Patents by Inventor Yasuhide Hayamaru

Yasuhide Hayamaru 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).

  • Publication number: 20210180842
    Abstract: An air conditioner (10) includes a refrigerant circuit (13) and refrigerant. The refrigerant circuit (13) has a compressor (1), a condenser (2), a pressure-regulating valve (3), and an evaporator (4). The refrigerant is R32. The pressure-regulating valve (3) includes a flow path (33) causing the refrigerant flowing from the condenser (2) to flow to the evaporator (4), a pressure reference chamber (S2) partitioned from the flow path (33) and filled with inert gas, and a valve portion (34) disposed in the flow path (33). The pressure-regulating valve (3) is configured to adjust a degree of opening of the valve portion (34) to adjust a flow rate of the refrigerant flowing through the flow path (33). The valve portion (34) is configured to increase the degree of opening when a pressure in the flow path (33) is higher than a pressure in the pressure reference chamber (S2), and reduce the degree of opening when the pressure in the flow path (33) is lower than the pressure in the pressure reference chamber (S2).
    Type: Application
    Filed: February 22, 2021
    Publication date: June 17, 2021
    Inventors: Yusuke TASHIRO, Komei NAKAJIMA, Masakazu SATO, Yusuke ADACHI, Yasuhide HAYAMARU
  • Publication number: 20210172659
    Abstract: An air conditioner (10) includes a refrigerant circuit (13) and refrigerant. The refrigerant circuit (13) has a compressor (1), a condenser (2), a pressure-regulating valve (3), and an evaporator (4). The refrigerant is R32. The pressure-regulating valve (3) includes a flow path (33) causing the refrigerant flowing from the condenser (2) to flow to the evaporator (4), a pressure reference chamber (S2) partitioned from the flow path (33) and filled with inert gas, and a valve portion (34) disposed in the flow path (33). The pressure-regulating valve (3) is configured to adjust a degree of opening of the valve portion (34) to adjust a flow rate of the refrigerant flowing through the flow path (33). The valve portion (34) is configured to increase the degree of opening when a pressure in the flow path (33) is higher than a pressure in the pressure reference chamber (S2), and reduce the degree of opening when the pressure in the flow path (33) is lower than the pressure in the pressure reference chamber (S2).
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Inventors: Yusuke TASHIRO, Komei NAKAJIMA, Masakazu SATO, Yusuke ADACHI, Yasuhide HAYAMARU
  • Patent number: 11009247
    Abstract: An air conditioner includes a switching valve, a flow rate restricting portion and an on-off valve. The switching valve provided in a flow path between a compressor and an outdoor heat exchanger. The outdoor heat exchanger includes a heat exchange portion and a heat exchange portion. During heating operation, the switching valve causes a second connection port, a third connection port and a first connection port to communicate with one another. The flow rate restricting portion and the on-off valve are connected in series between an outlet and an inlet of the compressor during the heating operation, to bypass a part of refrigerant. During defrosting operation of the heat exchange portion, the switching valve is configured such that a fourth connection port and the second connection port communicate with each other, and the third connection port and the first connection port communicate with each other.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 18, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Tashiro, Yasuhide Hayamaru
  • Publication number: 20210095905
    Abstract: The refrigeration cycle apparatus includes a refrigerant circuit, a controller to control the refrigerant circuit, a bypass flow path, and a flow control valve. The bypass flow path communicates between the discharge side of the compressor and the first outdoor heat exchanger or between the discharge side of the compressor and the second outdoor heat exchanger. The flow control valve is provided to the bypass flow path. The refrigerant circuit is configured to be able to perform a heating defrosting simultaneous operation. The heating defrosting simultaneous operation is an operation of supplying part of the refrigerant discharged from the compressor to one of the first outdoor heat exchanger and the second outdoor heat exchanger via the bypass flow path, causing the other of the first outdoor heat exchanger and the second outdoor heat exchanger to serve as an evaporator, and causing the indoor heat exchanger to serve as a condenser.
    Type: Application
    Filed: May 23, 2018
    Publication date: April 1, 2021
    Inventors: Yusuke TASHIRO, Yasuhide HAYAMARU, Masakazu KONDO, Masakazu SATO, Naoki NAKAGAWA, Atsushi KAWASHIMA
  • Publication number: 20210080161
    Abstract: A refrigeration cycle apparatus includes: a first four-way valve having first to fourth ports; a second four-way valve and a third four-way valve each having fifth to eighth ports; a compressor; a discharge pipe connecting a discharge port of the compressor and the first port; a suction pipe connecting a suction port of the compressor and the second port; a first high pressure pipe connecting the discharge pipe and the fifth ports; a second high pressure pipe connecting the third port and the first high pressure pipe; a first valve provided at the first high pressure pipe; a second valve provided at the second high pressure pipe; a low pressure pipe connecting the suction pipe and the sixth ports; a first outdoor heat exchanger connected with the seventh port of the second four-way valve; a second outdoor heat exchanger connected with the seventh port of the third four-way valve; and an indoor heat exchanger connected with the fourth port.
    Type: Application
    Filed: June 19, 2018
    Publication date: March 18, 2021
    Inventors: Yusuke TASHIRO, Yasuhide HAYAMARU, Masakazu KONDO, Masakazu SATO, Naoki NAKAGAWA, Atsushi KAWASHIMA
  • Publication number: 20210080160
    Abstract: When a controller performs a defrosting operation in which frost on an outdoor heat exchanger is caused to be melted, the controller is configured to perform a first defrosting control in which a switching state of a switching device is set to a first state, after the controller performs the first defrosting control, perform a second defrosting control in which the switching state of the switching device is set to a second state, and after the controller performs the second defrosting control, perform a third defrosting control in which the switching state of the switching device is set to the first state.
    Type: Application
    Filed: January 26, 2018
    Publication date: March 18, 2021
    Inventors: Yusuke TASHIRO, Yasuhide HAYAMARU, Masakazu KONDO, Masakazu SATO, Naoki NAKAGAWA, Atsushi KAWASHIMA
  • Patent number: 10731904
    Abstract: An air conditioner includes a compressor, a condenser, an expansion valve, an evaporator, and a temperature detection unit. The temperature detection unit is attached to the condenser and is configured to detect a temperature of the refrigerant in the condenser. The expansion valve is configured to be capable of adjusting a flow rate per unit time of the refrigerant flowing through the expansion valve by adjusting a degree of opening of the expansion valve. The degree of opening of the expansion valve is increased when the temperature of the refrigerant detected by the temperature detection unit rises, and the degree of opening of the expansion valve is decreased when the temperature of the refrigerant detected by the temperature detection unit falls.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: August 4, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Komei Nakajima, Yusuke Tashiro, Yasuhide Hayamaru, Yusuke Adachi
  • Patent number: 10712061
    Abstract: An air conditioning apparatus includes a flow path switching valve. An outdoor heat exchanger is divided into a first heat exchanger and a second heat exchanger. During heating operation, a refrigerant is diverted and supplied to the first heat exchanger and the second heat exchanger. During the heating operation, the flow path switching valve combines the flows of the refrigerants discharged from the first heat exchanger and the second heat exchanger, and returns the resultant refrigerant to a refrigerant inlet of a compressor. Three ports of the flow path switching valve are internally communicated with one another while being isolated from an other single port during the heating operation. Two ports of the flow path switching valve are internally communicated with each other and other two ports are internally communicated with each other during defrosting operation of the first heat exchanger or the second heat exchanger.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Tashiro, Yasuhide Hayamaru
  • Publication number: 20200116374
    Abstract: An air conditioner includes a switching valve, a flow rate restricting portion and an on-off valve. The switching valve provided in a flow path between a compressor and an outdoor heat exchanger. The outdoor heat exchanger includes a heat exchange portion and a heat exchange portion. During heating operation, the switching valve causes a second connection port, a third connection port and a first connection port to communicate with one another. The flow rate restricting portion and the on-off valve are connected in series between an outlet and an inlet of the compressor during the heating operation, to bypass a part of refrigerant. During defrosting operation of the heat exchange portion, the switching valve is configured such that a fourth connection port and the second connection port communicate with each other, and the third connection port and the first connection port communicate with each other.
    Type: Application
    Filed: June 27, 2017
    Publication date: April 16, 2020
    Inventors: Yusuke TASHIRO, Yasuhide HAYAMARU
  • Publication number: 20200018530
    Abstract: An air conditioner includes a refrigerant circuit and refrigerant. The refrigerant circuit has a compressor, a condenser, a pressure-regulating valve, and an evaporator. The refrigerant is R32. The pressure-regulating valve includes a flow path causing the refrigerant flowing from the condenser to flow to the evaporator, a pressure reference chamber partitioned from the flow path and filled with inert gas, and a valve portion. The pressure-regulating valve is configured to adjust a degree of opening of the valve portion to adjust a flow rate of the refrigerant flowing through the flow path. The valve portion is configured to increase the degree of opening when a pressure in the flow path is higher than a pressure in the pressure reference chamber, and reduce the degree of opening when the pressure in the flow path is lower than the pressure in the pressure reference chamber.
    Type: Application
    Filed: October 28, 2016
    Publication date: January 16, 2020
    Inventors: Yusuke TASHIRO, Komei NAKAJIMA, Masakazu SATO, Yusuke ADACHI, Yasuhide HAYAMARU
  • Publication number: 20190257532
    Abstract: An indoor unit for an air-conditioning unit that can prevent dew condensation on an air-flow-direction control plate in a vicinity of a heat exchanger, and includes a casing, an air inlet on the casing, an air outlet opening in a bottom surface of the casing, a heat exchanger in an air passage extending from the air inlet to the air outlet, a fan on a windward side of the heat exchanger in the air passage, and an air -flow-direction control plate in the air passage between the heat exchanger and the air outlet. The heat exchanger includes a plurality of heat exchanger blocks arranged in a front-and-rear direction of the casing, and includes a refrigerant inlet through which refrigerant flows into the heat exchanger, and a refrigerant outlet through which the refrigerant flows out of the heat exchanger.
    Type: Application
    Filed: November 9, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akinori SAKABE, Masayuki OISHI, Yasuhide HAYAMARU, Seiji HIRAKAWA
  • Publication number: 20180347875
    Abstract: An air conditioner includes a compressor, a condenser, an expansion valve, an evaporator, and a temperature detection unit. The temperature detection unit is attached to the condenser and is configured to detect a temperature of the refrigerant in the condenser. The expansion valve is configured to be capable of adjusting a flow rate per unit time of the refrigerant flowing through the expansion valve by adjusting a degree of opening of the expansion valve. The degree of opening of the expansion valve is increased when the temperature of the refrigerant detected by the temperature detection unit rises, and the degree of opening of the expansion valve is decreased when the temperature of the refrigerant detected by the temperature detection unit falls.
    Type: Application
    Filed: December 2, 2015
    Publication date: December 6, 2018
    Inventors: Komei NAKAJIMA, Yusuke TASHIRO, Yasuhide HAYAMARU, Yusuke ADACHI
  • Publication number: 20180328635
    Abstract: An air conditioning apparatus includes a flow path switching valve. An outdoor heat exchanger is divided into a first heat exchanger and a second heat exchanger. During heating operation, a refrigerant is diverted and supplied to the first heat exchanger and the second heat exchanger. During the heating operation, the flow path switching valve combines the flows of the refrigerants discharged from the first heat exchanger and the second heat exchanger, and returns the resultant refrigerant to a refrigerant inlet of a compressor. Three ports of the flow path switching valve are internally communicated with one another while being isolated from an other single port during the heating operation. Two ports of the flow path switching valve are internally communicated with each other and other two ports are internally communicated with each other during defrosting operation of the first heat exchanger or the second heat exchanger.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 15, 2018
    Inventors: Yusuke TASHIRO, Yasuhide HAYAMARU
  • Patent number: 8372172
    Abstract: To improve the separation efficiency of a gas-liquid separator in the gas-liquid separator and an air conditioner, the gas-liquid separator having a vessel with an inlet pipe and an outlet pipe is arranged such that an exit end section of the inlet pipe is formed to be closed or to have a gap, an expanded end section having a width greater than the diameter of that portion of the inlet pipe which crosses a container of the gas-liquid separator is provided, and that a lateral hole is formed in a side face of the expanded end section. Refrigerant vapor and refrigerant liquid are efficiently separated from each other at the expanded end section, and this improves separation efficiency of the gas-liquid separator.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: February 12, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroki Murakami, Hironori Nagai, Tadashi Saito, Hiroaki Makino, Yasuhide Hayamaru, Kazuhide Yamamoto
  • Publication number: 20100199716
    Abstract: To improve the separation efficiency of a gas-liquid separator in the gas-liquid separator and an air conditioner, the gas-liquid separator having a vessel with an inlet pipe and an outlet pipe is arranged such that an exit end section of the inlet pipe is formed to be closed or to have a gap, an expanded end section having a width greater than the diameter of that portion of the inlet pipe which crosses a container of the gas-liquid separator is provided, and that a lateral hole is formed in a side face of the expanded end section. Refrigerant vapor and refrigerant liquid are efficiently separated from each other at the expanded end section, and this improves separation efficiency of the gas-liquid separator.
    Type: Application
    Filed: June 16, 2008
    Publication date: August 12, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroki Murakami, Hironori Nagai, Tadashi Saito, Hiroaki Makino, Yasuhide Hayamaru, Kazuhide Yamamoto