关键词: 温度反馈, 压缩机, 降噪控制

Abstract: The compressor is the core component of the refrigerator refrigeration cycle system and also one of the main sources of refrigerator noise. Aiming at the problem that the control method of the refrigerator refrigeration system cannot balance the high-speed refrigeration of the compressor and the low-speed noise, a low-noise control method for the refrigerator compressor based on dynamic temperature feedback. This method realizes the stepless speed regulation of the compressor by conducting a sweep frequency test on the compressor to open all available speeds, and uses a compressor adaptive speed control algorithm based on dynamic temperature feedback to adaptively generate control parameters that are more suitable for the current operating state of the refrigerator according to two key parameters, namely the temperature difference and the rate of change of the temperature difference. The experimental results obtained by comparing with the conventional mass production process show that the low-noise control method significantly better noise performance than the mass production process at each operating stage of the refrigerator, greatly reduced the proportion of operating conditions with high compressor speeds, effectively improving the noise experience of the product.

Key words: Temperature feedback, Compressor, Low-noise control