Carrier Corporation

Hamilton Sundstrand Corporation

Chaitanya Vishwajit Halbe

Vishnu Mohan Sishtla

Matthew Robert Pearson

William T Cousins

Michael M Joly

Xiaodan Cai

A refrigerant compressor assembly (A,B,C) includes an axial compressor (B,C,) that includes at least one axial stage. A downstream compressor () is located fluidly downstream of the axial compressor (B,C,) and includes one of a mixed-flow impeller () or a centrifugal impeller (). At least one motor () is in driving engagement with at least one of the axial compressor (B,C,) and the downstream compressor ().

Axial and downstream compressor assembly

An illustrative example embodiment of a compressor includes an inlet defining an intake passage, a plurality of inlet guide vanes, an impeller, and a plurality of swirl nozzles. Fluid flow through the plurality of inlet guide vanes into the intake passage is selectively adjustable to control fluid flow through at least the portion of the intake passage downstream of the swirl nozzles. The impeller includes a plurality of blades and directs fluid from the intake passage toward an outlet. The swirl nozzles have outlets positioned downstream of the plurality of inlet guide vanes and upstream of the impeller. The swirl nozzles are configured to introduce fluid into the intake passage to cause swirl of fluid in the intake passage between the plurality of inlet guide vanes and the impeller.

Compressor including aerodynamic swirl between inlet guide vanes and impeller blades

A mixed-flow compressor includes an impeller attached to a shaft and rotatable about a shaft axis. A vaneless diffuser is located axially downstream of the impeller and has a converging portion and a diverging portion. A vaned diffuser is located axially downstream of the vaneless diffuser.

Vaneless supersonic diffuser for compressor

An illustrative example embodiment of a compressor includes an inlet defining an intake passage, a plurality of lateral inlet guide vanes in the intake passage, and a plurality of medial inlet guide vanes in the intake passage. The lateral guide vanes are selectively oriented to alter an amount of fluid flow through a first, lateral portion of the intake passage. The medial inlet guide vanes are selectively oriented to alter an amount of fluid flow through a second, medial portion of the intake passage.

Compressor including inlet guide vanes

A compressor includes a housing. An impeller is located within the housing and rotatable about an impeller axis in a first rotational direction. A rotor section is rotatable about the impeller axis in a second rotational direction opposite the first rotational direction.

Mixed-flow compressor with counter-rotating diffuser

A centrifugal compressor includes a shaft defining an axis, an impeller mounted to the shaft for rotation about the axis, and a diffuser section including a first wall, a second wall, and an opening defined between the first wall and the second wall. The opening of the diffuser section is arranged in fluid communication with the impeller. The first wall is rotatable about the axis and rotation of the first wall about the axis is mechanically driven.

Growing community of inventors

Manchester, CT, United States of America

Chaitanya Vishwajit Halbe