Range hood

Abstract

The utility model discloses a range hood which comprises a range hood main body, a telescopic panel assembly and an oil cup, during starting, the exhaust inlet is opened through the oil cup, so that oil fume can be normally sucked into the fume collecting 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 method for solving the above-mentioned technical problems.

[0004] The utility model proposes a range hood, comprising a range hood main body, a telescopic panel assembly and an oil cup; the range hood main body comprises a top plate, a telescopic inner cavity and a smoke collecting cavity located above the top plate, 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 connected to the smoke collecting cavity; the telescopic panel assembly is slidably connected in the telescopic inner cavity; the oil cup is slidably connected to the top plate, and the opening of its accommodating cavity is always aligned with the oil dripping hole; wherein, when the range hood is turned on, the telescopic panel assembly extends out of the telescopic inner cavity, the oil cup moves along the top plate, and the air suction port and the opening of the accommodating cavity of the oil cup are staggered; when the range hood is turned off, the telescopic panel assembly retracts into the telescopic inner cavity, the oil cup moves along the top plate, and the opening of the accommodating cavity of the oil cup covers the air suction port.

[0005] According to one embodiment of the present invention, the range hood also includes a driving component and a linkage component. The driving component is used to drive the telescopic panel component, and the linkage component is linked with the telescopic panel component to drive the oil cup; when the range hood is started, the driving component drives the telescopic panel component to extend out of the telescopic inner cavity, and the linkage component drives the oil cup to move and stagger the air intake port and the opening of the oil cup's accommodating cavity; when the range hood is turned off, the driving component drives the telescopic panel assembly to retract into the telescopic inner cavity, and the linkage component drives the oil cup to move and make the opening of its accommodating cavity cover the air intake port.

[0006] According to one embodiment of the present invention, the air suction port is located in front of the oil dripping hole. When the linkage assembly drives the oil cup, the linkage assembly causes the oil cup and the telescopic panel assembly to move in opposite directions.

[0007] According to one embodiment of the present invention, after the telescopic panel assembly moves a distance L1, the linkage assembly drives the oil cup to move.

[0008] According to one embodiment of the present utility model, the linkage assembly includes a linkage plate, a first sliding member, a swing arm and a rotating shaft. The linkage plate is connected to the telescopic panel assembly, the first sliding member is slidably connected to the top plate, the oil cup is connected to the first sliding member, the rotating shaft is provided on the top plate, the swing arm is rotatably connected to the rotating shaft, the first end of the swing arm is connected to the linkage plate, and the second end is connected to the first sliding member. After the telescopic panel assembly moves a distance L1, the linkage plate starts to drive the first end of the swing arm to cause the swing arm to swing.

[0009] According to one embodiment of the present invention, the linkage assembly further includes a second sliding member, the second sliding member is slidably connected to the top plate, the linkage plate is connected to the second sliding member, and the first end of the swing arm is connected to the second sliding member.

[0010] According to one embodiment of the present invention, a connecting groove is provided on the linkage plate, and a connecting pin is provided on the second sliding member. The connecting pin is slidably connected to the connecting groove. The connecting groove has a first end close to the telescopic panel assembly and a second end away from the telescopic panel assembly. The displacement of the connecting pin from the first end to the second end in the connecting groove is L1. When the telescopic panel assembly is fully retracted into the telescopic inner cavity, the connecting pin is located at the first end of the connecting groove. When the length of the telescopic panel assembly extending out of the telescopic inner cavity is greater than or equal to L1, the connecting pin is located at the second end of the connecting groove.

[0011] According to one embodiment of the present invention, the oil cup is connected to the linkage 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.

[0012] 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.

[0013] According to one embodiment of the present invention, the driving assembly includes a reduction motor, a gear, a rack and a guide member. The output end of the reduction motor is connected to the gear, the rack is connected to the telescopic panel assembly, the gear is connected to the rack, the guide member is connected to the telescopic inner cavity, and the rack slides along the guide member.

[0014] Compared with the prior art, the range hood of this utility model has the following advantages:

[0015] 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 smoke 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 insects and other foreign matter 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

[0016] Figure 1 This is a structural diagram of the range hood of the present invention in a shut-down state;

[0017] Figure 2 This is a structural diagram of the range hood of the present invention in a powered-on state;

[0018] Figure 3 This is a schematic structural diagram of the range hood of the present invention in the powered-on state from another direction;

[0019] Figure 4 This is a structural cross-sectional view of the range hood of the present invention in a powered-on state;

[0020] Figure 5 This is a schematic diagram of the internal structure of the telescopic inner cavity in the present utility model;

[0021] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0022] 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. reduction motor, 42. gear, 43. rack, 44. guide, 5. linkage assembly, 51. linkage plate, 511. connecting groove, 52. first sliding member, 53. swing arm, 54. rotating shaft, 55. second sliding member, 551. connecting pin, 56. oil cup bracket.

[0023] 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

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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:

[0028] This utility model discloses a range hood. Figures 1 to 3, including a range hood body 1, a telescopic panel assembly 2 and an oil cup 3; 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, and an air suction port 111 and an oil dripping hole 112 are provided on the top plate 11, and the air suction port 111 and the oil dripping hole 112 are connected to the smoke collecting cavity b; the telescopic panel assembly 2 is slidably connected in 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; wherein, when the range hood is turned on, the telescopic panel assembly 2 extends out of the telescopic inner cavity a, the oil cup 3 moves along the top plate 11, and the air suction port 111 and the opening of the accommodating cavity of the oil cup 3 are staggered; when the range hood is turned off, the telescopic panel assembly 2 retracts into the telescopic inner cavity a, the oil cup 3 moves along the top plate 11, and the opening of the accommodating cavity of the oil cup 3 covers the air suction port 111.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] In the smoke machine of the present invention, Figure 4 As shown, the range hood further includes a drive assembly 4 and a linkage assembly 5. The drive assembly 4 is used to drive the telescopic panel assembly 2. The linkage assembly 5 is linked with the telescopic panel assembly 2 to drive the oil cup 3. When the range hood is started, the drive assembly 4 drives the telescopic panel assembly 2 to extend out of the telescopic inner cavity a. The linkage assembly 5 drives the oil cup 3 to move and stagger the air intake port 111 with the opening of the accommodating cavity of the oil cup 3. When the range hood is turned off, the drive assembly 4 drives the telescopic panel assembly 2 to retract into the telescopic inner cavity a. The linkage assembly 5 drives the oil cup 3 to move and cover the air intake port 111 with the opening of the accommodating cavity. Since the telescopic panel assembly 2 and the oil cup 3 are driven by the same drive assembly 4, the movement and stopping of the telescopic panel assembly 2 and the oil cup 3 can be controlled simultaneously by only controlling the operation and stopping of the drive assembly 4, thereby simplifying the control process. Moreover, by linking the telescopic panel assembly 2 and the oil cup 3, a set of power devices can be omitted, thereby reducing the production cost of the range hood.

[0037] In the smoke machine of the present invention, Figures 1 to 3 As shown, the air intake 111 is located in front of the oil drip hole 112. When the linkage assembly 5 drives the oil cup 3, the linkage assembly 5 causes the oil cup 3 to move in opposite directions to the telescopic panel assembly 2. 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 linkage assembly 5, causing the linkage 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 range hood's exhaust fan is running, oil fumes generated by the user's cooking flow toward 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 toward the air intake 111.

[0038] When the smoke machine 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 linkage assembly 5, causing the linkage assembly 5 to drive the oil cup 3 forward to block the air intake port 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 port 111 in the front-to-back direction, and the distance between the oil drip hole 112 and the air intake port 111. In this way, when the oil cup 3 blocks the air intake port 111, the downward projections of the oil drip hole 112 and the air intake port 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 the oil drip hole 112 and the air intake port 111 when the smoke machine is turned off.

[0039] In the range hood of the present invention, after the telescopic panel assembly 2 moves a distance L1, the linkage assembly 5 drives the oil cup 3 to move. The displacement required for the telescopic panel assembly 2 to fully extend out of the telescopic inner cavity a is greater than the displacement required for the oil cup 3 to fully open the air intake 111. The difference between the two required displacements is L1. Therefore, by staggering the movement timing of the telescopic panel assembly 2 and the oil cup 3, that is, making the timing of the oil cup 3 starting to move later than the telescopic panel assembly 2, it can be ensured that when the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity a, the oil cup 3 just fully opens the air intake 111. When the range hood is turned off, the telescopic panel assembly 2 first moves backward, at which time the oil cup 3 remains stationary. After the telescopic panel assembly 2 moves a distance L1, the oil cup 3 starts to move forward. At this time, the telescopic panel assembly 2 continues to move backward. The oil cup 3 and the telescopic panel assembly 2 stop moving after moving a distance L2. At this time, the oil cup completely blocks the air intake 111, and the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity a.

[0040] In the smoke machine of the present invention, Figure 5 and Figure 6 As shown, the linkage assembly 5 includes a linkage plate 51, a first sliding member 52, a swing arm 53 and a rotating shaft 54. The linkage plate 51 is connected to the telescopic panel assembly 2, the first sliding member 52 is slidingly connected to the top plate 11, the oil cup 3 is connected to the first sliding member 52, the rotating shaft 54 ​​is provided on the top plate 11, the swing arm 53 is rotatably connected to the rotating shaft 54, the first end of the swing arm 53 is connected to the linkage plate 51, and the second end is connected to the first sliding member 52. After the telescopic panel assembly 2 moves a distance L1, the linkage plate 51 starts to drive the first end of the swing arm 53, causing the swing arm 53 to swing.

[0041] The first end of the swing arm 53 is rotationally connected to the linkage plate 51, and the second end is rotationally connected to the first sliding member 52. When the swing arm 53 rotates, the tangential motion of its first and second ends is in opposite directions, and therefore the motion of the linkage plate 51 and the first sliding member 52 is also in opposite directions. When the range hood is turned on, the telescopic panel assembly 2 moves forward a distance L1, then drives the linkage plate 51 forward. The linkage plate 51 drives the first end of the swing arm 53 to rotate forward, causing the second end of the swing arm 53 to rotate backward. The second end of the swing arm 53 then drives the first sliding member 52 to move backward linearly. Ultimately, the first sliding member 52 drives the oil cup 3 backward, until the telescopic panel assembly 2 and the oil cup 3 continue to move a distance L2, and then stop together. When the smoke machine is turned off, the telescopic panel assembly 2 moves backward, and at the same time drives the linkage plate 51 to move backward. The linkage plate 51 drives the first end of the swing arm 53 to rotate backward, so that the second end of the swing arm 53 rotates forward, and the second end of the swing arm 53 drives the first sliding member 52 to move forward in a straight line, and finally the first sliding member 52 drives the oil cup 3 to move forward; after the telescopic panel assembly 2 and the oil cup 3 move a distance L2, the linkage plate 51 stops driving the swing arm 53. At this time, the oil cup 3 stops and completely blocks the air intake port 111, and the telescopic panel assembly 2 continues to move backward. The telescopic panel assembly 2 continues to move a distance L1 and then stops. At this time, the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity a.

[0042] In the smoke machine of the present invention, Figure 5 and Figure 6As shown, the linkage assembly 5 also includes a second sliding member 55, which is slidably connected to the top plate 11. The linkage plate 51 is connected to the second sliding member 55, and the first end of the swing arm 53 is connected to the second sliding member 55. The second sliding member 55 can both support the sliding of the linkage plate 51 and transmit the movement of the linkage plate 51 to the first end of the swing arm 53, thereby driving the swing arm 53 to rotate. When the range hood is turned on, after the telescopic panel assembly 2 moves forward a distance L1, the linkage plate 51 drives the second sliding member 55 forward. The second sliding member 55 drives the first end of the swing arm 53 to rotate forward, causing the second end of the swing arm 53 to rotate backward. The second end of the swing arm 53 then drives the first sliding member 52 to move backward in a straight line. Finally, the first sliding member 52 drives the oil cup 3 to move backward until the telescopic panel assembly 2 and the oil cup 3 continue to move a distance L2 and stop together. When the smoke machine is turned off, the telescopic panel assembly 2 moves backward, and at the same time drives the linkage plate 51 to move backward. After the telescopic panel assembly 2 and the linkage plate 51 move a distance L1, the linkage plate 51 drives the second sliding member 55 to move backward, and the second sliding member 55 drives the first end of the swing arm 53 to rotate backward, so that the second end of the swing arm 53 rotates forward, and the second end of the swing arm 53 drives the first sliding member 52 to move forward in a straight line, and finally the first sliding member 52 drives the oil cup 3 to move forward; after the telescopic panel assembly 2 and the oil cup 3 move a distance L2, the oil cup 3 stops and completely blocks the air intake port 111, and the telescopic panel assembly 2 stops. At this time, the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity a.

[0043] Specifically, such as Figure 5 and Figure 6 As shown, a connecting groove 511 is provided on the linkage plate 51, and a connecting pin 551 is provided on the second sliding member 55. The connecting pin 551 is slidably connected to the connecting groove 511. The connecting groove 511 has a first end close to the telescopic panel assembly 2 and a second end away from the telescopic panel assembly 2. The displacement of the connecting pin 551 from the first end to the second end in the connecting groove 511 is L1. When the telescopic panel assembly 2 is fully retracted into the telescopic inner cavity a, the connecting pin 551 is located at the first end of the connecting groove 511. When the length of the telescopic panel assembly 2 extending out of the telescopic inner cavity a is greater than or equal to L1, the connecting pin 551 is located at the second end of the connecting groove 511.

[0044] When the range hood is turned on, the driving assembly 4 starts and drives the telescopic panel assembly 2 to move forward, and the telescopic panel assembly 2 extends from the telescopic inner cavity a; in the process of the telescopic panel assembly 2 moving forward and extending out of the telescopic inner cavity a, the linkage plate 51 telescopic panel assembly 2 moves forward, the connecting groove 511 moves forward, and the second end of the connecting groove 511 approaches the connecting pin 551. When the telescopic panel assembly 2 moves a distance L1, the second end of the connecting groove 511 abuts against the connecting pin 551. When the telescopic panel assembly 2 drives the linkage plate 51 to continue to move forward, the linkage plate 51 will drive the second sliding member 55 to move through the connecting pin 551. The second sliding member 55 slides and drives the first end of the swing arm 53 to rotate forward, causing the second end of the swing arm 53 to rotate backward. The second end of the swing arm 53 then drives the first sliding member 52 to move backward in a straight line. Finally, the first sliding member 52 drives the oil cup 3 to move backward until the telescopic panel assembly 2 and the oil cup 3 continue to move a distance L2 and stop together; then the driving assembly 4 is turned off, and the range hood can start to extract oil smoke.

[0045] When the cigarette smoke machine is turned off and the drive assembly 4 is started, at this time, since the first end of the connecting groove 511 is not in contact with the connecting pin 551, when the drive assembly 4 drives the telescopic panel assembly 2 to retreat, the linkage plate 51 retreats with the telescopic panel assembly 2, and the second end of the connecting groove 511 approaches the connecting pin 551. The oil cup 3 is in a stationary state. When the telescopic panel assembly 2 moves a distance L1, the first end of the connecting groove 511 abuts against the connecting pin 551. When the telescopic panel assembly 2 continues to retreat, the linkage plate 51 will pass through the first end of its connecting groove 511. Acting on the connecting pin 551, the linkage plate 51 will drive the second sliding member 55 to move backward through the connecting pin 551, and the second sliding member 55 will drive the first end of the swing arm 53 to rotate backward, so that the second end of the swing arm 53 will rotate forward, and the second end of the swing arm 53 will drive the first sliding member 52 to move forward in a straight line, and finally the first sliding member 52 will drive the oil cup 3 to move forward; after the telescopic panel assembly 2 and the oil cup 3 move a distance L2, the oil cup 3 stops and completely blocks the air intake port 111, and the telescopic panel assembly 2 is completely retracted into the telescopic inner cavity a.

[0046] The connecting groove 511 is shown as a strip-shaped groove, and the connecting pin 551 is shown as a cylindrical pin. The connecting groove 511 has a first end close to the telescopic panel assembly 2, specifically the curved inner wall of the connecting groove 511 close to the telescopic panel assembly 2; the connecting groove 511 has a second end away from the telescopic panel assembly 2, specifically the other curved inner wall of the connecting groove 511 away from the telescopic panel assembly 2. The outer diameter of the cylindrical pin is equal to the diameter of the two curved inner walls of the connecting groove 511 to prevent the connecting pin 551 from getting stuck when it abuts the two curved inner walls of the connecting groove 511.

[0047] In the smoke machine of the present invention, Figure 5 and Figure 6As shown, the oil cup 3 is connected to the linkage 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 linkage assembly 5 via multiple screws. The provision of the clearance groove 113 allows the linkage assembly 5 to connect to the oil cup 3 via the oil cup hanger 56. Furthermore, the clearance groove 113 allows the oil cup hanger 56 to pass through when the oil cup 3 and the telescopic panel assembly 2 undergo synchronous reverse movement.

[0048] In the smoke machine of the present invention, Figure 5 and Figure 6 As shown, the drive assembly 4 includes a reduction motor 41, a gear 42, a rack 43 and a guide 44. The output end of the reduction motor 41 is connected to the gear 42, the rack 43 is connected to the telescopic panel assembly 2, the gear 42 is connected to the rack 43, the guide 44 is connected to the telescopic inner cavity a, and the rack 43 slides along the guide 44. The reduction motor 41 refers to an integrated body of a reducer and a motor. The output speed of the reduction motor 41 can be adjusted according to actual needs. By controlling the output speed of the reduction motor 41, the movement speed of the telescopic panel assembly 2 can be controlled. The gear 42 cooperates with the rack 43 to convert the rotation of the output end of the reduction motor 41 into the linear motion of the rack 43, so that the rack 43 drives the telescopic panel assembly 2 to perform linear motion. For example, when the output end of the reduction motor 41 rotates forward, it can drive the telescopic panel assembly 2 to move forward and extend out of the telescopic inner cavity a. When the output end of the reduction motor 41 rotates backward, it can drive the telescopic panel assembly 2 to move backward and retract into the telescopic inner cavity a. The guide member 44 extends in the front-to-back direction, and the guide member 44 can guide the movement process of the rack 43 to prevent the movement trajectory of the rack 43 from being offset, thereby preventing the movement trajectory of the telescopic panel assembly 2 from being offset, and ensuring the movement stability of the telescopic panel assembly 2.

[0049] 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 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); 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 to 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); When the range hood is turned on, the telescopic panel assembly (2) extends out of the telescopic inner cavity (a), the oil cup (3) moves along the top plate (11), and the air inlet (111) is staggered with the opening of the accommodating cavity of the oil cup (3); when the range hood is turned off, the telescopic panel assembly (2) retracts into the telescopic inner cavity (a), the oil cup (3) moves along the top plate (11), and the opening of the accommodating cavity of the oil cup (3) covers the air inlet (111).

2. The range hood according to claim 1, characterized in that: The range hood also includes a driving component (4) and a linkage component (5), wherein the driving component (4) is used to drive the telescopic panel component (2), and the linkage component (5) is linked with the telescopic panel component (2) to drive the oil cup (3); when the range hood is started, the driving component (4) drives the telescopic panel component (2) to extend out of the telescopic inner cavity (a), and the linkage component (5) drives the oil cup (3) to move and causes the air suction port (111) to be staggered with the opening of the accommodating cavity of the oil cup (3); when the range hood is turned off, the driving component (4) drives the telescopic panel component (2) to retract into the telescopic inner cavity (a), and the linkage component (5) drives the oil cup (3) to move and causes the opening of the accommodating cavity to cover the air suction port (111).

3. The range hood according to claim 2, characterized in that: The air suction port (111) is located in front of the oil dripping hole (112). When the linkage assembly (5) drives the oil cup (3), the linkage assembly (5) causes the oil cup (3) and the telescopic panel assembly (2) to move in opposite directions.

4. The range hood according to claim 2, characterized in that: After the telescopic panel assembly (2) moves a distance L1, the linkage assembly (5) drives the oil cup (3) to move.

5. The range hood according to claim 4, characterized in that: The linkage assembly (5) comprises a linkage plate (51), a first sliding member (52), a swing arm (53) and a rotating shaft (54); the linkage plate (51) is connected to the telescopic panel assembly (2); the first sliding member (52) is slidably connected to the top plate (11); the oil cup (3) is connected to the first sliding member (52); the rotating shaft (54) is provided on the top plate (11); the swing arm (53) is rotatably connected to the rotating shaft (54); a first end of the swing arm (53) is connected to the linkage plate (51), and a second end is connected to the first sliding member (52); after the telescopic panel assembly (2) moves a distance L1, the linkage plate (51) starts to drive the first end of the swing arm (53), causing the swing arm (53) to swing.

6. The range hood according to claim 5, characterized in that: The linkage assembly (5) further includes a second sliding member (55), the second sliding member (55) being slidably connected to the top plate (11), the linkage plate (51) being connected to the second sliding member (55), and the first end of the swing arm (53) being connected to the second sliding member (55).

7. The range hood according to claim 6, characterized in that: The linkage plate (51) is provided with a connecting groove (511), and the second sliding member (55) is provided with a connecting pin (551). The connecting pin (551) is slidably connected in the connecting groove (511). The connecting groove (511) has a first end close to the telescopic panel assembly (2) and a second end away from the telescopic panel assembly (2). The displacement of the connecting pin (551) from the first end to the second end in the connecting groove (511) is L1. When the telescopic panel assembly (2) is fully retracted into the telescopic inner cavity (a), the connecting pin (551) is located at the first end of the connecting groove (511). When the length of the telescopic panel assembly (2) extending out of the telescopic inner cavity (a) is greater than or equal to L1, the connecting pin (551) is located at the second end of the connecting groove (511).

8. The range hood according to claim 2, characterized in that: The oil cup (3) is connected to the linkage 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, and 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 from 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 2, characterized in that: The driving assembly (4) includes a reduction motor (41), a gear (42), a rack (43) and a guide member (44), wherein the output end of the reduction motor (41) is connected to the gear (42), the rack (43) is connected to the telescopic panel assembly (2), the gear (42) is connected to the rack (43), the guide member (44) is connected to the telescopic inner cavity (a), and the rack (43) slides along the guide member (44).

Images