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真空电子技术
2002 年第 1 期 91
VACUUM EL ECTRONICS
新型半导体制冷真空冰箱的研究
周永安,欧林林
(合肥工业大学机械与汽车学院,安徽合肥 230009)
Studies of a New Style Semiconductor Cryogenic Vacuum Refrigerator
ZHOU Yong an ,OU Lin lin
( School2 2 of M achinery and A utomobile Engineering , Hef ei U niversity of Technology , Hef ei 230009 , China)
Abstract : The semiconductor cryogenic vacuum refrigerator is a new green food one for cold storage and freeze without fluo
rine. It can use semiconductor cryogenic as cooled sources ( Peltier effect) while evacuates the air in the cold storage room. This kind
of refrigerator has a lot of functions ,for example ,ventilation ,deodorization ,freshness keeping ,vacuum freeze ,etc.
In the design of the vacuum system ,the pumping speed is calculated according to the proper pumping time ,so that the appropri
ate vacuum pump can be selected. The auto control system controls the cold storage room and the freeze respectively. It realizes the
control with the temperature sensor AD590 ,the pressure resistance gauge ZDY 1 and the control units ,so it has the functions of the
digital display and auto control.
This new kind of refrigerator has no pollution. The quality of storage food stuff is better than that of the traditional one. It can in
crease the cooling speed also ,and will have broad prospects in the near futu