Range hood

Abstract

The utility model discloses a range hood which comprises a range hood body, a telescopic panel assembly, an oil cup, a driving assembly and a reversing assembly. When the range hood is started, the exhaust inlet is opened through the oil cup, so that oil smoke can be normally sucked into the air collection cavity; when the range hood is shut down, the exhaust inlet is shielded by the oil cup, so that after the range hood is shut down, even if oil adhering to the exhaust inlet drips from the exhaust inlet, the oil can be received by the oil cup, the oil at the exhaust inlet is prevented from dripping into a cooking bench or a cooker of a user, the oil is prevented from influencing the cooking environment, the use effect of the range hood is improved, and the user experience is improved. Besides, no matter the oil cup is located at the position where the air suction opening is opened or the position where the air suction opening is shielded, the oil liquid dripping from the oil dripping hole can be effectively received, so that stable collection of the oil liquid is achieved, and the original oil collection function of the oil cup is guaranteed.

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] To reduce the space occupied in the kitchen, existing range hoods are equipped with a retractable panel assembly for functional modules such as lighting and air curtain fans. The range hood body is provided with a retractable inner cavity for accommodating the panel assembly. When the range hood is in use, a driving mechanism drives the panel assembly to extend out of the retractable inner cavity, allowing functional components such as the lighting and air curtain fans to extend out of the retractable inner cavity and be used normally. When the range hood is turned off, the driving mechanism drives the panel assembly to retract into the retractable inner cavity, thereby reducing the space occupied by the panel assembly when the range hood is idle. In addition, the air intake of the top-suction range hood is provided on the top plate of the range hood body. When the range hood is in operation, oil smoke enters the smoke collecting chamber of the range hood through the air intake. The oil and water mixture in the oil smoke forms an oily liquid at the edge of the air intake. Due to the airflow in the prevailing air collecting box during operation, the oily liquid at the air intake will not drip downwards. However, when the range hood is turned off, when the oily liquid at the air intake accumulates to a certain amount, it will drip from the air intake, affecting the user experience. 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, an oil cup, a drive assembly, and a reversing assembly; the range hood body comprises a top plate, a telescopic inner cavity located above the top plate, and a smoke collecting cavity; the top plate is provided with an air inlet and an oil dripping hole, the air inlet and the oil dripping hole being in communication with the smoke collecting cavity; the telescopic panel assembly is slidably connected to the telescopic inner cavity; the oil cup is slidably connected to the top plate, with the opening of its accommodating cavity always aligned with the oil dripping hole; the drive assembly is used to drive the telescopic panel assembly; the reversing assembly is linked to the drive assembly, and is used to drive the oil cup, and the moving direction of the oil cup is opposite to the moving direction of the telescopic panel assembly;

[0005] Among them, when the range hood is started, the driving assembly drives the telescopic panel assembly to extend forward from the telescopic inner cavity, and the reversing assembly drives the oil cup to retreat along the top plate, and the air suction port and the opening of the oil cup's accommodating cavity are staggered; when the range hood is turned off, the driving assembly drives the telescopic panel assembly to retract backward into the telescopic inner cavity, and the reversing assembly drives the oil cup to move forward along the top plate, and the opening of the oil cup's accommodating cavity covers the air suction port.

[0006] According to one embodiment of the present utility model, the reversing assembly includes a first rack, a second rack and a reversing gear. The first rack is linked to the driving assembly, the second rack is slidably connected to the top plate, the reversing gear is rotatably connected to the top plate, the reversing gear is arranged between the first rack and the second rack, and is engaged with the first rack and the second rack at the same time, and the oil cup is connected to the second rack.

[0007] According to one embodiment of the present invention, the reversing assembly further includes a first sliding member and a second sliding member, the first sliding member and the second sliding member are slidably connected to the top plate, the first rack is connected to the first sliding member, and the second rack is connected to the second sliding member.

[0008] According to one embodiment of the present invention, the driving component has a first output end and a second output end. The driving directions output by the first output end and the second output end are the same. The first output end is connected to the telescopic panel component, and the second output end is used to drive the reversing component.

[0009] According to one embodiment of the present invention, the driving assembly includes a driving motor, a driving gear, a driving rack, a first guide and a transmission gear. The driving motor is arranged above the top plate, and its output end is connected to the driving gear and the transmission gear. The driving gear forms the first output end of the driving assembly, and the transmission gear forms the second output end of the driving assembly. The first guide is slidably connected to the telescopic inner cavity, the driving rack is connected to the first guide and meshes with the driving gear, the telescopic panel assembly is connected to the driving rack, and the transmission gear meshes with the first rack.

[0010] According to one embodiment of the present invention, the moving distance of the telescopic panel group when extending or retracting the telescopic inner cavity is L1, the moving distance when the oil cup blocks the air intake port or is offset from the air intake port is L2, and the wheel diameter R of the driving gear and the wheel diameter r of the transmission gear satisfy: R: r = L1: L2.

[0011] According to one embodiment of the present invention, gear teeth are provided on both sides of the first rack, the gear teeth on the side away from the second rack are engaged with the transmission gear, and the gear teeth on the side close to the second rack are engaged with the reversing gear.

[0012] According to one embodiment of the present invention, the oil cup is connected to the reversing assembly through an oil cup hanger, and a avoidance groove for avoiding the oil cup hanger is provided on the top plate, and the oil cup hanger is slidably connected to the avoidance groove.

[0013] According to one embodiment of the present invention, 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, a wind curtain air inlet hole corresponding to the wind curtain assembly and / or a detection hole corresponding to the air quality detection module is provided on the top plate of the telescopic panel assembly, and a wind curtain air outlet hole corresponding to the wind curtain assembly and / or a lighting window corresponding to the lighting assembly is provided on the bottom plate of the telescopic panel assembly; when the telescopic panel assembly is fully extended out of the telescopic inner cavity, the wind curtain air inlet hole and / or the detection hole on the top plate of the telescopic panel assembly moves out of the telescopic inner cavity, and the wind curtain air outlet hole and / or the lighting window on the bottom plate of the telescopic panel assembly moves out of the telescopic inner cavity.

[0014] According to one embodiment of the present invention, the cross-section of the oil cup gradually decreases from top to bottom, and the front side wall of the oil cup is tilted backward from top to bottom.

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

[0016] The range hood of the present invention opens the air intake port via the oil cup when the hood is started, allowing oil smoke to be normally drawn into the air collection chamber. When the hood is shut down, the oil cup blocks the air intake port. Thus, even if oil adhered to the air intake port drips from the air intake port after the hood is shut down, the oil cup catches it, preventing it from dripping onto the stovetop or the user's cookware, thereby improving the user experience. Furthermore, the oil cup shielding the air intake port when the hood is shut down prevents foreign matter such as insects from entering the hood and affecting the stability of its internal functional components. Furthermore, the top plate of the hood has a complete exterior surface, enhancing its aesthetics. Furthermore, regardless of whether the oil cup is in the open or blocked position, it effectively catches oil dripping from the oil dripping hole, thereby achieving stable collection of the oil and ensuring the original oil collection function of the oil cup. 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 schematic structural diagram of the range hood of the present invention in a startup state;

[0019] Figure 3 This 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 cross-sectional schematic diagram of the range hood of the present invention in the startup state;

[0021] Figure 5 This is a schematic diagram of the internal structure of the telescopic inner cavity in the present utility model;

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

[0023] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0024] In the figure: a. telescopic inner cavity, b. smoke collection cavity, 1. range hood body, 11. top plate, 111. air intake, 112. oil drip hole, 113. avoidance groove, 2. telescopic panel assembly, 22. air inlet hole of air curtain, 23. detection hole, 24. air outlet hole of air curtain, 25. lighting window, 3. oil cup, 4. drive assembly, 41. drive motor, 42. drive gear, 43. drive rack, 44. first guide member, 45. transmission gear, 5. reversing assembly, 51. first rack, 52. second rack, 53. reversing gear, 54. first sliding member, 55. second sliding member, 56. oil cup bracket.

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

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

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

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

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

[0030] This utility model discloses a range hood. Figures 1 to 4, including a range hood body 1, a telescopic panel assembly 2, an oil cup 3, a drive assembly 4 and a reversing assembly 5; the range hood body 1 has a top plate 11, a telescopic inner cavity a located above the top plate 11 and a smoke collecting cavity b, an air inlet 111 and an oil dripping hole 112 are provided on the top plate 11, and the air inlet 111 and the oil dripping hole 112 are connected to the smoke collecting cavity b; the telescopic panel assembly 2 is slidably connected to the telescopic inner cavity a; the oil cup 3 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 drive assembly 4 is used to drive the telescopic panel assembly 2; the reversing assembly 5 and the drive The driving component 4 is linked to drive the oil cup 3, and makes the moving direction of the oil cup 3 opposite to the moving direction of the telescopic panel component 2; wherein, when the range hood is started, the driving component 4 drives the telescopic panel component 2 to extend forward from the telescopic inner cavity a, and the reversing component 5 drives the oil cup 3 to retreat along the top plate 11, and makes the air suction port 111 and the opening of the accommodating cavity of the oil cup 3 staggered; when the range hood is turned off, the driving component 4 drives the telescopic panel component 2 to retract backward into the telescopic inner cavity a, and the reversing component 5 drives the oil cup 3 to advance along the top plate 11, and makes the opening of the accommodating cavity of the oil cup 3 cover the air suction port 111.

[0031] In this embodiment, the air intake 111 is located at the rear end of the top plate 11, relatively close to the wall, and vertically obliquely above the gas outlet of the stove. A smoke exhaust fan is installed in the smoke collecting chamber b. When the smoke exhaust fan is in operation, the air intake 111 generates negative pressure. The oil smoke generated by the user's cooking is sucked into the smoke collecting chamber b through the air intake 111 and finally exhausted by the smoke exhaust fan. The oil cup 3 can be installed below the range hood body 1, that is, below the oil drip hole 112. During the process of exhausting oil smoke from the range hood, the oil and water mixture in the oil smoke forms oil liquid that accumulates in the smoke collecting chamber b and on the volute of the smoke exhaust fan. The oil liquid eventually flows to the oil cup 3 through the oil drip hole 112 to achieve oil collection. The oil cup 3 is movable relative to the top plate 11, that is, it is movable relative to the air intake 111 on the top plate 11. The oil cup 3 can open or cover the air intake 111 by sliding.

[0032] When the range hood of the present invention is turned on, the telescopic panel assembly 2 moves forward and extends out of the telescopic inner cavity a. The air curtain, lighting device and other functional components on the telescopic panel assembly 2 extend out of the telescopic inner cavity a and can be used normally. The oil cup 3 moves backward and opens the air suction port 111. Then the smoke exhaust fan starts to operate. The external oil smoke enters the smoke collecting chamber b of the range hood through the air suction port 111 and is discharged from the smoke collecting chamber b by the smoke exhaust fan. In the process of the oil smoke flowing through the smoke collecting chamber b, the oil liquid formed by the mixture of oil and water in the oil smoke will be discharged at the air suction port 111. , the inner wall of the smoke collecting chamber b and the volute of the smoke exhaust fan. The oil on the inner wall of the smoke collecting chamber b and the oil on the volute will gather at the bottom of the smoke collecting chamber b, and drip onto the oil cup 3 through the oil dripping hole 112 connected to the smoke collecting chamber b and be collected by the oil cup 3. After the smoke exhaust fan is turned off, the telescopic panel assembly 2 retracts the telescopic inner cavity a, and the oil cup 3 moves forward and closes the air intake port 111. There is no negative pressure at the air intake port 111. The weight of the oil at the air intake port 111 overcomes its adhesion to the air intake port 111 and will drip downward and be caught by the oil cup 4.

[0033] When the range hood of the present invention is started, as shown in Figure 2, the oil cup 3 opens the air intake 111, allowing the oil smoke to be normally drawn into the smoke collecting chamber b. As the oil smoke flows through the air intake 111 into the smoke collecting chamber b, the oil and water mixture in the oil smoke forms an oily liquid that adheres to the air intake 111. When the range hood is in operation, the smoke exhaust fan creates a negative pressure in the smoke collecting chamber b, preventing the oil adhering to the air intake 111 from dripping downward. At this time, the downward projection of the oil drip hole 112 falls into the opening of the accommodating chamber of the oil cup 3, allowing the oil accumulated in the smoke collecting chamber b and on the volute of the smoke exhaust fan to flow normally into the oil cup 3.

[0034] The range hood of the utility model is turned off. Figure 1 As shown, when the smoke exhaust fan stops operating and the oil cup 3 blocks the air intake 111, the oil adhering to the air intake 111 drips from the air intake 111 after its gravity overcomes the adhesive force and is caught by the oil cup 3. This prevents the oil from dripping onto the stovetop or the user's cookware, and prevents the oil from dripping out of the air intake 111 and onto the stovetop, thereby affecting the user experience. Furthermore, when the range hood is turned off, the oil cup 3 blocks the air intake 111, preventing foreign matter such as insects from entering the range hood and affecting the stability of its internal components. Furthermore, while the oil cup 3 blocks the air intake 111, it also ensures that the downward projection of the oil drip hole 112 falls into the opening of the oil cup 3's accommodating chamber, ensuring that oil accumulated in the smoke collection chamber b and on the volute of the smoke exhaust fan can still flow into the oil cup 3 normally.

[0035] In the range hood of this invention, the retractable panel assembly 2 has a mounting cavity, in which functional components are installed. When the range hood is powered on, the functional components extend out of the retractable cavity a 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 cavity a 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.

[0036] Specifically, such as Figures 1 to 3 As shown, a lighting assembly, an air curtain assembly and an air quality detection module are provided in the installation cavity of the telescopic panel assembly 2, a wind curtain air inlet 22 corresponding to the wind curtain assembly and a detection hole 23 corresponding to the air quality detection module are provided on the top plate 11 of the telescopic panel assembly 2, and a wind curtain air outlet 24 corresponding to the wind curtain assembly and a lighting window 25 corresponding to the lighting assembly are provided on the bottom plate of the telescopic panel assembly 2; when the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity a, the wind curtain air inlet 22 and the detection hole 23 on the top plate 11 of the telescopic panel assembly 2 move out of the telescopic inner cavity a, and the wind curtain air outlet 24 and the lighting window 25 on the bottom plate of the telescopic panel assembly 2 move out of the telescopic inner cavity a.

[0037] When the range hood is activated, the lighting assembly, air curtain assembly, and air quality detection module operate according to settings or user selections. The functional components enable the air curtain and lighting modules to function. When the air curtain assembly is activated, air above the retractable panel assembly 2 enters through the air curtain inlet 22 and is discharged by the air curtain assembly through the air curtain outlet 24. This forms an air curtain beneath the base of the retractable panel assembly 2, positioned between the user and the stove, blocking cooking fumes and preventing them from escaping. When the lighting assembly is in operation, light emitted by the lighting assembly shines downward through the lighting window 25, providing a brightly lit environment for the user. When the air quality detection module is activated, air above the retractable panel assembly 2 enters the air quality detection module through the detection hole 23 and is detected by the air quality detection module. The air quality detected by the air quality detection module represents the air quality in the kitchen. When the range hood is in operation, the air quality detection module is activated to monitor the range hood's extraction efficiency. When the range hood is off, the air quality detection module is activated to perform a patrol function, detecting whether there is any cooking fume backflow in the kitchen.

[0038] The drive assembly 4 is used to drive the telescopic panel assembly 2. The reversing assembly 5 is linked to the drive assembly 4 to drive the oil cup 3 to move in the opposite direction of the telescopic panel assembly 2. The air intake 111 is located in front of the oil drip hole 112. When the range hood is turned on, the drive assembly 4 drives the telescopic panel assembly 2 forward to extend out of the telescopic inner cavity a. During this process, the drive assembly 4 also transmits power to the reversing assembly 5, causing the reversing assembly 5 to drive the oil cup 3 backward to open the air intake 111. At this time, the air intake 111 is located in front of the oil cup 3. When the exhaust fan of the range hood is running, the oil fumes produced by the user's cooking flow out of the air intake 111. Since the oil cup 3 is located behind the air intake 111, the oil cup 3 will not hinder the flow of oil fumes out of the air intake 111.

[0039] When the hood is turned off, the drive assembly 4 drives the telescopic panel assembly 2 backward to retract the telescopic inner chamber a. During this process, the drive assembly 4 also transmits power to the reversing assembly 5, causing the reversing assembly 5 to drive the oil cup 3 forward to block the air intake 111. The width of the opening of the oil cup 3's accommodating chamber in the front-to-back direction is greater than or equal to the sum of the width of the oil drip hole 112 in the front-to-back direction, the width of the air intake 111 in the front-to-back direction, and the distance between the oil drip hole 112 and the air intake 111. In this way, when the oil cup 3 blocks the air intake 111, the downward projections of the oil drip hole 112 and the air intake 111 both fall into the opening of the oil cup 3's accommodating chamber, allowing the oil cup 3 to simultaneously receive oil dripping from both the oil drip hole 112 and the air intake 111 when the hood is turned off.

[0040] Since the telescopic panel assembly 2 and the oil cup 3 are driven by the same drive assembly 4, it is only necessary to control the operation and stop of the drive assembly 4 to simultaneously control the movement and stop of the telescopic panel assembly 2 and the oil cup 3, thereby simplifying the control process; and by linking the telescopic panel assembly 2 and the oil cup 3, a set of power devices can be eliminated to reduce the production cost of the range hood.

[0041] In the smoke machine of the present invention, Figure 5 As shown, the reversing assembly 5 includes a first rack 51, a second rack 52 and a reversing gear 53. The first rack 51 is linked to the driving assembly 4, the second rack 52 is slidably connected to the top plate 11, and the reversing gear 53 is rotatably connected to the top plate 11. The reversing gear 53 is arranged between the first rack 51 and the second rack 52, and is engaged with the first rack 51 and the second rack 52 at the same time. The oil cup 3 is connected to the second rack 52.

[0042] When the drive assembly 4 outputs power, it drives the first rack 51 to move. The first rack 51 then drives the reversing gear 53 to rotate. The reversing gear 53 then drives the second rack 52 to move linearly, causing the oil cup 3 to move along with the second rack 52. The transmission characteristics of the reversing gear 53 indicate that when the reversing gear 53 rotates, the first rack 51 and second rack 52 on either side of it move in opposite directions. Therefore, the movement of the oil cup 3 is also opposite to that of the telescopic panel assembly 2.

[0043] In the smoke machine of the present invention, Figure 5 As shown, the reversing assembly 5 further includes a first sliding member 54 and a second sliding member 55, which are slidably connected to the top plate 11. The first rack 51 is connected to the first sliding member 54, and the second rack 52 is connected to the second sliding member 55. The top plate 11 is provided with a first chute and a second chute extending in the front-to-back direction. The first sliding member 54 slidably engages with the first chute, and the second sliding member 55 slidably engages with the second chute, thereby supporting the movement of the first sliding member 54 and the second sliding member 55, thereby effectively supporting the movement of the telescopic panel assembly 2 and the oil cup 3.

[0044] In the smoke machine of the present invention, Figure 6 and Figure 7 As shown, the drive assembly 4 has a first output end and a second output end. The first output end and the second output end output the same driving direction. The first output end is connected to the telescopic panel assembly 2, and the second output end is used to drive the reversing assembly 5. The first and second output ends output power through the same drive assembly 4, so that the telescopic panel assembly 2 and the oil cup 3 can be driven by the same drive assembly 4, achieving simultaneous start and stop movement. This simplifies the drive method for the telescopic panel assembly 2 and the oil cup 3, making the internal structure of the range hood body 1 simpler and more compact.

[0045] In the smoke machine of the present invention, Figure 6 and Figure 7 As shown, the drive assembly 4 includes a drive motor 41, a drive gear 42, a drive rack 43, a first guide member 44 and a transmission gear 45. The drive motor 41 is arranged above the top plate 11, and its output end is connected to the drive gear 42 and the transmission gear 45. The drive gear 42 forms the first output end of the drive assembly 4, and the transmission gear 45 forms the second output end of the drive assembly 4. The first guide member 44 is slidably connected to the telescopic inner cavity a, the drive rack 43 is connected to the first guide member 44 and meshes with the drive gear 42, the telescopic panel assembly 2 is connected to the drive rack 43, and the transmission gear 45 meshes with the first rack 51.

[0046] The drive gear 42 and transmission gear 45 rotate with the output shaft of the drive motor 41. The drive gear 42 meshes with the drive rack 43, converting the rotation of the output shaft of the drive motor 41 into linear motion of the drive rack 43, thereby driving the telescopic panel assembly 2 in linear motion. The transmission gear 45 meshes with the first rack 51, converting the rotation of the output shaft of the drive motor 41 into linear motion of the first rack 51. The first rack 51 drives the second rack 52 in reverse motion via the reversing gear 53, which then drives the oil cup 3 in motion. During this process, the drive rack 43, the telescopic panel assembly 2, and the first rack 51 move in the same direction. The second rack 52 and the oil cup 3 move in the opposite direction to the direction of the drive rack 43.

[0047] When the range hood is turned on, the drive assembly 4 starts, and the drive motor 41 rotates the drive gear 42, which, through a meshing connection, drives the drive rack 43 to move. Since the telescopic panel assembly 2 and the first guide member 44 are both connected to the drive rack 43, when the drive rack 43 is driven and moved by the drive gear 42, the drive rack 43 simultaneously drives the telescopic panel assembly 2 and the first guide member 44 connected thereto to move. The first guide member 44 slides within the telescopic inner chamber a to guide the telescopic panel assembly 2, and the telescopic panel assembly 2 extends from the telescopic inner chamber a. Simultaneously, the drive motor 41 rotates the transmission gear 45, which, through a meshing connection, drives the first rack 51 to move. The first rack 51 drives the second rack 52 in the opposite direction via the reversing gear 53, which then drives the oil cup 3 backward. When the drive assembly 4 stops, the telescopic panel assembly 2 and the oil cup 3 stop, and the telescopic panel assembly 2 is fully extended from the telescopic inner chamber 2, and the oil cup 3 fully opens the air intake 111.

[0048] When the cigarette lighter is turned off and the drive assembly 4 is activated, the drive motor 41 drives the drive gear 42 in the reverse direction, leveraging the meshing connection to drive the drive rack 43 in the reverse direction. Since both the telescopic panel assembly 2 and the first guide member 44 are connected to the drive rack 43, when the drive rack 43 is driven and moved by the drive gear 42, the drive rack 43 simultaneously drives the telescopic panel assembly 2 and the first guide member 44 connected thereto in the reverse direction. The first guide member 44 slides within the telescopic cavity a to guide the telescopic panel assembly 2, causing the telescopic panel assembly 2 to retract into the telescopic cavity a. Simultaneously, the drive motor 41 drives the transmission gear 45 in the reverse direction, leveraging the meshing connection to drive the first rack 51 in the reverse direction. The first rack 51 drives the second rack 52 forward via the reversing gear 53, which in turn drives the oil cup 3 forward. When the drive assembly 4 stops, the telescopic panel assembly 2 and the oil cup 3 stop, and the telescopic panel assembly 2 is fully retracted into the telescopic cavity 2, with the oil cup 3 blocking the open air intake 111.

[0049] In the smoke machine of the present invention, Figure 6 and Figure 7 As shown, the moving distance of the telescopic panel group when extending or retracting the telescopic inner cavity a is L1, the moving distance when the oil cup 3 blocks the air intake port 111 or is offset from the air intake port 111 is L2, and the wheel diameter R of the driving gear 42 and the wheel diameter r of the transmission gear 45 satisfy: R:r=L1:L2.

[0050] The wheel diameter of the driving gear 42 is larger than the wheel diameter of the transmission gear 45. Therefore, at the same rotational speed, the linear velocity of the driving gear 42 is greater than the linear velocity of the transmission gear 45, so that the movement speed of the driving rack 43 engaged with the driving gear 42 will also be greater than the movement speed of the first rack 51 engaged with the transmission gear 45, and the movement speed of the first rack 51 is equal to the movement speed of the second rack 52. Therefore, the movement speed of the telescopic panel assembly 2 is greater than the movement speed of the oil cup 3.

[0051] The displacement L1 when the telescopic panel assembly 2 is fully extended or retracted into the telescopic inner cavity a is the displacement of the drive rack 43 each time it moves forward or backward. The displacement L2 when the oil cup 3 blocks the air inlet 111 or is offset from the air inlet 111 is the displacement of the first rack 51 each time it moves forward or backward. Under the same movement time, L1 = V1*t, L2 = V2*t, so L1:L2 = V1:V2, V1 is the movement speed of the drive rack 43, and V2 is the movement speed of the first rack 51. The linear motion speed of the drive rack 43 is equal to the linear velocity of the drive gear 42, and the linear motion speed of the first rack 51 is equal to the linear velocity of the transmission gear 45. The linear velocity of the drive gear 42 is V1 = R*w1, and the linear velocity of the transmission gear 45 is V2 = r*w2. w1 is the angular velocity of the drive gear 42, and w2 is the angular velocity of the transmission gear 45. Therefore, L1:L2=R*w1:r*w2. Since the driving gear 42 and the transmission gear 45 rotate coaxially, w1 and w2 are equal, that is, L1:L2=R:r.

[0052] In the smoke machine of the present invention, Figure 6 and Figure 7As shown, gear teeth are provided on both sides of the first rack 51. The gear teeth on the side away from the second rack 52 mesh with the transmission gear 45, and the gear teeth on the side close to the second rack 52 mesh with the reversing gear 53. The first rack 51 is located between the transmission gear 45 and the reversing gear 53. The rotation of the transmission gear 45 can drive the reversing gear 53 to rotate through the first rack 51, and the reversing gear 53 then drives the second rack 52 to perform linear motion. According to the transmission characteristics of the rack, the direction of rotation of the transmission gear 45 is opposite to that of the reversing gear 53, while the direction of rotation of the transmission gear 45 is the same as that of the driving gear 42. Therefore, the movement direction of the driving rack 43 driven by the driving gear 42 is opposite to the movement direction of the second rack 52 driven by the reversing gear 53, thereby making the movement direction of the telescopic panel assembly 2 opposite to that of the oil cup 3.

[0053] In the smoke machine of the present invention, Figure 6 and Figure 7 As shown, the oil cup 3 is connected to the reversing assembly 5 via the oil cup hanger 56. A clearance groove 113 is provided on the top plate 11 to allow for the oil cup hanger 56 to pass through. The oil cup hanger 56 is slidably connected to the clearance groove 113. The oil cup hanger 56 is vertically arranged and comprises a vertical rod and a horizontal plate. The lower end of the vertical rod is fixedly connected to the oil cup 3, while the upper end passes through the clearance groove 113 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 reversing assembly 5 via multiple screws. The provision of the clearance groove 113 allows the reversing assembly 5 to be connected to the oil cup 3 via the oil cup hanger 56. Furthermore, the clearance groove 113 allows the oil cup 3 and the telescopic panel assembly 2 to move synchronously in opposite directions, allowing the clearance groove 113 to provide clearance for the oil cup hanger 56.

[0054] In the smoke machine of the present invention, Figure 4 As shown, the cross-section of the oil cup 3 gradually decreases from top to bottom, and the front side wall of the oil cup 3 is tilted backward from top to bottom. The distance between the front and rear side walls of the oil cup 3 gradually decreases from top to bottom, so that the width of the oil cup 3's accommodating chamber gradually decreases downward from the opening. This ensures that the opening of the oil cup 3's accommodating chamber remains wide enough to ensure that the downward projections of the oil drip hole 112 and the air intake 111 both fall within the opening of the oil cup 3's accommodating chamber when the oil cup 3 blocks the air intake 111, allowing the oil cup 3 to simultaneously receive oil dripping from the oil drip hole 112 and the air intake 111 when the range hood is turned off. Furthermore, the overall volume of the oil cup 3 can be rationally controlled to reduce the space occupied by the oil cup 3 in the kitchen. When the range hood is turned on, the tilted front side wall of the oil cup 3 can also direct oil fumes toward the air intake 111, thereby improving the range hood's ability to absorb oil fumes.

[0055] 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) comprises a top plate (11), a telescopic inner cavity (a) and a smoke collecting cavity (b) located above the top plate (11); an air inlet (111) and an oil dripping hole (112) are provided on the top plate (11); the air inlet (111) and the oil dripping hole (112) are in communication with the smoke collecting cavity (b); a telescopic panel assembly (2) slidably connected within the telescopic inner cavity (a); An oil cup (3) is slidably connected to the top plate (11), and the opening of its accommodating cavity is always aligned with the oil dripping hole (112); A driving assembly (4) for driving the telescopic panel assembly (2); a reversing assembly (5) which is linked to the driving assembly (4) and is used to drive the oil cup (3) and to make the moving direction of the oil cup (3) opposite to the moving direction of the telescopic panel assembly (2); When the range hood is started, the drive assembly (4) drives the telescopic panel assembly (2) to extend forward out of the telescopic inner cavity (a), and the reversing assembly (5) drives the oil cup (3) to retreat along the top plate (11), and causes the air inlet (111) to be staggered with the opening of the accommodating cavity of the oil cup (3); when the range hood is shut down, the drive assembly (4) drives the telescopic panel assembly (2) to retract backward into the telescopic inner cavity (a), and the reversing assembly (5) drives the oil cup (3) to advance along the top plate (11), and causes the opening of the accommodating cavity of the oil cup (3) to cover the air inlet (111).

2. The range hood according to claim 1, characterized in that: The reversing assembly (5) comprises a first rack (51), a second rack (52) and a reversing gear (53); the first rack (51) is linked to the driving assembly (4); the second rack (52) is slidably connected to the top plate (11); the reversing gear (53) is rotatably connected to the top plate (11); the reversing gear (53) is arranged between the first rack (51) and the second rack (52) and is meshed with the first rack (51) and the second rack (52) at the same time; the oil cup (3) is connected to the second rack (52).

3. The range hood according to claim 2, characterized in that: The reversing assembly (5) further comprises a first sliding member (54) and a second sliding member (55), wherein the first sliding member (54) and the second sliding member (55) are slidably connected to the top plate (11), the first rack (51) is connected to the first sliding member (54), and the second rack (52) is connected to the second sliding member (55).

4. The range hood according to claim 2, characterized in that: The driving component (4) has a first output end and a second output end, the first output end and the second output end output the same driving direction, the first output end is connected to the telescopic panel component (2), and the second output end is used to drive the reversing component (5).

5. The range hood according to claim 4, characterized in that: The driving assembly (4) comprises a driving motor (41), a driving gear (42), a driving rack (43), a first guide member (44) and a transmission gear (45); the driving motor (41) is arranged above the top plate (11); an output end thereof is connected to the driving gear (42) and the transmission gear (45); the driving gear (42) forms a first output end of the driving assembly (4); the transmission gear (45) forms a second output end of the driving assembly (4); the first guide member (44) is slidably connected to the telescopic inner cavity (a); the driving rack (43) is connected to the first guide member (44) and meshed with the driving gear (42); the telescopic panel assembly (2) is connected to the driving rack (43); and the transmission gear (45) meshes with the first rack (51).

6. The range hood according to claim 5, characterized in that: The moving distance of the telescopic panel group (2) when extending or retracting the telescopic inner cavity (a) is L1, the moving distance of the oil cup (3) when blocking the air suction port (111) or being offset from the air suction port (111) is L2, and the wheel diameter R of the driving gear (42) and the wheel diameter r of the transmission gear (45) satisfy: R:r=L1:L2.

7. The range hood according to claim 5, characterized in that: Gear teeth are provided on both sides of the first rack (51), the gear teeth on the side away from the second rack (52) mesh with the transmission gear (45), and the gear teeth on the side close to the second rack (52) mesh with the reversing gear (53).

8. The range hood according to claim 1, characterized in that: The oil cup (3) is connected to the reversing assembly (5) via an oil cup hanger (56); a relief groove (113) for avoiding the oil cup hanger (56) is provided on the top plate (11); and the oil cup hanger (56) is slidably connected to the relief groove (113).

9. The range hood according to claim 1, characterized in that: The installation cavity of the telescopic panel assembly (2) is provided with a lighting assembly and / or an air curtain assembly and / or an air quality detection module; the top plate of the telescopic panel assembly (2) is provided with an air curtain air inlet hole (22) corresponding to the air curtain assembly and / or a detection hole (23) corresponding to the air quality detection module; the bottom plate of the telescopic panel assembly (2) is provided with an air curtain air outlet hole (24) corresponding to the air curtain assembly and / or a lighting window (25) corresponding to the lighting assembly; when the telescopic panel assembly (2) is fully extended out of the telescopic inner cavity (a), the air curtain air inlet hole (22) and / or the detection hole (23) on the top plate of the telescopic panel assembly (2) moves out of the telescopic inner cavity (a), and the air curtain air outlet hole (24) and / or the lighting window (25) on the bottom plate of the telescopic panel assembly (2) moves out of the telescopic inner cavity (a).

10. The range hood according to claim 1, characterized in that: The cross section of the oil cup (3) gradually decreases from top to bottom, and the front side wall surface of the oil cup (3) is tilted backward from top to bottom.

Images