公开(公告)号：US20220259829A1

公开(公告)日：2022-08-18

申请号：US17625197

申请日：2020-07-01

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Nilesh Anant Sutar

IPC: E02F9/22

Abstract: The present disclosure relates to systems that use a single proportional valve to control raising and lowering of a load. The present disclosure also relates to proportional valves that provide proportional flow control in first and second opposite flow directions through the proportional valve.

公开(公告)号：US11933419B2

公开(公告)日：2024-03-19

申请号：US17640453

申请日：2020-08-31

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Nilesh Anant Sutar ,  Varun Tyagi

IPC: F16K31/40

CPC classification number: F16K31/406

Abstract: The present disclosure relates to a hydraulic valve that has a two-stage con-struction that provides for higher fluid flow and lower power consumption. The present disclosure also relates to a hydraulic valve that may be constructed to include a pilot-poppet, a pilot-poppet valve seat, and a main-poppet. The main-poppet may be mechanically isolated from the pilot-poppet by the pilot-poppet valve seat.

公开(公告)号：US20220325819A1

公开(公告)日：2022-10-13

申请号：US17640453

申请日：2020-08-31

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Nilesh Anant Sutar ,  Varun Tyagi

IPC: F16K31/40

Abstract: The present disclosure relates to a hydraulic valve that has a two-stage con-struction that provides for higher fluid flow and lower power consumption. The present disclosure also relates to a hydraulic valve that may be constructed to include a pilot-poppet, a pilot-poppet valve seat, and a main-poppet. The main-poppet may be mechanically isolated from the pilot-poppet by the pilot-poppet valve seat.

公开(公告)号：US11459220B2

公开(公告)日：2022-10-04

申请号：US16202228

申请日：2018-11-28

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Nilesh Anant Sutar ,  Muzammil Qayyumoddin Quazi

IPC: F15B11/16 ,  B66F7/08 ,  F15B13/04 ,  B66F11/04

Abstract: A hydraulic system includes a pump in communication with a fluid reservoir and powered by a motor. A pressure compensator is adapted to adjust a position of a variable displacement mechanism of the pump. A load sensing line is adapted to communicate a highest load sensing pressure from a plurality of valves to the pressure compensator. The pressure compensator adjusts the variable displacement mechanism of the pump based on the highest load sensing pressure for maintaining a constant pressure drop across one or more work ports in each of the plurality of valves. The plurality of valves each include a load sense port having an integrated check valve that includes a metering orifice.

公开(公告)号：US11280354B2

公开(公告)日：2022-03-22

申请号：US17000544

申请日：2020-08-24

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Mahesh K. Jadhav ,  Nilesh Anant Sutar ,  Muzammil Qayyumoddin Quazi

IPC: F15B13/02 ,  F15B13/04 ,  F15B11/16 ,  F15B11/05 ,  F16K31/12

Abstract: A hydraulic system includes first and second valve assemblies connected to a common pump. The first valve assembly includes a main valve housed inside a manifold. A pressure compensator valve maintains a constant pressure drop across a variable orifice of the main valve. A pressure limiter valve is in communication with the main valve and the pressure compensator valve, and allows an actuator connected to the first valve assembly to operate independently of the second valve assembly so that fluid flow to a work port of the first valve assembly is not interrupted by operation of the second valve assembly.