公开(公告)号：US20180363797A1

公开(公告)日：2018-12-20

申请号：US15781754

申请日：2016-12-06

申请人： Danfoss A/S

发明人： Kurt Harck ,  Hongmei Deng ,  Birthe Nissen Reese ,  Jens Pawlik ,  Sigurd Larsen ,  Detlef Matzen

IPC分类号： F16K31/04

摘要： A linear actuator (1) comprising a first part (3) and a second part (5) is disclosed. The first part (3) is arranged to rotate along with a rotating part (4) of a motor (2), and the second part (5) is arranged to drive an actuated part (18, 22). A coupling (6) interconnects the first part (3) and the second part (5) to allow the second part (5) to rotate along with the first part (3) at the same angular velocity as the first part (3). The coupling (6) defines a fit tolerance between the first part (3) and the second part (5) allowing the first part (3) to rotate a predefined distance before engaging the second part (5) and rotating the second part (5) along with the first part (3). The fit tolerance ensures that the first part (3) reaches a certain angular velocity and thereby that the resulting torque transfer from the first part (3) to the second part (5) is sufficient, e.g. to release the actuated part (18, 22) from a pre-tensioned state.

公开(公告)号：US20170167624A1

公开(公告)日：2017-06-15

申请号：US15327410

申请日：2015-08-19

申请人： DANFOSS A/S

发明人： Kurt Harck ,  Jens Pawlik ,  Sigurd Larsen

IPC分类号： F16K27/10 ,  F16K1/12

CPC分类号： F16K27/102 ,  F16K1/12 ,  F16K1/123 ,  F16K3/265 ,  F16K27/105

摘要： A valve (1) comprising a first housing part (2) and a second housing part (3), the first housing part (2) and the second housing part (3) being made from a sheet metal material, and being joined by means of welding, preferably laser welding, to form a closed housing of the valve (1). An actuator (9) is arranged inside the housing for driving movements of a first valve member (7) and/or a second valve member (8), said actuator (9) being arranged directly in a flow of fluid flowing in the fluid flow path during operation of the valve (1). The valve (1) is hermetically sealed due to the welding of the housing parts (2, 3).

公开(公告)号：US10344884B2

公开(公告)日：2019-07-09

申请号：US15327410

申请日：2015-08-19

申请人： DANFOSS A/S

发明人： Kurt Harck ,  Jens Pawlik ,  Sigurd Larsen

IPC分类号： F16K27/10 ,  F16K1/12 ,  F16K3/26

摘要： A valve (1) comprising a first housing part (2) and a second housing part (3), the first housing part (2) and the second housing part (3) being made from a sheet metal material, and being joined by means of welding, preferably laser welding, to form a closed housing of the valve (1). An actuator (9) is arranged inside the housing for driving movements of a first valve member (7) and/or a second valve member (8), said actuator (9) being arranged directly in a flow of fluid flowing in the fluid flow path during operation of the valve (1). The valve (1) is hermetically sealed due to the welding of the housing parts (2, 3).

公开(公告)号：US10240830B2

公开(公告)日：2019-03-26

申请号：US14902086

申请日：2014-06-30

申请人： DANFOSS A/S

发明人： Bjarke Skovgard Dam ,  Georg Fosel ,  Carsten Molhede Thomsen ,  Jens Pawlik ,  Louis Sullivan

IPC分类号： F25B41/06 ,  F16K15/02

摘要： An expansion valve (1) for a vapor compression system, the valve (1) comprising a first valve part (5) having an outlet orifice (7) and a piston (8) movable inside the outlet orifice (7) in response to a differential pressure across the expansion valve (1), controlling a fluid flow through the valve (1). The piston (8) comprises a stop element (9) at an outlet end (8b) of the piston (8) and mechanical forcing means (10) to force the piston (8) towards a position in which the stop element (9) is brought into abutment with a valve seat (12) of the first valve part (5). A differential pressure below a predefined threshold value causes the stop element (9) of the piston (8) to abut the valve seat (12) of the first valve part (5), preventing fluid flow through the first valve part (5), via the forward fluid passage.