Patents by Inventor Hidetake Hayashi
Hidetake Hayashi 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: 10844973Abstract: A liquid electromagnetic valve includes an inlet connected to an external liquid source; an outlet discharging liquid entering from the inlet; a flow path forming member having a flow path connecting the inlet and the outlet formed thereto; an opening-closing member capable of opening and closing the flow path; a drive portion opening and closing the opening-closing member based on a control performed by an external element; and a minute bubble generator provided in the flow path and having plural narrowing portions for adding minute bubbles to a liquid passing through the flow path by narrowing the flow path in plural stages.Type: GrantFiled: January 26, 2018Date of Patent: November 24, 2020Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATIONInventors: Tomonori Uchiyama, Hidetake Hayashi, Masami Hattori
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Publication number: 20180149284Abstract: A liquid electromagnetic valve includes an inlet connected to an external liquid source; an outlet discharging liquid entering from the inlet; a flow path forming member having a flow path connecting the inlet and the outlet formed thereto; an opening-closing member capable of opening and closing the flow path; a drive portion opening and closing the opening-closing member based on a control performed by an external element; and a minute bubble generator provided in the flow path and having plural narrowing portions for adding minute bubbles to a liquid passing through the flow path by narrowing the flow path in plural stages.Type: ApplicationFiled: January 26, 2018Publication date: May 31, 2018Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATIONInventors: Tomonori UCHIYAMA, Hidetake Hayashi, Masami Hattori
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Patent number: 7770406Abstract: A high-pressure side discharge port of a two-stage compressor (12A) and a condenser (14A) are connected, condenser (14A) and a PMV (15A) are connected, a refrigerating side exit of PMV (15A) is connected to a medium pressure side suction port of two-stage compressor (12A) via an R capillary tube (16A) and an F evaporator (18A), connected to an F evaporator (26A) via an F capillary tube (24A), F evaporator (26A) is connected to a low-pressure side suction port of two stage compressor (12A) via a low-pressure suction pipe (28A), PMV (15A) can switch a simultaneous cooling mode and a freezing mode, and in the simultaneous cooling mode, a refrigerant flow rate toward R evaporator (18A) is adjusted by PMV (15A), and thereby a temperature difference control is performed so as to make a difference between an entrance temperature and an exit temperature of R evaporator (18A) equal to a preset temperature difference (for example, 4° C.).Type: GrantFiled: November 22, 2004Date of Patent: August 10, 2010Assignees: Kabushiki Kaisha Toshiba, Toshiba Consumer Marketing Corporation, Toshiba HA Products Co., Ltd.Inventors: Takahiro Yoshioka, Hidetake Hayashi, Minoru Temmyo
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Patent number: 7475557Abstract: The invention provides a refrigerator having a two-stage compression compressor capable of performing efficient cooling of a both a refrigerator compartment and a freezer compartment. A high-pressure delivery outlet of a two-stage compression compressor 12 is connected to a condenser 14, the condenser 14 is connected to a three-way valve 15, a first outlet of the three-way valve 15 is connected via an R capillary tube 16 and an R evaporator 18 to an intermediate-pressure intake of the two-stage compression compressor 12, is connected and via an F capillary tube 24 to an F evaporator 26, the F evaporator is connected to a low-pressure intake of the two-stage compression compressor 12 via a low-pressure suction pipe 28, the three-way valve 15 can switch between a simultaneous cooling mode and a freezer mode, and when in the simultaneous cooling mode the interior temperature of the refrigerator compartment 2 falls to a predetermined temperature it switches to the freezer mode.Type: GrantFiled: November 17, 2004Date of Patent: January 13, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Consumer Marketing Corporation, Toshiba Ha Products Co., Ltd.Inventors: Takahiro Yoshioka, Minoru Temmyo, Hidetake Hayashi
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Publication number: 20080190125Abstract: A high-pressure side discharge port of a two-stage compressor (12A) and a condenser (14A) are connected, condenser (14A) and a PMV (15A) are connected, a refrigerating side exit of PMV (15A) is connected to a medium pressure side suction port of two-stage compressor (12A) via an R capillary tube (16A) and an F evaporator (18A), connected to an F evaporator (26A) via an F capillary tube (24A), F evaporator (26A) is connected to a low-pressure side suction port of two-stage compressor (12A) via a low-pressure suction pipe (28A), PMV (15A) can switch a simultaneous cooling mode and a freezing mode, and in the simultaneous cooling mode, a refrigerant flow rate toward R evaporator (18A) is adjusted by PMV (15A), and thereby a temperature difference control is performed so as to make a difference between an entrance temperature and an exit temperature of R evaporator (18A) equal to a preset temperature difference (for example, 4° C.).Type: ApplicationFiled: November 22, 2004Publication date: August 14, 2008Inventors: Takahiro Yoshioka, Hidetake Hayashi, Minoru Temmyo
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Publication number: 20070144190Abstract: A refrigerator in which a two-stage-compression mode power-variable refrigerant circuit having a freezer cooler and fresh-food cooler is controlled in accordance with information on temperature in the fresh-food compartment. Thus, each of the freezer and fresh-food compartment is properly controlled at a temperature for storing. The refrigerant circuit includes an inverter-driven power-variable compressor having a low-pressure compression element and a high-pressure compression element, a switching valve disposed downstream of a condenser receiving gas refrigerant discharged from the compressor and selecting and controlling channel and flow rate of the refrigerant, and a freezer cooler and a fresh-food cooler, each connected with the switching valve through a pressure reducer. A frequency of the compressor is decided by a temperature in the freezer compartment and its target temperature.Type: ApplicationFiled: November 30, 2004Publication date: June 28, 2007Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Consumer Marketing Corporation, TOSHIBA HA PRODUCTS CO., LTD.Inventors: Minoru Temmyo, Takahiro Yoshioka, Hidetake Hayashi
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Patent number: 6771522Abstract: An inverter includes a DC power supply circuit, an inverter circuit having a plurality of switching elements and switching an output of the DC power supply circuit on the basis of a PWM signal to deliver a high-frequency voltage, a filter circuit converting the high-frequency voltage to a substantially sinusoidal AC voltage, a power detector detecting an effective or wattless power of the AC power, a phase angle calculator calculating a phase angle of current relative to voltage from the detected effective or wattless power, a phase detector detecting a leading or lagging state of the phase angle, and a controller decreasing a frequency of the output voltage when the phase detector detects the leading state of the phase angle, the controller increasing the frequency of the output voltage when the phase detector detects the lagging state of the phase angle.Type: GrantFiled: June 10, 2003Date of Patent: August 3, 2004Assignees: Kabushiki Kaisha Toshiba, Sawafuji Electric Co., Ltd.Inventors: Hidetake Hayashi, Hitoshi Takimoto, Touru Yoshioka
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Publication number: 20030198065Abstract: An inverter includes a DC power supply circuit, an inverter circuit having a plurality of switching elements and switching an output of the DC power supply circuit on the basis of a PWM signal to deliver a high-frequency voltage, a filter circuit converting the high-frequency voltage to a substantially sinusoidal AC voltage, a power detector detecting an effective or wattless power of the AC power, a phase angle calculator calculating a phase angle of current relative to voltage from the detected effective or wattless power, a phase detector detecting a leading or lagging state of the phase angle, and a controller decreasing a frequency of the output voltage when the phase detector detects the leading state of the phase angle, the controller increasing the frequency of the output voltage when the phase detector detects the lagging state of the phase angle.Type: ApplicationFiled: June 10, 2003Publication date: October 23, 2003Inventors: Hidetake Hayashi, Hitoshi Takimoto, Touru Yoshioka
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Patent number: 6452290Abstract: An inverter parallel operation system includes a first inverter adapted to control the output frequency thereof by controlling a control element. The system includes the inverter, and a second inverter and subsequent inverters adapted to control the output frequency thereof by controlling control elements comprising the inverters. Power being fed to a common load after a choke coil provided on the output-side end of a first filter provided on the output side of the first inverter has been connected to a choke coil provided on the output-side end of the second filter on the output side of the second and subsequent inverters. The improvement comprising controlling effective powers output by the first inverter, and the second and subsequent inverters by detecting the effective powers output by both the inverters and controlling any one or both of the output frequencies predetermined in accordance with the effective powers.Type: GrantFiled: July 11, 2001Date of Patent: September 17, 2002Assignees: Sawafuji Electric Co., Ltd., Kabushiki Kaisha ToshibaInventors: Toru Yoshioka, Masao Namai, Yuji Nakamura, Hidetake Hayashi, Hitoshi Takimoto
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Publication number: 20020027791Abstract: An inverter parallel operation system comprising a first inverter adapted to control the output frequency thereof by controlling a control element comprising the inverter, and a second inverter and subsequent inverters adapted to control the output frequency thereof by controlling control elements comprising the inverters; power being fed to a common load after a choke coil provided on the output-side end of a first filter provided on the output side of the first inverter has been connected to a choke coil provided on the output-side end of the second filter on the output side of the second and subsequent inverters; the improvement comprising controlling effective powers output by the first inverter, and the second and subsequent inverters by detecting the effective powers output by both the inverters and controlling any one or both of the output frequencies predetermined in accordance with the effective powers.Type: ApplicationFiled: July 11, 2001Publication date: March 7, 2002Inventors: Toru Yoshioka, Masao Namai, Yuji Nakamura, Hidetake Hayashi, Hitoshi Takimoto
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Publication number: 20020024828Abstract: An inverter includes a DC power supply circuit, an inverter circuit having a plurality of switching elements and switching an output of the DC power supply circuit on the basis of a PWM signal to deliver a high-frequency voltage, a filter circuit converting the high-frequency voltage to a substantially sinusoidal AC voltage, a power detector detecting an effective or wattless power of the AC power, a phase angle calculator calculating a phase angle of current relative to voltage from the detected effective or wattless power, a phase detector detecting a leading or lagging state of the phase angle, and a controller decreasing a frequency of the output voltage when the phase detector detects the leading state of the phase angle, the controller increasing the frequency of the output voltage when the phase detector detects the lagging state of the phase angle.Type: ApplicationFiled: August 27, 2001Publication date: February 28, 2002Inventors: Hidetake Hayashi, Hitoshi Takimoto, Touru Yoshioka