The stirling engine |
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IPC classes for russian patent The stirling engine (RU 2007605):
 External heating engine / 2332582
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
 External heating engine / 2335650
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
 Generation method of mechanical (electric) power by means of stirling engine using heat of secondary power resources, geothermal sources and solar power for its operation / 2406853
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.
 Power plant with opposed stirling engine / 2443889
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.
 Rotary internal combustion engine / 2451811
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.
 External heat supply engine built around parson's oscillating piston engine drive / 2519532
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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(57) Abstract: The inventive movable ferrule end 14 of the contact seal Stirling engine provided with a tapered shank 16. The shank 16 and partially crankshaft 2 comprises a thin-walled rubber cuff 13. Fixed ferrule made integral with the body 17 of the seal and its contact ring 18 is made of quartz glass. The impeller 13 of the centrifugal pump is installed on kolenchatom shaft 2 and is connected with the impeller 20, made on its flat side to the housing 17, and the last and the crankshaft 2 is provided with channels 21 for supplying and discharging a coolant, which is supplied to the contact rings 15 and 18 by means of the intakes 24, placed in the suction cavity 25 of the impeller 13 and the impeller 20, which creates a vacuum in the channels 21. Leakage of the working fluid in the clearance between the movable holder 14 and the crankshaft 2 is prevented by means of thin-walled rubber seal 19, which, embracing the shank 16, allows you to operate the motor at significant pressure of the working fluid. 1 Il. The invention relates to the field of engineering, namely the engine, and can be used in the design of engines striated shaft, the cylinder is mounted on the crankcase, pistons accommodated in the cylinder, kinematically connected to the crankshaft and dividing the volume of the cylinder in the cavity of the extension and the cavity of the compression connected by highway with the heater, regenerator and cooler, radiator coolant, connected by pipeline through the impeller of the centrifugal pump to the cooler, a movable ferrule end-face sealing contact with the ring, covering the crankshaft, with the possibility of axial movement, a stationary ring with slip ring, mounted in the seal housing and the channels for supplying and discharging the coolant. However, the execution engine can be used to cool and lubricate the contact ring, making the choice of material in their manufacture is limited, moreover, is limited, and the pressure of the working fluid in the inner loop. The aim of the invention is to achieve and maintain high effective performance of the engine during the perfo - operation by reliable sealing of its internal cavities. The objective is achieved by the fact that the well-known Stirling engine provided with a thin rubber sleeve on the shoulder on Klah, on the flat side of the impeller of the centrifugal pump has an impeller movable ferrule provided with a covering crankshaft taper shank, channels, inlet and outlet coolant made in the crankshaft and the seal housing, and on the surfaces of the base of the tapered shank and the crankshaft is made of radial grooves, and thin-walled rubber cuff partially covers the crankshaft and part of the shank of the movable holder and the shoulder is placed in the radial grooves of the latter, the impeller of a centrifugal pump is installed on the crankshaft and is connected with the impeller to the housing seals and channels for supplying and discharging the coolant are connected on one side to the impeller, and on the other to the suction cavity of the impeller of the pump. The drawing shows a schematic diagram of the proposed Stirling engine. The engine includes a crankcase 1 crankshaft 2, the cylinder 3 mounted on the crankcase, pistons 4 and 5, placed in the cylinder and separating the volume of the cavity compression 6 and the cavity of the extension 7, the line connecting the cavity with the heater 8, a regenerator 9 and the cooler 10, the heat sink 11, the connected truboprovodnie with the contact ring 15 and a tapered shank 16, the housing 17 of the seal, the contact ring 18 of the casing, thin rubber sleeve 19, the impeller 20 is performed on the flat side of the impeller of the centrifugal pump, the channels 21 for supplying and discharging a coolant, radial channels 22 and 23, made on the base of the shaft and the crankshaft, the intakes 24 coolant placed in the suction cavity 25 of the impeller of the pump. The engine is as follows. The volume of the crankcase 1 and the cylinder 3 is filled with the working fluid (hydrogen, helium, air and other ) under high pressure. When the movement of the pistons 4 and 5 are alternate concentration of the main mass of the working fluid in the heater 8 and the cavity of the extension 7, the cooler 10 and the cavity of the compression 6. The supply of heat to a working body is continuous through the wall of the heater 8. When the main propellant mass is concentrated in the heater and cavity expansion, it receives the maximum amount of heat, its temperature and pressure increase. The process of expansion with simultaneous perestukivaniem of the working fluid in the cavity of the compression 6, the accumulation of heat in the regenerator 9 and outlet warmth in the cooler 10. When the bulk of the working body sosr the maturity extension, the exhaust heat of the cooler 10 and a supply of heat in the regenerator 9 and the heater 8. The difference of the work of expansion occurring at high temperature working fluid, and compression occurring at low temperatures, allows useful work on the motor shaft. In this design the engine with crankcase set a certain wavering, as a result of movement of the piston 4, the pressure of the working fluid. When the pressure of the working fluid in the cavity of the compression 6 more than in the cavity of the crankcase is leaking through the seal of the piston 4 in the crankcase, while the reverse holds, the working fluid is pumped from the sump into the cavity of the compression 6 through outlet line unilateral action (not shown). The power of the Stirling engine is directly proportional to the pressure of the working fluid and its loss from the internal cavities of the engine lead to loss of power. In mechanical contact seal major losses of the working fluid are in contact rings 15 and 18, therefore the purity of the processing of their contacting surfaces, the coefficient of friction, cooling and lubrication play a major role in the reliability of the seal. A supply of cooling and lubrication to the rings 15 and 18 is carried out by means of the intakes 24, nab is undertaken with the help of the impeller 20 of the impeller 13 of the pump creates negative pressure. Leakage of the working fluid in the clearance between the movable yoke and crank shaft 2 is prevented by means of thin-walled rubber cuff 19 and having a tapered shank 16 on the holder 14 allows it to move freely along the crankshaft 2 without damage cuff 19 and to withstand the last significant pressure of the working fluid. (56) , Walker. Stirling Engines. M. : Mashinostroenie, 1985, S. 180-182. The STIRLING ENGINE, which contains a crankcase with a crankshaft, at least one cylinder mounted on the crankcase, pistons accommodated in the cylinder, kinematically connected to the crankshaft and dividing the volume of the cylinder in the cavity of the extension and the cavity of the compression, United among themselves by means of line with the heater, regenerator and cooler, radiator coolant, connected by pipeline through the impeller of a centrifugal pump with suction and delivery cavities to the cooler, a mechanical seal having a movable holder with the contact ring, covering the crankshaft, with the possibility of axial movement, and a fixed yoke with additional contact ring fixed in the seal housing and the channels for supplying and discharging the cooling of liquids sealing the internal cavity, it has a rubber sleeve with a flange at the ends, a stationary ring made integral with the seal housing, and additional contact ring is made of quartz glass, the impeller of a centrifugal pump is installed on the crankshaft and provided with impeller adjacent to the seal housing, the movable ferrule provided with a covering crankshaft taper shank, on the surface of the latter and on the surface of the crankshaft is made of radial grooves, a rubber cuff is made covering the shank and partially crankshaft, her shoulder is placed in radial grooves, channels supply is made in the crankshaft and connected to the suction cavity, the impeller of the pump, and drainage channels made in the seal housing and connected to the impeller.
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