Defrost system for gas absorption type refrigerators

Claim 1

IN AN ABSORPTION TYPE REFRIGERATING SYSTEM HAVING A GENERATOR, A CONDENSER, A SET OF EVAPORATOR COILS ARRANGED IN A GENERALLY STACKED ORIENTATION AND SUBJECT TO COLLECTING FROST DURING NORMAL OPERATING, AND AN ABSORBER, A DEFROST SYSTEM USING VAPORIZED REFRIGERANT FROM THE GENERATOR AS A SOURCE OF HEAT CHARACTERIZED BY HAVING A DEFROST COIL DISPOSED ADJACENT SAID STACKED EVAPORATOR COILS AND ORIENTATED TO DEFINE A GENERALLY TOP TO BOTTOM FLOW PATH, AN INPUT MEANS AT SAID DEFROST COIL TOP ADAPTED TO RECEIVE HOT GAS FROM THE GENERATOR, AN OUTPUT MEANS AT SAID DEFROST COIL BOTTOM CONNECTED TO A LOWER ONE OF SAID STACK OF EVAPORATOR COILS, SAID DEFROST COIL FORMED TO DEFINE A CIRCUITOUS PATH FOR RETARDING FLOW OF DEFROST WORKING FLUID THERETHROUGH SO AS TO ASSIST IN TRANSFER OF HEAT TO SAID DEFROST COIL AND THERETHROUGH TO SAID EVAPORATOR COILS AND MEANS THERMALLY CONNECTING SAID DEFROST COIL TO SAID EVAPORATOR COILS TO TRANSFER A PREDETERMINED PORTION OF THE HEAT FROM SAID DEFROST COIL TO INDIVIDUAL ONES OF SAID SET OF EVAPORATOR COILS AS TO UNIFORMLY DEFROST SAID EVAPORATOR COILS.