Patents by Inventor Qingjun Cai

Qingjun Cai 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: 11769919
    Abstract: A system for thermal management and structural containment includes an enclosure, a heat source disposed within the enclosure; and a wick encompassing at least a portion of an outer surface of the heat source.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: September 26, 2023
    Assignee: TELEDYNE SCIENTIFIC & IMAGING, LLC
    Inventors: Avijit Bhunia, Olivier Sudre, Qingjun Cai
  • Patent number: 10006720
    Abstract: A cooling system that includes a substrate having a metallic face, at least one microporous wick formation in thermal communication with the metallic face, and a liquid delivery head positioned in complementary opposition to the metallic face, the liquid delivery head having at least one nozzle for directing a liquid towards the metallic face.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: June 26, 2018
    Assignee: TELEDYNE SCIENTIFIC & IMAGING, LLC
    Inventors: Avijit Bhunia, Qingjun Cai, Chung-Lung Chen
  • Publication number: 20150280295
    Abstract: A system for thermal management and structural containment includes an enclosure, a heat source disposed within the enclosure; and a wick encompassing at least a portion of an outer surface of the heat source.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 1, 2015
    Inventors: Avijit Bhunia, Olivier Sundre, Qingjun Cai
  • Patent number: 8720530
    Abstract: In one aspect of the present invention, a multi-layer wick for a loop heat pipe is provided. The multi-layer wick includes a primary wick, the primary wick comprising: a first layer; and a second layer, wherein the first layer surrounds the second layer; and a secondary wick, wherein the second layer of the primary wick surrounds the secondary wick. In another aspect of the present invention, a method of fabricating a multi-layer wick is provided. The method includes machining the outer diameter of an inner layer larger than the inner diameter of an outer layer; heating the outer layer to enlarge the inner diameter; inserting the inner layer into the outer layer; and cooling the inner layer and the outer layer.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: May 13, 2014
    Assignee: The Boeing Company
    Inventors: Julie Fatemeh Asfia, Qingjun Cai, Chung-Lung Chen
  • Publication number: 20130270220
    Abstract: A system and method is disclosed for fabricating a heat spreader system, including providing a plurality of bottom microporous wicks recessed in a bottom substrate, bonding a center substrate to the bottom substrate, and bonding a top substrate having a top chamber portion to the center substrate to establish a first vapor chamber with said plurality of bottom microporous wicks.
    Type: Application
    Filed: June 7, 2013
    Publication date: October 17, 2013
    Inventors: Qingjun Cai, Chung-Lung Chen, Chialun Tsai
  • Patent number: 8482921
    Abstract: A system and method is disclosed for fabricating a heat spreader system, including providing a plurality of bottom microporous wicks recessed in a bottom substrate, bonding a center substrate to the bottom substrate, and bonding a top substrate having a top chamber portion to the center substrate to establish a first vapor chamber with said plurality of bottom microporous wicks.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: July 9, 2013
    Assignee: Teledyne Scientific & Imaging, LLC.
    Inventors: Qingjun Cai, Chung-Lung Chen, Chialun Tsai
  • Publication number: 20130032311
    Abstract: A cooling system is disclosed that includes a substrate having a metallic face, at least one microporous wick formation in thermal communication with the metallic face, and a liquid delivery head positioned in complementary opposition to the metallic face, the liquid delivery head having at least one nozzle for directing a liquid towards the metallic face.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Inventors: Avijit Bhunia, Qingjun Cai, Chung-Lung Chen
  • Publication number: 20110284188
    Abstract: A system and method is disclosed for fabricating a heat spreader system, including providing a plurality of bottom microporous wicks recessed in a bottom substrate, bonding a center substrate to the bottom substrate, and bonding a top substrate having a top chamber portion to the center substrate to establish a first vapor chamber with said plurality of bottom microporous wicks.
    Type: Application
    Filed: November 15, 2010
    Publication date: November 24, 2011
    Inventors: Qingjun Cai, Chung-Lung Chen, Chialun Tsai
  • Publication number: 20080225489
    Abstract: A heat spreader for transferring heat from a heat source to a heat sink using a phase change coolant, includes an array of cells, each cell having at least one microporous wick for supporting flows of the coolant in the liquid phase, via capillary action, within the spreader from proximate the heat sink to proximate the source and at least one macroporous wick for supporting flows of the coolant, in the liquid and vapor phase, within the spreader from proximate the source to proximate the heat sink.
    Type: Application
    Filed: October 23, 2007
    Publication date: September 18, 2008
    Inventors: Qingjun Cai, Chung-Lung Chen, Bing-Chung Chen
  • Publication number: 20080087406
    Abstract: A cooling assembly, system, and method are provided. The cooling assembly includes a plate comprising a plurality of channels defined in a surface of the plate and at least one pulsating heat pipe comprising tubing. At least a portion of the tubing is positioned within the channels, and the tubing is configured for carrying coolant therein.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: Julie F. Asfia, Marianne E. Mata, Chung-Lung Chen, Qingjun Cai, Bruce L. Drolen
  • Patent number: 7345877
    Abstract: A cooling apparatus, system, and method are provided. The cooling apparatus includes at least one printed circuit board having opposed major surfaces, and at least one electrical component or other heat source positioned on one major surface of the printed circuit board. The cooling apparatus also includes a pulsating heat pipe having at least a portion that is positioned to either extend along and proximate to one of the major surfaces or be embedded within the printed circuit board. As such, the pulsating heat pipe is capable of transferring heat from the printed circuit board.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: March 18, 2008
    Assignee: The Boeing Company
    Inventors: Julie F. Asfia, Chung-Lung Chen, Qingjun Cai
  • Publication number: 20070267180
    Abstract: In one aspect of the present invention, a multi-layer wick for a loop heat pipe is provided. The multi-layer wick includes a primary wick, the primary wick comprising: a first layer; and a second layer, wherein the first layer surrounds the second layer; and a secondary wick, wherein the second layer of the primary wick surrounds the secondary wick. In another aspect of the present invention, a method of fabricating a multi-layer wick is provided. The method includes machining the outer diameter of an inner layer larger than the inner diameter of an outer layer; heating the outer layer to enlarge the inner diameter; inserting the inner layer into the outer layer; and cooling the inner layer and the outer layer.
    Type: Application
    Filed: May 17, 2006
    Publication date: November 22, 2007
    Inventors: Julie Fatemeh Asfia, Qingjun Cai, Chung-Lung Chen
  • Publication number: 20070047388
    Abstract: A fluidic micromixer comprises a plurality of fluid inlets in communication with a mixing chamber, the plurality of fluid inlets being adapted to introduce into the chamber a corresponding plurality of distinct fluid streams. The mixing chamber comprises at least one surface patterned to define hydrophobic and hydrophilic regions spaced apart along a principal direction of fluid flow within the chamber from the fluid inlets to a fluid outlet, the regions being adapted to induce fluid flow in a direction transverse to the principal direction of fluid flow to mix the fluid streams. At least one of the hydrophobic regions may comprise microstructures patterned on the at least one surface. Also disclosed are a method for fabricating the micromixer, a method of mixing a plurality of fluid streams by vortex mixing or instability mixing, and a system comprising the micromixer, fluid reservoirs and a pump for generating flow of fluids from the reservoirs to the micromixer.
    Type: Application
    Filed: September 26, 2005
    Publication date: March 1, 2007
    Inventors: Jeffrey DeNatale, Chung-Lung Chen, Qingjun Cai, Chialun Tsai
  • Publication number: 20060146496
    Abstract: A cooling apparatus, system, and method are provided. The cooling apparatus includes at least one printed circuit board having opposed major surfaces, and at least one electrical component or other heat source positioned on one major surface of the printed circuit board. The cooling apparatus also includes a pulsating heat pipe having at least a portion that is positioned to either extend along and proximate to one of the major surfaces or be embedded within the printed circuit board. As such, the pulsating heat pipe is capable of transferring heat from the printed circuit board.
    Type: Application
    Filed: January 6, 2005
    Publication date: July 6, 2006
    Inventors: Julie Asfia, Chung-Lung Chen, Qingjun Cai