Patents by Inventor Ryoko Awa
Ryoko Awa 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: 10047986Abstract: A body part of a decompression device is provided with a swirling space that allows a refrigerant from a refrigerant inlet to swirl, a throttle space that depressurizes the refrigerant that has flowed out of the swirling space, and a downstream-side space that is disposed on the downstream side of the throttle space in a refrigerant flow and is formed so that the pressure of a refrigerant present in the downstream-side space becomes uniform.Type: GrantFiled: May 21, 2013Date of Patent: August 14, 2018Assignee: DENSO CORPORATIONInventors: Ryoko Awa, Etsuhisa Yamada, Haruyuki Nishijima, Yoshiaki Takano
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Patent number: 9771954Abstract: A mixing portion that mixes an injection refrigerant and a suction refrigerant is formed in a range of an internal space of a heating-side body portion of a heating-side ejector from a refrigerant injection port of a heating-side nozzle portion to an inlet of a heating-side diffuser. Further, the mixing portion is formed in a shape that gradually decreases a refrigerant passage area toward a downstream side of a refrigerant flow, and a refrigerant passage area of the inlet of the heating-side diffuser is set smaller than that of the refrigerant injection port. Thus, the flow velocity of the mixed refrigerant is decelerated to a value lower than a two phase sound velocity within the mixing portion, thereby suppressing occurrence of shock wave in the heating-side diffuser and stabilizing the pressure increasing performance in the heating-side diffuser.Type: GrantFiled: November 1, 2013Date of Patent: September 26, 2017Assignee: DENSO CORPORATIONInventors: Ryoko Awa, Haruyuki Nishijima, Yoshiaki Takano, Etsuhisa Yamada, Satoshi Itoh, Kenta Kayano
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Patent number: 9523521Abstract: In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser.Type: GrantFiled: November 1, 2013Date of Patent: December 20, 2016Assignee: DENSO CORPORATIONInventors: Ryoko Awa, Haruyuki Nishijima, Yoshiaki Takano, Etsuhisa Yamada, Satoshi Itoh, Kenta Kayano
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Publication number: 20150308462Abstract: A mixing portion that mixes an injection refrigerant and a suction refrigerant is formed in a range of an internal space of a heating-side body portion of a heating-side ejector from a refrigerant injection port of a heating-side nozzle portion to an inlet of a heating-side diffuser. Further, the mixing portion is formed in a shape that gradually decreases a refrigerant passage area toward a downstream side of a refrigerant flow, and a refrigerant passage area of the inlet of the heating-side diffuser is set smaller than that of the refrigerant injection port. Thus, the flow velocity of the mixed refrigerant is decelerated to a value lower than a two phase sound velocity within the mixing portion, thereby suppressing occurrence of shock wave in the heating-side diffuser and stabilizing the pressure increasing performance in the heating-side diffuser.Type: ApplicationFiled: November 1, 2013Publication date: October 29, 2015Applicant: DENSO CORPORATIONInventors: Ryoko AWA, Haruyuki NISHIJIMA, Yoshiaki TAKANO, Etsuhisa YAMADA, Satoshi ITOH, Kenta KAYANO
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Publication number: 20150300706Abstract: In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser.Type: ApplicationFiled: November 1, 2013Publication date: October 22, 2015Inventors: Ryoko Awa, Haruyuki Nishijima, Yoshiaki Takano, Etsuhisa Yamada, Satoshi Itoh, Kenta Kayano
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Publication number: 20150276285Abstract: A body part of a decompression device is provided with a swirling space that allows a refrigerant from a refrigerant inlet to swirl, a throttle space that depressurizes the refrigerant that has flowed out of the swirling space, and a downstream-side space that is disposed on the downstream side of the throttle space in a refrigerant flow and is formed so that the pressure of a refrigerant present in the downstream-side space becomes uniform.Type: ApplicationFiled: May 21, 2013Publication date: October 1, 2015Applicant: DENSO CORPORATIONInventors: Ryoko Awa, Etsuhisa Yamada, Haruyuki Nishijima, Yoshiaki Takano
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Patent number: 8973394Abstract: In an evaporator unit, a first evaporator is coupled to an ejector to evaporate refrigerant flowing out of the ejector, a second evaporator is coupled to a refrigerant suction port of the ejector to evaporate the refrigerant to be drawn into the refrigerant suction port, a flow amount distributor is located to adjust a flow amount of the refrigerant distributed to the nozzle portion and a flow amount of the refrigerant distributed to the second evaporator, and a throttle mechanism is provided between the flow amount distributor and the second evaporator to decompress the refrigerant flowing into the second evaporator. The flow amount distributor is adapted as a gas-liquid separation portion and as a refrigerant distribution portion for distributing separated refrigerant into the nozzle portion and the second evaporator. Furthermore, the flow amount distributor and the ejector are arranged in line in a longitudinal direction of the ejector.Type: GrantFiled: January 7, 2010Date of Patent: March 10, 2015Assignee: Denso CorporationInventors: Etsuhisa Yamada, Haruyuki Nishijima, Tomohiko Nakamura, Gouta Ogata, Hiroshi Oshitani, Ryoko Awa, Tatsuhiko Nishino, Mika Gocho
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Publication number: 20100175422Abstract: In an evaporator unit, a first evaporator is coupled to an ejector to evaporate refrigerant flowing out of the ejector, a second evaporator is coupled to a refrigerant suction port of the ejector to evaporate the refrigerant to be drawn into the refrigerant suction port, a flow amount distributor is located to adjust a flow amount of the refrigerant distributed to the nozzle portion and a flow amount of the refrigerant distributed to the second evaporator, and a throttle mechanism is provided between the flow amount distributor and the second evaporator to decompress the refrigerant flowing into the second evaporator. The flow amount distributor is adapted as a gas-liquid separation portion and as a refrigerant distribution portion for distributing separated refrigerant into the nozzle portion and the second evaporator. Furthermore, the flow amount distributor and the ejector are arranged in line in a longitudinal direction of the ejector.Type: ApplicationFiled: January 7, 2010Publication date: July 15, 2010Applicant: DENSO CORPORATIONInventors: Etsuhisa Yamada, Haruyuki Nishijima, Tomohiko Nakamura, Gouta Ogata, Hiroshi Oshitani, Ryoko Awa, Tatsuhiko Nishino, Mika Gocho