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US 4,283,807 AGranted
Cleaning of heat exchangers composed of tubes
AssigneeTechnos Co., Ltd.
InventorAndre G. M. A. Bizard
Life of this patent
Estimating the term…
Abstract
In a heat exchanger comprising tubes to be cleaned by the injection of compressible balls into the fluid upstream of the tubes, grids are provided downstream of the tubes to enable the balls to be separated from the flow of fluid and reinjected upstream. At least certain of the grids are fixed, their cleaning being carried out by movable combs, the teeth of which clean out the spaces between the bars of the grids.
Claims9
A device for cleaning a heat exchanger, having tubes through which a heat exchanging fluid flows, comprising:
- (a) at least one grid having bar means, located downstream of the tubes, for separating balls from the flow of the heat exchanging fluid after passage through the tubes;
- (b) at least one movable comb having teeth means for passing through the space between the bar means of said at least one grid;
- and
- (c) means for moving said at least one movable comb between an operative position, in which the teeth means pass through the space between the bar means so as to clean said at least one grid, and an inoperative position, in which the teeth means are clear of the space between the bar means.
1 more element
Dependencies are inferred from the claim text.