Water boiler with metal core

Details Water boiler with metal core Water boiler with metal core

1997-10-06

2000-12-12

Wilson, Pamela

Liquid heaters and vaporizers

Heat transmitter

Corrugated and finned heat transmitters

122169, 122245, 122250R, F22B 2306

Patent

active

061583960

ABSTRACT:
This invention relates to a natural gas fired water boiler having a spirally wrapped finned heat exchanger surrounding a burner. The center of the heat exchanger being plugged by a metal core having a constantly reducing diameter truncated cone top.

REFERENCES:
patent: 3534712 (1970-10-01), Reynolds
patent: 3731738 (1973-05-01), Cooper
patent: 3734066 (1973-05-01), Scheyen
patent: 3805745 (1974-04-01), Block
patent: 4442799 (1984-04-01), Craig
patent: 4589374 (1986-05-01), Farina
patent: 4951742 (1990-08-01), Keyes
patent: 5131351 (1992-07-01), Farina
patent: 5671700 (1997-09-01), Lackstrom
patent: 5782208 (1998-07-01), Lackstrom et al.

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