The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1992
Filed:
May. 21, 1991
Masami Kato, Nagoya, JP;
Tadashi Tanaka, Nagoya, JP;
Satoshi Nakamura, Nagoya, JP;
Tsuneo Higashi, Mihara, JP;
Hiroshi Fujike, Mihara, JP;
Katsuaki Makino, Hiroshima, JP;
Hiroshi Miyamoto, Hiroshima, JP;
Chubu Electric Power Company, Inc., Aichi, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
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.