EXPANSION VALVE AND ITS CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide an expansion valve in which as optimally high pressure as much as possible is established at its upstream side by simply actuating a cooling cycle without requiring costs for production and assembly, and to provide its control method.

SOLUTION: This invention relates to the expansion valve wherein the opening/closing motion of a valve closing member 39 is set corresponding to a difference between pressure in a inflow port 34 on the high pressure side and pressure in an outflow port 37 on the low pressure side, and to its control method.

COPYRIGHT: (C)2005,JPO&NCIPI