Patent ID: 6091061
Filing Date: 2000-07-18
Classification: F28D,Y10S

Abstract:
A system for reducing the radial leaks that can appear in a heater used for heating air being fed to thermal equipment by exchanging heat with hot flue gases taken from the outlet of said thermal equipment, the system being of the type comprising:a rotor fitted with a plurality of heater elements supported by radial metal plates that form diaphragms, said heater elements having flows of air and of flue gases passing through them in alternation;a stator constituted by a leakproof metal case having air and flue-gas ducts connected thereto; andradial sealing means restricting the leakage of air into the flue gases and integrating a plurality of sector plates hinged to the shaft of the rotor and positioned over said heater elements together with radial gaskets provided on the diaphragms;said system further comprising mechanical means for acting on the operating clearance that exists between each sector plate and said radial gaskets, and wherein said mechanical means are controlled by regulation means connected to information means providing information about the operating rate of the thermal equipment, further wherein said information means is devoid of a position detecting means for detecting the relative position of the sector plates and the radial gaskets, andsaid regulation means continuously imparting a relative position to each sector plate relative to said radial gaskets, wherein said regulating means determines said relative position based on a relationship between deformation of the sector plates and the operating rate of the thermal equipment as provided by said information means.