中国制冷学会第六专业委员会组织召开的“第三届全国冷藏设备术交流会”于1991年6月13日至16日在湖南省常德市召开。参加会议的有高等院校、科研单位、生产厂等30余家单位。会议收到学术论文报告25篇,交流宣读了12篇,其中有CFC_2,替换技术、节能、新产品、新技术等方面的专题。会议期间,代表们对“脉冲管深冷冰箱的试验研究”;“小型新颖的连续式速冻装置”——利用全方位与被冻结物接触,使传热效果比空气冻结提高10倍;采用CAD进行气阀和气阀弹簧设计等专题报告,引起 China Refrigeration Society sixth professional committee organized the “Third National Refrigeration Equipment Exchange Conference” June 13, 1991 to 16 in Changde City, Hunan Province held. To attend the meeting there are institutions of higher learning, research institutes, manufacturing plants and more than 30 units. The conference received 25 academic papers and exchanged 12 articles, including CFC_2, technology replacement, energy conservation, new products and new technologies. During the conference, representatives of “experimental research of pulse tube cryogenic refrigerator”; “small and novel continuous type quick-freezing device” - making use of all-round contact with objects to be frozen, making heat transfer effect 10 times higher than air freezing; adopting CAD Valve and valve spring design and other special reports, cause