Self-powered multifunctional outdoor grill

Abstract

The invention relates to the technical field of barbecue ovens, and discloses a self-powered multifunctional outdoor grill which comprises an oven arranged on the grill, a power generation module is arranged at the bottom end of the oven, a power management module is arranged on one side of the oven, and the power generation module comprises a heat absorption panel, a thermoelectric device, cooling fins and a fan which are sequentially arranged from top to bottom; according to the invention, the power generation module recovers the waste heat of the oven and converts the waste heat into electric energy, the electric energy is processed by the power supply management module and then supplies power to each functional module, and each module works cooperatively, so that outdoor barbecue does not need to depend on an external power supply, and the energy is fully utilized; multiple functions such as lighting, smoke discharging and automatic skewering are achieved, and the effects of improving outdoor barbecue convenience, saving energy and protecting the environment are achieved.

Description

Technical Field

[0001] This invention relates to the field of barbecue grill technology, specifically a self-powered multifunctional outdoor barbecue grill. Background Technology

[0002] Outdoor barbecues or camping typically require electricity to power devices such as lighting, phone charging, and small fans. Currently, these power needs are mainly met by portable power banks or small fuel generators. Portable power banks have limited capacity, require pre-charging, and cannot provide continuous high-power electricity; fuel generators, on the other hand, are noisy, bulky, require additional fuel, and emit exhaust fumes, seriously affecting the outdoor experience. In addition, barbecue grills generate a lot of waste heat when burning charcoal, which is not effectively utilized in traditional grills and is directly lost to the environment, resulting in energy waste.

[0003] Existing outdoor barbecue equipment mainly relies on external power sources or large battery packs to drive electric auxiliary modules such as automatic string rotating, smoke exhaust fans, and lighting. However, the outdoor environment is complex, external power sources are not easy to obtain, and battery packs have problems such as short battery life, inability to be used at high temperatures, and inconvenience in maintenance.

[0004] On the other hand, the grilling process itself involves the loss of a large amount of heat energy. If this heat energy can be effectively recovered and converted into electrical energy, it will greatly improve the integration, automation and convenience of outdoor grilling equipment. Therefore, self-powered grilling devices based on the thermoelectric effect have broad application prospects.

[0005] Currently, thermoelectric power generation modules are mostly used for industrial waste heat recovery. There are no publicly reported product solutions that integrate into small outdoor barbecue grills and also have multiple output functions (such as stringing, smoke exhaust, lighting and mobile device charging). Therefore, there is an urgent need to provide a self-powered multifunctional outdoor barbecue grill that has a reasonable structure, can withstand high temperatures, can generate electricity stably, and can drive multiple functional modules. Summary of the Invention

[0006] The purpose of this invention is to provide a self-powered multifunctional outdoor barbecue grill that recovers waste heat from the grill through a power generation module, converts it into electrical energy, processes it through a power management module, and powers various functional modules. The modules work together, so that outdoor barbecues do not need to rely on an external power source, making full use of energy and realizing multiple functions such as lighting, smoke extraction, and automatic string rotation. This improves the convenience of outdoor barbecues and achieves energy-saving and environmental protection effects, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, a self-powered multifunctional outdoor barbecue grill is provided, including a grill mounted on the grill, a power generation module at the bottom of the grill, and a power management module on one side of the grill. The power generation module includes a heat-absorbing panel, thermoelectric devices, heat dissipation fins, and a fan arranged sequentially from top to bottom; it also includes a lighting module, a smoke extraction module, and an automatic string-turning module mounted on the grill.

[0008] Furthermore, the heat absorption panel includes a mounting plate, which is plate-shaped and closely attached to the thermoelectric device. The mounting plate has multiple through-holes running vertically through it. It also includes heat transfer plates that are evenly spaced along the width of the mounting plate, and the upper surface of the heat transfer plates is wavy along the length direction.

[0009] Furthermore, the fan includes a fan mounting frame, fan blades, and an air inlet duct. At different heights on the outside of the air inlet duct, there are upper and lower air inlets arranged at equal intervals along the circumference.

[0010] Furthermore, the tangent angles between the upper and lower air inlets and the air inlet pipe are 20-40 degrees, and they are aligned with the guide grooves between the heat transfer plates.

[0011] Furthermore, the power management module consists of a control circuit board and an energy storage battery. Additionally, the lighting module includes a telescopic lamp holder and a lighting fixture, the latter being powered by the power management module.

[0012] Furthermore, the smoke exhaust module includes a smoke exhaust fan, a flow guide pipe, a fan protective cover, and an angle adjustment shaft; it also includes a support rod, the top of which is connected to the flow guide pipe via the angle adjustment shaft, and the smoke exhaust fan is powered by the power management module.

[0013] Furthermore, one end of the guide pipe is a large-diameter horizontal pipe facing the grilling area, while the other end narrows into a ring-shaped pipe with a fan protective cover at the port. The angle adjustment shaft is located on the outside of the guide pipe. The angle adjustment shaft connects the smoke exhaust module to the support rod and fixes it at a 45° position above and behind the grill. The rotation angle of the smoke exhaust module can be adjusted as needed.

[0014] Furthermore, an automatic skewer rotating module is installed at the top of the grill and is located in the grilling area of ​​the grill, powered by a power management module.

[0015] Furthermore, the automatic stringing module includes a support frame with mounting slots spaced apart along its length. Each mounting slot contains a micro motor connected to the power management module. The output end of the micro motor has a drive gear and a stringing roller meshing with it.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The power generation module installed at the bottom of the oven has a stainless steel substrate with a titanium nitride coating on the surface and a structure with a wave-shaped channel and circumferential guide groove. It is precisely aligned with the vortex air inlet at a specific angle at the bottom of the oven body, so that the hot air flow generated by combustion is effectively guided and evenly washes the heat absorption panel, which greatly improves the heat absorption efficiency and uniformity. At the same time, the high-temperature end of the thermoelectric device is set with micro-grooves and filled with high thermal conductivity silicone grease, which is closely attached to the heat absorption panel, significantly reducing thermal resistance. Thus, the waste heat lost in the traditional oven is efficiently converted into electrical energy, realizing on-site energy recovery and utilization, and fundamentally solving the problems of inconvenient power acquisition and heat energy waste in outdoor scenarios. 2. By integrating zoned infrared temperature and weight sensors into the automatic stringing module and linking them with the ambient light sensor data of the lighting module, the microcontroller comprehensively analyzes the data and independently and precisely controls the speed, direction, and dwell time of each stringing motor in the low-temperature zone. At the same time, when the ambient light is too dim, the lighting automatically turns on and adjusts the brightness, focusing on illuminating the low-temperature baking zone. This allows ingredients of different weights and types to be baked in a differentiated and uniform manner according to the real-time temperature field, while ensuring user visibility. This achieves intelligent and adaptive baking process, significantly improving the uniformity and success rate of baking, reducing the burning rate, and reducing the burden of manual intervention for users. Attached Figure Description

[0017] Figure 1 This is an isometric view of the grill rack of the present invention; Figure 2 This is a schematic diagram of the power generation module of the present invention; Figure 3 This is an exploded view of the power generation module of the present invention; Figure 4 This is a schematic diagram of the heat dissipation fins of the present invention; Figure 5 This is a cross-sectional view of the heat dissipation fins of the present invention; Figure 6 This is a schematic diagram of the smoke extraction module of the present invention; Figure 7 This is a schematic diagram of the automatic serial-to-serial conversion module of the present invention; Figure 8 For the present invention Figure 7 AA diagram; Figure 9 For the present invention Figure 8 A magnified view of a portion of the image.

[0018] In the diagram: 1. Grill rack; 2. Oven; 3. Power generation module; 4. Power management module; 5. Lighting module; 6. Smoke exhaust module; 7. Automatic rotating string module; 8. Heat absorption panel; 9. Thermoelectric components; 10. Heat dissipation fins; 11. Fan; 1101. Fan mounting frame; 1102. Fan blades; 1103. Upper air inlet; 1104. Air inlet duct; 1105. Lower air inlet; 12. Control circuit board; 13. Energy storage battery; 14. Support rod; 15. Mounting plate; 16. Support frame; 17. Mounting slot; 18. Micro motor; 1801. Drive gear; 1802. Rotating string roller; 19. Telescopic lamp holder; 20. Lighting lamp; 21. Smoke exhaust fan; 22. Air guide duct; 23. Fan protective cover; 24. Angle adjustment shaft. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Unless otherwise stated or in case of contradiction, the terms or phrases used in this application have the following meanings: In this application, "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features; thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature; in this application, "one or more" refers to any one, any two, or any two or more of the listed items; wherein, "several" refers to any two or more; in this application, it is necessary to understand that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are... The orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application; in this application, unless otherwise expressly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly, for example, they can refer to connection, detachable connection, or integral; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements; for those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] In one implementation, such as Figure 1-6The diagram shows a self-powered multi-functional outdoor barbecue grill, including a grill 2 mounted on a grill 1, a power generation module 3 at the bottom of the grill 2, and a power management module 4 on one side of the grill 2. The power generation module 3 includes a heat absorption panel 8, a thermoelectric device 9, a heat dissipation fin 10, and a fan 11 arranged sequentially from top to bottom. It also includes a lighting module 5, a smoke exhaust module 6, and an automatic string rotation module mounted on the grill 1.

[0022] In this embodiment, the grill 1 has an overall frame structure with four support feet at the bottom. The bottom of the support feet is covered with anti-slip rubber sleeves to enhance the stability of the grill on the ground and prevent it from sliding during use. The oven 2 is fixedly installed in the middle area of ​​the grill 1. The oven 2 is a rectangular box structure with an opening at the top. The inner wall of the oven 2 is treated with a high-temperature resistant ceramic coating. The high-temperature resistant ceramic coating can withstand the high temperature environment during the grilling process and has good heat insulation performance to reduce heat loss to the outside of the oven 2. The bottom of the oven 2 is equipped with a removable charcoal tray for easy addition of charcoal and cleaning of ash. The heat-absorbing panel 8 is laid horizontally below the bottom of the oven 2, closely fitting the bottom of the oven 2 to fully absorb the heat transferred from the oven 2. The thermoelectric device 9 is located directly below the heat-absorbing panel 8, with its top end fitting against the lower surface of the heat-absorbing panel 8. The thermoelectric device 9 is made of semiconductor thermoelectric material and uses the thermoelectric effect to convert heat energy into electrical energy. The heat dissipation fins 10 are located below the thermoelectric device 9 and are fixedly connected to the bottom end of the thermoelectric device 9. The heat dissipation fins 10 have a comb-like structure, which increases the contact area with the air and improves the heat dissipation efficiency. The fan 11 is installed directly below the heat dissipation fins 10 and fixed to the bottom of the mounting cavity. When the fan 11 is working, it generates an upward airflow, which accelerates the airflow around the heat dissipation fins 10 and further enhances the heat dissipation effect. The power management module 4 is fixed to the grill rack 1 on one side of the oven 2 by a bracket and is connected to the power generation module 3 by a wire. It is used to receive the electrical energy generated by the power generation module 3 and process, store and distribute the electrical energy to provide a stable power supply for the lighting module 5, the smoke exhaust module 6 and the automatic transfer module 7.

[0023] In one possible implementation, the heat-absorbing panel 8 includes a mounting plate 15, which is plate-shaped and closely attached to the thermoelectric device 9. The mounting plate 15 has multiple through-holes to ensure smooth airflow, providing sufficient oxygen for combustion and promoting heat transfer. It also includes heat transfer plates evenly spaced along the width of the mounting plate 15. The upper surface of the heat transfer plates is wavy along the length direction. The wavy structure can increase the contact area between the heat transfer plates and the high-temperature airflow generated by the charcoal fire, thereby improving the heat absorption efficiency. At the circumferential edge of the mounting plate 15, there is a circumferentially inclined guide groove. The guide groove is at a 30° angle with the wavy channel. The groove is 5mm wide and 3mm deep, and is evenly distributed along the edge of the mounting plate 15 to guide the directional flow of airflow.

[0024] In this embodiment, thermally conductive silicone grease is applied to the bottom of the mounting plate 15 of the heat-absorbing panel 8. A micro-groove thermally conductive structure is provided in the area where the top of the thermoelectric device 9 is in contact with the mounting plate 15. The grooves are 0.5 mm deep, 1 mm wide, and 2 mm apart, which further increases the contact area between the thermoelectric device 9 and the mounting plate 15, reduces thermal resistance, and allows heat to be quickly transferred from the mounting plate 15 to the high-temperature end of the thermoelectric device 9. There are multiple thermoelectric devices 9, which are evenly arranged along the length of the mounting plate 15. Multiple thermoelectric devices 9 are connected in series to enhance the overall output power of the power generation module 3. The surface of the wires of the thermoelectric device 9 is wrapped with high-temperature resistant heat insulation material, which can effectively isolate the surrounding high temperature and prevent the wires from being damaged due to high temperature aging. One end of the wire is connected to the electrode of the thermoelectric device 9, and the other end is connected to the power input interface of the power management module 4 to transmit the electrical energy generated by the thermoelectric device 9 to the power management module 4.

[0025] In one possible implementation, the fan 11 includes a fan fixing frame 1101, fan blades 1102 and air inlet pipe 1104, with upper air inlet 1103 and lower air inlet 1105 arranged at equal intervals along the circumference at different heights on the outside of the air inlet pipe 1104.

[0026] The air inlet duct 1104 is a cylindrical pipe. The upper end of the air inlet duct 1104 is connected to the bottom of the fan fixing frame 1101 and corresponds to the air inlet side of the fan blade 1102. The air inlet duct 1104 extends downward to facilitate the intake of cold air from the outside. At different heights on the outside of the air inlet duct 1104, there are upper air inlets 1103 and lower air inlets 1105 arranged at equal intervals along the circumference. The upper air inlet 1103 is located at the upper part of the air inlet duct 1104, and the lower air inlet 1105 is located at the lower part of the air inlet duct 1104. Both the upper air inlet 1103 and the lower air inlet 1105 are rectangular openings. Multiple upper air inlets 1103 and lower air inlets 1105 are evenly distributed along the circumference of the air inlet duct 1104 to ensure uniform air intake and sufficient air volume.

[0027] In one possible implementation, the tangential angle between the upper air inlet 1103 and the lower air inlet 1105 and the air inlet pipe 1104 is 20-40 degrees, and they are aligned with the guide groove between the heat transfer plates. The tangential angle between the upper air inlet 1103 and the lower air inlet 1105 and the guide groove is 25°~35°, so that the incoming air forms a vortex airflow. During the grilling process, the charcoal fire burns in the oven 2 and generates high temperature. The air enters the oven 2 through the upper air inlet 1103 and the lower air inlet 1105. The air forms a vortex airflow under the action of the tangential angle. The spiral airflow can enhance the cooperation with the fan blade 1102 and increase the flow speed of the airflow. The airflow enters the ventilation hole of the mounting plate 15 and flows through the wave-shaped channel, forming a three-stage airflow path of vortex airflow → guide groove guidance → wave-shaped channel enhanced convection. The vortex airflow allows oxygen to fully contact the charcoal, improving combustion efficiency. At the same time, the wave-shaped channel increases the contact time and area between the airflow and the heat transfer plate, enabling the heat-absorbing panel 8 to absorb heat more evenly, thus making the temperature distribution of the hot end of the thermoelectric device 9 more uniform. This results in more complete combustion of the charcoal, stabilizing the charcoal temperature at 280~300℃, reducing the temperature fluctuation range, maintaining the temperature difference of the thermoelectric device 9 at 120~130℃, improving power generation, and achieving a simultaneous improvement in combustion efficiency and power generation efficiency.

[0028] In addition, the heat transfer plate can be hinged to the mounting plate 15. At the same time, the angle between the heat transfer plate and the mounting plate 15 can be adjusted by a micro servo motor on the mounting plate 15. The micro servo motor is model SG90, and its adjustment angle is ±10°. Its output shaft is connected to the mounting plate 15 of the heat absorption panel 8, which can drive the mounting plate 15 to rotate around the axis, thereby dynamically changing the opening of the wave-shaped channel. Three sets of NTC temperature sensors are respectively arranged on the mounting plate 15, thermoelectric device 9 and heat dissipation fins 10 of the heat absorption panel 8, which can monitor the temperature of each key component in real time and ensure a comprehensive understanding of the temperature status of the equipment. The micro servo motor and NTC temperature sensor are connected to the MCU of the power management module 4. The MCU controls the operation of the micro servo motor and the cooling fan 11 based on the temperature data collected by the NTC temperature sensor. When the temperature of the mounting plate 15 exceeds the safety threshold, the MCU controls the micro servo motor to drive the heat transfer plate to adjust the angle, increase the opening of the wave-shaped channel, increase the airflow, and reduce the local temperature. At the same time, the MCU controls the cooling fan 11 to increase its speed to enhance the heat dissipation effect. The power management module 4 temporarily cuts off the non-core load of USB charging to prioritize the power supply of the cooling fan 11 and the safety of the equipment. When the temperature detected by each temperature sensor returns to normal, the MCU controls the micro servo motor and the cooling fan 11 to automatically reset to the initial state, and the power management module 4 resumes full-load operation to ensure the continuity of the grilling process.

[0029] In one possible implementation, the power management module 4 consists of a control circuit board 12 and an energy storage battery 13.

[0030] In this embodiment, the control circuit board 12 is a rectangular printed circuit board. The control circuit board 12 integrates a power input interface, a battery charging and discharging bidirectional interface, an external device power supply interface, an MPPT charging controller, and a multi-channel DC-DC voltage conversion module. The electronic components are connected through the printed circuit. The power input interface is located on one side of the control circuit board 12 and is connected to the wires of the power generation module 3 to receive the electrical energy output by the power generation module 3; the battery charging and discharging bidirectional interface is connected to the energy storage battery 13 to realize the charging and discharging control of the energy storage battery 13; the external device power supply interface includes at least one USB output interface, which is located on the side of the casing to facilitate users to connect mobile devices such as mobile phones for charging. The USB output interface supports the 5V / 2A output specification to meet the charging needs of common mobile devices.

[0031] The MPPT charging controller uses a dedicated MPPT control chip, which can track the maximum power point of the power generation module 3 in real time, ensuring that the power generation module 3 always operates in the optimal power generation state and improving the energy collection efficiency. The multi-channel DC-DC voltage conversion module can convert the unstable voltage generated by the power generation module 3 into a stable DC voltage, providing suitable operating voltages for charging the energy storage battery 13 and for loads such as the lighting module 5, the smoke exhaust module 6, and the automatic serial transfer module 7. Specifically, it provides 12V voltage for the lighting module 5, 12V voltage for the smoke exhaust module 6, and 6V voltage for the automatic serial transfer module 7.

[0032] The energy storage battery 13 uses a lithium battery pack. The energy storage battery 13 is fixed inside the lower part of the casing and is connected to the bidirectional battery charging and discharging interface of the control circuit board 12 through wires. It is used to store the electrical energy generated by the power generation module 3. When the output power of the power generation module 3 is insufficient or stops generating electricity, it provides a continuous power supply to each load to ensure the normal operation of each functional module.

[0033] In one possible implementation, the lighting module 5 includes a telescopic lamp holder 19 and a lighting lamp 20, which is powered by the power management module 4.

[0034] In this embodiment, the telescopic lamp holder 19 consists of a fixed rod and a telescopic rod. The fixed rod is a cylindrical hollow rod. The lower end of the fixed rod is fixed to one side of the top of the grill 1 by bolts. The upper end of the fixed rod is provided with locking bolts to fix the position of the telescopic rod. The telescopic rod is a cylindrical solid rod with a diameter smaller than the inner diameter of the fixed rod. The lower end of the telescopic rod is inserted into the interior of the fixed rod and can slide up and down along the axis of the fixed rod to achieve telescopic adjustment. The height of the lighting lamp 20 can be changed by telescopic adjustment to adapt to different lighting needs. The upper end of the telescopic pole is equipped with a rotary joint, which is a ball joint structure that can rotate 360 ​​degrees. The lighting lamp 20 is fixed on the rotary joint. The illumination angle of the lighting lamp 20 can be adjusted through the rotary joint so that the lighting can accurately cover the barbecue area. The lighting lamp 20 uses LED lamp beads to provide clear lighting for the barbecue area. The lighting lamp 20 is connected to the power management module 4 through a wire with a switch, which makes it easy for the user to control the lighting lamp 20 to turn on and off.

[0035] In addition, a sensing module connected to the power management module 4 is provided on the outside of the grill 1. The sensing module includes four sets of infrared temperature sensors MLX90614, an ambient light sensor BH1750, and a food weight sensor. The four sets of infrared temperature sensors MLX90614 are respectively located in the front, back, left, and right areas of the grill, with a detection range of -40~300℃. They can monitor the temperature of different areas of the grill in real time and provide temperature data for subsequent collaborative control. The ambient light sensor BH1750 is located on the telescopic lamp holder 19 of the lighting module 5, with a detection range of 0~65535lx, and is used to collect the ambient light intensity. The food weight sensor is a micro strain gauge with a range of 0~5kg. It is located on the support frame 16 of the automatic skewer transfer module 7, corresponding to the placement position of the skewers, and can detect the weight of the food.

[0036] All of the above sensors are connected to the MCU of the power management module 4. The MCU uses the data collected by the sensors to achieve coordinated control of the lighting module 5 and the automatic serial transfer module 7. During operation, the ambient light sensor BH1750 collects the ambient light intensity in real time. When the ambient light intensity is ≤100lx, the MCU controls the lighting lamp 20 to turn on automatically, and the brightness is linearly adjusted with the ambient light intensity, with an adjustment range of 10%~100%. The lower the ambient light intensity, the brighter the lighting lamp 20, ensuring the visibility of the grilling area. At the same time, the MCU receives data from four sets of infrared temperature sensors MLX90614 to determine the low temperature area of ​​the grill and assist the user in adjusting the charcoal distribution to make the grill temperature distribution more uniform.

[0037] In one possible implementation, the smoke exhaust module 6 includes a smoke exhaust fan 21, a guide pipe 22, a fan protective cover 23, and an angle adjustment shaft 24; it also includes a support rod 14, the lower end of which is fixed to the rear side of the grill 1 by bolts, and the top end of which is connected to the guide pipe 22 via the angle adjustment shaft 24. The smoke exhaust fan 21 is powered by the power management module 4.

[0038] In one possible implementation, one end of the guide pipe 22 has a large horizontal diameter and faces the grilling area, thereby achieving large-scale collection of oil fumes generated during grilling. The other end narrows into a ring-shaped pipe and a fan protective cover 23 is installed at the port. An angle adjustment shaft 24 is located outside the guide pipe 22. The angle adjustment shaft 24 connects the smoke exhaust module 6 to the support rod 14 and fixes it at a 45° position above and behind the grill 1. This ensures that the large-diameter end of the guide pipe 22 is precisely aligned with the source of oil fumes in the grilling area, improving the efficiency of oil fume collection. The rotation angle of the smoke exhaust module 6 can be adjusted as needed. When the oil fumes in the grilling area are unevenly distributed, the orientation of the guide pipe 22 can be adjusted to ensure that the oil fumes can be fully collected and discharged, improving the environmental quality of outdoor grilling.

[0039] The angle adjustment shaft 24 is a damping rotating shaft structure, including a fixed part and a rotating part. The fixed part is fixedly connected to the top end of the support rod 14, and the rotating part is fixedly connected to the outside of the guide pipe 22. The rotating part can rotate relative to the fixed part and has a certain damping force during the rotation process, so that the guide pipe 22 can be fixed at any rotation angle. The exhaust fan 21 is fixedly installed inside the guide pipe 22, near the constriction end of the guide pipe 22. The exhaust fan 21 is connected to the power management module 4 through a wire. When the exhaust fan 21 is working, it generates negative pressure to draw the oil fumes from the barbecue area into the guide pipe 22 and exhaust them. The fan protective cover 23 has a mesh structure and is fixed to the constriction end of the guide pipe 22 with bolts to prevent foreign objects from entering the guide pipe 22 and damaging the exhaust fan 21, while not affecting the exhaust of oil fumes.

[0040] In one possible implementation, the top of the grill 1 is provided with an automatic skewer transfer module 7, which is arranged in the grilling area of ​​the grill 2 and powered by a power management module 4.

[0041] In one possible implementation, the automatic stringing module 7 includes a support frame 16, on which mounting slots 17 are spaced apart along the length direction. Each mounting slot 17 is provided with a micro motor 18 connected to the power management module 4. A drive gear 1801 is provided at the output end of the micro motor 18, and a stringing roller 1802 meshing with it is also provided.

[0042] In this embodiment, to ensure stable installation, the automatic skewer transfer module 7 is fixedly connected to the grill 1 via a bracket to prevent shaking during operation. The automatic skewer transfer module 7 includes a support frame 16, which is a rectangular frame structure. The support frame 16 has mounting slots 17 spaced apart along its length. The mounting slots 17 are U-shaped slots. Multiple mounting slots 17 are evenly distributed along the length of the support frame 16, which can simultaneously meet the installation requirements of multiple skewers.

[0043] Each mounting slot 17 is equipped with a micro motor 18, which is a DC geared motor. The micro motor 18 is fixed to the bottom of the mounting slot 17 by bolts, and the output end of the micro motor 18 faces the opening of the mounting slot 17. A drive gear 1801 is provided at the output end of the micro motor 18. The drive gear 1801 is a spur gear with 12 teeth and a module of 1. The drive gear 1801 is fixed to the output shaft of the micro motor 18 by a key connection and rotates together with the output shaft of the micro motor 18. The automatic skewer rotation module 7 also includes a skewer rotation roller 1802. The skewer rotation roller 1802 is barrel-shaped, with a spur gear-shaped inner side that is nested with the drive gear 1801. The outer side of the skewer rotation roller 1802 is smooth to ensure that the skewer rotation roller 1802 can drive the skewers to rotate synchronously when rotating.

[0044] In this embodiment, in order to achieve multi-module collaborative linkage and improve the overall usage effect, the modules are intelligently coordinated through the control circuit of the power management module 4. When the power generation module 3 is working, the heat absorption panel 8 absorbs the heat transferred from the oven 2 and transfers it to the high-temperature end of the thermoelectric device 9. At the same time, the fan 11 works to accelerate the heat dissipation of the heat dissipation fins 10, so that the cold end of the thermoelectric device 9 is kept at a low temperature, forming a stable temperature difference. The thermoelectric device 9 converts heat energy into electrical energy and transmits it to the power management module 4 through the wire.

[0045] The MPPT charging controller of the power management module 4 tracks the maximum power point of the power generation module 3. The multi-channel DC-DC voltage conversion module converts electrical energy into a suitable voltage. Part of the electrical energy is used to charge the energy storage battery 13, and the other part of the electrical energy directly powers the lighting module 5, the smoke exhaust module 6, and the automatic serial transfer module 7.

[0046] When the outdoor ambient light is dim, the user can turn on the lighting module 5 and adjust the height and angle of the lighting lamp 20 through the telescopic lamp holder 19 to provide sufficient lighting for the barbecue area. The fumes generated during the barbecue process are drawn into the guide pipe 22 and discharged through the exhaust fan 21 of the exhaust module 6. The user can adjust the angle of the guide pipe 22 according to the distribution of fumes to improve the exhaust effect. At the same time, the skewers are installed on the rotating roller 1802 of the automatic rotating module 7. The micro motor 18 is turned on, and the skewers are automatically rotated under the drive of the drive gear 1801 and the rotating roller 1802 to ensure even grilling.

[0047] The working principle of this application is as follows: When a user is barbecuing outdoors, charcoal is first added to and lit in the grill 2. The heat generated by the burning charcoal directly acts on the food in the grill area, thus grilling the food. At the same time, a large amount of heat released during the combustion process is transferred to the heat absorption panel 8 of the power generation module 3 at the bottom of the grill 2 through radiation. Since the mounting plate 15 of the heat absorption panel 8 is in close contact with the bottom of the grill 2, and the corrugated heat transfer plate increases the contact area with residual heat, and the ventilation holes on the mounting plate 15 promote heat convection, In addition, the circumferentially inclined guide groove guides the airflow, so that the waste heat is efficiently absorbed and quickly transferred to the high-temperature end of the thermoelectric device 9. At the same time, the fan 11 starts to run synchronously. Outside air enters through the upper air inlet 1103 and the lower air inlet 1105 of the air inlet pipe 1104, aligns with the guide groove between the heat transfer plate to form a vortex airflow, and under the drive of the fan blade 1102, it flows precisely to the heat dissipation fins 10 and quickly blows on its surface, quickly taking away the heat from the cold end of the thermoelectric device 9, maintaining a stable temperature difference environment at both ends of the thermoelectric device 9, and ensuring the thermoelectric conversion efficiency.

[0048] Thermoelectric device 9 converts thermal energy into electrical energy through the thermoelectric effect under a stable temperature difference. The electrical energy is then transmitted to power management module 4 via wires wrapped with high-temperature resistant insulation material. The high-temperature resistant insulation material of the wires prevents aging and damage under high-temperature conditions. The MPPT charging controller of power management module 4 tracks the maximum power point of power generation module 3 in real time to ensure maximum collection of electrical energy. The multi-channel DC-DC voltage conversion module converts the unstable electrical energy output by power generation module 3 into a stable DC voltage. Part of the electrical energy is used to charge and store energy storage battery 13 through the battery charging and discharging bidirectional interface, while the other part of the electrical energy is directly distributed to lighting module 5, smoke exhaust module 6, and automatic serial transfer module 7 to meet the power needs of each functional module.

[0049] The lighting module 5 automatically starts based on the ambient light intensity detected by the ambient light sensor. If the ambient light intensity is ≤100lx, the lighting lamp 20 will automatically turn on, and the brightness will be linearly adjusted according to the ambient light intensity, with higher brightness as the ambient light dims. Users can also manually control the lighting lamp 20 to turn on and off via the switch on the wire. At the same time, the height can be adjusted by using the fixed rod and telescopic rod of the telescopic lamp holder 19, and the illumination angle can be adjusted by using the rotary joint to ensure that the light accurately covers the grilling area, providing a clear view for nighttime or low-light outdoor scenes. The MCU will also guide the lighting to focus on covering the low-temperature area of ​​the grill detected by the infrared temperature sensor, assisting users in adjusting the distribution of charcoal.

[0050] When powered on, the exhaust fan 21 of the exhaust module 6 starts and generates negative pressure. The large-diameter end of the guide pipe 22 faces the grilling area. At the same time, the exhaust module 6 is fixed at a 45° position above and behind the grill 1 by the angle adjustment shaft 24, which can accurately target the source of oil fumes. Users can adjust the turning angle of the guide pipe 22 by the angle adjustment shaft 24. When the oil fumes are unevenly distributed in the grilling area, the angle can be flexibly adjusted to ensure that the oil fumes are fully sucked in. The oil fumes are discharged through the annular pipe at the constriction end of the guide pipe 22. The fan protective cover 23 prevents foreign objects from entering the interior of the guide pipe 22, avoiding damage to the exhaust fan 21 and effectively improving the environmental quality of outdoor grilling.

[0051] When the micro motor 18 of the automatic skewer rotating module 7 is powered on, it starts to run. The drive gear 1801 at its output end drives the rotating roller 1802 that meshes with it to rotate. The rotating roller 1802 drives the skewers installed on it to rotate synchronously, so that all parts of the food are heated evenly and local scorching is avoided. Multiple mounting slots 17 on the support frame 16 can install multiple sets of skewers at the same time to meet the needs of multiple people for grilling. Users can also adjust the speed of the micro motor 18 according to the type of food and grilling needs through the control buttons installed on the surface of the power management module 4 to adapt to the grilling rhythm of different foods.

[0052] During this process, the sensing unit integrated on the control circuit board 12 of the power management module 4 works continuously. Four sets of infrared temperature sensors monitor the temperature of the four areas in front, behind, left, and right of the grill in real time. The food weight sensor detects the weight of the skewers. The ambient light sensor continuously collects data on the ambient light intensity. The MCU dynamically adjusts the operating parameters of each module based on this monitoring data: when the charcoal temperature is too high, the speed of the fan 11 is increased to enhance the heat dissipation effect of the cold end of the thermoelectric device 9, and the speed of the automatic skewer rotation module 7 is increased to prevent the food from burning; when the ambient light intensity changes, the brightness of the lighting lamp 20 is adjusted in real time; when the output power of the power generation module 3 fluctuates, if there is a power surplus, the energy storage battery 13 is charged first; if the power is insufficient, the energy storage battery 13 provides supplementary power to ensure that the core loads such as the lighting module 5, the smoke exhaust module 6, and the automatic skewer rotation module 7 do not operate uninterrupted.

[0053] The USB output of the external device power supply interface can charge users' mobile devices such as mobile phones at any time, meeting temporary outdoor power needs without the need to carry an additional power bank.

[0054] After the barbecue is finished, the user stops adding charcoal. As the charcoal fire gradually goes out, the residual heat of the oven 2 decreases, and the thermoelectric conversion efficiency of the power generation module 3 gradually decreases until it stops generating electricity. At this time, the energy storage battery 13 can continue to provide power to loads that need temporary power supply. After the user shuts down all functional modules or the power is exhausted, the entire device stops operating. The user can remove the charcoal placement tray at the bottom of the oven 2 to clean up the ash and complete the entire process of outdoor barbecue.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-powered multi-functional outdoor barbecue grill, comprising a grill mounted on the grill, with a power generation module at the bottom of the grill, characterized in that: The oven is equipped with a power management module on one side. The power generation module includes a heat absorption panel, thermoelectric devices, heat dissipation fins and a fan arranged from top to bottom. It also includes a lighting module, a smoke exhaust module and an automatic stringing module installed on the oven rack.

2. The self-powered multi-functional outdoor barbecue grill according to claim 1, characterized in that: The heat absorption panel includes a mounting plate, which is plate-shaped and closely attached to the thermoelectric device. The mounting plate has multiple through-holes running vertically through it. It also includes heat transfer plates that are evenly spaced along the width of the mounting plate. The upper surface of the heat transfer plates is wavy along the length direction.

3. The self-powered multi-functional outdoor barbecue grill according to claim 2, characterized in that: The fan includes a fan mounting frame, fan blades, and an air inlet pipe. Upper and lower air inlets are provided at different heights on the outside of the air inlet pipe, arranged at equal intervals along the circumference.

4. The self-powered multi-functional outdoor barbecue grill according to claim 3, characterized in that: The upper and lower air inlets have a tangent angle of 20-40 degrees with the air inlet pipe and are aligned with the guide grooves between the heat transfer plates.

5. The self-powered multi-functional outdoor barbecue grill according to claim 4, characterized in that: The power management module consists of a control circuit board and an energy storage battery.

6. The self-powered multi-functional outdoor barbecue grill according to claim 5, characterized in that: The lighting module includes a telescopic lamp holder and a lighting lamp, which is powered by a power management module.

7. The self-powered multi-functional outdoor barbecue grill according to claim 1, characterized in that: The smoke exhaust module includes a smoke exhaust fan, a flow guide pipe, a fan protective cover, and an angle adjustment shaft; it also includes a support rod, the top of which is connected to the flow guide pipe via the angle adjustment shaft, and the smoke exhaust fan is powered by a power management module.

8. The self-powered multi-functional outdoor barbecue grill according to claim 7, characterized in that: One end of the guide pipe is a large-diameter horizontal pipe facing the grilling area, and the other end narrows into a ring-shaped pipe with a fan protective cover at the port. The angle adjustment shaft is located on the outside of the guide pipe. The angle adjustment shaft connects the smoke exhaust module to the support rod and fixes it at a 45° position above and behind the grill. The rotation angle of the smoke exhaust module can be adjusted as needed.

9. The self-powered multi-functional outdoor barbecue grill according to claim 8, characterized in that: The top of the grill is equipped with an automatic skewer rotating module, which is located in the grilling area of ​​the grill and is powered by a power management module.

10. The self-powered multi-functional outdoor barbecue grill according to claim 9, characterized in that: The automatic stringing module includes a support frame with mounting slots spaced along its length. Each mounting slot contains a micro motor connected to a power management module. The output end of the micro motor has a drive gear and a stringing roller meshing with it.

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