N’chifukwa chiyani valavu yowonjezera kutentha mu refrigeration system kuwongolera kuyenda kwa firiji?

Ngati palibe matenthedwe valavu kufutukula kuchepetsa ndi throttle madzi okwanira, madzi refrigerant kuti kuposa evaporation mphamvu ya evaporator adzalowa ndondomeko evaporation. Ngati ndi choncho, kukwera kwa evaporator sikungathe kukwaniritsa kufunikira kwa madzi ambiri. Zimakhudzanso ma compressor ndi ma condensers omwe amatsatira, zomwe zimapangitsa kuti pakhale tcheni.

Ngati kulephera kwa kutentha kwapamwamba kwa valavu yowonjezera pamtunda wa evaporator, valavu yowonjezera kutentha sikudzayendetsa madzi ndi kutuluka kwake. Mwa njira iyi, popanda valavu yowonjezera kutentha kwa depressurization ndi depressurization, kutentha kwakukulu sikungadutse. Sizingatheke kuonetsetsa kuti valve ikhoza kutsegulidwa ndi kutsekedwa monga momwe ikufunira. Izi zipangitsa kuti evaporator alephere kusungunula mufiriji wamadzimadzi kwathunthu, kupangitsa kuti mufiriji wambiri wamadzimadzi uphatikizidwe mu kompresa, zomwe zimapangitsa kuti nyundo yamadzimadzi ikhale yodabwitsa, ndikuwonjezera kuziziritsa. kuchotsera.