Fixture for and method of assembling heat exchanger core

Claim 1

A METHOD OF MAKING A TUBE TYPE BRAZED HEAT EXCHANGER CORE HAVING END PLATES AND BAFFLES INTERMEDIATE THEREOF THROUGH WHICH A PLURALITY OF TUBES EXTEND AND WHICH DEFINE A PLURALITY OF COMPARTMENTS ADAPTED TO BE FILLED WITH PELLET MATERIAL COMPRISING THE STEPS OF: PROVIDING A FIXTURE HAVING A TWO PART HOUSING REMOVABLY SECURED TOGETHER TO FORM A CAVITY CLOSED AT ONE END BY AN END PLATE REMOVABLY SECURED TO THE TWO PART HOUSING AND PROVIDED WITH A PLURALITY OF LOADING PORTS FORMED IN THE SIDEWALL THEREOF, PLACING THE TWO PART HOUSING UPRIGHT ON THE CLOSED END THEREOF, INSERTING A FIRST END PLATE OF SAID CORE IN POSITION WITHIN SAID TWO PART HOUSING AND INSERTING ONE END OF THE PLURALITY OF TUBES IN SPACED APART OPENINGS FORMED IN SAID FIRST END PLATE, INSERTING SPACING MEMBERS AND BAFFLES SPACED APART BY SAID SPACING MEMBERS IN ORDER LONGITUDINALLY WITHIN SAID TWO PART HOUSING TO DEFINE THE PLURALITY OF COMPARTMENTS SEPARATED BY SAID BAFFLES AND COMMUNICATING WITH SAID LOADING PORTS, INSERTING A SECOND END PLATE OF SAID CORE HAVING SPACED APART OPENINGS THEREIN WHICH RECEIVE THE OPPOSITE END OF SAID PLURALITY OF TUBES IN POSITION WITHIN SAID TWO PART HOUSING, INSERTING AN END PLATE IN POSITION AGAINST SAID SECOND END PLATE AND LOCKING THE SAME IN POSITION TO THEREBY RETAIN SAID FIRST AND SECOND END PLATES AND SPACING MEMBERS AND BAFFLES INTERMEDIATE SAID FIRST AND SECONE END PLATES IN SPACED APART RELATIONSHIP, PLACING SAID TWO PART HOUSING ON A SIDE THEREOF WITH THE LOADING PORTS THEREIN FACING UPWARD, POURING PELLET MATERIAL THROUGH EACH OF SAID LOADING PORTS TO FILL THE CHAMBER COMMUNICATING THEREWITH, INSERTING PLUGS IN SAID LOADING PORTS TO RETAIN THE PELLET MATERIAL WITHIN THE CHAMBERS, SUBJECTING THE FIXTURE WHICH IS COATED WITH A MATERIAL TO PREVENT ADHERENCE OF BRAZING MATERIAL THERETO AND THE HEAT EXCHANGER CORE WHICH IS COATED WITH A BRAZING MATERIAL TO A BRAZING OPERATION WHEREBY THE COMPONENT SECTIONS OF THE HEAT EXCHANGER CORE ARE BRAZED TOGETHER TO FORM A UNITIZED HEAT EXCHANGER CORE, AND DISASSEMBLING THE TWO PART HOUSING AND END PLATE SECURED THERETO TO PERMIT REMOVAL OF THE UNITIZED HEAT EXCHANGER CORE THEREFROM.