Automatic cleaning apparatus for a barbecue grill

Abstract

The application discloses a barbecue grill automatic cleaning device and relates to the technical field of oven cleaning. The device comprises a machine body, two worm drive mechanisms and four cleaning turntable assemblies. The machine body has opposite bottom surfaces. Two of the four cleaning turntable assemblies are arranged on the bottom of the machine body along a first direction, and the other two cleaning turntable assemblies are arranged on the bottom of the machine body along a second direction. The first direction and the second direction are two directions perpendicular to each other. One worm drive mechanism is arranged inside the machine body along the first direction and is used for driving the two cleaning turntable assemblies arranged along the first direction to rotate. The two double-head worm motors arranged in a cross shape are used for driving the four cleaning turntable assemblies, so that large-area cleaning coverage and stable walking support are achieved.

Description

Technical Field

[0001] This application relates to the field of oven cleaning technology, specifically an automatic cleaning device for barbecue grills. Background Technology

[0002] Grill racks easily accumulate food residue and grease during cooking, requiring regular cleaning. Currently, grill cleaning mainly relies on manual scrubbing with hand-held brushes, which is labor-intensive, inefficient, and results in uneven cleaning. To address this, automated cleaning equipment has emerged on the market. For example, patent document CN103501671B discloses an automatic grill cleaning device that uses three motors to drive three horizontally arranged rotating brushes with radially extending bristles. Multiple rotating brushes simultaneously support the machine body and drive its movement, achieving random steering through alternating forward and reverse rotation of the motors.

[0003] However, the above-mentioned automatic grill cleaning device still has the following shortcomings in practical applications: First, the contact area between the rotating brush bristles and the grill is linear or narrow, and the cleaning area of ​​a single rotating brush is small, making the entire cleaning surface small and difficult to fully cover the complex mesh structure of the grill.

[0004] Secondly, each rotating brush needs to be equipped with an independent motor, which increases cost and control complexity. Summary of the Invention

[0005] The purpose of this application is to provide an automatic cleaning device for barbecue grills to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an automatic cleaning device for barbecue grills, comprising a body, two worm gear drive mechanisms, and four cleaning turntable assemblies; the body has opposing bottom surfaces; Of the four cleaning turntable assemblies, two cleaning turntable assemblies are arranged along a first direction at the bottom of the machine body, and the other two cleaning turntable assemblies are arranged along a second direction at the bottom of the machine body. The first direction and the second direction are two directions that are perpendicular to each other. A worm gear drive mechanism is installed inside the body extending along a first direction, the worm gear drive mechanism being used to drive the two cleaning turntable assemblies arranged along the first direction to rotate. Another worm gear drive mechanism is installed inside the body extending in the second direction, and the worm gear drive mechanism is used to drive the two cleaning turntable assemblies arranged in the second direction to rotate. The cleaning turntable assembly has a cleaning section that is lower than the bottom surface of the machine body, and the cleaning section acts on the grill to clean the grill.

[0007] According to one embodiment of the present invention, a cleaning mechanism is included, the cleaning mechanism including a water pump, a water tank and a pipeline mechanism, the water pump and the water tank being installed in the internal cavity of the machine body, the water inlet of the pipeline mechanism being connected to the water outlet of the water pump, the pipeline mechanism having four water outlets, the four water outlets passing through the machine body and extending into the four cleaning turntable assemblies respectively; The cleaning turntable assembly is provided with several drainage channels. The cleaning mechanism is used to transport water from the water tank to the drainage channels of the cleaning turntable assembly. After the water flows out of the drainage channels, it is sprayed onto the grill.

[0008] According to one embodiment of the present invention, the worm drive mechanism includes a shaftless motor, a worm, two driving gears, two transmission shafts, two driven gears, and two locking discs; The two drive shafts are arranged along a first direction and are vertically mounted on the base of the machine body. The bottom end of each drive shaft passes through the base of the machine body, and a driven gear is mounted on each drive shaft. The shaftless motor is located between the two drive shafts. The worm passes through the hollow rotor of the shaftless motor. A driving gear is installed at each end of the worm. The driving gear and the driven gear correspond one-to-one and mesh with each other. Each of the drive shafts is fitted with a locking disc at its bottom end, and each locking disc is fitted with a cleaning turntable assembly at its bottom.

[0009] According to one embodiment of the present invention, the top surface of the locking disc is provided with an annular plate, the interior of the annular plate is formed with a water storage space, and the top surface of the locking disc is provided with a water outlet hole that penetrates the locking disc and the water outlet hole is connected to the water storage space. The cleaning turntable assembly includes a chassis and a cleaning part installed at the bottom of the chassis. The chassis is provided with a plurality of drainage holes, and the water outlet and the drainage holes are connected in communication. The outlet of the pipeline extends into the water storage space.

[0010] According to one embodiment of the present invention, the locking disc and the cleaning turntable assembly are quickly connected by a magnetic component.

[0011] According to one embodiment of the present invention, the magnetic component includes an iron block and a magnet block. The iron block is provided in an iron block mounting groove at the bottom of the locking disc. The iron block is embedded and fixed in the iron block mounting groove, and the bottom surface of the iron block is lower than the bottom surface of the locking disc. The top surface of the chassis is provided with a groove, the magnet is disposed in the groove, and the bottom of the iron block extends into the groove and is attracted to the magnet.

[0012] According to one embodiment of the present invention, the bottom of the locking disc is provided with a plurality of positioning pins, and the chassis is provided with positioning holes corresponding to the positioning pins one by one, and the positioning pins are embedded in the corresponding positioning holes.

[0013] According to one embodiment of the present invention, the top surface of the chassis is provided with two symmetrically arranged arc-shaped plates, and two anti-rotation grooves are formed between the ends of the two arc-shaped plates. The circumferential surface of the locking disc is provided with two anti-rotation blocks that are adapted to the anti-rotation grooves, and the anti-rotation blocks are embedded in the anti-rotation grooves.

[0014] According to one embodiment of the present invention, the cleaning unit includes a plurality of brush bristles disposed at the bottom of the chassis.

[0015] According to one embodiment of the present invention, the cleaning part includes a sponge, an aramid fabric, and Velcro, wherein the sponge is located between the top surface of the aramid fabric and the bottom surface of the chassis, and the aramid fabric is fixed to the bottom surface of the chassis by the Velcro.

[0016] Compared with the prior art, the beneficial effects of this application are: Compared to existing technologies, this automatic barbecue grill cleaning device has at least the following advantages: First, four cleaning disc assemblies are used, each with a cleaning section. Compared to the linear or narrow strip contact surface of rotating brushes in existing technologies, the cleaning area of ​​four cleaning discs is larger. Furthermore, the four discs are arranged in a cross shape, resulting in a wider overlapping coverage area and effectively reducing cleaning dead spots.

[0017] Secondly, this device only requires two worm gear drive mechanisms to drive four cleaning turntable components, while existing technologies require three motors. The reduction in the number of motors directly reduces manufacturing costs. At the same time, the control logic is also simpler. Walking and steering can be achieved by controlling the speed and direction of two motors separately, without the need for complex coordination of multiple motors.

[0018] In addition, the four cleaning disc components are arranged in two mutually perpendicular directions at the bottom of the machine body, forming a four-point support structure with evenly distributed support points. Compared with the radial arrangement of three rotating brushes in the prior art, this device is more stable and less prone to shaking when moving, and is especially suitable for stable movement on uneven surfaces such as grill grids. Attached Figure Description

[0019] Figure 1 This is a first-view view of the automatic cleaning device for barbecue grills according to this application. Figure 2This is a second-view diagram of the automatic cleaning device for barbecue grills according to this application. Figure 3 This is a schematic diagram of the automatic barbecue grill cleaning device of this application after the top cover has been removed; Figure 4 This is a structural diagram of the automatic barbecue grill cleaning device of this application after removing the top cover and battery pack; Figure 5 This is an assembly diagram of the drive shaft, locking disc, first cleaning turntable assembly, and transmission box of this application; Figure 6 for Figure 5 A sectional view; Figure 7 This is a structural diagram of the locking disc, drive shaft, first bearing, second bearing, and first type of cleaning turntable assembly of this application; Figure 8 for Figure 7 A sectional view; Figure 9 This is a structural diagram of the locking disc and the second cleaning turntable assembly of this application.

[0020] In the diagram: 1. Body; 101. Base; 102. Top cover; 2. First cleaning turntable; 211. Chassis; 212. Arc plate; 213. Brush bristles; 214. Magnet block; 215. Anti-rotation groove; 216. Positioning hole; 217. Drain hole; 218. Sponge; 219. Aramid cloth; 3. Second cleaning turntable; 4. First shaftless motor; 5. Second shaftless motor; 6. First worm gear; 7. Second worm gear; 8. Water pump; 9. Water tank; 901. Plug; 10. Battery pack; 11. Transmission box; 12. Locking disc; 121. Disc body; 122. Ring plate; 123. Water outlet; 124. Positioning post; 125. Anti-rotation block; 13. Transmission shaft; 131. Threaded hole; 14. Iron block; 141. Countersunk hole; 15. First bearing; 16. Driven gear; 17. Second bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that in the description of this application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0025] This application provides a technical solution: This application provides an automatic cleaning device for barbecue grills, including a body 1, two worm gear drive mechanisms and four cleaning turntable assemblies; the body 1 has opposing bottom surfaces; Of the four cleaning turntable assemblies, two cleaning turntable assemblies are arranged along the first direction at the bottom of the body 1, and the other two cleaning turntable assemblies are arranged along the second direction at the bottom of the body 1. The first direction and the second direction are two directions that are perpendicular to each other. A worm gear drive mechanism is installed inside the body 1 extending along a first direction. The worm gear drive mechanism is used to drive the two cleaning turntable assemblies arranged along the first direction to rotate. Another worm gear drive mechanism is installed inside the body 1 extending in the second direction. This worm gear drive mechanism is used to drive the two cleaning turntable assemblies arranged in the second direction to rotate. The cleaning turntable assembly has a cleaning section that is lower than the bottom surface of the body 1. The cleaning section acts on the grill to clean the grill.

[0026] In this embodiment, when the automatic cleaning device for the barbecue grill is in operation, the two worm gear drive mechanisms are powered on and run. The worm gear drive mechanism extending in the first direction drives the two cleaning turntable assemblies arranged in the same direction to rotate synchronously around their own axis. The worm gear drive mechanism extending in the second direction drives the two cleaning turntable assemblies arranged in another direction to rotate synchronously around their own axis. The four cleaning turntable assemblies rotate simultaneously, and their bottom cleaning parts (lower than the bottom surface of the machine body 1) directly contact the surface of the grill, wiping and cleaning the grill through rotational friction.

[0027] Since the four cleaning turntable components are arranged vertically in a cross shape and all are in contact with the surface of the grill, they together support the entire machine body 1. By controlling the speed and direction of the two worm gear drive mechanisms, the equipment can move automatically on the surface of the grill (in coordination with the oven lid), while the cleaning turntables continue to rotate to complete the cleaning of the grill.

[0028] It is evident that this automatic barbecue grill cleaning device has at least the following advantages compared to existing technologies: First, four cleaning disc assemblies are used, each with a cleaning section. Compared to the linear or narrow strip contact surface of rotating brushes in existing technologies, the cleaning area of ​​four cleaning discs is larger. Furthermore, the four discs are arranged in a cross shape, resulting in a wider overlapping coverage area and effectively reducing cleaning dead spots.

[0029] Secondly, this device only requires two worm gear drive mechanisms to drive four cleaning turntable components, while existing technologies require three motors. The reduction in the number of motors directly reduces manufacturing costs. At the same time, the control logic is also simpler. Walking and steering can be achieved by controlling the speed and direction of two motors separately, without the need for complex coordination of multiple motors.

[0030] In addition, the four cleaning disc assemblies are arranged in two mutually perpendicular directions at the bottom of the body 1, forming a four-point support structure with evenly distributed support points. Compared to the radial arrangement of three rotating brushes in existing technology, this device is more stable and less prone to shaking when moving, making it especially suitable for stable movement on uneven surfaces such as grill grids.

[0031] Furthermore, the two worm gear drive mechanisms are arranged in a cross shape, resulting in good torque transmission and force stability. The force is symmetrical, preventing tipping or deviation, and the rotation is smooth. As an equivalent alternative, the two worm gear drive mechanisms can also be arranged horizontally in parallel to achieve forward and backward movement and differential steering, but the movement flexibility and coverage integrity are somewhat reduced compared to the cross arrangement.

[0032] In this embodiment, the body 1 is the basic load-bearing structure of the entire device, used to accommodate and install various functional components. The body 1 includes a base 101 and a top cover 102 disposed on the base 101. The space between the top cover 102 and the base 101 forms the internal cavity of the body 1, and the bottom surface of the base 101 is the bottom surface of the body 1.

[0033] In this embodiment, the four cleaning turntable assemblies are components that directly contact the grill and perform the cleaning action. Specifically, the four cleaning turntable assemblies include two first cleaning turntables 2 and two second cleaning turntables 3. The two first cleaning turntables 2 are arranged along a first direction at the bottom of the body 1, and the two second cleaning turntables 3 are arranged along a second direction at the bottom of the body 1. The first direction and the second direction are two perpendicular directions. That is to say, the two first cleaning turntables 2 and the two second cleaning turntables 3 are arranged in a cross shape or an "X" shape at the bottom of the body 1.

[0034] This cross-shaped arrangement creates a four-point support structure at the bottom of the body 1, with the four support points evenly distributed at the four corners of the bottom. When the device is placed on the grill, the two first cleaning discs 2 and the two second cleaning discs 3 simultaneously contact the grill surface, forming a stable support surface that prevents the device from shaking during movement. Furthermore, both the first cleaning discs 2 and the two second cleaning discs 3 are lower than the bottom surface of the body 1, allowing the cleaning unit to directly contact and wipe the grill surface. The bottom surface of the body 1 maintains a certain gap with the grill surface to prevent interference between the body 1 and the grill.

[0035] In this embodiment, the worm gear drive mechanism is the power unit that drives the cleaning turntable assembly to rotate. One worm gear drive mechanism is installed inside the cavity of the body 1 along a first direction, and is used to drive the two cleaning turntable assemblies arranged along the first direction to rotate. The other worm gear drive mechanism is installed inside the body 1 along a second direction, and is used to drive the two cleaning turntable assemblies arranged along the second direction to rotate. That is, the two worm gear drive mechanisms are arranged in a cross shape inside the body 1, perpendicular to each other and without interference. The worm gear drive mechanism transmits the rotational motion of the motor to the cleaning turntable assembly, causing the cleaning turntable assembly to rotate around its own axis. Since the same worm gear drive mechanism drives two cleaning turntable assemblies simultaneously, the rotational speed of the two cleaning turntable assemblies is exactly the same, ensuring the synchronization of the two cleaning turntable assemblies on the same side.

[0036] In this embodiment, a cleaning mechanism is also included. The cleaning mechanism includes a water pump 8, a water tank 9, and a piping system. The water pump 8 and the water tank 9 are installed inside the machine cavity of the body 1. The water inlet of the piping system is connected to the water outlet of the water pump 8. The piping system has four water outlets, each corresponding to one of the four cleaning disc assemblies. The four water outlets pass through the body 1 and extend into the four cleaning disc assemblies. The cleaning turntable assembly has several drainage channels. The cleaning mechanism delivers water from the water tank 9 to these drainage channels, and the water flows out and is sprayed onto the grill. Thus, while the cleaning turntable assembly wipes the grill, the water pump 8 in the cleaning mechanism draws water from the water tank 9 and distributes it through piping to the four cleaning turntable assemblies. Finally, the water flows out from the drainage channels of the four cleaning turntable assemblies onto the grill, achieving the wet wiping function.

[0037] The specific structure of the worm drive mechanism is described in detail below. Taking a worm drive mechanism extending along the first direction as an example, the worm drive mechanism includes a first shaftless motor 4, a first worm 6, two driving gears (not shown in the figure), two drive shafts 13, two driven gears 16, and two locking discs 12. The two drive shafts 13 are arranged along the first direction and are vertically mounted on the base 101 of the machine body 1. The bottom end of the drive shaft 13 passes through the base 101 of the machine body 1 and extends below the base 101. A driven gear 16 is mounted on the top of each drive shaft 13, and a locking disc 12 is mounted on the bottom of each drive shaft 13. The driven gears 16 are fixedly sleeved on the drive shafts 13 and rotate synchronously with them. The first shaftless motor 4 is located between the two drive shafts 13. The first shaftless motor 4 has a hollow rotor, and the first worm 6 passes through the hollow rotor of the first shaftless motor 4. In other words, the first worm gear 6 is fixedly connected to the hollow rotor of the first shaftless motor 4. When the first shaftless motor 4 is powered on, the hollow rotor drives the first worm gear 6 to rotate synchronously.

[0038] Furthermore, both ends of the first worm gear 6 extend to both sides of the first shaftless motor 4, and a driving gear is installed at each end of the first worm gear 6. The driving gear and the driven gear 16 correspond one-to-one and mesh with each other. In this way, when the first shaftless motor 4 drives the first worm gear 6 to rotate, the first worm gear 6 drives the driving gears at both ends to rotate synchronously. The driving gears then drive the driven gears 16 they mesh with to rotate. The driven gears 16 drive the transmission shaft 13 to rotate. The transmission shaft 13 then drives the locking disc 12 to rotate. Finally, the locking disc 12 drives the cleaning turntable assembly mounted on the locking disc 12 to rotate.

[0039] Similarly, the worm drive mechanism extending along the second direction includes a second shaftless motor 5, a second worm 7, two driving gears, two drive shafts 13, two driven gears 16, and two locking discs 12. Its structure and working principle are exactly the same as the worm drive mechanism extending along the first direction, only the arrangement direction is different. The second worm 7 passes through the hollow rotor of the second shaftless motor 5. A driving gear is provided at each end of the second worm 7, and a driven gear 16 is mounted on the top of each of the two drive shafts 13. As the second shaftless motor 5 operates, it drives the second worm 7 to rotate, thereby driving the two drive shafts 13 arranged along the second direction to rotate, and further driving the two cleaning turntable assemblies arranged along the second direction to rotate.

[0040] In this embodiment, the driving gear and the driven gear 16 are a set of bevel gears that cooperate with each other.

[0041] It should be noted that the second shaftless motor 5 and the first shaftless motor 4 can be controlled independently, meaning their speed and direction of rotation can be controlled separately. By independently controlling the speed and direction of rotation of the two motors, differential steering of the device can be achieved. For example, when the speed of the first shaftless motor 4 is greater than that of the second shaftless motor 5, the device will steer towards the slower motor. Similarly, when the rotation directions of the first shaftless motor 4 and the second shaftless motor 5 are opposite, the device can rotate around its own center. Furthermore, when the rotation directions of the first shaftless motor 4 and the second shaftless motor 5 change randomly, the device can move randomly along the grill, thus covering the entire area of ​​the grill.

[0042] In some embodiments, such as Figure 3 and Figure 4 As shown, a transmission box 11 is installed at each of the four top corners of the base 101. The aforementioned driving gear and driven gear 16 are both installed inside the transmission box 11. The aforementioned transmission shaft 13 corresponds one-to-one with the four transmission boxes 11, and the top end of the transmission shaft 13 extends into the transmission box 11. The transmission boxes 11 protect the internal driving gear and driven gear 16.

[0043] In some embodiments, a first bearing 15 and a second bearing 17 are sequentially installed inside the transmission housing 11 from high to low. The first bearing 15 and the second bearing 17 are coaxially arranged, and the transmission shaft 13 is connected to both the first bearing 15 and the second bearing 17. This ensures the stability and coaxiality of the transmission shaft 13 during rotation. The bottom end of the transmission shaft 13 passes through the base 101 and extends below the base 101. It should be noted that an end cap or a limiting structure may be provided at the top end of the transmission shaft 13 to prevent the transmission shaft 13 from dislodging from the bearing.

[0044] Optionally, in some embodiments, the two cleaning turntable assemblies arranged along the first direction are eccentrically set relative to the central axis of the corresponding drive shaft 13, with an eccentricity of 3mm-6mm. Similarly, the two cleaning turntable assemblies arranged along the second direction are also eccentrically set, so that during the synchronous rotation of the two cleaning turntable assemblies driven by the same worm gear drive mechanism, the contact point between the cleaning part and the grill continuously produces periodic left and right offsets, thereby causing the whole machine to naturally form a small sway during movement, effectively shortening the time for full coverage, thus improving the uniformity of walking coverage and turning flexibility.

[0045] Optionally, in the same worm drive mechanism, the two driving gears installed at both ends of the worm have different numbers of teeth or transmission ratios, so that the corresponding two driven gears 16 rotate at different speeds, thus creating a speed difference; similarly, the other worm drive mechanism can also be configured in the same way. In this way, while the two cleaning turntable assemblies rotate synchronously, one fast and one slow, the machine body 1 can continuously generate slow turning motion without frequently switching the motor's forward and reverse directions. The walking trajectory is an irregular wave curve, which avoids the equipment staying in the same area for a long time, significantly improving the cleaning coverage and path randomness.

[0046] In some embodiments, such as Figure 6 , Figure 7 and Figure 8 As shown, the locking disc 12 includes a disc body 121 and an annular plate 122. The disc body 121 is generally disc-shaped, and the annular plate 122 is disposed on the top surface of the disc body 121. The annular plate 122 is circular and protrudes upward from the top surface of the disc body 121. A water storage space is formed inside the annular plate 122 for temporarily storing cleaning water. The top surface of the disc body 121 is also provided with a water outlet 123 that penetrates the disc body 121 and is connected to the water storage space. That is, water in the water storage space can flow to the bottom of the disc body 121 through the water outlet 123. Multiple water outlets 123 can be provided, for example, multiple water outlets 123 can be evenly arranged along the circumference of the disc body 121 so that water can flow evenly to all parts of the cleaning turntable assembly.

[0047] In some embodiments, the cleaning turntable assembly includes a base 211 and a cleaning section mounted on the bottom of the base 211. The base 211 is generally disc-shaped and has a plurality of drain holes 217. The water outlet 123 and the drain holes 217 are connected. In this way, water in the water storage space can flow through the water outlet 123 to the bottom of the turntable 121, thereby entering the drain holes 217 on the base 211, and finally being discharged from the drain holes 217 to flow out onto the grill rack.

[0048] In some embodiments, the locking disc 12 and the cleaning turntable assembly are quickly connected via a magnetic component. Specifically, such as... Figure 6 and Figure 8As shown, the magnetic assembly includes an iron block 14 and a magnet block 214. A circular mounting hole is provided at the top center of the disk body 121, and the bottom end of the drive shaft 13 is inserted into the mounting hole. The bottom surface of the locking disc 12 is provided with an iron block mounting groove, which is a circular groove. The iron block 14 is embedded in the iron block mounting groove, and the top of the iron block 14 is in the shape of a ring. The ring part is also inserted into the mounting hole of the disc body 121. The bottom end of the drive shaft 13 is inserted into the ring part at the top of the iron block 14. The bottom surface of the iron block 14 is lower than the bottom surface of the locking disc 12. That is to say, the iron block 14 protrudes downward from the bottom of the locking disc 12. The top surface of the base 211 is provided with a groove, and the magnet block 214 is placed in the groove.

[0049] In addition, a threaded hole 131 is provided on the bottom surface of the drive shaft 13, and a countersunk hole 141 is provided at the center of the iron block 14. The countersunk hole 141 is connected to the threaded hole 131 mentioned above.

[0050] Thus, when assembling the locking disc 12, the iron block 14, and the drive shaft 13, simply move the iron block 14 from the bottom of the locking disc 12 upwards, so that the top annular part of the iron block 14 extends into the circular mounting hole of the locking disc 12. At the same time, the circumferential surface of the iron block 14 is embedded into the iron block mounting groove at the bottom of the locking disc 12. Then, align the locking disc 12 with the drive shaft 13 from below, and move the locking disc 12 upwards so that the bottom end of the drive shaft 13 is inserted into the top annular part of the iron block 14. Finally, insert a countersunk bolt into the countersunk hole 141 of the iron block 14 and tighten the countersunk bolt until the countersunk bolt is threadedly connected to the threaded hole 131 of the drive shaft 13, and the bolt head of the countersunk bolt is fully inserted into the countersunk hole 141 of the iron block 14.

[0051] When assembling the cleaning turntable assembly and the locking plate 12, simply attach the top surface of the base 211 to the bottom surface of the locking plate 12 so that the bottom surface of the iron block 14 extends into the groove of the base 211. The magnetic attraction between the magnet block 214 and the iron block 14 will keep the cleaning turntable assembly tightly attached to the bottom of the locking plate 12, preventing the cleaning turntable assembly from falling off during rotation.

[0052] Since the locking disc 12, the iron block 14 and the drive shaft 13 are assembled together using only one countersunk bolt, installation and disassembly are very convenient, greatly facilitating the replacement of the iron block 14.

[0053] In some embodiments, the iron block 14 may be made of a material with good magnetic permeability, such as pure iron or low-carbon steel.

[0054] In some embodiments, the magnet block 214 may be a high-temperature resistant ferrite magnet, which is not easily demagnetized in high-temperature environments and is suitable for use in grill cleaning equipment.

[0055] To prevent relative rotation between the cleaning turntable assembly and the locking disc 12, the bottom of the locking disc 12 is provided with multiple positioning pins 124, and the base 211 has positioning holes 216 corresponding to each positioning pin 124. The positioning pins 124 can be cylindrical or prismatic, and they protrude downwards from the bottom of the locking disc 12. The positioning holes 216 are located on the top surface of the base 211, and their shape and size match the positioning pins 124. When the locking disc 12 is assembled with the cleaning turntable assembly, the positioning pins 124 are embedded in their corresponding positioning holes 216. The fit between the positioning pins 124 and the positioning holes 216 can withstand horizontal rotational torque, ensuring that the locking disc 12 and the cleaning turntable assembly do not slip relative to each other during rotation.

[0056] In some embodiments, three positioning posts 124 may be provided, and the three positioning posts 124 are evenly distributed in the circumferential direction, which can provide a balanced torque transmission capability.

[0057] Furthermore, to further prevent relative rotation between the cleaning turntable assembly and the locking disc 12, and to achieve foolproof assembly, an anti-rotation structure is also provided between the locking disc 12 and the cleaning turntable assembly. For example... Figure 7 and Figure 8 As shown, the top surface of the chassis 211 is provided with two symmetrically arranged arc-shaped plates 212, and two anti-rotation grooves 215 are formed between the ends of the two arc-shaped plates 212. The two anti-rotation grooves 215 are located at both ends of the chassis 211 in the diametrical direction, and the circumferential surface of the locking disc 12 is provided with two anti-rotation blocks 125 that are adapted to the anti-rotation grooves 215. The anti-rotation blocks 125 protrude outward from the circumferential surface of the locking disc 12. When the locking disc 12 is assembled with the cleaning disc assembly, the anti-rotation blocks 125 are embedded in the anti-rotation grooves 215, and the cooperation between the anti-rotation blocks 125 and the anti-rotation grooves 215 can withstand circumferential rotational forces. In addition, the sides of the anti-rotation blocks 125 and the anti-rotation grooves 215 abut against each other, jointly bearing and transmitting the horizontal circumferential force generated by the rotation of the disc, thereby improving the stability of torque transmission and rotational reliability.

[0058] As can be seen, in this embodiment, firstly, the magnetic attraction between the magnet 214 and the iron block 14 achieves axial positioning of the locking disc 12 and the chassis 211, preventing the cleaning turntable assembly from falling off; secondly, the cooperation between the positioning pin 124 and the positioning hole 216 achieves circumferential positioning, transmitting rotational torque; thirdly, the cooperation between the anti-rotation block 125 and the anti-rotation groove 215 further transmits torque and achieves foolproof assembly. This multi-positioning structure ensures the reliability of the connection and allows users to quickly replace the cleaning turntable assembly without the need for any tools.

[0059] In some embodiments, the chassis 211 is further provided with a plurality of drainage holes 217, which penetrate the upper and lower surfaces of the chassis 211 and are used to guide water from the top of the chassis 211 to the bottom of the chassis 211. A plurality of drainage holes 217 can be evenly arranged along the circumference of the chassis 211 to ensure that water can be evenly distributed on the cleaning part at the bottom of the chassis 211.

[0060] It should be noted that the cleaning unit can take two forms. The first form is the brush part 213, such as... Figure 6 and Figure 8 As shown, the brush bristle 213 is a brush bristle located at the bottom of the chassis 211. The brush bristles can be made of PA612 material. PA612 is a high-temperature resistant nylon material with high strength, high toughness, and high temperature resistance. It will not shed or deform under high temperature conditions, and has moderate hardness. It can remove the burnt residue from the surface of the grill without scratching the coating.

[0061] Specifically, the bristle component 213 is directly implanted into the bottom of the chassis 211 through a bristle implantation process, or it can be made into a separate component and then fixed to the bottom of the chassis 211 by Velcro or clips. Multiple bristles form a bristle array on the bottom of the chassis 211. When the chassis 211 rotates, the bristles wipe the surface of the grill to remove food residue and burnt food.

[0062] The second type is a combination of sponge 218 and aramid fabric 219, such as Figure 9 As shown, the cleaning unit includes a sponge 218, an aramid fabric 219, and Velcro. The sponge 218 is located between the top surface of the aramid fabric 219 and the bottom surface of the base 211, with the aramid fabric 219 fixed to the bottom surface of the base 211 via Velcro. Specifically, the hook side of the Velcro can be attached to the bottom surface of the base 211, and the loop side of the Velcro can be attached to the top surface of the aramid fabric 219, allowing the aramid fabric 219 to easily adhere to the bottom of the base 211. The sponge 218, sandwiched between the base 211 and the aramid fabric 219, is soft and absorbent, capable of storing a certain amount of moisture and slowly releasing it during wiping. The aramid fabric 219 is a high-performance synthetic fiber fabric with excellent abrasion resistance, high-temperature resistance, and chemical corrosion resistance, while also being soft enough not to scratch the enamel or non-stick coating of the grill.

[0063] When this type of cleaning unit is used, water flows out from the drain hole 217, is absorbed by the sponge 218, and then evenly applied to the grill surface through the aramid cloth 219, while simultaneously wiping the grill surface. Furthermore, because the sponge 218 has a cushioning effect, the contact pressure between the aramid cloth 219 and the grill is relatively uniform, preventing damage to the grill.

[0064] Users can choose to use either the brush bristles 213 or a combination of sponge 218 and aramid cloth 219 based on their cleaning needs. For example, during dry or coarse cleaning, brush bristles 213 can be used to remove large dirt particles and burnt residue using the rigidity of the bristles. During wet or fine cleaning, a combination of sponge 218 and aramid cloth 219 can be used, utilizing the softness of the aramid cloth 219 and the water-retaining properties of the sponge 218 for fine cleaning. Importantly, due to the quick-release structure between the cleaning disc assembly and the locking disc 12, users can easily replace different cleaning disc assemblies to suit the needs of different cleaning stages.

[0065] In some embodiments, such as Figure 6 As shown, the brush part 213 located at the bottom of the chassis 211 is in a vertical position.

[0066] It should be noted that, considering that the vertical bristles are perpendicular to the grill grid, the movement resistance is relatively high, which may cause jamming or jerking during cleaning. In addition, it is difficult to reach the dirt remaining on the side wall and at the root of the gaps of the grill.

[0067] To address the aforementioned issues, this embodiment features targeted optimizations to the bristle arrangement and structural form of the cleaning turntable assembly. Specifically, the bristle components 213 located at the bottom of the chassis 211 are not installed vertically perpendicular to the grille surface, as is the traditional method. Instead, each clump of bristles is inserted at an angle relative to the radial direction of the chassis 211, creating an angle of approximately 20° to 25° between the free end of the bristles and the direction of the grille. This angle was determined through extensive field testing: if the angle is too small, the contact between the bristles and the grille tends to be parallel, weakening the scraping effect and hindering the removal of stubborn, burnt-on grime; if the angle is too large, it approaches a vertical position, resulting in poor movement. The 20° to 25° angled arrangement of the brush bristles creates a combined force of normal pressure and tangential thrust as the turntable rotates. This ensures sufficient wiping pressure while significantly reducing the risk of the bristle tips getting stuck in the mesh. Consequently, the frictional resistance of the machine when moving on the grill surface is greatly reduced, the smoothness of movement is significantly improved, and the walking trajectory is more stable and smooth. This effectively avoids momentary stagnation or deviation caused by excessive bristle embedding in the mesh.

[0068] More importantly, each clump of bristles is not designed with equal length. Instead, the bristles at the center of the clump are elongated, creating a height difference between the central long bristles and the surrounding short bristles. When the turntable rotates, the shorter peripheral bristles primarily contact the top surface of the grille, performing a large-area wiping action. Meanwhile, the longer, protruding bristles in the center naturally embed themselves into the gaps between the grille bars during rotation. Utilizing their greater bending deformation and resilience, they directly scrape and sweep away food residue and tar film deposited on the inner walls and roots of these gaps, effectively removing previously inaccessible, hidden residues. This coordinated effort between the peripheral bristles and the central long bristles ensures both broad surface cleaning and deep cleaning within the gaps, resulting in a significant improvement in the overall cleanliness of the grill. In summary, by adjusting the bristle planting direction to a 20° to 25° angle with the grid, and combining it with the structure of long central bristles protruding from the surrounding short bristles in each cluster, the cleaning turntable of this application can achieve thorough cleaning without dead angles while ensuring smooth movement, significantly improving the adaptability and cleaning thoroughness of the automatic grill cleaning equipment to the grid-like surface to be cleaned.

[0069] In some embodiments, the water tank 9 has a stopper 901 located outside the top cover 102, allowing the user to add water to the water tank 9. Additionally, the piping system may include a main water pipe and four branch water pipes. The main water pipe is connected to the outlet of the water pump 8, and one end of each of the four branch water pipes is connected to the main water pipe, while the other end extends into the water storage space of each of the four locking discs 12. The branch water pipes may be flexible hoses.

[0070] In this embodiment, the water pump 8 draws water from the water tank 9 and delivers it to the water storage space of the locking plate 12 through the pipeline mechanism. Under the action of gravity or water pressure, the water in the water storage space flows out through the water outlet 123 on the locking plate 12. The outflowing water enters the area above the base 211 of the cleaning turntable assembly and then flows to the area below the base 211 through the drain hole 217 on the base 211. In this way, while the cleaning turntable assembly rotates and wipes, water is evenly sprayed onto the surface of the grill, which softens the burnt grime and dissolves the oil stains.

[0071] In this embodiment, the operation of the water pump 8 is controlled by a control unit. The control unit can use an MCU (microcontroller unit) as the main control chip. The MCU can output control signals to the water pump 8 drive module, thereby controlling the start and stop of the water pump 8 and its working time. The control unit can also control the intermittent working mode of the water pump 8, for example, working for 5 seconds and stopping for 10 seconds, to save water and avoid over-wetting. In the dry and wet segmented mixed wiping mode, the control unit can control the water pump 8 to not work for the first half of the time (pure dry wiping) and to work intermittently for the second half of the time (automatic water spraying).

[0072] The control unit also controls the operation of the first shaftless motor 4 and the second shaftless motor 5. The control unit includes an MCU, a motor drive module, a timing button, and a mode button. The MCU is electrically connected to the first shaftless motor 4 and the second shaftless motor 5 through the motor drive module, and can independently control the speed and direction of rotation of the two motors. Furthermore, the MCU can randomly output two PWM signals to control the operating speed of the first shaftless motor 4 and the second shaftless motor 5 respectively. By randomly adjusting the speed difference between the two motors, differential steering can be achieved. For example, when the speed of the first shaftless motor 4 is greater than the speed of the second shaftless motor 5, the device will deflect in the direction of the second shaftless motor 5. The MCU can also randomly switch the forward and reverse directions of one or both motors to achieve sudden changes in direction. These two control methods can alternate randomly, forming an irregular walking path to ensure that the entire area of ​​the grill is covered within the timed period.

[0073] In addition, the control unit also supports a timer function. Users can select the cleaning time via the timer button, such as 10 minutes, 20 minutes, or 30 minutes. When the timer expires, the MCU automatically cuts off the power to the motor and water pump 8, and the entire machine stops running. This way, users do not need to supervise the equipment, as it will automatically stop after the set time.

[0074] The control unit also supports mode selection, allowing users to choose different cleaning modes via mode buttons, including pure dry wiping mode, pure wet wiping mode, and a mixed dry and wet wiping mode. In pure dry wiping mode, the water pump 8 remains inactive, and the device uses brush 213 for dry wiping. This mode is suitable for light stains or when the user does not wish to keep the grill wet. In pure wet wiping mode, the water pump 8 operates intermittently, and the device uses a combination of sponge 218 and aramid cloth 219 for wet wiping. This mode is suitable for stubborn stains that require softening and dissolving. In the mixed dry and wet wiping mode, the device cleans in preset segments: the first half is for pure dry wiping, using brush 213 for coarse wiping to remove large particles and burnt residue; the second half automatically sprays water intermittently, using a combination of sponge 218 and aramid cloth 219 for wet wiping, utilizing the residual heat of the grill to soften stains and further enhance cleanliness. This mixed wiping mode fully leverages the advantages of both dry and wet wiping to achieve optimal cleaning results.

[0075] The automatic cleaning device for this barbecue grill also includes a battery pack 10 to provide power to various electrical components. The battery pack 10 can be a rechargeable lithium battery or a rechargeable nickel-metal hydride battery, featuring high energy density and cycle life. The battery pack 10 is installed inside the cavity of the main body 1 and is electrically connected to the control unit, water pump 8, first shaftless motor 4, and second shaftless motor 5. A charging interface can be provided on the main body 1 to charge the battery pack 10 via an external power source. A power indicator light can also be installed on the top surface of the main body 1 to display the remaining power of the battery pack 10.

[0076] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the cleaning sections of the four cleaning turntable assemblies all protrude from the outer contour of the body 1, forming an outwardly convex arrangement. That is, from a top view, the edge of the chassis 211 extends beyond the periphery of the body 1. When the equipment moves on the grill, if the body 1 collides with the inside of the oven hood, due to the outwardly convex structure of the cleaning turntable assemblies, the cleaning turntable assemblies will preferentially contact the obstacle. After receiving the impact force, the cleaning turntable assemblies will transmit this force to the body 1, causing the entire machine to automatically retract.

[0077] Optionally, the control unit can detect sudden changes in motor current through sensors or detect collisions through collision sensors, thereby controlling the motor to change its rotation direction to achieve steering avoidance, which can make walking smoother.

[0078] The following describes the working process of this automatic barbecue grill cleaning device: Users should first select the appropriate cleaning part according to their needs. If there is a lot of burnt grime and food residue on the grill, brush part 213 can be used; if the grill is already relatively clean or the user wants to perform a fine wipe, a combination of sponge 218 and aramid cloth 219 can be used.

[0079] Afterwards, the user installs the selected cleaning turntable assembly onto the locking disc 12, achieving quick assembly through magnetic positioning and an anti-rotation structure.

[0080] Next, the user adds an appropriate amount of cleaning water to the water tank 9, which can be ordinary tap water. Finally, tighten the plug 901 to prevent leakage.

[0081] The user then places the device on the grill and closes the oven hood, while the cleaning sections of the four cleaning turntables of the cleaning machine come into contact with the grill surface.

[0082] Next, the user selects the cleaning time using the timer button; for example, pressing the timer button once selects 10 minutes, pressing it twice selects 20 minutes, and pressing it three times selects 30 minutes. The user then selects the cleaning mode using the mode button; for example, pressing it once selects a purely dry cleaning mode, pressing it twice selects a purely wet cleaning mode, and pressing it three times selects a mixed dry and wet cleaning mode. After pressing the button, the control unit confirms the user's selection via an indicator light or a buzzer.

[0083] Next, the user presses the start button, and the device starts working. The MCU of the control unit controls the operation of the first shaftless motor 4, the second shaftless motor 5, and the water pump 8 according to the cleaning mode selected by the user.

[0084] In pure dry wiping mode, the MCU controls the water pump 8 to not operate, and no water is sprayed. The MCU outputs two PWM signals to control the first shaftless motor 4 and the second shaftless motor 5 to rotate at a certain speed. The MCU adjusts the speed difference between the two motors according to the set program and randomly switches the forward and reverse directions of one or both motors, causing the equipment to move randomly on the grill. The first shaftless motor 4 drives the first worm gear 6 to rotate, which in turn drives the driving gear 16 to rotate. The driven gear 16 drives the transmission shaft 13 to rotate, which in turn drives the locking disc 12 to rotate. The locking disc 12 then drives the cleaning turntable assembly to rotate. Similarly, the second shaftless motor 5 drives the second worm gear 7 to rotate, which in turn drives the two cleaning turntable assemblies arranged along the second direction to rotate. All four cleaning turntable assemblies rotate simultaneously, and the brush bristles 213 at their bottom wipe the surface of the grill, removing large particles of dirt and burnt residue. During random movement, if the equipment collides with the edge of the grill, the cleaning turntable assembly, protruding from the body 1, will first contact the edge and be subjected to the impact force, causing the entire machine to automatically retract. After the designated time has elapsed, the MCU cuts off the power to the first shaftless motor 4 and the second shaftless motor 5, and the equipment stops operating.

[0085] In pure wet wiping mode, the MCU controls the water pump 8 to work intermittently, for example, working for 5 seconds and stopping for 10 seconds. The water pump 8 draws water from the water tank 9 and delivers it through the piping mechanism to the water storage spaces of the four locking discs 12. Water flows out of the storage spaces through the outlet holes 123, then through the drain holes 217 on the chassis 211, flowing below the chassis 211 and being absorbed by the sponge 218. After absorbing the water, the sponge 218, during rotation, evenly spreads the water onto the grill surface through the aramid cloth 219. Simultaneously, the aramid cloth 219 wipes the grill surface, using the softening effect of the water to remove stains. The MCU also controls the first shaftless motor 4 and the second shaftless motor 5 to move randomly, ensuring the equipment covers the entire area of ​​the grill. The equipment stops operating after the set time.

[0086] In the dry-wet segmented cleaning mode, the MCU controls the equipment according to preset segmented time intervals. Assuming the total time interval is T, during the first T / 2 time interval, the MCU controls the water pump 8 to remain inactive, and the equipment performs pure dry cleaning, using brush bristles 213 for coarse cleaning to remove large particles and charred residue. During the latter T / 2 time interval (after the cleaning section with sponge 218 and aramid cloth 219 has been replaced), the MCU controls the water pump 8 to operate intermittently, and the equipment performs wet cleaning, using a combination of sponge 218 and aramid cloth 219 for fine cleaning. Throughout the cleaning process, the MCU controls two motors to move randomly to ensure full coverage. Once the time interval is reached, the equipment stops operating.

[0087] It should be noted that when it is necessary to change to a different cleaning unit, the user can remove the machine from the rack after the machine has stopped, replace the new cleaning unit, and then start the cleaning machine again.

[0088] When the cleaning disc assembly needs to be removed for cleaning or replacement, the user can easily remove it without any tools due to the quick-release mechanism between the cleaning disc assembly and the locking disc 12. Additionally, if the bristles of the cleaning section are worn or the aramid fabric 219 is damaged, the user can purchase a new cleaning disc assembly for replacement.

[0089] In summary, this automatic barbecue grill cleaning device has the following beneficial effects.

[0090] First, the four cleaning disc components are arranged in a cross shape, and the cleaning part of each cleaning disc component is a circular surface coverage area. The four circular areas stacked together can cover a large area, which is much larger than the linear contact area of ​​the rotating brush bristles, resulting in high cleaning efficiency.

[0091] Secondly, a worm gear drive mechanism is adopted, with each motor driving two cleaning turntable components simultaneously, whereas existing technology requires three motors. The reduction in the number of motors directly reduces manufacturing costs. In addition, the two cleaning turntable components on the same side rotate at exactly the same speed, ensuring smooth movement.

[0092] Third, it features a coarse wiping mode, a pure wet wiping mode, and a dry-wet mixed wiping mode, offering diverse functions. Different mode combinations can achieve the best cleaning results, and users can flexibly choose according to their needs. It is highly automated and requires no manual supervision.

[0093] Fourth, the magnetic attraction between the magnet 214 and the iron block 14 achieves axial positioning of the locking disc 12 and the chassis 211, preventing the cleaning turntable assembly from falling off; the engagement of the positioning pin 124 and the positioning hole 216 achieves circumferential positioning and transmits rotational torque; the engagement of the anti-rotation block 125 and the anti-rotation groove 215 further transmits torque and achieves foolproof assembly. This multi-positioning structure ensures the reliability of the connection and allows users to quickly replace the cleaning turntable assembly without the need for any tools.

[0094] Fifth, the four cleaning turntable components protrude from the outer contour of the body 1. When they collide with the edge of the grill, they first contact the turntable and automatically retract and change direction using the collision force.

[0095] Sixth, the brush bristles 213 are made of PA612 material, which is heat-resistant, non-deformable, and does not shed. It has moderate hardness and will not scratch the enamel or non-stick coating of the grill. The aramid cloth 219 is wear-resistant and heat-resistant, and soft in texture, also preventing scratches on the grill surface. The sponge 218 provides cushioning, making the wiping pressure more even. This combination of materials ensures that the cleaning process will not cause any damage to the grill. In summary, the automatic barbecue grill cleaning device provided in this application achieves large-area cleaning coverage and stable walking support by driving four cleaning turntable components through two cross-arranged double-headed worm gear motors; it achieves convenient replacement and flexible cleaning methods through a combination of magnetic quick-release structure and multiple cleaning parts; it achieves intelligent cleaning combining dry and wet cleaning through a washing mechanism and segmented control; and it achieves smooth random movement through an anti-collision self-avoidance design. Therefore, this device can clean the barbecue grill efficiently, safely, and conveniently.

[0096] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning device for barbecue grills, characterized in that, It includes a body (1), two worm gear drive mechanisms and four cleaning turntable assemblies; the body (1) has opposing bottom surfaces; Of the four cleaning turntable assemblies, two cleaning turntable assemblies are arranged along a first direction at the bottom of the body (1), and the other two cleaning turntable assemblies are arranged along a second direction at the bottom of the body (1). The first direction and the second direction are two directions that are perpendicular to each other. A worm gear drive mechanism is installed inside the body (1) extending along a first direction. The worm gear drive mechanism is used to drive the two cleaning turntable assemblies arranged along the first direction to rotate. Another worm gear drive mechanism is installed inside the body (1) extending in a second direction. This worm gear drive mechanism is used to drive the two cleaning turntable assemblies arranged in the second direction to rotate. The cleaning turntable assembly has a cleaning section that is lower than the bottom surface of the body (1) and acts on the grill to clean the grill.

2. The automatic cleaning device for barbecue grills according to claim 1, characterized in that, The cleaning mechanism includes a water pump (8), a water tank (9), and a pipeline mechanism. The water pump (8) and the water tank (9) are installed in the internal cavity of the machine body (1). The water inlet of the pipeline mechanism is connected to the water outlet of the water pump (8). The pipeline mechanism has four water outlets. The four water outlets pass through the machine body (1) and extend into the four cleaning turntable assemblies respectively. The cleaning turntable assembly is provided with several drainage channels. The cleaning mechanism is used to transport the water in the water tank (9) to the drainage channels of the cleaning turntable assembly. After the water in the drainage channels flows out, it is sprayed onto the grill.

3. The automatic cleaning device for a barbecue grill according to claim 2, characterized in that, The worm drive mechanism includes a shaftless motor, a worm, two driving gears, two transmission shafts (13), two driven gears (16), and two locking discs (12). The two drive shafts (13) are arranged along the first direction and are vertically mounted on the base (101) of the body (1). The bottom end of the drive shaft (13) passes through the base (101) of the body (1). Each drive shaft (13) is equipped with a driven gear (16). The shaftless motor is located between the two transmission shafts (13). The worm passes through the hollow rotor of the shaftless motor. A driving gear is installed at each end of the worm. The driving gear and the driven gear (16) correspond one-to-one, and the driving gear and the corresponding driven gear (16) mesh with each other. Each of the drive shafts (13) has a locking disc (12) mounted at its bottom end, and each of the locking discs (12) has a cleaning disc assembly mounted at its bottom.

4. The automatic cleaning device for a barbecue grill according to claim 3, characterized in that, The top surface of the locking disc (12) is provided with a ring plate (122), and a water storage space is formed inside the ring plate (122). The top surface of the locking disc (12) is provided with a water outlet (123) that passes through the locking disc (12), and the water outlet (123) is connected to the water storage space. The cleaning turntable assembly includes a chassis (211) and a cleaning part installed at the bottom of the chassis (211). The chassis (211) is provided with a plurality of drain holes (217), and the water outlet (123) and the drain holes (217) are connected. The outlet of the pipeline extends into the water storage space.

5. The automatic cleaning device for a barbecue grill according to claim 4, characterized in that, The locking disc (12) and the cleaning turntable assembly are quickly connected via a magnetic component.

6. The automatic cleaning device for a barbecue grill according to claim 5, characterized in that, The magnetic component includes an iron block (14) and a magnet block (214). The iron block (14) is located at the bottom of the locking disc (12) and has an iron block mounting groove. The iron block (14) is embedded and fixed in the iron block mounting groove. The bottom surface of the iron block (14) is lower than the bottom surface of the locking disc (12). The top surface of the chassis (211) is provided with a groove, the magnet block (214) is provided in the groove, and the bottom of the iron block (14) extends into the groove and is attracted to the magnet block (214).

7. The automatic cleaning device for a barbecue grill according to claim 4, characterized in that, The bottom of the locking disc (12) is provided with a plurality of positioning pins (124), and the chassis (211) is provided with positioning holes (216) corresponding to the positioning pins (124) one by one, and the positioning pins (124) are embedded in the corresponding positioning holes (216).

8. An automatic cleaning device for a barbecue grill according to claim 4, characterized in that, The top surface of the chassis (211) is provided with two symmetrically arranged arc-shaped plates (212), and two anti-rotation grooves (215) are formed between the ends of the two arc-shaped plates (212). The circumferential surface of the locking disc (12) is provided with two anti-rotation blocks (125) that are adapted to the anti-rotation grooves (215), and the anti-rotation blocks (125) are embedded in the anti-rotation grooves (215).

9. An automatic cleaning device for barbecue grills according to claim 4, characterized in that, The cleaning unit includes a plurality of brush bristles (213) located at the bottom of the chassis (211). The brush (213) is inclined on the base (211), and the included angle between the brush (213) and the grill is 20°-25°. The bristles at the center of the brush (213) are higher than the surrounding bristles.

10. An automatic cleaning device for a barbecue grill according to claim 4, characterized in that, The cleaning unit includes a sponge (218), an aramid fabric (219), and Velcro. The sponge (218) is located between the top surface of the aramid fabric (219) and the bottom surface of the chassis (211). The aramid fabric (219) is fixed to the bottom surface of the chassis (211) by the Velcro.

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