Ceramic shell-and-tube type heat exchanger and method for manufa

Details Ceramic shell-and-tube type heat exchanger and method for manufa Ceramic shell-and-tube type heat exchanger and method for manufa

1997-03-06

1999-08-24

Yeung, James C.

Heat exchange

Radiator core type

Side-by-side tubes traversing fin means

165905, 165159, 156 89, F28D 104

Patent

active

059413026

ABSTRACT:
A method for manufacturing a ceramic shell-and tube type heat exchanger provided with fins includes the steps of: inserting heat transfer tubes of sintered tubular ceramic into throughholes of tubular plates of unsintered plate-like ceramic each having a plurality of the throughholes for fixing the heat transfer tubes inserted thereinto; standing the heat transfer tubes vertically to a floor surface; positioning the tubular plates at both the upper and lower end portions of the heat transfer tubes; disposing between the tubular plates many fin plates of unsintered ceramic so as to pile up the fin plates in the direction of a length of the heat transfer tubes, each of the fin plates including a thin plate having a plurality of throughholes for fixing the heat transfer tubes inserted thereinto, and protrusions formed on both edge portions of the thin plate; firing the components so as to unitarily join them by the utilization of differences of firing shrinkage ratios among the heat transfer tubes, the tubular plates, and the fin plates; and removing the protrusions from the fin plates.

REFERENCES:
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patent: 4437217 (1984-03-01), Lallaye et al.
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patent: 4688629 (1987-08-01), Kohnken
patent: 4768586 (1988-09-01), Berneburg et al.
patent: 4787443 (1988-11-01), Fukatsu et al.
patent: 4867233 (1989-09-01), Gemeinhardt
patent: 5238057 (1993-08-01), Schelter et al.
patent: 5655600 (1997-08-01), Dewar et al.

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