Range hood

Abstract

The utility model discloses a range hood. The range hood comprises a range hood main body, a baffle assembly and a driving assembly, the range hood body is provided with a top plate and a telescopic inner cavity located above the top plate, and the telescopic inner cavity is provided with an outlet facing the user side. The baffle assembly is arranged in the telescopic inner cavity, and when the baffle assembly is located in the telescopic inner cavity, the first end faces the outer side, and the second end faces the inner side; the driving assembly is arranged on the top plate, and the driving end is connected with the baffle assembly; when the range hood is started, the driving assembly drives the baffle assembly to move out of the telescopic inner cavity, after the baffle assembly moves out of the telescopic inner cavity, the first end of the baffle assembly is located below the second end of the baffle assembly, and when the range hood is stopped, the driving assembly enables the baffle assembly to retract into the telescopic inner cavity. After the range hood disclosed by the utility model is started, when flowing forwards to the front end of the range hood main body along the top plate, oil fume is blocked by the drooping part of the baffle plate assembly, then flows downwards along the baffle plate assembly and is sucked to the air suction opening again, so that the escape of the oil fume can be reduced, and the use effect of the range hood is improved.

Description

Technical Field

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

[0002] For ceiling-type range hoods, the air intake is set on the top plate of the range hood. When the exhaust fan is running, negative pressure is formed at the air intake. When the oil smoke flows to the air intake, part of the oil smoke will hit the top plate, flow forward along the top plate, and then escape to a position where it is difficult to be sucked in by the air intake, and then spread to the cooking environment to cause oil fume pollution. Utility Model Content

[0003] The purpose of the present utility model is to provide a range hood, which is used to solve the above technical problems.

[0004] The range hood proposed by the utility model comprises a range hood body, a baffle assembly and a drive assembly; the range hood body comprises a top plate and a telescopic inner cavity located above the top plate, the telescopic inner cavity having an outlet facing the user side; the baffle assembly is arranged in the telescopic inner cavity, and when the baffle assembly is in the telescopic inner cavity, its first end faces outward and its second end faces inward; the drive assembly is arranged on the top plate, and its drive end is connected to the baffle assembly;

[0005] Among them, when the range hood is started, the driving assembly drives the baffle assembly to move out of the telescopic inner cavity. After the baffle assembly moves out of the telescopic inner cavity, its first end is located below the second end. When the range hood is turned off, the driving assembly retracts the baffle assembly into the telescopic inner cavity.

[0006] According to one embodiment of the present invention, an air suction port is provided on the top plate, and a movable plate is slidably connected to the top plate. When the range hood is started, the movable plate opens the air suction port, and when the range hood is turned off, the movable plate closes the air suction port.

[0007] According to one embodiment of the present invention, the movable plate is linked to the baffle assembly. When the range hood is started, the driving assembly drives the baffle assembly to move out of the telescopic inner cavity while driving the movable plate to open the air intake port. When the range hood is turned off, the driving assembly drives the baffle assembly to retract the telescopic inner cavity while driving the movable plate to close the air intake port.

[0008] According to one embodiment of the present utility model, the baffle assembly includes a baffle and a rotating connecting member, the rotating connecting member connects the lower surface of the second end of the baffle and the driving end of the driving assembly, the baffle is rotatably connected to the rotating connecting member, and when the driving assembly drives at least the part connected to the second end of the baffle to extend out of the telescopic inner cavity, the baffle flips downward.

[0009] According to one embodiment of the present invention, the baffle assembly also includes a connecting plate, and the rotating connecting member connects the lower surface of the second end of the baffle and the lower surface of the connecting plate. The driving assembly drives the connecting plate to move, so that the connecting plate drives the baffle to move out of the telescopic inner cavity or retract the telescopic inner cavity.

[0010] According to one embodiment of the present invention, the range hood also includes a telescopic panel assembly, the telescopic panel assembly has an installation cavity, and functional devices are provided in the installation cavity. The telescopic panel assembly is slidably connected to the telescopic inner cavity, the connecting plate of the baffle assembly is connected to the lower surface of the telescopic panel assembly, and the baffle of the baffle assembly is rotatably connected to the connecting plate through a rotating connecting piece. The driving assembly is connected to the telescopic panel assembly, and the driving assembly drives the telescopic panel assembly to extend or retract the telescopic inner cavity. The telescopic panel assembly drives the connecting plate to move, so that the baffle moves out of or retracts the telescopic inner cavity.

[0011] According to one embodiment of the present utility model, the driving assembly includes a reduction motor, a driving gear, a driving rack and a linkage group. The output end of the reduction motor is connected to the driving gear, the driving rack is connected to the telescopic panel assembly, the driving gear is engaged with the driving rack, the linkage group connects the movable plate and the driving rack, and the driving rack drives the movable plate to move through the linkage group.

[0012] According to one embodiment of the present utility model, the moving direction of the movable plate is opposite to that of the baffle assembly, and the linkage group includes a linkage plate, a first rack, a linkage gear and a second rack. The linkage plate is connected to the driving rack and is slidably connected to the top plate. The first rack is provided on the linkage plate, and the second rack is slidably connected to the top plate. The linkage gear is rotatably connected to the top plate and is located between the first rack and the second rack. The linkage gear is engaged with the first rack and the second rack at the same time, and the movable plate is connected to the second rack.

[0013] According to one embodiment of the present invention, the moving directions of the movable plate and the baffle assembly are opposite, and the linkage group includes a linkage gear and a second rack, the second rack is slidably connected to the top plate, the linkage gear is rotatably connected to the top plate and is located between the second rack and the driving rack, the linkage gear is engaged with the second rack and the driving rack at the same time, and the movable plate is connected to the second rack.

[0014] According to one embodiment of the present invention, when the telescopic panel assembly extends out of the telescopic inner cavity, the functional device is located on the outside of the baffle assembly, and the functional device includes an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly. The top plate of the installation cavity is provided with an air curtain inlet hole and / or a detection hole, and the bottom plate of the installation cavity is provided with an air curtain outlet hole and / or a lighting window. When the telescopic panel assembly extends out of the telescopic inner cavity, the portion of the top plate of the installation cavity with the air curtain inlet hole and / or the detection hole extends out of the telescopic inner cavity, and the portion of the bottom plate of the installation cavity with the air curtain outlet hole and / or the lighting window extends to the front side of the baffle.

[0015] Compared with the prior art, the range hood of this utility model has the following advantages:

[0016] When the range hood of the present invention is activated, the drive assembly drives the baffle assembly to extend out of the telescopic inner cavity, causing at least a portion of the baffle assembly to droop relative to the top plate. Thus, when oil smoke that hits the top plate flows forward along the top plate to the front end of the range hood body, it is blocked by the drooping portion of the baffle assembly. The blocked oil smoke can then flow downward along the baffle assembly and be drawn back toward the air intake, thereby reducing the escape of oil smoke and improving the performance of the range hood. When the range hood is deactivated, the drive assembly drives the baffle assembly to retract into the telescopic inner cavity, thereby reducing the space occupied in the kitchen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the range hood of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the range hood of the present invention from another direction;

[0019] Figure 3 This is a structural diagram of the range hood of the present invention from another direction;

[0020] Figure 4 It is a projection diagram of the range hood of the present invention in the startup state;

[0021] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0022] Figure 6 This is a schematic structural diagram of the telescopic panel assembly and the baffle assembly in the present invention;

[0023] Figure 7 This is a schematic diagram of the internal structure of the telescopic inner cavity in the utility model.

[0024] In the figure: 1. Range hood body, 11. Top plate, 111. Air intake, 12. Movable plate, 2. Baffle assembly, 21. Baffle, 22. Rotating connector, 23. Connecting plate, 3. Drive assembly, 31. Reducer motor, 32. Drive gear, 33. Drive rack, 34. Linkage plate, 35. First rack, 36. Linkage gear, 37. Second rack, 4. Telescopic panel assembly, 41. Air curtain inlet, 42. Detection hole, 43. Air curtain outlet, 44. Lighting window, 50. Elastic buffer.

[0025] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0030] The utility model discloses a range hood, such as Figures 1 to 3 As shown, the range hood includes a range hood body 1, a baffle assembly 2 and a drive assembly 3; the range hood body 1 has a top plate 11 and a telescopic inner cavity located above the top plate 11, the telescopic inner cavity having an outlet facing the user side; the baffle assembly 2 is arranged in the telescopic inner cavity, and when the baffle assembly 2 is located in the telescopic inner cavity, its first end faces outward and its second end faces inward; the drive assembly 3 is arranged on the top plate 11, and its drive end is connected to the baffle assembly 2; wherein, when the range hood is started, the drive assembly 3 drives the baffle assembly 2 to move out of the telescopic inner cavity, and after the baffle assembly 2 moves out of the telescopic inner cavity, its first end is located below the second end, and when the range hood is turned off, the drive assembly 3 retracts the baffle assembly 2 into the telescopic inner cavity.

[0031] In this embodiment, the range hood body 1 also includes an air collection box assembly located above the top panel 11. An air intake 111 is defined on the top panel 11, communicating with the smoke collection chamber of the air collection box assembly. Air intake 111 is located at the rear end of the top panel 11, relatively close to the wall, and vertically diagonally above the stovetop gas outlet. A smoke exhaust fan is installed within the smoke collection chamber. When the exhaust fan is in operation, it creates negative pressure at air intake 111, drawing cooking fumes into the smoke collection chamber through air intake 111 and ultimately exhausting them through the exhaust fan.

[0032] In the range hood of this invention, the drive assembly 3 controls the movement of the baffle assembly 2 from the exit of the telescopic chamber or its retraction into the chamber. When the range hood is turned on, the control unit controls the drive assembly 3 to operate, driving the baffle assembly 2 out of the telescopic chamber. When the range hood is turned off, the control unit controls the drive assembly 3 to reverse, driving the baffle assembly 2 back into the chamber. This allows for automatic actuation of the baffle assembly 2, improving the convenience of the range hood.

[0033] Before the range hood is activated, the first end of the baffle assembly 2 is located in front of the second end, and the baffle assembly 2 is positioned horizontally above the top panel 11. When the range hood is activated, the baffle assembly 2 is driven by the drive assembly 3 to move out of the telescopic cavity. It is understood that the first end of the baffle assembly 2 moves out of the telescopic cavity before the second end. After moving out of the telescopic cavity, at least a portion of the baffle assembly 2 hangs downward relative to the top panel 11, so that the first end is located below the second end and the top panel 11. Oil fumes generated by the user's cooking are drawn toward the air intake 111 under the negative pressure of the air intake 111. Some of the oil fumes that hit the top panel 11 flow forward along the top panel 11 to the front end of the range hood body 1. Because the first end of the baffle assembly 2 is located below the top panel 11, this portion of the oil fumes are blocked by the drooping portion of the baffle assembly 2. The blocked oil fumes can then flow downward along the baffle assembly 2 before being drawn back toward the air intake 111, thereby reducing oil fume escape and improving the performance of the range hood. When the range hood is turned off, the baffle assembly 2 is driven by the driving assembly 3 to retract the telescopic inner cavity, thereby reducing the occupation of kitchen space.

[0034] In the smoke machine of the present invention, Figure 1 and Figure 2As shown, a movable plate 12 is slidably connected to the top plate 11. When the range hood is started, the movable plate 12 opens the air intake 111. When the range hood is turned off, the movable plate 12 closes the air intake 111. The movable plate 12 can move relative to the top plate 11, that is, it can move relative to the air intake 111 on the top plate 11. The movable plate 12 can open or close the air intake 111 by sliding. When the range hood is started, the movable plate 12 opens the air intake 111 so that the oil smoke can be normally sucked into the smoke collecting chamber. In the process of the oil smoke flowing into the smoke collecting chamber through the air intake 111, the oil liquid formed by the mixture of oil and water in the oil smoke will adhere to the air intake 111. When the range hood is running, the smoke exhaust fan forms a negative pressure in the smoke collecting chamber, and the oil liquid adhering to the air intake 111 will not drip downwards. When the range hood is turned off, the exhaust fan stops running and the movable plate 12 closes the air inlet 111. Any oil adhering to the air inlet 111, after its gravity overcomes its adhesive force, drips from the air inlet 111 and is caught by the movable plate 12. This prevents the oil from dripping onto the stovetop or the user's cookware, thereby affecting the user experience. Furthermore, closing the air inlet 111 with the movable plate 12 when the range hood is turned off prevents foreign matter such as insects from entering the range hood and affecting its internal components, thereby improving the stability of its internal structure. Furthermore, closing the air inlet 111 with the movable plate 12 when the range hood is turned off also improves the overall appearance of the range hood.

[0035] In the range hood of the present invention, the movable plate 12 is linked to the baffle assembly 2. When the range hood is started, the drive assembly 3 drives the baffle assembly 2 out of the telescopic inner cavity and simultaneously drives the movable plate to open the air inlet 111. When the range hood is shut down, the drive assembly 3 drives the baffle assembly 2 back into the telescopic inner cavity and simultaneously drives the movable plate 12 to close the air inlet 111. Since the movable plate 12 is linked to the baffle assembly 2, the movement of the movable plate 12 and the baffle assembly 2 can be driven by the same set of drive assembly 3, thereby simplifying the driving method and movement control method of the movable plate 12 and the baffle assembly 2, and eliminating a set of power output devices, thereby reducing the overall cost of the range hood.

[0036] In the smoke machine of the present invention, Figures 4 to 6 As shown, the baffle assembly 2 includes a baffle 21 and a rotating connecting member 22. The rotating connecting member 22 connects the lower surface of the second end of the baffle 21 and the driving end of the driving assembly 3. The baffle 21 is rotatably connected to the rotating connecting member 22. When the driving assembly 3 drives at least the part connected to the second end of the baffle 21 to extend out of the telescopic inner cavity, the baffle 21 flips downward.

[0037] The rotating connection member 22 includes a first connection portion and a second connection portion that are hinged to each other. The first connection portion is connected to the driving end of the drive assembly 3, and the second connection portion is connected to the lower surface of the second end of the baffle 21. The second connection portion can be flipped up and down relative to the first connection portion to allow the baffle 21 to switch between a horizontal state and a hanging state.

[0038] When the driving component 3 drives the rotating connecting member 22 to move forward, it will drive the baffle 21 to move forward together. After the first connecting part extends out of the outlet of the telescopic inner cavity, the baffle 21 and the hinge between the first connecting part and the second connecting part should also be located outside the telescopic inner cavity, so that the baffle 21 and the second connecting part can lose the support of the top plate 11, thereby causing the baffle 21 and the second connecting part to flip downward under the action of gravity, so as to achieve the natural drooping of the baffle 21 after extending out of the telescopic inner cavity.

[0039] When the driving component 3 drives the rotating connecting member 22 to retract into the telescopic inner cavity, it will also drive the baffle 21 to move backward. During the process of the baffle component 2 retracting into the telescopic inner cavity, the first connecting part retracts into the telescopic inner cavity first, and then the hinge between the first connecting part and the second connecting part retracts into the telescopic inner cavity. Immediately afterwards, the baffle 21 and the second connecting part flip upward under the abutment of the front edge of the top plate 11, so that the baffle component 2 returns to the horizontal state and enters the telescopic inner cavity.

[0040] In the smoke machine of the present invention, Figures 2 to 4 As shown, the range hood also includes a telescopic panel assembly 4, which has an installation cavity with functional devices arranged in the installation cavity. The telescopic panel assembly 4 is slidably connected to the telescopic inner cavity. The connecting plate of the baffle assembly 2 is connected to the lower surface of the telescopic panel assembly 4. The baffle 21 of the baffle assembly 2 is rotatably connected to the connecting plate via a rotating connector 22. The driving assembly 3 is connected to the telescopic panel assembly 4. The driving assembly 3 drives the telescopic panel assembly 4 to extend or retract into the telescopic inner cavity. The telescopic panel assembly 4 drives the connecting plate to move, so that the baffle 21 moves out of or retracts into the telescopic inner cavity.

[0041] When the range hood is turned on, the functional components extend out of the telescopic cavity along with the retractable panel assembly 4. Once operational, these components assist the range hood in extracting fume, providing other functions such as lighting, creating an air curtain, and monitoring fume concentration. When the range hood is turned off, the functional components cease operation and retract into the telescopic cavity along with the retractable panel assembly, minimizing the space occupied by the functional components when idle and providing a concealed and protected surface.

[0042] The baffle assembly 2 is located below the telescopic panel assembly 4. The upper surface of the connecting plate is connected to the lower surface of the telescopic panel assembly 4. The second connection portion of the rotating connector 22 is connected to the lower surface of the connecting plate. The hinge between the first and second connection portions is located on the front side of the connecting plate. The thickness of the hinge between the first and second connection portions is greater than the thickness of the second connection portion. If the second connection portion is directly connected to the telescopic panel assembly 4, it will be obstructed by the hinge between the first and second connection portions, affecting the stability of the connection. The connecting plate can separate the lower surface of the telescopic panel assembly 4 from the hinge between the first and second connection portions. Since the hinge between the first and second connection portions is located on the front side of the connecting plate, it will not hinder the connection process between the second connection portion and the connecting plate. In this way, the connection area between the second connection portion and the connecting plate and the telescopic panel assembly 4 can be guaranteed, thereby improving the connection strength between the second connection portion and the telescopic panel assembly 4.

[0043] When the range hood is turned on, the control unit controls the drive assembly 3 to operate, thereby promptly driving the telescopic panel assembly 4 to extend out of the telescopic cavity and moving the baffle assembly 2 out of the telescopic cavity. When the range hood is turned off, the control unit controls the drive assembly 3 to operate in the reverse direction, promptly driving the telescopic panel assembly 4 to retract into the telescopic cavity and retracting the baffle assembly 2 back into the telescopic cavity. This enables automatic actuation of the telescopic panel assembly 4 and baffle assembly 2, improving the convenience of the range hood. Because the movement of the baffle assembly 2 out of or into the telescopic cavity is driven by the telescopic panel assembly 4, the control of the actuation and movement of the baffle assembly 2 is simplified.

[0044] In the smoke machine of the present invention, Figure 7 As shown, the driving assembly 3 includes a reduction motor 31, a driving gear 32, a driving rack 33 and a linkage group. The output end of the reduction motor 31 is connected to the driving gear 32, the driving rack 33 is connected to the telescopic panel assembly 4, the driving gear 32 is engaged with the driving rack 33, the linkage group connects the movable plate 12 and the driving rack 33, and the driving rack 33 drives the movable plate 12 to move through the linkage group.

[0045] The reduction motor 31 is a combination of a speed reducer and an electric motor. The output speed of the reduction motor 31 can be adjusted according to actual needs. By controlling the output speed of the reduction motor 31, the movement speed of the telescopic panel assembly 4 can be controlled. The drive gear 32 rotates with the output of the reduction motor 31. The drive gear 32 meshes with the drive rack 33, converting the rotation of the reduction motor 31 output into linear motion of the drive rack 33. This in turn drives the telescopic panel assembly 4 in linear motion. The movement of the drive rack 33 also drives the movable plate 12 through a linkage assembly, allowing the movable plate 12 to move with the telescopic panel assembly 4. For example, when the range hood is started, the output end of the reduction motor 31 rotates forward to drive the telescopic panel assembly 4 to move forward and extend out of the telescopic inner cavity, and drives the movable plate 12 to open the air intake port 111, so that the air intake port 111 and the functional components on the telescopic panel assembly 4 are ready for oil fume treatment; when the range hood is turned off, the output end of the reduction motor 31 rotates reversely to drive the telescopic panel assembly 4 to retract backward into the telescopic inner cavity, and drives the movable plate 12 to close the air intake port 111.

[0046] In the smoke machine of the present invention, Figure 2 and Figure 3 As shown, when the telescopic panel assembly 4 extends out of the telescopic inner cavity, the functional devices are located on the outside of the baffle assembly 2, and the functional devices include an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly. The top plate 11 of the installation cavity is provided with an air curtain inlet hole 41 and / or a detection hole 42, and the bottom plate of the installation cavity is provided with an air curtain outlet hole 43 and / or a lighting window 44. When the telescopic panel assembly 4 extends out of the telescopic inner cavity, the portion of the top plate 11 of the installation cavity with the air curtain inlet hole 41 and / or the detection hole 42 extends out of the telescopic inner cavity, and the portion of the bottom plate of the installation cavity with the air curtain outlet hole 43 and / or the lighting window 44 extends to the front side of the baffle 21.

[0047] When the telescopic panel assembly 4 and the baffle 21 are both extended out of the telescopic inner cavity and the baffle 21 is drooping, the functional device is located in front of the drooping baffle 21, thereby preventing the baffle 21 from affecting the operation of the functional device and ensuring the operating effect of the functional device.

[0048] like Figure 2 and Figure 3As shown, in the embodiment of the present figure, the functional devices include an air curtain assembly, a lighting assembly and an air quality detection assembly. The top plate 11 of the installation cavity is provided with an air curtain inlet hole 4 and a detection hole 42, and the bottom plate of the installation cavity is provided with an air curtain outlet hole 43 and a lighting window 44. When the telescopic panel assembly 4 extends out of the telescopic inner cavity, the portion of the top plate 11 of the installation cavity with the air curtain inlet hole 41 and the detection hole 42 extends out of the telescopic inner cavity, and the portion of the bottom plate of the installation cavity with the air curtain outlet hole 43 and the lighting window 44 extends to the front side of the baffle 21. When the range hood is started, the telescopic panel assembly 4 extends out of the telescopic inner cavity and into position. The air curtain inlet hole 41 corresponding to the air curtain assembly and the detection hole 42 corresponding to the air quality detection module provided on the top wall of the telescopic panel assembly 4 move out to the front side of the baffle assembly 2. The air curtain outlet hole 43 corresponding to the air curtain assembly and the lighting window 44 corresponding to the lighting assembly on the bottom plate of the telescopic panel assembly 4 move out to the front side of the baffle assembly 2. At this time, the lighting assembly among these functional devices can be activated to realize the lighting function, making it easier for the user to see the status of the cooking ingredients. When the exhaust fan is started and the air intake 111 is opened, the air curtain assembly is activated and forms an air curtain between the user and the stove to prevent the escape of oil smoke. The air quality detection module detects the air quality above the top plate 11 of the range hood body 1 in real time to determine the smoke purification effect of the range hood.

[0049] In the smoke machine of the present invention, Figure 7 As shown, the moving direction of the movable plate 12 is opposite to that of the baffle assembly 2, and the linkage group includes a linkage plate 34, a first rack 35, a linkage gear 36 and a second rack 37. The linkage plate 34 is connected to the driving rack 33 and is slidably connected to the top plate 11. The first rack 35 is provided on the linkage plate 34, and the second rack 37 is slidably connected to the top plate 11. The linkage gear 36 is rotatably connected to the top plate 11 and is located between the first rack 35 and the second rack 37. The linkage gear 36 is engaged with the first rack 35 and the second rack 37 at the same time, and the movable plate 12 is connected to the second rack 37.

[0050] The first rack 35 and the second rack 37 are located on opposite sides of the linkage gear 36. As can be seen from the gear transmission characteristics, when the linkage gear 36 rotates, the first rack 35 and the second rack 37 move in opposite directions. When the range hood is started, the drive assembly 3 drives the telescopic panel assembly 4 forward, driving the rack 33 to move the linkage plate 34 forward. The linkage plate 34 then drives the first rack 35 forward, which in turn drives the linkage gear 36 to rotate. The rotation of the linkage gear 36 is then converted into linear motion of the second rack 37, which in turn drives the second rack 37 backward. This, in turn, drives the movable plate 12 backward, thereby opening the air intake 111. When the hood is turned off, the drive assembly 3 drives the telescopic panel assembly 4 backward, driving the rack 33 to drive the linkage plate 34 backward, which in turn drives the first rack 35 backward. The first rack 35 drives the linkage gear 36 to rotate in the opposite direction. The rotation of the linkage gear 36 is then converted into linear motion of the second rack 37, which drives the second rack 37 forward, and the second rack 37 drives the movable plate 12 forward to close the air intake 111. In this way, the telescopic panel assembly 4 and the movable plate 12 can start moving and move into place synchronously.

[0051] like Figure 7 As shown, the rear wall of the telescopic cavity can also be provided with an elastic buffer 50. When the telescopic panel assembly 4 is retracted into the telescopic cavity, the linkage group abuts against the elastic buffer 50. The elastic buffer 50 can play a deceleration and buffering role for the linkage group, preventing the linkage group from directly hitting the rear wall of the telescopic cavity and generating noise.

[0052] In another embodiment, the moving direction of the movable plate 12 is opposite to that of the baffle assembly 2, and the linkage group includes a linkage gear 36 and a second rack 37. The second rack 37 is slidingly connected to the top plate 11, and the linkage gear 36 is rotationally connected to the top plate 11 and is located between the second rack 37 and the driving rack 33. The linkage gear 36 is simultaneously engaged with the second rack 37 and the driving rack 33, and the movable plate 12 is connected to the second rack 37.

[0053] The drive rack 33 and the second rack 37 are located on opposite sides of the linkage gear 36. As can be seen from the gear transmission characteristics, when the linkage gear 36 rotates, the drive rack 33 and the second rack 37 move in opposite directions. When the range hood is started, the drive assembly 3 drives the retractable panel assembly 4 forward, driving the rack 33 forward and rotating the linkage gear 36. This rotation is then converted into linear motion by the second rack 37, which in turn drives the second rack 37 backward, causing the second rack 37 to move the movable plate 12 backward, opening the air intake 111. When the range hood is shut down, the drive assembly 3 drives the retractable panel assembly 4 backward, driving the rack 33 backward and rotating the linkage gear 36 in the opposite direction. This rotation is then converted into linear motion by the second rack 37, which in turn drives the second rack 37 forward, causing the second rack 37 to move the movable plate 12 forward, closing the air intake 111. This ensures that the retractable panel assembly 4 and the movable plate 12 begin and move into position synchronously.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: include: A range hood body (1) having a top plate (11) and a telescopic inner cavity located above the top plate (11), the telescopic inner cavity having an outlet facing the user side; a baffle assembly (2) disposed in the telescopic inner cavity; when the baffle assembly (2) is located in the telescopic inner cavity, its first end faces outward and its second end faces inward; A driving assembly (3) is provided on the top plate (11), and a driving end thereof is connected to the baffle assembly (2); When the range hood is started, the drive assembly (3) drives the baffle assembly (2) to move out of the telescopic inner cavity. After the baffle assembly (2) moves out of the telescopic inner cavity, its first end is located below the second end. When the range hood is turned off, the drive assembly (3) retracts the baffle assembly (2) into the telescopic inner cavity.

2. The range hood according to claim 1, characterized in that: An air suction port (111) is provided on the top plate (11), and a movable plate (12) is slidably connected to the top plate (11); when the range hood is started, the movable plate (12) opens the air suction port (111); when the range hood is shut down, the movable plate (12) closes the air suction port (111).

3. The range hood according to claim 2, characterized in that: The movable plate (12) is linked to the baffle assembly (2). When the range hood is started, the driving assembly (3) drives the baffle assembly (2) to move out of the telescopic inner cavity and drives the movable plate (12) to open the air inlet (111). When the range hood is turned off, the driving assembly (3) drives the baffle assembly (2) to retract into the telescopic inner cavity and drives the movable plate (12) to close the air inlet (111).

4. The range hood according to claim 1, characterized in that: The baffle assembly (2) comprises a baffle (21) and a rotating connection member (22), wherein the rotating connection member (22) connects the lower surface of the second end of the baffle (21) and the driving end of the driving assembly (3), and the baffle (21) is rotatably connected to the rotating connection member (22). When the driving assembly (3) drives at least the portion of the rotating connection member (22) connected to the second end of the baffle (21) to extend out of the telescopic inner cavity, the baffle (21) flips downward.

5. The range hood according to claim 4, characterized in that: The baffle assembly (2) further includes a connecting plate (23), the rotating connecting member (22) connecting the lower surface of the second end of the baffle (21) and the lower surface of the connecting plate (23), and the driving assembly (3) drives the connecting plate (23) to move, so that the connecting plate (23) drives the baffle (21) to move out of the telescopic inner cavity or retract into the telescopic inner cavity.

6. The range hood according to claim 2, characterized in that: The invention also includes a telescopic panel assembly (4), wherein the telescopic panel assembly (4) has an installation cavity, wherein a functional device is provided in the installation cavity, wherein the telescopic panel assembly (4) is slidably connected to the telescopic inner cavity, wherein the connecting plate (23) of the baffle assembly (2) is connected to the lower surface of the telescopic panel assembly (4), wherein the baffle (21) of the baffle assembly (2) is rotatably connected to the connecting plate (23) via a rotating connecting member (22), wherein the driving assembly (3) is connected to the telescopic panel assembly (4), wherein the driving assembly (3) drives the telescopic panel assembly (4) to extend or retract into the telescopic inner cavity, and wherein the telescopic panel assembly (4) drives the connecting plate (23) to move, thereby causing the baffle (21) to move out of or retract into the telescopic inner cavity.

7. The range hood according to claim 6, characterized in that: The driving assembly (3) comprises a reduction motor (31), a driving gear (32), a driving rack (33) and a linkage group. The output end of the reduction motor (31) is connected to the driving gear (32). The driving rack (33) is connected to the telescopic panel assembly (4). The driving gear (32) is meshed with the driving rack (33). The linkage group connects the movable plate (12) and the driving rack (33). The driving rack (33) drives the movable plate (12) to move through the linkage group.

8. The range hood according to claim 7, characterized in that: The movable plate (12) moves in opposite directions to the baffle assembly (2). The linkage group comprises a linkage plate (34), a first rack (35), a linkage gear (36) and a second rack (37). The linkage plate (34) is connected to the driving rack (33) and is slidably connected to the top plate (11). The first rack (35) is provided on the linkage plate (34). The second rack (37) is slidably connected to the top plate (11). The linkage gear (36) is rotatably connected to the top plate (11) and is located between the first rack (35) and the second rack (37). The linkage gear (36) is simultaneously engaged with the first rack (35) and the second rack (37). The movable plate (12) is connected to the second rack (37).

9. The range hood according to claim 7, characterized in that: The moving plate (12) moves in opposite directions to the baffle assembly (2). The linkage group includes a linkage gear (36) and a second rack (37). The second rack (37) is slidably connected to the top plate (11). The linkage gear (36) is rotatably connected to the top plate (11) and is located between the second rack (37) and the driving rack (33). The linkage gear (36) is simultaneously engaged with the second rack (37) and the driving rack (33). The moving plate (12) is connected to the second rack (37).

10. The range hood according to claim 6, characterized in that: When the telescopic panel assembly (4) extends out of the telescopic inner cavity, the functional device is located outside the baffle assembly (2), and the functional device includes an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly. The top plate of the installation cavity is provided with an air curtain air inlet hole (41) and / or a detection hole (42), and the bottom plate of the installation cavity is provided with an air curtain air outlet hole (43) and / or a lighting window (44). When the telescopic panel assembly (4) extends out of the telescopic inner cavity, the portion of the top plate of the installation cavity provided with the air curtain air inlet hole (41) and / or the detection hole (42) extends out of the telescopic inner cavity, and the portion of the bottom plate of the installation cavity provided with the air curtain air outlet hole (43) and / or the lighting window (44) extends to the front side of the baffle (21).

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