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US 4,527,394 AGranted
Heater head for stirling engine
OwnerJohn A. Coreyinventor
Life of this patent
Estimating the term…
Abstract
A monolithic heater head assembly which augments cast fins with ceramic inserts which narrow the flow of combustion gas and obtains high thermal effectiveness with the assembly including an improved flange design which gives greater durability and reduced conduction loss.
Claims16
A heater head assembly for use in a Stirling engine and the like, said assembly comprising:
- a vessel having a vessel wall with an internal and external surface, said external surface adapted to be exposed to external heat created by a combustion gas stream, said internal surface adapted to form a Stirling engine pressure cylinder containing a working gas;
- a plurality of external fins on said external surface forming respective channels therebetween for channeling the combustion gas therethrough;
- and
- at least one removable stuffer means positioned in a channel formed between adjacent external fins dividing said channel into at least two smaller channels thereby concentrating the combustion gas to flow closely by the respective adjacent fins so as to increase thermal energy transfer from the combustion gas to working gas within the vessel.
1 more element
A heater head assembly for use in a Stirling engine and the like, said assembly comprising:
- vessel having a vessel wall with an internal and external surface, said external surface adapted to be exposed to an external heat source such as a combustion gas or the like, said internal surface adapted to form a Stirling engine cylinder;
- a plurality of external fins on said external surface forming respective channels therebetween for channeling the combustive gas therethrough;
- regenerator wall adapted to contain regenerator means and integrally formed with the vessel wall;
- and
- said regenerator wall including flange means having an undercut means which results in said flange means accepting a portion of pressure and thermal stress on the regenerator wall during operating conditions.
2 more elements
Dependencies are inferred from the claim text.