Abstract: A system comprising: a heat exchanger configured to be thermally coupled to a cooling system of an electric vehicle, wherein the cooling system is thermally coupled to at least two subsystems of a plurality of subsystems of the electric vehicle, wherein each subsystem of the at least two subsystems is configured to be maintained at a different threshold temperature level; a sealed subsystem thermally coupled to the heat exchanger; and a phase changing material (PCM) disposed within the sealed subsystem, wherein the PCM is configured to transition, via an at least partial transition between a first state of matter and a second state of matter, thermal energy between the PCM and the cooling system via the heat exchanger to maintain each subsystem of the at least two subsystems at a respective threshold temperature level.

Abstract: In some aspects, the techniques described herein relate to a method of manufacturing a shrouded impeller, including: arranging a shell relative to an impeller, wherein the impeller includes a plurality of blades, wherein the shell includes a plurality of slots, and wherein the arranging step includes aligning each of the slots with a tip of a respective one of the blades of the impeller; applying brazing paste to each of the tips by using the slots to direct the brazing paste to the tips; arranging a shroud relative to the impeller; and joining the impeller and shroud using a brazing technique.

Abstract: A refrigerant system according to an example of this disclosure includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. A heat exchanger is arranged to cool electronic components. The heat exchanger has a cooling line, which is configured to receive refrigerant from the main refrigerant loop and a heat sink in communication with air surrounding the electronic components.

Abstract: The present invention belongs to the technical field of antibacterial drugs, and discloses a pyrrolylacylpiperidylamine compound and use thereof. The present invention in particular relates to a pyrrolylacylpiperidylamine compound and a pharmaceutically acceptable salt thereof, and use thereof in the preparation of a medicament for resisting infections with bacteria, mycoplasma or chlamydia.

Abstract: This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

Abstract: The disclosure relates to a sealing device comprising a sealing device comprising an annular substrate comprising an inner periphery defining a shaft hole; and a plurality of carbon nanotubes extending outwardly from and around the inner periphery into the shaft hole. In various practices, a plurality of annular metal mesh substrates is axially interposed and sandwiched between the first annular frame and a second annular frame, with a portion of the substrates comprising the carbon nanotubes extending outwardly from and around the inner periphery into the shaft hole. In another practice, the a solid annular metal substrate is used and a plurality of carbon nanotubes that extend into the shaft hole each have a first end attached to the inner periphery whereby the second end extends into the shaft hole. The device is useful in e.g. gas compressors.

Abstract: A centrifugal compressor includes a first stage and a second stage. At least one of the first stage and the second stage includes an impeller and a shroud spaced from the impeller and configured to guide a fluid flow through the impeller. The shroud is selectively moveable between an engaged position and a disengaged position.

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a rotor configured to rotate with respect to a stator, the stator having an abradable portion. At least one labyrinth seal is between the rotor and the stator, wherein the labyrinth seal comprises a plurality of teeth extending from the rotor toward the abradable portion.

Abstract: A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component.

Abstract: This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

Abstract: An electric machine according to an exemplary aspect of the present disclosure includes, among other things, an electric machine including a rotor having a sleeve radially outside a permanent magnet. Further, the sleeve includes at least one magnetic arc segment and at least one non-magnetic arc segment.

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a mixed compression stage having both axial and radial components arranged along a main flow path, and a radial compression stage having an impeller with a plurality of vanes arranged in the main flow path downstream of the mixed compression stage. The impeller is configured to rotate about an axis and has an outlet downstream of the vanes. A movable diffuser is arranged at the outlet, and the movable diffuser is configured to vary an area of the outlet.

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a floating ring seal having a nose configured to contact a housing. Further, a low friction coating including carbon nanotubes (CNTs) is applied to one or both of the nose and the housing. In another aspect of this disclosure, the floating ring seal has first and second noses configured to contact the housing, and the first nose is radially spaced-apart from the second nose.

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a mixed compression stage having both axial and radial components arranged along a main flow path, and a radial compression stage having an impeller with a plurality of vanes arranged in the main flow path downstream of the mixed compression stage. The impeller is configured to rotate about an axis and has an outlet downstream of the vanes. A movable diffuser is arranged at the outlet, and the movable diffuser is configured to vary an area of the outlet.

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, an impeller configured to rotate about an axis, and a shroud. The impeller has a plurality of blades. The shroud is secured to the impeller with an adhesive at tips of the plurality of blades.

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a rotor configured to rotate with respect to a stator, the stator having an abradable portion. At least one labyrinth seal is between the rotor and the stator, wherein the labyrinth seal comprises a plurality of teeth extending from the rotor toward the abradable portion.

Abstract: A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component.

Abstract: A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component.

Abstract: A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component.

Abstract: A centrifugal compressor includes a first stage and a second stage. At least one of the first stage and the second stage includes an impeller and a shroud spaced from the impeller and configured to guide a fluid flow through the impeller. The shroud is selectively moveable between an engaged position and a disengaged position.