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).
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Patent number: 11695310Abstract: A motor, a cooling device, and a cooling method are disclosed. The cooling device is mounted on a stator of the motor. The cooling device includes a sleeve and a spiral duct. A wall of the sleeve has a spiral groove extending along the sleeve. The sleeve is sleeved onto the stator. The spiral duct is mounted in the spiral groove. The spiral duct has a first spiral form corresponding to the spiral groove, so that the spiral duct is correspondingly installed in the spiral groove. The spiral duct has a second spiral form extending along the spiral duct. A twisted spiral cooling channel is formed along the spiral pathway. A cooling fluid flowing through the twisted spiral cooling channel is subjected to the continuously changing cross-section of the twisted spiral cooling channel to enhance the swirl intensity, thereby improving the convection heat transfer effectiveness.Type: GrantFiled: November 30, 2020Date of Patent: July 4, 2023Assignee: National Cheng Kung UniversityInventors: Mi-Ching Tsai, Shyy-Woei Chang, Min-Fu Hsieh, Kai-Jung Shih, Wei-Ling Cai, Jen-Hsiang Liu
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Patent number: 11581778Abstract: A motor and a rotating shaft cooling device thereof are disclosed. A rotating shaft of the motor is formed with an annular space. A shaft has a front end and a rear end. The shaft is a blind tube formed with a channel communicating with the annular space through a plurality of nozzles. The distance between the nozzles and the rear end is less than one-half of the length of the shaft. A cooling fluid flows through the nozzles to form a jet array to impinge on the inner wall of the rotating shaft to cool the rotating shaft, and flows back in the annular space to enhance the cooling effect, increase the heat exchange area, and improve the cooling effectiveness of the rotating shaft.Type: GrantFiled: January 12, 2021Date of Patent: February 14, 2023Assignee: National Cheng Kung UniversityInventors: Mi-Ching Tsai, Shyy-Woei Chang, Min-Fu Hsieh, Kai-Jung Shih, Wei-Ling Cai, Bi-Sheng Wei
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Publication number: 20220224188Abstract: A motor and a rotating shaft cooling device thereof are disclosed. A rotating shaft of the motor is formed with an annular space. A shaft has a front end and a rear end. The shaft is a blind tube formed with a channel communicating with the annular space through a plurality of nozzles. The distance between the nozzles and the rear end is less than one-half of the length of the shaft. A cooling fluid flows through the nozzles to form a jet array to impinge on the inner wall of the rotating shaft to cool the rotating shaft, and flows back in the annular space to enhance the cooling effect, increase the heat exchange area, and improve the cooling effectiveness of the rotating shaft.Type: ApplicationFiled: January 12, 2021Publication date: July 14, 2022Inventors: MI-CHING TSAI, SHYY-WOEI CHANG, MIN-FU HSIEH, KAI-JUNG SHIH, WEI-LING CAI, BI-SHENG WEI
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Publication number: 20210328477Abstract: A motor, a cooling device, and a cooling method are disclosed. The cooling device is mounted on a stator of the motor. The cooling device includes a sleeve and a spiral duct. A wall of the sleeve has a spiral groove extending along the sleeve. The sleeve is sleeved onto the stator. The spiral duct is mounted in the spiral groove. The spiral duct has a first spiral form corresponding to the spiral groove, so that the spiral duct is correspondingly installed in the spiral groove. The spiral duct has a second spiral form extending along the spiral duct. A twisted spiral cooling channel is formed along the spiral pathway. A cooling fluid flowing through the twisted spiral cooling channel is subjected to the continuously changing cross-section of the twisted spiral cooling channel to enhance the swirl intensity, thereby improving the convection heat transfer effectiveness.Type: ApplicationFiled: November 30, 2020Publication date: October 21, 2021Inventors: MI-CHING TSAI, SHYY-WOEI CHANG, MIN-FU HSIEH, KAI-JUNG SHIH, WEI-LING CAI, JEN-HSIANG LIU
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Patent number: 9441888Abstract: 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: GrantFiled: December 15, 2010Date of Patent: September 13, 2016Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 9353996Abstract: 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: GrantFiled: August 30, 2010Date of Patent: May 31, 2016Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 9074823Abstract: 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: GrantFiled: August 16, 2010Date of Patent: July 7, 2015Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 9071098Abstract: 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: GrantFiled: July 11, 2011Date of Patent: June 30, 2015Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 9071100Abstract: 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: GrantFiled: April 23, 2014Date of Patent: June 30, 2015Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 9065313Abstract: 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: GrantFiled: April 23, 2014Date of Patent: June 23, 2015Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 8973646Abstract: 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: GrantFiled: August 30, 2010Date of Patent: March 10, 2015Assignee: Asisa Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang, Yun-Jun Gu
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Publication number: 20140265669Abstract: 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: ApplicationFiled: April 23, 2014Publication date: September 18, 2014Applicant: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Publication number: 20140232221Abstract: 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: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Patent number: 8479805Abstract: 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: GrantFiled: August 31, 2010Date of Patent: July 9, 2013Assignee: Asia Vital Components Co., Ltd.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Publication number: 20120267083Abstract: 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: ApplicationFiled: June 20, 2012Publication date: October 25, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Shyy Woei Chang, Kuei Feng Chaing
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Publication number: 20120248907Abstract: 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: ApplicationFiled: July 11, 2011Publication date: October 4, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Publication number: 20120061063Abstract: 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: ApplicationFiled: November 1, 2010Publication date: March 15, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Numen Luo, Li-Dong Zhang, Wess Juan, Shyy-Woei Chang
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Publication number: 20120024499Abstract: 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: ApplicationFiled: December 15, 2010Publication date: February 2, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang
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Publication number: 20120018137Abstract: 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: ApplicationFiled: August 31, 2010Publication date: January 26, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Shyy-Woei CHANG, Kuei-Feng CHIANG
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Publication number: 20120018128Abstract: 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: ApplicationFiled: August 30, 2010Publication date: January 26, 2012Applicant: ASIA VITAL COMPONENTS CO., LTD.Inventors: Shyy-Woei Chang, Kuei-Feng Chiang, Yun-Jun Gu