Range hood

Abstract

When the range hood is started, a driving mechanism drives a telescopic panel assembly to move, the part, provided with a functional device, of the telescopic panel assembly extends out of a telescopic inner cavity, and in the moving process of the telescopic panel assembly, a movable baffle and an oil cup can be driven by the driving mechanism to be away from each other so as to open an air suction opening. Therefore, the exhaust inlet can suck oil smoke normally, and functional devices on the telescopic panel assembly can play a role normally. When the range hood is turned off, the driving mechanism drives the telescopic panel assembly to retract into the telescopic inner cavity, and in the retracting process of the telescopic panel assembly, the movable baffle and the oil cup can be driven by the driving mechanism to get close to each other to close the air suction opening, so that oil drops dripping from the air suction opening can flow into the oil cup after being received by the movable baffle. Moving and stopping of the telescopic panel assembly, the movable baffle and the oil cup can be controlled at the same time only by controlling operation and stopping of the driving mechanism, and the control process is simplified.

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 top-suction range hoods, the air intake is set on the top plate of the range hood. During long-term use, oil will be stuck to the air intake. When the range hood is in operation, air flows through the air intake into the air collecting chamber, and the oil hanging on the air intake will not drip. After the range hood is turned off, when the oil droplets formed by the oil are large enough, they will fall from the air intake. In the related art, a movable baffle is set to close the air intake when the range hood is turned off to catch the dripping oil droplets. Some range hoods have a telescopic panel assembly, which is equipped with functional devices such as lighting and air curtain fans. These functional devices are used to improve the user experience of the range hood. However, in the existing art, the movement processes of the telescopic panel assembly and the movable baffle are independent of each other. The movement processes of the telescopic panel assembly and the movable baffle need to be controlled separately, and the control process is relatively complicated. 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 utility model provides a range hood, comprising a range hood body, a telescopic panel assembly, a movable baffle, an oil cup, and a driving mechanism; the range hood body comprises a top plate, a smoke collecting chamber located above the top plate, and a telescopic inner chamber; an air suction port and an oil dripping hole are provided on the top plate, and the air suction port and the oil dripping hole are communicated with the smoke collecting chamber; the telescopic panel assembly is slidably connected to the telescopic inner chamber; the movable baffle is slidably connected to the top plate for opening or closing the air suction port; the oil cup is slidably connected to the top plate, and the opening of its accommodating chamber is always aligned with the oil dripping hole;

[0005] The driving mechanism is arranged on the range hood body. When the range hood is started, the driving mechanism drives the telescopic panel assembly, the movable baffle and the oil cup, so that the telescopic panel assembly extends out of the telescopic inner cavity, the movable baffle and the oil cup move away from each other and the air intake port is opened; when the range hood is turned off, the driving mechanism drives the telescopic panel assembly, the movable baffle and the oil cup, so that the telescopic panel assembly retracts into the telescopic inner cavity, the movable baffle and the oil cup move closer to each other and close the air intake port. When the movable baffle closes the air intake port, the downward projection of the rear edge of the movable baffle falls into the opening of the accommodating cavity of the oil cup.

[0006] According to one embodiment of the present utility model, the driving mechanism includes a driving component, a first linkage component and a second linkage component. The driving component is arranged above the top plate and is used to drive the telescopic panel component. The first linkage component is linked with the driving component to drive the mobile baffle. The second linkage component is linked with the first linkage component to drive the oil cup.

[0007] According to one embodiment of the present invention, the driving assembly includes a driving motor, a driving gear, a driving rack and a first guide member. The driving motor is arranged above the top plate, and its output end is connected to the driving gear. The first guide member is slidably connected to the telescopic inner cavity. The driving rack is connected to the first guide member and meshes with the driving gear. The telescopic panel assembly is connected to the driving rack.

[0008] According to one embodiment of the present invention, the driving assembly and the first linkage assembly synchronously drive the telescopic panel assembly and the movable baffle to move, and the moving speed of the telescopic panel assembly is greater than the moving speed of the movable baffle.

[0009] According to one embodiment of the present invention, the first linkage assembly includes a transmission gear, a transmission rack, a second guide member and a first linkage plate. The transmission gear is connected to the gear shaft of the driving gear, the second guide member is slidably connected to the top plate, the first linkage plate is connected to the second guide member, the transmission rack is connected to the first linkage plate, and the movable baffle is connected to the first linkage plate. When the transmission rack is engaged with the transmission gear, the first linkage plate drives the movable baffle to move, and the wheel diameter R of the driving gear is larger than the wheel diameter r of the transmission gear, R:r=L1:L2, wherein L1 is the displacement of the telescopic panel assembly when it extends / retracts the telescopic inner cavity, and L2 is the displacement of the movable baffle when it opens / closes the air intake port.

[0010] According to one embodiment of the present invention, when the range hood is started, the driving assembly drives the telescopic panel assembly to extend out of the telescopic inner cavity. After the driving assembly drives the telescopic panel assembly to move a displacement of L3, the first linkage assembly drives the movable baffle to move. When the telescopic panel assembly is fully retracted into the telescopic inner cavity, the movable baffle moves a displacement of L2 and fully opens the air intake port. When the range hood is turned off, the driving assembly and the first linkage assembly synchronously drive the telescopic panel assembly and the movable baffle to move. After the telescopic panel assembly and the movable baffle move a displacement of L2, the movable baffle completely closes the air intake port. The driving assembly continues to drive the telescopic panel assembly to move a displacement of L3, and makes the telescopic panel assembly fully retract into the telescopic inner cavity.

[0011] According to one embodiment of the present invention, the first linkage assembly includes a transmission gear, a transmission rack, a second guide and a first linkage plate. The transmission gear is connected to the gear shaft of the driving gear, the second guide is slidably connected to the top plate, the first linkage plate is connected to the second guide, the transmission rack is connected to the first linkage plate, and the movable baffle is connected to the first linkage plate. At the initial start-up of the range hood, the transmission rack is not engaged with the transmission gear. After the telescopic panel assembly moves a displacement of L3, the transmission rack is engaged with the transmission gear, and the first linkage plate drives the movable baffle to move; at the initial shutdown of the range hood, the transmission rack is engaged with the transmission gear. After the telescopic panel assembly and the movable baffle move a displacement of L2, the transmission rack is disengaged from the transmission gear.

[0012] According to one embodiment of the present invention, a linkage drive member is provided on the first guide member. When the range hood is started, after the first guide member moves a displacement L3, the linkage drive member begins to act on the second guide member of the first linkage assembly, and drives the second guide member to move forward, and causes the transmission rack to engage with the transmission gear, and the first linkage assembly is linked with the drive assembly.

[0013] According to one embodiment of the present invention, the second linkage assembly includes a first follower rack, a second follower rack, a follower gear and a third guide member. The first linkage assembly has a first linkage plate, the first follower rack is arranged on the first linkage plate, the third guide member is slidably connected to the top plate, the second follower rack is connected to the third guide member, the follower gear is rotatably connected to the top plate and is located between the first follower rack and the second follower rack, the follower gear is engaged with the first follower rack and the second follower rack at the same time, and the oil cup is connected to the third guide member.

[0014] According to one embodiment of the present utility model, the movable baffle is connected to the first linkage assembly through the baffle bracket, the oil cup is connected to the second linkage assembly through the oil cup hanger, and a first avoidance groove for avoiding the baffle bracket and a second avoidance groove for avoiding the oil cup hanger are provided on the top plate. The baffle bracket is slidably connected to the first avoidance groove, and the oil cup hanger is slidably connected to the second avoidance groove.

[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 started, the drive mechanism drives the telescopic panel assembly to move, causing the portion of the telescopic panel assembly provided with functional components to extend out of the telescopic inner cavity. During the movement of the telescopic panel assembly, the movable baffle and the oil cup can also be driven by the drive mechanism to move away from each other to open the air intake, so that the air intake can normally inhale oil smoke and the functional components on the telescopic panel assembly can function normally. When the range hood is turned off, the drive mechanism drives the telescopic panel assembly to retract into the telescopic inner cavity. During the retraction of the telescopic panel assembly, the movable baffle and the oil cup can also be driven by the drive mechanism to move toward each other to close the air intake, so that oil droplets dripping from the air intake can be received by the movable baffle and flow into the oil cup. Since the telescopic panel assembly, the movable baffle, and the oil cup are driven by the same drive mechanism, it is only necessary to control the operation and stop of the drive mechanism to simultaneously control the movement and stop of the telescopic panel assembly, thereby simplifying the control process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the cigarette lighter of the present invention in closed state;

[0018] Figure 2 This is a structural diagram of the range hood of the present invention in a startup state;

[0019] Figure 3This is a schematic structural diagram of the range hood of the present invention in the other direction of the startup state;

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

[0021] Figure 5 It is a cross-sectional schematic diagram of the range hood of the present invention in the startup state;

[0022] Figure 6 This is a schematic diagram of the internal structure of the telescopic inner cavity in the present utility model;

[0023] Figure 7 for Figure 6 Schematic diagram of the internal structure of the telescopic cavity in the other direction;

[0024] Figure 8 This is a schematic diagram of the internal structure of another embodiment of the telescopic inner cavity in the present utility model;

[0025] Figure 9 for Figure 8 Schematic diagram of the internal structure of the telescopic cavity in the other direction;

[0026] Figure 10 It is a projection diagram of the cigarette lighter of the present invention in the closed state;

[0027] Figure 11 It is a projection diagram of another embodiment of the range hood of the present invention in the startup state;

[0028] Figure 12 This is a structural diagram of the range hood of the present invention with the top plate and oil cup removed.

[0029] In the figure: a. smoke collecting chamber, b. telescopic inner chamber, 1. range hood body, 11. top plate, 111. air inlet, 112. oil dripping hole, 113. first avoidance groove, 114. second avoidance groove, 2. telescopic panel assembly, 3. movable baffle, 4. oil cup, 5. driving mechanism, 51. driving assembly, 511. driving motor, 512. driving gear, 513. driving rack, 514. first guide, 515. linkage driving member, 52. first linkage assembly, 521. transmission gear, 522. transmission rack, 523. second guide, 524. first linkage plate, 525. baffle bracket, 53. second linkage assembly, 531. first follower rack, 532. second follower rack, 533. follower gear, 534. third guide, 535. oil cup bracket.

[0030] 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

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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:

[0035] This utility model discloses a range hood. Figures 1 to 5 , comprising a range hood body 1, a telescopic panel assembly 2, a movable baffle 3, an oil cup 4, and a drive mechanism 5; the range hood body 1 comprises a top plate 11, a smoke collecting chamber a located above the top plate 11, and a telescopic inner chamber b; the top plate 11 is provided with an air intake 111 and an oil dripping hole 112, the air intake 111 and the oil dripping hole 112 being in communication with the smoke collecting chamber a; the telescopic panel assembly 2 is slidably connected to the telescopic inner chamber b; the movable baffle 3 is slidably connected to the top plate 11 for opening or closing the air intake 111; the oil cup 4 is slidably connected to the top plate 11, and the opening of its accommodating chamber is always aligned with the oil dripping hole 112;

[0036] The driving mechanism 5 is arranged on the range hood body 1. When the range hood is started, the driving mechanism 5 drives the telescopic panel assembly 2, the movable baffle 3 and the oil cup 4, so that the telescopic panel assembly 2 extends out of the telescopic inner cavity b, the movable baffle 3 and the oil cup 4 move away from each other and open the air intake 111; when the range hood is turned off, the driving mechanism 5 drives the telescopic panel assembly 2, the movable baffle 3 and the oil cup 4, so that the telescopic panel assembly 2 retracts into the telescopic inner cavity b, the movable baffle 3 and the oil cup 4 move closer to each other and close the air intake 111. When the movable baffle 3 closes the air intake 111, the downward projection of the rear edge of the movable baffle 3 falls into the opening of the accommodating cavity of the oil cup 4.

[0037] 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 assembly's smoke collection chamber a communicates with the air intake 111. A smoke exhaust fan is installed within the smoke collection chamber a. When the exhaust fan operates, it creates a negative pressure at the air intake 111. Cooking fumes are drawn into the smoke collection chamber a through the air intake 111 and ultimately exhausted by the exhaust fan.

[0038] The movable baffle 3 is movable relative to the top plate 11, that is, relative to the air intake port 111 on the top plate 11. The movable baffle 3 can slide to open or close the air intake port 111. When the range hood is started, the movable baffle 3 opens the air intake port 111 to allow the oil smoke to be normally drawn into the smoke collecting chamber a. As the oil smoke flows through the air intake port 111 into the smoke collecting chamber a, a mixture of oil and water in the oil smoke forms an oily liquid that adheres to the air intake port 111. When the range hood is in operation, the smoke exhaust fan creates a negative pressure in the smoke collecting chamber a, and the oily liquid adhering to the air intake port 111 does not drip downward. When the range hood is turned off, the exhaust fan stops running, and the movable baffle 3 closes the air inlet 111. The oil adhering to the air inlet 111 drips from the air inlet 111 after its gravity overcomes the adhesive force and is caught by the movable baffle 3, preventing the oil from dripping onto the stove or the user's cookware. This prevents the oil from dripping out of the air inlet 111 and onto the stovetop, thereby affecting the user experience. Furthermore, closing the air inlet 111 by the movable baffle 3 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. Closing the air inlet 111 by the movable baffle 3 when the range hood is turned off also improves the overall appearance of the range hood.

[0039] The oil cup 4 can be installed below the range hood body 1, that is, below the oil dripping hole 112. When the range hood is exhausting oil fumes, the oil and water mixture in the oil fumes will accumulate into oil in the air collecting chamber and on the volute of the exhaust fan. The oil will eventually flow to the oil cup 4 through the oil dripping hole 112 to collect the oil.

[0040] When the range hood is turned off, the movable baffle 3 moves backward to close the air intake 111, and the oil cup 4 moves forward so that the downward projection of the rear edge of the movable baffle 3 falls into the opening of its accommodating chamber. In this way, oil droplets dripping onto the movable baffle 3 can flow along the upper surface of the movable baffle 3 toward the rear edge of the movable baffle 3, and ultimately flow into the oil cup 4 from the rear edge of the movable baffle 3. When the range hood is turned on, the movable baffle 3 moves forward to open the air intake 111, and the oil cup 4 moves backward to avoid affecting the air intake of the air intake 111. It can be understood that regardless of whether the range hood is on or off, the accommodating chamber opening of the oil cup 4 is always aligned with the oil drip hole 112 and located directly below the oil drip hole 112. This ensures that oil accumulated in the range hood body 1 drips from the oil drip hole 112 into the oil cup 4, completing unified collection and facilitating subsequent cleaning.

[0041] The retractable panel assembly 2 has a mounting cavity for functional components. When the range hood is powered on, the functional components extend out of the retractable inner cavity b along with the retractable panel assembly 2. Once operational, these components assist the range hood in extracting fume, providing other functions such as lighting and creating an air curtain. When the range hood is powered off, the functional components cease operation and retract into the retractable inner cavity b along with the retractable panel assembly 2, minimizing the kitchen space occupied by the functional components when idle and providing a concealed and protected surface.

[0042] A lighting assembly and / or an air curtain assembly and / or an air quality detection module is provided in the installation cavity of the telescopic panel assembly 2, and a wind curtain air inlet corresponding to the wind curtain assembly and / or a detection hole corresponding to the air quality detection module is provided on the top plate 11 of the telescopic panel assembly 2. A wind curtain air outlet corresponding to the wind curtain assembly and / or a lighting window corresponding to the lighting assembly is provided on the bottom plate of the functional device of the telescopic panel assembly 2; when the functional device of the telescopic panel assembly 2 extends out of the telescopic inner cavity b, the lighting assembly and / or the air curtain assembly and / or the air quality detection module extend out of the telescopic inner cavity b along with the telescopic panel assembly 2.

[0043] like Figures 1 to 3As shown in the illustrated embodiment, the mounting cavity of the telescopic panel assembly 2 is equipped with a lighting assembly, an air curtain assembly, and an air quality detection module. The top plate 11 of the telescopic panel assembly 2 is provided with an air curtain inlet corresponding to the air curtain assembly and a detection hole corresponding to the air quality detection module. The bottom plate of the functional components of the telescopic panel assembly 2 is provided with air curtain outlets corresponding to the air curtain assembly and a lighting window corresponding to the lighting assembly. When the functional components of the telescopic panel assembly 2 extend out of the telescopic inner cavity b, the lighting assembly, air curtain assembly, and air quality detection module extend out of the telescopic inner cavity b along with the telescopic panel assembly 2. When the range hood is activated, the air curtain inlet and detection hole corresponding to the air curtain assembly on the top plate 11 of the telescopic panel assembly 2 move out of the telescopic inner cavity b, while the air curtain outlet and lighting window corresponding to the lighting assembly on the bottom plate of the telescopic panel assembly 2 move out of the telescopic inner cavity b. At this point, the lighting assembly in these functional components can be activated to achieve the lighting function.

[0044] When the range hood is started, if the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity b, the top plate 11 of the telescopic panel assembly 2 is provided with an air curtain air inlet hole corresponding to the air curtain assembly and a detection hole corresponding to the air quality detection module extending out of the telescopic inner cavity b, and the air curtain air outlet hole corresponding to the air curtain assembly and the lighting window corresponding to the lighting assembly on the bottom plate of the telescopic panel assembly 2 move out of the telescopic inner cavity b. At this time, the air intake 111 is opened. When the smoke exhaust fan is started, the air curtain assembly starts and forms an air curtain between the user and the stove to prevent oil smoke from escaping. The lighting assembly is illuminated to facilitate the user to see the status of the cooking ingredients. The air quality detection module detects the air quality in real time to determine the smoke purification effect of the range hood.

[0045] After the retractable panel assembly 2 is fully extended from the retractable inner cavity b, the air curtain assembly, lighting assembly, and air quality detection assembly are activated. The air curtain assembly draws air through the air curtain inlet and exhausts it downward through the air curtain outlet, forming a wind curtain. The air quality detection module draws air through the detection hole to detect the PM2.5 concentration in the air, providing feedback on the range hood's effectiveness in purifying cooking fumes. The lighting assembly transmits light downward through the lighting window, allowing the user to observe the ingredients being cooked. After the user completes cooking, the air curtain assembly closes, the air quality detection module turns off, the lighting assembly turns off, and the retractable panel assembly 2 retracts into the retractable inner cavity b.

[0046] Since the telescopic panel assembly 2, the movable baffle 3 and the oil cup 4 are driven by the same driving mechanism 5, it is only necessary to control the operation and stop of the driving mechanism 5 to simultaneously control the movement and stop of the telescopic panel assembly 2, the movable baffle 3 and the oil cup 4, thereby simplifying the control process.

[0047] In the smoke machine of the present invention, Figure 6As shown, the driving mechanism 5 includes a driving component 51, a first linkage component 52 and a second linkage component 53. The driving component 51 is arranged above the top plate 11 and is used to drive the telescopic panel component 2. The first linkage component 52 is linked with the driving component 51 to drive the movable baffle 3. The second linkage component 53 is linked with the first linkage component 52 to drive the oil cup 4.

[0048] When the range hood is turned on, the driving component 51 drives the telescopic panel component 2 to move forward to extend the telescopic inner cavity b. During this process, the driving component 51 also transmits power to the first linkage component 52, so that the first linkage component 52 drives the movable baffle 3 to move forward to open the air intake 111. During the transmission process, the first linkage component 52 also transmits power to the second linkage component 53, so that the second linkage component 53 drives the oil cup 4 to move backward.

[0049] When the range hood is turned off, the drive assembly 51 drives the telescopic panel assembly 2 to move backward to retract the telescopic inner cavity b. During this process, the drive assembly 51 also transmits power to the first linkage assembly 52, so that the first linkage assembly 52 drives the movable baffle 3 to move backward to close the air intake 111. During the transmission process, the first linkage assembly 52 also transmits power to the second linkage assembly 53, so that the second linkage assembly 53 drives the oil cup 4 to move forward.

[0050] In the smoke machine of the present invention, Figure 6 As shown, the driving assembly 51 includes a driving motor 511, a driving gear 512, a driving rack 513 and a first guide member 514. The driving motor 511 is arranged above the top plate 11, and its output end is connected to the driving gear 512. The first guide member 514 is slidingly connected to the telescopic inner cavity b. The driving rack 513 is connected to the first guide member 514 and meshes with the driving gear 512. The telescopic panel assembly 2 is connected to the driving rack 513.

[0051] The output end of the drive motor 511 drives the drive gear 512 in forward / reverse rotation. This meshing connection drives the drive rack 513 in linear motion, causing the drive rack 513 to move forward / backward, which in turn drives the telescopic panel assembly 2 forward / backward. A first guide groove is provided within the telescopic inner chamber b. A first guide member 514 can slide back and forth along the first guide groove to guide the movement of the drive rack 513, preventing the drive rack 513 from deviating from its trajectory and ensuring a stable trajectory for the telescopic panel assembly 2.

[0052] like Figures 7 to 9 As shown, in the illustrated embodiment, the driving component 51 and the first linkage component 52 synchronously drive the telescopic panel component 2 and the movable baffle 3 to move, and the moving speed of the telescopic panel component 2 is greater than the moving speed of the movable baffle 3.

[0053] After the range hood is turned on, the telescopic panel assembly 2 extends from the telescopic inner cavity b under the drive of the driving assembly 51. At this time, the first linkage assembly 52 synchronously drives the movable baffle 3 to move, and the movable baffle 3 moves with the telescopic panel assembly 2. When the movable baffle 3 moves with the telescopic panel assembly 2, since the moving speed of the telescopic panel assembly 2 is greater than the moving speed of the movable baffle 3, within the same movement duration, the displacement of the telescopic panel assembly 2 will be greater than the displacement of the movable baffle 3. When the telescopic panel assembly 2 extends out of the telescopic inner cavity b to a length of L2, the telescopic panel assembly 2 is completely extended out of the telescopic inner cavity b, and the movable baffle 3 opens the air intake port 111. At this time, the driving assembly 51 stops driving, and the telescopic panel assembly 2 and the movable baffle 3 stop moving at the same time. When the smoke exhaust fan is running, the oil smoke is sucked into the air intake port 111. Since the displacement of the telescopic panel assembly 2 is greater than the displacement of the movable baffle 3, the distance D1 between the front end of the telescopic panel assembly 2 and the top plate 11 is greater than the distance D2 between the front edge of the movable baffle 3 and the top plate 11. At this time, the functional components of the telescopic panel assembly 2 are located in front of the movable baffle 3, thereby preventing the movable baffle 3 from blocking the lower surface of the functional components of the telescopic panel assembly 2, so as to ensure the effective operation of the functional components of the telescopic panel assembly 2.

[0054] In this embodiment, if Figures 7 to 9 As shown, the first linkage assembly 52 includes a transmission gear 521, a transmission rack 522, a second guide member 523 and a first linkage plate 524. The transmission gear 521 is connected to the gear shaft of the driving gear 512, the second guide member 523 is slidably connected to the top plate 11, the first linkage plate 524 is connected to the second guide member 523, the transmission rack 522 is connected to the first linkage plate 524, the movable baffle 3 is connected to the first linkage plate 524, and when the transmission rack 522 is engaged with the transmission gear 521, the first linkage plate 524 drives the movable baffle 3 to move. The wheel diameter R of the driving gear 512 is larger than the wheel diameter r of the transmission gear 521, R:r=L1:L2, wherein L1 is the displacement of the telescopic panel assembly 2 when it extends / retracts the telescopic inner cavity b, and L2 is the displacement of the movable baffle 3 when it opens / closes the air intake 111.

[0055] When the driving motor 511 drives the driving gear 512 to rotate, the transmission gear 521 rotates synchronously, driving the transmission rack 522 and the first linkage plate 524 to move linearly at the same time, and driving the second guide member 523 to slide relative to the top plate 11. Under the connection between the movable baffle 3 and the first linkage plate 524, the movable baffle 3 moves synchronously relative to the telescopic panel assembly 2.

[0056] Since the wheel diameter R of the driving gear 512 is larger than the wheel diameter r of the transmission gear 521, and R:r=L1:L2, after the same movement duration, the displacement L1 of the telescopic panel assembly 2 will be greater than the displacement L2 of the movable baffle 3. At this time, the telescopic panel assembly 2 is fully extended from the telescopic inner chamber b, and the movable baffle 3 opens the air intake 111. At this time, when the smoke exhaust fan is running, the oil smoke is sucked into the air intake 111. Similarly, when the range hood is turned off, when the telescopic panel assembly 2 is fully retracted into the telescopic inner chamber b, the movable baffle 3 just completely closes the air intake 111.

[0057] When the range hood is turned on, since the movement speed of the telescopic panel assembly 2 is greater than the movement speed of the movable baffle 3, when the telescopic panel assembly 2 and the movable baffle 3 move into place, the distance D1 between the front end of the telescopic panel assembly 2 and the top plate 11 is greater than the distance D2 between the front edge of the movable baffle 3 and the top plate 11. At this time, the functional components of the telescopic panel assembly 2 are located in front of the movable baffle 3, thereby preventing the movable baffle 3 from blocking the lower surface of the functional components of the telescopic panel assembly 2, so as to ensure the effective operation of the functional components of the telescopic panel assembly 2.

[0058] In other embodiments, the driving assembly 51 and the first linkage assembly 52 do not synchronously drive the telescopic panel assembly 2 and the movable baffle 3 to move. Figures 10 to 12 As shown, in the illustrated embodiment, the driving component 51 drives the telescopic panel assembly 2 to extend out of the telescopic inner cavity b. After the driving component 51 drives the telescopic panel assembly 2 to move a displacement of L3, the first linkage component 52 drives the movable baffle 3 to move. When the telescopic panel assembly 2 is fully retracted into the telescopic inner cavity b, the movable baffle 3 moves a displacement of L2 and fully opens the air intake port 111. When the cigarette smoke machine is turned off, the driving component 51 and the first linkage component 52 synchronously drive the telescopic panel assembly 2 and the movable baffle 3 to move. After the telescopic panel assembly 2 and the movable baffle 3 move a displacement of L2, the movable baffle 3 completely closes the air intake port 111. The driving component 51 continues to drive the telescopic panel assembly 2 to move a displacement of L3, and makes the telescopic panel assembly 2 fully retract into the telescopic inner cavity b.

[0059] After the part of the telescopic panel assembly 2 provided with the functional device extends out of the telescopic inner cavity b, the length of the telescopic panel assembly 2 extending out of the telescopic inner cavity b is L3, and then the telescopic panel assembly 2 continues to extend from the telescopic inner cavity b. At this time, the movable baffle 3 moves with the telescopic panel assembly 2. When the movable baffle 3 moves with the telescopic panel assembly 2, the telescopic panel assembly 2 and the movable baffle 3 move synchronously, and the two remain in a relatively static state. When the telescopic panel assembly 2 extends out of the telescopic inner cavity b to a length of L2 again, the telescopic panel assembly 2 is completely extended out of the telescopic inner cavity b, and the movable baffle 3 opens the air intake port 111. At this time, when the smoke exhaust fan is running, the oil smoke is sucked into the air intake port 111. Similarly, when the cigarette smoke machine is turned off, the telescopic panel assembly 2 moves before the movable baffle 3. At this time, the telescopic panel assembly 2 and the movable baffle 3 maintain a relative running state, the movable baffle 3 remains stationary, and the air intake 111 is in an open state. When the telescopic panel assembly 2 retracts to the functional device on the lower surface of which the movable baffle 3 covers, the length of movement of the telescopic panel assembly 2 is L2. At this time, the air intake 111 is in an open state. Continue to move the telescopic panel assembly 2, and the movable baffle 3 begins to move with the telescopic panel assembly 2. The two maintain a relatively stationary state until the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity b, and the movable baffle 3 completely closes the air intake 111.

[0060] When the range hood is turned on, since the movable baffle 3 starts to move after the telescopic panel assembly 2 moves a displacement of L3, when the telescopic panel assembly 2 and the movable baffle 3 move into place, the distance D1 between the front end of the telescopic panel assembly 2 and the top plate 11 is greater than the distance D2 between the front edge of the movable baffle 3 and the top plate 11. At this time, the functional components of the telescopic panel assembly 2 are located in front of the movable baffle 3, thereby preventing the movable baffle 3 from blocking the lower surface of the functional components of the telescopic panel assembly 2, so as to ensure the effective operation of the functional components of the telescopic panel assembly 2.

[0061] In this embodiment, if Figures 10 to 12 As shown, the first linkage assembly 52 includes a transmission gear 521, a transmission rack 522, a second guide member 523 and a first linkage plate 524. The transmission gear 521 is connected to the gear shaft of the driving gear 512, the second guide member 523 is slidably connected to the top plate 11, the first linkage plate 524 is connected to the second guide member 523, the transmission rack 522 is connected to the first linkage plate 524, and the movable baffle 3 is connected to the first linkage plate 524. At the initial start-up of the range hood, the transmission rack 522 is not engaged with the transmission gear 521. After the telescopic panel assembly 2 moves a displacement of L3, the transmission rack 522 is engaged with the transmission gear 521, and the first linkage plate 524 drives the movable baffle 3 to move; at the initial shutdown of the range hood, the transmission rack 522 is engaged with the transmission gear 521. After the telescopic panel assembly 2 and the movable baffle 3 move a displacement of L2, the transmission rack 522 is disengaged from the transmission gear 521.

[0062] When the telescopic panel assembly 2 extends or retracts under the drive of the driving assembly 51, the driving motor 511 drives the driving gear 512 to rotate, so as to utilize the meshing connection relationship to drive the driving rack 513 to move. Under the connection of the first guide member 514, the driving rack 513 slides relative to the inner wall of the telescopic inner cavity b. Since the telescopic panel assembly 2 is connected to the driving rack 513, when the driving rack 513 moves, the telescopic panel assembly 2 moves synchronously, thereby realizing the extension or retraction of the telescopic panel assembly 2.

[0063] Under the drive of the driving component 51, after the part of the telescopic panel assembly 2 with the functional part extends out of the telescopic inner cavity b, the telescopic panel assembly 2 extends out of the telescopic inner cavity b to a length of L3, and then the telescopic panel assembly 2 continues to extend from the telescopic inner cavity b. At this time, the first linkage component 52 drives the movable baffle 3 to move. Specifically, the second guide member 523 moves forward until the transmission rack 522 is engaged with the transmission gear 521. At the same time, when the driving motor 511 drives the driving gear 512 to rotate, the transmission gear 521 rotates at the same time, thereby realizing the linkage between the first linkage component 52 and the driving component 51, realizing the synchronous movement of the telescopic panel assembly 2 and the movable baffle 3, and the two remain in a relatively static state; when the telescopic panel assembly 2 extends out of the telescopic inner cavity b to a length of L2 again, the driving component 51 stops driving, and the telescopic panel assembly 2 and the movable baffle 3 also stop moving. At this time, the telescopic panel assembly 2 is completely extended out of the telescopic inner cavity b, and the movable baffle 3 opens the air intake 111. At this time, when the smoke exhaust fan is running, the oil smoke is sucked into the air intake 111. Similarly, when the cigarette smoke machine is turned off, the driving motor 511 drives the driving gear 512 and the transmission gear 521 to rotate in the opposite direction at the same time, the second guide member 523 moves backward, and the movable baffle 3 and the telescopic panel assembly 2 retreat synchronously. After the movable baffle 3 moves a distance L2 with the telescopic panel assembly 2, the transmission rack 522 disengages from the transmission gear 521, and the movable baffle 3 stops moving. At this time, the air intake 111 is in a closed state, and the telescopic panel assembly 2 continues to move until the telescopic panel assembly 2 continues to move a distance L3 and is completely retracted into the telescopic inner cavity b.

[0064] There are also some embodiments of the range hood, such as Figures 10 to 12As shown, the first guide member 514 is provided with a linkage drive member 515. When the range hood is started, after the first guide member 514 moves a displacement of L3, the linkage drive member 515 begins to act on the second guide member 523 of the first linkage assembly 52, driving the second guide member 523 forward and causing the transmission rack 522 to engage with the transmission gear 521, thereby linking the first linkage assembly 52 with the drive assembly 51. After the telescopic panel assembly 2 extends a length L3 from the telescopic inner chamber b, the linkage drive member 515 activates the first linkage assembly 52. ​​Specifically, the linkage drive member 515 abuts against the end of the second guide member 523 and drives the second guide member 523 forward until the transmission rack 522 engages with the transmission gear 521. When the telescopic panel assembly 2 extends a further length L2 from the telescopic inner chamber b, the drive assembly 51 stops driving, and the telescopic panel assembly 2, the linkage drive member 515, and the movable baffle 3 also stop moving.

[0065] In this embodiment, if Figures 10 to 12 As shown, the second linkage assembly 53 includes a first follower rack 531, a second follower rack 532, a follower gear 533 and a third guide member 534. The first linkage assembly 52 has a first linkage plate 524, the first follower rack 531 is arranged on the first linkage plate 524, the third guide member 534 is slidably connected to the top plate 11, the second follower rack 532 is connected to the third guide member 534, the follower gear 533 is rotatably connected to the top plate 11 and is located between the first follower rack 531 and the second follower rack 532, the follower gear 533 is engaged with the first follower rack 531 and the second follower rack 532 at the same time, and the oil cup 4 is connected to the third guide member 534.

[0066] When the movable baffle 3 moves along with the movement of the telescopic panel assembly 2, the moving movable baffle 3 drives the first linkage plate 524 to move synchronously. Under the transmission of the first follower rack 531, the second follower rack 532 and the follower gear 533, the oil cup 4 connected to the third guide member 534 moves in the opposite direction relative to the movable baffle 3.

[0067] When the range hood is turned on, the movable baffle 3 moves forward to open the air intake 111. The moving baffle 3 drives the first linkage plate 524 to move synchronously. Under the transmission action of the second linkage component 53, the oil cup 4 moves backward. When the movable baffle 3 stops, the oil cup 4 stops synchronously. At this time, the air intake 111 is fully opened. When the smoke exhaust fan is running, the oil smoke is sucked into the air intake 111.

[0068] When the cigarette smoke machine is turned off, the movable baffle 3 moves backward to close the air intake port 111. The moving movable baffle 3 drives the first linkage plate 524 to move synchronously. Under the transmission action of the second linkage assembly 53, the oil cup 4 moves forward. When the movable baffle 3 stops, the oil cup 4 stops synchronously. At this time, the air intake port 111 is completely closed, and the downward projection of the rear edge of the movable baffle 3 falls into the opening of its accommodating cavity.

[0069] In this embodiment, if Figures 10 to 12 As shown, the movable baffle 3 is connected to the first linkage assembly 52 through the baffle bracket 525, and the oil cup 4 is connected to the second linkage assembly 53 through the oil cup hanger 535. The top plate 11 is provided with a first avoidance groove 113 for avoiding the baffle bracket 525 and a second avoidance groove 114 for avoiding the oil cup hanger 535. The baffle bracket 525 is slidably connected to the first avoidance groove 113, and the oil cup hanger 535 is slidably connected to the second avoidance groove 114.

[0070] The baffle bracket 525 is mounted on the underside of the first linkage plate 524. Its lower side passes through the first avoidance slot 113 and is fixedly connected to the movable baffle 3. Its upper side is fixedly connected to the first linkage plate 524. This allows the baffle bracket 525 to drive the first linkage plate 524 to move synchronously during the movement of the movable baffle 3. The oil cup hanger 535 has its upper end fixedly connected to one end of the third guide member 534 via bolts (not shown). Its lower end passes through the second avoidance slot 114 and is fixedly connected to the oil cup 4. This allows the oil cup hanger 535 to drive the oil cup 4 to move synchronously in the opposite direction during the movement of the movable baffle 3.

[0071] 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), a smoke collecting chamber (a) located above the top plate (11), and a telescopic inner chamber (b); an air suction port (111) and an oil dripping hole (112) are provided on the top plate (11); the air suction port (111) and the oil dripping hole (112) are in communication with the smoke collecting chamber (a); a telescopic panel assembly (2) slidably connected to the telescopic inner cavity (b); A movable baffle (3) slidably connected to the top plate (11) and used for opening or closing the air suction port (111); An oil cup (4) is slidably connected to the top plate (11), and the opening of its accommodating cavity is always aligned with the oil dripping hole (112); The driving mechanism (5) is provided on the range hood body (1). When the range hood is started, the driving mechanism (5) drives the telescopic panel assembly (2), the movable baffle (3) and the oil cup (4), so that the telescopic panel assembly (2) extends out of the telescopic inner cavity (b), the movable baffle (3) and the oil cup (4) move away from each other and open the air inlet (111); when the range hood is shut down, the driving mechanism (5) drives the telescopic panel assembly (2), the movable baffle (3) and the oil cup (4), so that the telescopic panel assembly (2) retracts into the telescopic inner cavity (b), the movable baffle (3) and the oil cup (4) move closer to each other and close the air inlet (111). When the movable baffle (3) closes the air inlet (111), the downward projection of the rear edge of the movable baffle (3) falls into the opening of the accommodating cavity of the oil cup (4).

2. The range hood according to claim 1, characterized in that: The driving mechanism (5) comprises a driving assembly (51), a first linkage assembly (52), and a second linkage assembly (53); the driving assembly (51) is arranged above the top plate (11) and is used to drive the telescopic panel assembly (2); the first linkage assembly (52) is linked to the driving assembly (51) and is used to drive the movable baffle (3); and the second linkage assembly (53) is linked to the first linkage assembly (52) and is used to drive the oil cup (4).

3. The range hood according to claim 2, characterized in that: The driving assembly (51) includes a driving motor (511), a driving gear (512), a driving rack (513) and a first guide member (514). The driving motor (511) is arranged above the top plate (11), and its output end is connected to the driving gear (512). The first guide member (514) is slidably connected to the telescopic inner cavity (b). The driving rack (513) is connected to the first guide member (514) and meshes with the driving gear (512). The telescopic panel assembly (2) is connected to the driving rack (513).

4. The range hood according to claim 3, characterized in that: The driving component (51) and the first linkage component (52) synchronously drive the telescopic panel component (2) and the movable baffle (3) to move, and the moving speed of the telescopic panel component (2) is greater than the moving speed of the movable baffle (3).

5. The range hood according to claim 4, characterized in that: The first linkage assembly (52) includes a transmission gear (521), a transmission rack (522), a second guide member (523) and a first linkage plate (524), wherein the transmission gear (521) is connected to the gear shaft of the driving gear (512), the second guide member (523) is slidably connected to the top plate (11), the first linkage plate (524) is connected to the second guide member (523), the transmission rack (522) is connected to the first linkage plate (524), and the movable baffle (3) is connected to the first linkage plate (524). A linkage plate (524) is connected, and when the transmission rack (522) is engaged with the transmission gear (521), the first linkage plate (524) drives the movable baffle (3) to move, and the wheel diameter R of the driving gear (512) is larger than the wheel diameter r of the transmission gear (521), and R:r=L1:L2, wherein L1 is the displacement of the telescopic panel assembly (2) when it extends / retracts the telescopic inner cavity (b), and L2 is the displacement of the movable baffle (3) when it opens / closes the air inlet (111).

6. The range hood according to claim 3, characterized in that: When the range hood is started, the driving component (51) drives the telescopic panel component (2) to extend out of the telescopic inner cavity (b). After the driving component (51) drives the telescopic panel component (2) to move a displacement of L3, the first linkage component (52) drives the movable baffle (3) to move. When the telescopic panel component (2) is completely retracted into the telescopic inner cavity (b), the movable baffle (3) moves a displacement of L2 and fully opens the air inlet (111). When the range hood is turned off, the driving component (51) and the first linkage component (52) synchronously drive the telescopic panel component (2) and the movable baffle (3) to move. After the telescopic panel component (2) and the movable baffle (3) move a displacement of L2, the movable baffle (3) completely closes the air inlet (111). The driving component (51) continues to drive the telescopic panel component (2) to move a displacement of L3 and causes the telescopic panel component (2) to completely retract into the telescopic inner cavity (b).

7. The range hood according to claim 6, characterized in that: The first linkage assembly (52) comprises a transmission gear (521), a transmission rack (522), a second guide member (523) and a first linkage plate (524); the transmission gear (521) is connected to the gear shaft of the driving gear (512); the second guide member (523) is slidably connected to the top plate (11); the first linkage plate (524) is connected to the second guide member (523); the transmission rack (522) is connected to the first linkage plate (524); the movable baffle (3) is connected to the first linkage plate (524); and when the range hood is started, the movable baffle (3) is connected to the first linkage plate (524). At the beginning of the movement, the transmission rack (522) is not engaged with the transmission gear (521); after the telescopic panel assembly (2) moves a displacement of L3, the transmission rack (522) is engaged with the transmission gear (521), and the first linkage plate (524) drives the movable baffle (3) to move; at the beginning of the hood hood closing, the transmission rack (522) is engaged with the transmission gear (521); after the telescopic panel assembly (2) and the movable baffle (3) move a displacement of L2, the transmission rack (522) is disengaged from the transmission gear (521).

8. The range hood according to claim 7, characterized in that: A linkage drive member (515) is provided on the first guide member (514). When the range hood is started, after the first guide member (514) moves a displacement L3, the linkage drive member (515) begins to act on the second guide member (523) of the first linkage assembly (52), and drives the second guide member (523) to move forward, and causes the transmission rack (522) to engage with the transmission gear (521), so that the first linkage assembly (52) and the drive assembly (51) are linked.

9. The range hood according to claim 2, characterized in that: The second linkage assembly (53) includes a first follower rack (531), a second follower rack (532), a follower gear (533) and a third guide member (534). The first linkage assembly (52) has a first linkage plate (524). The first follower rack (531) is provided on the first linkage plate (524). The third guide member (534) is slidably connected to the top plate (11). The second follower rack (532) is connected to the third guide member (534). The follower gear (533) is rotationally connected to the top plate (11) and is located between the first follower rack (531) and the second follower rack (532). The follower gear (533) is simultaneously engaged with the first follower rack (531) and the second follower rack (532). The oil cup (4) is connected to the third guide member (534).

10. The range hood according to claim 2, characterized in that: The movable baffle (3) is connected to the first linkage assembly (52) via a baffle bracket (525), and the oil cup (4) is connected to the second linkage assembly (53) via an oil cup hanger (535). The top plate (11) is provided with a first avoidance groove (113) for avoiding the baffle bracket (525) and a second avoidance groove (114) for avoiding the oil cup hanger (535). The baffle bracket (525) is slidably connected to the first avoidance groove (113), and the oil cup hanger (535) is slidably connected to the second avoidance groove (114).

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