汽车顶部蒸发器制冷剂流动噪声分析及改善  

Analysis and improvement of refrigerant flow noise for automotive top evaporator

作　　者：罗玉林 陈梦飞[1] 张坡[1] 曹玉全 Luo Yulin;Chen Mengfei;Zhang Po;Cao Yuquan(Dongfeng Nissan Passenger Vehicle Technical Center,Dongfeng Motor Co.,Ltd)

机构地区：[1]东风汽车有限公司,东风日产乘用车技术中心

出　　处：《制冷与空调》2018年第10期26-30,共5页Refrigeration and Air-Conditioning

摘　　要：由于汽车顶部蒸发器放置在前排乘客头部上方的顶棚处,乘客很容易听到顶部蒸发器产生的"咕噜"和"啸叫"的制冷剂流动噪声。本文结合整车试验确认顶部蒸发器制冷剂流动噪声的声源,分析制冷剂流动噪声的发生机制,以及顶部蒸发器制冷剂流动噪声主要影响因素,提出降低制冷剂流动噪声的对策,为顶部蒸发器的前期设计提供指导。As the automotive top evaporator is mounted on ceiling above the front passengers＇ heads, the refrigerant flow noises from the top evaporator that sound like gur- gling and whistle, are usually heard by passengers. Combined with the overall vehicle test, the refrigerant flow noise source of the top evaporator is identified. The mechanism of refrigerant flow noise and the mainly influencing factors of the refrigerant flow noise are analyzed. Meanwhile, the solutions to decreasing the flow noise of refrigerant are put for- ward, which provides guidance for the prophase design of the top evaporator.

关 键 词：汽车空调 汽车顶部蒸发器 制冷剂 噪声 改善 

分 类 号：TB64[一般工业技术—制冷工程]