The liquid distributor in the evaporator, air conditioning unit bears the important task of the refrigerant distribution uniformity. If the inequality, will make some refrigerant piping caused by excessive frost, causing evaporation incomplete; refrigerant points too little can not make full use of the heat transfer area of evaporator; effect of throttling element (thermal expansion valve,electronic expansion valve etc.) regulating judge self; the overall performance in order to reduce the amount of air conditioning cold.
