Patents Assigned to MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
  • Publication number: 20240125515
    Abstract: The purpose of the present invention is to provide a control device, a heat source system, a control method, and a control program with which a heat medium at a required temperature can be more effectively sent out. This control device, which is applied to a heat source system 1 comprising a plurality of heat source machines (2a), (2b) connected in series, comprises a setting unit which sets the outlet setting temperatures of cool water in the respective heat source machines (2a), (2b) on the basis of: a measured value of a cool water flow rate, measured values of inlet temperatures of the cool water in the respective heat source machines (2a), (2b); and the required outlet temperature of the cool water in the heat source system (1).
    Type: Application
    Filed: November 25, 2021
    Publication date: April 18, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Shunsuke ISONO, Yutaka TAKENAKA, Satoshi NIKAIDO, Katsuya SAKAGUCHI, Linri CUI
  • Publication number: 20240125527
    Abstract: Provided is a air purge device that can effectively discharge air.
    Type: Application
    Filed: February 18, 2022
    Publication date: April 18, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Nobuki OKA, Ryo KAMITO, Yoshiaki ITO, Taichi YOSHII, Tatsuo ISHIGURO, Yoshie TOGANO, Norihisa HORAGUCHI, Masahiko NAGAI, Naoya MIYOSHI
  • Publication number: 20240117801
    Abstract: The purpose of the present invention is to improve insulating properties. This terminal unit (30) comprises: a plate-shaped base unit (40); a plate-shaped insulation unit (51) and a fitting insulation unit (52) that cover the plate surface of the base unit; a terminal (70) that extends in the Z axis direction, which is the direction intersecting the plate surface of the base unit (40), and penetrates the base unit (40) and the plate-shaped insulation unit (51); and an upper cylinder insulation unit (53) that extends along the Z axis direction from the plate-shaped insulation unit (51) and covers the side surface of the terminal (70). The plate-shaped insulation unit (51) and the upper cylinder insulation unit (53) are formed integrally.
    Type: Application
    Filed: January 19, 2022
    Publication date: April 11, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Ichiro YOGO, Kosuke UEDA
  • Publication number: 20240102465
    Abstract: Provided is a method for continuing the operation of an electric compressor even if the magnitude of ripple voltage exceeds a predetermined threshold value. A control device of an electric compressor is provided with: a detection unit for detecting the ripple voltage of the electric compressor which is driven by a battery; a determination unit for determining whether or not the value of the ripple voltage is greater than or equal to a predetermined threshold value; and a control unit for reducing the rotation speed of a motor of the electric compressor down to a predetermined first target rotation speed greater than 0 when the value is greater than or equal to the threshold value.
    Type: Application
    Filed: October 19, 2020
    Publication date: March 28, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto HATTORI, Toyohisa KAWASHIMA, Kyohei WATANABE
  • Patent number: 11940164
    Abstract: The purpose of the present invention is to provide a vehicle air conditioning system and a control method of the vehicle air conditioning system which enable detecting leaks of flammable refrigerant without requiring a separate sensor.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD
    Inventors: Takayuki Hagita, Nobuya Nakagawa, Hideto Noyama
  • Patent number: 11939977
    Abstract: A scroll compressor comprising a fixed scroll (15); an orbiting scroll (16) supported in a manner allowing for orbiting motion; a discharge port through which a fluid compressed by the two scrolls (15, 16) is discharged; an end plate step portion (16E) provided on an end plate of the orbiting scroll (16) formed so that a height of the end plate is higher on a center portion side in the direction of a spiral wrap and lower on an outer end side; and a wrap step portion (15E) provided on a wall portion of the fixed scroll (15) that corresponds to the end plate step portion (16E) so that a height of the wall portion is lower on the center portion side of the spiral and higher on the outer end side; wherein the orbiting scroll (16) is treated for surface hardening and the fixed scroll (15) is not treated for surface hardening.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hajime Sato, Makoto Takeuchi, Genta Yoshikawa, Kazuhide Watanabe, Katsuhiro Fujita, Takayuki Hagita, Takayuki Kuwahara
  • Publication number: 20240088818
    Abstract: Provided is a method for determining the generation source of ripple voltage when abnormal ripple voltage is detected. The control device is for an electric compressor, the control device comprising: a detection unit that detects ripple voltage; a judgment unit that judges whether the ripple voltage is abnormal based on the value of the ripple voltage; and a cause determination unit that determines whether the cause of the abnormality is the electric compressor or some other external device, based on the control result of the electric compressor.
    Type: Application
    Filed: October 20, 2020
    Publication date: March 14, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto HATTORI, Toyohisa KAWASHIMA, Kyohei WATANABE
  • Publication number: 20240079985
    Abstract: Provided is a method for detecting a ripple voltage. A control device is provided with: an acquiring unit which acquires the voltage value of an input voltage of a battery-driven electric compressor at irregular intervals; and a waveform computing unit which computes the waveform of a ripple component of the input voltage on the basis of the acquired voltage value.
    Type: Application
    Filed: October 20, 2020
    Publication date: March 7, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto HATTORI, Toyohisa KAWASHIMA, Kyohei WATANABE
  • Publication number: 20240068472
    Abstract: The purpose of the present invention is to suppress noise caused by contact between a depression and a ring. Provided is an electric compressor comprising: a housing that forms an outer shell; a fixed scroll that is housed in the housing and fixed on the housing side; a turning scroll that meshes with the fixed scroll and turns with respect to the fixed scroll; an autorotation inhibiting mechanism (30) that inhibits autorotation of the turning scroll; and a lubricant supply unit that supplies a lubricant to the autorotation inhibiting mechanism (30). The autorotation inhibiting mechanism (30) has: a ring hole (32) which is formed in the turning scroll; a ring (33) which is disposed in the ring hole (32), and the outer circumferential surface (33b) of which faces the inner circumferential surface 32a of the ring hole (32); and a pin (34) which is provided to the housing and which engages with the inner circumferential surface (33a) of the ring (33).
    Type: Application
    Filed: January 17, 2022
    Publication date: February 29, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Takayuki KUWAHARA, Akinori YOSHIOKA, Goshi IKETAKA, Makoto TAKEUCHI
  • Publication number: 20240066957
    Abstract: This light illumination unit comprises: a heat sink that has a plate-shaped heat sink body and fins protruding from a first main surface of the heat sink body; an electronic substrate that is laminated on a second main surface of the heat sink body on the reverse side thereof from the first main surface; and a light illumination element that is mounted on a first surface of the electronic substrate on the side thereof where the heat sink is provided. As a result of said configuration, it is possible to save space as well as power.
    Type: Application
    Filed: January 12, 2022
    Publication date: February 29, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Noriyuki CHIKAGAWA, Takahide YAMAMOTO, Isami YONEDA
  • Publication number: 20240035719
    Abstract: This refrigeration machine comprises a compressor that compresses a refrigerant, a condenser that condenses the refrigerant which has been compressed by the compressor, an expander that expands the refrigerant which has been condensed by the condenser, a liquid film type evaporator that evaporates the refrigerant which has been expanded by the expander, and an eductor that generates flow speed difference and pressure difference in the refrigerant which has been expanded by the expander and suctions refrigerant stored in the evaporator.
    Type: Application
    Filed: November 16, 2021
    Publication date: February 1, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Taichi YOSHII, Tatsuo ISHIGURO, Yoshie TOGANO, Naoya MIYOSHI, Wenping WU
  • Patent number: 11867432
    Abstract: A geothermal heat utilization system includes a first well having a first upper opening and a first lower opening, and a second well having a second upper opening and a second lower opening. The geothermal heat utilization system further includes a first pipe, a second pipe, a first heat exchanger, and a second heat exchanger. The geothermal heat utilization system is capable of supplying underground water of an upper aquifer from the first upper opening to the second upper opening via the first pipe, and the geothermal heat utilization system is capable of supplying underground water of a lower aquifer from the second lower opening to the first lower opening via the second pipe.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: January 9, 2024
    Assignees: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Rinnichi Sai, Masanobu Sakai, Toru Yamaguchi, Masaki Nakao, Yasuhisa Nakaso
  • Patent number: 11859871
    Abstract: The geothermal heat utilization system is capable of supplying underground water of an upper aquifer from the first upper opening to the second upper opening via the first pipe, and capable of supplying underground water of a lower aquifer from the second lower opening to the first lower opening via the second pipe. Further, the geothermal heat utilization system is configured to pump hot water and at the same time, pump cold water.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: January 2, 2024
    Assignees: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Rinnichi Sai, Masanobu Sakai, Toru Yamaguchi, Masaki Nakao, Yasuhisa Nakaso
  • Publication number: 20230415547
    Abstract: A vehicle air conditioning system includes a refrigerant circuit that circulates a refrigerant through a compressor, a heat-absorbing heat exchanger, a decompression unit, and a heat-dissipating heat exchanger, a heat medium circuit including a high-temperature heat medium circuit that circulates a high-temperature heat medium and a low-temperature heat medium circuit that circulates a low-temperature heat medium, a vehicle interior heat exchanger that exchanges heat between air and at least one of the high-temperature heat medium and the low-temperature heat medium, a vehicle exterior heat exchanger that exchanges heat between air and at least one of the high-temperature heat medium and the low-temperature heat medium, and a switching unit that switches respective flows of the high-temperature heat medium and the low-temperature heat medium in accordance with an operation mode of the vehicle air conditioning system.
    Type: Application
    Filed: November 10, 2021
    Publication date: December 28, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hirotaka Tanabe, Takayuki Kobayashi, Yasutaka Aoki, Tomoki Hase, Hideaki Tatenoi
  • Publication number: 20230391162
    Abstract: A casing unit includes a first casing, and a second casing configured to be combined with the first casing from a first direction. The first casing includes a first casing main body and a protrusion. The second casing includes a second casing main body provided with an accommodating groove into which the protrusion is to be accommodated. Any one of the protrusion and the second casing main body is provided with a guiding part that relatively moves the first casing and the second casing in a second direction, in response to combining the first casing and the second casing. The second casing further includes an overlapping part that overlaps with the first casing main body in the first direction in a combined state, and that is elastically deformable in response to relative movement of the first casing and the second casing in the second direction.
    Type: Application
    Filed: November 25, 2021
    Publication date: December 7, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventor: Hideyuki TAKEZAWA
  • Publication number: 20230364966
    Abstract: This heat exchanger is equipped with: a first heat exchange unit having a first inlet/outlet unit which has one inlet/outlet port and through which a coolant flows, and also having a plurality of first heat transfer pipes, each of which has one end thereof connected to the first inlet/outlet unit; a header pipe which is connected to the other ends of the plurality of first heat transfer pipes; and a second heat exchange unit having a second inlet/outlet unit which has two or more inlet/outlet ports and through which a coolant flows, and also having a plurality of second heat transfer pipes, each of which has one end thereof connected to the header pipe and the other end thereof connected to the second inlet/outlet unit. The coolant flows from the first heat exchange unit side toward the second heat exchange unit side during heating and flows from the second heat exchange unit side toward the first heat exchange unit side during cooling.
    Type: Application
    Filed: September 29, 2021
    Publication date: November 16, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Koji NAKADO, Nobuya NAKAGAWA, Hideaki TATENOI
  • Publication number: 20230358234
    Abstract: This scroll compressor comprises: a shaft that is capable of rotating about an axis; a motor that rotatably drives the shaft; a compressor body that is driven by the rotation of the shaft; a housing that covers the motor and the compressor body and that has a bottom surface facing the motor from the axial direction; an intake port that guides a refrigerant into the housing; and heat-dissipating fins that are formed on the bottom surface, that extend in the direction in which the refrigerant flows, and that are divided in the flow direction.
    Type: Application
    Filed: October 15, 2021
    Publication date: November 9, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Masayuki SAKAI, Tatsuo ISHIGURO, Hitoshi TAMAKI, Hajime SATO, Hirofumi HIRATA, Makoto TAKEUCHI, Takuma KONDO
  • Publication number: 20230347710
    Abstract: This air conditioning device for a vehicle comprises: a refrigeration cycle having a compressor, a condenser, an expansion valve, and an evaporator through which refrigerant sequentially flows; a high-temperature heat medium circuit in which a high-temperature heat medium that has been heat-exchanged with the refrigerant in the condenser circulates; a low-temperature heat medium circuit in which a low-temperature heat medium that has been heat-exchanged with the refrigerant in the evaporator circulates; a connection line for connecting the high-temperature heat medium circuit and the low-temperature heat medium circuit; a plurality of heat exchangers outside the vehicle that allow introduction of the heat medium; and a switching unit capable of switching modes for each of the plurality of heat exchangers outside the vehicle, among a mode for connecting to the high-temperature heat medium circuit, a mode for connecting to the low-temperature heat medium circuit, and a mode for not connecting to either of the h
    Type: Application
    Filed: February 1, 2021
    Publication date: November 2, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Takayuki KOBAYASHI, Hirotaka TANABE, Tomoki HASE, Masahiro OHTA, Hideaki TATENOI, Koji NAKADO
  • Patent number: 11774146
    Abstract: Provided are a turbo compressor and a centrifugal chiller comprising the same with which the length of a shaft in an axial direction can be shortened, rotational shake accompanying rotation of the shaft is suppressed, and a device can be made small.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: October 3, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Yasushi Hasegawa, Kenji Ueda, Shintaro Omura
  • Publication number: 20230259111
    Abstract: The purpose of the present invention is to provide an abnormality detection system and refrigerator, an abnormality detection method, and an abnormality detection program which can improve the accuracy of abnormality detection. The abnormality detection system comprises: an acquisition unit which acquires driving data of a refrigerator (11); a creation unit which creates a model capable of estimating a prescribed driving state of the refrigerator (11) on the basis of the driving data, when the driving data is non-trained data; a determination unit which compares an estimation value of the driving state, the estimation value being estimated by the model, with an actual measurement value corresponding to the driving state, and determines whether the driving data is an outlier; and an abnormality detection unit which performs, on the basis of the model, abnormality detection on the refrigerator (11), when the driving data is not determined to be the outlier.
    Type: Application
    Filed: July 12, 2021
    Publication date: August 17, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Yuki NISHIZAKI, Satoshi NIKAIDO, Noriyuki MATSUKURA, Tatsuo ISHIGURO, Katsuaki MORITA, Ryuji IKEDA, Hirotaka OKA, Kenichi NAGAHARA