Abstract: A semiconductor device includes a semiconductor substrate, a first gate oxide layer, and a first source/drain doped region. The first gate oxide layer is disposed on the semiconductor substrate, and the first gate oxide layer includes a main portion and an edge portion having a sloping sidewall. The first source/drain doped region is disposed in the semiconductor substrate and located adjacent to the edge portion of the first gate oxide layer. The first source/drain doped region includes a first portion and a second portion. The first portion is disposed under the edge portion of the first gate oxide layer in a vertical direction, and the second portion is connected with the first portion.

Abstract: A containing apparatus for eliminating bridging has a body and a pulse module. The body has a chamber formed inside. The pulse module is connected with the body, and has at least one nozzle and an air supply. The at least one nozzle is connected to the body. The air supply is connected to the at least one nozzle, and is able to pulse gas into the chamber of the body. By utilizing air pulse to collapse a piled arch structure of contents, bridging in the chamber may be eliminated.

Abstract: An automatic ash discharge device for a burner has a furnace base, a duct set, and a discharge set. The furnace base has a combustion chamber, a mounting opening, a discharge mouth, two guiding faces, and multiple inlet holes. The combustion chamber is formed in the furnace base. The guiding faces are formed aslant in the furnace base. The inlet holes are formed through the guiding faces. The duct set is connected to the furnace base and has two casings and a blower. The casings are mounted on the furnace base respectively corresponding to the guiding faces and communicate with the combustion chamber. The blower communicates with the casings. The discharge set is connected to the furnace base and has a receiving tank connected to the furnace base and communicating with the combustion chamber, and a discharge shaft rotatably mounted in the receiving tank.

Abstract: An ash-collecting and exhaust device for a grain dryer has a body, a fan unit, and a driving unit. The body is a hollow barrel, and has an air inlet, an air outlet, and an internal surface being divergent adjacent to the air inlet. The fan unit is rotatably mounted in the body to enable external air to flow into the body via the air inlet and flow out of the body via the air outlet, and has an external surface being obliquely divergent to form an oblique passage between the body and the fan unit. The driving unit is securely mounted on the body, is connected to the fan unit to enable the fan unit to rotate relative to the body to guide the external air flowing into the body.

Abstract: A multistage boiler heat exchange apparatus has a combustion furnace and at least one boiler set. The combustion furnace is used to produce a heat source and has a furnace base and a hot-air passage. The at least one boiler set is connected to the combustion furnace, and each has a preheater and a boiler. The preheater is deposited adjacent to the combustion furnace, and is connected to and communicates with the hot-air passage to adjust temperature of the heat source that enters the preheater. The boiler is an uprightly-deposited cylinder, is connected to the preheater, and has a conducting pipe and an exchange tube. The conducting pipe is deposited on and communicates with the boiler to enable the heat source to enter the boiler. The exchange tube is deposited in the boiler and has an exchange medium to exchange heat with the heat source in the boiler.

Abstract: A multi-pipe-switching heat exchange apparatus has a heating module, an auxiliary module, a buffering module, and an operation module. The heating module has at least one heating boiler. The auxiliary module is deposited beside the heating module and has at least one spare boiler. The buffering module is connected to and communicates with the heating module and the auxiliary module, and has a buffering body connected to and communicating with the at least one heating boiler and the at least one spare boiler, a first pipeline set deposited between the buffering body and the heating module, and a second pipeline set deposited between the buffering body and the auxiliary module. The operation module is connected to and communicates with the buffering module and has an operation end and a third pipeline set connected to and communicating with the buffering body and the operation end.

Abstract: A multistage boiler heat exchange apparatus has a combustion furnace and at least one boiler set. The combustion furnace is used to produce a heat source and has a furnace base and a hot-air passage. The at least one boiler set is connected to the combustion furnace, and each has a preheater and a boiler. The preheater is deposited adjacent to the combustion furnace, and is connected to and communicates with the hot-air passage to adjust temperature of the heat source that enters the preheater. The boiler is an uprightly-deposited cylinder, is connected to the preheater, and has a conducting pipe and an exchange tube. The conducting pipe is deposited on and communicates with the boiler to enable the heat source to enter the boiler. The exchange tube is deposited in the boiler and has an exchange medium to exchange heat with the heat source in the boiler.

Abstract: An automatic drying method for a grain dryer has a preparing step, a parameter-setting step, and a multi-stage drying step. The preparing step includes preparing an automatic drying device. The automatic drying device has a body, at least two drying sections, and a detecting module. Each drying section has a hot air inlet, a net-layer base, and at least one exhaust pipe. The detecting module is connected to the body and has at least two moisture meters, at least two temperature sensors, a rotary unit, and a processing unit. The parameter-setting step comprises setting a temperature value and a moisture content of each drying section. The multi-stage drying step comprises conveying pre-dried grains into each drying section, importing hot air into each drying section to dry the pre-dried grains, and adjusting an operating speed of the rotary unit and the temperature of the hot air.

Abstract: An ash-collecting and exhaust device for a grain dryer has a body, a fan unit, and a driving unit. The body is a hollow barrel, and has an air inlet, an air outlet, and an internal surface being divergent adjacent to the air inlet. The fan unit is rotatably mounted in the body to enable external air to flow into the body via the air inlet and flow out of the body via the air outlet, and has an external surface being obliquely divergent to form an oblique passage between the body and the fan unit. The driving unit is securely mounted on the body, is connected to the fan unit to enable the fan unit to rotate relative to the body to guide the external air flowing into the body.

Abstract: An automatic ash discharge device for a burner has a furnace base, a duct set, and a discharge set. The furnace base has a combustion chamber, a mounting opening, a discharge mouth, two guiding faces, and multiple inlet holes. The combustion chamber is formed in the furnace base. The guiding faces are formed aslant in the furnace base. The inlet holes are formed through the guiding faces. The duct set is connected to the furnace base and has two bellows and a blower. The bellows are mounted on the furnace base respectively corresponding to the guiding faces and communicate with the combustion chamber. The blower communicates with the bellows. The discharge set is connected to the furnace base and has a receiving tank connected to the furnace base and communicating with the combustion chamber, and a discharge shaft rotatably mounted in the receiving tank.

Abstract: A method for controlling supply of heat energy from a furnace to multiple dryers includes: determining a preset temperature, a preset humidity and a drying time for each of the dryers; calculating heat energy demand of each of the dryers according to the preset temperature, the preset humidity and the drying time of a respective one of the dryers, and calculating a fuel amount to be supplied to the furnace, and a volume of hot air to be supplied to each of the dryers; detecting a drying temperature in each of the dryers; and for each of the dryers, comparing the drying temperature and the preset temperature of the dryer, increasing the volume of hot air when the drying temperature is lower than the preset temperature, and decreasing the volume of hot air when the drying temperature is higher than the preset temperature.

Abstract: A stirring control method is adapted for a combustion apparatus which includes a furnace for burning fuel material, and a stirring member rotatably disposed in the furnace for stirring the fuel material and ash resulting from burning of the fuel material. The stirring control method includes: controlling rotation of the stirring member at an initial rotational speed; determining whether a height of the fuel material reaches an upper detection range; generating an indication when the height of the fuel material reaches the upper detection range; determining whether the height of the fuel material reaches a lower detection range when the height of the fuel material does not reach the upper detection range; and controlling rotation of the stirring member at a rotational speed higher than the initial rotational speed when the height of the fuel material reaches the lower detection range.

Abstract: A method for controlling supply of heat energy from a furnace to multiple dryers includes: determining a preset temperature, a preset humidity and a drying time for each of the dryers; calculating heat energy demand of each of the dryers according to the preset temperature, the preset humidity and the drying time of a respective one of the dryers, and calculating a fuel amount to be supplied to the furnace, and a volume of hot air to be supplied to each of the dryers; detecting a drying temperature in each of the dryers; and for each of the dryers, comparing the drying temperature and the preset temperature of the dryer, increasing the volume of hot air when the drying temperature is lower than the preset temperature, and decreasing the volume of hot air when the drying temperature is higher than the preset temperature.

Abstract: A stirring control method is adapted for a combustion apparatus which includes a furnace for burning fuel material, and a stirring member rotatably disposed in the furnace for stirring the fuel material and ash resulting from burning of the fuel material. The stirring control method includes: controlling rotation of the stirring member at an initial rotational speed; determining whether a height of the fuel material reaches an upper detection range; generating an indication when the height of the fuel material reaches the upper detection range; determining whether the height of the fuel material reaches a lower detection range when the height of the fuel material does not reach the upper detection range; and controlling rotation of the stirring member at a rotational speed higher than the initial rotational speed when the height of the fuel material reaches the lower detection range.

Abstract: A furnace includes: a furnace housing; a perforated tray mounted in the furnace housing; and a stirring rod disposed rotatably on the perforated tray. The stirring rod has top and bottom ends, two opposite lateral ends, a middle portion, and opposite first and second portions, each of which extends from the middle portion to a respective one of the lateral ends. Each of the first and second portions has an inclined face that extends between the top and bottom ends of the stirring rod from the respective one of the lateral ends toward the middle portion of the stirring rod, that is inclined relative to the perforated tray, and that faces toward the perforated tray.

Abstract: A furnace includes: a furnace housing; a perforated tray mounted in the furnace housing; and a stirring rod disposed rotatably on the perforated tray. The stirring rod has top and bottom ends, two opposite lateral ends, a middle portion, and opposite first and second portions, each of which extends from the middle portion to a respective one of the lateral ends. Each of the first and second portions has an inclined face that extends between the top and bottom ends of the stirring rod from the respective one of the lateral ends toward the middle portion of the stirring rod, that is inclined relative to the perforated tray, and that faces toward the perforated tray.

Abstract: A furnace includes: a furnace housing defining a combustion chamber therein, the combustion chamber having a round cross-section, the furnace housing being formed with at least two air inlets that are in fluid communication with the combustion chamber and that are angularly displaced from each other; and an air pipeline including at least two branch pipes, each of which is connected to a respective one of the air inlets of the furnace housing and each of which extends in a tangential direction relative to the cross-section of the combustion chamber.

Abstract: A furnace includes: a furnace housing defining a combustion chamber therein and having a top end section that is provided with an emergent stack which defines a gas-releasing channel in fluid communication with said combustion chamber; and a safety valve mounted in the gas-releasing channel and including a shaft that is secured to the emergent stack, and opposite first and second covering plates that are pivoted to the shaft so as to be rotatable relative to the shaft for closing and opening the gas-releasing channel.

Abstract: A combustion system includes: a furnace housing; a heat exchanger including a heat exchanger housing and a tube-bundled structure that has a plurality of exhaust tubes, upper and lower plates, and an end cap, top ends of the exhaust tubes being fixed to the upper plate, bottom ends of the exhaust tubes being fixed to the lower plate, the upper plate being fixed to a top end of the heat exchanger housing, the exhaust tubes being thermally expandable in a downward direction; and a manifold interconnecting a gas outlet of the furnace housing and a gas inlet of the heat exchanger housing.

Abstract: A feed hopper system includes: a hopper defining a chamber, the chamber having a lower portion; a stirring member; and a rotary feeding member disposed below the stirring member, mounted rotatably in the lower portion of the chamber of the hopper, and including a rotor that has first and second axial end portions. The rotary feeding member further includes a plurality of angularly spaced apart first blades that radiate from the first axial end portion of the rotor, and a plurality of angularly spaced apart second blades that radiate from the second axial end portion of the rotor. The first and second blades are alternately disposed.