Range hood

Abstract

The utility model discloses a range hood which comprises a range hood body, a telescopic panel assembly, a turning plate assembly, a movable baffle and a driving assembly. When the range hood is started, the driving assembly is started, the telescopic panel assembly stretches out of the telescopic inner cavity and drives the turning plate assembly to move out of the telescopic inner cavity, the movable baffle slides forwards and opens the air suction opening, and when the range hood is stopped, the driving assembly is started, the telescopic panel assembly retracts into the telescopic inner cavity and drives the turning plate assembly to retract into the telescopic inner cavity. The movable baffle moves backwards and closes the air suction opening. When the range hood is started, oil fume catching to the top plate flows forwards to the front end of the range hood main body along the top plate, the oil fume can be blocked by the drooping part of the baffle assembly, and the blocked oil fume can flow downwards along the baffle assembly and then is sucked to the exhaust inlet again, so that the escape of the oil fume can be reduced, and the use effect of the range hood is improved. When the range hood is turned off, the baffle assembly can be retracted into the telescopic inner cavity along with the telescopic panel assembly, and therefore the occupied kitchen space can be reduced.

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 that is used to solve the above technical problems.

[0004] The range hood proposed by the utility model comprises a range hood body, a telescopic panel assembly, a flap assembly, a movable baffle and a driving assembly; the range hood body comprises a top plate and a telescopic inner cavity located above the top plate, and an air suction port is provided on the top plate; the telescopic panel assembly is slidably connected to the telescopic inner cavity; the flap assembly is arranged below the telescopic panel assembly, and as the telescopic panel assembly moves out of or retracts into the telescopic inner cavity, when the flap assembly is in the telescopic inner cavity, its first end faces outward and its second end faces inward; after the flap assembly moves out of the telescopic inner cavity, its first end is located below the second end; the movable baffle is slidably connected below the top plate for opening or closing the air suction port; the driving assembly is arranged on the top plate for driving the telescopic panel assembly and the movable baffle;

[0005] Among them, when the range hood is started, the driving assembly starts, the telescopic panel assembly extends out of the telescopic inner cavity, and drives the flap assembly to move out of the telescopic inner cavity, the movable baffle slides forward and opens the air intake port; when the range hood is turned off, the driving assembly starts, the telescopic panel assembly retracts into the telescopic inner cavity, and drives the flap assembly to retract into the telescopic inner cavity, the movable baffle moves backward and closes the air intake port.

[0006] According to one embodiment of the present invention, the telescopic panel assembly has an installation cavity, in which a functional device is installed. After the telescopic panel assembly extends out of the telescopic inner cavity and the flap assembly moves out of the telescopic inner cavity, the functional device is located on the outside of the flap assembly.

[0007] According to one embodiment of the present invention, the functional device includes an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly, a wind curtain air inlet hole and / or a detection hole is provided on the top plate of the installation cavity, and a wind curtain air outlet hole and / or a lighting window is provided on the bottom plate of the installation cavity. When the telescopic panel assembly extends out of the telescopic inner cavity, the portion of the top plate of the installation cavity provided with the wind curtain air 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 provided with the wind curtain air outlet hole and / or the lighting window extends to the front side of the flap assembly.

[0008] According to one embodiment of the present invention, the flap assembly includes a flap, a rotating connector and a connecting plate. The connecting plate is connected to the lower surface of the telescopic panel assembly. The rotating connector connects the lower surface of the second end of the flap and the lower surface of the connecting plate. After at least the part of the rotating connector connected to the second end of the flap extends out of the telescopic inner cavity, the flap flips downward.

[0009] According to one embodiment of the present invention, the driving assembly starts to drive the movable baffle to move forward only after the flap assembly moves out of the telescopic inner cavity.

[0010] 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 is connected to the movable baffle and the telescopic panel assembly, and after the telescopic panel assembly drives the flip assembly to move out of the telescopic inner cavity, the linkage group drives the movable baffle to move.

[0011] According to one embodiment of the present utility model, a transmission connecting piece is connected to the telescopic panel assembly, and a sliding groove is provided on the transmission connecting piece. The linkage group includes a connecting pin, which is slidably connected to the sliding groove. The sliding groove has a first end close to the telescopic panel assembly and a second end away from the telescopic panel assembly. When the connecting pin is located at the second end of the sliding groove and the telescopic panel assembly moves outside the telescopic inner cavity, the telescopic panel assembly pulls the connecting pin through the transmission connecting piece so that the linkage group drives the mobile baffle to move forward; when the connecting pin is at the first end of the sliding groove and the telescopic panel assembly retracts into the telescopic inner cavity, the telescopic panel assembly pushes the connecting pin through the transmission connecting piece so that the linkage group drives the mobile plate to move backward.

[0012] According to one embodiment of the present invention, an avoidance groove is provided on the top plate, the linkage group is slidably connected above the top plate and is arranged corresponding to the avoidance groove, a baffle bracket is provided on the movable baffle, the baffle bracket is slidably connected in the avoidance groove, and the baffle bracket is connected to the linkage group.

[0013] According to one embodiment of the present invention, the linkage group includes a guide member and a sliding member, the guide member is arranged above the top plate, the sliding member is slidably connected to the guide member, the sliding member is provided with a connecting pin, and the baffle bracket is connected to the sliding member.

[0014] According to one embodiment of the present invention, there are two drive assemblies, and the drive racks of the two drive assemblies are respectively connected to the two sides of the telescopic panel assembly. The two side walls of the telescopic inner cavity are provided with guide assemblies, and the guide assemblies include guide rails and slides. The guide rails are fixedly connected to the two side walls of the telescopic inner cavity, and the slides are slidably connected to the guide rails. The drive racks are connected to the telescopic panel assembly and the slides.

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

[0016] 1. When the range hood of the present invention is activated, the baffle assembly extends out of the telescopic inner cavity and at least partially droops 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 then flows downward along the baffle assembly and is drawn back toward the air intake, thereby reducing oil smoke escape and improving the performance of the range hood. When the range hood is deactivated, the baffle assembly retracts into the telescopic inner cavity along with the telescopic panel assembly, thereby reducing the space occupied in the kitchen.

[0017] 2. With the range hood of the present invention, when the range hood is turned off, the exhaust fan stops running, and the movable plate closes the air intake port. The oil adhering to the air intake port drips from the air intake port after its gravity overcomes the adhesive force and is caught by the movable plate, thereby preventing the oil at the air intake port from dripping onto the stove or the user's cookware and affecting the user experience. Closing the air intake port by the movable plate when the range hood is turned off can also prevent foreign objects such as insects from entering the range hood and affecting the internal components of the range hood, thereby improving the internal structural stability of the range hood. At the same time, closing the air intake port by the movable plate when the range hood is turned off can also improve the appearance integrity of the range hood.

[0018] 3. In the range hood of the present invention, when the range hood is started, the driving assembly drives the telescopic panel assembly, the flap assembly and the movable baffle at the same time, so that the telescopic panel assembly and the flap assembly move out from the telescopic inner cavity and at the same time drive the movable baffle to open the air intake port; when the range hood is turned off, the driving assembly drives the telescopic panel assembly, the flap assembly and the movable baffle at the same time, so that the telescopic panel assembly and the flap assembly retract into the telescopic inner cavity and at the same time drive the movable baffle to close the air intake port. A set of power output devices can realize the telescopic panel assembly, the flap assembly and the movable baffle, thereby reducing the overall cost of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the range hood of the present invention in a startup state;

[0020] Figure 2 This is an exploded view of the structure of the range hood of the present invention in the startup state from another direction;

[0021] Figure 3 This is a projection diagram of the cigarette lighter of the present invention in the closed state;

[0022] Figure 4 It is a projection diagram of the range hood of the present invention in the startup state;

[0023] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic structural diagram of the telescopic panel assembly and the flanging assembly in the present invention;

[0025] Figure 7 It is a cross-sectional schematic diagram of the range hood of the present invention in the startup state;

[0026] Figure 8 This is a schematic diagram of the internal structure of the telescopic inner cavity in the present utility model;

[0027] Figure 9 for Figure 8 A partial enlarged view of point B in the middle.

[0028] In the figure: 1. Range hood body, 11. Top plate, 111. Air intake, 112. Avoidance slot, 2. Telescopic panel assembly, 21. Air curtain inlet, 22. Detection hole, 23. Air curtain outlet, 24. Lighting window, 25. Transmission connector, 251. Sliding slot, 3. Flap assembly, 31. Flap, 32. Rotating connector, 33. Connecting plate, 4. Movable baffle, 41. Baffle bracket, 5. Drive assembly, 51. Reducer motor, 52. Drive gear, 53. Drive rack, 54. Linkage group, 541. Connecting pin, 542. Guide, 543. Sliding member, 6. Guide assembly.

[0029] 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

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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:

[0034] The utility model discloses a range hood, such as Figures 1 to 4 As shown, the range hood includes a range hood body 1, a telescopic panel assembly 2, a flap assembly 3, a movable baffle 4 and a drive assembly 5; the range hood body 1 has a top plate 11 and a telescopic inner cavity located above the top plate 11, and an air inlet 111 is provided on the top plate 11; the telescopic panel assembly 2 is slidably connected to the telescopic inner cavity; the flap assembly 3 is provided below the telescopic panel assembly 2, and as the telescopic panel assembly 2 moves out of or retracts into the telescopic inner cavity, when the flap assembly 3 is in the telescopic inner cavity, its first end faces outward and its second end faces inward; after the flap assembly 3 moves out of the telescopic inner cavity, its first end is located below the second end ; The movable baffle 4 is slidably connected to the bottom of the top plate 11, and is used to open or close the air suction port 111; the driving assembly 5 is arranged on the top plate 11, and is used to drive the telescopic panel assembly 2 and the movable baffle 4; wherein, when the range hood is started, the driving assembly 5 is started, the telescopic panel assembly 2 extends out of the telescopic inner cavity, and drives the flap assembly 3 to move out of the telescopic inner cavity, and the movable baffle 4 slides forward and opens the air suction port 111; when the range hood is turned off, the driving assembly 5 is started, the telescopic panel assembly 2 retracts into the telescopic inner cavity, and drives the flap assembly 3 to retract into the telescopic inner cavity, and the movable baffle 4 moves backward and closes the air suction port 111.

[0035] In this embodiment, the 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's gas outlet. The range hood body 1 also includes an air collection box assembly located above the top panel 11. The air collection box's smoke collection chamber is connected to the air intake 111. A smoke exhaust fan is installed within the smoke collection chamber. When the exhaust fan is in operation, it creates a negative pressure at the air intake 111. Cooking fumes are drawn into the smoke collection chamber through the air intake 111 and ultimately exhausted by the exhaust fan.

[0036] The telescopic panel assembly 2 has an installation cavity, in which functional devices are installed. After the telescopic panel assembly 2 extends out of the telescopic inner cavity and the flap assembly 3 moves out of the telescopic inner cavity, the functional devices are located on the outside of the flap assembly 3. When the range hood is started, the functional devices extend out of the telescopic inner cavity along with the telescopic panel assembly 2. After the functional devices are in operation, they can assist the range hood in absorbing other functions, such as lighting, generating an air curtain, etc. When the range hood is turned off, the functional devices stop operating and retract into the telescopic inner cavity along with the telescopic surface assembly, so as to reduce the space occupied by the functional devices in the kitchen when idle, and to provide hidden protection for the functional devices. When the telescopic panel assembly 2 and the flap assembly 3 are both extended out of the telescopic inner cavity and the flap assembly 3 is drooping, the functional devices are located in front of the drooping flap assembly 3, thereby preventing the flap assembly 3 from affecting the operation of the functional devices and ensuring the operating effect of the functional devices.

[0037] Before the range hood is activated, the first end of the flap assembly 3 is located in front of the second end, and the flap assembly 3 is positioned horizontally above the top panel 11. When the range hood is activated, the drive assembly 5 drives the telescopic panel assembly 2 forward, and the flap assembly 3 extends out of the telescopic cavity along with the telescopic panel assembly 2. It can be understood that the first end of the flap assembly 3 extends out of the telescopic cavity before the second end. After extending out of the telescopic cavity, at least a portion of the flap assembly 3 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 flap assembly 3 is located below the top panel 11, this portion of the oil fumes are blocked by the downward portion of the flap assembly 3. The blocked oil fumes can then flow downward along the flap assembly 3 before being drawn back toward the air intake 111, thereby reducing the escape of oil fumes and improving the performance of the range hood. When the range hood is turned off, the driving assembly 5 drives the telescopic panel assembly 2 to move backward, and the flap assembly 3 retracts into the telescopic inner cavity along with the telescopic panel assembly 2, thereby reducing the occupation of kitchen space.

[0038] The movable baffle 4 can move relative to the top plate 11, that is, it can move relative to the air suction port 111 on the top plate 11. The movable baffle 4 can open or close the air suction port 111 by sliding. When the range hood is started, the driving component 5 drives the telescopic panel component 2 to extend out of the telescopic inner cavity while driving the movable baffle 4 to move and open the air suction port 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 suction port 111, the oil liquid formed by the mixture of oil and water in the oil smoke will adhere to the air suction port 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 suction port 111 will not drip downwards. When the range hood is turned off, the exhaust fan stops running. The drive assembly 5 drives the telescopic panel assembly 2 to retract into the telescopic inner cavity while driving the movable baffle 4 to close the air inlet 111. After the gravity of the oil adhering to the air inlet 111 overcomes the adhesive force, it drips from the air inlet 111 and is caught by the movable baffle 4, preventing the oil from dripping from the air inlet 111 onto the stove or the user's cooking utensils. It also prevents the oil from dripping out of the air inlet 111 and landing on the stove, affecting the user experience. In addition, closing the air inlet 111 by moving the baffle 4 when the range hood is turned off can also prevent foreign objects such as insects from entering the range hood and affecting the internal components of the range hood, thereby improving the internal structural stability of the range hood. At the same time, closing the air inlet 111 by moving the baffle 4 when the range hood is turned off can also improve the appearance of the range hood.

[0039] In the range hood of the present invention, the functional devices include an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly. An air curtain inlet hole 21 and / or a detection hole 22 is provided on the top plate 11 of the installation cavity, and an air curtain outlet hole 23 and / or a lighting window 24 is provided on the bottom plate of the installation cavity. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, the part of the top plate 11 of the installation cavity with the air curtain inlet hole 21 and / or the detection hole 22 extends out of the telescopic inner cavity, and the part of the bottom plate of the installation cavity with the air curtain outlet hole 23 and / or the lighting window 24 extends to the front side of the flap assembly 3.

[0040] like Figure 1 and Figure 2As shown, in the illustrated embodiment, the functional devices include an air curtain assembly, a lighting assembly and an air quality detection assembly, and an air curtain air inlet hole 21 and a detection hole 22 are provided on the top plate 11 of the installation cavity, and an air curtain air outlet hole 23 and a lighting window 24 are provided on the bottom plate of the installation cavity. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, the portion of the air curtain air inlet hole 21 and the detection hole 22 on the top plate 11 of the installation cavity extends out of the telescopic inner cavity, and the portion of the air curtain air outlet hole 23 and the lighting window 24 on the bottom plate of the installation cavity extends to the front side of the flap assembly 3. When the range hood is started, the telescopic panel assembly 2 extends out of the telescopic inner cavity and into position. The air curtain inlet hole 21 corresponding to the air curtain assembly and the detection hole 22 corresponding to the air quality detection module provided on the top wall of the telescopic panel assembly 2 are moved out to the front side of the flap assembly 3. The air curtain outlet hole 23 corresponding to the air curtain assembly and the lighting window 24 corresponding to the lighting assembly on the bottom plate of the telescopic panel assembly 2 are moved out to the front side of the flap assembly 3. At this time, the lighting assembly among these functional devices can be activated to realize the lighting function, making it easier for users to see the status of 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 oil smoke from escaping; the air quality detection module detects the air quality above the top plate 11 in real time to determine the smoke purification effect of the range hood.

[0041] In the smoke machine of the present invention, Figures 4 to 6 As shown, the flap assembly 3 includes a flap 31, a rotating connector 32 and a connecting plate 33. The connecting plate 33 is connected to the lower surface of the telescopic panel assembly 2. The rotating connector 32 connects the lower surface of the second end of the flap 31 and the lower surface of the connecting plate 33. After at least the part of the rotating connector 32 connected to the second end of the flap 31 extends out of the telescopic inner cavity, the flap 31 flips downward.

[0042] The rotating connector 32 includes a first connecting portion and a second connecting portion that are hinged to each other. The first connecting portion is connected to the lower surface of the connecting plate 33, and the second connecting portion is connected to the lower surface of the second end of the flap 31. The second connecting portion can be flipped up and down relative to the first connecting portion to switch the flap 31 between a horizontal position and a drooping position.

[0043] The flap assembly 3 is located below the telescopic panel assembly 2. The upper surface of the connecting plate 33 is connected to the lower surface of the telescopic panel assembly 2. The second connecting portion of the rotating connector 32 is connected to the lower surface of the connecting plate 33. The hinged connection between the first and second connecting portions is located on the front side of the connecting plate 33. The thickness of the hinged connection between the first and second connecting portions is greater than that of the second connecting portion. If the second connecting portion were directly connected to the telescopic panel assembly 2, it would be obstructed by the hinged connection between the first and second connecting portions, affecting the stability of the connection. The connecting plate 33 separates the lower surface of the telescopic panel assembly 2 from the hinged connection between the first and second connecting portions. Because the hinged connection between the first and second connecting portions is located on the front side of the connecting plate 33, it does not hinder the connection between the second connecting portion and the connecting plate 33. This ensures that the connection area between the second connecting portion and the connecting plate 33 and the telescopic panel assembly 2 is sufficient, thereby improving the connection strength between the second connecting portion and the telescopic panel assembly 2.

[0044] Because the rotating connector 32 is connected to the lower surface of the telescopic panel assembly 2, when the telescopic panel assembly 2 moves forward, it will also drive the rotating connector 32 and the flap 31 to move forward together. After the telescopic panel assembly 2 is extended out of the telescopic cavity and the functional components are fully extended out of the telescopic cavity, the flap 31, the second connecting portion, and the hinged joint between the first and second connecting portions should also be located outside the telescopic cavity. This allows the flap 31 and the second connecting portion to lose the support of the top plate 11, allowing the flap 31 and the second connecting portion to flip downward under the action of gravity, allowing the flap 31 and the second connecting portion to naturally droop after being extended out of the telescopic cavity.

[0045] When the telescopic panel assembly 2 retracts into the telescopic inner cavity, it will also drive the rotating connection 32 and the flap 31 to move backward together. In the process of the flap assembly 3 retracting into the telescopic inner cavity, the first connection part retracts into the telescopic inner cavity first, and then the hinge between the first connection part and the second connection part retracts into the telescopic inner cavity. Immediately afterwards, the flap 31 and the second connection part flip upward under the abutment of the front edge of the top plate 11, so that the flap assembly 3 returns to the horizontal state and enters the telescopic inner cavity.

[0046] In the range hood of the present invention, the drive assembly 5 begins to drive the movable baffle 4 forward only after the flap assembly 3 has moved out of the telescopic inner cavity. When the drive assembly 5 drives the telescopic panel assembly 2 forward, the flap assembly 3 moves forward synchronously, while the movable baffle 4 remains stationary. After the flap assembly 3 has moved out of the telescopic inner cavity and partially drooped, the movable baffle 4 then moves forward to open the air intake 111. This ensures that the movable baffle 4 remains at the rear of the flap assembly 3 in a drooped state, preventing the leading edge of the movable baffle 4 from obstructing the drooping of the flap assembly 3 and ensuring that the flap assembly 3 can descend into position.

[0047] In the smoke machine of the present invention, Figures 7 to 9As shown, the driving assembly 5 includes a reduction motor 51, a driving gear 52, a driving rack 53 and a linkage group 54. The output end of the reduction motor 51 is connected to the driving gear 52, the driving rack 53 is connected to the telescopic panel assembly 2, the driving gear 52 is engaged with the driving rack 53, and the linkage group 54 is connected to the movable baffle 4 and the telescopic panel assembly 2. After the telescopic panel assembly 2 drives the flip assembly 3 to move out of the telescopic inner cavity, the linkage group 54 drives the movable baffle 4 to move.

[0048] The reduction motor 51 is an integrated unit of a speed reducer and an electric motor. The output speed of the reduction motor 51 can be adjusted according to actual needs. By controlling the output speed of the reduction motor 51, the movement speed of the telescopic panel assembly 2 can be controlled. The drive gear 52 can rotate with the output end of the reduction motor 51. The drive gear 52 engages with the drive rack 53, and can convert the rotation of the output end of the reduction motor 51 into the linear motion of the drive rack 53, so that the drive rack 53 drives the telescopic panel assembly 2 to move linearly. After the telescopic panel assembly 2 moves out of the telescopic inner cavity, the linkage group 54 drives the movable baffle 4 to move forward, so that the movable baffle 4 can open the air intake 111 after the flap assembly 3 moves out of the telescopic inner cavity.

[0049] After the flap assembly 3 moves out of the telescopic cavity and is in a drooping state, the telescopic panel assembly 2 extends out of the telescopic cavity by a length of L1. At this time, the rear side of the drooping portion of the flap assembly 3 can abut or approach the front edge of the movable baffle 4. Then, the telescopic panel assembly 2 continues to extend from the telescopic cavity and drives the already drooping flap assembly 3 to continue to move forward. At this time, the movable baffle 4 begins to move forward synchronously with the telescopic panel assembly 2, and the two remain in a relatively static state, that is, the movement direction and speed of the two are the same. When the telescopic panel assembly 2 continues to extend out of the telescopic cavity by a length of L2, the telescopic panel assembly 2 is completely extended out of the telescopic cavity, and the distance between the drooping portion of the flap assembly 3 and the opening of the telescopic cavity is L2. The movable baffle 4 opens the air intake 111. At this time, when the smoke exhaust fan is running, the oil smoke will enter the smoke collection chamber through the air intake 111.

[0050] Correspondingly, when the cigarette smoke machine is turned off, the telescopic panel assembly 2 and the flap assembly 3 move backwards before the movable baffle 4. At this time, the telescopic panel assembly 2 and the flap assembly 3 maintain a relative motion with the movable baffle 4, the movable baffle 4 remains stationary, and the air inlet 111 is in an open state. At this time, the drooping portion of the flap assembly 3 will flip upward under the action of the front edge of the movable baffle 4, so that the flap assembly 3 initially returns to a horizontal position. When the telescopic panel assembly 2 moves backward by a displacement of L1, the air inlet 111 is in an open state. The telescopic panel assembly 2 continues to move, and the movable baffle 4 begins to move with the telescopic panel assembly 2. The two remain in a relatively stationary state, and the movement direction and speed of the telescopic panel assembly 2 are the same as those of the movable baffle 4; until the flap assembly 3 completely returns to a horizontal state under the abutment of the front edge of the top plate 11 and is completely retracted into the telescopic inner cavity, the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity, and the movable baffle 4 completely closes the air inlet 111.

[0051] In the smoke machine of the present invention, Figures 7 to 9 As shown, the telescopic panel assembly 2 is connected to a transmission connecting piece 25, and a sliding groove 251 is provided on the transmission connecting piece 25. The linkage group 54 includes a connecting pin 541, which is slidably connected to the sliding groove 251. The sliding groove 251 has a first end close to the telescopic panel assembly 2 and a second end away from the telescopic panel assembly 2. When the connecting pin 541 is located at the second end of the sliding groove 251 and the telescopic panel assembly 2 moves outside the telescopic inner cavity, the telescopic panel assembly 2 pulls the connecting pin 541 through the transmission connecting piece 25 so that the linkage group 54 drives the movable baffle 4 to move forward; when the connecting pin 541 is at the first end of the sliding groove 251 and the telescopic panel assembly 2 retracts into the telescopic inner cavity, the telescopic panel assembly 2 pushes the connecting pin 541 through the transmission connecting piece 25 so that the linkage group 54 drives the movable plate to move backward. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, if the connecting pin 541 is relatively stationary relative to the sliding groove 251, it means that the connecting pin 541 is located at the second end of the sliding groove 251. At this time, the transmission connecting member 25 applies force to the connecting pin 541, so that the linkage group 54 drives the movable baffle 4 to move with the telescopic panel assembly 2; when the telescopic panel assembly 2 retracts into the telescopic inner cavity, if the connecting pin 541 is relatively stationary relative to the sliding groove 251, it means that the connecting pin 541 is located at the first end of the sliding groove 251. At this time, the transmission connecting member 25 applies force to the connecting pin 541, so that the connecting assembly drives the movable baffle 4 to move with the telescopic panel assembly 2.

[0052] The transmission connector 25 is an elongated, plate-like structure with its length oriented along the horizontal opening of the telescopic cavity (i.e., the direction of movement of the telescopic panel assembly 2). The sliding slot 251 extends along the length of the transmission connector 25 and can be a strip or rectangular slot. The connecting pin 541 can be a cylindrical pin, bolt, or similar device with an outer diameter equal to the width of the sliding slot 251. This allows the connecting pin 541 to be restrained by the inner wall of the sliding slot 251, along the width of the slot. This ensures that the connected linkage assembly 54 and movable baffle 4 can only move along the horizontal opening of the telescopic cavity.

[0053] The sliding groove 251 is shown as a strip-shaped groove, and the connecting pin 541 is shown as a cylindrical pin. The sliding groove 251 has a first end close to the telescopic panel assembly 2, specifically the curved inner wall of the sliding groove 251 close to the telescopic panel assembly 2; the sliding groove 251 has a second end away from the telescopic panel assembly 2, specifically the other curved inner wall of the sliding groove 251 away from the telescopic panel assembly 2. The outer diameter of the cylindrical pin is equal to the diameter of the two curved inner walls of the sliding groove 251 to prevent the connecting pin 541 from getting stuck when it abuts the two curved inner walls of the sliding groove 251.

[0054] When the connecting pin 541 slides relatively within the sliding groove 251, the connecting pin 541 slides between the two curved inner walls of the sliding groove 251, which is shown as a strip groove. When the telescopic panel assembly 2 moves and the first end or the second end of the sliding groove 251 applies force to the connecting pin 541, the side surface of the connecting pin 541 abuts against one of the curved inner walls of the sliding groove 251, which is shown as a strip groove.

[0055] When the connecting pin 541 is located at the first end of the sliding slot 251, if the telescopic panel assembly 2 moves in the direction of extending out of the telescopic inner cavity, the movable baffle 4 will maintain a relative movement state with the telescopic panel assembly 2 until the second end of the sliding slot 251 moves to the connecting pin 541. At this time, if the telescopic panel assembly 2 continues to move in the direction of extending out of the telescopic inner cavity, the movable baffle 4 moves with the telescopic panel assembly 2 and keeps the telescopic panel assembly 2 in a relatively stationary state; when the connecting pin 541 is located at the second end of the sliding slot 251, if the telescopic panel assembly 2 moves in the direction of retracting into the telescopic inner cavity, the movable baffle 4 will maintain a relative movement state with the telescopic panel assembly 2 until the first end of the sliding slot 251 moves to the connecting pin 541. At this time, if the telescopic panel assembly 2 continues to move in the direction of retracting into the telescopic inner cavity, the movable baffle 4 moves with the telescopic panel assembly 2 and keeps the telescopic panel assembly 2 in a relatively stationary state.

[0056] The distance between the first end and the second end of the sliding groove 251 is the maximum distance that the telescopic panel assembly 2 moves before the movable baffle 4. The telescopic panel assembly 2 and the movable baffle 4 move relative to each other. When this distance is reached, the connecting pin 541 abuts against the second end from the first end, or abuts against the first end from the second end. If the telescopic panel assembly 2 continues to move, the telescopic panel assembly 2 and the movable baffle 4 move synchronously, and the two remain relatively stationary.

[0057] When the connecting pin 541 is located at the first end of the sliding groove 251, when the telescopic panel assembly 2 moves in the direction of extending out of the telescopic inner cavity, the transmission connecting member 25 does not apply force to the connecting pin 541. At this time, the connecting pin 541 slides relative to the sliding groove 251, and the second end of the sliding groove 251 approaches the connecting groove. After the second end of the sliding groove 251 moves to the connecting pin 541, the telescopic panel assembly 2 continues to move in the direction of extending out of the telescopic inner cavity, the transmission connecting member 25 will apply force to the connecting pin 541, and the transmission connecting member 25 drives the linkage group 54 to move through the connecting pin 541, so that the linkage group 54 drives the movable baffle 4 to move, so that the movable baffle 4 and the telescopic panel assembly 2 remain relatively stationary.

[0058] When the telescopic panel assembly 2 is fully extended from the telescopic inner cavity and the movable baffle 4 opens the air intake port 111, the connecting pin 541 is located at the second end of the sliding slot 251. After shutting down, the telescopic panel assembly 2 begins to move in the direction of retracting into the telescopic inner cavity. At this time, the first end of the sliding slot 251 moves toward the connecting pin 541, and the connecting pin 541 slides relatively in the sliding slot 251. The movable baffle 4 and the telescopic panel assembly 2 move relative to each other. When the first end of the sliding slot 251 moves to the connecting pin 541, when the telescopic panel assembly 2 continues to slide into the telescopic inner cavity, the transmission connecting member 25 will apply force to the connecting pin 541. The transmission connecting member 25 causes the linkage group 54 to drive the movable baffle 4 to move through the connecting pin 541, so that the movable baffle 4 and the telescopic panel assembly 2 remain in a relatively static state.

[0059] In the smoke machine of the present invention, Figure 8 and Figure 9 As shown, an avoidance groove 112 is provided on the top plate 11, the linkage group 54 is slidably connected to the top of the top plate 11 and is arranged corresponding to the avoidance groove 112, and a baffle bracket 41 is provided on the movable baffle 4, the baffle bracket 41 is slidably connected in the avoidance groove 112, and the baffle bracket 41 is connected to the linkage group 54.

[0060] The baffle bracket 41 is vertically arranged and includes a vertical rod and a horizontal plate. The lower end of the vertical rod is fixedly connected to the movable baffle 4, and the upper end passes through the avoidance groove 112 and extends above the top plate 11. The horizontal plate is fixedly connected to the upper end of the vertical rod and is connected to the linkage group 54 by multiple screws. The arrangement of the avoidance groove 112 allows the linkage group 54 to be connected to the movable baffle 4 through the baffle bracket 41. The avoidance arrangement of the avoidance groove 112 allows the avoidance groove 112 to form a movement avoidance for the baffle bracket 41 when the movable baffle 4 and the telescopic panel assembly 2 move synchronously.

[0061] In the smoke machine of the present invention, Figure 8 and Figure 9 As shown, the linkage group 54 includes a guide member 542 and a sliding member 543. The guide member 542 is arranged above the top plate 11. The sliding member 543 is slidably connected to the guide member 542. The sliding member 543 is provided with a connecting pin 541. The baffle bracket 41 is connected to the sliding member 543.

[0062] The guide member 542 can be a long, rectangular rail structure arranged along the horizontal opening of the telescopic inner cavity, and provided with an upwardly opening chute. For example, the guide member 542 can be made of U-shaped steel. The lower end of the sliding member 543 is adapted to be slidably connected to the upwardly opening chute of the guide member 542. Based on the above embodiment, the cross plate of the baffle bracket 41 is connected to the sliding member 543 by multiple screws and is connected to the rear end of the slider 543. The transmission connector 25 is located above the front end of the slider 543. The connecting pin 541 provided at the front end of the slider 543 is slidably connected to the sliding slot 251 of the transmission connector 25. When the movable baffle 4 and the telescopic panel assembly 2 move synchronously, the slider 543 slides relative to the guide member 542 under the drive of the connecting pin 541, and the baffle bracket 41 connected to the slider 543 also slides synchronously, thereby driving the movable baffle 4 to move synchronously through the moving baffle bracket 41.

[0063] In the smoke machine of the present invention, Figure 8 As shown, there are two drive assemblies 5. The drive racks 53 of the two drive assemblies 5 are respectively connected to the two sides of the telescopic panel assembly 2. The two side walls of the telescopic inner cavity are provided with guide assemblies 6. The guide assembly 6 includes guide rails and slide bars. The guide rails are fixedly connected to the two side walls of the telescopic inner cavity, and the slide bars are slidably connected in the guide rails. The drive rack 53 is connected to the telescopic panel assembly 2 and the slide bar. Specifically, the drive rack 53 is fixedly connected to the telescopic panel assembly 2 and the slide bar at the same time. The reduction motor 51 drives the gear 52 to rotate, driving the drive rack 53 to move, thereby causing the telescopic panel assembly 2 connected to the drive rack 53 to move. The slide bar is slidably connected in the guide rail, and indirectly forms a limit on the extension or retraction length of the telescopic panel assembly 2 through the guide rail.

[0064] 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) comprising a top plate (11) and a telescopic inner cavity located above the top plate (11), wherein the top plate (11) is provided with an air intake (111); A telescopic panel assembly (2) slidably connected to the telescopic inner cavity; a flap assembly (3) disposed below the telescopic panel assembly (2) and moving out of or retracting into the telescopic inner cavity as the telescopic panel assembly (2) moves out of or retracts into the telescopic inner cavity; when the flap assembly (3) is located in the telescopic inner cavity, its first end faces outward and its second end faces inward; after the flap assembly (3) moves out of the telescopic inner cavity, its first end is located below the second end; A movable baffle (4) slidably connected to the bottom of the top plate (11) and used for opening or closing the air suction port (111); A driving assembly (5) disposed on the top plate (11) and used to drive the telescopic panel assembly (2) and the movable baffle (4); When the range hood is started, the driving assembly (5) is started, the telescopic panel assembly (2) extends out of the telescopic inner cavity, and drives the flap assembly (3) to move out of the telescopic inner cavity, and the movable baffle (4) slides forward and opens the air inlet (111); when the range hood is turned off, the driving assembly (5) is started, the telescopic panel assembly (2) retracts into the telescopic inner cavity, and drives the flap assembly (3) to retract into the telescopic inner cavity, and the movable baffle (4) moves backward and closes the air inlet (111).

2. The range hood according to claim 1, characterized in that: The telescopic panel assembly (2) has an installation cavity, in which a functional device is installed; after the telescopic panel assembly (2) extends out of the telescopic inner cavity and the flap assembly (3) moves out of the telescopic inner cavity, the functional device is located outside the flap assembly (3).

3. The range hood according to claim 2, characterized in that: The functional device includes an air curtain assembly and / or a lighting assembly and / or an air quality detection assembly; an air curtain air inlet hole (21) and / or a detection hole (22) is provided on the top plate of the installation cavity; an air curtain air outlet hole (23) and / or a lighting window (24) is provided on the bottom plate of the installation cavity; when the telescopic panel assembly (2) extends out of the telescopic inner cavity, the portion of the air curtain air inlet hole (21) and / or the detection hole (22) provided on the top plate of the installation cavity extends out of the telescopic inner cavity; and the portion of the air curtain air outlet hole (23) and / or the lighting window (24) provided on the bottom plate of the installation cavity extends to the front side of the flap assembly (3).

4. The range hood according to claim 1, characterized in that: The flap assembly (3) comprises a flap (31), a rotating connector (32) and a connecting plate (33); the connecting plate (33) is connected to the lower surface of the telescopic panel assembly (2); the rotating connector (32) is connected to the lower surface of the second end of the flap (31) and the lower surface of the connecting plate (33); after at least the portion of the rotating connector (32) connected to the second end of the flap (31) extends out of the telescopic inner cavity, the flap (31) flips downward.

5. The range hood according to claim 1, characterized in that: After the flap assembly (3) moves out of the telescopic inner cavity, the driving assembly (5) starts to drive the movable baffle (4) to move forward.

6. The range hood according to claim 5, characterized in that: The driving assembly (5) comprises a reduction motor (51), a driving gear (52), a driving rack (53) and a linkage group (54). The output end of the reduction motor (51) is connected to the driving gear (52), the driving rack (53) is connected to the telescopic panel assembly (2), the driving gear (52) is meshed with the driving rack (53), and the linkage group (54) is connected to the movable baffle (4) and the telescopic panel assembly (2). After the telescopic panel assembly (2) drives the flap assembly (3) to move out of the telescopic inner cavity, the linkage group (54) drives the movable baffle (4) to move.

7. The range hood according to claim 6, characterized in that: The telescopic panel assembly (2) is connected to a transmission connecting member (25), and the transmission connecting member (25) is provided with a sliding groove (251). The linkage group (54) includes a connecting pin (541), and the connecting pin (541) is slidably connected in the sliding groove (251). The sliding groove (251) has a first end close to the telescopic panel assembly (2) and a second end away from the telescopic panel assembly (2). When the connecting pin (541) is located at the second end of the sliding groove (251) and the telescopic panel assembly ( 2) when moving out of the telescopic inner cavity, the telescopic panel assembly (2) pulls the connecting pin (541) through the transmission connecting member (25) so that the linkage group (54) drives the movable baffle (4) to move forward; when the connecting pin (541) is at the first end of the sliding slot (251) and the telescopic panel assembly (2) retracts into the telescopic inner cavity, the telescopic panel assembly (2) pushes the connecting pin (541) through the transmission connecting member (25) so that the linkage group (54) drives the movable plate to move backward.

8. The range hood according to claim 7, characterized in that: The top plate (11) is provided with an avoidance groove (112), the linkage group (54) is slidably connected above the top plate (11) and is arranged corresponding to the avoidance groove (112), the movable baffle (4) is provided with a baffle bracket (41), the baffle bracket (41) is slidably connected in the avoidance groove (112), and the baffle bracket (41) is connected to the linkage group (54).

9. The range hood according to claim 8, characterized in that: The linkage group (54) includes a guide member (542) and a sliding member (543), wherein the guide member (542) is provided above the top plate (11), the sliding member (543) is slidably connected to the guide member (542), the sliding member (543) is provided with the connecting pin (541), and the baffle bracket (41) is connected to the sliding member (543).

10. The range hood according to claim 6, characterized in that: The number of the driving components (5) is two, and the driving racks (53) of the two driving components (5) are respectively connected to the two sides of the telescopic panel component (2), and the two side walls of the telescopic inner cavity are provided with guide components (6), and the guide components (6) include guide rails and slide bars, the guide rails are fixedly connected to the two side walls of the telescopic inner cavity, and the slide bars are slidably connected in the guide rails, and the driving racks (53) are connected to the telescopic panel component (2) and the slide bars.

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