Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
  • F01C1/00—Rotary-piston machines or engines
  • F01C1/22—Rotary-piston machines or engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
  • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
  • F01C17/02—Arrangements for drive of co-operating members, e.g. for rotary piston and casing of toothed-gearing type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
  • F04C18/22—Rotary-piston pumps specially adapted for elastic fluids of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth equivalents than the outer member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C2/00—Rotary-piston machines or pumps
  • F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C2230/00—Manufacture
  • F04C2230/90—Improving properties of machine parts
  • F04C2230/91—Coating
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C2250/00—Geometry
  • F04C2250/20—Geometry of the rotor

Definitions

• the invention refers to four cycle internal combustion engines.
• the advantage of this invention is that it combines the best properties of both types of engine; like rotary-piston engines they do not have a crank transmission system and the gas metabolism procedure corresponds, approximately, to the gas metabolism of four cycle internal combustion engines, which determine its stable operation in a wide range of numbers of rotations.
• the aim of this invention is to achieve minimum expenses both as regards the construction and the use of internal combustion engines.
• the conchoidal engine is characterised by the fact that the rotor moves in the fixed framework, due to the effect of gas pressure in the cavities formed between the external surface of the rotor and the internal surface of the framework, thus rotating the crankshaft, joined to the transmission system of a machine, and by the fact that the rotor rotates together with the gear, which rolls in the gear with internal teeth, placed on one of the lateral walls of the framework, and also rotates around the eccentric shaft of the crankshaft.
• the movement transmitted by the rotor to the crankshaft is only achieved through rotational movements.
• the rotor passes from one cavity to the other, thus changing the volumes of the cavities from min to max and from max to min, and reversely from max to min and from min to max etc.
• air or the combustion mixture enters is compressed, burned-expanded while processed gases are extracted, and the cycle is repeated time and again. Therefore, four cycle operational cycles are executed, with a distance of 180 ° and 540 ° between them.
• the external surface of the rotor and the internal surface of the framework are formed by the special curved line - the conchoid of the circle -, the segments of the curved line itself and the two parallel surfaces.
• Concentrating plates mounted on the notches of the framework, are used to stop gas escaping from the cavities. Because there is no friction between the external surface of the rotor and the internal surface of the framework, and the external surface of the rotor is only touched by concentrating plates, the internal surface of the rotor does not require smoothing and can be coated with a special adiathermic material. As can be seen from the aforementioned, the rotor executes a complex movement— it rotates around its shaft, which in turn rotates around the main shaft of the crankshaft. The rotor's rotation around its shaft is in synchronous rotation with the crankshaft, but in the opposite direction. The balance of the conchoidal engine is simply achieved by mounting counterweights.
• Two or several rotors, with the suitable walls on the framework, are used for a smooth alternation of operational cycles in the conchoidal engine.
• the conchoidal engine consists of the fixed framework (1) composed of two synthetic symmetrical parts, assembled together with some type of fasteners.
• Rotor (2) moves within framework (1) due to the effect of gas pressure in cavities (3,1 and 3,2) that are formed between the external surface of rotor (2) and the internal surface of framework (1).
• Rotor (2) is firmly mounted on shaft (4) with gear (5) or rotor (2) is freely mounted on shaft (4) and firmly joined to gear (5).
• crankshaft (7) rotates simultaneously.
• the rotation that is transmitted to crankshaft (7) from rotor (2) is achieved by rotational movements only.
• rotor (2) passes from one cavity (3,1 or 3,2) to the other (3,2 or 3,1), thus changing the volumes of the cavities from min to max and from max to min, and reversely from max to min and from min to max etc.
• the external surface of rotor (2) is formed by the special curved line - the conchoids of the circle - and the two parallel surfaces.
• the internal surface of framework (1) is formed by the two symmetrical parts of the curved line itself and the same parallel surfaces. There is no friction between the external surface of rotor (2) and the internal surface of framework (1), because the external surface of rotor (2) is only touched by concentrating plates (8), mounted on the notches of framework (1). Thus, the internal surface of framework (1) does not require smoothing and can be coated with special adiamermic material.
• the diameter of gear (5) is equal to diameter a of the conchoid's circle, according to which the external surface of rotor (2) is formed.
• the diameter of gear (6) with internal teeth is equal to the two diameters of gear (5).
• Diameter a of the conchoid's circle and constant / of the conchoid depend on the anticipated power for the engine being designed.
• the balance of the conchoidal engine is simply achieved by mounting counterweights.
• Two or several rotors with the suitable walls on the framework, are used for a smooth alternation of operational cycles in the conchoidal engine. All rotating parts are placed in corresponding bearings.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Hydraulic Motors (AREA)
• Gear Transmission (AREA)
• Applications Or Details Of Rotary Compressors (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (2)

Family Cites Families (4)

• 2009
  • 2009-09-07 GR GR20090100479A patent/GR1007175B/el not_active IP Right Cessation
• 2010
  • 2010-08-31 WO PCT/GR2010/000039 patent/WO2011027181A2/en not_active Ceased

Non-Patent Citations (1)

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