Patents by Inventor Zhiwei Shan
Zhiwei Shan 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: 11407274Abstract: A refrigeration circuit for a vehicle system includes a compressor, an evaporator, an accumulator, an inlet tube, an outlet tube, and a bypass valve. The inlet tube is configured to deliver refrigerant from the evaporator to the accumulator. The outlet tube is configured to deliver refrigerant from the accumulator to the compressor. The bypass valve is in fluid communication with the inlet and outlet tubes. The bypass valve has an open position and a closed position. The bypass valve is configured to direct refrigerant flow from the inlet tube to the outlet tube to bypass the accumulator when in the open position. The bypass valve is configured to restrict refrigerant from flowing from the inlet tube to the outlet tube when in the closed position.Type: GrantFiled: March 12, 2020Date of Patent: August 9, 2022Assignees: DENSO INTERNATIONAL AMERICA, INC, DENSO CORPORATIONInventor: Zhiwei Shan
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Patent number: 11142035Abstract: A heating, ventilation, and air conditioning (HVAC) system for a vehicle may include a housing, a first heat exchanger, a first door, and a second heat exchanger. The housing may include a first inlet branch, a second inlet branch, and an outlet branch. The first door may be adjacent the first heat exchanger and may move from a first position preventing flow to the first heat exchanger to a second position permitting flow to the first heat exchanger. The second heat exchanger may be positioned downstream of the first heat exchanger.Type: GrantFiled: February 25, 2019Date of Patent: October 12, 2021Assignee: DENSO International America, Inc.Inventor: Zhiwei Shan
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Publication number: 20210283976Abstract: A refrigeration circuit for a vehicle system includes a compressor, an evaporator, an accumulator, an inlet tube, an outlet tube, and a bypass valve. The inlet tube is configured to deliver refrigerant from the evaporator to the accumulator. The outlet tube is configured to deliver refrigerant from the accumulator to the compressor. The bypass valve is in fluid communication with the inlet and outlet tubes. The bypass valve has an open position and a closed position. The bypass valve is configured to direct refrigerant flow from the inlet tube to the outlet tube to bypass the accumulator when in the open position. The bypass valve is configured to restrict refrigerant from flowing from the inlet tube to the outlet tube when in the closed position.Type: ApplicationFiled: March 12, 2020Publication date: September 16, 2021Inventor: Zhiwei SHAN
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Patent number: 10976238Abstract: A measurement apparatus for micro- and nano-scale materials and a measurement method thereof are provided. The measurement apparatus for the micro- and nano-scale material includes a transmission electron microscope to generate a magnetic field, and a conductive flat punch and a sample which are arranged in the magnetic field. The sample includes the micro- and nano-scale materials. When the current passes through the sample and the conductive flat punch, the conductive flat punch deflects laterally relative to the sample with controllable displacement driven by the electromagnetic force. The required lateral displacement of the present invention is controllable, so that the utilization rate of equipment is greatly increased, and the cost is reduced. In addition, the whole test is performed in the transmission electron microscope, so that a measurement process can be observed in real time.Type: GrantFiled: January 30, 2019Date of Patent: April 13, 2021Assignee: Xi'an Jiaotong UniversityInventors: Zhiwei Shan, Huanhuan Lu, Ju Li
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Patent number: 10907868Abstract: A heating system including a condenser and an evaporator. A compressor is along a refrigerant line and is configured to compress refrigerant flowing to the condenser. A first valve is along the refrigerant line between the compressor and the condenser. A controller is configured to partially close the first valve when a measured temperature is below a threshold to increase discharge pressure of refrigerant compressed by the compressor and increase heat dissipation of the condenser.Type: GrantFiled: January 25, 2019Date of Patent: February 2, 2021Assignee: DENSO International America, Inc.Inventor: Zhiwei Shan
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Publication number: 20200269650Abstract: A heating, ventilation, and air conditioning (HVAC) system for a vehicle may include a housing, a first heat exchanger, a first door, and a second heat exchanger. The housing may include a first inlet branch, a second inlet branch, and an outlet branch. The first door may be adjacent the first heat exchanger and may move from a first position preventing flow to the first heat exchanger to a second position permitting flow to the first heat exchanger. The second heat exchanger may be positioned downstream of the first heat exchanger.Type: ApplicationFiled: February 25, 2019Publication date: August 27, 2020Inventor: Zhiwei SHAN
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Patent number: 10752087Abstract: A refrigeration system for a vehicle is provided and includes inside and outside condenser circuits. The inside condenser circuit includes a first valve receiving a first portion of refrigerant out of a compressor, and a cabin condenser receiving and condensing the first portion from the first valve while heating an interior of a cabin. The outside condenser circuit includes: a second valve receiving a second portion of the refrigerant out of the compressor; an outside condenser receiving and compressing the second portion from the second valve; a reservoir downstream from the cabin condenser and the outside condenser receiving the first and second portions; a heat exchanger downstream from the reservoir; and a bypass valve connected in parallel with the heat exchanger. The heat exchanger and the bypass valve receive portions of the refrigerant from the reservoir. A control module controls positions of the first, second and bypass valves.Type: GrantFiled: November 6, 2018Date of Patent: August 25, 2020Assignees: DENSO International America, Inc., DENSO CORPORATIONInventors: Zhiwei Shan, Mikiharu Kuwahara
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Publication number: 20200240901Abstract: A measurement apparatus for micro- and nano-scale materials and a measurement method thereof are provided. The measurement apparatus for the micro- and nano-scale material includes a transmission electron microscope to generate a magnetic field, and a conductive flat punch and a sample which are arranged in the magnetic field. The sample includes the micro- and nano-scale materials. When the current passes through the sample and the conductive flat punch, the conductive flat punch deflects laterally relative to the sample with controllable displacement driven by the electromagnetic force. The required lateral displacement of the present invention is controllable, so that the utilization rate of equipment is greatly increased, and the cost is reduced. In addition, the whole test is performed in the transmission electron microscope, so that a measurement process can be observed in real time.Type: ApplicationFiled: January 30, 2019Publication date: July 30, 2020Inventors: Zhiwei SHAN, Huanhuan LU, Ju LI
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Patent number: 10605503Abstract: A refrigerant subcooling system including a water collector configured to collect water condensate from an evaporator. A heat exchanger defines a channel configured to accommodate a refrigerant conduit extending therethrough. The heat exchanger includes a water mist generator connected to the water collector by a water line to receive the water condensate from the water collector. The water mist generator is configured to generate a mist of the water condensate that mixes with air flowing through the channel and along the refrigerant conduit to cool refrigerant therein.Type: GrantFiled: March 29, 2018Date of Patent: March 31, 2020Assignee: DENSO International America, Inc.Inventor: Zhiwei Shan
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Patent number: 10556487Abstract: The present disclosure provides an accumulating/receiving device for a heat pump system. The accumulating/receiving device includes a body, an inlet, a first outlet, and a second outlet. The body defines therein a space. The body is disposed downstream of an outside heat exchanger. The inlet is connected to the outside heat exchanger through a first conduit. The first outlet is connected to an inside heat exchanger through a second conduit. The second outlet is connected, through a bypass conduit, to a third conduit. A liquid of the refrigerant flows out of the body through the first outlet in a cooling mode. A vapor of the refrigerant flows out of the body through the second outlet in a heating mode.Type: GrantFiled: March 3, 2017Date of Patent: February 11, 2020Assignee: DENSO CORPORATIONInventor: Zhiwei Shan
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Publication number: 20190310000Abstract: A heating system including a condenser and an evaporator. A compressor is along a refrigerant line and is configured to compress refrigerant flowing to the condenser. A first valve is along the refrigerant line between the compressor and the condenser. A controller is configured to partially close the first valve when a measured temperature is below a threshold to increase discharge pressure of refrigerant compressed by the compressor and increase heat dissipation of the condenser.Type: ApplicationFiled: January 25, 2019Publication date: October 10, 2019Inventor: Zhiwei SHAN
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Publication number: 20190301779Abstract: A refrigerant subcooling system including a water collector configured to collect water condensate from an evaporator. A heat exchanger defines a channel configured to accommodate a refrigerant conduit extending therethrough. The heat exchanger includes a water mist generator connected to the water collector by a water line to receive the water condensate from the water collector. The water mist generator is configured to generate a mist of the water condensate that mixes with air flowing through the channel and along the refrigerant conduit to cool refrigerant therein.Type: ApplicationFiled: March 29, 2018Publication date: October 3, 2019Inventor: Zhiwei SHAN
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Patent number: 10428713Abstract: An exhaust heat recovery system. The system includes a heat exchanger configured to transfer heat from engine exhaust to a heat transfer fluid. A reservoir is in fluid communication with the heat exchanger. A pump is configured to pump the heat transfer fluid out of the heat exchanger and into the reservoir, and in doing so displace air out of the reservoir to the heat exchanger, when temperature of the heat transfer fluid exceeds a predetermined temperature.Type: GrantFiled: September 7, 2017Date of Patent: October 1, 2019Assignee: DENSO International America, Inc.Inventors: Dwayne Taylor, Alec Bergweiler, Zhiwei Shan, Mark Kastner
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Publication number: 20190210426Abstract: A refrigeration system for a vehicle is provided and includes inside and outside condenser circuits. The inside condenser circuit includes a first valve receiving a first portion of refrigerant out of a compressor, and a cabin condenser receiving and condensing the first portion from the first valve while heating an interior of a cabin. The outside condenser circuit includes: a second valve receiving a second portion of the refrigerant out of the compressor; an outside condenser receiving and compressing the second portion from the second valve; a reservoir downstream from the cabin condenser and the outside condenser receiving the first and second portions; a heat exchanger downstream from the reservoir; and a bypass valve connected in parallel with the heat exchanger. The heat exchanger and the bypass valve receive portions of the refrigerant from the reservoir. A control module controls positions of the first, second and bypass valves.Type: ApplicationFiled: November 6, 2018Publication date: July 11, 2019Inventors: Zhiwei SHAN, Mikiharu KUWAHARA
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Patent number: 10226980Abstract: A system for cooling a battery. The system has a cabin cooling refrigerant pathway including an orifice tube through which refrigerant flows to an evaporator. A battery cooling refrigerant pathway includes a thermal expansion valve (TXV) through which refrigerant flows to a chiller. An accumulator is in receipt of refrigerant from both the cabin cooling refrigerant pathway and the battery cooling refrigerant pathway. A battery coolant loop includes a coolant pathway for directing coolant from the chiller to the battery to cool the battery. The coolant is cooled by the chiller.Type: GrantFiled: March 23, 2017Date of Patent: March 12, 2019Assignee: DENSO CORPORATIONInventors: Zhiwei Shan, Kota Sakamoto
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Publication number: 20190072018Abstract: An exhaust heat recovery system. The system includes a heat exchanger configured to transfer heat from engine exhaust to a heat transfer fluid. A reservoir is in fluid communication with the heat exchanger. A pump is configured to pump the heat transfer fluid out of the heat exchanger and into the reservoir, and in doing so displace air out of the reservoir to the heat exchanger, when temperature of the heat transfer fluid exceeds a predetermined temperature.Type: ApplicationFiled: September 7, 2017Publication date: March 7, 2019Inventors: Dwayne TAYLOR, Alec BERGWEILER, Zhiwei SHAN, Mark KASTNER
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Publication number: 20170297407Abstract: A system for cooling a battery. The system has a cabin cooling refrigerant pathway including an orifice tube through which refrigerant flows to an evaporator. A battery cooling refrigerant pathway includes a thermal expansion valve (TXV) through which refrigerant flows to a chiller. An accumulator is in receipt of refrigerant from both the cabin cooling refrigerant pathway and the battery cooling refrigerant pathway. A battery coolant loop includes a coolant pathway for directing coolant from the chiller to the battery to cool the battery. The coolant is cooled by the chiller.Type: ApplicationFiled: March 23, 2017Publication date: October 19, 2017Inventors: Zhiwei SHAN, Kota SAKAMOTO
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Publication number: 20170267063Abstract: The present disclosure provides an accumulating/receiving device for a heat pump system. The accumulating/receiving device includes a body, an inlet, a first outlet, and a second outlet. The body defines therein a space. The body is disposed downstream of an outside heat exchanger. The inlet is connected to the outside heat exchanger through a first conduit. The first outlet is connected to an inside heat exchanger through a second conduit. The second outlet is connected, through a bypass conduit, to a third conduit. A liquid of the refrigerant flows out of the body through the first outlet in a cooling mode. A vapor of the refrigerant flows out of the body through the second outlet in a heating mode.Type: ApplicationFiled: March 3, 2017Publication date: September 21, 2017Inventor: Zhiwei SHAN
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Patent number: 8789425Abstract: A micromachined or microelectromechanical system (MEMS) based push-to-pull mechanical transformer for tensile testing of micro-to-nanometer scale material samples including a first structure and a second structure. The second structure is coupled to the first structure by at least one flexible element that enables the second structure to be moveable relative to the first structure, wherein the second structure is disposed relative to the first structure so as to form a pulling gap between the first and second structures such that when an external pushing force is applied to and pushes the second structure in a tensile extension direction a width of the pulling gap increases so as to apply a tensile force to a test sample mounted across the pulling gap between a first sample mounting area on the first structure and a second sample mounting area on the second structure.Type: GrantFiled: May 7, 2013Date of Patent: July 29, 2014Assignee: Hysitron IncorporatedInventors: Yunje Oh, Edward Cyrankowski, Zhiwei Shan, Syed Amanula Syed Asif
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Publication number: 20130247682Abstract: A micromachined or microelectromechanical system (MEMS) based push-to-pull mechanical transformer for tensile testing of micro-to-nanometer scale material samples including a first structure and a second structure. The second structure is coupled to the first structure by at least one flexible element that enables the second structure to be moveable relative to the first structure, wherein the second structure is disposed relative to the first structure so as to form a pulling gap between the first and second structures such that when an external pushing force is applied to and pushes the second structure in a tensile extension direction a width of the pulling gap increases so as to apply a tensile force to a test sample mounted across the pulling gap between a first sample mounting area on the first structure and a second sample mounting area on the second structure.Type: ApplicationFiled: May 7, 2013Publication date: September 26, 2013Applicant: Hysitron Inc.Inventors: Yunje Oh, Edward Cyrankowski, Zhiwei Shan, Syed Amanula Syed Asif