Patents by Inventor Michael F. Taras

Michael F. Taras 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).

  • Operation and control of tandem compressors and reheat function
    Patent number: 9103575
    Abstract: A refrigerant system control operates tandem compressors. If one of the monitored system conditions does not change as each of the tandem compressors or associated components is brought on line, then a determination is made that the respective component is malfunctioning. A refrigerant system can also be additionally equipped with other functions and components, such as variable speed drive, economizer circuit, unloader bypass, and reheat circuit. In case of a reheat circuit, the system can have single or multiple compressors. The control algorithm can also be updated such that that particular malfunctioning component is eliminated from the operational sequence.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: August 11, 2015
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Alexander Lifson
  • HEAT EXCHANGER FOR USE IN A CONDENSING GAS-FIRED HVAC APPLIANCE
    Publication number: 20150204579
    Abstract: A secondary heat exchanger for use in a condensing gas-fired HVAC appliance including at least one conduit, including a non-circular transverse cross-sectional geometry. In one instance, the at least one conduit penetrates and is in contact with at least one plate fin. In another instance a fin is affixed to the at least one conduit.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 23, 2015
    Inventors: Michael L. Brown, Michael F. Taras, Brian D. Videto
  • DUAL POWDER COATING FOR ALUMINUM HEAT EXCHANGERS
    Publication number: 20150198389
    Abstract: A method includes applying a first powder to an aluminum article and heating the first powder to form a first layer on the aluminum article providing mechanical strength, corrosion durability and bonding potential. The method also includes applying a second powder to the aluminum article and heating the second powder to form a second layer on the aluminum article protecting the aluminum article from ultraviolet radiation. A coated article includes an aluminum substrate, an epoxy layer and a topcoat layer. The epoxy layer promotes adhesion, enhances corrosion durability and provides mechanical strength, and is formed by applying a first powder containing an epoxy to the aluminum substrate and curing the first powder. The topcoat layer provides resistance to ultraviolet radiation and environmental contaminants, and is formed by applying a second powder to the aluminum substrate and curing the second powder.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 16, 2015
    Inventors: Mark R. Jaworowski, Michael F. Taras
  • Dual powder coating method for aluminum substrates
    Patent number: 8993070
    Abstract: A method includes applying a first powder to an aluminum article and heating the first powder to form a first layer on the aluminum article providing mechanical strength, corrosion durability and bonding potential. The method also includes applying a second powder to the aluminum article and heating the second powder to form a second layer on the aluminum article protecting the aluminum article from ultraviolet radiation. A coated article includes an aluminum substrate, an epoxy layer and a topcoat layer. The epoxy layer promotes adhesion, enhances corrosion durability and provides mechanical strength, and is formed by applying a first powder containing an epoxy to the aluminum substrate and curing the first powder. The topcoat layer provides resistance to ultraviolet radiation and environmental contaminants, and is formed by applying a second powder to the aluminum substrate and curing the second powder.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: March 31, 2015
    Assignee: Carrier Corporation
    Inventors: Mark R. Jaworowski, Michael F. Taras
  • Automated brazing system
    Patent number: 8960522
    Abstract: An automated brazing system by which an apparatus is conveyed along a path defined through a brazing zone is provided and includes first and second sets of burners disposed within the brazing zone at first and second opposing sides of the path, respectively, to heat the components of the apparatus substantially uniformly at the first and second sides and to heat the components of the apparatus substantially uniformly along the brazing zone, such that each side of each of the components is heated to a substantially similar temperature as each side of each of the other components.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 24, 2015
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Zhihui Xiao, Luis Felipe Avila, Jeffrey L. Jones
  • MULTIPLE TUBE BANK HEAT EXCHANGER ASSEMBLY AND FABRICATION METHOD
    Publication number: 20150027677
    Abstract: A multiple tube flattened heat exchange tube assembly includes a first flattened tube segment, a second flattened tube segment and a web member interconnecting the trailing edge of the first flattened tube segment and the leading edge of the second flattened tube segment. The web member may be provided with one or more retained water drainage openings. A multiple slab flattened tube heat exchanger is provided that includes a plurality of the multiple tube flattened heat exchange tube assemblies disposed in spaced parallel relationship. A method for fabricating a flattened tube finned heat exchanger having a first heat exchanger slab and a second heat exchanger slab is also disclosed.
    Type: Application
    Filed: January 29, 2013
    Publication date: January 29, 2015
    Inventors: Michael F. Taras, Arindom Joardar, Mel Woldesemayat, Bruce J. Poplawski
  • Refrigerant system performance enhancement by subcooling at intermediate temperatures
    Patent number: 8925336
    Abstract: A refrigerant system operates in an environment defined by three distinct temperature levels, such as, for instance, the outdoor ambient temperature level, the indoor temperature level and the refrigeration temperature level. The refrigerant system is provided with an air-to-refrigerant heat exchanger located within the general indoor environment and connected to receive the flow of refrigerant from a heat rejection heat exchanger. The air-to-refrigerant heat exchanger gives off heat to the indoor air and in the process further cools the refrigerant flowing to an expansion device to thereby increase the cooling effect provided by an evaporator to the refrigeration area. Provisions are also made to partially or entirely bypass the air-to-refrigerant heat exchanger and/or the heat rejection heat exchanger, on a selective basis.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: January 6, 2015
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • METHOD FOR FABRICATING FLATTENED TUBE FINNED HEAT EXCHANGER
    Publication number: 20150000133
    Abstract: A method is disclosed for assembling a flattened tube multiple tube bank heat exchanger that includes a first tube bank and a second tube bank, each bank including a plurality tube segments extending longitudinally in spaced parallel relationship. A spacer clip is installed on a longitudinally extending edge of each heat exchange tube segment arrayed in a first layer of tube segments. A plurality of heat exchange tube segments are arrayed in a second layer in engagement with the spacer clips installed on the tube segments of the first layer.
    Type: Application
    Filed: January 29, 2013
    Publication date: January 1, 2015
    Inventors: Michael F. Taras, Arindom Joardar, Melkamu Woldesemayat, Bruce J. Poplawski
  • Pulse width modulated system with pressure regulating valve
    Patent number: 8904813
    Abstract: A pulse width modulation control is provided for a suction valve on a suction line, delivering refrigerant into a housing shell of a compressor. When the suction valve is closed, the pressure within the housing shell can become very low. Thus, a pressure regulator valve is included within the refrigerant system to selectively deliver a limited amount of refrigerant into the housing shell when the suction valve is closed. The delivery of this limited amount of refrigerant ensures that a specified pressure is maintained within the housing shell to achieve the most efficient operation while at the same time preventing problems associated with damage to electrical terminals, motor overheating and excessive discharge temperature.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: December 9, 2014
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • Heat Sink For Cooling Power Electronics
    Publication number: 20140332182
    Abstract: A heat sink device for cooling a power electronics module includes a base platform having a first surface and a second surface on opposite sides of the base platform, a plurality of upright members extending outwardly from the first surface of the base platform and defining a cavity wherein the power electronics module is disposed in conductive heat exchange relationship with the first surface of the base platform, and a plurality of heat transfer fins extending outwardly from the second surface of the base platform and defining a plurality of cooling air flow channels.
    Type: Application
    Filed: April 12, 2012
    Publication date: November 13, 2014
    Applicant: Carrier Corporation
    Inventors: Michael F. Taras, KeonWoo Lee, Mark J. Perkovich, Suresh Duraisamy, XuQiang Liao
  • Transport Refrigeration System Powered By Diesel Engine With Pressurized Combustion Air
    Publication number: 20140331706
    Abstract: A transport refrigeration system includes a diesel engine equipped with a combustion air pressurization device, such as a turbo-charger or a supercharger. The diesel engine powers at least one component associated with the transport refrigeration system, such as a refrigeration compressor or an air-moving device.
    Type: Application
    Filed: October 12, 2012
    Publication date: November 13, 2014
    Inventors: Michael F. Taras, Russell G. Lewis, Nader S. Awwad, Benjamin E. Ferguson, John T. Steele
  • Multiple Bank Flattened Tube And Folded Fin Heat Exchanger
    Publication number: 20140311720
    Abstract: A multiple bank, flattened tube heat exchange unit includes a first tube bank including a plurality of flattened tube segments extending longitudinally in spaced parallel relationship and a second tube bank including a plurality of flattened tube segments extending longitudinally in spaced parallel relationship, the second tube bank disposed behind the first tube bank at a desired spacing gap. A first plurality of folded fins is disposed between respective adjacent pairs of the heat exchange tube segments of the first tube bank and a second plurality of folded fins disposed between respective adjacent pairs of the heat exchange tube segments of the second tube bank.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 23, 2014
    Applicant: Carrier Corporation
    Inventors: Michael F. Taras, Arindom Joardar, Tobias H. Sienel, Mel Woldesemayat, Bruce J. Poplawski
  • Variable Frequency Drive Heat Sink Assembly
    Publication number: 20140298846
    Abstract: A heat sink assembly is disclosed for cooling a power electronics module, such as a variable frequency drive. The heat sink assembly includes a housing and a heat sink structure. The housing defines an interior chamber for enclosing the power electronics module and also defines a cooling air flow channel exterior to the interior chamber. The heat sink structure is disposed in conductive heat transfer relationship with the interior chamber and has a heat transfer surface positioned within the exterior cooling air flow channel in convective heat transfer relationship with the cooling air flow.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 9, 2014
    Applicant: Carrier Corporation
    Inventors: Michael F. Taras, KeonWoo Lee, Mark J. Perkovich, Suresh Duraisamy, XuQiang Liao, Claus E. Jorgensen, Arne F. Hansen
  • Flattened Tube Finned Heat Exchanger And Fabrication Method
    Publication number: 20140262181
    Abstract: A multiple tube bank heat exchanger includes a first tube bank including at least a first and a second flattened tube segments extending longitudinally in spaced parallel relationship and a second tube bank including at least a first and a second flattened tube segments extending longitudinally in spaced parallel relationship. The second tube bank is disposed behind the first tube bank with a leading edge of the second tube bank spaced from a trailing edge of the first tube bank. A continuous folded fin extends between the first and second flattened tube segments of both of said first tube bank and said second tube bank.
    Type: Application
    Filed: September 27, 2012
    Publication date: September 18, 2014
    Inventors: Michael F. Taras, Arindom Joardar, Luis F. Avila, Bruce J. Poplawski, Jack L. Esformes, Melkamu Woldesemayat
  • MICRO-PORT SHELL AND TUBE HEAT EXCHANGER
    Publication number: 20140124171
    Abstract: A heat exchanger adapted to transmit a first fluid through an interior, having a tubular body receptive of a second fluid, whereby heat transfer occurs between the fluids is provided, the tubular body extending longitudinally through the interior, having a non-circular cross-section, and being formed to define microchannels extending longitudinally along the tubular body through which the second fluid is transmitted.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 8, 2014
    Applicant: CARRIER CORPORATION
    Inventors: Michael F. Taras, Jack Leon Esformes, Satyam Bendapudi
  • HEAT TRANSFER ENHANCEMENT FOR A CONDENSING FURNACE
    Publication number: 20140102673
    Abstract: A heat exchanger is provided including a plurality of heat exchanger tubes. A first fluid flows through each heat exchanger tube and a second fluid flows around an exterior of each heat exchanger tube. A turbulator is disposed within at least one of the heat exchanger tubes. The turbulator extends at least a portion of the length of the heat exchanger tube. The turbulator includes a generally flat sheet of material having a plurality of integrally formed turbulence generating elements. The turbulence generating elements extend from a plane of the sheet of material into the first fluid flow. A disturbance is created in the first fluid flow adjacent each turbulence generating element.
    Type: Application
    Filed: August 9, 2013
    Publication date: April 17, 2014
    Applicant: Carrier Corporation
    Inventors: Arindom Joardar, Brian D. Videto, Michael L. Brown, Mathew S. Vargo, Michael F. Taras
  • AUTOMATED BRAZING SYSTEM
    Publication number: 20140084043
    Abstract: An automated brazing system by which an apparatus is conveyed along a path defined through a brazing zone is provided and includes first and second sets of burners disposed within the brazing zone at first and second opposing sides of the path, respectively, to heat the components of the apparatus substantially uniformly at the first and second sides and to heat the components of the apparatus substantially uniformly along the brazing zone, such that each side of each of the components is heated to a substantially similar temperature as each side of each of the other components.
    Type: Application
    Filed: December 20, 2011
    Publication date: March 27, 2014
    Inventors: Michael F. Taras, Zhihui Xiao, Luis Felipe Avila, Jeffrey L. Jones
  • Restriction in vapor injection line
    Patent number: 8661846
    Abstract: A refrigerant system can be operated in either vapor injection mode or unloaded mode. A restriction to the vapor injection flow is incorporated into the refrigerant system. The restriction is placed on the vapor injection line upstream of a point where the injection line meets the unloader line. In this case, the flow is restricted for the vapor injection mode of operation to a desired level. However, when the refrigerant system operates in the unloaded mode, there is no restriction to the by-pass flow, which is beneficial to the system performance in this mode of operation. In one of the embodiments, the restriction area can be adjusted to achieve the best performance during the vapor injection mode of operation in relation to the operating conditions.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: March 4, 2014
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • BRAZED PLATE HEAT EXCHANGER FOR WATER-COOLED HEAT REJECTION IN A REFRIGERATION CYCLE
    Publication number: 20130319036
    Abstract: A water-cooled heat rejection heat exchanger is provided and includes a housing having first and second opposing end plates and sidewalls extending between the end plates to form an enclosure, at least the first end plate including first and second inlet/outlet pairs for first and second fluids, respectively, a plurality of plates disposed within the enclosure between the first and second end plates to define a first fluid pathway disposed in fluid communication with the first inlet/outlet pair and a second fluid pathway disposed in fluid communication with the second inlet/outlet pair and a plurality of brazed formations disposed between adjacent ones of the first end plate, the plurality of plates and the second end plate to isolate the first fluid pathway from the second fluid pathway.
    Type: Application
    Filed: January 31, 2012
    Publication date: December 5, 2013
    Applicant: CARRIER CORPORATION
    Inventors: Michael F. Taras, Mark J. Perkovich, Mel Woldesemayat
  • TUBE STRUCTURES FOR HEAT EXCHANGER
    Publication number: 20130306288
    Abstract: A fluid-carrying tube for a heat exchanger includes an outer perimeter, an inner perimeter, and a plurality of ridges extending from the inner perimeter inwardly into an interior of the tube. Each ridge includes a ridge height, a base width and a tip width. A ratio of the ridge height to the base width is between about 0.2 and about 4.0, and a ratio of the tip width to the base width is between about 0.015 and about 0.965.
    Type: Application
    Filed: January 26, 2012
    Publication date: November 21, 2013
    Applicant: Carrier Corporation
    Inventors: Michael F. Taras, Sunil S. Mehendale, Mel Woldesemayat