公开(公告)号：US20190040976A1

公开(公告)日：2019-02-07

申请号：US16076877

申请日：2017-02-07

申请人： Danfoss A/S

发明人： Jesper Schmidt HANSEN ,  Leo Finn JENSEN ,  Anders PEDERSEN

IPC分类号： F16K47/14

摘要： The present invention relates to a valve arrangement (1) comprising a valve housing (2), a valve inlet (3), a valve outlet (4) and a diaphragm assembly for controlling a fluid flow through the valve housing (2) from the valve inlet (3) to the valve outlet (4), the diaphragm assembly comprising a diaphragm (5) and a diaphragm plate (6) at least partially covering the diaphragm (5), the diaphragm (5) comprising one or more equalization holes (13) passing through the diaphragm (5) and the diaphragm plate (6) comprising one or more equalization openings (12) passing through the diaphragm plate (6), the equalization holes (13) being aligned with the equalization openings (12). According to the invention, the diaphragm assembly comprises an engagement zone engaging the diaphragm (5) in order to rotationally fix the diaphragm (5) and the diaphragm plate (6) with respect to each other. This has the effect that the equalization holes (13) will keep aligned with the equalization openings (12). Thus, proper function of the valve arrangement (1) is ensured at all times. Furthermore, the invention relates to a diaphragm assembly for a valve arrangement (1) as described above.

公开(公告)号：US20230011997A1

公开(公告)日：2023-01-12

申请号：US17785200

申请日：2020-12-15

申请人： Danfoss A/S

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

IPC分类号： F25B41/35

摘要： An expansion valve (1) is described to include 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) has 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.