冷風(fēng)機(jī)策列
冷庫冷風(fēng)機(jī)是冷庫蒸發(fā)器的一種，冷庫冷風(fēng)機(jī)的作用是將冷庫熱力膨脹閥的低溫低壓的飽和制冷劑通過冷風(fēng)機(jī)與被冷卻介質(zhì)發(fā)生熱交換，將飽和制冷進(jìn)行氣化并且?guī)ё呃鋷靸?nèi)部熱量的換熱設(shè)備，冷庫冷風(fēng)主要由冷卻換熱排管軸流風(fēng)機(jī)、分液器容霜裝置、駿水盤等5大安部分組成，來自冷庫冷凝器的高壓常溫液態(tài)制冷劑經(jīng)過執(zhí)力膨脹閥節(jié)流后直接進(jìn)入冷庫風(fēng)機(jī)的分液器，進(jìn)行均勻分液后送入換熱排管進(jìn)行氣化吸熱，而冷庫風(fēng)機(jī)的軸流風(fēng)機(jī)則負(fù)責(zé)將冷庫機(jī)和冷庫內(nèi)空氣進(jìn)行強(qiáng)制對流循環(huán)達(dá)到冷庫制冷的目的
由于冷庫怒發(fā)器外邊的溫度低于O℃，隨著制冷時(shí)間的增加，冷庫冷風(fēng)機(jī)外表面會(huì)出現(xiàn)霜層，產(chǎn)生這些霜層后不僅嚴(yán)重影響冷庫風(fēng)機(jī)的換熱系數(shù)，還會(huì)導(dǎo)致冷庫冷風(fēng)機(jī)循環(huán)風(fēng)量的大大減少，這樣一來就會(huì)影響冷庫冷風(fēng)機(jī)的換熱量，使冷庫設(shè)備的運(yùn)轉(zhuǎn)性能嚴(yán)重下降，為了保證冷庫冷風(fēng)機(jī)有良好的換熱性能，就必須對冷庫冷風(fēng)機(jī)進(jìn)行容霜工作，目前冷庫冷風(fēng)機(jī)常見的容霜方式為電熱容霜，電熱容霜具有容霜徹底、能實(shí)現(xiàn)自動(dòng)控制等眾多優(yōu)點(diǎn)，受到很多小型醫(yī)藥冷庫、蔬菜冷庫工程的青睞
The cold storage chiller is a cold storage chiller. The function of the cold storage chiller is to exchange the low temperature and low pressure saturated refrigerant of the cold storage thermal expansion valve with the cooled medium through the chiller to vaporize the saturated refrigeration and take away the heat inside the cold storage. The cold storage of the cold storage of the heat exchange equipment is mainly composed of the cooling heat exchange tube axial flow fan, the liquid separator, the frost-proof device, the Chunshui plate, etc. The 5 high-ampere-level liquid refrigerant from the cold storage condenser is directly throttled by the forced expansion valve after throttling. The liquid separator of the cold storage fan is evenly divided and sent to the heat exchange tube for gasification and heat absorption. The axial flow fan of the cold storage fan is responsible for the forced convection circulation of the air in the cold storage machine and the cold storage to achieve the purpose of cold storage refrigeration.
Because the temperature outside the cold storage anger device is lower than the OC, the cooling surface will increase. The frost layer on the outer surface of the cold storage chiller will not only seriously affect the heat transfer coefficient of the cold storage fan, but also cause the circulation of the cold storage fan to be greatly reduced. Reducing this will affect the heat exchange capacity of the cold storage chiller, which will seriously reduce the running performance of the cold storage equipment. In order to ensure the good heat exchange performance of the cold storage chiller, the cold storage chiller must be frost-proof. Currently, the cold storage chiller is the most common. The frost-receiving method is electric heating cream, electric heating cream has the advantages of complete frost tolerance, automatic control, etc., and has received many small medicine cold storage and vegetable cold storage projects.
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