Patents Assigned to Danfoss
  • Patent number: 11435017
    Abstract: A device for connecting a tubular element such as a hose or pipe to a part of a hydraulic or pneumatic system includes: a body having a connection end and a tubular element insertion end, the body having a cylindrical channel extending from the connection end to the tubular element insertion end, the connection end being connecting to the part of the hydraulic or pneumatic system, the cylindrical channel including a first part and a second part, the first part being arranged in the tubular element insertion end and the second part being arranged in the connection end. The tubular element insertion end includes at a middle section a recess extending radially from the first part of the cylindrical channel, along an entire circumference, the recess bordering the second part of the cylindrical channel. The tubular element insertion end includes at least one bore.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: September 6, 2022
    Assignee: Danfoss Power Solutions II Technology A/S
    Inventors: Hasan Barca Donmez, Erhan Aptiogullari, Recep Muco, Salih Karayagiz
  • Patent number: 11429074
    Abstract: A device-system comprises parallel operating devices (105-107) for driving an operating quantity towards a target value, and a control system for controlling each device at least partly based on a device-specific integral term relating to a time integral of a device-specific error signal that is indicative of a deviation of the operating quantity from the target value. The control system comprises a stabilizing system that computes an arithmetic average of the device-specific integral terms and corrects the device-specific integral terms towards the computed arithmetic average. The correction of the device-specific integral terms makes it possible to avoid unwanted drifts in the device-specific integral terms in a situation where there are differences between the device-specific error signals. The devices can be peers to each other and thus redundancy is achieved because one device can be removed from or added to the device-system without actions from the other devices.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: August 30, 2022
    Assignee: Danfoss Editron Oy
    Inventors: Antti Tarkiainen, Risto Tiainen, Matti Iskanius
  • Patent number: 11422013
    Abstract: A sensor housing (1) including a longitudinal axis (2), a clamping area (3) surrounding the longitudinal axis (2) and a recess (4) in the clamping area (3) is described, the recess (4) running in circumferential direction. In such a sensor housing a recess in the clamping area (3) should be provided with low production costs. To this end the recess (4) is formed between a part 6 of the housing (1) and a locking element (5) fixed to the housing (1).
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: August 23, 2022
    Assignee: Danfoss A/S
    Inventors: Jørgen Grønbæk Holm, Hans-Henning Hansen, Veenith Shetty
  • Publication number: 20220252090
    Abstract: A system for damping mass-induced vibrations in a machine having a long boom or elongate member, the movement of which causes mass-induced vibration in such boom or elongate member. The system comprises at least one motion sensor operable to measure movement of such boom or elongate member resulting from mass-induced vibration, and a processing unit operable to control a first control valve spool in a pressure control mode and a second control valve spool in a flow control mode in order to adjust the hydraulic fluid flow to the load holding chamber of an actuator attached to the boom or elongate member to dampen the mass-induced vibration. The system further comprises a control manifold fluidically interposed between the actuator and control valve spools that causes the first and second control valve spools to operate, respectively, in pressure and flow control modes.
    Type: Application
    Filed: December 27, 2021
    Publication date: August 11, 2022
    Applicant: Danfoss Power Solutions II Technology A/S
    Inventor: QingHui YUAN
  • Patent number: 11408421
    Abstract: The present invention discloses a scroll compressor. At least two shrink belts (23?, 23?, 26, 26?, 28, 28?) are provided around the outer periphery of said fixed scroll between the outer periphery of said fixed scroll (2) and the inner wall surface of the upper cap (1) of the scroll compressor. The at least two shrink belts are annular, and are in interference fit between the outer periphery of said fixed scroll and the inner wall surface of the upper cap. The at least two shrink belts include a main shrink belt (23?, 23?, 28) and an assistant shrink belt (26, 26?, 28?). The main shrink belt and the assistant shrink belt are arranged side by side in the axial direction, that is, in the vertical direction of the fixed scroll, and the main shrink belt and the assistant shrink belt are spaced apart from each other by a distance. In this way, it is allowed to add other special structure (e.g.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 9, 2022
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Lin Ma, Wenhu Yao, Kun Qian, Bin Wang
  • Patent number: 11408445
    Abstract: The present disclosure relates to a motion control unit that is capable of receiving electrical power from an electrical power source and hydraulic power from a hydraulic power source. The motion control is configured to produce a blended power output derived from the electrical and hydraulic power which can be used to power a hydraulic actuator. The motion control unit can also split hydraulic power recovered from hydraulic actuator to the electrical power source and the hydraulic power source.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 9, 2022
    Assignee: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S
    Inventors: Meng Wang, Jalpa Shah, Damrongrit Piyabongkarn
  • Patent number: 11401691
    Abstract: The invention relates to a method (100) of operating an actuator arrangement including at least two types of actuators (6, 7, 11, 12, 30, 34) effectuating different types of movement of a connected device (10, 32) to be actuated, where a change of attitude of the connected device (10, 32) has an influence on the position of at least a defined part (13, 14) of the connected device (10, 32). Different types of actuators (6, 7, 11, 12, 30, 34) are actuated in an automated way to at least partly compensate for the change of position of the defined part (13, 14) of the connected device (10, 32) when changing the attitude of the connected device (10, 32), at least for a certain range of movements.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: August 2, 2022
    Assignee: Danfoss Power Solutions GmbH & Co. OHG
    Inventor: Erik Westergaard
  • Patent number: 11400514
    Abstract: Sintering tool (10) with a cradle for receiving an electronic subassembly (BG) to be sintered, characterized by at least one support bracket (20), arranged at two locations opposite the cradle, for fixing a protective film (30) covering the electronic subassembly (BG).
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: August 2, 2022
    Assignee: Danfoss Silicon Power GmbH
    Inventors: Frank Osterwald, Martin Becker, Lars Paulsen, Jacek Rudzki, Holger Ulrich, Ronald Eisele
  • Patent number: 11401692
    Abstract: A hydraulic system includes a hydraulic mechanism that includes a first and a second chamber. The hydraulic system includes a control valve fluidly connected to the first chamber and a pressure sensor that is configured to measure the fluid pressure in the first chamber. The hydraulic system includes a processing unit connected to the control valve. The processing unit is configured to control a hydraulic fluid flow rate to and from the first chamber of the hydraulic mechanism via the control valve to provide a shock absorption response. The hydraulic fluid flow rate is based at least in part on a pressure measurement received from the pressure sensor. The shock absorption response is based on a simulated hydraulic accumulator.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: August 2, 2022
    Assignee: Danfoss Power Solutions II Technology A/S
    Inventors: Michael Berne Rannow, Meng Wang
  • Patent number: 11396873
    Abstract: Embodiments of the present disclosure provide a scroll compressor. The scroll compressor includes: a fixed scroll having an end plate and a fixed scroll wrap extending from the end plate; an orbiting scroll having an orbiting scroll wrap, the orbiting scroll wrap being engaged with the fixed scroll wrap to form a plurality of compression chambers for compressing a medium; a channel formed in the end plate of the fixed scroll, the channel leading to one compression chamber of the plurality of compression chambers; and a valve provided on the end plate of the fixed scroll, and configured to open when a pressure in the one compression chamber is higher than a predetermined pressure threshold so as to allow the medium in the one compression chamber to flow out of the one compression chamber through the channel. The scroll compressor according to the embodiments of the present disclosure, for example, can improve the performance of the scroll compressor.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: July 26, 2022
    Assignee: DANFOSS (TIANJIN) LTD.
    Inventors: Changqiao Bao, Kun Qian, Wenhu Yao, Xueyou Zhou, Gang Yao, Zaiwang Wang, Quanping Lei
  • Patent number: 11394265
    Abstract: An electric machine element comprises electric terminals (101) for connecting to an external AC system and a multiphase winding (102) comprising at least two multiphase winding portions (103, 104). Each multiphase winding portion comprises phase-windings (106a-106c, 107a-107c) each having a first end (109) and a second end (110). The multiphase winding portions are successively connected to constitute chains (113a-113c) of the phase-windings so that the first ends of the phase-windings of a first one (103) of the multiphase winding portions are connected to the electric terminals. Each multiphase winding portion comprises switches (114a, 114b, 115a, 115b) for connecting the second ends of the phase-windings of the multiphase winding portion to each other. Thus, the number of turns of the multiphase winding is changeable by selecting which one of the multiphase winding portions has a star-point at the second ends of its phase-windings.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: July 19, 2022
    Assignee: Danfoss Editron OY
    Inventors: Mikko Piispanen, Mika Bjorkholm, Juha Toikka, Tapani Siivo
  • Patent number: 11391281
    Abstract: Embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, and a controller in communication with the motor. The controller is configured to store a timeout time value. The controller is also configured to initiate a pump priming process and subsequently initiate a timeout counter to begin counting a counter time value. The controller is configured to initiate a timeout interrupt routine that interrupts the pump priming process when the counter time value exceeds the timeout time value. The timeout interrupt routine includes shutting down the motor.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: July 19, 2022
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Power Electronics A/S
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Gert Kjaer, Florin Lungeanu
  • Patent number: 11384510
    Abstract: A mobile hydraulic system includes a hydraulic actuator coupled to a load, and a control unit coupled to the load and/or to the hydraulic actuator. The control unit is adapted to anticipate an over-center transition of the load relative to a gravity vector prior to the over-center transition through the use of sensors configured with accelerometers, gyroscopes and magnetometers. In some examples, the over-center transition is from an overrunning driving of the load to a passive driving of the load. In some examples, the over-center transition is from a passive driving of the load to an overrunning driving of the load. In some examples, the control unit is adapted to control change in a metered flow through one or more ports of the associated actuator to minimize and/or prevent one or more hydraulic effects of the anticipated over-center transition. In some examples, the control unit controls the metered flow by causing one or more actuators (e.g.
    Type: Grant
    Filed: June 29, 2019
    Date of Patent: July 12, 2022
    Assignee: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S
    Inventor: Aaron H. Jagoda
  • Patent number: 11381089
    Abstract: An electric power system includes electric energy sources and control equipment for controlling the electric energy sources in accordance with a target value of electric power produced by the electric power system. The control equipment activates and deactivates the electric energy sources based on a control value and on activation and deactivation limits. The control value can be the target value or the actual value of the electric power. The control equipment controls active electric energy sources according to the target value and according to power sharing defined for the active electric energy sources. The activation and deactivation limits as well as activation and deactivation order of the electric energy sources can be determined based on properties of the electric energy sources and on a prevailing operational situation of the electric power system.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: July 5, 2022
    Assignee: DANFOSS EDITRON OY
    Inventors: Tommi Kankaanranta, Ville Naumanen
  • Patent number: 11377953
    Abstract: A rotary fluid pressure device, such as a low-speed, high-torque gerotor motor, is provided with a valve drive shaft that is partially inserted into and engaged with a main drive shaft as the main drive shaft engages a rotating output shaft and engages a rotating and orbiting star member of a positive displacement device. The device is also provided with a drive retainer configured to retain the engagement of the main drive shaft and the valve drive shaft.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 5, 2022
    Assignee: Danfoss Power Solutions II Technology A/S
    Inventors: Jay Paul Lucas, Todd Dean Degler
  • Patent number: 11378068
    Abstract: A pump control assembly for controlling a variable displacement hydraulic pump includes a spool mounted within a valve block. The spool is configured to move between a first and a second position within the valve block so as to selectively control the displacement of the attached pump. The pump control assembly further includes first and second chambers that each apply a force to opposite ends of the spool. The first chamber is positioned at a first end of the spool in fluid communication with a pump output port. The second chamber is positioned at a second end of the spool and in fluid communication with a hydraulic tank port and a proportional pressure reducing valve. The second chamber also includes a piston and first and second springs positioned on either side of the piston.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: July 5, 2022
    Assignee: Danfoss Power Solutions II Technology A/S
    Inventors: Anil Balasaheb Kharpas, Avinash Dadaso Patil, Sanjay Dhondappa Mali, Amit Ranjit Panchal, Robert Leslie Isaacs
  • Patent number: 11370480
    Abstract: A hydraulic steering arrangement (1) is described comprising a supply port arrangement (P, T) having a pressure port (P) and a tank port (T), a working port arrangement having two working ports (L, R), a main flow path (2) having a main orifice (A1), at least one further orifice (A2, A3, A4) downstream the main orifice (A1), and a measuring motor (3), the main flow path (2) being arranged between the pressure port (P) and the working port arrangement (L, R), a return flow path (4) arranged between the working port arrangement (L, R) and the tank port (T), an amplification flow path (6) having an amplification orifice (AU) and being arranged between the pressure port (P) and the working port arrangement (L, R), and an adjustable pressure source (9) connected to the pressure port (P) and having a load sensing port (18), wherein a main drain orifice (Amd) is connected between the main flow path (2) downstream the main orifice (A1) and the return flow path (4).
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: June 28, 2022
    Assignee: Danfoss Power Solutions ApS
    Inventor: Abdul Karim Rahimzai
  • Patent number: D956837
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: July 5, 2022
    Assignee: Danfoss Power Solutions Inc.
    Inventors: Charlie Dvorak, Wondimagegn Diress, Pavol Balco, Jeffrey C. Hansell
  • Patent number: D958946
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 26, 2022
    Assignee: DANFOSS MICRO CHANNEL HEAT EXCHANGER (JIAXING) CO., LTD.
    Inventors: Jin Huan, Jin Junfeng, Lu Xiangxun
  • Patent number: D958948
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: July 26, 2022
    Assignee: Danfoss A/S
    Inventors: Su Cheong Ho, Detlef Matzen, Artem Tsvetkov