Patents by Inventor Shigeo Takata
Shigeo Takata 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: 20190301753Abstract: An air-conditioning apparatus includes a refrigerant pipe through which refrigerant that flows through the refrigeration cycle passes; a pipe-side plate thermally connected to the refrigerant pipe; a control box thermally connected to the pipe-side plate and containing an electric component including a heating element; a housing of an outdoor unit, the housing containing the pipe-side plate and the control box; a positioning element fixing the pipe-side plate and the control box to each other; and a fastening element fixing the control box and the positioning element to each other. At least one side surface of the housing has a work opening. A front portion of the control box is positioned closer to the work opening in the housing, and a rear portion of the control box is positioned closer to a rear surface of the housing, the rear surface facing the side surface having the work opening.Type: ApplicationFiled: July 22, 2016Publication date: October 3, 2019Inventors: Yoshihiro TANIGUCHI, Shigeo TAKATA, Shinsaku KUSUBE, Daisuke ABE, Tomoki KOBAYASHI
-
Publication number: 20190293306Abstract: A refrigeration cycle apparatus includes a refrigerant circuit through which refrigerant circulates, a control box in which equipment for controlling the refrigeration cycle apparatus is accommodated, and a refrigerator for cooing a heat emitting body exposed from an opening of the control box. The heat emitting body is the equipment accommodated in the control box. The refrigerator includes a cooling body in contact with the heat emitting body, and a refrigerant pipe through which the refrigerant circulating through the refrigerant circuit passes to cool the cooling body. The refrigerant pipe is in contact with the cooling body. The pipe contact surface is different from the heating-body contact surface. The cooling body has a recessed portion at which the cooling body and the heat emitting body are not in contact with each other. The recessed portion is formed in the heating-body contact surface and spaced from the control box.Type: ApplicationFiled: September 16, 2016Publication date: September 26, 2019Inventors: Yoshihiro TANIGUCHI, Shigeo TAKATA, Shinsaku KUSUBE, Takahiko KOBAYASHI, Takanori KOIKE
-
Publication number: 20190154320Abstract: An exhaust heat recovery type of air-conditioning apparatus includes: an air-conditioning-side refrigerant circuit including a first flow switching device, a second flow switching device, and an exhaust-heat recovery heat exchanger connected in parallel to an outdoor heat exchanger and an indoor heat exchanger; and a refrigeration-side refrigerant circuit. The first flow switching device causes the outdoor heat exchanger to communicate with one of a discharge side and a suction side of a first compressor through a pipe. The second flow switching device causes the indoor heat exchanger to communicate with one of the discharge and suction sides of the first compressor through a pipe. The exhaust-heat recovery heat exchanger is connected to the suction side of the first compressor through a pipe, and causes heat exchange between refrigerants. Because of the above configuration, the exhaust heat recovery type of air-conditioning apparatus can use exhaust heat in any of operation modes.Type: ApplicationFiled: April 21, 2016Publication date: May 23, 2019Applicant: Mitsubishi Electric CorporationInventors: Shingo TANINAKA, Shigeo TAKATA, Naofumi TAKENAKA
-
Patent number: 10274910Abstract: An air-conditioning control system, includes: an air-conditioning apparatus constructed by connecting one or a plurality of indoor units and one or a plurality of outdoor units by refrigerant pipes; a general-purpose device controller to which a general-purpose device that operates in cooperation with the air-conditioning apparatus is connected, configured to control the general-purpose device; and an energy management gateway, which is communicably connected to the air-conditioning apparatus and the general-purpose device controller through a transmission line, configured to control a device to be controlled, based on a signal related to communication.Type: GrantFiled: January 25, 2013Date of Patent: April 30, 2019Assignee: Mitsubishi Electric CorporationInventors: Atsuhiro Yabuta, Shigeo Takata
-
Publication number: 20190072944Abstract: In an air-conditioning apparatus and a method of detecting an abnormality in a transmission line, the air-conditioning apparatus includes plural facility apparatuses which are connected to each other by a transmission line and communicate with each other. One of the plural facility apparatuses includes: a transmission circuit including an abnormality detection comparator which detects an abnormality in the transmission line, the transmission circuit being provided to detect the abnormality in the transmission line; and a data storage device which stores a reception signal and signal voltage wave-height information indicating that the abnormality in the transmission line is detected. The transmission circuit further compares a voltage value of a reception signal received from another of the plural facility apparatuses through the transmission line with a threshold value set in advance in the abnormality detection comparator.Type: ApplicationFiled: April 15, 2016Publication date: March 7, 2019Inventors: Tatsuya AOKI, Mario SATO, Jun SOMEYA, Shigeo TAKATA
-
Publication number: 20180306462Abstract: A ventilation device includes an outside air heat exchanger disposed between a total heat exchanger and an outside air port, a return air heat exchanger disposed between the total heat exchanger and a return air port, and a supply air heat exchanger disposed between the total heat exchanger and a supply air port. A compressor, a flow switching device, the outside air heat exchanger, an outside air expansion device, and the return air heat exchanger are sequentially connected by pipes, the supply air heat exchanger and a supply air expansion device which are connected in series by pipes are connected in parallel to the outside air heat exchanger and the outside air expansion device by pipes, thereby forming a refrigerant circuit in which refrigerant is circulated.Type: ApplicationFiled: August 31, 2015Publication date: October 25, 2018Inventors: Kazuhiro ITO, Shigeo TAKATA, Jun SOMEYA, Koji RIKUKAWA
-
Patent number: 10077928Abstract: A setting unit acquires the temperature of an air-conditioned space, calculates the difference between the temperature of the air-conditioned space and a suction temperature as a correction amount ?T, and transmits information of the correction amount ?T to an air-conditioning apparatus. A controller of the air-conditioning apparatus controls the operation of the air-conditioning apparatus so that a control temperature obtained by adding the correction amount ?T to the suction temperature becomes equal to a set temperature.Type: GrantFiled: June 21, 2012Date of Patent: September 18, 2018Assignee: Mitsubishi Electric CorporationInventors: Atsuhiro Yabuta, Shigeo Takata
-
Patent number: 10006653Abstract: An air conditioning system includes air conditioning facilities with an indoor unit and an outdoor unit, a dedicated transmission line, a general-purpose equipment controller, and an energy management gateway. The energy management gateway includes a dedicated transmission line that enables communication with the air conditioning facilities via the dedicated transmission line, a management controller that collects management information preregistered for managing the air conditioning facilities from among various information received via the dedicated transmission line, and a processing controller that executes computational processing related to management of the air conditioning facilities on the basis of the collected management information, and controls the air conditioning facilities.Type: GrantFiled: January 25, 2013Date of Patent: June 26, 2018Assignee: Mitsubishi Electric CorporationInventors: Atsuhiro Yabuta, Shigeo Takata
-
Publication number: 20180013368Abstract: A motor drive apparatus includes a power converter including an inverter having an upper arm and a lower arm, the inverter being configured to control an operation of an electric motor, and a drive controller configured to apply a dead time for preventing a short circuit between the upper arm and the lower arm, and to control the power converter. The drive controller is configured to control the power converter by switching a first mode in which a first correction value representing a time used to correct a voltage drop due to the dead time is employed to control the power converter, and a second mode in which a second correction value smaller than the first correction value is employed to control the power converter.Type: ApplicationFiled: April 13, 2015Publication date: January 11, 2018Inventors: Shusaku NAKASE, Shigeo TAKATA
-
Patent number: 9816743Abstract: An electric motor drive device including a drive controller configured to control an operation of an inverter, the drive controller including a frequency setting unit configured to set an operating frequency of an electric motor, a frequency determining unit configured to determine whether or not the operating frequency set in the frequency setting unit is equal to or lower than a set frequency threshold value, a voltage determining unit configured to determine whether or not a value of a DC voltage is equal to or larger than a set voltage threshold value, and an inverter controller configured to control the inverter based on the operating frequency set in the frequency setting unit.Type: GrantFiled: August 22, 2014Date of Patent: November 14, 2017Assignee: Mitsubishi Electric CorporationInventors: Shusaku Nakase, Shigeo Takata
-
Publication number: 20170138654Abstract: An electric motor drive device including a drive controller configured to control an operation of an inverter, the drive controller including a frequency setting unit configured to set an operating frequency of an electric motor, a frequency determining unit configured to determine whether or not the operating frequency set in the frequency setting unit is equal to or lower than a set frequency threshold value, a voltage determining unit configured to determine whether or not a value of a DC voltage is equal to or larger than a set voltage threshold value, and an inverter controller configured to control the inverter based on the operating frequency set in the frequency setting unit.Type: ApplicationFiled: August 22, 2014Publication date: May 18, 2017Inventors: Shusaku NAKASE, Shigeo TAKATA
-
Patent number: 9285128Abstract: An air-conditioning apparatus includes refrigerating cycle systems each connecting a compressor for compressing a refrigerant, a refrigerant flow path switching device, a heat source side heat exchanger for exchanging heat for the refrigerant, an expansion device for adjusting the pressure of the refrigerant, and heat exchangers related to heat medium which exchanges heat between the refrigerant and heat medium different from the refrigerant, by piping so as to constitute refrigerant circuits; and heat medium side systems each connecting pumps for circulating the heat medium for the heat exchangers related to heat medium, use side heat exchangers for exchange heat between the heat medium and air of an air-conditioning target space and heat medium flow switching systems for switching the heat medium which passes through each heat exchangers related to heat medium to each use side heat exchanger, by piping so as to constitute a heat medium circulation circuit.Type: GrantFiled: March 16, 2010Date of Patent: March 15, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shigeo Takata, Koji Yamashita
-
Patent number: 9279591Abstract: An air-conditioning apparatus includes a heat medium side device with plural pumps for circulating the heat medium related to the heating or the cooling of plural intermediate heat exchangers. Plural use side heat exchangers exchange heat between the heat medium and air. Plural flow path switching valves switch the flow path for supplying the heat medium related to a selected system among the heating media circulating in plural systems to each use side heat exchanger. A relay unit side control device controls the flow path switching valves so as to circulate the heat medium between the use side heat exchanger causing the heat medium to absorb the heat and the use side heat exchanger causing the heat medium to emit the preferentially set heat, when it is determined that it is impossible to perform the heating or the cooling of the heat medium by the intermediate heat exchanger.Type: GrantFiled: September 18, 2009Date of Patent: March 8, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shigeo Takata, Koji Yamashita
-
Publication number: 20150316281Abstract: An air-conditioning control system, includes: an air-conditioning apparatus constructed by connecting one or a plurality of indoor units and one or a plurality of outdoor units by refrigerant pipes; a general-purpose device controller to which a general-purpose device that operates in cooperation with the air-conditioning apparatus is connected, configured to control the general-purpose device; and an energy management gateway, which is communicably connected to the air-conditioning apparatus and the general-purpose device controller through a transmission line, configured to control a device to be controlled, based on a signal related to communication.Type: ApplicationFiled: January 25, 2013Publication date: November 5, 2015Applicant: Mitsubishi Electric CorporationInventors: Atsuhiro YABUTA, Shigeo TAKATA
-
Publication number: 20150308702Abstract: An air conditioning system includes air conditioning facilities with an indoor unit and an outdoor unit, a dedicated transmission line, a general-purpose equipment controller, and an energy management gateway. The energy management gateway includes a dedicated transmission line that enables communication with the air conditioning facilities via the dedicated transmission line, a management controller that collects management information preregistered for managing the air conditioning facilities from among various information received via the dedicated transmission line, and a processing controller that executes computational processing related to management of the air conditioning facilities on the basis of the collected management information, and controls the air conditioning facilities.Type: ApplicationFiled: January 25, 2013Publication date: October 29, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Atsuhiro YABUTA, Shigeo TAKATA
-
Patent number: 9121624Abstract: An information transfer system for a refrigeration air-conditioning apparatus in which one or more heat-source units for the refrigerating/air conditioning apparatus, one first relay unit, and one or more second relay units are connected by refrigerant piping, and the second relay units and one or more indoor units are connected by water piping, wherein communications are performed discretely between a pair of the heat-source unit and the first relay unit, a pair of the first relay unit and the second relay units, and a pair of the second relay units and the indoor units through transmission lines respectively.Type: GrantFiled: March 26, 2009Date of Patent: September 1, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenji Matsui, Shigeo Takata
-
Patent number: 9054588Abstract: A three-phase AC to DC converter includes a three-phase AC power supply, a three-phase rectifier bridge circuit that is connected to the three-phase AC power supply and includes rectifying devices which are connected in a bridge configuration, a three-phase full-bridge circuit that includes two serially-connected switching devices for each of three phases, the two serially-connected switching devices being connected at an output side of the three-phase rectifier bridge circuit, and includes reverse blocking diodes which are connected in parallel to the respective switching devices, a reactor that connects the three-phase full-bridge circuit to the three-phase AC power supply, a smoothing capacitor connected to an output side of the three-phase full-bridge circuit, DC voltage detection means that detects an output voltage, power supply phase detection means that detects a power supply phase of the three-phase AC power supply, and pulse width modulator that outputs PWM signals which control the switching deviceType: GrantFiled: October 13, 2010Date of Patent: June 9, 2015Assignee: Mitsubishi Electric CorporationInventors: Masaki Takata, Shigeo Takata
-
Publication number: 20150153059Abstract: An air-conditioning system includes: an air-conditioning apparatus including one or a plurality of indoor units and one or a plurality of outdoor units connected by a refrigerant pipe; and a general controller connected to the outdoor units and the indoor units via a transmission line and connecting input/output general devices related to air-conditioning. The general controller includes: setting means which performs a process for setting, for each output signal, a condition related to an input signal and a determination value defined within a predetermined range for the condition; setting storage means which stores data related to the setting of the setting means; and determination means which performs a process of performing determination as to control on the basis of the data stored in the setting storage means and the condition included in each input signal and a determination value corresponding to the condition, and sending an output signal based on the determination.Type: ApplicationFiled: September 14, 2012Publication date: June 4, 2015Applicant: Mitsubishi Electric CorporationInventors: Atsuhiro Yabuta, Shigeo Takata
-
Patent number: 8943849Abstract: An air-conditioning apparatus is provided with a heat-source device that supplies a refrigerant, a relay unit that exchanges heat of a heat medium such as water or anti-freezing fluid supplied from the heat-source device in an intermediate heat exchanger and supplies the heat medium, an indoor unit that exchanges heat between a use side heat exchanger through which the heat medium supplied from the relay unit flows and indoor air and performs cooling or heating in the indoor space, a controller that controls operations of the heat-source device, the relay unit and the indoor unit, and a third temperature sensor that detects the temperature of the heat medium flowing through the use side heat exchanger, and if an abnormality in at least one of the heat-source device and the relay unit is detected, the controller continues the operation of the indoor unit while the temperature detected by the third temperature sensor remains within a first predetermined temperature range.Type: GrantFiled: March 23, 2009Date of Patent: February 3, 2015Assignee: Mitsubishi Electric CorporationInventors: Shigeo Takata, Kouji Yamashita
-
Publication number: 20150013365Abstract: A setting unit acquires the temperature of an air-conditioned space, calculates the difference between the temperature of the air-conditioned space and a suction temperature as a correction amount ?T, and transmits information of the correction amount ?T to an air-conditioning apparatus. A controller of the air-conditioning apparatus controls the operation of the air-conditioning apparatus so that a control temperature obtained by adding the correction amount ?T to the suction temperature becomes equal to a set temperature.Type: ApplicationFiled: June 21, 2012Publication date: January 15, 2015Applicant: Mitsubishi Electric CorporationInventors: Atsuhiro Yabuta, Shigeo Takata