高阻尼高抗冲聚苯乙烯解决空调蜗舌异响的研究

Research on high damping high impact polystyrene to solve the noise of volute tongue in air conditioner

空调挂机蜗舌是开机制热时温度变化最大且短时间温差最大的区域,蜗舌受热膨胀使得卡扣等装配部位产生形变位移,而形变释放瞬间部件会产生振动发声。为解决该问题,采用高阻尼的高抗冲聚苯乙烯(high impact polystyrene,HIPS)材料进行异响和振动振幅频谱测试,结果发现高阻尼、低尺寸变化率的HIPS材料可大幅减少受热膨胀产生异响的数量并降低异响的声音大小。

The volute tongue of air conditioner is the area with the largest temperature change and the largest temperature difference in a short time when the air conditioner is turned on for heating.When the tongue is heated and expanded,the buckle and other assembly parts will produce deformation displacement,and the parts will produce vibration and sound at the moment of deformation release.In order to solve this problem,the high damping high impact polystyrene(HIPS) material is used to test the noise and vibration amplitude spectrum.The results show that the HIPS material with high damping and low dimensional change rate can greatly reduce the number of abnormal noises and the size of sound caused by thermal expansion.