Patents by Inventor Shyy-Woei Chang

Shyy-Woei Chang 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: 9441888
    Abstract: A loop type pressure-gradient-driven low-pressure thermosiphon device includes a case sealed by a cover to define a chamber with a vaporizing section. The vaporizing section includes a plurality of spaced flow-guiding members and first flow passages formed between adjacent flow-guiding members. The flow passages respectively have at least one free end communicating with a free zone in the chamber. A pipeline is connected at two ends to two opposite sides of the case, and has a second flow passage communicable with the vaporizing section. The pipeline extends through at least one heat-dissipating element, so that the pipeline and the heat-dissipating element together define a condensing section. In the thermosiphon device, a low-pressure end is created through proper pressure-reduction design to form a pressure gradient for driving steam-water circulation, and the working fluid can be driven to circulate and transfer heat in the pipeline and the case without any wick structure.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: September 13, 2016
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 9353996
    Abstract: A pressure difference driven heat spreader includes a chamber defined in a main body; a vaporizing section arranged in the chamber and including a plurality of first flow-guiding members spaced from one another to define first flow passages therebetween, the first flow passages each having at least one free end communicating with a free zone; a condensing section arranged in the chamber opposite to the vaporizing section and including a plurality of second flow-guiding members spaced from one another to define second flow passages therebetween; and an interconnecting section arranged between the vaporizing and condensing sections and having first and second communicating holes for communicating the vaporizing section with the condensing section. The condensing section functions as a low-pressure end, so that a pressure gradient is produced in the pressure difference driven heat spreader to drive steam-water circulation therein, and no wick structure is needed for driving the working fluid.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: May 31, 2016
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 9074823
    Abstract: A thermal siphon structure includes a main body, a chamber disposed therein, an evaporation section, a condensation section and a connection section positioned between the evaporation section and condensation section. The evaporation section and condensation section are respectively arranged in the chamber on two sides thereof. The connection section has a set of first communication holes and a set of second communication holes in communication with the evaporation section and condensation section. The evaporation section and condensation section respectively have multiple first and second flow guide bodies, which are arranged at intervals to define therebetween first and second flow ways. Each of the first and second flow ways has a narrower end and a wider end. The first flow ways communicate with a free area. The condensation section is designed with a low-pressure end to create a pressure gradient for driving a working fluid to circulate without any capillary structure.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: July 7, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 9071100
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: June 30, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 9071098
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: June 30, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 9065313
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: June 23, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 8973646
    Abstract: A slim type pressure-gradient-driven low-pressure thermosiphon plate includes a main body closed by a cover. The main body includes a central heat receiving zone, a pressure accumulating zone and a first flow passage unit separately located at two opposite sides of the heat receiving zone, a free zone communicating with the pressure accumulating zone, a first and a second condensing zone communicating with the free zone, a third and a fourth condensing zone communicating with the first flow passage unit, a second flow passage unit located between and communicating with the first and the third condensing zone, and a third flow passage unit located between and communicating with the second and the fourth condensing zone. In the thermosiphon plate, a low-pressure end is created through proper pressure-reduction design to form a pressure gradient for driving steam-water circulation, and the working fluid can transfer heat without any wick structure.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: March 10, 2015
    Assignee: Asisa Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang, Yun-Jun Gu
  • Publication number: 20140265669
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Application
    Filed: April 23, 2014
    Publication date: September 18, 2014
    Applicant: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20140232221
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicant: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Patent number: 8479805
    Abstract: A heat-dissipating assembly includes a body and a bottom plate. The body has a heat-absorbing portion. The interior of the heat-absorbing portion is provided with a chamber covered by the bottom plate. The chamber has an evaporating region for generating a high pressure, and a condensing region for generating a low pressure. The pressure gradient between the evaporating region and the condensing region is used to drive the circulation of liquid/vapor phase of a working fluid. With this structure, heat can be conducted rapidly without providing any wick structure.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: July 9, 2013
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20120267083
    Abstract: An inclined waved board and a heat exchanger thereof. The inclined waved board includes a board body composed of continuous waved sections. The waved sections are respectively inclined from a first side to a second side, and a third side and from a fourth side to the second side of the board body. The waved sections define multiple raised sections and recessed sections on two faces of the board body. The heat exchanger is composed of multiple board bodies arranged adjacent to and in parallel to each other. Each two adjacent board bodies define therebetween a flow way. The inclined waved sections enhance turbulence intensity and guide the fluids to produce secondary flows along the cross-sections of the flow ways to form dynamic three-dimensional swirling flow structures which combine to augment heat transfer rates with reduced pressure-drop.
    Type: Application
    Filed: June 20, 2012
    Publication date: October 25, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy Woei Chang, Kuei Feng Chaing
  • Publication number: 20120248907
    Abstract: A centrifugal heat dissipation device and a motor using same are disclosed. The centrifugal heat dissipation device includes a main body having a shaft hole, a heat-absorption zone and a heat-transfer zone. The heat-transfer zone has a radially outer side connected to the heat-absorption zone and a radially inner side connected to the shaft hole. The shaft hole axially extends through the main body for receiving a shaft of a motor therein. A centrifugal force generated by the rotating shaft and accordingly, the heat dissipation device enables enhanced vapor-liquid circulation of a working fluid in the heat dissipation device, so that heat generated by the operating motor is absorbed by the centrifugal heat dissipation device and transferred to the shaft for guiding out of the motor, allowing the motor to have largely upgraded heat dissipation performance.
    Type: Application
    Filed: July 11, 2011
    Publication date: October 4, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20120061063
    Abstract: A heat exchanger includes a body. Both sides of the body are provided with a first flowing path set and a second flowing path set. The first flowing path set and the second flowing path set are provided with a plurality of flow-disturbing portions on both sides of the body respectively. The body is provided with an inlet and an outlet in communication with the first flowing path set and the second flowing path set. A working fluid circulates in the first flowing path set and the second flowing path set. The flow-disturbing portions make the working fluid to generate separated eddies to increase the strength of turbulent flow and to improve the heat-conducting efficiency of the heat exchanger greatly.
    Type: Application
    Filed: November 1, 2010
    Publication date: March 15, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Numen Luo, Li-Dong Zhang, Wess Juan, Shyy-Woei Chang
  • Publication number: 20120024499
    Abstract: A loop type pressure-gradient-driven low-pressure thermosiphon device includes a case sealed by a cover to define a chamber with a vaporizing section. The vaporizing section includes a plurality of spaced flow-guiding members and first flow passages formed between adjacent flow-guiding members. The flow passages respectively have at least one free end communicating with a free zone in the chamber. A pipeline is connected at two ends to two opposite sides of the case, and has a second flow passage communicable with the vaporizing section. The pipeline extends through at least one heat-dissipating element, so that the pipeline and the heat-dissipating element together define a condensing section. In the thermosiphon device, a low-pressure end is created through proper pressure-reduction design to form a pressure gradient for driving steam-water circulation, and the working fluid can be driven to circulate and transfer heat in the pipeline and the case without any wick structure.
    Type: Application
    Filed: December 15, 2010
    Publication date: February 2, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20120018137
    Abstract: A heat-dissipating assembly includes a body and a bottom plate. The body has a heat-absorbing portion. The interior of the heat-absorbing portion is provided with a chamber covered by the bottom plate. The chamber has an evaporating region for generating a high pressure, and a condensing region for generating a low pressure. The pressure gradient between the evaporating region and the condensing region is used to drive the circulation of liquid/vapor phase of a working fluid. With this structure, heat can be conducted rapidly without providing any wick structure.
    Type: Application
    Filed: August 31, 2010
    Publication date: January 26, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei CHANG, Kuei-Feng CHIANG
  • Publication number: 20120018128
    Abstract: A slim type pressure-gradient-driven low-pressure thermosiphon plate includes a main body closed by a cover. The main body includes a central heat receiving zone, a pressure accumulating zone and a first flow passage unit separately located at two opposite sides of the heat receiving zone, a free zone communicating with the pressure accumulating zone, a first and a second condensing zone communicating with the free zone, a third and a fourth condensing zone communicating with the first flow passage unit, a second flow passage unit located between and communicating with the first and the third condensing zone, and a third flow passage unit located between and communicating with the second and the fourth condensing zone. In the thermosiphon plate, a low-pressure end is created through proper pressure-reduction design to form a pressure gradient for driving steam-water circulation, and the working fluid can transfer heat without any wick structure.
    Type: Application
    Filed: August 30, 2010
    Publication date: January 26, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang, Yun-Jun Gu
  • Publication number: 20120018130
    Abstract: A thermal siphon structure includes a main body, a chamber disposed therein, an evaporation section, a condensation section and a connection section positioned between the evaporation section and condensation section. The evaporation section and condensation section are respectively arranged in the chamber on two sides thereof. The connection section has a set of first communication holes and a set of second communication holes in communication with the evaporation section and condensation section. The evaporation section and condensation section respectively have multiple first and second flow guide bodies, which are arranged at intervals to define therebetween first and second flow ways. Each of the first and second flow ways has a narrower end and a wider end. The first flow ways communicate with a free area. The condensation section is designed with a low-pressure end to create a pressure gradient for driving a working fluid to circulate without any capillary structure.
    Type: Application
    Filed: August 16, 2010
    Publication date: January 26, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20120018131
    Abstract: A pressure difference driven heat spreader includes a chamber defined in a main body; a vaporizing section arranged in the chamber and including a plurality of first flow-guiding members spaced from one another to define first flow passages therebetween, the first flow passages each having at least one free end communicating with a free zone; a condensing section arranged in the chamber opposite to the vaporizing section and including a plurality of second flow-guiding members spaced from one another to define second flow passages therebetween; and an interconnecting section arranged between the vaporizing and condensing sections and having first and second communicating holes for communicating the vaporizing section with the condensing section. The condensing section functions as a low-pressure end, so that a pressure gradient is produced in the pressure difference driven heat spreader to drive steam-water circulation therein, and no wick structure is needed for driving the working fluid.
    Type: Application
    Filed: August 30, 2010
    Publication date: January 26, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
  • Publication number: 20110174470
    Abstract: A spiral heat exchanger includes two assembled covers defining a chamber therebetween for receiving a spiral unit therein. The spiral unit includes a first and a second spiral member separately spirally extending from a central outlet to a peripheral outlet on the two covers to respectively form a first and a second flow passage. A driving unit is assembled to and drives the assembled covers to rotate at the same time, so that cold and hot airflows respectively enter and flow through the first and second spiral members from the central outlet to the peripheral outlet under a centrifugal force to exchange heat at the spiral unit. The spiral unit provides extended flow passages and increased heat exchange area, giving the spiral heat exchanger increased heat transfer capacity and heat exchange efficiency and allowing omission of fans and radiating fin assembly to eliminate operating noise and accumulated dust.
    Type: Application
    Filed: June 28, 2010
    Publication date: July 21, 2011
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei CHANG, Kuei-Feng CHIANG
  • Publication number: 20110168360
    Abstract: A heat exchanger includes a body having a center and a spiral guiding trough extending spirally and outwardly from the center toward an outside of the center. The radius of the spiral guiding trough increases gradually from the center toward the outside of the center. A first port and a second port are in communication with the spiral guiding trough respectively. With the combination of the spiral guiding trough and the body, the fluid can be sufficiently mixed in the spiral guiding trough, thereby achieving an excellent thermal-conducting effect.
    Type: Application
    Filed: February 22, 2010
    Publication date: July 14, 2011
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shyy-Woei Chang, Kuei-Feng Chiang, Yu-Min Lin