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External heat supply engine built around parson's oscillating piston engine drive Invention relates to external heat supply engines. This engine comprises working piston and displacer pistons in different cylinders. Output shaft incorporates the crank articulated via con-rod with working piston. Oscillating sleeve with shaft fitted therein are pivoted inside said housing on one axle. Both sleeve and shaft are equipped with cranks articulated via con-rods with displacer pistons. In-cylinder spaces above displacer pistons are hot chambers. In-cylinder spaces under displacer pistons are cold chambers. Working medium is fed from hot chambers into cold chambers via heaters, regenerators and coolers. Cold chambers are communicated via working medium lines with appropriate above-piston and under-piston chambers of the cylinder with working piston. Engine runs with phase shift between working piston and displacer piston. |
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Rotary internal combustion engine Proposed engine comprises rotor, vanes, at least, two housings, seals and two sections: hot and cold. Rotors of said sections are rigidly fitted on common shaft. Hot section rotor is longer than that in cold section. Cold section vane operating area and chamber volume are larger than those in hot sections. Engine comprises cold section inlet, cold section outlet, got section inlet and hot section outlet. Hot and cold section chambers are communicated via two tubes, one extending through cooling chamber and another one extending through heating chamber. Both said tubes cross regeneration chamber. Valve is arranged on line extending from regeneration chamber to cold section. Vane parts are located on opposite sides of rotational axis. Every vane is completely extended and fixed relative to rotating rotor, at the moment when distance between opposite walls equals vane length. |
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Power plant with opposed stirling engine Power plant with opposed Stirling engine includes heater and cooler. Heater comprises together with a piston a hot cavity. Cooler comprises together with a piston a cold cavity. Hot cavity is connected by means of regenerator to cold cavity. Four tight capsules with hot and cold cavities are introduced to power plant. Pistons of hot and cold cavities of each capsule are connected by means of stocks to toothed racks fixed on them and engaged with rotors of combined electric machines. Hot cavity of the first capsule is connected to cold cavity of the second capsule via the pipeline in series connecting heater, regenerator and cooler. Hot cavity of the second capsule is connected to cold cavity of the third capsule via the pipeline in series connecting heater, regenerator and cooler. Hot cavity of the third capsule is connected to cold cavity of the fourth capsule via the pipeline in series connecting heater, regenerator and cooler. Hot cavity of the fourth capsule is connected to cold cavity of the first capsule via the pipeline in series connecting heater, regenerator and cooler. Inner space of capsules is filled with gas identical to gas in working cavities, the pressure of which is equal to average pressure of working medium in thermodynamic cycle. |
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Generation method of mechanical (electric) power is performed at thermal power plants (TPP), boiler houses, at transport power plants, and plants for combustion of associated petroleum gas and domestic waste. Stirling engine uses for its operation either heat secondary power resources or heat of geothermal sources or solar energy or heat of burning fuel flame. Heat is supplied directly to heater, cylinders with working medium by means of taps or from gas duct or from steam pipeline or from water pipeline, by means of heat pipes (HP), heat accumulators (HA). Spiral shape of tubes of heater, regenerator and cooler of Stirling engine is used. Cooling machine is used for cooling Stirling engine with liquid air. At TPP and boiler houses there used is Stirling engine and generator, which directly receive heat of the burning fuel flame from common combustion chamber for their operation. Stirling engine is used as the main one at automobile, railroad, aviation, and water transport. |
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Invention relates to engines running by expanding and compressing the working gas heated in one or several continuously communicating chambers, for example, of the Stirling engines. The external heating engine incorporates the hot group crankshaft and the cold group crankshaft, a group of packages of hot cylinders with pistons and the mating group of con rods, a transmission, a fuel pump, a combustion chamber, a compressor feeding the air into the combustion chamber and a heat exchanger. The engine contains also a group of pipes connecting, by pairs, the packages of the hot and cold cylinders and incorporating a heat recovery unit. The cylinders represent parallelepipeds with their thickness d selected from the ration , where: C=2.185·10-5 is a constant, λ is the heat conductivity factor of working gas (air), ω is the maximum angular speed of rotation of the crankshaft at which isothermal processes of working gas expansion-compression keep running in the cylinders, Cp is the specific working gas heat at a constant pressure, ρ is the working gas density. The cylinder width is selected to make their thickness exceeded by not over four times. |
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Invention relates to power plants and volume expansion engines, particularly to those running by expanding and compressing a working volume of gas heated and cooled in one or several continuously communicating chambers, e.g. operating on the Stirling engine principle. The external heating engine incorporates a hot set and cold set crankshafts, a set of hot cylinders with pistons and a hot con-rod set coupled, on one side, with hot pistons and, on the other side, with the hot set crankshaft, a set of cold cylinders with pistons and a cold con-rod set coupled, on one side, with cold pistons and, on the other side, with the cold set crankshaft. The engine also comprises a set of pipes connecting in pairs the hot and cold cylinders and incorporating a heat regeneration unit, a power train, a combustion chamber, a compressor, a heat exchanger and a fuel pump. The dimensions of the hot cylinders set and cold cylinders set PX are selected from the ration d>0, where d is the cylinder diameter, C=2.185-10-5 is a constant, λ is the operating gas (air) heat conductivity, ω is the maximum crankshaft phase rate at which isothermal operating gas expansion-compression do not vary, Cp is the operating gas (air) specific heat at constant pressure, ρ is the operating gas density. |
Another patent 2551099.