公开(公告)号：US20240318743A1

公开(公告)日：2024-09-26

申请号：US18733940

申请日：2024-06-05

Applicant: Danfoss A/S

Inventor： Sigurd Larsen ,  Kurt Harck ,  Søren Støttrup Kristensen ,  Birthe Nissen Reese ,  Charlotte Vibeke Pingel Vagnsholdt

IPC: F16K31/50 ,  F25B41/35

CPC classification number: F16K31/508 ,  F25B41/35 ,  F25B2500/01

Abstract: Electric expansion valve (1) including a valve housing (12), a valve seat (2), a valve element (3) cooperating with the valve seat (2), a drive driving the valve element (3) and including a rotary motor (4) having an axis (17) of rotation. The valve element (3) is connected to the motor (4) and has a possibility of radial displacement between the rotor (6) and the valve element (3) with respect to the axis (17) of rotation. Such an expansion valve should ensure a long lifetime with low production costs. To this end the valve element (3) is connected to the motor (4) by means of a fixing element (16) which guarantees a defined position of the valve element (3) in axial direction while allowing the radial displacement between the axis (17) of rotation and the valve element (3).

公开(公告)号：US12072039B2

公开(公告)日：2024-08-27

申请号：US17415510

申请日：2019-12-16

Applicant: Danfoss A/S

Inventor： Sigurd Larsen ,  Kurt Harck ,  Søren Støttrup Kristensen ,  Birthe Nissen Reese ,  Charlotte Vibeke Pingel Vagnsholdt

IPC: F16K31/50 ,  F25B41/35

CPC classification number: F16K31/508 ,  F25B41/35 ,  F25B2500/01

Abstract: An electric expansion valve (1) including a valve housing (12), a valve seat (2), a valve element (3) cooperating with the valve seat (2), a drive driving the valve element (3) and including a rotary motor (4) having an axis (17) of rotation. The valve element (3) is connected to the motor (4) and has a possibility of radial displacement between the rotor (6) and the valve element (3) with respect to the axis (17) of rotation. Such an expansion valve should ensure a long lifetime with low production costs. To this end the valve element (3) is connected to the motor (4) by means of a fixing element (16) which guarantees a defined position of the valve element (3) in axial direction while allowing the radial displacement between the axis (17) of rotation and the valve element (3).