DANFOSS (TIANJIN) LTD.
|DANFOSS (TIANJIN) LTD. Patent applications|
|Patent application number||Title||Published|
|20150044070||Oil Balancing Apparatus and Refrigeration System With Oil Balancing Apparatus - An oil balancing apparatus is for use with a first compressor and at least two second compressors. Suction pipes of the first compressor and the second compressors are connected in parallel to a suction main pipe and discharge pipes of the first compressor and the second compressors are connected in parallel to a discharge main pipe. The first compressor is in an operating state, and the second compressors are operated intermittently. The oil balancing apparatus includes a first oil balancing pipe connecting oil sumps of the second compressors in series, and a second oil balancing pipe connecting an oil sump of the first compressor to a bottom of the first oil balancing pipe. A refrigeration system is also disclosed.||02-12-2015|
|20150028237||SOLENOID VALVE - The present invention discloses a solenoid valve, it comprises: a movable core, provided with a flange at a lower end thereof; a driving assembly, in which the flange will abut against a bottom portion thereof and can move up against an upper portion thereof within a chamber of the driving assembly; a piston assembly, a central part of which seals a valve port of the solenoid valve, a periphery of which seals an annular chamber formed between the valve port and a valve body of the solenoid valve, the annular chamber being communicated to the inlet connection pipe, the piston assembly being disposed with a conducting hole at a center thereof, which is sealed by the bottom of the driving assembly; when opening the valve port, the flange of the movable core will first be moved to abut against the upper portion of the driving assembly, and then drive the driving assembly to move up in order to open the conducting hole, wherein since flow of fluid from an upper chamber above the piston assembly into an valve body outlet chamber below the piston assembly through the conducting hole via the valve port is larger than flow of fluid into the upper chamber from an inlet connection pipe of the solenoid valve, an upward force of pressure difference is generated on the piston assembly so that such upward force will enable the piston assembly to move up, thereby opening the valve port.||01-29-2015|
|20140154110||Motor Spacer, Motor Spacer Applied To Variable-Speed Compressor And Compressor - A motor spacer for a variable-speed compressor positions and supports a stator of a motor in a cylindrical section of a compressor shell. The spacer includes a ring member and a plurality of support blocks. The ring member is coaxially mounted around the stator by a clamping force. Each support block protrudes radially and outwardly from the ring member and has a hollow frame structure with a closed enclosure. Each support block has a support surface in contact with the shell. Each support surface is located on a side of an imaginary ring cylinder having a common axis with the ring member. The plurality of the support blocks are adapted to mount the motor spacer onto an inner side of the shell by a clamping force.||06-05-2014|
|20140154105||OIL BALANCING APPARATUS AND REFRIGERATION DEVICE - Embodiments of the present invention provides an oil balancing apparatus, applied to at least three compressors connected in parallel. The oil balancing apparatus includes a first oil balancing pipe and a second oil balancing pipe. The first oil balancing pipe connects oil sumps of all the compressors, and the second oil balancing pipe only connects oil sumps of oil-rich compressors but not an oil sump of an oil-starved compressor.||06-05-2014|
|20130189133||COMPRESSOR AND METHOD OF ASSEMBLING COMPRESSOR - 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.||07-25-2013|
Patent applications by DANFOSS (TIANJIN) LTD.