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US 2013/0192221 A1Published application
Heat machines
OwnerGraham William Osborneinventor
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OwnerGraham William Osborneinventor
Estimating the term…
A heat machine having an external heat source and an external heat sink may be configured as a Stirling engine having a hot pair of cylinder-and-displacer combinations 15 and a cold pair of cylinder-and-displacer combinations 16 though advantageously two pairs of hot combinations 15 and two pairs of cold combinations 16 are provided, arranged mutually at right angles. Mechanisms 20 associated with the hot and cold displacers controls the movement thereof to be truly sinusoidal and are contained within casings 21. The pressure in the working fluid spaces remote from the mechanisms 20 and also the pressure in the casings 21 is monitored and compared, and then is controlled such that the casing pressure is slightly less than the minimum working fluid pressure in the working fluid spaces. The relative phase of the two mechanisms 20 associated respectively with the hot displacers and the cold displacers is adjustable (28,29,30,31; and FIG. 4).
A heat machine operating with an external heat source and an external heat sink and having:
(canceled)
A machine as claimed in claim 33, wherein the first and third casings are integrated into a common casing and the second and fourth casings are integrated into a further common casing.
A machine as claimed in claim 33, in which each mechanism comprises an eccentric drive arrangement including an output shaft, whereby the associated mount for the displacers is controlled to perform reciprocating movement corresponding to rotation of the output shaft and wherein the first and third pairs of displacers are disposed substantially at 90° to each other and the second and fourth pairs of displacers are disposed substantially at 90° to each other, and for the first and third pairs of displacers and for the second and fourth pairs of displacers each eccentric drive mechanism comprises two connected eccentric members at 180° to each other, one eccentric member having an external surface coupled to the mount of one pair of displacers and the other eccentric member having an external surface coupled to the mount of the other pair of displacers.
A machine as claimed in claim 33 and wherein the machine is configured as a Stirling engine having hot and cold pairs of displacers, wherein there are:
A method of operating a heat machine with an external heat source and an external heat sink, the machine having:
Dependencies are inferred from the claim text.