Frequency converter with good noise reduction performance

• Main Author: CHEN ZAISHENG
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2022
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BLASTING; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SHOCK-ABSORBERS; SOUND-PRODUCING DEVICES; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a frequency converter with good noise reduction performance, which comprises a frequency converter shell and a fixing plate, a silencing sheet frame is arranged in the frequency converter shell, a silencing cotton layer is arranged on the inner wall of the silencing sheet frame, partition frames are symmetrically arranged on the outer surface of the silencing sheet frame, and the partition frames are fixedly connected with the inner wall of the frequency converter shell. The inner wall of the frequency converter shell is provided with a plurality of semicircular blocks, the outer surfaces of the semicircular blocks are provided with a plurality of salient points, one end of each semicircular block close to the inner wall of the frequency converter shell is provided with a first spring, and the front end of the frequency converter shell is provided with a fixing block which is slidably connected with the fixing plate. According to the noise reduction device, noise energy is prevente