Recuperator having a gas channel in whose central portion are disposed heat-absorbing, air-conducting recuperator pipes

Claim 1

A RECUPERATOR HAVING A CHANNEL THROUGH WHICH FLOWS A HEATED GAS, SAID CHANNEL INCLUDING A CENTRAL SECTION WHICH EXTENDS SUBSTANTIALLY LINEALLY, AN INLET AND AN OUTLET, EACH OF SAID INLET AND OUTLET BEING DISPOSED ANGULARLY RELATIVE TO SAID CENTRAL SECTION SO THAT SAID HEATED GAS ENCOUNTERS A CHANGE IN DIRECTION OF FLOW UPON ENTRY INTO AND UPON EXIT FROM SAID CENTRAL SECTION, AIR PIPES DISPOSED IN SAID CENTRAL SECTION SUBSTANTIALLY TRANSVERSELY OF THE DIRECTION OF FLOW OF SAID HEATED GAS THERETHROUGH AND OF SAID CENTRAL SECTION, SAID AIR PIPES BEING ADAPTED FOR FLOW OF AIR TO BE WARMED THERETHROUGH, AT LEAST ONE OVERFLOW CONDUIT EXTENDING LONGITUDINALLY OF SAID CENTRAL SECTION AND HAVING AN INLET WHICH OPENS INTO SAID CHANNEL AND WHICH IS DISPOSED ADJACENT SAID CHANNEL INLET AND IN A POSITION ACROSS FROM THAT PART OF SAID INTERIOR SURFACE OF SAID CENTRAL SECTION WHICH IS OPPOSITE SAID CHANNEL INLET AND AGAINST WHICH SAID HEATED GAS IMPINGES AS ITS ENTERS SAID CENTRAL SECTION SO THAT SAID OVERFLOW CONDUIT RECEIVES A PART OF SAID HEATED GAS, SAID OVERFLOW CONDUIT HAVING AT LEAST ONE OUTLET WHICH OPENS INTO SAID CENTRAL SECTION, WHICH IS LOCATED ADJACENT SAID AIR PIPES AND IS POSITIONED TO DIRECT HEATED GAS WHICH FLOWS THROUGH SAID OVERFLOW CONDUIT SUBSTANTIALLY TRANSVERSELY ACROSS THE LENGTHS OF SAID AIR PIPES DISPOSED IN SAID CENTRAL SECTION, SAID OUTLET OF SAID OVERFLOW CONDUIT BEING FURTHER LOCATED SUBSTANTIALLY OUT OF THE PATH OF FLOW OF HEATED GAS THROUGH SAID CENTRAL SECTION.