Verfahren zur Einstellung der statischen Überhitzung an Expansionsventilen für Kältemittelkreisläufe

摘要

To effect the adjustment, the expansion valve is first set for a basic coolant (Ro) to a substantially constant static overheating temperature ( DELTA toh) in a predetermined working range of the evaporator temperature and, when the coolant circuit is filled with a replacement coolant (R1, R2) differing from the basic coolant (Ro), the pre-tension of its adjusting spring (46) is adjusted in accordance with a specification suited to the difference between the vapour pressure curves of the replacement coolant and those of the basic coolant.