Patents by Inventor Alexander Rafalovich

Alexander Rafalovich 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: 8250875
    Abstract: An appliance includes a compression stage, a condensation stage, and an evaporation stage. The evaporation stage includes a first evaporator for a first refrigerated enclosure and a second evaporator for a second refrigerated enclosure. A first valve in a condensation stage bypass line is openable to allow a supply of refrigerant to bypass the condensation stage during a defrost mode, where a condensation stage bypass line is positioned between an output of the compression stage and the second evaporator. A second valve is positioned in a line from the second evaporator to the input to the compression stage and is closeable to block a supply of refrigerant from the second evaporator to the compression stage during the defrost mode. An additional line positioned between the second evaporator and the first evaporator carries the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: August 28, 2012
    Assignee: General Electric Company
    Inventors: Alexander Rafalovich, Timothy Allen Hamel
  • Publication number: 20120047917
    Abstract: A refrigerator includes a cabinet, a sealed system, a cooling recipient, and a heat pipe. To transport cooling capacity to the cooling recipient, evaporator in the sealed system includes a cold plate section with heat transfer surface. A cold end of the heat pipe is attached to the cold plate section of the evaporator. An internal refrigerating or freezing compartment, an external compartment, an ice maker, or an ice-making cabinet could be a recipient of cooling capacity. Air flowing around a warm end of the heat pipe brings cooling potential to the internal and/or external compartments. Icemaker and/or ice-making cabinet can be located in the freezing compartment, in the freezing compartment door, in refrigerating compartment, or in refrigerating compartment door. To facilitate heat transfer the warm end of the heat pipe is in heat transfer contact with an ice making cavity that receives and freezes water to ice.
    Type: Application
    Filed: July 20, 2011
    Publication date: March 1, 2012
    Inventor: Alexander Rafalovich
  • Patent number: 7942014
    Abstract: A method for defrosting an evaporator of a refrigeration sealed system, the system including at least one refrigeration compartment and a controller operatively coupled to a compressor, an evaporator, an evaporator fan and a condenser fan, wherein the method includes initiating a defrost cycle, operating the sealed system to prechill the refrigeration compartment, and selectively operating the evaporator fan and the condenser fan to raise a temperature of the evaporator.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: May 17, 2011
    Assignee: General Electric Company
    Inventors: Alexander Rafalovich, Ziqiang Hu, Anil Kumar Tummala, Richard DeVos
  • Patent number: 7942012
    Abstract: A dual evaporator refrigerator includes a freezer compartment and a refrigeration compartment with an enclosed pan. A freezer evaporator with a freezer fan is in the freezer compartment for cooling the freezer compartment and a refrigeration evaporator with a first refrigeration fan is in the refrigeration compartment for cooling the refrigeration compartment. A compressor provides refrigerant flow to the freezer and the refrigeration evaporators. A second refrigeration fan moves air from the refrigeration evaporator to the enclosed pan.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: May 17, 2011
    Assignee: General Electric Company
    Inventors: Sheena L. Ritchie, Mark Wilson, Alexander Rafalovich
  • Publication number: 20110011109
    Abstract: An appliance includes a compression stage, a condensation stage, and an evaporation stage. The evaporation stage includes a first evaporator for a first refrigerated enclosure and a second evaporator for a second refrigerated enclosure. A first valve in a condensation stage bypass line is openable to allow a supply of refrigerant to bypass the condensation stage during a defrost mode, where a condensation stage bypass line is positioned between an output of the compression stage and the second evaporator. A second valve is positioned in a line from the second evaporator to the input to the compression stage and is closeable to block a supply of refrigerant from the second evaporator to the compression stage during the defrost mode. An additional line positioned between the second evaporator and the first evaporator carries the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 20, 2011
    Inventors: Alexander Rafalovich, Timothy Allen Hamel
  • Publication number: 20100011801
    Abstract: A dual evaporator refrigerator includes a freezer compartment and a refrigeration compartment with an enclosed pan. A freezer evaporator with a freezer fan is in the freezer compartment for cooling the freezer compartment and a refrigeration evaporator with a first refrigeration fan is in the refrigeration compartment for cooling the refrigeration compartment. A compressor provides refrigerant flow to the freezer and the refrigeration evaporators. A second refrigeration fan moves air from the refrigeration evaporator to the enclosed pan.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 21, 2010
    Inventors: Sheena L. Ritchie, Mark Wilson, Alexander Rafalovich
  • Publication number: 20070227166
    Abstract: A method of switching refrigerant flow between a path to a freezer evaporator in a freezer compartment and a path to a fresh food evaporator in a fresh food compartment of a refrigerator includes providing a three-way valve with at least three operational positions in flow communication with the path to the fresh food evaporator and the path to the freezer evaporator. A temperature difference (dtZ) between a freezer compartment temperature and a freezer evaporator evaporating temperature is measured. A temperature difference (dtF) between a fresh food compartment temperature and a fresh food evaporator evaporating temperature is measured. The operation of the three way valve is controlled based on at least one of dtZ and dtF.
    Type: Application
    Filed: May 29, 2007
    Publication date: October 4, 2007
    Inventors: Alexander Rafalovich, Ziqiang Hu
  • Publication number: 20070181000
    Abstract: An air quality device includes a housing defining an airflow path, a humidity control module in flow communication with the airflow path, and an air contaminant removal module. The air contaminant removal module comprises at least one of a particle removal module arranged within the housing, an odor removal module arranged within the housing, and an anti-microbial module arranged within the housing.
    Type: Application
    Filed: February 3, 2006
    Publication date: August 9, 2007
    Inventors: Mark Wilson, Mahendra Patil, John Hooker, Arti Shah, Carl Whitaker, Sathi Bandaru, Alexander Rafalovich, Gautam Subbarao, Yefim Tsozik
  • Publication number: 20070119193
    Abstract: A refrigerator includes a housing having at least one refrigerator compartment, a door for accessing the at least one refrigerator compartment, and an ice-dispensing assembly. The ice-dispensing assembly includes an insulated housing arranged within the at least one refrigerator compartment, an ice-making device arranged within the insulated housing and configured to produce ice, an ice-storage container arranged within the insulated housing, and a dispenser arranged within the door and communicating with the ice-storage container, wherein the dispenser is configured to transfer ice from the ice-storage container to an external portion of the refrigerator.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Inventors: Matthew Davis, Alexander Rafalovich, Mark Wilson, Gautam Subbarao, Anil Tummala, Thiruvalan Venkatesan, Anand Joshi, Hemachandran Umakanthan, Sanjay Anikihindi
  • Publication number: 20070095089
    Abstract: A refrigerator includes an evaporator assembly. The evaporator assembly includes an evaporator fan located in a refrigeration compartment of the refrigerator. The refrigerator evaporator assembly includes a fan cover at least partially enclosing the evaporator fan, the fan cover including a first side, a second side, a front, a back, and an air inlet. The refrigerator evaporator assembly also includes a light arranged in proximity to the air inlet such that air entering the evaporator fan is warmed by the light.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Inventors: Alexander Rafalovich, Sathi Bandaru, Yefim Tsozik
  • Publication number: 20050183429
    Abstract: A refrigerator includes a refrigeration compartment having an upper region and a lower region, a first evaporator positioned in the upper region, a second evaporator, positioned in the lower region, and a fan disposed between the first and second evaporators. The fan is configured, such that air flows past first and second evaporators and is discharged into said upper and lower regions when said fan is energized.
    Type: Application
    Filed: October 11, 2004
    Publication date: August 25, 2005
    Inventors: Alexander Rafalovich, Anil Tummala, Ziquang Hu, John Steimel
  • Publication number: 20050132733
    Abstract: A method of switching refrigerant flow between a path to a fresh food evaporator in a fresh food compartment and a path to a freezer evaporator in a freezer compartment of a refrigerator, wherein the fresh food evaporator is coupled to a first fan and the freezer evaporator is coupled to a second fan, and wherein the method includes providing a three way valve with at least three operational positions in flow communication with the fresh food path and the freezer path, switching the three way valve between the operational positions, activating the first fan, deactivating the second fan, and delivering the refrigerant.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 23, 2005
    Inventors: Alexander Rafalovich, Ziqiang Hu
  • Publication number: 20050086955
    Abstract: An apparatus and method for defrosting an evaporator of a refrigeration sealed system is described. The system includes a controller operatively coupled to an evaporator fan, a condenser fan and a defrost heater, and the method includes operating the sealed system until a selected time till defrost interval expires, initiating a defrost cycle when the time till defrost interval expires, and selectively operating the sealed system to raise a temperature of the evaporator while the defrost heater is inactivated.
    Type: Application
    Filed: November 12, 2004
    Publication date: April 28, 2005
    Inventors: Alexander Rafalovich, Ziqiang Hu, Anil Tummala, Richard DeVos
  • Patent number: 6817195
    Abstract: An apparatus and method for defrosting an evaporator of a refrigeration sealed system is described. The system includes a controller operatively coupled to an evaporator fan, a condenser fan and a defrost heater, and the method includes operating the sealed system until a selected time till defrost interval expires, initiating a defrost cycle when the time till defrost interval expires, and selectively operating the sealed system to raise a temperature of the evaporator while the defrost heater is inactivated.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: November 16, 2004
    Assignee: General Electric Company
    Inventors: Alexander Rafalovich, Ziqiang Hu, Anil Kumar Tummala, Richard DeVos
  • Publication number: 20030182953
    Abstract: A method for controlling a cooling system configured to cool a compartment is provided. The method includes receiving a temperature of the compartment from a temperature sensor, adjusting the received temperature to obtain a corrected temperature, and controlling the cooling system based on the corrected temperature.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventors: Ziqiang Hu, Alexander Rafalovich
  • Publication number: 20030182951
    Abstract: An apparatus and method for defrosting an evaporator of a refrigeration sealed system is described. The system includes a controller operatively coupled to an evaporator fan, a condenser fan and a defrost heater, and the method includes operating the sealed system until a selected time till defrost interval expires, initiating a defrost cycle when the time till defrost interval expires, and selectively operating the sealed system to raise a temperature of the evaporator while the defrost heater is inactivated.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventors: Alexander Rafalovich, Ziqiang Hu, Anil Kumar Tummala, Richard DeVos
  • Patent number: 6625999
    Abstract: A method for controlling a cooling system configured to cool a compartment is provided.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: September 30, 2003
    Assignee: General Electric Company
    Inventors: Ziqiang Hu, Alexander Rafalovich
  • Patent number: 6519970
    Abstract: A refrigeration unit assembly includes: a compressor, and a condenser oriented in a wrap-around relationship with said compressor.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: February 18, 2003
    Assignee: General Electric Company
    Inventors: Alexander Rafalovich, Yurly Zelechenok, Ramesh Noon