Self-power-generation smokeless automatic barbecue oven and special thermoelectric power generation device for barbecue oven
Through the temperature differential power generation device, the automatic flip system and cooling fan are generated and driven by the temperature difference power generation device, the power dependence and oil smoke problems of existing barbecue furnaces are solved, and the automatic flip of self-generating smokeless self-generating, reducing costs and improving the barbecue experience.
Patent Information
- Application Number
- CN202510871967.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-08-12
AI Technical Summary
The existing automatic barbecue stove relies on external power supply, has limited use scenarios, safety risks, high long-term costs, and oil smoke and food are easily baked during the baking process, so the ingredients need to be turned manually.
The temperature difference power generation device is used to generate electricity, and the thermally conductive metal plate is heated by the barbecue furnace charcoal to generate electricity, drive the cooling fan and motor, realize automatic flip of the ingredients, reduce oil fume through the design of the inner and outer furnace walls, and set up a water box to collect oil.
Achieve automatic flip of self-generated smokeless smoke, reduce long-term use costs, reduce scald risks, uniformly cook food, improve barbecue experience, safety and environmental protection.
Smart Images
Figure CN120458417A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of barbecue equipment, in particular to a self-generating smokeless automatic barbecue oven and a special temperature difference power generation device. Background Art
[0002] Barbecue is a unique way of processing food ingredients. The dishes are diverse, and meat, seafood, sausages, vegetables, etc. can all be grilled. Its unique taste and atmosphere have attracted consumers of all ages and are deeply loved and liked by everyone.
[0003] Currently, the commonly used automatic barbecue grills use motors as the power source of the automatic flipping system to ensure that the skewers can be flipped stably, but the motor requires an external power supply. This form has the following defects: first, the usage scenarios are limited, it relies on power stability, has potential safety hazards, and has high long-term use costs; second, the existing barbecue grills place charcoal in the furnace body, and the food to be grilled is placed on the furnace body. The charcoal directly grills the food, which causes a lot of oil smoke when grilling the ingredients. It is neither hygienic nor environmentally friendly, and it is even more unsafe and easy to burn. Moreover, placing the ingredients directly on the oven often easily causes the surface of the food to burn too quickly while the inside is not yet cooked; in addition, a special person is required to be responsible for flipping the ingredients. If the food is not flipped in time during grilling, it is very easy to burn, resulting in a poor barbecue experience. Summary of the Invention
[0004] The purpose of the present invention is to provide a self-generating smokeless automatic barbecue grill and a temperature difference power generation device dedicated to the barbecue grill. The barbecue grill can automatically generate electricity, produces very little smoke during use, and the barbecue food can be automatically turned over to prevent burning, while saving manpower.
[0005] The technical solution of the present invention:
[0006] A temperature difference power generation device specifically for a barbecue grill comprises two temperature difference power generation units and a cooling fan. The temperature difference power generation units comprise a temperature difference power generation module, a heat conducting metal plate, and a radiator. The temperature difference power generation module is sandwiched between the heat conducting metal plate and the radiator. The heat conducting metal plate is arranged above the charcoal in the barbecue grill. The temperature difference power generation module of the first temperature difference power generation unit is connected to the cooling fan via a wire, and the temperature difference power generation module of the second temperature difference power generation unit is connected to a motor for the barbecue grill via a wire.
[0007] A self-generating smokeless automatic barbecue grill comprises an outer furnace body, an inner furnace wall, a charcoal cage, a water box, a barbecue skewer fixing plate and a temperature difference power generation device. One end of the outer furnace body is the temperature difference power generation device, and the other end is the inner furnace wall. A V-shaped guide plate is fixed to the end of the inner furnace wall facing the temperature difference power generation module. An insulation plate is provided between the V-shaped guide plate and the inner furnace wall. There are multiple ventilation holes on the inner furnace wall. A gap is left between the inner furnace wall and the outer furnace body. The upper and lower ends of the inner furnace wall are riveted to the outer furnace body. Charcoal cage slides are provided at both ends of the inner furnace wall in the longitudinal direction. The two ends of the charcoal cage slide in the slide. A horizontal long hole is opened at the bottom end of the side of the outer furnace body away from the temperature difference power generation device. The water box is inserted into the long hole from the outside. The outer furnace body extends toward the center to form a fire baffle. The barbecue skewer fixing plate is arranged on Above the fire baffle, the thermoelectric power generation device includes two thermoelectric power generation units and a cooling fan. The thermoelectric power generation unit includes a thermoelectric power generation module, a heat-conducting metal plate, and a radiator. The thermoelectric power generation module is sandwiched between the heat-conducting metal plate and the radiator. One end of the heat-conducting metal plate is arranged under the fire baffle, and the other end passes through the heat insulation plate and is bolted to the thermoelectric power generation module. The thermoelectric power generation module of the first thermoelectric power generation unit is connected to the cooling fan through a wire. The cooling fan is installed on the inner furnace wall, and a heat dissipation hole is opened in the outer furnace body corresponding to the position of the heat dissipation fan. The thermoelectric power generation module of the second thermoelectric power generation unit is connected to the power switching switch through a wire. The power switching switch is connected to the first motor and the second motor respectively. A protective cover with heat dissipation holes is provided at the position corresponding to the thermoelectric power generation device at the upper end of the outer furnace body.
[0008] Beneficial effects of the present invention:
[0009] 1. The thermoelectric power generation device of the present application has a simple structure. It uses the charcoal in the barbecue grill to heat the heat-conducting metal plate, and then uses the thermoelectric power generation module to generate electricity. It does not require any external power supply and is not restricted by the site. It has low long-term use cost and is convenient and fast.
[0010] 2. The ingredients in the barbecue grill of this application are not easy to burn, cook quickly, and taste better, because the fan can add oxygen to the charcoal in the oven while dissipating heat to the temperature difference power generation module, thereby improving the combustion efficiency of the charcoal, increasing the temperature and pressure in the oven, and heating the ingredients evenly.
[0011] 3. The barbecue grill of this application can reduce the risk of burns because there is a gap (air duct) between the outer furnace body and the inner furnace wall. The air duct can cool the outer furnace body, reducing the risk of burns, and the outer furnace body will not change color due to high temperature and can maintain its beauty for a long time.
[0012] 4. The barbecue grill of the present application is equipped with a temperature difference power generation device, which generates electricity and supplies power to the first motor and the second motor continuously. The skewers can be flipped automatically, freeing your hands and saying goodbye to the trouble of "manual flipping", realizing self-service barbecue and enhancing the happiness of barbecue.
[0013] 5. The barbecue grill of the present application is smokeless because there are fire baffles on both sides above the stove mouth (upper part of the inner stove wall) which extend obliquely from the outer stove body to the inner stove wall, and there are charcoal cage slides on both sides of the stove chamber (inside the inner stove wall) to allow the charcoal cage to slide under the fire baffle of the stove mouth. Therefore, the oil and seasoning on the skewers will not fall on the charcoal, but will fall into the water box filled with water under the stove, and no oil smoke will be generated.
[0014] 6. The barbecue grill in this application is safe. The charcoal cage is in a semi-enclosed furnace. Even if the barbecue grill overturns, the charcoal is not easy to fall and cause a fire. There is also a water box at the bottom to play a certain role in fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0016] Figure 1 This is a schematic diagram of the structure of the thermoelectric power generation unit of the thermoelectric power generation device specifically for barbecue grills in this application.
[0017] Figure 2 This is a structural diagram of the self-generating smokeless automatic barbecue grill for this application.
[0018] Figure 3 This is a structural diagram of the self-generating smokeless automatic barbecue grill from another angle.
[0019] Figure 4 This is a top view of the self-generating smokeless automatic barbecue grill of this application.
[0020] Figure 5 This is a side view of the self-generating smokeless automatic barbecue grill of this application.
[0021] Figure 6 This is a schematic diagram of the other side of the self-generating smokeless automatic barbecue grill of this application.
[0022] Figure 7 This is a partial enlarged view of the fire baffle and metal heat conducting plate of the self-generating smokeless automatic barbecue grill of this application.
[0023] Figure 8 This is a schematic diagram of the internal structure of the self-generating smokeless automatic barbecue grill for this application.
[0024] Figure 9 This is a schematic diagram of the internal structure of the self-generating smokeless automatic barbecue grill for this application.
[0025] Figure 10 This is a schematic diagram of the cross-sectional structure of the self-generating smokeless automatic barbecue grill of this application.
[0026] Figure 11 This is a schematic diagram of the cross-sectional structure of the self-generating smokeless automatic barbecue grill of this application.
[0027] Figure 12 Partially enlarged view of the large barbecue fork device of the self-generating smokeless automatic barbecue grill of this application.
[0028] Figure 13 This is a schematic diagram of the air flow of the self-generating smokeless automatic barbecue grill of this application.
[0029] Reference numerals:
[0030] Outer furnace body 1; inner furnace wall 2; charcoal cage 3; water box 4; barbecue skewer fixing plate 5; thermoelectric power generation device 6; barbecue skewer turning track 7; barbecue skewer 8; large barbecue fork device 9; support leg 10; fire baffle 11; protective cover 12; guide plate 13; heat insulation plate 14; pin 15; spring 16; gap 17; charcoal cage slide 31; cooling fan 61; thermoelectric power generation module 62; heat conducting metal plate 63; radiator 64; bolt 65; nut 66; spring 67; heat insulation sleeve 68; power switch 69; first motor 70; drive rod 71; hole slot 72; transmission frame 73; disc 74; eccentric shaft 75; long hole 76; pinion 81; fixing frame 91; limiting slot 92; fixing hole 93; support frame 94; guide tube 95; transmission shaft 96; coil spring 97; gear 98; barbecue fork 99; air 100; support plate 101. DETAILED DESCRIPTION
[0031] In order to solve the problems in the background technology, the present application has invented a self-generating smokeless automatic barbecue grill and a special temperature difference power generation device. The barbecue grill is an environmentally friendly smokeless self-generating automatic multi-functional barbecue grill. There is no need to manually turn the ingredients over during grilling. It also generates electricity by itself, is easy to use, and saves manpower.
[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0033] It should be noted that, in the description of this application, terms such as "inside", "outside", "up", "down", "left", and "right" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.
[0034] In order to give everyone a better experience of barbecue, the present invention uses a novel design and unique concept to solve the shortcomings of most barbecue grills on the market and invents the self-generating smokeless automatic barbecue grill of the present application.
[0035] like Figure 1 、 8 As shown in Figure 9, a temperature-difference power generation device 6 for a barbecue grill comprises two temperature-difference power generation units and a cooling fan 61. The temperature-difference power generation unit comprises a temperature-difference power generation module 62, a heat-conducting metal plate 63, and a heat sink 64. The temperature-difference power generation module 62 is sandwiched between the heat-conducting metal plate 63 and the heat sink 64. The heat-conducting metal plate 63 is positioned above the charcoal in the barbecue grill. The temperature-difference power generation module 63 of the first temperature-difference power generation unit is connected to the cooling fan 61 via a wire, while the temperature-difference power generation module of the second temperature-difference power generation unit is connected to the barbecue grill motor via a wire. After generating electricity, the first temperature-difference power generation unit drives the cooling fan 61 to rotate. The cooling fan dissipates heat from the radiator and also supplies air to the barbecue grill, facilitating charcoal combustion. The second temperature-difference power generation unit supplies power to the barbecue grill's power source motor, which automatically flips the skewers without human intervention.
[0036] like Figure 1 、 8 As shown in Figures 9 and 9, the heating surface of the thermoelectric power generation module 62 faces the metal heat conducting plate 63, and the heat dissipation surface faces the radiator 64. Thermal grease is applied between the heating surface and the metal heat conducting plate 63, and between the heat dissipation surface and the radiator. The metal heat conducting plate 63 and the radiator 64 are connected by bolts 65. The bolts 65 pass through the rear end of the radiator and are tightened with nuts 66. The screw rods of the bolts 65 that pass through the radiator 64 are covered with springs 67. A heat insulating sleeve 68 is provided between the bolts 65 and the metal heat conducting plate 63. The thermoelectric power generation module 62 can be a thermoelectric power generation sheet, the heat conducting metal sheet can be made of aluminum or copper, and the radiator can be a small radiator commonly used on the market, such as a heat pipe radiator or a metal fin radiator (the radiator can be made of any metal with good thermal efficiency).
[0037] like Figure 2-13As shown, a self-generating smokeless automatic barbecue grill comprises an outer furnace body 1, an inner furnace wall 2, a charcoal cage 3, a water box 4, a skewer fixing plate 5, and a thermoelectric generator 6. The thermoelectric generator 6 is mounted on one end of the outer furnace body 1, and the inner furnace wall 2 is mounted on the other end. A V-shaped guide plate 13 is fixed to the end of the inner furnace wall facing the thermoelectric generator module 62. A heat shield 14 is located between the V-shaped guide plate 13 and the inner furnace wall. The space enclosed by the guide plate 13 and the heat shield 14 serves as the power compartment. The inner furnace wall 2 has multiple ventilation holes, and a gap 17 is provided between the inner furnace wall 2 and the outer furnace body 1. The upper and lower ends of the inner furnace wall 2 are riveted to the outer furnace body. A protective cover 12 with heat dissipation holes is installed at the upper end of the outer furnace body 1, corresponding to the thermoelectric generator 6, to protect the thermoelectric generator. The inner furnace wall 2 is provided with charcoal cage slides 31 at both ends in the longitudinal direction (transverse direction in the figure), and the ends of the charcoal cage 3 slide in the charcoal cage slides 31. The outer furnace body 1 has a transverse long hole at the bottom end of the side away from the thermoelectric power generation device 6, and the water box 4 is inserted into the long hole from the outside. The water box 4 is placed under the inner furnace wall 2 and can be inserted or pulled out.
[0038] The outer furnace body 1 extends toward the inner furnace wall 2 to form a fire baffle 11. The charcoal cage 3 can be moved to the sides along the charcoal cage slide to the underside of the fire baffle. The fire baffle is preferably an integral structure with the outer furnace body, extending from both sides of the outer furnace body toward the center, securely covering the inner furnace wall and the charcoal cage. The skewer mounting plate is a square structure placed above the fire baffle. The skewer mounting plate has multiple small grooves, and the skewers are placed in the small grooves of the skewer mounting plate. Foldable support legs 10 are attached to both sides of the lower end of the outer furnace body 1. Support plates 101 are located on the outside of the support legs 10. When the support legs are folded, the support plates can support the barbecue grill.
[0039] like Figure 1 、 8As shown in Figure 9, the thermoelectric power generation device 6 includes two thermoelectric power generation units and a cooling fan 61. The thermoelectric power generation unit includes a thermoelectric power generation module 62, a heat-conducting metal plate 63, and a radiator 64. The thermoelectric power generation module 62 is sandwiched between the heat-conducting metal plate 63 and the radiator 64. One end of the heat-conducting metal plate 63 is set below the fire baffle 11, and the other end passes through the heat insulation plate 14 and is bolted to the thermoelectric power generation module 62. A certain gap is left between the fire baffle 11 and the heat-conducting metal plate 63. The pin 15 passes through the fire baffle and the heat-conducting metal plate. The two ends of the pin 15 are locked. A spring 16 is mounted on the pin 15 between the fire baffle 11 and the heat-conducting metal plate 63. Because the heat-conducting metal plate will deform slightly after heating, the diameter of the openings in the heat-conducting metal plate and the fire baffle is slightly larger than the diameter of the metal pin to allow for movement. The thermoelectric power generation module 62 of the first thermoelectric power generation unit is connected via wires to a cooling fan 61. The cooling fan 61 is mounted on the inner furnace wall 2. The outer furnace body 1 has cooling holes corresponding to the cooling fan 61. The thermoelectric power generation module of the second thermoelectric power generation unit is connected via wires to a power switch, which is connected to the first motor 70 and the second motor, respectively. The power switch 69 switches power to either the first or second motor.
[0040] The inner furnace wall is placed inside the outer furnace body, with a gap (approximately 10-30 mm wide) between the inner furnace wall and the outer furnace body. The gap between the inner furnace wall and the outer furnace body forms an air duct, and the fan blows air into the air duct while dissipating heat for the radiator. Because the inner furnace wall is connected to the guide plate 13 at one end facing the heat dissipation fan, it is more convenient for the heat dissipation fan to blow air 100 into the air duct. The upper and lower ends of the inner furnace wall extend outward to form a connecting edge connected to the outer furnace body, and the connecting edge of the inner furnace wall is riveted to the outer furnace body. A water box is placed between the lower side of the inner furnace wall and the outer furnace body. There is an opening on the side of the outer furnace body. The water box is inserted into the outer furnace body from the opening. After use, the water box is pulled out and the waste water is poured out.
[0041] like Figure 2 、 3As shown in Figures 4 and 5, the automatic barbecue grill of the present application also includes a skewer turning track 7, which is mounted on the skewer fixing plate and placed on the skewer fixing plate. (Support plates are fixed to the skewer fixing plate on both sides, and the skewer turning track is placed on the support plates.) A drive rod 71 is fixedly connected to the lower side of the skewer turning track 7 facing the cooling fan. A first motor drives the drive rod 71 through a transmission structure, which in turn drives the skewer turning track 7 to slide back and forth on the heat-conducting metal plate. The skewer turning track 7 has slots 72 on both sides (laterally), and a pinion 81 is fixed to one end of the skewer 8 and inserted into the slots 72. The skewer turning track 7 is square-shaped and is mounted on the outside of the skewer fixing plate 5, sliding on the support plates of the skewer fixing plate. The transmission device can have various structures to drive the skewer turning track to slide back and forth.
[0042] This application is attached Figure 10 The transmission structure in the illustrated embodiment includes a transmission frame 73, a disc 74, and an eccentric shaft 75. The transmission frame 73 is an inverted L-shaped transmission frame, with its lower end rotatably connected to a connecting frame. A first motor and a second motor are fixedly mounted to the connecting frame. The transmission frame 73 has a longitudinal slot 76 formed in its upper portion and a transverse slot formed in its upper end. The output shaft of the first motor is connected to the disc 74. An eccentric shaft 77 is fixed to the outer circumference of the disc 74 and inserted into the longitudinal slot 76 in the upper portion of the transmission frame 73. The drive rod 71 is inserted into the transverse slot in the upper end of the transmission frame. The output shaft of the first motor drives the disc and the eccentric shaft on the disc to rotate. The eccentric shaft drives the transmission frame to swing left and right. The transverse slot in the upper end of the transmission frame drives the drive rod and the skewer turning track to move left and right. The slot in the skewer turning track drives a pinion to rotate, and the skewers rotate with the pinion, automatically turning.
[0043] like Figure 2 、 3As shown in Figures 4, 10 and 11, the automatic barbecue grill also includes a large barbecue fork device 9, including a fixing frame 91, a limiting groove 92, a fixing hole 93, a support frame 94, a guide tube 95, a transmission shaft 96, a coil spring 97, a gear 98 and a barbecue fork 99. The fixing frame 91 is fixedly mounted on a protective cover with heat dissipation holes. The fixing frame 91 is provided with longitudinally arranged fixing holes 93 and a limiting groove 92. The guide tube 95 is fixed to the fixing frame 91. A longitudinal long hole is provided on the upper part of the guide tube 95. The lower end of the guide tube 95 is inserted under the protective cover. A transmission shaft 96 is provided in the guide tube 95. A coil spring 97 is sleeved on the transmission shaft 96. The lower end of the transmission shaft 96 is connected to the output end of the second motor through a coupling. A gear 98 is provided at the root of the barbecue fork 99. The gear 98 is engaged with the rotating spring 97. The barbecue fork 99 passes through the limiting groove 92 and is inserted into the hole of the support frame 94. Large spit grilling devices are used for roasting lamb legs or large pieces of meat. When roasting the leg of lamb, the gear at the base of the spit engages with the coil spring, and the base of the spit is locked into the retaining groove on the fixed frame, while the head of the spit is inserted into the hole of the support frame. A second motor drives the gear through the drive shaft and coil spring, which in turn drives the spit, achieving automatic flipping. When the leg of lamb is cooked, the gear at the base of the spit is removed from the coil spring and locked into the fixing hole of the fixed frame. The spit then passes through the retaining groove and is inserted into the hole of the support frame to secure it.
[0044] Specific embodiments of the self-generating smokeless automatic barbecue grill of this application:
[0045] The barbecue grill features a double-layered structure. Inside the outer shell, beneath a protective cover with heat dissipation holes on the left side, is a thermoelectric generator. This device comprises a thermoelectric generator module, a radiator, a cooling fan, a first motor, a second motor, a transmission mechanism that drives the rotating track for the skewers, and a mechanism that drives the large spit mechanism. Inside the right side of the outer shell, an inner wall is located. A gap forms between the inner wall and the outer shell, creating a cavity that serves as an air passage. The inner shell has ventilation holes. Air from the cooling fan enters the air passage through a V-shaped deflector and then enters the inner wall through ventilation holes in the inner wall. Inside the inner wall, slides are located on both sides, along which the charcoal cage is suspended and slides. A water tray is located at the bottom of the outer shell to catch any oil dripping from the food above the oven opening. On either side of the oven opening, flame baffles extend inward and upward from the outer shell. The charcoal cage on the slide inside the furnace mouth can slide to both sides and under the fire baffle. Because the charcoal cage is not under the food being grilled, the oil will not fall on the charcoal but directly into the water box, so no smoke will be generated.
[0046] The thermoelectric power generation device generates electricity to drive the first motor and the second motor. The first motor, the second motor, and the transmission structure that drives the rotating track of the barbecue skewers are placed in the power compartment. The first motor drives the barbecue skewers with slots on both sides of the oven mouth to reciprocate (sliding left and right in the figure) through the transmission structure. The small gear on the barbecue skewers is stuck in the slots of the barbecue skewers flipping track. The barbecue skewers flipping track drives the small gear to rotate, and then drives the barbecue skewers to rotate, realizing automatic flipping of the meat skewers. The second motor provides flipping power to the large barbecue skewers through the coil spring in the hollow guide tube. The second motor drives the transmission shaft and the coil spring to rotate. The gear passes through the longitudinal long hole on the guide tube and engages with the coil spring. The coil spring drives the gear at the root of the barbecue skewers to rotate, driving the barbecue skewers to rotate, so that large pieces of meat such as lamb legs on the barbecue skewers are automatically flipped.
[0047] The working principle of this self-generating smokeless automatic barbecue stove:
[0048] The thermoelectric power generation unit generates electricity using a thermoelectric module. The module has a heating surface on one side and a heat dissipation surface on the other. The heating surface contacts a metal heat conducting plate, while the heat dissipation surface contacts a metal heat sink. The metal heat conducting plate absorbs heat from the charcoal cage, transferring it along metal heat conducting strips to the heating surface of the thermoelectric module. This heat is then transferred from the module to the heat dissipation surface of the heat dissipation heat sink. The temperature difference between the two sides of the module generates an electric current. Wires connect the positive and negative terminals of the thermoelectric module to a cooling fan that cools the metal heat sink, generating thermoelectric power. This increases the temperature difference between the two ends of the module and improves power generation efficiency. After cooling the heat sink, the air from the cooling fan is blown into the cavity between the outer furnace body and the inner furnace wall. Ventilation holes in the inner furnace wall then add oxygen to the charcoal cage, increasing the temperature and pressure inside the furnace and ensuring more even heating of the food on the skewers at the entrance. The second thermoelectric power generation unit simultaneously uses electricity from its thermoelectric module to power the first and second motors. The first motor then generates power to power the skewer turning track, which moves repeatedly across the grill. The slots in the skewer turning track mesh with the pinion gears on the skewers, rotating the gears and turning the skewers, thus automatically turning the skewers. The second motor generates power to power the large skewer assembly, rotating the skewers and achieving turning. A power transfer switch switches power between the first and second motors.
[0049] Specific embodiments of the self-generating smokeless automatic barbecue grill of this application:
[0050] The overall length of the furnace is 570-600 mm, the height from the furnace bottom to the furnace mouth (the horizontal distance between the fire baffles on both sides) is 210 mm, and the air duct between the outer furnace body and the inner furnace wall is about 10-50 mm wide (can be 10, 30 or 50 mm wide) and 150 mm high. The length is consistent with the length of the furnace mouth. It can cover the entire carbon cage. The openings in the inner furnace wall are larger at 8 mm on the upper part and smaller at 6 mm on the lower part, and are evenly arranged. According to the convection principle, the temperature on the top of the carbon cage is higher, so the openings on the inner furnace wall are larger on the upper part than on the lower part. The size of the furnace mouth is 400 mm long and 150 mm wide. The gap between the fire baffle and the heat-conducting metal plate is 4-6 mm.
[0051] The furnace body is generally made of stainless steel or galvanized sheet. The radiator of the thermoelectric power generation module can be a heat pipe radiator. Ordinary materials such as aluminum or copper can be used. Of course, the heat pipe radiator is more efficient. The metal heat conducting strip on the heating surface of the power generation module can be made of metal with higher thermal conductivity, such as copper or aluminum.
[0052] The heating and cooling surfaces of the thermoelectric power generation module maintain a temperature of 60-150°C and an open-circuit voltage of 1-7.5V. The fan drive motor uses a model 370 DC micromotor with an operating voltage of 1-10V and a speed of 2000-9000 rpm. The first and second motors are model 500 DC micromotors with gearboxes, starting at 1V, operating at 2-6V, and outputting speeds of 20 rpm. The relationship between the thermoelectric power generation module, the fan motor, the first and second motors is variable. Depending on the burning temperature of the charcoal, the output power and voltage of the power generation module will also vary, as will the speed of the fan motor and the power drive motor. When red-hot charcoal is placed in the carbon cage, the temperature can reach 400-600°C. Heat is transferred to the hot end of the power generation module through the metal heat conducting strips (typically aluminum), resulting in some heat loss and a temperature range of 150-250°C. This allows the power generation module to achieve optimal efficiency. At this point, the fan motor and power drive motor are operating at full power. The fan blows heat through the charcoal cage through holes in the inner furnace wall, evenly distributing it to the furnace opening. The power motor, through a linkage mechanism, drives the skewers at 20 revolutions per minute, ensuring even heating and fragrant aroma. As the charcoal burns longer, its temperature drops, and the efficiency of the power generation module gradually decreases. The fan and drive motors also slow down, and the skewers' rotation speed also slows down accordingly, achieving automatic adjustment to the charcoal temperature.
[0053] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and does not deviate from the technical solution of the present invention, and designs a structure and implementation similar to the above embodiment without inventiveness based on the technical essence of the present invention, such design shall fall within the scope of protection of the present invention.
Claims
1. A temperature difference power generation device for a barbecue grill, characterized by: The device comprises two thermoelectric power generation units and a cooling fan. The thermoelectric power generation unit comprises a thermoelectric power generation module, a heat-conducting metal plate and a radiator. The thermoelectric power generation module is sandwiched between the heat-conducting metal plate and the radiator. The heat-conducting metal plate is arranged on the charcoal of the barbecue grill. The thermoelectric power generation module of the first thermoelectric power generation unit is connected to the cooling fan through a wire, and the thermoelectric power generation module of the second thermoelectric power generation unit is connected to the motor for the barbecue grill through a wire.
2. The temperature difference power generation device for barbecue grills according to claim 1, characterized in that: The heating surface of the thermoelectric power generation module faces the metal heat conducting plate, and the heat dissipation surface faces the radiator. Thermal grease is applied between the heating surface and the metal heat conducting plate and between the heat dissipation surface and the radiator. The metal heat conducting plate and the radiator are connected by bolts, and the bolts pass through the rear end of the radiator and are locked with nuts. A spring is sleeved on the screw of the bolt passing through the radiator part, and an insulating sleeve is sleeved between the bolt and the metal heat conducting plate.
3. A self-generating smokeless automatic barbecue grill, characterized by: The invention comprises an outer furnace body, an inner furnace wall, a charcoal cage, a water box, a barbecue skewer fixing plate and a temperature difference power generation device, wherein one end of the outer furnace body is the temperature difference power generation device, and the other end is the inner furnace wall. A V-shaped guide plate is fixed to the end of the inner furnace wall facing the temperature difference power generation module, and an insulation plate is provided between the V-shaped guide plate and the inner furnace wall. There are multiple ventilation holes on the inner furnace wall, and a gap is left between the inner furnace wall and the outer furnace body. The upper and lower ends of the inner furnace wall are riveted to the outer furnace body, and charcoal cage slides are provided at both ends of the inner furnace wall in the longitudinal direction, and the two ends of the charcoal cage slide in the slides. A horizontal long hole is provided at the bottom end of the side of the outer furnace body away from the temperature difference power generation device, and the water box is inserted into the long hole from the outside. The outer furnace body extends toward the center to form a fire baffle, and the barbecue skewer fixing plate is arranged above the fire baffle. The thermoelectric power generation device includes two thermoelectric power generation units and a cooling fan. The thermoelectric power generation unit includes a thermoelectric power generation module, a heat-conducting metal plate, and a radiator. The thermoelectric power generation module is sandwiched between the heat-conducting metal plate and the radiator. One end of the heat-conducting metal plate is arranged under the fire baffle, and the other end passes through the heat insulation plate and is bolted to the thermoelectric power generation module. The thermoelectric power generation module of the first thermoelectric power generation unit is connected to the cooling fan through a wire. The cooling fan is installed on the inner furnace wall, and a heat dissipation hole is opened in the outer furnace body corresponding to the position of the heat dissipation fan. The thermoelectric power generation module of the second thermoelectric power generation unit is connected to the power switching switch through a wire. The power switching switch is connected to the first motor and the second motor respectively. A protective cover with heat dissipation holes is provided at the upper end of the outer furnace body corresponding to the position of the thermoelectric power generation device.
4. The self-generating smokeless automatic barbecue grill according to claim 3, characterized in that: There is a certain gap between the fire baffle and the heat conducting metal plate. The pin passes through the fire baffle and the heat conducting metal plate. Both ends of the pin are locked. A spring is sleeved on the pin between the fire baffle and the heat conducting metal plate.
5. The automatic barbecue grill with a temperature difference power generation device according to claim 3, characterized in that: The skewer flipping track is also included. The skewer flipping track is sleeved on the skewer fixing plate. The driving rod is fixedly connected to the lower side of the skewer flipping track facing the cooling fan. The first motor drives the driving rod through the transmission structure and then drives the skewer flipping track to slide back and forth on the heat-conducting metal plate. The skewer flipping track has holes and grooves on both sides. A small gear is fixedly installed on one end of the skewer, and the small gear is inserted into the hole and groove.
6. The automatic barbecue grill with a temperature difference power generation device according to claim 3 or 5, characterized in that: It also includes a large barbecue fork device including a fixing frame, a limiting groove, a fixing hole, a support frame, a guide tube, a transmission shaft, a coil spring, a gear and a barbecue fork. The fixing frame is fixedly mounted on a protective cover with heat dissipation holes. The fixing frame is provided with longitudinally arranged fixing holes and limiting grooves. The guide tube is fixed to the fixing frame. A longitudinal long hole is provided on the upper part of the guide tube. The lower end of the guide tube is inserted under the protective cover. A transmission shaft is provided in the guide tube. A coil spring is sleeved on the transmission shaft. The lower end of the transmission shaft is connected to the output end of the second motor through a coupling. A gear is provided at the root of the barbecue fork. The gear is engaged with the rotating spring. The barbecue fork passes through the limiting groove and is inserted into the hole of the support frame.
7. The automatic barbecue grill with a temperature difference power generation device according to claim 3, characterized in that: A gap of 10-50 mm is left between the inner furnace wall and the outer furnace body.