Air heating apparatus

Claim 1

AIR HEATING APPARATUS COMPRISING CASING MEANS FORMING AN ENCLOSURE HAVING AN INLET AND AN OUTLET; HEAT TRANSFER MEMBERS ARRANGED IN SPACED RELATION TO ONE ANOTHER AND TO SAID CASING IN SAID ENCLOSURE, SAID HEAT TRANSFER MEMBERS HAVING A FIRST SUBSTANTIALLY HORIZONTAL SECTION, THE HORIZONTAL LENGTH OF WHICH IS RELATIVELY LARGE COMPARED TO ITS HEIGHT AND A SECOND SUBSTANTIALLY VERTICAL SECTION, THE HORIZONTAL LENGTH OF WHICH IS RELATIVELY SMALL COMPARED TO ITS HEIGHT; BURNER MEANS FOR SUPPLYING AN IGNITED FUEL-AIR MIXTURE TO THE HORIZONTAL SECTION OF EACH OF SAID HEAT TRANSFER MEMBERS, SAID HEAT TRANSFER MEMBERS FORMING A PATH FOR THE FLOW OF SAID IGNITED FUEL MIXTURE HAVING A FIRST HORIZONTAL PORTION, THE HORIZONTAL LENGTH OF WHICH FIRST PORTION IS RELATIVELY LARGE COMPARED TO THE HEIGHT AND WIDTH THEREOF AND A SECOND VERTICAL PORTION THE HEIGHT OF WHICH SECOND PORTION IS RELATIVELY LARGE RELATIVE TO HORIZONTAL LENGTH WHILE THE WIDTH REMAINS SUBSTANTIALLY CONSTANT WITH THE WIDTH OF SAID FIRST PORTION, THE HORIZONTAL LENGTH OF SAID SECOND PORTION BEING GREATER THAN THE WIDTH THEREOF; PLATE MEANS DISPOSED WITHIN SAID ENCLOSURE SUPPORTING ONE END OF THE HORIZONTAL SECTIONS OF THE HEAT TRANSFER MEMBERS IN SPACED RELATION TO SAID CASING MEANS, SAID PLATE MEANS HAVING OPENINGS THEREIN PROVIDING INLETS FOR SAID MEMBERS; PARTITION MEANS INCLUDING A SUBSTANTIALLY VERTICAL SECTION AND A SUBSTANTIALLY HORIZONTAL SECTION, SAID VERTICAL SECTION SUPPORTING THE OTHER END OF SAID HEAT TRANSFER MEMBERS AND PROVIDING OUTLETS FOR SAID HEAT TRANSFER MEMBERS, SAID PARTITION MEANS FORMING WITH SAID CASING MEANS AND SAID PLATE MEANS A COMPARTMENT WITHIN SAID ENCLOSURE ACCOMMODATING SAID HEAT TRANSFER MEMBERS, SAID PARTITION MEANS DEFINING AN OPENING HAVING A VERTICAL PORTION AND A HORIZONTAL PORTION; A FAN ASSEMBLY INCLUDING A FAN MEMBER AND A PARTIAL SCROLL SUPPORTED ON SAID PARTITION MEANS AND DISCHARGING THROUGH THE OPENING IN SAID PARTITION MEANS SO THAT AIR DISCHARGED FROM THE FAN IS INITIALLY DIRECTED DOWNWARDLY OVER THE FIRST SUBSTANTIALLY HORIZONTAL SECTIONS OF THE HEAT TRANSFER MEMBERS AND FORWARDLY OVER THE SECOND SUBSTANTIALLY VERTICAL SECTIONS OF THE HEAT TRANSFER MEMBERS UTILIZING THE SPACE DEFINED BY THE CASING, PLATE AND PARTITION MEANS FOR DIFFUSION TO THE OUTLET OF SAID CASING.