Precise energy-saving and temperature control system for pellet grills

A precise energy-saving and temperature control system for pellet grills, comprising:

• a grill body, with a working chamber for placing an object to be heated and a combustion chamber in thermal exchange connection with the working chamber formed inside;
• a material supply mechanism arranged on an outer side of the grill body and connected to the combustion chamber for delivering pellet fuel from an exterior into the combustion chamber, the material supply mechanism comprising a first driving component for driving the pellet fuel;
• an oxygen supply mechanism for providing adjustable combustion-supporting air to a combustion zone;
• a burner arranged in the combustion chamber for carrying and combusting the pellet fuel delivered by the material supply mechanism;
• an adjusting mechanism, comprising a second driving component and an adjusting component connected to the burner, the adjusting component being configured to change a position of the burner relative to the combustion chamber under a drive of the second driving component, thereby altering position distribution of combustion flames within the combustion chamber;
• a temperature detection mechanism, comprising at least one temperature sensor for detecting an in-grill temperature;
• and
• a controller electrically connected to the temperature detection mechanism, the first driving component and the second driving component, the controller being configured to control the first driving component to adjust a supply amount of the pellet fuel and/or control the second driving component to adjust the position of the burner based on a deviation between the in-grill temperature detected by the at least one temperature sensor and a preset target temperature, so that the in-grill temperature approaches and remains near the target temperature;
• the material supply mechanism comprises a material bin for storing the pellet fuel and a feeding channel extending from the material bin to the combustion chamber;
• and
• the first driving component is a first motor arranged in the feeding channel, an output end of the first motor is provided with a spiral delivering component for pushing the pellet fuel along the feeding channel to the burner under a drive of the first motor;
• wherein the oxygen supply mechanism comprises a fan and an oxygen supply pipe connected to the combustion chamber, an air outlet end of the fan directs combustion-supporting air to the burner through the oxygen supply pipe, and the controller is electrically connected to the fan;
• and
• the controller is configured to adjust a rotational speed and a working cycle of the fan based on changes in the in-grill temperature, thereby jointly controlling a combustion intensity in coordination with the supply amount of the pellet fuel;
• wherein the second driving component is a second motor, and the adjusting component comprises a rotating member connected to an output end of the second motor, a speed reduction transmission mechanism meshing with the rotating member and a moving member in screw-thread fit with the speed reduction transmission mechanism;
• and
• one end of the burner is hinged to an inner wall of the combustion chamber, and another end of the burner is hinged to the moving member, the second motor drives the speed reduction transmission mechanism to move the moving member along a height direction, thereby enabling the burner to rotate around a hinge joint thereof and change a height and an inclination angle of the burner relative to the combustion chamber.