Noise reduction technique for small type household refrigerators based on refrigerant flow suppression

作者：Liu, Yonghui; Liu, Yicai^*; Yin, Fengfu; Wang, Xiaoxin; Liu, Hua; Ding, Guoliang

来源：Journal of Vibration and Shock, 2017, 36(15): 152-157 and 193.

DOI：10.13465/j.cnki.jvs.2017.15.023

• Capillary
• Flow noise
• Household refrigerators
• Improved designs
• Noise reduction technique
• Noise suppression
• Refrigerant flow
• Test study

The refrigerant flow noise, especial, the capillary burst noise is the main factor affecting the sound quality of small type household refrigerators. However, the refrigerant flow noise does not receive special studying due to its higher theoretical difficulty and stronger tacit nature. Here, firstly the mechanism of the refrigerant flow noise of a certain refrigerator was studied based on the refrigerant flow characteristics theory and the fluid network theory. Then based on the theoretical analysis results, an improved design scheme for the transition pipe structure of capillary was proposed. Finally, the test results showed that this improvement can effectively suppress the burst noise of capillary outlet and reduce the overall noise level by 3dB(A).The study results enriched the noise suppression theory and the internal flow design theory of small type freezers, they provided a reference for the design of a new muffler of small type household refrigerators and improvement of their sound quality.

• 出版日期2017-8-15
• 单位上海交通大学