74 results about "Hot air engine" patented technology

The invention discloses an efficient hot-air engine which comprises a gas compressor, a heater, a detonation engine and a cooler, wherein the gas compressor, the heater, the detonation engine and the cooler are respectively provided with a gas working medium inlet and a gas working medium outlet; the gas working medium outlet of the gas compressor is communicated with the gas working medium inlet of the heater, the gas working medium outlet of the heater is communicated with the gas working medium inlet of the detonation engine, the gas working medium outlet of the detonation engine is communicated with the gas working medium inlet of the cooler, and the gas working medium outlet of the cooler is communicated with the gas working medium inlet of the gas compressor, so that a single power unit mode closed channel is formed, and the single power unit mode closed channel is filled with gas working mediums; and the detonation engine is used for outputting power or circuitously outputting power to the gas compressor, and the detonation engine is directly or indirectly connected with a power output shaft. The efficient hot-air engine provided by the invention has the advantages of simple structure, high efficiency and low noise.

The invention relates to a self-cooling backheating movable cylinder fuel-air engine and Stirling engine. The engine comprises a crankshaft, a connecting rod component, a pipeline, a hydraulic tappet, a cylinder head, a piston ring, a piston, a movable cylinder, a middle cylinder, an outer cylinder, a sensor, a valve component, an electric control hydraulic valve, a nozzle, a high-pressure electronic pump, an electric flow valve, an exhaust gas recirculation system, a booster, a power machine, a valve, a turbine, a compressor and a cooler, and is characterized in that: two internal combustion engines, namely a heat release engine and a heat absorption engine consist of the movable cylinder, the piston fixed in the movable cylinder and the middle cylinder outside the movable cylinder; the engine has a compact structure and is convenient to assemble and maintain; the heat absorption engine absorbs heat from the periphery of the heat release engine and an exhaust gas regenerator to do work and reduce temperature, so that the cylinder temperature is appropriate; a cylinder cooling system is saved; the heat is prevented from being taken away by cooling, exhaust heat is recovered outside, the heat is absorbed inside for doing work and self-cooling, most of consumed heat is recycled, and the heat efficiency of the whole engine is obviously improved; and the engine also can be taken as an air engine, is energy-saving, environmental-friendly, high-efficiency and ideal and can be widely applied to various fields.

This invention discloses one micro hot air engine, which comprises heater, regenerator, cooling device, curve shaft, machine shell, dynamic piston and pneumatic piston and one sealed curve shaft, wherein, the said pneumatic piston and dynamic piston are set by upper and down axis; down end of pneumatic piston is connected with piston bar through central hole of dynamic piston; cooling device is of ring cylinder structure with its top end connected to heater and down end connected to shell and with matching piston; the cooling hole and heater inner chamber form pneumatic cylinder with certain match gap.

The invention discloses an efficient hot-air engine, which comprises an air compressor, a heater, an explosion-exhaust engine and a cooler. Gas medium inlets and gas medium outlets are arranged on the air compressor, the heater, the explosion-exhaust engine and the cooler respectively, the gas medium outlet of the air compressor is communicated with the gas medium inlet of the heater, the gas medium outlet of the heater is communicated with the gas medium inlet of the explosion-exhaust engine, the gas medium outlet of the explosion-exhaust engine is communicated with the gas medium inlet of the cooler, and the gas medium outlet of the cooler is communicated with the gas medium inlet of the air compressor, so that a single-power unit joint closed channel is formed in the communicated manner. Gas media are filled into the single-power unit joint closed channel, the explosion-exhaust engine outputs power for the air compressor or outputs power in a tortuous manner, and the explosion-exhaust engine is directly or indirectly connected with a power output shaft. The efficient hot-air engine is simple in structure, high in efficiency and low in noise.

The invention discloses a liquid piston hot air engine. The liquid piston hot air engine comprises a first air cylinder, a second air cylinder, a heater, a heat regenerator, a cooler and a power output pipe, wherein liquid pistons communicated with the bottoms are arranged inside the first air cylinder and the second air cylinder; the heater, the heat regenerator and the cooler are sequentially connected; the first air cylinder is connected with the heater; the second air cylinder is connected with the cooler; the cooler comprises an air-cooling pipeline exposed in air, a water-cooling pipeline connected with the air-cooling pipeline and a water jacket covering the water-cooling pipeline. The liquid piston hot air engine provided by the invention has the advantages of good cooling effect and stable working property.

The invention discloses an ammonia carbon-free synthesis system by means of nuclear energy and a method thereof .The system comprises a high-temperature gas cooled reactor, a steam generator, an overheater, a solid oxide electrolytic cell, a Stirling hot air engine, a heater, a mixer, a deep cooling air separation unit, a low-pressure compressor, an intercooler, a high-pressure compressor, a preheater, an ammonia synthesis tower, an ammonia condenser, an ammonia separator, a water supply pipeline and an air pipeline .The nuclear energy serves as fuel, air and water serve as raw materials, and the ammonia synthesis system which does not depend on fossil energy or generate pollutants is achieved jointly through the high-temperature gas cooled reactor in cooperation with a steam electrolysis method and a deep cooling air separation method .Waste heat of high-temperature hydrogen generated through the steam electrolysis method is used for driving the Stirling hot air engine to drive the compressors to act, low-temperature nitrogen of the deep cooling air separation unit serves as a cooling medium of the ammonia condenser and the intercooler, the advantages of comprehensively utilizing energy, saving water, simplifying the technological process and the like are achieved, and therefore high economic and environment-friendly value and good application prospects are achieved .

The invention discloses a heat source working hot air engine, which comprises a gas working mechanism, a gas compression mechanism, a cylinder piston mechanism, an inner combustion chamber, a work substance outlet and a cooler, the gas compression mechanism, the gas working mechanism and the cylinder piston mechanism are sequentially communicated via a communication channel to form a work substance closed loop; the cooler is arranged on the work substance closed loop which takes the work substance of the gas working mechanism as the upstream unit and takes the cylinder piston mechanism as the downstream unit; the inner combustion chamber is arranged in the work substance closed loop which takes the work substance of the gas working mechanism as the upstream unit and takes the cylinder piston mechanism as the downstream unit. The heat source working hot air engine has a simple structure, and is high in efficiency, low in cost and long in service life.

A driving system of hot air engine (HAE) with eight cylinders is prepared as laying right and left crankshafts (RALC) in parallel way and connecting them to output shaft by gear driving mechanism to form U form driving structure, setting four crank throws on each of RALC and using adjacent four crank throws at right and left ends of RALC to a driving unit for one HAE with four cylinders, applying 90 degree and 180 degree as well as 270 degree as phase difference of four crank throws and applying 90 degree of erection phase difference for RALC, setting gear driving mechanism between RALC and using herringbone gear as said gear.

The invention relates to a Stirling engine, and belongs to the technical field of hot air engine utilization. The inclined disc type Stirling engine comprises an engine shell, an air cylinder, a piston, a piston rod, an output spindle and an inclined disc transmission device used for converting liner motion of the piston into rotation motion of the output spindle; the inclined disc transmission device comprises a sliding cylinder and an inclined disc mechanism; a sliding block is arranged at one end of the piston rod, and can vertically move in the sliding cylinder, the inclined disc mechanism comprises an inclined disc and an inclined shaft sleeve arranged on the output spindle in a sleeving manner, the inclined disc is arranged on the inclined shaft sleeve through a bearing, and the center line of the inclined shaft sleeve and the center line of the output spindle are crossed to form an included angle from 10 degrees to 15 degrees. The piston rod is not directly connected with the inclined disc, the piston rod is free of circumferential action force generated by rotation of the output spindle, the engine enables an output transmission device to be simpler only through one bearing, friction losses of the air cylinder and the piston can be reduced, and the service life can be prolonged.

A heat engine consists of one to four groups of cylinder bodies and corresponding pistons, a crank shaft, a heater, a regenerator and a cooler, which can be of gas distribution type or of double acting type, wherein, the piston and the crank shaft inside the cylinder body are a two-link and combined locking-releasing mechanism; the clearance between the piston and the sidewall of the cylinder body is provided with pressure gas for forming a thin gas layer, thus being easy to work in relatively low thermal parameters.

The invention discloses a hot air engine with an internal heater. The hot air engine comprises a working box, the working box is internally provided with an air pushing cavity, the rear end wall of the air pushing cavity is internally provided with a linkage space, the left end wall of the air pushing cavity is internally provided with an expansion cavity the right end wall of which is communicated with the air pushing cavity, the upper end wall of the expansion cavity is internally provided with a liquid exchange cavity, the left end wall of the liquid exchange cavity is internally provided with a switching groove the rear end wall of which is communicated with the linkage space, the left end wall of the switching groove is internally provided with a sealing groove, and the left end wallof the sealing groove is internally provided with a cooling cavity. The hot air engine is simple in structure and convenient to operate, the alternating speed of cooling liquid can be adjusted according to different types of heat generation, the cooling liquid does not need to be circularly cooled all the time, the cooling function of the cooling liquid can be fully utilized, and a lot of energy is saved.

A method for improving performance of a free-piston engine, also comprising various other engines such as Stirling Engines, Ericsson engines, Stirling cryocoolers and other external combustion or hot air engines. The improvement is the inclusion of a means, such as a valve or set of valves interposed in a passageway, to contain the working fluid (gas) in the hot or expansion work area so that increased work can occur; or the improvement is by means of piston blocking a port to the working gas passageway such that working gas is contained in the work space such that increased work can occur. The improvement reduces or ideally eliminates free flow of fluid until such time in the cycle where valve or port opens and allows the fluid to flow to the passageway from one space to the other.

The invention discloses an improved miniature hot air engine, comprising a heater and an air cylinder which is arranged on a crank case, wherein a power piston in the air cylinder is connected with a crank through a connecting rod, an air distribution piston is installed in an air distribution cylinder in a matching manner, the heater is connected with the air distribution cylinder into a whole, a metal-shell cylindrical air distribution piston of which the external end surface is provided with an air vent is installed in the air distribution cylinder in a clearance fit manner, a piston rod fixedly connected on the external end face of the metal-shell cylindrical air distribution piston extends out of the air distribution cylinder and is in movable fit with a fit through hole arranged on the external end face of the air distribution cylinder in a sealing manner, the other end of the connecting rod hinged with the piston rod is hinged with one end of a V-shaped lever hinged on a fixed hinged point, the connecting rod hinged with the other end of the V-shaped lever is connected with the crank, an airway tube is connected with an air distribution hole arranged on the air distribution cylinder, and the other end of the airway tube is connected with an air cylinder cover air distribution hole of the air cylinder. The improved miniature hot air engine has simple structure, low manufacturing cost, low requirement condition on heat source for heating and wide applicable fuel range, and can use fire coal, crop straws and other solid fuels besides fluid fuel.

A hot-air engine (10) includes a compressor (12), a heating chamber (14), a rotary displacement type working engine (16) and a drive means (22). The compressor (12) has an inlet (12a) and an outlet (12b). The heating chamber (14) has an inlet (14a), in fluid communication with the outlet (12b) of the compressor (12), and an outlet (14b). The working engine (16) has an inlet (16a), in fluid communication with the outlet (14b) of the heating chamber (14), and an output shaft (16a). The drive means (22) connects the working engine (16) to the compressor (12) such that operation of the working engine (16) causes operation of the compressor (12).

The invention discloses an improvement of Stirling engines, and particularly relates to a hot-air engine with an air moving piston internally provided with a regenerator. The hot-air engine comprises an expansion chamber with a heater and a compression chamber with a cooler, the expansion chamber is communicated with the compression chamber, and the air moving piston for separating the two chambers is arranged between the expansion chamber and the compression chamber and is internally provided with the regenerator. After the structure is adopted, the regenerator is arranged in the air moving piston, working medium air expands in the heating chamber and generates no impact force on the regenerator in the process of pushing the power piston to do work, enough energy is ensured, heating energy is used fully, and therefore efficiency of the hot-air engine is improved. In addition, the hot-air engine is compact in structural design and simple in manufacturing process, and cost is reduced.

A reversible hot air engine system having operating modes for both engine and heat pump operation features a piston located in a piston cylinder that is located on a frame. The system features a displacer located in a displacer chamber that is horizontally located at a frame bottom. A rod first end is pivotally located on a piston second end. A rod second end is pivotally located on a displacer middle via a hinge. A rod housing is fluidly connected to the displacer chamber and the piston cylinder. The system features a flywheel located at a frame top. The system features, a crank having a wheel eccentrically and pivotally connected to a crank rod first end. A crank rod second end is pivotally located to a piston first end. The system features a heat source applied to a chamber end.

The invention discloses a three-valve hot-air engine which includes a cylinder piston mechanism. An air cylinder of the cylinder piston mechanism is provided with an air inlet and a reciprocating flow mouth. A corresponding inlet valve is arranged at the position of the air inlet. The three-valve hot-air engine further includes a subsidiary cylinder piston mechanism. The cylinder of the subsidiary cylinder piston mechanism is provided with a subsidiary reciprocating flow mouth and an exhaust air outlet, and a corresponding exhaust-valve is arranged at the position of the exhaust air outlet. The reciprocating flow mouth is communicated with the subsidiary reciprocating flow mouth through a reciprocating communicating channel. A combustion case is arranged inside the cylinder of the cylinder piston mechanism and / or inside the reciprocating communicating channel and / or inside a channel communicated with the air inlet. The three-valve hot-air engine achieves further use of the heat in working medium after working again for the combustion explosion so as to enable the thermal efficiency of the engine to be improved, and has the advantages of being beneficial for saving energy, simple in structure, strong in practicability, and broad in application prospect.

The invention discloses an efficient hot air engine. The efficient hot air engine comprises an expansion cavity with a heater and a compression cavity with a cooler. The two cavities are connected and communicated through a heat regenerator. A first valve device is arranged on a channel between the heater and the expansion cavity. A second valve device is arranged on a channel between the cooler and the compression cavity. The first valve device can close or open the channel between the heater and the expansion cavity. The second valve device can close or open the channel between the cooler and the compression cavity. After the structure is adopted, during heating expansion at the heating end, the cooling end is closed; otherwise, during cooling condensation at the cooling end, the other heating end is closed, heating energy is sufficiently utilized, and therefore the efficiency of the hot air engine is improved.