What is the three-wire principle of the CRV compressor?
1 Answers
The control of compressor noise mainly involves three aspects: mufflers, sound-absorbing tunnels, and sound insulation technology. Below are the detailed explanations: 1. Install mufflers: The main noise sources are the intake and exhaust ports, so suitable intake and exhaust mufflers should be selected. The spectrum of compressor intake noise exhibits low-frequency characteristics, so the intake muffler should adopt a reactive structure or an impedance composite structure primarily based on reactivity. The compressor's exhaust pressure is high, and the airflow velocity is fast, so a small-hole muffler should be used at the exhaust port. 2. Set up sound-absorbing tunnels: Sound-absorbing tunnels are underground or semi-underground passages with walls built from bricks that have good sound-absorbing properties. Connect the compressor's intake pipe to the sound-absorbing tunnel so that air enters the compressor through the tunnel. Using sound-absorbing tunnels can significantly reduce the intake noise of the compressor, and their service life is longer than that of ordinary mufflers. 3. Install a soundproof enclosure: After installing mufflers or setting up sound-absorbing tunnels at the compressor's intake and exhaust ports, the airflow noise can be reduced to below 80dB(A). However, the mechanical noise and motor noise of the compressor remain high, so a soundproof enclosure should also be installed on the compressor unit.
