Air heating and cooling apparatus

Claim 1

APPARATUS FOR SELECTIVELY HEATING AND COOLING AIR FOR SUPPLY TO AN ENCLOSURE COMPRISING MEANS INCLUDING A TOP COVER MEMBER HAVING AN OPENING THEREIN FORMING A CASING FOR SAID APPARATUS; PARTITION MEANS ARRANGED WITHIN SAID CASING TO FORM A CONDENSER COMPARTMENT, A COMPRESSOR COMPARTMENT, AND A COMPARTMENT FOR THE FLOW OF AIR TO BE CONDITIONED; A REFRIGERAION SYSTEM ARRANGED WITHIN SAID CASING, SAID SYSTEM INCLUDING A CONDENSER MOUNTED IN SAID CONDENSER COMPARTMENT, AN EVAPORATOR MOUNTED IN SAID CONDITIONED AIR FLOW COMPARTMENT AND A COMPRESSOR MOUNTED IN SAID COMPRESSOR COMPARTMENT; AIR HEATING MEANS, INCLUDING A DIRECT FIRED HEAT EXCHANGER FOR RECEIVING RELATIVELY HIGH TEMPERATURE FLUID FOR FLOW THERETHROUGH, POSITIONED IN SAID CONDITIONED AIR FLOW COMPARTMENT; SELECTIVELY OPERABLE FUEL BURNER MEANS COMMUNICATING WITH SAID TOP COVER MEMBER OPENING FOR SUPPLYING RELATIVELY HIGH TEMPERATURE FLUID TO SAID HEAT EXCHANGER AND FAN MEANS FOR DRAWING AIR SEPARATE FROM THAT NECESSARY TO OPERATE SAID FUEL BURNER MEANS INTO SAID CONDITIONED AIR FLOW COMPARTMENT OVER SAID EVAPORATOR TO COOL SAID AIR WHEN SAID REFRIGERATION SYSTEM IS ACTIVATED, SAID FAN MEANS BEING EFFECTIVE TO DISCHARGE AIR OVER SAID HEWAT EXCHANGER TO HEAT SAID AIR FOR SUPPLY TO SAID ENCLOSURE UPON ENERGIZATION OF SAID FUEL BURNER MEANS.