4 results about "Hot air engine" patented technology

A maximum delivery adiabatic reciprocal hot-air engine having a free interior space with a wider interior diameter than ends and an isolator-displacer having an aerodynamic exterior shape that mates with an interior shape of the hot and cold caps. The chamber and isolator-displacer are configured to isolate the hot or cold cap while exposing the volume of working fluid to the corresponding cold or hot cap. The chamber having a common space that is alternately heated or cooled by the respective hot or cold cap, The chamber is joined to a piston cylinder at the chamber's maximum interior diameter, with a volume of working fluid within the chamber communicating thermally with a piston through an opening at the common space wall. The volume of working fluid is adiabatically compressed and expanded to its intermediate temperature, thereby maximizing work and efficiency with the least amount of heat and the smallest dimensions.

A hot air engine for converting heat into motion, comprising a wall member, comprising a cylindrical wall surrounding a central axis and an end wall extending through the central axis; a displacer member comprising a cylindrical displacer part co-axial with the cylindrical wall and a displacer end part extending through the central axis, the displacer member is movable, relative to the wall member, back and forth along the central axis to move a working fluid between a first chamber and a second chamber of the engine through the regenerator passage defined by the cylindrical wall member and the cylindrical displacer member; and a heating system provided with a heating zone separated from the first chamber by the end wall, wherein the cylindrical displacer part and the displacer end part together surround the cylindrical wall and the end wall, wherein the end wall defines the heating zone within the wall member.

A hot air engine for converting heat into motion, comprising a wall member, comprising a cylindrical wall surrounding a central axis and an end wall extending through the central axis; a displacer member comprising a cylindrical displacer part co-axial with the cylindrical wall and a displacer end part extending through the central axis, the displacer member is movable, relative to the wall member, back and forth along the central axis to move a working fluid between a first chamber and a second chamber of the engine through the regenerator passage defined by the cylindrical wall member and the cylindrical displacer member; and a heating system provided with a heating zone separated from the first chamber by the end wall, wherein the cylindrical displacer part and the displacer end part together surround the cylindrical wall and the end wall, wherein the end wall defines the heating zone within the wall member.