Vacuum testing device of refrigerating machine

The invention provides a vacuum testing device of a refrigerating machine, and relates to the technical field of vacuum testing, a vacuum testing device body comprises a bracket, a testing box, a butt joint sealing mechanism and an auxiliary verification assembly, the top of the bracket is provided with the testing box, the top of the testing box is provided with a top plate, and the auxiliary verification assembly is installed in the middle of the top plate. The top of the refrigerating machine pressure guide pipe is inserted into the test box, a butt joint sealing mechanism is arranged at the bottom end of the test box, and a pipeline flange is arranged on the side edge of the refrigerating machine pressure guide pipe. According to the vacuum testing device for the refrigerating machine, targeted butt-joint sealing treatment can be carried out by selecting a matched replacement bottom plate according to the actual specification of a connecting pipe of the refrigerating machine to be tested through the butt-