公开(公告)号：WO2021122664A1

公开(公告)日：2021-06-24

申请号：PCT/EP2020/086313

申请日：2020-12-15

Applicant: DANFOSS A/S

Inventor： PETERSEN, Hans Kurt ,  JENSEN, Leo Finn ,  PEDERSEN, Anders ,  MATZEN, Detlet ,  PAPADIMITRIOU, Alexandra

IPC: F25B41/31 ,  F25B41/35 ,  F25B2341/06

Abstract: An expansion valve (1) is described comprising a housing (2) having in inlet port (3) and an outlet port (4), a valve seat (5) arranged between the inlet port (3) and the outlet port (4), a valve element (6) movable over an operating stroke between a closed position at the valve seat (5) and an opened position away from the valve seat (5), and an actuator (7), wherein the actuator (7) comprises an electric rotary motor (8) acting on the valve element (5) by means of a threaded spindle (10) and a nut (9), wherein one of spindle (10) and nut (9) is rotatably driven by the motor (8) and the other one is rotatably fixed. Such an expansion valve should have the possibility for a simple assembly. To this end, in a disassembled condition of housing (2) and actuator (7) the actuator (7) has a mounting stroke which is at least two times the operating stroke, wherein the mounting stoke extends the operating stroke.