公开(公告)号：US11828274B2

公开(公告)日：2023-11-28

申请号：US18173132

申请日：2023-02-23

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Frank Holm Iversen ,  Tommi Kolb

IPC: F04B1/126 ,  F16L27/04 ,  F16J1/04

CPC classification number: F04B1/126 ,  F16J1/04 ,  F16L27/04

Abstract: A piston (1) having a piston shaft (2), a ball head (3) at one end of the piston shaft (2), and a slider shoe (4) mounted to the ball head (3), wherein the ball head (3) has a through channel (5), the slider shoe (4) has a sliding surface (6) and a through hole (7) in communication with an end of the through channel (5), and a plastic material (8) is arranged in a gap between the slider shoe (4) and the ball head (3) and forms an inner coating (9) of the through hole (7). The production of such a piston should be facilitated. To this end a sealing surface (14) is arranged at the end of the through channel (5) wherein the sealing surface (14) surrounds the opening of the through channel (5) into the through bore (7) and an inner diameter of the sealing surface (14) is smaller than an inner diameter of the inner coating (9) of the through bore (7).

公开(公告)号：US11713837B2

公开(公告)日：2023-08-01

申请号：US17548759

申请日：2021-12-13

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Tommi Kolb

IPC: F16L15/02 ,  F16L15/00 ,  F16L58/18 ,  F16L15/04

CPC classification number: F16L15/006 ,  F16L15/02 ,  F16L58/182 ,  F16L15/04

Abstract: A tube assembly (12) including an inner tube (13) having an outer thread (15), an outer tube (14) having an inner thread (16) engaging the outer thread (15), at least for securing an angular position between the inner tube (13) and the outer tube (14) is provided. Such a tube assembly should facilitate mounting and maintenance of a reverse osmosis system. To this end, the inner tube (13) includes at least an groove (17) on its outer surface and the outer tube (14) includes an recess (18) on its inner surface, wherein a blocking element is arranged in a space formed by the recess (18) and the groove (17) in overlapping relation with the groove (17) and the recess (18).

公开(公告)号：US20230080903A1

公开(公告)日：2023-03-16

申请号：US17832797

申请日：2022-06-06

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Achuthan Babu

IPC: F04D29/046 ,  F16J15/20 ,  F04D29/08

Abstract: A hydraulic machine includes a first member (1) having a first structure (2) for a hydraulic medium opening in a first interface surface (3) and a second member having a second structure for the hydraulic medium opening in a second interface surface is described, the first interface surface (3) being in contact with the second interface surface, wherein at least one of the members (1) is provided with a support element (6) surrounding the member (1). Such a machine should have a good efficiency. To this end the support element (6) has a strength varying in circumferential direction around the member (1) and/or in thickness direction in a middle region of the member (1).

公开(公告)号：US11555488B2

公开(公告)日：2023-01-17

申请号：US17039210

申请日：2020-09-30

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Frank Holm Iversen

IPC: F04B1/2042 ,  F04B53/10 ,  F04B1/20 ,  F01B3/00

Abstract: A valve plate assembly (1) of a hydraulic axial piston machine is described, the valve plate assembly comprising a wear plate (2) made of a ceramic material surrounded by a compression ring (4). Such a valve plate assembly should be produced and maintained in a cost-effective manner. To this end, the wear plate (2) is connected to a support plate (3) by means of the compression ring (4).

公开(公告)号：US10352322B2

公开(公告)日：2019-07-16

申请号：US15187899

申请日：2016-06-21

Applicant: Danfoss A/S

Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Erik Haugaard

IPC: F04C15/00 ,  F01C21/10 ,  F04C18/32 ,  F04C2/344

Abstract: A vane cell machine (1) is described comprising a stator (2) and a rotor (3), said rotor (3) having radially displaceable vanes (4) bearing on an inside (5) of the stator (2) and bordering, together with the rotor (3), the stator (2), and a side wall (7) at each axial end of the rotor (3), work chambers (6) the volume of which changes during a rotation of said rotor, at least one side wall (7) bearing an insert in form of a ring (9). Such a machine should be of simple construction. To this end, said ring (9) comprises a centric bore (10).

公开(公告)号：US09932828B2

公开(公告)日：2018-04-03

申请号：US14930747

申请日：2015-11-03

Applicant: Danfoss A/S

Inventor： Frank Holm Iversen ,  Stig Kildegaard Andersen

IPC: F01B13/04 ,  F01B3/00 ,  F04B1/20

CPC classification number: F01B3/0023 ,  F04B1/2092

Abstract: An axial piston machine (1) is shown, comprising: a shaft (2) having an axis (3) of rotation, a cylinder drum (4) connected to said shaft (2) and having at least a cylinder (5) parallel to said axis (3) of rotation, a piston (6) movable in said cylinder (5), a swash plate (13), a slide shoe (11) pivotally mounted to said piston (6), and holding means holding said slide shoe (11) against said swash plate (13), said holding means having a pressure plate (14) and a number of coil springs (15) arranged between said cylinder drum (4) and said pressure plate (14). The object is to have a reliable operation of said machine with a simple construction. To this end each coil spring (15) is at least at one end fixed by a protrusion (20) extending into said coil spring (15).