Heating device for a heat transfer medium

Details Heating device for a heat transfer medium Heating device for a heat transfer medium

1992-04-22

1993-05-11

Walberg, Teresa J.

Electric resistance heating devices

Heating devices

Tank or container type liquid heater

F24H 120

Patent

active

052108198

ABSTRACT:
A heating device for a circulating heat transfer medium includes first and second heating stages. Each of the first and second heating stages has a first chamber and a second chamber disposed above and communicated with the corresponding first chamber. The first chamber has an inlet, an outlet and at least one electric heating unit provided therein. A conduit has two ends respectively connected to the outlet of the first chamber of the first heating stage and to the inlet of the first chamber of the second heating stage. Heat transfer medium which flows through the heating device undergoes two heating steps in the first and second heating stages. Gradual heating of the heat transfer medium is thus employed, thereby slowing down the degradation of the heat transfer medium.

REFERENCES:
patent: 736702 (1903-08-01), Davis
patent: 1399515 (1921-12-01), Phelps
patent: 1471821 (1923-10-01), Besta
patent: 1555338 (1925-09-01), Vaughan
patent: 1931145 (1933-10-01), Hall
patent: 4171593 (1979-10-01), Bigglestone

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