Rotation structure for desktop range hood and desktop range hood

Abstract

The invention relates to the field of desktop range hoods, in particular to a rotating structure for a desktop range hood and the desktop range hood. The rotating structure for the desktop range hood comprises a range hood body, the range hood body comprises a smoke suction assembly, a base and a rotating assembly, a sliding face is arranged on the side, close to the smoke suction assembly, of the base, the section of the sliding face is in an arc or spherical shape, and the smoke suction assembly is provided with a sliding end which is attached to the sliding face and can slide relative to the sliding face. The rotating assembly drives the sliding end to slide along the sliding face so that the smoke suction assembly can rotate relative to the base. Through the arrangement of the smoke suction assembly, the base and the rotating assembly, the position of the smoke suction opening is flexibly adjusted; the base is provided with an arc-shaped or spherical sliding surface, and the smoke suction assembly can slide along the arc-shaped or spherical sliding surface to realize rotating and pitching effects, so that the problem of fixation of a smoke suction port of a traditional range hood is solved, seamless connection of the smoke suction assembly and the base is realized, cleaning is facilitated, and hands are prevented from being pinched.

Description

Technical Field

[0001] The invention relates to the field of desktop range hoods, in particular to a rotating structure for a desktop range hood and the desktop range hood. Background Art

[0002] As one of the common kitchen appliances, tabletop range hoods are mainly used to absorb the fumes and odors generated during cooking. However, the tabletop range hoods currently on the market still have some shortcomings in actual use. First, the position of the smoke outlet of the current tabletop range hood cannot be adjusted according to the specific placement of cooking utensils or changes in the cooking process, resulting in some fumes not being extracted in time when users perform different types of cooking activities. Secondly, the position of the smoke outlet of the smoke extraction device cannot be adjusted according to actual conditions, so users need to frequently adjust the position of the pot or change their standing position to adapt to the smoke extraction device.

[0003] Therefore, it is necessary to develop a rotating structure for a desktop range hood and a desktop range hood, which can adjust the position of the smoke outlet to adapt to the placement of different cooking utensils and user operation requirements, and ensure effective absorption of oil smoke. Summary of the invention

[0004] In view of the problem that the position of the smoking port of the smoking device in the prior art cannot be adjusted, which causes inconvenience to the user, the technical solution adopted by the present invention to solve the technical problem is: A rotating structure for a desktop range hood comprises a range hood body, wherein the range hood body comprises a smoke extraction component, a base, and a rotating component connecting the smoke extraction component and the base, the base is provided with a sliding surface on a side close to the smoke extraction component, the sliding surface has an arc-shaped or spherical cross-section, the smoke extraction component is provided with a sliding end which fits the sliding surface and can slide relative to the sliding surface, the sliding end is driven to slide along the sliding surface by the rotating component, so that the smoke extraction component rotates relative to the base. Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the smoking assembly is provided with a sliding cavity for the base to extend into, the sliding end is arranged on the peripheral side of the sliding cavity opening and abuts against the sliding surface, and the rotation center of the rotating assembly coincides with the center of a circle of a cross section of the sliding surface.

[0005] Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the base is provided with a rotating member installation cavity on one side of the sliding surface, and the rotating assembly includes a first rotating member fixed in the sliding cavity, and a second rotating member fixed in the rotating member installation cavity, and the first rotating member and the second rotating member are rotatably connected.

[0006] Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the first rotating member is provided with a first fixed groove located on one side thereof, a rotating member connecting end located on the side opposite to the first fixed groove, and first fixed ends respectively located on both sides of the first fixed groove, the sliding cavity is provided with a second fixed groove respectively matched with the first fixed end, a second fixed end matched with the first fixed groove, and a connecting member limiting end connected to the rotating member connecting end, and the first fixed groove and the second fixed end are T-shaped in cross-section.

[0007] Furthermore, in the scheme, a rotating structure for a desktop range hood is described, wherein the angle α between the tangent direction of the sliding surface section and the horizontal plane gradually increases from the side close to the rotating part mounting cavity to the outside, and the range of α is 30°-80°.

[0008] Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the first rotating member is provided with a first extending end located on a side close to the second rotating member, the second rotating member is provided with a second extending end located on a side close to the first rotating member, the first extending end is provided with a protruding friction rotating part, and the second extending end is provided with a friction rotating hole for the friction rotating part to extend into and rotate.

[0009] Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the second rotating member is provided with a first limit end protruding from the second extension end, and a second limit end located on a side away from the first limit end, and the first limit end and the second limit end respectively cooperate with the first rotating member to limit the rotation angle of the first rotating member.

[0010] Furthermore, in the rotating structure for a desktop range hood described in the solution, the distance L1 from the central axis of the smoke inhalation component to the center of the friction rotating part is 40-60 mm.

[0011] Furthermore, the scheme describes a rotating structure for a desktop range hood, wherein the smoking component also includes a filter fixed to the smoking port, and an oil collecting channel located on one side of the smoking port and used to collect oil and water collected by the filter, and the rotation angle β between the central axis of the smoking component and the horizontal plane ranges from 5° to 50°.

[0012] Furthermore, the desktop range hood described in the solution includes a rotating structure for the desktop range hood.

[0013] The beneficial effects of the present invention are as follows: The present invention realizes flexible adjustment of the position of the suction port of the suction port assembly by providing a suction port assembly, a base and a rotating component connecting the two parts. In addition, a sliding surface with an arc-shaped or spherical cross-section is provided on the side of the base close to the suction port assembly, and the suction port assembly is provided with a sliding end that can slide along the sliding surface, so that the suction port assembly can be rotated relative to the base in accordance with the sliding surface, thereby achieving a pitch effect, not only enabling the suction port to be adjusted in position according to the specific placement of cooking utensils and changes in the cooking process, thereby effectively solving the problem of the suction port of a traditional desktop range hood being fixed, ensuring that oil smoke and odor can be extracted in time in different types of cooking activities, improving the user's convenience and kitchen air quality, but also achieving a seamless connection between the suction port assembly and the base, avoiding the suction of oil smoke from the connection gap between the suction port assembly and the base, thereby facilitating cleaning, and preventing the user from pinching his fingers when rotating the suction port assembly; in addition, the user does not need to frequently adjust the position of the pot or change his standing position to adapt to the fixed suction port, further improving the user's cooking experience and safety.

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the appearance of a rotating structure for a desktop range hood.

[0016] Figure 2 The invention discloses an exploded schematic diagram of a rotating structure for a desktop range hood.

[0017] Figure 3 The figure is a cross-sectional schematic diagram of a rotating structure for a desktop range hood according to the present invention.

[0018] Figure 4 The present invention is a schematic diagram of the appearance of a smoking assembly of a rotating structure for a desktop range hood.

[0019] Figure 5 It is an enlarged schematic diagram of part I of a smoking assembly of a rotating structure for a desktop range hood according to the present invention.

[0020] Figure 6 The present invention is a schematic diagram of the appearance of a base of a rotating structure for a desktop range hood.

[0021] Figure 7 The present invention is a schematic cross-sectional view of a base of a rotating structure for a desktop range hood.

[0022] Figure 8 The present invention is a schematic diagram of the appearance of a rotating component of a rotating structure for a desktop range hood.

[0023] Fig. 9 The present invention is a schematic diagram of the appearance of a rotating component of a rotating structure for a desktop range hood.

[0024] Fig.10 The diagram is an exploded schematic diagram of a rotating assembly of a rotating structure for a desktop range hood according to the present invention.

[0025] Fig.11 The present invention is a schematic diagram of the appearance of a smoking assembly of a rotating structure for a desktop range hood.

[0026] Fig.12 The present invention is a cross-sectional schematic diagram of a smoking assembly of a rotating structure for a desktop range hood.

[0027] Fig.13 The present invention is a schematic diagram of the appearance of a discharge assembly of a rotating structure for a desktop range hood.

[0028] Fig.14 It is a schematic exploded view of a discharge assembly of a rotating structure for a desktop range hood according to the present invention.

[0029] Fig.15 The present invention is a cross-sectional schematic diagram of an exhaust assembly of a rotating structure for a desktop range hood.

[0030] Fig.16 It is an enlarged schematic diagram of part I of an exhaust assembly of a rotating structure for a desktop range hood according to the present invention.

[0031] Fig.17 The present invention is a schematic diagram of the appearance of a control component of a rotating structure for a desktop range hood.

[0032] Fig.18 The figure is an exploded schematic diagram of a control assembly of a rotating structure for a desktop range hood according to the present invention.

[0033] Fig.19 The present invention is a cross-sectional schematic diagram of a control component of a rotating structure for a desktop range hood.

[0034] Fig. 20 The figure is a schematic diagram of the appearance of the desktop range hood of the present invention. DETAILED DESCRIPTION

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1: Figure 1-19A rotating structure for a desktop range hood is shown, comprising a range hood body 2, wherein the range hood body 2 comprises a smoking component 1, a base 3, and a rotating component 4 connecting the smoking component 1 and the base 3, the base 3 is provided with a sliding surface 31 on a side close to the smoking component 1, the sliding surface 31 is arc-shaped or spherical in cross section, the smoking component 1 is provided with a sliding end 17 which fits the sliding surface 31 and can slide relative to the sliding surface 31, the sliding end 17 is driven by the rotating component 4 to slide along the sliding surface 31, so that the smoking component 1 rotates relative to the base 3.

[0037] The present invention realizes flexible adjustment of the position of the smoking port of the smoking component 1 by providing a smoking component 1, a base 3 and a rotating component 4 connecting the two parts. In addition, by providing a sliding surface 31 with an arc-shaped or spherical cross-section on the side of the base 3 close to the smoking component 1, and providing the smoking component 1 with a sliding end 17 that can slide along the sliding surface 31, the smoking component 1 can be rotated relative to the base 3 in accordance with the sliding surface 31, thereby achieving a pitch effect, not only enabling the smoking port to be adjusted in position according to the specific placement of cooking utensils and changes in the cooking process, thereby effectively solving the problem of the smoking port of a traditional desktop range hood being fixed, ensuring that oil smoke and odor can be extracted in time in different types of cooking activities, improving the user's convenience and kitchen air quality, but also achieving seamless connection between the smoking component 1 and the base 3, avoiding the oil smoke from being sucked into the connection gap between the smoking component 1 and the base 3, thereby facilitating cleaning, and preventing the user from pinching his fingers when rotating the smoking component 1; in addition, the user does not need to frequently adjust the position of the pot or change his standing position to adapt to the fixed smoking port, further improving the user's cooking experience and safety.

[0038] Specifically, the present invention enables the smoking component 1 to achieve flexible rotation and position adjustment through the rotating component 4. The user can freely adjust the position of the smoking port according to different cooking needs to ensure the best oil fume absorption effect. Secondly, the setting of the rotating component 4 simplifies the user's operation process. The direction and height of the smoking port can be easily adjusted without complicated tools or steps, which greatly improves the user experience; further, by setting a sliding surface 31 with an arc-shaped or spherical cross-section, and setting a sliding end 17 on the smoking component 1 that slides relative to the sliding surface 31, in this embodiment, the sliding surface 31 is set in an arc-shaped cross-section, which ensures that the smoking component 1 can be moved along the sliding surface 31 when adjusting its position. The sliding surface 31 is used to move along the arc track of the sliding surface 31, so that the smoking component 1 can be adjusted to a certain angle, and the smoothness and stability of the smoking component 1 when rotating relative to the base 3 are improved, avoiding shaking or instability caused by position adjustment; further, this setting not only prevents oil smoke from entering the interior of the device from the connection gap between the smoking component 1 and the base 3, thereby increasing the cleaning difficulty for the user, but also prevents the user from accidentally pinching his hand in the connection gap between the smoking component 1 and the base 3 when adjusting the pitch angle of the smoking component 1; further, in some embodiments, in order to enhance the connection stability between the smoking component 1 and the base 3, a A plurality of tiny grooves or protrusions are arranged on the surface 31, and these grooves or protrusions can form a friction fit with the sliding end 17 on the smoking component 1. When the smoking component 1 moves along the sliding surface 31, these grooves or protrusions provide additional friction to prevent the smoking component 1 from sliding by itself without external force. Furthermore, in some embodiments, magnetic materials can be used to enhance the connection strength between the smoking component 1 and the base 3. Specifically, a magnetic component is embedded on the sliding surface 31, and a corresponding metal sheet is installed on the sliding end 17. When the smoking component 1 is placed on the base 3, the magnetic component will generate attraction to firmly fix the smoking component 1 in the current position, thereby The stability and reliability of the overall structure are increased. At the same time, this setting will not affect the rotation function of the smoking component 1, and the user can still easily adjust the position of the smoking component 1 by applying appropriate external force; further, in some embodiments, the smoking component 1 can not only rotate in one direction relative to the base 3, but also can be adjusted at multiple angles in three-dimensional space along the arc trajectory of the sliding surface 31 on the base 3 by setting the rotating component 4 to a universal rotating structure. The rotating component 4 can be a joint bearing; further, in some other embodiments, the cross-section of the sliding surface 31 is spherical, and the shape of the sliding end 17 matches the shape of the sliding surface 31.

[0039] Embodiment 2: Further, as Figure 1-19A rotating structure for a desktop range hood is shown, wherein the smoking component 1 is provided with a sliding cavity 110 for the base 3 to extend into, the sliding end 17 is provided on the peripheral side of the cavity opening of the sliding cavity 110 and abuts against the sliding surface 31, and the rotation center of the rotating component 4 coincides with the center of the cross section of the sliding surface 31.

[0040] This embodiment includes the features of the first embodiment, and is different from the first embodiment in that the present invention improves the connection stability between the smoking component 1 and the base 3 by providing a sliding cavity 110 for the base 3 to extend into the smoking component 1, so that the smoking component 1 can be firmly installed on the base 3; further, the sliding end 17 is provided on the peripheral side of the cavity opening of the sliding cavity 110 and abuts against the sliding surface 31, and the setting of the smoking component 1 sliding in contact with the sliding surface 31 makes the smoking component 1 and the base 3 seamlessly connected, thereby preventing the smoke from being sucked into the connection gap between the smoking component 1 and the base 3; further, the setting that the rotation center of the rotating component 4 coincides with the center of the cross section of the sliding surface 31 ensures that the smoking component 1 can maintain optimal balance and stability during rotation, and can also reduce additional stress and wear caused by eccentricity, thereby extending the service life of the device; further, this setting helps to achieve smoother and more precise angle adjustment, so that the user can more conveniently adjust the position of the smoking component according to actual needs. and angle to achieve a better adjustment effect; further, in some embodiments, an elastic sealing ring can be arranged around the cavity opening of the sliding cavity 110. When the smoking component 1 is installed on the base 3, the sealing ring will be squeezed, thereby filling the small gap between the smoking component 1 and the base 3 to prevent the smoke from being inhaled from these gaps. In addition, the sealing ring can also play a certain friction role, so as to better ensure that the smoking component 1 and the base 3 remain in relative positions when the smoking component 1 is rotated to the required angle; further, in some embodiments, when the user needs to replace the base 3 according to the use environment, a plurality of adjustable buckle assemblies can be arranged around the cavity opening of the sliding cavity 110. The size of the cavity opening of the sliding cavity 110 and the tightness can be adjusted according to the size of the base 3 through the buckle device; further, in some embodiments, the buckle assembly can be set with a spring compression setting. When the smoking component 1 is installed on the base 3, the spring will automatically adjust the position of the buckle to ensure that the smoking component 1 and the base 3 always maintain close contact.

[0041] Embodiment 3: Further, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the base 3 is provided with a rotating member mounting cavity 32 on one side of the sliding surface 31, and the rotating assembly 4 includes a first rotating member 41 fixed in the sliding cavity 110, and a second rotating member 42 fixed in the rotating member mounting cavity 32, and the first rotating member 41 and the second rotating member 42 are rotatably connected.

[0042] This embodiment includes the features of the second embodiment, and is different from the second embodiment in that the present invention realizes the rotation function of the smoking component 1 relative to the base 3 by providing a first rotating member 41 fixed in the sliding cavity 110 of the smoking component 1 and a second rotating member 42 fixed in the rotating member installation cavity 32 of the base 3, and the first rotating member 41 and the second rotating member 42 are rotatably connected. This arrangement enables the smoking component 1 to rotate freely relative to the base 3, thereby achieving the adjustment of the position of the smoking port. Specifically, when the user needs to adjust the position of the smoking port, he only needs to gently push the smoking component 1, and it can move smoothly along the sliding surface 31; further, a damping structure is provided between the first rotating member 41 and the second rotating member 42, so that the smoking component 1 can stay at a required angle; further, in some other embodiments, a damping structure can be provided at the smoking port. A fume sensor is provided, and the first rotating member 41 is controlled by a motor to automatically rotate around the second rotating member 42, thereby realizing the function of automatically adjusting the angle of the smoking port according to the fume concentration, and further improving the smoking efficiency; further, in some embodiments, a wear-resistant coating can be provided between the first rotating member 41 and the second rotating member 42 to increase the wear resistance of the first rotating member 41 and the second rotating member 42, thereby extending the service life of the equipment. In addition, the wear-resistant coating can also reduce the friction coefficient between the first rotating member 41 and the second rotating member 42, reduce the force required for the user to rotate the smoking component 1, and improve the user's operating experience; further, in some embodiments, a bearing can also be provided between the first rotating member 41 and the second rotating member 42, and the bearing can reduce the friction resistance during rotation, so that the smoking component 1 can rotate more smoothly.

[0043] Embodiment 4: Further, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the first rotating member 41 is provided with a first fixed groove 411 located on one side thereof, a rotating member connecting end 412 located on the side opposite to the first fixed groove 411, and first fixed ends 413 respectively located on both sides of the first fixed groove 411, the sliding cavity 110 is provided with a second fixed groove 1101 respectively matched with the first fixed end 413, a second fixed end 1102 matched with the first fixed groove 411, and a connecting member limiting end 1103 connected to the rotating member connecting end 412, and the first fixed groove 411 and the second fixed end 1102 are arranged in a T-shape in cross-section.

[0044] This embodiment includes the features of the third embodiment, and is different from the third embodiment in that the present invention provides a first fixing groove 411 located on one side of the first rotating member 41, a rotating member connecting end 412 located on the side opposite to the first fixing groove 411, and first fixing ends 413 located on both sides of the first fixing groove 411, so as to ensure that the first rotating member 41 can be inserted into the second fixing end 1102 in the sliding cavity 110 by inserting the first fixing groove 411 into the second fixing end 1101 in the sliding cavity 110, and the first fixing end 413 can be inserted into the second fixing groove 1101 in the sliding cavity 110 by inserting the first fixing groove 411 into the second fixing end 1102 in the sliding cavity 110, and the first fixing end 413 can be inserted into the second fixing groove 1101 in the sliding cavity 110 by inserting the first fixing groove 411 into the second fixing groove 1101 in the sliding cavity 110, and the first fixing end 413 can be inserted into the second fixing groove 1101 in the sliding cavity 110 by inserting the first fixing groove 411 into ... The connection of the connecting member limit end 1103 in the movable cavity 110 not only fixes the first rotating member 41 in the sliding cavity 110, but also improves the connection strength between the smoking component 1 and the rotating component 4, making the entire rotating structure more stable and reliable; further, by setting the cross-section of the first fixed groove 411 and the second fixed end 1102 in a T-shape, the strength and rigidity of the connection part are enhanced to prevent loosening or deformation during long-term use; further, this arrangement also facilitates the installation and disassembly of the rotating component 4, making it convenient for users to perform daily maintenance and cleaning.

[0045] Embodiment 5: Further, as Figure 1-19 The rotating structure for a desktop range hood is shown, wherein the angle α between the tangent direction of the cross section of the sliding surface 31 and the horizontal plane gradually increases from the side close to the rotating member installation cavity 32 to the outside, and the range of α is 30°-80°.

[0046] This embodiment includes the features of the fourth embodiment, and is different from the fourth embodiment in that the present invention sets the angle α between the cross-sectional tangent direction of the sliding surface 31 and the horizontal plane to a structure that gradually increases from the side close to the rotating member mounting cavity 32 to the outside at a range of 30°-80°, thereby fully considering the force applied to the sliding end 17 of the smoking assembly 1 in different areas during its rotation. Specifically, when the user pushes the smoking assembly 1 forward to tilt it forward, the sliding surface 31 contacted by the sliding end 17 close to the front end of the base 3 increases due to the angle α, which can make the smoking port form a larger downward inclination, thereby being closer to the cookware to quickly capture the oil smoke diffused in the low altitude. Since the rear end of the sliding end 17 is close to the rotating member mounting cavity 32, the sliding surface 31 contacted by the rear end of the sliding end 17 has a smaller angle α, which can provide better support for the smoking assembly 1. The support of the rear end of the smoking assembly 1 by the sliding surface 31 with a smaller angle α is relatively When the rear end of the sliding end 17 is hung on the sliding surface 31, the tendency of the smoking assembly 1 to continue to tilt forward is weakened, so that the smoking assembly 1 can be better maintained at the required angle, and the force required for the rotating assembly 4 to maintain the relative position of the smoking assembly 1 and the base 3 is reduced; further, if the angle α is less than 30°, the inclination of the sliding surface 31 is insufficient, which will cause the rear end of the sliding end 17 of the smoking assembly 1 to be unable to effectively hang on the sliding surface 31 during the rotation of the smoking assembly 1, resulting in a lack of effective supporting force at the rear end of the smoking assembly 1, especially when a large forward tilt is required, the smoking assembly 1 may be unstable and easy to shake. On the contrary, if the angle α is greater than 80°, although a larger downward tilt range of the smoking assembly 1 can be achieved, an excessively large tilt angle will make the smoking assembly 1 unstable when it is close to the vertical position, increasing the risk of accidental tipping, further affecting the safety and reliability of use.

[0047] Embodiment 6: Further, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the first rotating member 41 is provided with a first extending end 414 located on a side close to the second rotating member 42, the second rotating member 42 is provided with a second extending end 421 located on a side close to the first rotating member 41, the first extending end 414 is provided with a protruding friction rotating portion 4141, and the second extending end 421 is provided with a friction rotating hole 4211 for the friction rotating portion 4141 to extend into and rotate.

[0048] This embodiment includes the features of the fifth embodiment, and is different from the fifth embodiment in that, the present invention enables the first rotating member 41 to stay at a desired angle relative to the second rotating member 42 through the cooperation of the friction rotating portion 4141 and the friction rotating hole 4211, thereby realizing the positioning of the smoking assembly 1 at different angles; further, in some embodiments, the friction force between the first rotating member 41 and the second rotating member 42 ensures that the first rotating member 41 can stay stably at any angle; further, in some embodiments, a spring pre-tightening device is provided in the second rotating member 42, and the friction rotating hole 4211 is adjusted by the pressure of the spring to prevent the second rotating member 42 from being stuck. The pressure applied by the friction rotating part 4141 adjusts the friction force to ensure that the first rotating part 41 can stay stably at any angle; further, in some embodiments, by setting one or more permanent magnets on the first extension end 414, and setting an electromagnet with adjustable strength at the corresponding position of the second extension end 421, when the smoking component 1 is adjusted to the corresponding position, the current of the electromagnet is adjusted to change its magnetic field strength, thereby controlling the attraction or repulsion of the permanent magnet, so that the first rotating part 41 can stay stably at a specific angle and can easily switch between different angles; further, in some embodiments, A set of matching gears and racks is provided between the first extension end 414 and the second extension end 421. When the user adjusts the smoking assembly 1 to a desired angle, the pinion can be meshed with the rack manually or electrically to lock the current angle. In addition, in order to facilitate user operation, a locking button or knob can be added to the device to simplify the locking and unlocking process. Furthermore, in some embodiments, a hydraulic damper is installed between the first rotating member 41 and the second rotating member 42. When the first rotating member 41 rotates relative to the second rotating member 42, the hydraulic oil will provide appropriate resistance to prevent rapid rotation and help maintain the selected In addition, by adjusting the viscosity of the hydraulic oil or the pressure inside the damper, the required resistance level can be precisely controlled to ensure the stability of the smoking assembly 1 at various angles; further, in some embodiments, the first extension end 414 and the second extension end 421 are circular in cross-section, the first extension end 414 is located near the second extension end 421 and is provided with a rack continuously arranged along the circumferential direction, and the second extension end 421 is located near the first extension end 414 and is also provided with a corresponding rack. When the first rotating member 41 rotates, the rack on the first extension end 414 and the rack on the second extension end 421 engage with each other to lock the current angle.

[0049] Embodiment 7: Further, as Figure 1-19A rotating structure for a desktop range hood is shown, wherein the second rotating member 42 is provided with a first limiting end 422 protruding from the second extension end 421, and a second limiting end 423 located on a side away from the first limiting end 422, the first limiting end 422 and the second limiting end 423 respectively cooperate with the first rotating member 41 to limit the rotation angle of the first rotating member 41.

[0050] This embodiment includes the features of the sixth embodiment, and is different from the sixth embodiment in that, the present invention provides a first limiting end 422 protruding from the second extension end 421 and a second limiting end 423 located on a side away from the first limiting end 422 on the second rotating member 42, so that the first limiting end 422 and the second limiting end 423 respectively cooperate with the first rotating member 41, thereby limiting the rotation angle of the first rotating member 41. This arrangement not only improves the safety and stability of the device, but also ensures that the smoking assembly 1 can be flexibly adjusted within a preset angle range. Specifically, the first limiting end 422 and the second limiting end 423 function to prevent the smoking assembly from being damaged or accidentally detached from the base 3 due to excessive rotation. , and at the same time, it can also avoid the risks caused by user misoperation; further, in some embodiments, in order to further enhance the function of the limit end, an adjustable limit screw can be set on the first limit end 422 and the second limit end 423, and the user can adjust the extension length of the limit screw according to actual needs, thereby changing the rotation range of the first rotating member 41; further, in some embodiments, an elastic stop block can be set on the first limit end and the second limit end, and the elastic stop block can be made of elastic materials such as rubber or polyurethane. When the first rotating member 41 approaches the limit end, the elastic stop block will be squeezed, thereby providing a certain buffering effect and reducing the hard collision between the first rotating member 41 and the limit end.

[0051] Embodiment 8: Further, as Figure 1-19 The rotating structure shown is for a desktop range hood, wherein the distance L1 from the central axis of the smoke inhalation component 1 to the center of the friction rotating part 4141 is 40-60 mm.

[0052] This embodiment includes the features of Embodiment 7, and differs from Embodiment 7 in that, in the present invention, the distance L1 from the central axis of the smoking component 1 to the center of the friction rotating part 4141 is 40-60 mm. This setting helps to optimize the overall structure of the smoking component 1 and ensure its stability and flexibility at different angles. Specifically, when the smoking component 1 is adjusted or in working condition, the position of its center of gravity will change with the change of angle. By reasonably setting the distance L1, a more uniform torque distribution can be achieved at different angles, avoiding instability or operating difficulties caused by excessive torque. In a normal state, the smoking component 1 will be in a forward tilted state. When the smoking component 1 needs to be moved forward further, the center of gravity of the smoking component 1 moves forward. By setting the distance L1 from the central axis of the smoking component 1 to the center of the friction rotating part 4141 between 40-60 mm, the torque is kept within a reasonable range, and the problem of the range hood tipping over due to the excessive weight of the front end of the smoking component 1 will not occur. At the same time, the friction rotating part 4141 is also made closer to the central axis of the smoking component 1, which helps to reduce the initial torque required for user operation, so that the user can make initial adjustments more easily. Furthermore, if L1 is less than 40 mm, the smoking component 1 will be too close to the base 3, and the user will need a lot of force to rotate the smoking component 1, thereby It affects its rotation flexibility. If L1 is greater than 60mm, the center of gravity of the smoking assembly 1 will be too high, reducing stability and increasing the risk of the range hood tipping over. By setting the distance L1 from the central axis of the smoking assembly 1 to the center of the friction rotating part 4141 within the range of 40-60mm, the overall performance and usage experience of the desktop range hood can be effectively improved; further, in some embodiments, by adding an adjustable support rod between the smoking assembly 1 and the base 3, the distance from the central axis of the smoking assembly 1 to the center of the friction rotating part 4141 can be adjusted, so that the smoking assembly 1 can be retracted, but the adjustment range must be between 40-60mm; further, in this embodiment, L1 is 40mm.

[0053] Embodiment 9: Further, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the smoking component 1 also includes a filter 19 fixed to the smoking port 111, and an oil collecting channel 120 located at one side of the smoking port 111 and used to collect oil and water collected by the filter 19, and the rotation angle β between the central axis of the smoking component 1 and the horizontal plane ranges from 5° to 50°.

[0054] This embodiment includes the features of the eighth embodiment, and is different from the eighth embodiment in that, in the present invention, the rotation angle β between the central axis of the smoke extraction component 1 and the horizontal plane ranges from 5° to 50°. This setting helps to optimize the position of the smoke extraction component 1 so that it can better adapt to different cooking needs and kitchen layouts. Specifically, the setting of the β angle directly affects the specific placement of the smoke extraction port relative to the cookware, thereby affecting the effect of oil fume absorption. When the β angle is set between 5° and 50°, the smoke extraction component 1 can achieve the best oil fume absorption effect, making the smoke extraction port closer to the surface of the cookware, improving the smoking efficiency, and making the smoke extraction port better cover the rising oil fume to ensure comprehensive absorption; further, this angle setting can also ensure that the smoke extraction component 1 is at different pitch angles, and the oil collection channel 120 can receive the oil and water collection flowing downward from the filter 19; further, if the β angle is less than 5°, first It will cause the smoke outlet to be too close to the cookware, making it easily affected by the heat source, increasing the risk of overheating of the equipment, and may even damage the material and structure of the smoke extraction component 1. Secondly, the smoke extraction port being too close to the cookware may also cause excessive local suction, so that some oil smoke cannot be effectively extracted, but instead diffuses into the surrounding environment, reducing the overall smoking efficiency. In addition, it may also cause the smoke extraction component 1 to collide with the cookware or other kitchen utensils in actual use, affecting the user's operating experience. Furthermore, if the β angle is greater than 50°, firstly, the smoke extraction port will be far away from the cookware and will not be able to effectively capture the rising oil smoke. Secondly, it will also cause the overall center of gravity of the smoke extraction component 1 to shift, increasing the risk of the equipment tipping over or loosening. In addition, it will also narrow the rotatable angle range of the smoke extraction component 1, resulting in a limited rotation range of the smoke extraction component 1, affecting its flexibility, thereby reducing the user's operating convenience.

[0055] Embodiment ten, as Figure 1-19A rotating structure for a tabletop range hood is shown, wherein the smoke extraction component 1 includes an exhaust component 11, a drive component 12 located in the exhaust component 11, and a control component 16 for controlling the operation of the drive component 12, the exhaust component 11 is provided with an exhaust port 111 located at one end thereof, and an exhaust port 112 located at the other end thereof, the control component 16 includes a flow guide housing 161, the exhaust port 112 is provided with an exhaust port inner wall 1121, the central axis of the flow guide housing 161 coincides with the central axis of the exhaust port 112, and the flow guide housing 161 is provided with a flow guide portion extending toward one side of the exhaust port 111 1611, the guide portion 1611 is located in the inner cavity of the discharge port 112, and a discharge channel 1123 is formed between the inner wall 1121 of the discharge port and the guide shell 161. The drive component 12 drives the oil smoke to be sucked in from the smoking port 111 and discharged from the discharge channel 1123 at an angle. The discharge component 11 is also provided with a drive component mounting portion 115 connected to the discharge component cavity 114, and the central axis of the drive component mounting portion 115 coincides with the central axis of the discharge component cavity 114. The guide shell 161 and the drive component mounting portion 115 are connected near the discharge port 112.

[0056] This embodiment includes the features of the ninth embodiment, and is different from the ninth embodiment in that the present invention controls the switch of the driving component 12 and adjusts its smoking speed by setting a control component 16, so as to flexibly respond to the oil fume treatment needs under different cooking conditions; in addition, by installing the guide shell 161 in the middle position of the exhaust port 112, it not only effectively blocks the oil fume and prevents the oil fume from being blown out directly from the exhaust port 112, thus avoiding direct impact on the surrounding environment and users, but also saves the structural space of the smoking component 1, making the overall structure more compact; in addition, an exhaust channel 1123 arranged at an angle to the central axis of the exhaust component 11 is formed between the inner wall 1121 of the exhaust port and the guide shell 161, so that the oil fume can be discharged from the exhaust channel 1123 on the side of the exhaust port 112 at a certain angle, thereby achieving effective dispersion of the oil fume, avoiding the phenomenon of direct exhaust and direct blowing of the oil fume, and alleviating the problem of blowing force gathering during oil fume discharge. At the same time, in conjunction with the rotatable smoking component 1, the user can adjust the exhaust port 11 according to the needs. 2, thereby discharging the oil fume to the required position; further, by coinciding the central axis of the guide shell 161 with the central axis of the exhaust port 112, that is, installing the guide shell 161 in the middle position of the exhaust port 112, the dispersion of the oil fume emission is enhanced. Specifically, the setting of the guide shell 161 not only effectively blocks the oil fume from being blown out directly from the exhaust port 112, but also guides the oil fume into the exhaust channel 1123 and then flows to the exhaust port inner wall 1121 through the guide part 1611, and then is discharged along the exhaust port inner wall 1121, thereby achieving a more uniform oil fume distribution; further, by setting a drive component mounting part 115 connected to the middle position of the exhaust component cavity 114, and connecting the guide shell 161 to the drive component mounting part 115, the guide shell 161 is installed in the middle position of the exhaust port 112; further, in some embodiments, an aromatherapy component can also be set at the smoking port 111, so that the oil fume can be mixed with the aromatherapy and then discharged into the air to eliminate the irritating smell.

[0057] Embodiment eleven, as Figure 1-19 The shown is a rotating structure for a desktop range hood, wherein the discharge port 112 is trumpet-shaped in cross section, the guide portion 1611 is provided with a guide surface 16111 for guiding the oil smoke to move toward the inner wall 1121 of the discharge port, the inner wall 1121 of the discharge port is wavy in cross section, and the guide surface 16111 is arc-shaped.

[0058] This embodiment includes the features of the tenth embodiment, and is different from the tenth embodiment in that, in the present invention, the cross-section of the discharge port 112 is horn-shaped, and this arrangement can reduce the airflow velocity gradient, which can not only reduce the impact force of the oil smoke, but also improve the oil smoke discharge efficiency; further, the guide portion 1611 is provided with an arc-shaped guide surface 16111 for guiding the oil smoke to move toward the inner wall 1121 of the discharge port, and the arc-shaped guide surface 16111 guides the oil smoke to move along its arc-shaped surface, thereby forcing the oil smoke to flow to the inner wall 1121 of the discharge port, so that the oil smoke forms a diffusion form during the discharge process, reducing the impact force of the oil smoke when entering the discharge channel 1123; further, through the cooperation between the inner wall 1121 of the discharge port and the guide surface 16111, the oil smoke can be diffused at a certain angle during the discharge process, thereby avoiding the vortex disturbance caused by the traditional right-angle structure, reducing the airflow rewinding phenomenon, and also avoiding the traditional The direct blowing structure reduces the impact force of oil smoke when it is discharged; by setting the cross-section of the inner wall 1121 of the discharge port to be wavy, this setting can guide the oil smoke to flow along the wavy surface of the inner wall 1121 of the discharge port, thereby optimizing the discharge path of the oil smoke, making it more evenly distributed in the discharge channel 1123, and effectively reducing the impact force of the oil smoke on the discharge process; further, the wavy inner wall 1121 of the discharge port and the arc-shaped guide surface 16111 cooperate, so that the arc-shaped guide surface 16111 can guide the airflow to flow toward the inner wall 1121 of the discharge port, and form periodic bends through the wavy inner wall 1121 to disturb the airflow, induce the discharged oil smoke to form a vortex, make the diffusion of the oil smoke slower and more even, and better diffuse into the air, while avoiding the problem of yellowing of the wall due to the oil smoke being directly blown out when the range hood is placed on the wall.

[0059] Embodiment 12, as Figure 1-19 The rotating structure for a desktop range hood is shown, wherein the radial width of the discharge channel 1123 gradually decreases from the side of the inhalation port 111 to the side of the discharge port 112 .

[0060] This embodiment includes the features of the eleventh embodiment, and differs from the eleventh embodiment in that the present invention achieves more efficient oil fume discharge by gradually reducing the radial width of the discharge channel 1123 from the side of the smoking port 111 to the side of the discharge port 112. Specifically, as the oil fume moves from the discharge channel 1123 located on the side of the smoking port 111 toward the discharge port 112, the channel gradually narrows. This change causes the oil fume to be discharged at a higher speed. In addition, with the setting of the discharge angle of the discharge channel 1123, the oil fume discharged at a high speed can be effectively guided and dispersed, which not only improves the discharge speed of the oil fume, makes the oil fume be discharged farther, and avoids the concentrated deposition of the oil fume in a local area, but also ensures that the oil fume will not directly impact the user or surrounding objects when discharged at a high speed.

[0061] Embodiment 13, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the cross section of the inner wall 1121 of the discharge port is set at an angle Γ with the central axis of the discharge component 11, and the angle range of Γ is 20°-80°.

[0062] This embodiment includes the features of the twelve embodiment, and is different from the twelve embodiment in that the cross-section of the inner wall 1121 of the discharge port in the present invention is set at an angle Γ with the central axis of the discharge component 11, and the angle range of Γ is 20°-80°. This setting further optimizes the discharge path of the oil fume. Specifically, when the angle Γ is set between 20° and 80°, it can effectively balance the speed and direction of the oil fume discharge, ensure that the oil fume is evenly diffused and does not directly impact the surrounding objects, and reduce the risk of contamination to furniture and other items. If the angle Γ is greater than 80°, the oil fume will be too perpendicular to the central axis of the discharge component 11, so that the airflow expansion angle is too large, resulting in too fast flow rate decay, thereby shortening the diffusion distance of the oil fume, causing the oil fume to easily concentrate in a local area close to the desktop range hood. On the contrary, if the angle Γ is less than 20°, the airflow guide angle is too small, the exhaust airflow is concentrated and sprayed forward, and will directly impact the surrounding objects. Further, in this embodiment, L1 is 40mm and the Γ angle is 20°.

[0063] Embodiment 14, as Figure 1-19 A rotating structure for a desktop range hood is shown, wherein the discharge component 11 is also provided with a discharge component cavity 114 connecting the suction port 111 and the discharge port 112, the discharge channel 1123 is provided with an entry area 11231 connected to the discharge component cavity 114 and used for oil smoke to enter, and a discharge area 11232 for discharging oil smoke, the cross-section of the discharge area 11232 is annular, the discharge component cavity 114 is provided with a first constant diameter section 13 connected to the suction port 111, a second constant diameter section 14 connected to the discharge port 112, and a third constant diameter section 15 connecting the first constant diameter section 13 and the second constant diameter section 14 through a gradual transition section, the diameter of the third constant diameter section 15 is larger than the diameter of the first constant diameter section 13 and the second constant diameter section 14, and the annular radial width S3 of the cross-section of the discharge area 11232 is 1 / 6-1 / 4 of the diameter S4 of the second constant diameter section 14.

[0064] This embodiment includes the features of the thirteenth embodiment, and differs from the thirteenth embodiment in that, in the present invention, the discharge component 11 is provided with an discharge component cavity 114 connecting the smoking port 111 and the discharge port 112, and the discharge channel 1123 is provided with an inlet area 11231 connected to the discharge component cavity 114 and a discharge area 11232 for discharging oil smoke, wherein the discharge area 11232 is arranged in an annular cross-section, thereby realizing multi-directional discharge of oil smoke, thereby improving the uniformity and diffusion efficiency of gas discharge, and avoiding the problem of local oil smoke accumulation caused by traditional unidirectional direct discharge; further, by providing a third constant diameter section 15 in the discharge component cavity 114, and making its diameter larger than the diameters of the first constant diameter section 13 and the second constant diameter section 14, and connecting these constant diameter sections by a gradual transition section, the airflow path is optimized. Specifically, the setting of the gradual transition section makes the airflow smoother when transitioning from the first constant diameter section 13 with a smaller diameter to the third constant diameter section 15 with a larger diameter, and then to the second constant diameter section 14 with a smaller diameter, thereby reducing turbulence and noise are reduced, and the overall user experience is improved; further, the annular radial width S3 of the cross-section of the discharge area 11232 is 1 / 6-1 / 4 of the diameter S4 of the second constant diameter section 14. This ratio setting ensures the uniformity and diffusion efficiency of the oil fume discharge. If the annular radial width S3 is greater than 1 / 4 of the diameter S4 of the second constant diameter section 14, the discharge area 11232 will be too wide, and the gas discharge speed will be too slow, resulting in the oil fume not diffusing far enough, causing local concentration. On the contrary, if the annular radial width S3 is less than 1 / 6 of the diameter S4 of the second constant diameter section 14, the discharge area 11232 will be too narrow, causing the gas discharge speed to be too fast, which is easy to generate turbulence and noise, and will also cause a strong airflow impact on the surrounding objects. Therefore, this setting not only ensures the efficiency of oil fume discharge, but also reduces the impact of oil fume on the surrounding environment; further, in this embodiment, L1 is 40mm, the Γ angle is 20°, and the annular radial width S3 of the discharge area 11232 is 1 / 6 of the diameter S4 of the second constant diameter section 14.

[0065] Embodiment 15: This embodiment includes all the features of embodiments 1 to 14, with the difference that in this embodiment, the distance L1 from the central axis of the smoking component 1 to the center of the friction rotating part 4141 is 60 mm, the Γ angle is 80°, and the annular radial width S3 of the discharge area 11232 is 1 / 4 of the diameter S4 of the second constant diameter section 14.

[0066] Embodiment 16: This embodiment includes all the features of embodiments 1 to 14, with the difference that in this embodiment, the distance L1 from the central axis of the smoking component 1 to the center of the friction rotating part 4141 is 55 mm, the Γ angle is 45°, and the annular radial width S3 of the discharge area 11232 is 1 / 5 of the diameter S4 of the second constant diameter section 14.

[0067] Embodiment 17: Further, as Figure 1-20The desktop range hood shown includes a rotating structure for the desktop range hood.

[0068] This embodiment includes all the features of embodiments one to twelve, and the difference is that the present invention improves the functionality and user experience of the desktop range hood by integrating a rotating structure for the desktop range hood into the desktop range hood. Specifically, the rotating structure includes a smoking component 1, a base 3 and a rotating component 4 connecting the two parts. Through the coordinated work of these components, the position of the smoking port on the smoking component 1 is flexibly adjusted; further, the base 3 is provided with a sliding surface 31 on the side close to the smoking component 1, and the smoking component 1 is provided with a sliding end 17 that can slide relative to the sliding surface 31. The sliding end 17 is driven by the rotating component 4 to fit and slide along the sliding surface 31, so that the smoking component 1 can be adjusted according to the specific position of the cooking utensil. The position can be adjusted according to changes in placement and cooking processes; further, the use of this rotating structure in conjunction with the desktop range hood solves the problem of the fixed smoke outlet of the traditional desktop range hood, so that the smoke outlet can be flexibly adjusted to adapt to different types of cooking activities. This setting not only improves the smoke extraction effect of the desktop range hood, but also reduces the need for users to frequently adjust the position of pots, further improving the user's operating convenience and comfort. Secondly, the rotating component 4 ensures that the smoke extraction component 1 can stay stably at any angle, avoiding loosening problems caused by external forces or long-term use; further, through the seamless connection between the smoke extraction component 1 and the base 3, it is also convenient for users to clean the desktop range hood and avoid pinching their hands.

[0069] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A rotating structure for a desktop range hood, comprising a range hood body (2), characterized in that: The range hood body (2) comprises a smoke extraction component (1), a base (3), and a rotating component (4) connecting the smoke extraction component (1) and the base (3); a sliding surface (31) is provided on a side of the base (3) close to the smoke extraction component (1); the sliding surface (31) has an arc-shaped or spherical cross section; the smoke extraction component (1) is provided with a sliding end (17) that fits the sliding surface (31) and can slide relative to the sliding surface (31); the sliding end (17) is driven by the rotating component (4) to slide along the sliding surface (31), so that the smoke extraction component (1) rotates relative to the base (3).

2. The rotating structure for a desktop range hood according to claim 1, characterized in that: The smoking assembly (1) is provided with a sliding cavity (110) for the base (3) to extend into, the sliding end (17) is provided on the peripheral side of the cavity opening of the sliding cavity (110) and abuts against the sliding surface (31), and the rotation center of the rotating assembly (4) coincides with the center of a cross section of the sliding surface (31).

3. The rotating structure for a desktop range hood according to claim 2, characterized in that: The base (3) is provided with a rotating member installation cavity (32) located on one side of the sliding surface (31); the rotating assembly (4) comprises a first rotating member (41) fixed in the sliding cavity (110), and a second rotating member (42) fixed in the rotating member installation cavity (32); the first rotating member (41) and the second rotating member (42) are rotatably connected.

4. The rotating structure for a desktop range hood according to claim 3, characterized in that: The first rotating member (41) is provided with a first fixing groove (411) located on one side thereof, a rotating member connecting end (412) located on a side opposite to the first fixing groove (411), and first fixing ends (413) respectively located on both sides of the first fixing groove (411); the sliding cavity (110) is provided with a second fixing groove (1101) respectively matched with the first fixing end (413), a second fixing end (1102) matched with the first fixing groove (411), and a connecting member limiting end (1103) connected to the rotating member connecting end (412); the first fixing groove (411) and the second fixing end (1102) are arranged in a T-shape in cross section.

5. The rotating structure for a desktop range hood according to claim 3, characterized in that: The included angle α between the tangent direction of the cross section of the sliding surface (31) and the horizontal plane gradually increases from the side close to the rotating member installation cavity (32) toward the outside, and the variation range of α is 30°-80°.

6. The rotating structure for a desktop range hood according to claim 3, characterized in that: The first rotating member (41) is provided with a first extending end (414) located on a side close to the second rotating member (42), the second rotating member (42) is provided with a second extending end (421) located on a side close to the first rotating member (41), the first extending end (414) is provided with a protruding friction rotating portion (4141), and the second extending end (421) is provided with a friction rotating hole (4211) for the friction rotating portion (4141) to extend into and rotate.

7. The rotating structure for a desktop range hood according to claim 6, characterized in that: The second rotating member (42) is provided with a first limiting end (422) protruding from the second extending end (421), and a second limiting end (423) located at a side away from the first limiting end (422), and the first limiting end (422) and the second limiting end (423) respectively cooperate with the first rotating member (41) to limit the rotation angle of the first rotating member (41).

8. The rotating structure for a desktop range hood according to claim 6, characterized in that: The distance L1 from the central axis of the smoking component (1) to the center of the friction rotating part (4141) is 40-60 mm.

9. The rotating structure for a desktop range hood according to claim 1, characterized in that: The smoking assembly (1) further comprises a filter (19) fixed to the smoking port (111), and an oil collecting channel (120) located at one side of the smoking port (111) and used for collecting oil and water collected by the filter (19). The rotation angle β between the central axis of the smoking assembly (1) and the horizontal plane ranges from 5° to 50°.

10. Desktop range hood, characterized by: It comprises a rotating structure for a desktop range hood according to any one of claims 1-9.

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