Carrier Corporation

Sikorsky Aircraft Corporation

Utc Fire and Security Corporation

United Technologies Corporation

Raytheon Technologies Corporation

Hamilton Sundstrand Corporation

Rtx Corporation

Rosemount Aerospace Limited

Utc Fire & Security Americas Corporation, Inc.

Sikorsky Aricraft Corporation

Claverham Limited

Nanjing Tica Climate Solutions Co., Ltd.

Ulf J Jonsson

Zaffir A Chaudhry

Vishnu Mohan Sishtla

Brian Ernest Wake

Fanping Sun

Andrzej Ernest Kuczek

Daniel L Gysling

Joseph V Mantese

Robert H Dold

John M Milton-Benoit

Vijaya Ramaraju Lakamraju

Frederick James Cogswell

Adam Kuenzi

Zissis A Dardas

Xia Tang

Susanne Marie Opalka

Bruce P Biederman

Alan Matthew Finn

Lawrence A Binek

Joseph Brent Staubach

Marc J Muldoon

Parmesh Verma

Ying She

John P Wesson

Tobias H Sienel

Ram Ranjan

Neelkanth S Gupte

Jean Yamanis

Scott Alan Eastman

Wayne F Larson

Joost J Brasz

Lance L Smith

Thomas D Radcliff

Vladimir Blasko

Joseph Zacchio

Larry D Burns

David Patrick Potasek

Matthew S Hill

Nicholas Charles Soldner

Paul R Brewer

Jinliang Wang

Yinshan Feng

Matthew E Lynch

David M Rockwell

Claude G Matalanis

Amit Vaidya

Yifan Qiu

Michael G O'Callaghan

Ritesh Khire

Daniel G Goberman

Scott M MacBain

Philip Andrew Varney

Jimmy Lih-Min Yeh

John D Cannata

Bryan Robert Siewert

Subramanyaravi Annapragada

William T Cousins

Mikhail B Gorbounov

Neal R Herring

Brian M Holley

Michael F Mullen

Charbel Rahhal

Bernd Heinbokel

Andrew John Collins

Stuart S Ochs

Robert K Thornton

Jeremy Wallet-Laily

Andrew Smeltz

Peter S Matteson

Nicolas Fonte

Ron Chapin

Benjamin J Blechman

Alan Marchiori

Siegfried Haaf

Jimmy Lin-Min Yeh

Michael D Arner

Mike Lindsay

Richard J Paholsky

John J Calabrese

Kitty P Liu

Matalanis Claude G G

Andrzej Earnest Kuczek

Frederick J Cogswell

A system includes a substrate and an electrical component mounted to the substrate. The system also includes a structural enclosure positioned around lateral edges of the electrical component and mounted to the substrate. The structural enclosure includes raised walls extending away from the substrate and surrounding the electrical component. The raised walls are configured to block foreign object debris from the electrical component. The system further includes a lid connected to the substrate, where the lid covers the electrical component and the structural enclosure. The system also includes a seal positioned between the structural enclosure and the lid, where the seal is configured to be compressed when the lid is connected to the substrate. In addition, the system includes a thermal interface material positioned between and contacting the electrical component and the lid.

Multi-stage partial admission axial turbine

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 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 pressure sensor includes a housing, an isolator positioned at a first end of the housing, and a first cavity formed between the first end of the housing and the isolator. The pressure sensor further includes a second cavity formed in the housing and a channel with a first end fluidly connected to the first cavity and a second end fluidly coupled to the second cavity. A pressure sensor chip is positioned in the second cavity and includes a first diaphragm positioned at a top side of the pressure sensor chip laterally outwards from the second end of the channel to prevent a fluid from jetting onto the first diaphragm.

Pressure sensor for preventing fluid jetting

A compressor system includes a compressor including a compressor inlet, a compressor outlet, and a bearing assembly, the compressor configured to compress a heat transfer fluid. An additive dispenser is fluidly coupled to the compressor upstream of the bearing assembly. The additive dispenser is configured to controllably release a volume of an additive material into the heat transfer fluid, the additive material configured to lubricate the bearing assembly. A method of lubricating a bearing assembly of compressor includes locating a volume of additive material at an additive dispenser fluidly coupled to a compressor, dispensing a portion of the additive material into the flow of heat transfer fluid at a selected time, flowing the heat transfer fluid containing the additive material to a bearing assembly of the compressor, and lubricating the bearing assembly of the compressor with the additive material.

Active filter for oil-free refrigerant compressor

A fluid damping structure includes first and second annular elements, first and second inner seals, a first outer seal, a damping chamber, a supply plenum, a fill port, and a plurality of fluid passages. The first and second inner seals are disposed radially between and are engaged with the first annular element and the second annular element. The first outer seal forms a sealing interface between the first and second annular elements. The first outer seal is disposed radially outward from the first and second inner seals. The damping chamber is defined by the first and second annular elements and the first and second inner seals. The supply plenum is disposed contiguous with an axial side of the damping chamber and extends from the second inner seal to the first outer seal. The fill port is in fluid communication with the supply plenum and a source of damping fluid.

Self-pressurized squeeze film damper

According to one aspect, a lubricant level sensing system for an actuator is provided. The lubricant level sensing system includes a pressure port in an outer housing of the actuator, a pressure sensor, and a pathway from the pressure port to the pressure sensor. The pathway establishes fluid communication between the pressure sensor and a free volume of an internal cavity of the outer housing relative to a lubricant level in the internal cavity such that the pressure sensor detects a pressure of the free volume used to derive the lubricant level.

Lubricant level sensing for an actuator

A fluid damping structure is provided that includes an inner and outer annular elements, first and second ring seals, first and second outer annular seals. The inner annular element has an outer radial surface and a plurality of annular grooves disposed in the outer radial surface. The outer annular element has an inner radial surface. A damping chamber is defined by the inner and outer annular elements, and the first and second inner ring seal. A first lateral chamber is disposed on a first axial side of the damping chamber. A second lateral chamber is disposed on a second axial side of the damping chamber. A plurality of fluid passages are disposed in at least one of the inner annular element or the inner ring seals. The fluid damping structure is configurable in an open configuration and a closed configuration.

Self pressurizing squeeze film damper

A vapor compression system () has: a centrifugal compressor () having an inlet () and an outlet (); and an electric motor () having a stator () and a rotor (). A plurality of bearings () support the rotor. A refrigerant charge comprises a base refrigerant and one or more oils. The one or more oils are present at a total concentration of 80-5000 parts per million (ppm) by weight.

Low-oil refrigerants and vapor compression systems

A bearing () comprises: an inner race (); an outer race (); and a plurality of rolling elements (). The inner race comprises a nitrogen-alloyed steel (). The outer race comprises a steel () with lower nitrogen content than said nitrogen-alloyed steel.

Hybrid bearings

A system () comprises: a vapor compression loop (); a low-pressure or medium-pressure refrigerant in the loop; a centrifugal compressor () along the vapor compression loop and comprising: a housing (); an inlet (); an outlet (); an impeller (); an electric motor () coupled to the impeller to drive rotation of the impeller; and one or more refrigerant-lubricated bearings ().

Low capacity, low-GWP, HVAC system

A heat transfer system is disclosed that includes a circulation loop of a heat transfer fluid that comprises a halocarbon. The circulation loop includes a compressor or pump that includes bearing rolling surfaces in contact with the heat transfer fluid. The bearing contact surface has a substrate a layer thereon that includes a polymer or oligomer having polar side groups and a tribofilm.

Heat transfer system with tribofilm on bearing surface

A compressor () has a housing assembly () with a suction port (), a discharge port (), and a motor compartment (). An electric motor () has a stator () within the motor compartment and a rotor () within the stator. The rotor is mounted for rotation about a rotor axis (). One or more working impellers () are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. An inlet guide vane (IGV) array () is between the suction port () and the one or more impellers (). One or more bearings () support the rotor () and/or the one or more impellers (). A purge unit () has a vapor inlet line () for receiving a refrigerant flow and a return line (A,B) for returning a contaminant-depleted refrigerant flow. A supply flowpath (A,B) for supplying refrigerant to the bearings extends from the purge unit.

Compressor bearing cooling via purge unit

Growing community of inventors

South Windsor, CT, United States of America

Ulf J Jonsson