Universal testing device and method for refrigerating capacity of refrigerating machine

The invention relates to a general testing device and method for refrigerating capacity of a refrigerating machine. The general testing device comprises a temperature sensor, a heating resistor, an external testing table, a refrigerating machine cold finger, a fixing screw, a vacuum chamber flange, a multi-layer heat insulation bottom surface, a silk thread, a multi-layer heat insulation screen and a vacuum chamber shell. According to the general testing device and method for the refrigerating capacity of the refrigerating machine, the simple copper external testing table is adopted, the external testing table and the end face of the cold finger are connected and fixed through the nylon wires, the refrigerating capacity of the refrigerating machine is measured, and the purpose of rapid measurement when the specification of the cold finger is frequently changed in the research and development period of the cold finger type refrigerating machine is achieved; therefore, the cooling capacity testing method which