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AssigneeSanyo Electric Co., Ltd.
InventorsHiroshi Sekiya, Masahisa Otake, Junji Matsue, Ryouichi Katohno, Toshikazu Ishihara, Izumi Okamoto, Yoshiaki Kurosawa, Mitsuhiko Ishino
Estimating the term…
Gas displacement volumes of a high temperature chamber and a middle temperature chamber in a high temperature portion of a hot gas machine are different. Alternatively, a gas displacement volume of a low temperature chamber and a middle temperature chamber in a low temperature portion are different.
A thermally activated heat pump comprising:
A thermally activated heat pump comprising:
A thermally activated heat pump comprising:
Dependencies are inferred from the claim text.
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Component parts or details: regenerators
Having at least two working members, e.g. pistons, delivering power output: engine plants with combined cycles, e.g. Vuilleumier
The engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly…:…
Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point: characterised by the cycle used, e.g.…
Term ended 8 Dec 2012 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a hot gas machine which includes low-temperature, middle-temperature and high-temperature heat sources, which causes a working medium to absorb the heat from the low-temperature heat source and from the high-temperature heat source, and which discharges the absorbed heat to the middle-temperature heat source.
One of the basic machines which comprises low-temperature, middle-temperature and high-temperature heat sources and discharges the absorbed heat to the middle-temperature heat source is a Vuilleumier (VM) cycle machine as disclosed in U.S. Pat. No. 1,275,507.
In general, a hot gas machine has two displacers for displacing a working medium, that is, a high-temperature displacer and a low-temperature displacer, and is divided into a high temperature portion and a low temperature portion with which the displacers are respectively associated. That is, in both the high temperature portion and the low temperature portion, the working medium is displaced by the operation of the displacers. The volume of a "working chamber" changes as the gas is displaced by a displacer. The high temperature portion and the low temperature portion each has two working chambers, one of which is under a temperature substantially equal to that of the middle-temperature heat source and will be hereinafter referred to as "a middle temperature chamber". Similarly, the working chamber under a temperature equal to that of the high-temperature heat source and the working chamber under a temperature equal to that of the low-temperature heat source will be referred to as "a high temperature chamber" and "a low temperature chamber", respectively.
FIG. 1 is a schematic diagram of a first embodiment of a hot gas machine according to the present invention,
FIG. 2 is another schematic diagram of a first embodiment of a hot gas machine according to the present invention,
FIG. 3 is an operational diagram of the hot gas machine, showing strokes during the operation,
Referring first to FIG. 1, a hot gas machine according to the present invention has a high temperature side cylinder 1, a low temperature side cylinder 2, both of which contain a working medium (gas) such as helium gas and hydrogen gas sealed therein, a high temperature side displacer 3 which partitions an interior of the high temperature side cylinder 1 into a high temperature chamber 4 and a high temperature side middle temperature chamber 5, and a low temperature side displacer 6 which partitions an interior of the low temperature side cylinder 2 into a low temperature chamber 7 and a low temperature side middle temperature chamber 8.
The high temperature chamber 4 is connected to the high temperature side middle temperature chamber 5 by means of a high temperature side gas passage 9. The high temperature portion is also provided with a high temperature side heat exchanger 10, a high temperature side regenerator 11 and a middle temperature side heat exchanger 12.
The low temperature chamber 7 is connected to the low temperature side middle temperature chamber 8 by means of a low temperature side gas passage 13. The low temperature portion is also provided with a low temperature side heat exchanger 14, a low temperature regenerator 15 and a middle temperature side heat exchanger 16.