Patents by Inventor Hiroshi Yoh
Hiroshi Yoh 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: 11920805Abstract: The present invention provides a heating, ventilation, and air-conditioning (HVAC) system using an A2L refrigerant and a method of installing the HVAC system in a building. The HVAC system includes an indoor unit having a heat exchanger that uses an A2L refrigerant, a blower, an outdoor unit, an A2L control board, and one or more A2L sensors configured to detect an amount of A2L refrigerant. In one or more embodiments, the indoor unit is electrically coupled to the blower, the A2L control board, and the outdoor unit. Also, in one or more embodiments, the A2L control board is also electrically coupled to the blower and the one or more A2L sensors.Type: GrantFiled: February 1, 2021Date of Patent: March 5, 2024Assignee: Goodman Manufacturing Company LPInventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20230266026Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.Type: ApplicationFiled: April 24, 2023Publication date: August 24, 2023Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20230250981Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.Type: ApplicationFiled: April 19, 2023Publication date: August 10, 2023Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Patent number: 11668483Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.Type: GrantFiled: February 1, 2021Date of Patent: June 6, 2023Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Patent number: 11662110Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.Type: GrantFiled: February 1, 2021Date of Patent: May 30, 2023Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20220243940Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.Type: ApplicationFiled: February 1, 2021Publication date: August 4, 2022Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20220243941Abstract: The present invention provides a system for detecting an amount of R-454b refrigerant in an air temperature controller using an R-454b refrigerant, and a method of installing a configuration of R-454b sensors in the air temperature controller using an R-454b refrigerant. The system includes an R-454b control board, a first R-454b sensor, and a second R-454b sensor. The first R-454b sensor and the second R-454b sensor are coupled in series and electrically coupled to the R-454b control board. Each of the first R-454b sensor and the second R-454b sensor include sensing components configured to detect the amount of R-454b refrigerant.Type: ApplicationFiled: February 1, 2021Publication date: August 4, 2022Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20220243938Abstract: The present invention provides a heating, ventilation, and air-conditioning (HVAC) system using an A2L refrigerant and a method of installing the HVAC system in a building. The HVAC system includes an indoor unit having a heat exchanger that uses an A2L refrigerant, a blower, an outdoor unit, an A2L control board, and one or more A2L sensors configured to detect an amount of A2L refrigerant. In one or more embodiments, the indoor unit is electrically coupled to the blower, the A2L control board, and the outdoor unit. Also, in one or more embodiments, the A2L control board is also electrically coupled to the blower and the one or more A2L sensors.Type: ApplicationFiled: February 1, 2021Publication date: August 4, 2022Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20220243939Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.Type: ApplicationFiled: February 1, 2021Publication date: August 4, 2022Inventors: Douglas Notaro, Masahiro Honda, Mark Kendall, Hiroshi Yoh, Yenny Natali Martinez, Patrick Wang, Roberto Flores, Timmy Ta
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Publication number: 20220003472Abstract: The technique in PTL 1 is incapable of grasping a decrease in the amount of a refrigerant from an initial amount of the refrigerant, and the determination of the amount of the refrigerant is insufficient for the purpose other than protection of a compressor. A refrigeration cycle apparatus includes an air temperature sensor, and a condensation temperature sensor. The air temperature sensor detects an air temperature, which is a temperature of air that flows into a condenser. The condensation temperature sensor detects a condensation temperature of the refrigerant that flows through the condenser. The apparatus is configured to acquire a temperature difference between the air temperature and the condensation temperature. The apparatus is further configured to determine an amount of the refrigerant included in the refrigerant circuit by comparing a first temperature difference and a second temperature difference with each other. The first temperature difference is a temperature difference at a first timing.Type: ApplicationFiled: November 12, 2019Publication date: January 6, 2022Applicant: Daikin Industries, Ltd.Inventors: Noriyuki OKUDA, Tooru NISHIKAWA, Masahiro HONDA, Hiroshi YOH
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Patent number: 10386078Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, a first temperature sensor provided in a room, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The temperature sensor detects an indoor temperature in the room. The controller causes the gas furnace unit to operate as a heat source unit when a difference value obtained by subtracting the indoor temperature from a set temperature is equal to or greater than a first threshold at startup, and causes the heat pump unit to operate as a heat source unit when the difference value is less than the first threshold at startup.Type: GrantFiled: February 2, 2015Date of Patent: August 20, 2019Assignee: Daikin Industries, Ltd.Inventors: Hiroshi Yoh, Michio Moriwaki, Masakazu Okamoto
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Patent number: 10371393Abstract: An air conditioning system includes a heat pump having a refrigerant radiator, a gas furnace unit having a heating section to heat passing air, a blower generating air flow through the radiator and the heating section, and a controller controlling operation of the heat pump unit, the gas furnace unit, and the blower. The controller has a first operating mode in which the gas furnace unit operates alone as a heat source unit, a second operating mode in which the heat pump unit operates alone as a heat source unit, and a third operating mode in which the gas furnace unit and the heat pump unit operate at the same time as a heat source unit. The controller is configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air.Type: GrantFiled: September 29, 2014Date of Patent: August 6, 2019Assignee: Daikin Industries, Ltd.Inventors: Masakazu Okamoto, Michio Moriwaki, Hiroshi Yoh
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Patent number: 9927132Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The controller operates either the heat pump unit or the gas furnace unit as a heat source unit, generates a capacity command used to variably adjust operating capacity of the heat source unit, and executes switch control in order to switch the heat source unit from either one of the heat pump unit or the gas furnace unit to the other when an operating capacity level designated in the capacity command is within a predetermined numerical range for a predetermined time.Type: GrantFiled: February 2, 2015Date of Patent: March 27, 2018Assignee: Daikin Industries, Ltd.Inventors: Michio Moriwaki, Hiroshi Yoh, Masakazu Okamoto
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Patent number: 9803897Abstract: An air conditioning system includes a refrigerant circuit including a compressor, an indoor heat exchanger, a first expansion valve, a gas-liquid separator, a second expansion valve, and an outdoor heat exchanger which are sequentially connected together to perform a two-stage expansion refrigeration cycle. The refrigerant circuit further includes: a gas injection pipe through which intermediate-pressure gas refrigerant in the gas-liquid separator flows into an intermediate port of the compressor, and a liquid-gas heat exchanger configured to exchange heat between low-pressure gas refrigerant obtained by evaporating refrigerant in the outdoor heat exchanger and travelling toward the compressor and intermediate-pressure liquid refrigerant travelling from the gas-liquid separator toward the second expansion valve.Type: GrantFiled: August 29, 2012Date of Patent: October 31, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shuji Furui, Kazuhiro Furusho, Hiroshi Yoh
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Patent number: 9581365Abstract: In an air conditioner which is a refrigerating apparatus, a superheat degree controller is provided, which is configured to control, in an evaporation mode of an outdoor heat exchanger, the opening degree of an expansion valve such that the superheat degree of refrigerant whose flows are joined together after passing through a main heat exchange part and an auxiliary heat exchange part reaches a predetermined superheat degree. Moreover, in the air conditioner, a flow volume adjustment valve configured to adjust, in the evaporation mode of the outdoor heat exchanger, a flow ratio of refrigerant in the heat exchange parts and a flow ratio controller configured to control the flow volume adjustment valve such that refrigerant temperatures after passage through the heat exchange parts are substantially equal to each other are provided.Type: GrantFiled: September 3, 2012Date of Patent: February 28, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shuji Furui, Kazuhiro Furusho, Hirokazu Fujino, Hiroshi Yoh
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Publication number: 20150276280Abstract: In an air conditioner which is a refrigerating apparatus, a superheat degree controller is provided, which is configured to control, in an evaporation mode of an outdoor heat exchanger, the opening degree of an expansion valve such that the superheat degree of refrigerant whose flows are joined together after passing through a main heat exchange part and an auxiliary heat exchange part reaches a predetermined superheat degree. Moreover, in the air conditioner, a flow volume adjustment valve configured to adjust, in the evaporation mode of the outdoor heat exchanger, a flow ratio of refrigerant in the heat exchange parts and a flow ratio controller configured to control the flow volume adjustment valve such that refrigerant temperatures after passage through the heat exchange parts are substantially equal to each other are provided.Type: ApplicationFiled: September 3, 2012Publication date: October 1, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shuji Furui, Kazuhiro Furusho, Hirokazu Fujino, Hiroshi Yoh
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Publication number: 20150219342Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, a first temperature sensor provided in a room, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The temperature sensor detects an indoor temperature in the room. The controller causes the gas furnace unit to operate as a heat source unit when a difference value obtained by subtracting the indoor temperature from a set temperature is equal to or greater than a first threshold at startup, and causes the heat pump unit to operate as a heat source unit when the difference value is less than the first threshold at startup.Type: ApplicationFiled: February 2, 2015Publication date: August 6, 2015Inventors: Hiroshi YOH, Michio MORIWAKI, Masakazu OKAMOTO
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Publication number: 20150219343Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The controller operates either the heat pump unit or the gas furnace unit as a heat source unit, generates a capacity command used to variably adjust operating capacity of the heat source unit, and executes switch control in order to switch the heat source unit from either one of the heat pump unit or the gas furnace unit to the other when an operating capacity level designated in the capacity command is within a predetermined numerical range for a predetermined time.Type: ApplicationFiled: February 2, 2015Publication date: August 6, 2015Inventors: Michio MORIWAKI, Hiroshi YOH, Masakazu OKAMOTO
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Publication number: 20150090803Abstract: An air conditioning system includes a heat pump having a refrigerant radiator, a gas furnace unit having a heating section to heat passing air, a blower generating air flow through the radiator and the heating section, and a controller controlling operation of the heat pump unit, the gas furnace unit, and the blower. The controller has a first operating mode in which the gas furnace unit operates alone as a heat source unit, a second operating mode in which the heat pump unit operates alone as a heat source unit, and a third operating mode in which the gas furnace unit and the heat pump unit operate at the same time as a heat source unit. The controller is configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air.Type: ApplicationFiled: September 29, 2014Publication date: April 2, 2015Inventors: Masakazu OKAMOTO, Michio MORIWAKI, Hiroshi YOH
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Patent number: 8936448Abstract: A rotary compressor includes a cylinder having an annular cylinder space, a piston eccentrically disposed relative to the cylinder, and a drive shaft (53) connected to the piston. The piston has a piston portion eccentrically rotatable relative to the cylinder, and a piston end plate closing the cylinder space. The cylinder has an end plate storage space storing the piston end plate in an eccentrically rotatable manner. The cylinder space forms a main cylinder chamber, and the end plate storage space forms a sub-cylinder chamber.Type: GrantFiled: March 18, 2011Date of Patent: January 20, 2015Assignee: Daikin Industries, Ltd.Inventors: Tetsuya Okamoto, Yoshitaka Shibamoto, Kazuhiro Furusho, Takazou Sotojima, Takayuki Kawano, Hiroshi Yoh