Patent EA-007039-B1 (EA)
Title: Cleaning method of the heating and hot water supply elements and systems from hard deposits and apparatus therefor
Inventor: TIMOSHENKO ALEXEY ANTONOVICH
IPC: F28G7/00
Filed: 2005-04-28
Abstract: A group of inventions covers the internal surfaces cleaning of systems and elements of central hot water heating of both one-storey and multi-storey buildings from hard, generally uliginose, deposits and can be used in the municipal economy for cleaning and running-in of clogged and dirtied central heating radiators, lifting pipes and pipe manifold, for cleaning of the autonomous water supply systems and of the heat-exchange equipment internal surfaces.The method includes the hydraulic shock and cavitation effect formation with the help of the compressed air impulses in the preliminary filled with water system to be cleaned for the deposits disintegration and removal out of the system to be cleaned by the water flow. In doing so, the shock wave is generated by means of the stimulation of the filled in the system water by the vacuum and compressed air impulses having the exponent form and high steepness of the leading edge, in doing so the compressed air pressure for the shock wave generation should be selected not more than rated working pressure of the system to be cleaned, and for the agitation with water of the disintegrated deposits water in the system during the impulses stimulation should be accelerated up to the speed inducing the cavitation effect with the portion of air to be supplied to the system.Hence, the method includes the formation in the preliminary filled with water heating elements and system simultaneously of both the hydraulic shocks and cavitation effect with the help of compressed air impulses what encourages more complete disintegration of the deposits and their removal by the water flow out of the system.To realize the method the apparatus is proposed which includes the receiver in the form of the hermetical vessel for compressed air accumulation with the fixed on it connecting pipe for air supply and manometer. To exclude the connecting mains inside the receiver as a consequence of additional resistance the impulse valve is fixed with commutator connected to the impulse valve outlet, which provides by means of the pipe branches and gates the connection of the receiver with the system to be cleaned or with the drain line correspondingly.The impulse valve constitutes the body with the fixed inside differential piston and spring. Under the influence of the spring the differential piston is pressed to the valve outlet port by its smaller diameter and choke it. The piston differential cascade chamber is connected directly with the internal receiver space, and the chamber under piston is connected with the control valve (not shown on the figure) and through the choke having small opening - with the receiver.Tile group of inventions provides the cleaning efficiency and speed enhancement of the heating and hot water supply elements and systems from hard deposits, as well as efforts reduction, work simplicity and increase in safety of the cleaning equipment operation and maintenance.Two points of the subject of invention and two drawings, Drawing on fig. 1 is subject lo publication.