Low pressure reservoir

The utility model relates to a low pressure reservoir, its characterized in that: locate between the expansion valve and evaporimeter knockout of air-cooled refrigerating system's low tension side, including the barrel that utilizes riding to arrange, insert and fix the imported liquid pipe in barrel high order end bottom, insert and fix the export liquid pipe in barrel low order end bottom, locate the sight glass at barrel top, the barrel end that inserts of import liquid pipe and export liquid pipe is the bevel connection, exposing of import liquid pipe is held and the expansion valve exit linkage, the end that exposes of export liquid pipe is connected with the branch liquid head of evaporimeter knockout. Its fundamentally has solved the loss of high-pressure reservoir super-cooled rate and has not had the oil return problem of oil separator's air-cooled cold water system, simple structure, and the cost is lower, and the suitability is strong