Patents by Inventor Scott M. MacBain

Scott M. MacBain has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10260783
    Abstract: In one aspect, a refrigeration system is provided. The refrigeration system includes a compressor coupled to a variable frequency drive (VFD), a condenser, an evaporator, an oil separator, and an oil conditioning circuit. The oil conditioning circuit is thermally coupled to the VFD and configured to heat oil from the oil separator with heat produced by the VFD.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: April 16, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Scott M. MacBain, David M. Rockwell, Ulf J. Jonsson
  • Publication number: 20180216619
    Abstract: A compressor (20) comprises: a housing assembly (22) having a plurality of ports including a suction port (24) and a discharge port (26); a male rotor (30) mounted for rotation about an axis (500); a female rotor (32) enmeshed with the male rotor and mounted in the housing for rotation about an axis (502) for drawing a flow from the e suction port, compressing the flow, and discharging the compressed flow through the discharge port. The housing assembly comprises: a motor case (54); and a cover (60) bearing the suction port. The cover comprises a unitary piece forming: a mounting portion (63) mounted to an adjacent end (55) of the motor case, said adjacent end being large enough to pass the motor; and a fitting portion (62) extending to a rim (66) at the suction port and bearing an external groove (200).
    Type: Application
    Filed: August 11, 2016
    Publication date: August 2, 2018
    Applicant: Carrier Corporation
    Inventors: Scott M. MacBain, David M. Rockwell, Benjamin J. Blechman
  • Publication number: 20170248352
    Abstract: In one aspect, a refrigeration system is provided. The refrigeration system includes a compressor coupled to a variable frequency drive (VFD), a condenser, an evaporator, an oil separator, and an oil conditioning circuit. The oil conditioning circuit is thermally coupled to the VFD and configured to heat oil from the oil separator with heat produced by the VFD.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 31, 2017
    Inventors: Scott M. MacBain, David M. Rockwell, Ulf J. Jonsson
  • Patent number: 8250879
    Abstract: A dual refrigeration circuit, watercooled chiller has its respective evaporators and condensers interconnected by waterboxes, with each waterbox having an inlet flow and outlet flow connection, and with three passages interconnected with the respective evaporators/condensers of the first and second circuit, and with each of the condensers/evaporators having return bends at their ends to provide a two-pass flow arrangement. The flow in the condenser waterbox passes into a first passage and then in one direction to the condenser of one circuit while the flow into the evaporator waterbox passes into a first passage and then in the opposite direction to one of the circuit evaporators. In this manner, a series counterflow arrangement with two water passes is achieved.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: August 28, 2012
    Assignee: Carrier Corporation
    Inventors: Scott M. MacBain, Michael A. Stark
  • Patent number: 7850437
    Abstract: A reed valve having a plurality of tips and associated recesses is provided as a compressor suction valve with each valve tip coacting with a suction port. The recesses are located in the housing structure defining the cylinder of the compressor and are spaced a distance on the order of 0.1 inches from the tips when the suction valve is closed. The valve is secured on one side of the cylinder and each tip is located along a line from the center of the cylinder through the center, or axis, of a suction port.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: December 14, 2010
    Assignee: Carrier Corporation
    Inventors: Scott M. MacBain, Ronald J. Duppert
  • Publication number: 20100115984
    Abstract: A dual refrigeration circuit watercooled chiller has its respective evaporators and condensers interconnected by waterboxes such that the first circuit tubes discharge into the respective waterbox and the flow of water then passes from the respective waterboxes to the respective evaporator/condenser tubes of the second circuit. Instrumentation is attached to the waterboxes to enable the measurement of the leaving temperature differential to provide improved control. Since the first and second circuit tubes are separate and independent, both serviceability and flexibility in design are substantially enhanced.
    Type: Application
    Filed: October 10, 2006
    Publication date: May 13, 2010
    Applicant: Carrier Corproation
    Inventors: Scott M. MacBain, Michael A. Stark, Robert Hong Leung Chiang
  • Publication number: 20100107683
    Abstract: A dual refrigeration circuit, watercooled chiller has its respective evaporators and condensers interconnected by waterboxes, with each waterbox having an inlet flow and outlet flow connection, and with three passages interconnected with the respective evaporators/condensers of the first and second circuit, and with each of the condensers/evaporators having return bends at their ends to provide a two-pass flow arrangement. The flow in the condenser waterbox passes into a first passage and then in one direction to the condenser of one circuit while the flow into the evaporator waterbox passes into a first passage and then in the opposite direction to one of the circuit evaporators. In this manner, a series counterflow arrangement with two water passes is achieved.
    Type: Application
    Filed: October 10, 2006
    Publication date: May 6, 2010
    Inventors: Scott M. MacBain, Michael A. Stark
  • Publication number: 20080277008
    Abstract: A reed valve having a plurality of tips and associated recesses is provided as a compressor suction valve with each valve tip coacting with a suction port. The recesses are located in the housing structure defining the cylinder of the compressor and are spaced a distance on the order of 0.1 inches from the tips when the suction valve is closed. The valve is secured on one side of the cylinder and each tip is located along a line from the center of the cylinder through the center, or axis, of a suction port.
    Type: Application
    Filed: May 6, 2008
    Publication date: November 13, 2008
    Applicant: Carrier Corporation
    Inventors: Scott M. MacBain, Ronald J. Duppert
  • Patent number: 7390176
    Abstract: A reed valve having a plurality of tips and associated recesses is provided as a compressor suction valve with each valve tip coacting with a suction port. The recesses are located in the housing structure defining the cylinder of the compressor and are spaced a distance on the order of 0.1 inches from the tips when the suction valve is closed. The valve is secured on one side of the cylinder and each tip is located along a line from the center of the cylinder through the center, or axis, of a suction port.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: June 24, 2008
    Assignee: Carrier Corporation
    Inventors: Scott M. MacBain, Ronald J. Duppert
  • Patent number: 6668580
    Abstract: Turning vanes are located in the suction and discharge line elbows of a refrigerant circuit and at the entrance to the condenser.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: December 30, 2003
    Assignee: Carrier Corporation
    Inventor: Scott M. MacBain
  • Patent number: 6658888
    Abstract: Efficiency of a transcritical vapor compression system is increased by compressor cooling. In one embodiment, a stream of cooling fluid accepts compressor motor heat. The heated cooling fluid merges with the fluid medium which accepts heat from the refrigerant in the gas cooler and exits the system, usefully transferring the heat out of the system. Additionally, as the refrigerant in the compressor is cooled, the density and the mass flow rate of the suction gas in the compressor is increased, increasing efficiency. Alternatively, an intercooler positioned between stages of a multi-stage compressor exchanges heat with the same fluid medium which accepts heat from the refrigerant in the gas cooler. After accepting heat from the refrigerant in the intercooler, the heated fluid medium exits the system, usefully transferring heat from the system.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: December 9, 2003
    Assignee: Carrier Corporation
    Inventors: Shailesh Manohar, Scott M. MacBain, Tobias H. Sienel, Young Kyu Park
  • Publication number: 20030192339
    Abstract: Turning vanes are located in the suction and discharge line elbows of a refrigerant circuit and at the entrance to the condenser.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventor: Scott M. Macbain
  • Publication number: 20030192338
    Abstract: Efficiency of a transcritical vapor compression system is increased by compressor cooling. In one embodiment, a stream of cooling fluid accepts compressor motor heat. The heated cooling fluid merges with the fluid medium which accepts heat from the refrigerant in the gas cooler and exits the system, usefully transferring the heat out of the system. Additionally, as the refrigerant in the compressor is cooled, the density and the mass flow rate of the suction gas in the compressor is increased, increasing efficiency. Alternatively, an intercooler positioned between stages of a multi-stage compressor exchanges heat with the same fluid medium which accepts heat from the refrigerant in the gas cooler. After accepting heat from the refrigerant in the intercooler, the heated fluid medium exits the system, usefully transferring heat from the system.
    Type: Application
    Filed: April 10, 2002
    Publication date: October 16, 2003
    Inventors: Shailesh Manohar, Scott M. MacBain, Tobias H. Sienel, Young Kyu Park
  • Publication number: 20030068245
    Abstract: A valve tip and its associated recess are provided along each line from the center of the cylinder through the center, or axis, of a suction port.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 10, 2003
    Inventors: Scott M. MacBain, Ronald J. Duppert
  • Patent number: 6540492
    Abstract: A compressor piston has protrusions which extend upwardly into discharge ports to minimize clearance at the end of the compression stroke. The protrusions fit into circumferentially isolated discharge ports, and each of the ports are associated with reed valves. Preferably a cutout portion is formed into the piston head to allow clearance for movement of the suction valve. The suction valve is positioned on an inner face of a valve plate and the discharge reed valves are positioned on an outer face. The protrusions are preferably frustro-conical.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: April 1, 2003
    Assignee: Carrier Corporation
    Inventors: Peter F. Kaido, Scott M. MacBain, Ronald J. Duppert
  • Publication number: 20020146339
    Abstract: A compressor piston has protrusions which extend upwardly into discharge ports to minimize clearance at the end of the compression stroke. The protrusions fit into circumferentially isolated discharge ports, and each of the ports are associated with reed valves. Preferably a cutout portion is formed into the piston head to allow clearance for movement of the suction valve. The suction valve is positioned on an inner face of a valve plate and the discharge reed valves are positioned on an outer face. The protrusions are preferably frustro-conical.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 10, 2002
    Applicant: Carrier Corporation
    Inventors: Peter F. Kaido, Scott M. MacBain, Ronald J. Duppert