadrilateral.

[0009] Preferably, in order to facilitate the change of the baffle state by simple movement, thereby ensuring the stability of the movement, the transmission mechanism also includes a slider that can move linearly relative to the panel, and the slider is rotatably connected to at least one of the first drive rod and the second drive rod, so that the first baffle and the second baffle move linearly.

[0010] In order to facilitate the movement of the slider and realize the reverse movement and the same direction movement of the two baffles, the driving mechanism also includes an output shaft that can rotate around its own axis and a motor for driving the output shaft to rotate, and the output end of the motor is directly or indirectly connected to the output shaft, thereby driving the output shaft to rotate; a rocker rod driven by the output shaft and capable of swinging back and forth is arranged on the output shaft, and the transmission mechanism also includes a rocker rod and a connecting rod, the rocker rod is arranged on the output shaft and can swing back and forth by the output shaft, the connecting rod has a first end and a second end relative to each other, the first end of the connecting rod is rotationally connected to the rocker rod, and the second end of the connecting rod is rotationally connected to the slider, and the rotation axes of each driving rod, the rocker rod and the connecting rod are parallel to the output shaft.

[0011] In order to ensure stable rotation of the connecting rod, the transmission mechanism also includes a transmission rod, the first end of which is rotationally connected to the connecting rod at a position between the two ends, and the second end of which is rotationally connected to the second driving rod, and the rotation axis of the transmission rod is parallel to the output shaft.

[0012] In order to enable the slider to move stably, the movement mechanism further includes a guide rail connected and fixed to the panel, the guide rail extends along the moving path of each baffle, and the slider is slidably connected to the guide rail.

[0013] Preferably, the size of the first baffle is set to completely block the first air inlet area, and the size of the second baffle is set to completely block the second air inlet area.

[0014] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a range hood using the air inlet assembly as described above, comprising a shell, the panel being arranged on the front side of the shell, and characterized in that: the baffle assembly and the movement mechanism are arranged on the rear side of the panel facing the inside of the shell, and the first air inlet area and the second air inlet area are arranged side by side on the left and right.

[0015] Furthermore, to facilitate opening and closing of the air inlet, the range hood further comprises a smoke baffle for opening and closing the air inlet from the front side of the panel.

[0016] Compared with the prior art, the advantages of the present invention are: by setting a movable baffle, the air intake area corresponding to the baffle can be selectively opened or closed, thereby realizing a reasonable distribution of the air intake volume in the air intake area; when applied to a range hood, when the user cooks on one side and the range hood is started at a low gear, the air intake volume on the non-cooking side is reduced, thereby increasing the air intake speed of the oil smoke on the cooking side, thereby realizing low noise, efficient smoke extraction, reducing energy consumption, achieving silence and preventing smoke leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a range hood in a closed state according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a range hood in a fully open state according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the hidden parts of the range hood;

[0020] Figure 4 for Figure 3 A schematic diagram of a movement mechanism and a baffle assembly of a range hood;

[0021] Figure 5 for Figure 4 A partial exploded schematic diagram of a motion mechanism of a range hood;

[0022] Figure 6 This is a schematic diagram of a range hood in a right-open state according to an embodiment of the present invention;

[0023] Figure 7 for Figure 6 Schematic diagram of the hidden parts of the range hood;

[0024] Figure 8 This is a schematic diagram of a range hood in a left-open state according to an embodiment of the present invention;

[0025] Fig. 9 for Figure 8 Schematic diagram of the hidden parts of the range hood;

[0026] Fig.10 It is a schematic diagram of the range hood in the left and right half-open states according to an embodiment of the present invention;

[0027] Fig.11 for Fig.10 Schematic diagram of the hidden parts of the range hood. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention 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. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0030] See also Figure 1 and Figure 2 A range hood is a side suction range hood, comprising a housing 1 and a panel 2 arranged on the front side of the housing 1. An air inlet 21 is provided on the panel 2, and an oil net assembly 3 is arranged at the air inlet 21. The panel 2 gradually extends backward from top to bottom. A fan system can be arranged in the housing 1, or a fan system can be arranged above the housing 1, and this structure can adopt the existing technology.

[0031] The oil net assembly 3 may be an integrated structure, or may include a first oil net 31 located on the left and a second oil net 32 ​​located on the right, as shown in the present invention. The first oil net 31 and the second oil net 32 ​​are arranged side by side on the left and right, so that the air inlet 21 is correspondingly divided into a first air inlet area 211 located on the left and a second air inlet area 212 located on the right. The first air inlet area 211 and the second air inlet area 212 together constitute a complete integrated air inlet 21. Preferably, the first oil net 31 and the second oil net 32 ​​have the same size, that is, the first air inlet area 211 and the second air inlet area 212 have the same size, presenting a completely symmetrical structure. The first oil net 31 and the second oil net 32 ​​are preferably grille nets, and of course they can be replaced by existing oil nets of other forms. When the oil net assembly 3 is not provided, the air inlet 21 can also be divided into the above-mentioned first air inlet area 211 and the second air inlet area 212.

[0032] See also Figure 3 to Figure 5, a baffle assembly and a motion mechanism for driving the baffle assembly are arranged in the housing 1 and located at the rear side of the panel 2, and the above-mentioned panel 2, baffle assembly and motion mechanism constitute an air inlet assembly. The baffle assembly includes a first baffle 41 and a second baffle 42, the first baffle 41 corresponds to the first air inlet area 211, the second baffle 42 corresponds to the second air inlet area 212, and the first baffle 41 and the second baffle 42 are parallel to the panel 2 respectively. The baffle assembly is closely attached to the panel 2 with only a small gap to facilitate the movement of the baffle assembly. The first baffle 41 and the second baffle 42 have the same structure, and the first baffle 41 and the second baffle 42 are preferably rectangular, and the air inlet 21 is rectangular. Among them, the length of the first baffle 41 is not less than the length of the first air inlet area 211, the height of the first baffle 41 is not less than the height of the first air inlet area 211, the length of the second baffle 42 is not less than the length of the second air inlet area 212, and the height of the second baffle 42 is not less than the height of the second air inlet area 212. Thus, the first baffle 41 can completely block the first air inlet area 211 , and the second baffle 42 can completely block the second air inlet area 212 .

[0033] Here, "length" refers to Figure 3 The height is the left-right dimension shown in Figure 3 The dimensions in the up-down direction are shown in the figure. “Front”, “back”, “left”, “right”, “top” and “right” are all directions relative to the user when the device is in use.

[0034] The motion mechanism can drive the first baffle plate 41 and the second baffle plate 42 to perform lifting motion along the inclined extension direction of the panel 2. The motion mechanism includes a driving mechanism 51 and a transmission mechanism. The driving mechanism 51 includes a motor 511 and an output shaft 512 in this embodiment. The motor 511 can also be replaced by other existing drive devices that can output torque. The output shaft 512 of the driving mechanism 51 extends in the front-to-back direction. The output end of the motor 511 can be directly set to extend in the same direction as the output shaft 511 and directly connected, or the output end of the motor 511 can be set to extend in the left-right direction and connected to the output shaft 512 through the transmission mechanism to achieve the conversion of the output direction. In other words, the above-mentioned output shaft 512 can be directly connected or indirectly connected to the output end of the motor 511, as long as the output shaft 512 is finally extended in the front-to-back direction, and the output shaft 512 can rotate around its own axis under the drive of the motor 511.

[0035] The transmission mechanism includes a swing rod 523, which may be a centrally symmetrical structure or a non-centrally symmetrical structure. When the swing rod 523 is a centrally symmetrical structure, the swing rod 523 is eccentrically connected to the output shaft 512. When the swing rod 523 is a non-centrally symmetrical structure, the swing rod 523 may be connected to the output shaft 512 at any position. Thus, the swing rod 523 may swing back and forth around the output shaft 512. In this embodiment, the swing rod 523 is connected to the front end of the output shaft 512, and the motor 511 is connected to the rear end of the output shaft 512.

[0036] The transmission mechanism also includes a connecting rod 533, a transmission rod 534, a first driving rod 535, a second driving rod 536, a third driving rod 537, a fourth driving rod 538 and a slider 539. Each of the above-mentioned rods has a first end and a second end opposite to each other, and the rotation axis of each rod is parallel to the output shaft 512 of the driving mechanism 51.

[0037] The output shaft 512 of the driving mechanism 51 is rotatably connected to one end of the swing rod 523, and the other end of the swing rod 523 is rotatably connected to the first end of the connecting rod 533, and the second end of the connecting rod 533 is rotatably connected to the lower end of the slider 539. The first driving rod 535 and the second driving rod 536 are equal in length, and the third driving rod 537 and the fourth driving rod 538 are equal in length, and the length of the first driving rod 535 is greater than the length of the third driving rod 537. The first driving rod 535 and the second driving rod 536 are both extended horizontally, and the third driving rod 537 and the fourth driving rod 538 are both extended longitudinally and are consistent with the extension direction of the panel 2. Among them, the first driving rod 535 is arranged above the second driving rod 536, and the first ends of the first driving rod 535 and the second driving rod 536 are respectively rotatably connected to the two ends of the third driving rod 537, and the second ends of the first driving rod 535 and the second driving rod 536 are respectively rotatably connected to the two ends of the fourth driving rod 538, so that the four driving rods form a deformable parallelogram. The two ends of the third driving rod 537 are also connected to the rear side of the first baffle 41, and the two ends of the fourth driving rod 538 are also connected to the rear side of the second baffle 42. The connection position of the third driving rod 537 and the first baffle 41 coincides with the connection position of the corresponding first driving rod 535 and the second driving rod 536, and the connection position of the fourth driving rod 538 and the second baffle 42 coincides with the connection position of the corresponding first driving rod 535 and the second driving rod 536. The third driving rod 557 and the fourth driving rod 558 remain extended on the moving path of the corresponding baffle.

[0038] The upper end of the slider 539 is rotatably connected to the middle of the first drive rod 535, and the lower end of the slider 539 is rotatably connected to the middle of the second drive rod 536. Alternatively, the slider 539 can also be connected to only one of the first drive rod 535 and the second drive rod 536, that is, it only needs to be connected to at least one of the first drive rod 535 and the second drive rod 536. The slider 539 is rotatably connected to the connecting rod 533 and the second drive rod 536 at the same position. The first end of the transmission rod 534 is rotatably connected to the position between the two ends of the connecting rod 533, and the second end of the transmission rod 534 is rotatably connected to the second drive rod 536, and the connection between the transmission rod 534 and the second drive rod 536 can be adjacent to the connection between the slider 539 and the second drive rod 536, and close to the first baffle 41.

[0039] The motion mechanism further includes a first guide rail 529 and a second guide rail 530, which extend longitudinally and are inclined in the same direction as the panel 2. The upper and lower ends of the first guide rail 529 are respectively connected and fixed to the rear side of the panel 2, and the upper and lower ends of the second guide rail 530 are respectively connected and fixed to the rear side of the panel 2. The first guide rail 529 and the second guide rail 530 may be arranged only on one side where the first baffle 41 and the second baffle 42 are close to each other, and do not cooperate with each baffle, but make the slider 539 slidably arranged on the first guide rail 529 and the second guide rail 530. Alternatively, there may be only one first guide rail 529 and one second guide rail 530.

[0040] The rotation axes of the above-mentioned connecting rods, transmission rods and driving rods are parallel to the output shaft 512 of the driving mechanism 51. The length direction of each guide rod is perpendicular to the rotation axis of the corresponding connecting rod, and the length direction of each guide rod is also perpendicular to the moving path of the corresponding baffle.

[0041] The motion mechanism further includes a mounting bracket 53 , which is disposed at a position near the bottom end of the rear side of the panel 2 , and the motor 511 of the driving mechanism 51 is connected and fixed to the rear side of the mounting bracket 53 .

[0042] In this embodiment, the first baffle 41 and the second baffle 42 are located at the rear side of the panel 2 and below the air inlet 21, and can be moved upward to block the air inlet 21, and moved downward to be offset from the air inlet 21. In the present invention, "blocking" means that the projection on the panel 2 has an overlapping area with the air inlet area on the corresponding side, which can be partially overlapped or completely overlapped; "offsetting" means that the projection of the baffle on the panel 2 does not have an overlapping area with the air inlet area on the corresponding side, and cannot block the air inlet of the air inlet area. Alternatively, the mounting bracket 53 and the driving mechanism 51 can also be set at the rear side of the panel 2 above the air inlet 21, and the corresponding parts of the transmission mechanism are also set at the rear side of the panel 2 above the air inlet 21, so that the first baffle 41 and the second baffle 42 are located at the rear side of the panel 2 above the air inlet 21, and can be moved downward to block the air inlet 21.

[0043] See also Figure 1 and Figure 2 The range hood further comprises a smoke shield 6, which can be flipped relative to the panel 2, so as to open or close the air inlet 21 at the front side of the panel 2. The structure of the smoke shield 6 and the driving mechanism of the smoke shield 6 are the same as those in the prior art. Alternatively, the smoke shield 6 can also open or close the air inlet 21 by translation. Figure 1 The smoke baffle 6 is shown in a closed state. Figure 2 The smoke baffle 6 is shown in the open state.

[0044] This embodiment can realize four air inlet states of the air inlet 21:

[0045] See also Figure 2 and Figure 3 , when cooking is performed on both sides of the double-burner cooker, the smoke baffle 6 is opened. At this time, the amount of oil smoke on both sides is large, such as greater than the preset a value, then the first baffle 41 and the second baffle 42 are in the initial state, the first baffle 41 and the second baffle 42 are both located below the air inlet 21, so that the air inlet 21 is in a fully open state, the driving mechanism 51 is not started, the swing rod 523 and the connecting rod 533 are both in a state parallel to the first guide rail 529 (second guide rail 530), and the end of the swing rod 523 connected to the output shaft 512 is on top. In this state (double suction), the difference between the wind speed of the upper and lower ends of the air inlet 21 is relatively small, and the wind speed is relatively uniform.

[0046] See also Fig.10 and Fig.11When cooking is performed on both sides of the double-burner stove, the smoke baffle 6 is opened. At this time, the amount of oil smoke on both sides is not greater than the preset value a. Then the drive mechanism 51 is started to rotate the swing rod 523 by 180°, so that the end of the swing rod 523 connected to the output shaft 512 is at the bottom. Since the connecting rod 533 is connected to the swing rod 523, the connecting rod 533 is pushed upward by the swing rod 523, and then the slider 539 is pushed upward, so that the parallelogram formed by the driving rod is pushed upward as a whole, and then the first baffle 41 and the second baffle 42 are both moved upward, partially blocking the corresponding air inlet area (preferably half-blocking), so that both the left and right sides are in a strong suction state. In this state (double strong suction), the baffle is used to block part of the space at the lower end of the air inlet area, reduce the air inlet speed at the lower end, increase the air inlet speed at the upper end, and change the distribution state of the air inlet wind speed. When the oil smoke is far away from the air inlet 21, it has a better smoking effect than the double suction state.

[0047] See also Figure 6 and Figure 7 When cooking on the right side of the double-burner stove, the smoke baffle 6 is opened. At this time, the amount of oil smoke is larger on the right side, and the driving mechanism 51 is started, so that the swing rod 523 rotates to the left, driving the lower end of the connecting rod 533 to rotate leftward and upward. At this time, the end of the transmission rod 534 connected to the connecting rod 533 is pushed upward (with rotation at the same time) driven by the connecting rod 533, and the slider 539 is pushed upward. Due to the unilateral force, the first driving rod 535 and the second driving rod 536 are respectively rotated to the left and upward around the fourth driving rod 538 under the action of the slider 539 and the transmission rod 534, so that the first baffle 41 moves upward until it blocks the corresponding first air inlet area 211, thereby closing the first air inlet area 211, reducing the flow on the left side, and making the range hood in the right open state, thereby increasing the air intake speed of the oil smoke on the right cooking side. After that, if it is necessary to restore to the initial state, it is only necessary to reverse the motor 511 to make the swing rod 523 return to the initial state (the end connected to the output shaft 512 is at the bottom).

[0048] See also Figure 8 and Fig. 9When cooking on the left side of the double-burner stove, the smoke baffle 6 is opened. At this time, the amount of oil smoke is larger on the right side, and the driving mechanism 51 is started, so that the swing rod 523 rotates to the right, driving the lower end of the connecting rod 533 to rotate rightward and upward. At this time, the end of the transmission rod 534 connected to the connecting rod 533 is pushed upward (with rotation at the same time) driven by the connecting rod 533, and the slider 539 is pushed upward. Due to the unilateral force, the first driving rod 535 and the second driving rod 536 are respectively rotated to the right and upward around the third driving rod 537 under the action of the slider 539 and the transmission rod 534, so that the second baffle 42 moves upward until it blocks the corresponding second air inlet area 212, thereby closing the second air inlet area 212, reducing the flow on the right side, and making the range hood in the left open state, thereby increasing the air intake speed of the oil smoke on the left cooking side. After that, if it is necessary to restore to the initial state, it is only necessary to reverse the motor 511 so that the swing rod 523 returns to the initial state (the end connected to the output shaft 512 is at the bottom).

Claims

1. An air inlet assembly, comprising a panel (2), wherein the panel (2) is provided with an air inlet (21), wherein the air inlet (21) comprises a first air inlet area (211) and a second air inlet area (212) arranged in parallel, wherein: The air inlet assembly also includes a baffle assembly and a motion mechanism for driving the baffle assembly to move; The baffle assembly comprises a first baffle (41) and a second baffle (42); The motion mechanism comprises a driving mechanism (51) and a transmission mechanism, wherein the transmission mechanism transmits the output of the driving mechanism (51) to the first baffle plate (41) and the second baffle plate (42), and the transmission mechanism comprises a first driving rod (535) and a second driving rod (536), a third driving rod (537) and a fourth driving rod (538), wherein the first driving rod (535) and the second driving rod (536) are respectively rotatably connected to the third driving rod (537), and the first driving rod (535) and the second driving rod (536) are respectively rotatably connected to the fourth driving rod (538), wherein the third driving rod (537) is also connected and fixed to the first baffle plate (41), and both ends of the fourth driving rod (538) are also connected and fixed to the second baffle plate (42); The driving mechanism (51) cooperates with at least one of the first driving rod (535) and the second driving rod (536), thereby driving the first driving rod (535) and the second driving rod (536) to rotate, so that the first baffle (41) can be moved to block the first air inlet area (211) or to be offset from the first air inlet area (211), and the second baffle (42) can be moved to block the second air inlet area (212) or to be offset from the second air inlet area (212), the first baffle (41) and the second baffle (42) can move toward or leave the corresponding air inlet area at the same time, and the first baffle (41) and the second baffle (42) can also move toward or leave the corresponding air inlet area when one of them moves toward the corresponding air inlet area; Each driving rod has a first end and a second end opposite to each other. The first ends of the first driving rod (535) and the second driving rod (536) are respectively rotatably connected to the two ends of the third driving rod (537). The second ends of the first driving rod (535) and the second driving rod (536) are respectively rotatably connected to the two ends of the fourth driving rod (538). The two ends of the third driving rod (537) are also respectively connected and fixed to the first baffle plate (41). The two ends of the fourth driving rod (538) are also respectively connected and fixed to the second baffle plate (42). The first driving rod (535), the second driving rod (536), the third driving rod (537) and the fourth driving rod (538) form a quadrilateral. The transmission mechanism further comprises a slider (539) capable of linear motion relative to the panel (2), wherein the slider (539) is rotatably connected to at least one of the first driving rod (535) and the second driving rod (536), thereby causing the first baffle plate (41) and the second baffle plate (42) to perform linear motion; The driving mechanism (51) further comprises an output shaft (512) capable of rotating about its own axis and a motor (511) for driving the output shaft (512) to rotate, wherein the output end of the motor (511) is directly or indirectly connected to the output shaft (512), thereby driving the output shaft (512) to rotate; a swing rod (523) driven by the output shaft (512) to swing back and forth is arranged on the output shaft (512), and the transmission mechanism further comprises the swing rod (523) and a connecting rod (521). The drive rod (533) is a swing rod (523) arranged on the output shaft (512) and can be driven by the output shaft (512) to swing back and forth. The connecting rod (533) has a first end and a second end opposite to each other. The first end of the connecting rod (533) is rotationally connected to the swing rod (523), and the second end of the connecting rod (533) is rotationally connected to the slider (539). The rotation axes of the driving rods, the swing rod (523) and the connecting rod (533) are parallel to the output shaft (512).

2. The air inlet assembly according to claim 1, characterized in that: The transmission mechanism also includes a transmission rod (534), a first end of the transmission rod (534) being rotationally connected to a connecting rod (533) located between the two ends, and a second end of the transmission rod (534) being rotationally connected to a second driving rod (536), and a rotation axis of the transmission rod (534) being parallel to the output shaft (512).

3. The air inlet assembly according to claim 1, characterized in that: The motion mechanism further comprises a guide rail connected and fixed to the panel (2), the guide rail extending along the moving path of each baffle, and the slider (539) being slidably connected to the guide rail.

4. The air inlet assembly according to any one of claims 1 to 3, characterized in that: The size of the first baffle (41) is set to completely block the first air inlet area (211), and the size of the second baffle (42) is set to completely block the second air inlet area (212).

5. A range hood using an air inlet assembly as claimed in any one of claims 1 to 4, comprising a housing (1), wherein the panel (2) is arranged on the front side of the housing (1), and characterized in that: The baffle assembly and the movement mechanism are arranged on the rear side of the panel (2) facing the inside of the shell (1), and the first air inlet area (211) and the second air inlet area (212) are arranged side by side on the left and right.

6. The range hood according to claim 5, characterized in that: The range hood further comprises a smoke baffle (6) for opening and closing the air inlet (21) from the front side of the panel (2).

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