公开(公告)号：US20240142021A1

公开(公告)日：2024-05-02

申请号：US18548159

申请日：2021-09-14

Applicant: DANFOSS A/S

Inventor： Sigurd LARSEN ,  Jens Boesen PAWLIK ,  Clemens FOCK

IPC: F16K39/02 ,  F16K1/36

CPC classification number: F16K39/024 ,  F16K1/36 ,  F25B41/325

Abstract: An active balancing valve for a refrigeration and/or air-conditioning application having a valve housing with an inlet orifice, an outlet orifice and a mounting portion, a main valve element with a main pressure balance orifice and a control element at least partially defining a pressure balance passage. Each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice. The control element closes the main pressure balance orifice of the main valve element in a closed state of the valve.

公开(公告)号：US20240209954A1

公开(公告)日：2024-06-27

申请号：US18555658

申请日：2021-02-11

Applicant: Danfoss A/S

Inventor： Sigurd LARSEN

IPC: F16K31/04 ,  F16K27/00

CPC classification number: F16K31/04 ,  F16K27/00

Abstract: A coil assembly housing for housing the actuator of a stepper motor valve includes a snap feature for snap fitting the coil assembly housing to a valve house assembly, wherein the snap feature includes at least one protrusion pointing radially inward of the coil assembly housing, wherein the protrusion is provided for interacting with a recess of the valve house assembly, and wherein the protrusion is held inside the recess by a wall of a valve block, into which the valve house assembly and the snap feature are insertable. The disclosure also pertains to a valve house assembly, a valve block and a stepper motor valve having such components.

公开(公告)号：US20250155045A1

公开(公告)日：2025-05-15

申请号：US18837784

申请日：2022-12-30

Applicant: Danfoss A/S

Inventor： Birthe Nissen REESE ,  Sigurd LARSEN ,  Nicolai Risom WINDELBORG

IPC: F16K31/04

Abstract: A rotor tube assembly for a fluid valve actuator including a bearing housing assembly, a lead screw with a bottom shoulder, a rotor sleeve assembly with a non-block assembly, a bushing and a rotor tube. The lead screw is provided at least partially inside the bearing housing assembly, the rotor sleeve assembly, the bushing and the rotor tube. The bottom shoulder abuts the bearing housing assembly and the lead screw includes a bottom threaded portion on one side of the bottom shoulder and on the other side of the bottom shoulder and in this given order a bottom coupling portion for coupling the bearing housing assembly to the lead screw, a central coupling portion for coupling the rotor sleeve assembly to the lead screw, and an upper coupling portion for coupling the bushing to the lead screw. The bottom shoulder has a larger outer diameter than the coupling portions, the bottom coupling portion has a larger outer diameter than or the same diameter as the central coupling portion and the upper coupling portion has a smaller diameter than or the same diameter as the bottom coupling portion and the central coupling portion. The disclosure is also directed at a method for assembling a rotor tube assembly.