Patents Assigned to Danfoss
  • COMPRESSOR AND METHOD OF ASSEMBLING COMPRESSOR
    Publication number: 20130189133
    Abstract: A compressor and a method of assembling the compressor are provided. The compressor includes: a shell; a motor arranged in the shell, the motor having a stator, a spacer mounted with a first bearing therein, a drive shaft supported by the first bearing and a rotor fixed onto the drive shaft; a low bearing support; a positioning member positioning the second bearing and being connected to the low bearing support; and a second bearing connected to the positioning member and/or the low bearing support and supporting the drive shaft. Furthermore, the positioning member may be removed from or maintained in the compressor after it is assembled. The present invention can avoid the adverse effects of the gravity of the rotor and the drive shaft and/or the magnetic force between the rotor and the stator on positioning the bearings and the drive shaft and can improve positioning accuracy and assembling efficiency.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 25, 2013
    Applicant: DANFOSS (TIANJIN) LTD.
    Inventor: Danfoss (Tianjin) Ltd.
  • Fluid cooling system
    Patent number: 8490681
    Abstract: The invention provides a fluid cooling system comprising a heat exchanger with an outer wall forming a chamber with an inlet and an outlet for circulating a heat exchange medium in the chamber. The chamber has an opening towards the component which is to be cooled, and to protect the component, the opening is closed by a flexible wall which is attached to the outer wall. To protect the cover and the component against overload, the flexible wall is attached to an inner wall inside the chamber. The cooling system could be applied to electronic systems, e.g. for cooling a DCB substrate or similar electronic components.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: July 23, 2013
    Assignee: Danfoss Silicon Power GmbH
    Inventors: Ronald Eisele, Klaus Kristen Olesen
  • METHOD OF ACTUATING A WIRELESS SENSOR OF ROAD CONSTRUCTION EQUIPMENT
    Publication number: 20130180100
    Abstract: A method of actuating a wireless sensor of road construction equipment. A bracket is secured to the road construction equipment that has a magnet and is able to receive a wireless sensor. An actuator is disposed within the housing of the wireless sensor that reacts to the magnetic field created by the magnet such that when the wireless sensor is attached to the bracket the sensor is operable and when detached from the bracket no longer operates.
    Type: Application
    Filed: January 12, 2012
    Publication date: July 18, 2013
    Applicant: SAUER-DANFOSS INC.
    Inventor: Jack Zeng
  • NEUTRAL SETTING DEVICE FOR AN ADJUSTABLE HYDRAULIC MACHINE
    Publication number: 20130174925
    Abstract: The invention relates to a neutral setting device of an adjustable hydraulic machine, in particular the adjustment of the neutral setting of a servo valve. The present invention relates in particular to servo adjustment devices with mechanically adjustable control pistons, wherein the necessary force can be applied mechanically, electromagnetically, pneumatically or hydraulically. The invention relates to a neutral setting device of an adjustable hydraulic machine with a housing in which a mounted input shaft is arranged, at which on one end a torque can be applied for turning the input shaft around an axis. On a second end a cylindrical extension is arranged eccentrically parallel to the axis. An adjustable control piston for opening and closing hydraulic fluid openings for application of pressure of a servo piston adjusts the hydraulic machine with respect to its delivery volume.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 11, 2013
    Applicant: SAUER-DANFOSS GmbH & Co. OHG
    Inventor: SAUER-DANFOSS GmbH & Co. OHG
  • NEUTRAL SETTING APPARATUS OF AN ADJUSTABLE HYDRAULIC MACHINE
    Publication number: 20130174723
    Abstract: The invention relates to a neutral setting apparatus for adjustable hydraulic machines, in particular the adjustment of the neutral position of a servo valve. In particular, the invention relates to servo adjustment devices with mechanically adjustable control pistons, wherein the forces necessary for this can be applied mechanically, electro-magnetically, pneumatically or hydraulically. The invention relates to a neutral setting apparatus of an adjustable hydraulic machine, with a housing in which a mounted input shaft is arranged, to one end of which a torque can be applied for rotating the input shaft about an axis. Thus providing a robust and cost-effective setting mechanism for the neutral position of a servo valve.
    Type: Application
    Filed: May 10, 2012
    Publication date: July 11, 2013
    Applicant: SAUER-DANFOSS INC.
    Inventors: Reinhardt Thoms, Peter Bahna, Sebastian Bujna, Peter Chlebana, Miroslav Chmatil, Michael Knazek
  • COMPRESSION DEVICE, AND A THERMODYNAMIC SYSTEM COMPRISING SUCH A COMPRESSION DEVICE
    Publication number: 20130177404
    Abstract: This compression device comprises first and second compressors mounted in parallel, a suction line intended to be connected to an outlet of an evaporator, first and second suction conduits arranged for putting the suction line respectively in communication with the admission orifices of the first and second compressors, and an oil level equalization conduit connecting the oil pans of the first and second compressors. The compression device further comprises an oil separator mounted on the suction line or on the second suction conduit, and an oil return conduit arranged for connecting an oil outflow orifice of the oil separator to the oil pan of the first compressor.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 11, 2013
    Applicant: DANFOSS COMMERCIAL COMPRESSORS
    Inventor: DANFOSS COMMERCIAL COMPRESSORS
  • Filter loading
    Patent number: 8480373
    Abstract: A pumping system for moving water of a swimming pool includes a water pump, a variable speed motor, and a filter arrangement in fluid communication with the pump. The pumping system can also include means for determining a load value indicative of an unclogged filter that permits movement of water through the filter arrangement, means for determining a load value indicative of a clogged filter that inhibits movement of water through the filter arrangement, and means for determining a performance value of the pumping system. The pumping system also includes means for determining a relative loading value of the filter arrangement, means for displaying the relative loading value, and means for controlling the motor in response to the relative loading value. In one example, the load values and performance value can include flow pressure values. A method of moving water of a swimming pool is also disclosed.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: July 9, 2013
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Low Power Drives
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Ronald B. Robol, Gert Kjaer, Einar Kjartan Runarsson
  • Magnetic control device
    Patent number: 8482523
    Abstract: A control device having an elongated shaft, a C-shaped magnet, and an anti-rotation pin. The magnet and the anti-rotation pin are encapsulated in a spherical member. The C-shaped magnet has opposing ends defining an open slot along the C-shaped main body. The anti-rotation pin extends through the slot and connects to the shaft.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: July 9, 2013
    Assignee: Sauer-Danfoss Inc.
    Inventors: Stanley N. Didier, Dale M. Gulick
  • METHOD AND DEVICE FOR DETERMINING THE STATE OF AN ELECTRICALLY CONTROLLED VALVE
    Publication number: 20130169287
    Abstract: The invention relates to a method (3) for determining (33) a state characteristic value (28) of a electric device (4) controlled by a temporally variable control signal (17). The at least one state characteristic value (28) is determined using the frequency of the temporally variable control signal (17) and/or the switching characteristics of the temporally variable control signal (17).
    Type: Application
    Filed: August 4, 2011
    Publication date: July 4, 2013
    Applicant: SAUER-DANFOSS GMBH & CO. OHG
    Inventors: Sven Fink, Matt Saterbak
  • HEAT EXCHANGER AND BAFFLE THEREOF
    Publication number: 20130160981
    Abstract: A baffle and a heat exchanger with the baffle are provided. The baffle is disposed inside a header pipe of the heat exchanger, and divides the header pipe into two sections along the axial direction. The baffle supports a refrigerant duct which is set inside the header pipe along the axial direction. The baffle is a split type, and includes a first baffle member and a second baffle member connected together via an engagement structure. The installation efficiency of the baffle and the installation quality of the refrigerant duct are enhanced, and the reliability of the heat exchanger is also improved.
    Type: Application
    Filed: January 11, 2011
    Publication date: June 27, 2013
    Applicants: DANFOSS A/S, SANHUA HOLDING GROUP CO., LTD.
    Inventors: Feng Wang, Jianlong Jiang, Linjie Huang
  • Priming protection
    Patent number: 8469675
    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 determines an actual power consumption of the motor and compares the actual power consumption to a reference power consumption. The controller also determines that the pump is in an unprimed condition if the actual power consumption is less than the reference power consumption and that the pump is in a primed condition if the actual power consumption is at least equal to the reference power consumption.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: June 25, 2013
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Low Power Drives
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Gert Kjaer, Florin Lungeanu
  • Sensor system for construction equipment having wireless sonic sensor system
    Patent number: 8469630
    Abstract: A sensor system for road construction equipment. The system includes a first conveyor for transporting material to a first auger that is positioned to receive the material. A first feeder sensor associated with the first conveyor is in over-the-air communication with a receiver to communicate the height of a material on the conveyor such that a master controller that is electrically connected to the receiver can regulate the amount of flow of material to the first conveyor.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: June 25, 2013
    Assignee: Sauer-Danfoss Inc.
    Inventors: Michael R. Olson, Jack Zeng
  • Check valve pump with electric bypass valve
    Patent number: 8469677
    Abstract: A hydraulic power unit having a power shaft that rotates a cam. The cam actuates a piston assembly that contains a plurality of pistons wherein each piston has a piston body and fluid working chamber. An electrically actuated bypass valve is fluidly connected and in communication between an outlet check valve and a fluid working chamber of each piston such that when actuated the electrically actuated bypass valve directs fluid away from the outlet port into a reservoir to be returned to an inlet port.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: June 25, 2013
    Assignee: Sauer-Danfoss Inc.
    Inventor: Michael D. Gandrud
  • OIL INJECTION DEVICE FOR VARIABLE-SPEED SCROLL REFRIGERATION COMPRESSOR
    Publication number: 20130156612
    Abstract: The oil injection device according to the invention includes an oil pump designed to be rotationally coupled to the electric motor of a compressor and including inlet and outlet ports, an oil injection duct connected to the first outlet port and designed to supply a compression stage of the compressor with oil, and an oil return duct connected to the first outlet port and designed to return the oil into an oil sump of the compressor. The pressure losses in the oil injection duct are primarily singular pressure losses proportional to the square of the oil flow rate passing through the oil injection duct. The pressure losses in the oil return duct are primarily pressure losses due to friction proportional to the oil flow rate passing through the oil return duct.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 20, 2013
    Applicant: DANFOSS COMMERCIAL COMPRESSORS
    Inventor: DANFOSS COMMERCIAL COMPRESSORS
  • VARIABLE-SPEED SCROLL REFRIGERATION COMPRESSOR
    Publication number: 20130156623
    Abstract: The compressor includes a sealed enclosure containing a compression stage, an electric motor having a stator and a rotor, an oil pump rotationally coupled to the rotor, including an oil inlet port connected to an oil sump, and control means arranged to command the operation of the motor in a start-up mode in which the rotor is rotated at a first speed of rotation included in a first speed range, and a normal operating mode in which the rotor is rotated at a second speed of rotation included in a second speed range higher than the first speed range. The compressor includes an oil injection device having an oil injection duct connected to a first oil outlet port of the oil pump and arranged to supply the compression stage with oil.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 20, 2013
    Applicant: DANFOSS COMMERCIAL COMPRESSORS
    Inventor: DANFOSS COMMERCIAL COMPRESSORS
  • SENSING SYSTEM FOR ROAD CONSTRUCTION EQUIPMENT
    Publication number: 20130158812
    Abstract: A sensing system for road construction equipment that includes a mounting bracket secured to a road construction vehicle that has an RFID tag. A wireless sensor is provided with an RFID reader so that when the wireless sensor is secured in the mounting bracket the RFID scanner is adjacent the RFID tag and scans and reads the RFID tag sending location information of the wireless sensor to a master controller.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Applicant: SAUER-DANFOSS INC.
    Inventors: Michael R. Olson, Jack Zeng
  • Method of assembling a refrigerating compressor
    Patent number: 8454332
    Abstract: A compressor comprising a sealed chamber delimited laterally by a shell, a drive shaft housed in the shell and guided relative to the other parts of the compressor via at least one bearing provided in a bearing support fixed to the internal wall of the shell. The method comprises steps consisting in supplying a shell have, in the fixing plane of the bearing support, an oval section comprising a small axis to which the bearing support is intended to be mounted, exerting a pressure on the shell in order to elastically deform it so as to increase the length of its small axis, inserting and positioning the bearing support in the fixing plane of the latter, and ceasing to exert a pressure on the shell so that the latter tends to elastically return to its original form and grip the bearing support.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: June 4, 2013
    Assignee: Danfoss Commercial Compressors
    Inventors: David Genevois, Pierre Ginies, Jean M Pfister
  • COMPRESSION DEVICE AND A THERMODYNAMIC SYSTEM COMPRISING SUCH A COMPRESSION DEVICE
    Publication number: 20130136622
    Abstract: A compression device includes a first compressor and a second compressor mounted in parallel, each compressor including a leakproof enclosure including a low pressure portion containing a motor and an oil sump, an oil level equalization conduit putting into communication the oil sumps of the first and second compressors, and control means adapted for controlling the starting and the stopping of the first and second compressors. The first compressor includes first detection means coupled with the control means and adapted for detecting an oil level in the oil sump of the first compressor. The control means are adapted for controlling the stopping of the second compressor when the oil level detected by the first detection means falls below a first predetermined value.
    Type: Application
    Filed: November 30, 2012
    Publication date: May 30, 2013
    Applicant: DANFOSS COMMERCIAL COMPRESSORS
    Inventor: Danfoss Commercial Compressors
  • SCROLL REFRIGERATION COMPRESSOR
    Publication number: 20130136642
    Abstract: The scroll refrigeration compressor according to the invention includes a sealed enclosure at least partially defining a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber. The discharge valve includes a valve body, a valve seat, and a discharge check valve movable between a covering position and a released position. The discharge valve includes deflection means positioned in the valve body and arranged to orient the flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve.
    Type: Application
    Filed: November 30, 2012
    Publication date: May 30, 2013
    Applicant: DANFOSS COMMERCIAL COMPRESSORS
    Inventor: DANFOSS COMMERCIAL COMPRESSORS
  • Cooling device for a plurality of power modules
    Patent number: 8451609
    Abstract: The invention relates to a cooling device for a plurality of power modules (16), comprising a heat-conducting body (15) through which a coolant flows. The cooling device comprises external cooling ribs (14) on a first housing shell of the body through which a coolant flows for receiving the plurality of power modules adjacent to each other. Each individual cooling rib is aligned to come into fixed heat-conducting contact on at least one upper or lower side of one of the plurality of power modules, and the housing shell, on the inner side in the region of the respective cooling rib(s), comprises means for the fluidic communication with the volume of the coolant in the inside the body through which the coolant flows.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: May 28, 2013
    Assignee: Danfoss Silicon Power GmbH
    Inventors: Klaus Kristen Olesen, Lars Paulsen, Jens Klinghagen