Abstract: A product defect online detection apparatus and method in hermetic compressor manufacturing. The online detection apparatus uses a multi-channel time-frequency-space feature fusion deep learning algorithm to perform information fusion on time-frequency features of vibration signals in three directions of a housing of a complete hermetic compressor; time-frequency features and spatial features are learned and extracted to solve the identification and classification of a manufacturing defect of the hermetic compressor; and a complete compressor defect is fed back to front-end part machining and assembling stages in real time during intelligent compressor manufacturing, so as to establish an intelligent closed loop for hermetic compressor manufacturing.

Abstract: Disclosed is a testing device and method for a service life of an air-conditioning compressor of a new energy vehicle running with pure gas. The testing device includes an alternative refrigeration system, a measurement and control system, and a testing environment room. A main refrigeration cycle system of the alternative refrigeration system runs with pure gas, gas of a testing compressor is discharged via a discharge throttle valve, and then enters a suction end via a suction throttle valve and an electronic expansion valve, and since there is no phase change, a heat exchange amount is small; adjustable ranges of the discharge throttle valve, the suction throttle valve and the electronic expansion valve are wide; and based on the system structure, a small refrigeration system can be used to test a compressor having high cooling capacity, and the system can quickly achieve a target working condition with a small amount of refrigerant.

Abstract: The present disclosure relates to the technical field of compressor performance tests and detection apparatus manufacturing, and discloses a device and method for testing starting characteristics of a refrigeration compressor with adjustable system volume. The device includes tested samples, a test refrigeration system and a test control system. The testing device realizes accurate adjustment of volume of the refrigeration system by means of control of a high-voltage terminal volume adjuster, a low-voltage terminal volume adjuster and condensing coils, and matches test requirements of different compressors for the volume of the refrigeration system, such that a substitute refrigeration system with adjustable volume is provided for testing the starting characteristics.

Abstract: Disclosed is a testing device and method for a service life of an air-conditioning compressor of a new energy vehicle running with pure gas. The testing device includes an alternative refrigeration system, a measurement and control system, and a testing environment room. A main refrigeration cycle system of the alternative refrigeration system runs with pure gas, gas of a testing compressor is discharged via a discharge throttle valve, and then enters a suction end via a suction throttle valve and an electronic expansion valve, and since there is no phase change, a heat exchange amount is small; adjustable ranges of the discharge throttle valve, the suction throttle valve and the electronic expansion valve are wide; and based on the system structure, a small refrigeration system can be used to test a compressor having high cooling capacity, and the system can quickly achieve a target working condition with a small amount of refrigerant.