Title:
HEAT EXCHANGER
Document Type and Number:
Japanese Patent JPS61119697
Kind Code:
A
Abstract:
PURPOSE:To improve durability and to prevent the decrease of thermal efficiency by plating heat transmitting members made of copper of a heat exchanger with an alloy of Bi-Sb and coating the latent heat recovering part of said members with an org. resin thereby preventing the corrosion by a waste combustion gas. CONSTITUTION:The heat exchanger 3 of the constitution united with the main heat exchange part A consisting of the heat transmitting members made of copper which are endothermic fins 4 and water tubs 5 and the heat exchange part B for recovering latent heat in the lower part of a burner 1 and a combustion chamber 2 is disposed in a gas water heater provided with said burner 1 and the plating layer consisting of the alloy such as Bi-Sb or Bi-Sb-Sn is formed on the surfaces of the above-mentioned heat transmitting members made of copper. The coating layer consisting of the org. resin binder is further formed on the above-mentioned plating layer of the heat exchange part for recovering the latent heat. The above-mentioned Bi-Sb alloy is composed of 4-14wt% Sb and the balance Bi and any of an epoxy resin, polyamide resin, melamine resin or acrylic resin is preferably used for the above-mentioned resin binder.
Inventors:
FUKUDA YU
KANEKO YASUNORI
KANEKO YASUNORI
Application Number:
JP24112684A
Publication Date:
June 06, 1986
Filing Date:
November 15, 1984
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F24H9/00; B21D53/02; C25D3/56; C25D7/00; F28F19/06; (IPC1-7): B21D53/02; C25D3/56; C25D7/00; F24H9/00; F28F19/06
Attorney, Agent or Firm:
Toshio Nakao