Mitsubishi Jukogyo Kabushiki Kaisha

Chubu Electric Power Company, Inc.

Hiroshi Fujike

Tadashi Tanaka

Masami Kato

Katsuaki Makino

Satoshi Nakamura

Tsuneo Higashi

Hiroshi Miyamoto

A method for removing soot or the like adhered to heat transfer tubes of a heat exchanger by providing a steel ball scatterer above the heat transfer tubes and intermittently scattering steel balls towards the heat transfer tubes. The improvements reside in that the steel ball scattering rate is set to a small initial rate at the commencement of the scattering operation and thereafter is increased either in a stepwise manner or continuously. Preferably, within a main body casing of the heat exchanger, a plurality of steel ball collision preventing plates having their central portions extending convexly upwards are provided between the steel ball scatterer and the heat transfer tube group, in order to prevent fins of the heat transfer tubes from being damaged by steel balls falling from the steel ball scatterer and directly colliding against the fins.

Method for removing soot by scattering steel balls in a heat-exchanger

Growing community of inventors

Mihara, Japan

Hiroshi Fujike