Carrier Corporation

Amit Vaidya

Zaffir A Chaudhry

Ulf J Jonsson

Paul J Flanigan

David M Rockwell

Yifan Qiu

Charbel Rahhal

Scott M MacBain

Jeremy Wallet-Laily

Nicolas Fonte

Peter J Pileski

Benjamin J Blechman

Brandon Schwoeppe

Steven E Von Borstel

David Okhman

Joshua S Lavoie

Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.

Direct drive refrigerant screw compressor with refrigerant lubricated rotors

A screw compressor includes an outlet housing. The outlet housing includes a passage that is configured to communicate compressed fluid from a screw rotor to a discharge. A removable cover plate is configured to cover a portion of the passage. A method of varying a volume index for a screw compressor is also disclosed.

Screw compressor with adjustable passage

Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; wherein, for each rotor, the compressor includes: a plurality of bearing packs disposed within a respective plurality of bearing chambers; a working fluid disposed within each of the plurality of bearing chambers, the working fluid providing oil-free lubrication to the plurality of bearing packs; a plurality of bearing lubrication ports extending through the housing and into each of the plurality of bearing chambers, and configured for injecting the working fluid into each of the plurality of bearing chambers when the compressor is running.

Direct drive refrigerant screw compressor with refrigerant lubricated bearings

A refrigeration system includes a compressor for compressing a refrigerant, a condenser for cooling the refrigerant, an evaporator for heating the refrigerant, and a lubrication system for providing a lubricant mist to a movable component of the compressor. The lubrication system includes an ejector arranged in fluid communication with the compressor and the evaporator, wherein the lubricant mist is carried by the refrigerant to the movable component.

Enhanced method of lubrication for refrigeration compressors

A screw compressor includes a housing, a first rotor rotatable about a first axis relative to the housing, and a second rotor rotatable about a second axis relative to the housing. The second rotor is enmeshed with the first rotor. A motor is embedded within the first rotor such that the motor is coaxial with the first axis.

Screw compressor with external motor rotor

A compressor () has a male rotor (), a female rotor (), and a housing (). The housing has a first bore () and a second bore () respectively accommodating portions of the male rotor and the female rotor. The housing has an inlet (), an outlet (), an economizer port () along at least one of the first bore and the second bore, and an external port () communicating with the economizer port. The housing has a chamber () between the economizer port and the external port having a volume of at least 0.8 liter.

Screw compressor economizer plenum for pulsation reduction

A compressor () comprises a housing () having a first port () and a second port (). A male rotor () has a working portion () having a plurality of lobes () of a count (N) and at least a first shaft portion () protruding beyond a first end () of the male rotor working portion and mounted for rotation about a first axis (). A female rotor () has a working portion () having a plurality of lobes () of a count (N) and mounted for rotation about a second axis () so as to be enmeshed with the male rotor working portion. An electric motor () is within the housing and has a stator () and a rotor () mounted to the first shaft portion. The compressor has no additional compressor rotors. The lobe count of the male rotor is less than the lobe count of the female rotor. A combined lobe count (N+N) is at least fifteen.

Growing community of inventors

Jamesville, NY, United States of America

Amit Vaidya