Patents by Inventor Takuya Matsuda
Takuya Matsuda 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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Publication number: 20210048199Abstract: An air-conditioning system according to an embodiment of the present disclosure is an air-conditioning system that conditions air of a room partitioned into a plurality of rectangular air-conditioning target areas in a plan view, and includes a use-side unit that is installed above a ceiling of one of the air-conditioning target areas and is configured to perform air-conditioning operation to condition air of the one air-conditioning target area.Type: ApplicationFiled: March 6, 2018Publication date: February 18, 2021Inventors: Shogo TAMAKI, Mamoru HAMADA, Takuya MATSUDA
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Patent number: 10907866Abstract: A heat exchanger group includes a first heat exchanger, a second heat exchanger, and a third heat exchanger. In a cooling operation, refrigerant discharged from the compressor is divided into two. One refrigerant is delivered to the second heat exchanger, and the other refrigerant is delivered to the third heat exchanger. The second heat exchanger performs heat exchange to turn the refrigerant into two-phase refrigerant. The third heat exchanger performs heat exchange to turn the refrigerant into two-phase refrigerant. The refrigerant that has flowed through the second heat exchanger and the refrigerant that has flowed through the third heat exchanger meet, and the resultant refrigerant is delivered to the first heat exchanger. The first heat exchanger performs heat exchange, so that the two-phase refrigerant turns into liquid refrigerant and flows through the first heat exchanger.Type: GrantFiled: July 8, 2016Date of Patent: February 2, 2021Assignee: Mitsubishi Electric CorporationInventors: Takuya Matsuda, Takeshi Hatomura, Yutaka Aoyama, Takumi Nishiyama
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Publication number: 20210003306Abstract: An air conditioning apparatus uses a heat medium containing at least one of cold water and hot water. The air conditioning apparatus includes: a heat source device; a heat exchanger configured to exchange heat between the heat medium and air; a flow rate control valve configured to control a flow rate at which the heat medium is supplied to the heat exchanger; a temperature sensor configured to detect a temperature of the heat medium discharged from the heat exchanger; and a failure determination unit configured to detect presence or absence of an abnormality in a flow path of the heat medium based on the temperature detected by the temperature sensor and a commanded degree of opening for the flow rate control valve.Type: ApplicationFiled: May 2, 2018Publication date: January 7, 2021Inventors: Satoru YANACHI, So NOMOTO, Takuya MATSUDA, Naofumi TAKENAKA, Kimitaka KADOWAKI
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Publication number: 20200400350Abstract: A refrigeration cycle apparatus includes a compressor, a four-way valve, a second flow path switching unit, a first outdoor heat exchanger, a second outdoor heat exchanger, a first indoor heat exchanger and a second flow path switching unit. The second flow path switching unit switches between a third state in which the first port, the second port, the first outdoor heat exchanger, the fourth port, the third port, the second heat exchanger, the fifth port and the sixth port are successively connected in series, and a fourth state in which the sixth port, the fourth port, the first heat exchanger, the second port and the first port are successively connected in series, and the sixth port, the fifth port, the second heat exchanger, the third port and the first port are successively connected in series.Type: ApplicationFiled: May 10, 2018Publication date: December 24, 2020Inventor: Takuya MATSUDA
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Patent number: 10844485Abstract: A fluid passage structure includes a housing and first wall portions. The housing includes an outer surface located at an end of a first direction and two passages separated from each other provided inside. Each of two passages includes at least one fluid chamber, openings that open to the outer surface, and branch paths that is coupled to the fluid chamber. The fluid chambers of the two passages are arranged alternately in the first direction. The branch paths include at least one of: branch paths that couple at least one of the openings with one fluid chamber; and branch paths that couple one fluid chamber with another fluid chamber. The first wall portions are provided in the housing, face the fluid chamber, and are arranged in the first direction via the fluid chamber.Type: GrantFiled: June 26, 2017Date of Patent: November 24, 2020Assignee: Kabushiki Kaisha ToshibaInventors: Shinya Higashi, Takahiro Terada, Takuya Matsuda, Shiguma Kato, Masayuki Tanaka
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Publication number: 20200363086Abstract: A controller has a timer operation mode in which the operation of a refrigeration cycle that operates as a heat source or a cold source is started before a set operation start time of an indoor fan by a preliminary operation time period. In the timer operation mode, the controller calculates a heat capacity of water or brine, calculates a heat storage amount of a second heat medium from a temperature detected by a temperature sensor and the heat capacity, and determines the preliminary operation time period from the heat storage amount. By determining the preliminary operation time period in this manner, timer operation can be performed such that air at an appropriate temperature is blown from an indoor unit at the operation start time of the indoor fan, from the initial time at which an air conditioning apparatus is installed.Type: ApplicationFiled: April 3, 2018Publication date: November 19, 2020Inventors: Takuya MATSUDA, Naofumi TAKENAKA, Kimitaka KADOWAKI, Yuji MOTOMURA
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Publication number: 20200355415Abstract: An air conditioning system includes: a plurality of indoor units each configured to condition air in a target space; and an outdoor unit connected to the plurality of indoor units. Each of the plurality of indoor units has a surface temperature measuring device configured to measure a surface temperature of an object in the target space. When a total of capacities requested by the plurality of indoor units is larger than a capacity of the outdoor unit, each of the plurality of indoor units performs a process corresponding to a change amount of the surface temperature per unit time.Type: ApplicationFiled: February 26, 2018Publication date: November 12, 2020Inventors: Satoru YANACHI, So NOMOTO, Takuya MATSUDA, Naofumi TAKENAKA, Kimitaka KADOWAKI
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Patent number: 10816242Abstract: A refrigeration cycle apparatus includes a refrigerant circuit in which a compressor, a first heat exchanger, an expansion mechanism, and a second heat exchanger are connected by pipes. The first heat exchanger includes a first refrigerant passage and a second refrigerant passage that share a plurality of fins with each other and provided in parallel in the refrigerant circuit. The apparatus further includes a high-and-low-pressure switching mechanism which is located on an inlet side of the second refrigerant passage of the first heat exchanger in flowing of refrigerant in an operation in which the first heat exchanger functions as a condenser, and which performs switching between flow directions of the refrigerant. The apparatus further includes a refrigerant blocking mechanism located on an outlet side of the second refrigerant passage of the first heat exchanger in the flowing of the refrigerant in the operation, and which blocks the flowing of the refrigerant.Type: GrantFiled: July 29, 2016Date of Patent: October 27, 2020Assignee: Mitsubishi Electric CorporationInventors: Chitose Tanaka, Takuya Matsuda, Kosuke Tanaka
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Publication number: 20200318840Abstract: A storage device of a system control device stores grouping information that defines an association among a refrigerant sensor, a plurality of indoor units, at least one outdoor unit, and a plurality of refrigerant leakage suppression devices. When refrigerant leakage is detected by the refrigerant sensor, the system control device performs a process for specifying, from the plurality of indoor units, an indoor unit in which the refrigerant leakage has occurred. Further, the system control device makes reference to the grouping information to operate a refrigerant leakage suppression device corresponding to the indoor unit specified by performing the above-described process.Type: ApplicationFiled: May 24, 2017Publication date: October 8, 2020Inventors: Makoto WADA, Takuya MATSUDA, Katsuhiro ISHIMURA
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Publication number: 20200301487Abstract: Provided is an ambient temperature estimating device, ambient temperature estimating method, program, and system that are able to realize both high robustness and high ambient temperature estimation accuracy. An ambient temperature estimating device includes a neural network, a temperature acquisition unit configured to acquire one or more temperature values inside the ambient temperature estimating device, and a neural network calculator configured to estimate an ambient temperature around the ambient temperature estimating device using the neural network. Input values inputted to the neural network by the neural network calculator include the temperature values acquired by the temperature acquisition unit and a heat source control value for controlling a heat source inside the ambient temperature estimating device.Type: ApplicationFiled: September 7, 2018Publication date: September 24, 2020Applicant: EIZO CorporationInventors: Yusuke BAMBA, Mamoru OGAKI, Koichi TANOIRI, Keita HASHI, Takuya MATSUDA
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Publication number: 20200300513Abstract: A refrigeration cycle apparatus includes: a casing; an air handling unit accommodated in the casing and including a first duct and a first outlet, a second duct and a second outlet, a first fan and a second fan; and a refrigerant circuit configured to circulate refrigerant in the refrigerant circuit and including a first heat exchanger and a second heat exchanger.Type: ApplicationFiled: September 26, 2017Publication date: September 24, 2020Inventors: Takuya MATSUDA, Shinichi UCHINO, Kaoru HAYASHIBARA, Nobu IWATA
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Patent number: 10775082Abstract: A refrigerant circuit of a refrigeration cycle apparatus has a compressor, a cooling-heating switching mechanism, a condenser, a refrigerant expansion mechanism, and an evaporator. During operation of the compressor, the refrigerant expansion mechanism opens the refrigerant circuit, a first three-way valve connects an outlet of the compressor to the condenser, and a second three-way valve connects an inlet of the compressor to the evaporator. During stop of the compressor, the refrigerant expansion mechanism closes the refrigerant circuit, the first three-way valve connects the outlet of the compressor to the evaporator, and the second three-way valve connects the inlet of the compressor to the evaporator.Type: GrantFiled: April 7, 2016Date of Patent: September 15, 2020Assignee: Mitsubishi Electric CorporationInventors: Chitose Tanaka, Takuya Matsuda, Kosuke Tanaka
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Patent number: 10774420Abstract: According to an embodiment, a flow passage structure includes a member. The member has a surface and is provided with a first passage, a plurality of first openings, a second passage, and a plurality of second openings. The first passage includes a plurality of first closed path portions connected to each other. The first openings is connected to the first passage and is opened in the surface. The second passage includes a plurality of second closed path portions connected to each other. The second openings is connected to the second passage and is opened in the surface. The first closed path portions pass through the second closed path portions while being isolated from the second closed path portions. The second closed path portions pass through the first closed path portions while being isolated from the first closed path portions.Type: GrantFiled: June 26, 2017Date of Patent: September 15, 2020Assignee: Kabushiki Kaisha ToshibaInventors: Takahiro Terada, Shiguma Kato, Shinya Higashi, Masayuki Tanaka, Takuya Matsuda
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Patent number: 10777725Abstract: A thermoelectric generator includes a tube in which a first fluid flows, a power generation module, a holding member, and a heat exchanging fin. The power generation module includes a thermoelectric conversion element. The holding member holds a stacked body in which the power generation module and the tube are stacked with each other such that heat can be transferred between the power generation module and the tube. Both end portions of the holding member are located and fixed outside both ends of the stacked body. The heat exchanging fin includes a pair of end fin portions provided on the reverse surface of the holding member at portions corresponding to the both ends of the stacked body, and an intermediate fin located between the pair of end fin portions and higher in stiffness than the pair of end fin portions.Type: GrantFiled: March 24, 2017Date of Patent: September 15, 2020Assignee: DENSO CORPORATIONInventors: Takuya Matsuda, Shinya Kitagawa, Yoshiyuki Okamoto
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Patent number: 10760832Abstract: An air-conditioning apparatus includes a main circuit in which a compressor, a refrigerant flow switching device, a load side heat exchanger, a load side expansion device, and a plurality of heat source side heat exchangers are sequentially connected. When the plurality of heat source side heat exchangers are used as condensers, the first heat source side heat exchanger and the second heat source side heat exchanger are connected in series. When the plurality of heat source side heat exchangers are used as evaporators, the first heat source side heat exchanger and the second heat source side heat exchanger are connected in parallel. A distribution adjustment header on an inlet side of at least either the first heat source side heat exchanger or the second heat source side heat exchanger when the plurality of heat source side heat exchangers are used as evaporators.Type: GrantFiled: May 24, 2017Date of Patent: September 1, 2020Assignee: Mitsubishi Electric CorporationInventors: Takeshi Hatomura, Keisuke Hokazono, Yutaka Aoyama, Shuhei Mizutani, Takuya Matsuda, Ryota Akaiwa, Yoji Onaka
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Patent number: 10753645Abstract: Provided is a refrigeration cycle apparatus configured to perform a heating operation and a simultaneous heating and hot-water supply operation. The refrigeration cycle apparatus is configured to execute an operation mode circulating refrigerant through, in order, a discharge outlet of a compressor, a first heat exchanger, an expansion device, a second heat exchanger provided to a water tank, and a suction inlet of the compressor, and causing the refrigerant flowing through the second heat exchanger to evaporate by heat generated by a heat source provided to the water tank.Type: GrantFiled: February 10, 2016Date of Patent: August 25, 2020Assignee: Mitsubishi Electric CorporationInventors: Takuya Matsuda, Kosuke Tanaka
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Patent number: 10733964Abstract: Provided are an information processing apparatus and program that are able to improve representable gradations in a pseudo manner while reducing flicker including a random number generator configured to generate a random number sequence; a comparator configured to make a comparison between a threshold and a random number value, the threshold being associated with any number of lower bits, the any number of lower bits forming input image data with any number of upper bits, the random number value forming the random number sequence.Type: GrantFiled: December 5, 2016Date of Patent: August 4, 2020Assignee: EIZO CorporationInventors: Mamoru Ogaki, Hiroki Matsuzaki, Reo Aoki, Takashi Nakamae, Masafumi Higashi, Keita Hashi, Takuya Matsuda
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Publication number: 20200232095Abstract: According to an embodiment, a flow passage structure includes a member. The member has a surface and is provided with a first passage, a plurality of first openings, a second passage, and a plurality of second openings. The first passage includes a plurality of first closed path portions connected to each other. The first openings is connected to the first passage and is opened in the surface. The second passage includes a plurality of second closed path portions connected to each other. The second openings is connected to the second passage and is opened in the surface. The first closed path portions pass through the second closed path portions while being isolated from the second closed path portions. The second closed path portions pass through the first closed path portions while being isolated from the first closed path portions.Type: ApplicationFiled: June 26, 2017Publication date: July 23, 2020Applicant: Kabushiki Kaisha ToshibaInventors: Takahiro TERADA, Shiguma KATO, Shinya HIGASHI, Masayuki TANAKA, Takuya MATSUDA
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Publication number: 20200191447Abstract: In an operation mode in which an indoor heat exchanger is used as a condenser, a refrigeration cycle apparatus changes to an operation state in which a water heat exchanger provided to a hot water storage tank is used as an evaporator and refrigerant flowing through the water heat exchanger is evaporated by heat generated by a heat source such as an electric heater, under a low outdoor air temperature condition.Type: ApplicationFiled: September 26, 2017Publication date: June 18, 2020Inventors: Takuya MATSUDA, Kosuke TANAKA
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Patent number: 10670344Abstract: A heat exchanger includes: a heat exchange unit group made up of a plurality of heat exchange units arranged in a row direction, the heat exchange units including a plurality of heat transfer tubes configured to allow refrigerant to pass therethrough, the heat transfer tubes being arrayed in a level direction, the level direction being perpendicular to the direction of air flow, and a plurality of fins stacked to allow air to pass therethrough in the air flow direction; and headers, disposed on both ends of the heat exchange unit group, the headers being connected with ends of the plurality of heat transfer tubes, the heat exchange unit group including one or more bend sections bent in the row direction, the headers including one header provided on one end of the heat exchange unit group in common for the plurality of rows of the heat exchange units, and a plurality of separate headers provided separately for the heat exchange units on the other end of the heat exchange unit group, the plurality of separate hType: GrantFiled: August 4, 2014Date of Patent: June 2, 2020Assignee: Mitsubishi Electric CorporationInventors: Daisuke Ito, Akira Ishibashi, Takashi Okazaki, Shinya Higashiiue, Takuya Matsuda, Atsushi Mochizuki