Fluid heater using pulsating combustion

Stoves and furnaces – Liquid heater – Fluid fuel burner for other than top-accessible vessel

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126350R, 431 1, 122 24, F24H 120, F22B 3100, F23C 1104

Patent

active

048461490

ABSTRACT:
A fluid container includes at least one pulsating combustion unit which defines an elongate exhaust passageway between two substantially parallel plates, along with an elongate combustion chamber communicating with the exhaust passageways. Two end caps close the ends of the elongate passageway and the elongate chamber. Inlets are provided for admitting a combustible fuel mixture to the combustion chamber, and spark plugs provide ignition means to ignite the mixture. The unit is disposed in the container in such a way that a major part of each of the plates defining the exhaust passageway is in direct contact with the fluid. By initiating and sustaining pulsating combustion in the combustion chamber, a high-amplitude shockwave passes through the exhaust gases, which effectively "scrubs" away the gaseous, laminar surface film on the plates, thus enhancing heat transfer through the plates.

REFERENCES:
patent: 2748753 (1956-06-01), Sarrazin et al.
patent: 3119436 (1964-01-01), Rydberg
patent: 3606867 (1971-09-01), Briffa
patent: 3738290 (1973-06-01), Belter
patent: 4314444 (1982-02-01), Putnam et al.
patent: 4318392 (1982-03-01), Schreiber et al.
patent: 4369208 (1987-01-01), Inui et al.
patent: 4708634 (1987-11-01), Vergne
patent: 4750452 (1988-06-01), Trihey

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