With Flow Control Or Compressor Details Patents (Class 62/324.6)
  • Patent number: 11686506
    Abstract: An object of the present invention is to provide, as a working fluid to be used for a heat cycle system, a working fluid for heat cycle that has cycle performance replaceable with that of R410A, and at the same time, has a small burden on an apparatus, low flammability, suppressed self-decomposition, and less effect on global warming, and therefore, is usable stably even if leaked, a composition for heat cycle system containing the same, and a heat cycle system using the composition. The working fluid for heat cycle contains trifluoroethylene, difluoromethane, and at least one selected from 1,1-difluoroethane, fluoroethane, propane, propylene, carbon dioxide, 2,3,3,3-tetrafluoropropene, and (E)-1,3,3,3-tetrafluoropropene at mass ratios satisfying predetermined expressions and at a ratio of the total content to be 90 to 100 mass % relative to the total amount of the working fluid and has a temperature glide of 10° C. or less.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: June 27, 2023
    Assignee: AGC Inc.
    Inventors: Hikaru Ono, Katsuya Ueno, Tetsuo Otsuka
  • Patent number: 11683001
    Abstract: An over-current protection circuit for a motor capable of selecting one of a plurality of connection states has a plurality of decision circuits, a combining circuit, and a nullifying circuit. The combining circuit combines results of the comparisons in the plurality of decision circuits. The nullifying circuit nullifies part of the comparisons in the plurality of decision circuits. The number of outputs of the over-current protection circuit is one, so that for controlling the driving and stopping of the inverter needs just one terminal is required for receiving the output of the combining circuit. Moreover, because the over-current protection circuit is formed of hardware, the protection can be performed at a high speed.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: June 20, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Iwazaki, Koichi Arisawa, Takashi Yamakawa, Keisuke Uemura, Shinya Toyodome
  • Patent number: 11668504
    Abstract: An air conditioning system includes a storage medium and an air conditioning system, for a three-pipe air conditioning system, the three-pipe air conditioning system includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas-liquid separator, a first pipeline, a second pipeline and a third pipeline; the oil return control method comprises the following steps: controlling the compressor to operate at a first frequency in a refrigerating mode; judging whether the operation duration of the refrigerating mode reaches a first preset time or not; if so, the air conditioning system enters an oil return state, and the compressor, the third pipeline, the second pipeline and the gas-liquid separator are controlled to be communicated in sequence to form a refrigerant circulation loop.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: June 6, 2023
    Assignees: HEFEI MIDEA HEATING AND VENTILATING EQUIPMENT CO., LTD., GD MIDEA HEATING AND VENTILATING EQUIPMENT CO., LTD.
    Inventors: Xinli Wang, Meibing Xiong, Mingkun Feng, Haowei Zhao, Jiajin Liu
  • Patent number: 11486621
    Abstract: Embodiments of the disclosure provide a controller for a compressor and a control method, a compressor assembly, and a refrigeration system, which improve control efficiency and reliability. The controller includes an obtaining module configured to obtain at least one operation state parameter of the compressor, and a controlling module configured to shut off a liquid injection valve if one of the at least one operation state parameter of the compressor meets a protection action condition, wherein the liquid injection valve is configured to regulate flow of fluid injected into the compressor.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 1, 2022
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Zhiwei Shang, Li Yao, He Ma, Guocun Li
  • Patent number: 11466908
    Abstract: A heat exchanger includes heat exchange fins, refrigerant pipes are arranged across the heat exchange fins, and connecting pipes connected to the refrigerant pipes to thereby define refrigerant passages. The connecting pipes include a first pipe portion having a first end connected to one of the refrigerant pipes, a branch pipe portion that is branched from the first pipe portion, that extends parallel to the first pipe portion, and that is connected to another of the refrigerant passages, and a second pipe that is connected to the first pipe portion and that is configured to guide gas-phase refrigerant separated from the refrigerant in the first pipe portion. The second pipe includes an inner insert portion inserted into a second end of the first pipe portion and an outlet portion that extends from the inner insert portion in direction opposite to the second end of the first pipe portion.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: October 11, 2022
    Assignee: LG Electronics Inc.
    Inventors: Eunjun Cho, Pilhyun Yoon, Sungheon Ryu, Kiwoong Park, Jungmin Park, Hyungyul Yum, Yejin Kim
  • Patent number: 11408633
    Abstract: The present disclosure discloses a control method for a multi-split air conditioning system and a multi-split air-conditioning system, the multi-split air conditioning system, including a compressor and a plurality of indoor units respectively arranged on a plurality of parallel branches, the indoor unit including a fan and the control method including: in a cooling mode, when the multi-split air conditioning system needs oil return, the multi-split air conditioning system opening a branch where an indoor unit in an off state is located, determining whether the indoor unit has reached a dewing condition, opening the branch on which the indoor unit is located, and controlling the fan of the indoor unit according to a determination result.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: August 9, 2022
    Assignees: Gree Electric Appliances (Wuhan) Co., Ltd., Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Huachao Jiao, Shiqiang Zhang, Lianfa Wu, Jianguo Xiong, Bing Zhou, Zhiguang Huang, Donghui Li, Bo Qiu
  • Patent number: 11398790
    Abstract: An air conditioner includes a compressor to compress a refrigerant used in a refrigeration cycle, a converter to generate DC voltage, an inverter to generate three-phase AC voltage from the DC voltage, a motor to generate driving force to drive the compressor by using a plurality of coils to which the three-phase AC voltage is applied, a connection switching unit to switch connection states of the plurality of coils, and an outdoor control device to control the connection switching unit. The outdoor control device restricts the switching of the connection states when a switching count of the connection states exceeds a count threshold value.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 26, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Yamakawa, Koichi Arisawa
  • Patent number: 11365914
    Abstract: A refrigeration cycle apparatus includes: an outdoor unit; a branch unit connected to the outdoor unit via a first pipe and a second pipe; a first indoor unit connected to the branch unit via a third pipe and a fourth pipe; and a second indoor unit connected to the branch unit via a fifth pipe and a sixth pipe. A refrigerant circuit includes a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, and a six-way valve. The six-way valve switches between a first state in which the first heat exchanger acts as a condenser and at least the second heat exchanger acts as an evaporator and a second state in which the first heat exchanger acts as an evaporator and at least the second heat exchanger acts as a condenser.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: June 21, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Chitose Tanaka
  • Patent number: 11255573
    Abstract: A system and method of controlling a multiple condenser air conditioning system that provides for efficient regulation of air temperature. The refrigeration system includes one or more valves whose operation is preferably controlled by programmable control logic to regulate flow through the refrigerant condenser(s) and sequentially control compressor discharge pressure and temperature in response to demands for heating or reheating of a supply air flow.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 22, 2022
    Assignee: Desert Aire Corp.
    Inventors: Craig Michael Burg, Harold Mark Sindelar
  • Patent number: 11186141
    Abstract: A vehicle-mounted temperature controller used in a vehicle having a motor, a battery, and a PCU is provided with a low temperature circuit and a refrigeration circuit. The low temperature circuit has a battery heat exchanger, a PCU heat exchanger, a radiator, and a chiller, and the cooling water circulates through them. The refrigeration circuit has a condenser and the chiller absorbing heat from the cooling water to the refrigerant, and the refrigerant circulates through them. The low temperature circuit is configured to be able to switch connection states between a first state where the battery heat exchanger and the chiller are connected, the PCU heat exchanger and the radiator are connected, and the battery heat exchanger and the chiller are not connected to the PCU heat exchanger and the radiator, and a second state where the chiller, the PCU heat exchanger, and the radiator are connected.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: November 30, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Miyoshi
  • Patent number: 11187239
    Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: November 30, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahide Tadokoro, Takuya Teramoto, Katsuyuki Yamamoto, Hiroya Ito, Yuki Ugajin, Shingo Hamada, Takashi Ikeda, Takafumi Abe
  • Patent number: 11101763
    Abstract: An air conditioner includes a signal receiving unit to receive an operation instruction signal, a compressor including a motor including coils, an inverter connected to the coils, a connection switching unit to switch a connection state of the coils between a first connection state and a second connection state, and a controller to control the inverter and the connection switching unit. When the signal receiving unit receives an operation stop signal, the connection switching unit switches the connection state of the coils from the first connection state to the second connection state.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: August 24, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiro Nigo
  • Patent number: 11005410
    Abstract: An over-current protection circuit for a motor capable of selecting one of a plurality of connection states has a plurality of decision circuits, a combining circuit, and a nullifying circuit. The combining circuit combines results of the comparisons in the plurality of decision circuits. The nullifying circuit nullifies part of the comparisons in the plurality of decision circuits. The number of outputs of the over-current protection circuit is one, so that for controlling the driving and stopping of the inverter needs just one terminal is required for receiving the output of the combining circuit. Moreover, because the over-current protection circuit is formed of hardware, the protection can be performed at a high speed.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Iwazaki, Koichi Arisawa, Takashi Yamakawa, Keisuke Uemura, Shinya Toyodome
  • Patent number: 10951139
    Abstract: A driving device includes a connection switching unit that switches connection condition of a coil between Y connection and delta connection, an inverter, and a control device that controls a carrier frequency of the inverter. The carrier frequency is set at a first carrier frequency when the connection condition of the coil is the Y connection. The carrier frequency is set at a second carrier frequency when the connection condition of the coil is the delta connection.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 16, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Hirosawa, Masahiro Nigo
  • Patent number: 10935287
    Abstract: The present disclosure relates to a heat pump system. The heat pump system removes heat generated during the generation of electric energy using a power generator and also performs heating using waste heat. Since an additional heat source is created in order to meet a heating requirement, heating control is effectively achieved, and electric power is produced so as to meet the demand of electric energy. When the power generator is likely to be over-cooled in the cold season, cooling of the power generator is stably performed by controlling the temperature and the flow rate of a cooling medium moving to the power generator.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: March 2, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Hoon Choi
  • Patent number: 10921023
    Abstract: Provided is a system for air-conditioning and hot-water supply configured to selectively perform cooling and heating operations, comprising: an outdoor unit having a compressor and an outdoor heat exchanger; at least one or more indoor units each of which is connected to the outdoor unit and includes an indoor heat exchanger; a hot-water supply unit connected to the outdoor unit so as to be arranged in parallel to the indoor unit and including a refrigerant-water heat exchanger; a controller configured to monitor for a request for hot-water supply from the hot-water supply unit while a cooling operation is being performed in at least one of the indoor units, and then to start the heating operation in accordance with the request; wherein the controller transmits to all of the indoor units, which are turned on for said cooling operation, a fan-stop command to stop a fan arranged at each indoor unit.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: February 16, 2021
    Assignees: DAIKIN INDUSTRIES, LTD., DAIKIN EUROPE N.V.
    Inventors: Hideo Chikami, Tim Coessens
  • Patent number: 10907865
    Abstract: A heating and cooling system includes a heat exchange section to transfer heat between refrigerant and air in both a heating mode and a cooling mode. The heat exchange section includes at least two refrigerant passes. Refrigerant is circuited through the refrigerant passes in the same direction in both the heating mode and the cooling mode, so that the overall flow orientation between the refrigerant passes and the air is a counter-flow orientation in both the heating mode and the cooling mode.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 2, 2021
    Assignee: MODINE MANUFACTURING COMPANY
    Inventors: George Baker, Gregory Kohler, Jacob Pachniak, Mark Johnson
  • Patent number: 10899195
    Abstract: A refrigeration cycle device includes a high-pressure side heat exchanger, a low-pressure side heat exchanger, a temperature-adjustment target device to be temperature-adjusted with a high-pressure side refrigerant, an exterior heat exchanger exchanging heat between the high-pressure side refrigerant or a low-pressure side refrigerant and outside air, a switching portion configured to switch between a heat dissipation mode in which the high-pressure side refrigerant dissipates heat into the outside air in the exterior heat exchanger and a heat absorption mode in which the low-pressure side refrigerant absorbs heat from the outside air in the exterior heat exchanger, a cooling request operation portion, and a controller configured to control an operation of the switching portion to perform the heat absorption mode when the cooling request operation portion operates to request cooling of the air and the temperature-adjustment target device needs to be warmed up.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 26, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Nobuyuki Hashimura, Ariel Marasigan
  • Patent number: 10895389
    Abstract: An air-conditioning apparatus includes a refrigerant circuit in which a compressor, a first heat exchanger, an expansion unit, a second heat exchanger, and a first cooling unit having a refrigerant path are connected to each other by a pipe and through which refrigerant flows, a controller configured to control operation of the compressor and having a heat-generating element, a heat transfer element having a proximal end connected to the heat-generating element and a distal end connected to the first cooling unit, and conveying heat generated by the heat-generating element, and a second cooling unit connected between the proximal end and the distal end of the heat transfer element and cooling the heat transfer element, and the first cooling unit cools the heat transfer element using the refrigerant.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: January 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Abe, Jun Someya
  • Patent number: 10843528
    Abstract: A heat pump air-conditioning system includes a HVAC assembly, a compressor, an outdoor heat exchanger, and a first plate heat exchanger. The HVAC assembly includes an indoor condenser, an indoor evaporator, and an damper mechanism. The compressor communicates to the indoor condenser. The indoor condenser communicates to the outdoor heat exchanger and further to the outdoor heat exchanger through a first enthalpy-increased branch. The outdoor heat exchanger communicates to the indoor evaporator and further to a moderate-pressure air inlet of the compressor through a second enthalpy-increased branch. The indoor evaporator communicates to a low-pressure air inlet of the compressor. The first enthalpy-increased branch and the second enthalpy-increased branch exchange heat by using the first plate heat exchanger. The second enthalpy-increased branch is provided with a first expansion valve. The outdoor heat exchanger is in communication with the first plate heat exchanger through the first expansion valve.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: November 24, 2020
    Assignee: BYD COMPANY LIMITED
    Inventors: Tingshuai Tan, Meijiao Ye, Xuefeng Chen
  • Patent number: 10845099
    Abstract: A refrigeration cycle apparatus includes a heat exchanger, and a flow switching circuit configured to switch the heat exchanger to act as any one of an evaporator and a condenser, the flow switching circuit is configured to allow refrigerant to flow into the heat exchanger in the same direction both in a case where the heat exchanger acts as an evaporator and in a case where the heat exchanger acts as a condenser, the heat exchanger includes a path switching circuit including a plurality of paths, and the path switching circuit is configured to switch an order of the plurality of paths through which refrigerant flows between an order of the plurality of paths in the case where the heat exchanger acts as an evaporator and another order of the plurality of paths in the case where the heat exchanger acts as a condenser.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: November 24, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takumi Nishiyama, Kosuke Tanaka
  • Patent number: 10840567
    Abstract: A storage battery cooling control device includes a system power calculator (18) configured to calculate power of an external power source as power information, and a charge/discharge control unit (20) configured to perform charge/discharge control of a storage battery based on the power information, and to perform power control of a cooling device by distributing power to the cooling device within a cooling power threshold, which is determined so that a heat generation increment of the storage battery is equal to or less than a heat exhaust increment of the cooling device calculated from a cooling air flow rate.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahito Ida, Keisuke Ogasawara
  • Patent number: 10830502
    Abstract: An air conditioner performs a heating operation and a cooling operation with enhanced heat exchange performance and also performs a heating continuous operation, while preventing increases in manufacturing cost and packaging volume. An air conditioner comprises a refrigerant circuit through which refrigerant circulates. A second heat exchanger includes a first refrigerant flow path and a second refrigerant flow path. A first port of the flow path switching device is connected to a discharge portion of a compressor. A second port is connected to a first heat exchanger. A third port is connected to an intake portion of the compressor. A fourth port is connected to a pipe that connects a branch point to the first refrigerant flow path. A fifth port is connected to the second refrigerant flow path. A sixth port is connected to the first refrigerant flow path.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: November 10, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryota Akaiwa, Shinya Higashiiue
  • Patent number: 10763773
    Abstract: A driving device drives a motor having coils. The driving device includes a converter to generate a bus voltage, an inverter to convert the bus voltage to an AC voltage and supply the AC voltage to the coils, and a connection switching unit to switch a connection state of the coils. The bus voltage generated by the converter is switched in accordance with the connection state of the coils.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: September 1, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiro Nigo
  • Patent number: 10712055
    Abstract: Disclosed herein is an air conditioner. The air conditioner includes an outdoor unit having a compressor, an outdoor heat exchanger, and a flowpath switching valve disposed on a refrigerant flowpath between the compressor and the outdoor heat exchanger, a plurality of indoor units configured to operate in a cooling mode or in a heating mode, a mode controller configured to selectively guide refrigerant received from the outdoor unit to the plurality of indoor units. The mode controller guiding the refrigerant through one or more of: a first refrigerant pipe extending from the flowpath switching valve to the mode control unit, a second refrigerant pipe extending from the flowpath switching valve and diverging to the outdoor heat exchanger, and to the mode control unit, and a third refrigerant pipe extending from the outdoor heat exchanger to the mode controller.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung-Rock Kim, Joon-Ho Yoon, Kwon Jin Kim, Dong-Gyu Lee, Eom Ji Jang, Dong Sik Jin, Seung Kwan Choi, Heung Seob Choi
  • Patent number: 10583711
    Abstract: A vehicular temperature regulation device includes a refrigeration cycle, a high-temperature cycle, and a low-temperature cycle. The refrigeration cycle includes a heating heat exchanger configured to heat the heat medium in the high-temperature cycle by exchanging heat between the refrigerant and the heat medium, and a cooling heat exchanger configured to cool the heat medium in the low-temperature cycle by exchanging heat between the refrigerant and the heat medium. The vehicular temperature regulation device includes a connection portion that connects the high-temperature cycle and the low-temperature cycle, a regulation portion configured to regulate a flow of the heat medium, and a controller. After the controller stops the compressor, or after the controller receives a stop command of stopping the compressor, the controller controls the regulation portion, a first pump, and a second pump to exchange the heat medium between the high-temperature cycle and the low-temperature cycle.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: March 10, 2020
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Kishita, Keigo Satou, Yasumitsu Omi, Kouji Takahashi
  • Patent number: 10525787
    Abstract: Electric vehicle thermal management systems and electric vehicles using the thermal management system, are disclosed. A passenger cabin is heated by the heat dissipated from a battery and/or a motor. A cooling circuit in the management system fluidly connects the battery, the motor and a first radiator in series. The first radiator provides a heat source to the passenger cabin by means of the heat dissipated from the battery and/or the electric motor. Under certain conditions, the electric motor is selectively separated from the cooling circuit, so that when the passenger cabin needs to be heated, the thermal management system can provide heat to the passenger cabin without affecting the heat dissipation of the battery.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 7, 2020
    Assignee: Thunder Power New Energy Vehicle Development Company Limited
    Inventor: Ming-Chieh Cheng
  • Patent number: 10520235
    Abstract: A system based on temperature and/or pressure switches connected to a fan controller. An HVAC circuit includes at least one condenser coil with a plurality of tubes, one or more stages coupled to one or more compressors, at least one temperature sensor, at least one fan configured to provide airflow across the plurality of tubes, and a controller. Instead of cycling the fan off and on, fans associated with the condenser are kept running at a low speed.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 31, 2019
    Assignee: Lennox Industries Inc.
    Inventors: David Mackey, Aylan Him, Zer Kai Yap
  • Patent number: 10495091
    Abstract: A compressor includes: an annular cylinder; a rotation shaft which is rotated by the motor; a piston which revolves along an inner circumferential surface of the cylinder, and forms a cylinder chamber on the inside of the cylinder; a vane which protrudes to the inside of the cylinder chamber from a vane groove provided in the cylinder, and divides the cylinder chamber into an inlet chamber and a compression chamber by abutting against the piston; and an injection hole which injects a liquid refrigerant to the inside of the compression chamber. The center of the injection hole is disposed to be within a fan-like range of which a center angle is equal to or less than 40° toward a side opposite to a connection position between the compressor housing and the inlet unit from a center line of the vane groove in the circumferential direction of the rotation shaft.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: December 3, 2019
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Kenshi Ueda, Akira Inoue, Naoya Morozumi, Yasuyuki Izumi
  • Patent number: 10486496
    Abstract: A method of controlling an air conditioning system for a vehicle is provided. The method includes detecting a cooling mode while the vehicle is being driven and comparing a vent discharge temperature of air with a cooling target temperature set by a user. When the vent discharge temperature is greater than the cooling target temperature the compressor RPM is determined and air is introduced into the vehicle without passing through the interior heat exchanger and the electric heater. When the vent discharge temperature is less than the cooling target temperature, the compressor RPM is determined and a door in the system is opened to guide the air through the interior heat exchanger to heat the air is heated and then the vent discharge temperature is compared with the cooling target temperature again, and the electric heater is operated.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: November 26, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Wan Je Cho, Jae Yeon Kim, Kwon Hyoung Choi, Tae Han Kim, Ho Gyu Choi, Su Yeon Kang, Yeon Ho Kim, Myunghwan Kim, Yong Hyun Choi
  • Patent number: 10443869
    Abstract: Operation switching units, each changing directions of a refrigerant flowing through its associated indoor unit in response to a switch from a cooling operation to a heating operation, or vice versa, are each connected with the associated indoor unit through indoor communication pipes; a gas-liquid separation unit is connected with an outdoor unit through outdoor communication pipes; and the operation switching units are connected with the gas-liquid separation unit through two intermediate communication pipes preinstalled and one intermediate communication pipe newly installed. This provides a simple and cost-effective means for upgrading a preinstalled air conditioner making a switch from cooling to heating, and vice versa, into an air conditioner that can perform a cooling operation and a heating operation in parallel with each other.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: October 15, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Satoshi Kawano, Shinya Matsuoka, Masahiro Oka, Mari Susaki
  • Patent number: 10406888
    Abstract: An electric vehicle thermal management system and an electric vehicle using the thermal management system, wherein a passenger cabin is heated by the heat dissipated from a battery and/or a motor, and the battery and the electric motor are connected in different cooling paths. Heat is supplied to the passenger cabin by using the heat absorbed by cooling liquid from the battery and/or the motor, so that the electric power of the electric vehicle can be effectively utilized to increase the endurance mileage of the electric vehicle.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 10, 2019
    Assignee: Thunder Power New Energy Vehicle Development Company Limited
    Inventor: Ming-Chieh Cheng
  • Patent number: 10411275
    Abstract: Provided is a fuel cell cooling system including: a heat exchange unit including a radiator dissipating heat contained in a coolant and an evaporator disposed to exchange heat with the radiator and evaporating water using the heat from the radiator to humidify outside air; and an air compressor compressing the outside air passing through the evaporator and supplying the compressed air to a fuel cell stack.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 10, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Hyuck Roul Kwon
  • Patent number: 10386081
    Abstract: A heat exchanger includes a refrigerant flow path into which a gas refrigerant flows from two gas-side inlets in the second row, that are positioned off from each other. Refrigerant flow paths from the two gas-side inlets converge in the one end portion. The refrigerant flow path connects to a heat-transfer pipe in the first row from the second row. The refrigerant flow path includes a refrigerant flow path which is formed in a range from the same stage as one of the gas-side inlets of the second row to the same stage as the other of the gas-side inlets of the second row, while being arranged along both ways between the one end portion and the other end portion in the first row, and the refrigerant flow path extends to a liquid-side outlet.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: August 20, 2019
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Atsuhiko Yokozeki, Hiroaki Tsuboe, Yoshiharu Tsukada, Yuki Arai
  • Patent number: 10260785
    Abstract: An outdoor unit for a heat recovery VRF air conditioning system and a heat recovery VRF air conditioning system are provided. The outdoor unit comprises: a compressor, having an exhaust port and a gas return port; a reversing assembly, having a first valve port, a second valve port, a third valve port and a fourth valve port; an outdoor heat exchanger, having a first end connected to the first valve port, and a second end connected to the second connector; a plurality of one-way valves, wherein each one-way valve has a circulation end and a stop end, and each one-way valve is opened only in one direction from the circulation end to the stop end; a throttling element; and a gas-liquid separator.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: April 16, 2019
    Assignees: GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., MIDEA GROUP CO., LTD.
    Inventors: Guozhong Yang, Yueming Li
  • Patent number: 10222103
    Abstract: A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: March 5, 2019
    Assignee: Efficient Energy GmbH
    Inventors: Holger Sedlak, Oliver Kniffler
  • Patent number: 10082323
    Abstract: An air conditioner of the present invention includes: an outdoor unit having an outdoor heat exchanger and a compressor installed therein; a plurality of indoor units connected to the outdoor unit and having an indoor heat exchanger installed therein; a four-way valve provided on a discharge part side of the compressor; a refrigerant tube having first to third refrigerant tubes and connecting the four-way valve and the indoor heat exchanger, in which the first refrigerant tube is branched from between the four-way valve and the outdoor heat exchanger such that some of a refrigerant discharged from the compressor is fed into the indoor heat exchanger while bypassing the outdoor heat exchanger, the second refrigerant tube is connected to the four-way valve to feed all of the refrigerant discharged from the compressor into the indoor heat exchanger, and the third refrigerant tube is connected to the second refrigerant tube in parallel; and a heat pump valve provided at the third refrigerant tube to selectively c
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: September 25, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Seok Bae, Hyung Mo Koo, Jin Young Ahn, Hyun Jin Yoon, Il Yong Cho, Young Jun Choi
  • Patent number: 10076944
    Abstract: A vehicle includes a cooling arrangement that includes an air conditioning loop and a battery cooling loop connected together by a common chiller and arranged to cool each of cabin air and a battery. A coolant three-way proportional control valve is connected to the chiller and the battery. The control valve is configured to operatively control a capacity of the chiller for the battery.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 18, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Ali Jalilevand, Manfred Koberstein, Michael Steven Wallis
  • Patent number: 10018387
    Abstract: A reversing valve comprising a valve body having an internal cavity therein and an input port, output port and first and second reversing ports. A baffle is located within the internal cavity and is configured to rotate around a pivot point within the internal cavity. At least one electromagnet is coupled to the valve body. The electromagnet is configured to cause the baffle to rotate in one of the clockwise direction or counter-clock wise direction when a voltage is applied to the electromagnet.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 10, 2018
    Assignee: Lennox Industries, Inc.
    Inventors: Eric Giles, Chris McHugh
  • Patent number: 9803894
    Abstract: A dual-stage enthalpy-increasing air-conditioning system comprises a compressor (1), an outdoor heat exchanger (3), a first throttle component (8) and an indoor heat exchanger (11), wherein the components are connected via pipelines; the system also comprises a flash evaporator (6) and a second throttle component (7); a first connecting port of the flash evaporator (6) is connected with a first connecting port of the first throttle component (8); a second connecting port of the first throttle component (8) is connected with the indoor heat exchanger (11); a second connecting port of the flash evaporator (6) is connected with an air supplementing port of the compressor (1); a third connecting port of the flash evaporator (6) is connected with a first connecting port of the second throttle component (7); a second connecting port of the second throttle component (7) is connected with the outdoor heat exchanger (3).
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: October 31, 2017
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Jinhuang Lin, Shaolin Chen, Haiyuan Jin, Zhenjian He, Lv Liu, Yunhui Zou, Chunyu Cheng
  • Patent number: 9777950
    Abstract: A cycle enhancement apparatus is provided. The apparatus has a first side entrance line and exit line, both connected to a first side of a refrigerant line, and a second side entrance line and exit line, both connected to a second side of the refrigerant line. One-way valves prevent flow through the first side entrance line toward the first side, through the first side exit line away from the first side, through the second side entrance line toward the second side, and through the second side exit line away from the second side. The apparatus has a cycle enhancement line. The cycle enhancement line has an entrance portion, connected to the first side entrance line and the second side entrance line, an exit portion, connected to the first side exit line and the second side exit line, and a cycle enhancement between the entrance portion and the exit portion.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: October 3, 2017
    Assignee: Lennox Industries Inc.
    Inventor: Robert B. Uselton
  • Patent number: 9683760
    Abstract: An outdoor unit of an air-conditioner and two-pipe and three-pipe air-conditioning systems having the same are provided. The outdoor unit includes a compressor defining an outlet and an inlet; a first four-way valve defining a first valve communicated with the outlet, second and third ports communicated with the inlet; a second four-way valve defining second and third ports communicated with the inlet; an outdoor heat exchanger defining a first refrigerant valve Communicated with the fourth port of the first four-way valve; a first gas pipe defining a first end connected with the second and third ports of the first and second four-way valves and, the inlet; a second gas pipe defining a first end connected with the fourth port of the second four-way valve; a third gas pipe defining a first end connected with the outlet and a second end connected with the first port of the second four-way valve.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: June 20, 2017
    Assignee: GD Midea Heating & Ventilating Equip. Co., Ltd.
    Inventors: Xianjin Sun, Meibing Xiong, Xihua Ma, Zhengxing Wang
  • Patent number: 9528395
    Abstract: A heat recovery system for an internal combustion engine may include a heat exchanger, through which a fluid heat-transfer medium flows, for transferring heat from an exhaust gas system to the heat-transfer medium. A heat engine, through which the heat-transfer medium flows, may be included for converting the heat transferred to the heat-transfer medium into mechanical output work. A cyclically closed line system may be included for connecting the heat exchanger to the heat engine. The system may include a positive displacement pump for conveying the heat-transfer medium through the line system in a predefined flow direction via mechanical drive work. The system may include a drive, which is hermetically sealed off from the heat-transfer medium, for feeding the drive work to the positive displacement pump, and an output, which is hermetically sealed off from the heat-transfer medium, for discharging the output work from the heat engine.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: December 27, 2016
    Assignee: Mahle International GmbH
    Inventors: Alfred Elsaesser, Christian Maisch, Rolf Mueller, Peter Wieske
  • Patent number: 9488400
    Abstract: The present invention provides a control system for managing lubricant levels in tandem compressor assemblies of a heating, ventilation, and air conditioning (HVAC) system. In transitioning from a partial load that operates a first compressor but not a second compressor of a tandem assembly to a full load that operates both the first and the second compressor, a controller of the HVAC system turns OFF both compressors of the tandem compressor assembly to allow time for lubricant levels to equalize between the first and the second compressor.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 8, 2016
    Assignee: Lennox Industries Inc.
    Inventors: Aylan Him, Der-Kai Hung, David Mackey, Lin Hong
  • Patent number: 9285142
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit of a refrigeration cycle through which a refrigerant that transits in a supercritical state is allowed to flow, and a flow dividing device that divides the flow of a high-pressure liquid refrigerant in a subcritical state into two or more parts. The flow dividing device is configured such that the device is oriented substantially in the horizontal direction or upward in the vertical direction relative to the direction of flow of the refrigerant in a liquid state. With such a configuration, the flow of refrigerating machine oil is equally divided, thus offering high energy saving while keeping heat-medium conveyance power at a low level without reducing the heat exchanging performance.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 15, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Takeshi Hatomura
  • Patent number: 9273689
    Abstract: A valve arrangement is configured to rectify a volumetric flow supplied by a hydraulic pump to a first pump connection or second pump connection. The valve arrangement includes a first suction valve arranged between a suction-side connection of the valve arrangement and the first pump connection. The valve arrangement also includes a second suction valve arranged between the suction-side connection and the second pump connection. The valve arrangement also includes a first pressure valve arranged between a pumping-side connection of the valve arrangement and the second pump connection. The valve arrangement also includes a second pressure valve arranged between the pump-side connection and the first pump connection. The first suction valve is acted on by the pressure of the second pump connection in the opening direction. The second suction valve is acted on by the pressure of the first pump connection in the opening direction.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 1, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Sebastian Birk
  • Patent number: 9234673
    Abstract: An air handling unit has a blower configured to selectively move air from an air inlet of the air handling unit to an air outlet of the air handling unit along an airflow direction extending from the blower to the air outlet, a heat exchanger disposed within the air handling unit between the inlet and the outlet, the heat exchanger has a thermal conductor, an evaporator tube thermally conductively joined to the thermal conductor, and a subcooler tube thermally conductively joined to the thermal conductor. An expansion device provides fluid communication between the evaporator tube and the subcooler tube and a drain pan disposed within the air handling unit upstream relative to the at least one subcooler tube and positioned in a geometrical footprint of at least a portion of the drain pan as the drain pan is viewed from an upstream position in the airflow direction.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: January 12, 2016
    Assignee: Trane International Inc.
    Inventors: Jonathan David Douglas, Kevin B. Mercer, Benton A. Harris, Jr., Stephen S. Hancock
  • Patent number: 9180754
    Abstract: A heat pump system including a water-cooled type heat exchanger, which is a heat supply means, mounted on a first bypass line bypassing a second indoor heat exchanger to collect waste heat of vehicle electric devices to thereby enhance a heating efficiency of the heat pump system.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: November 10, 2015
    Assignee: Halla Visteon Climate Control Corporation
    Inventors: Yoonho Wang, Sungho Kang, Jeonghun Seo, Younwoo Lim, Hakkyu Kim
  • Patent number: 9180753
    Abstract: The present invention makes it possible to integrate and control in one circuit the systems, such as electric power components, a driving motor, a stack, and an AC condenser which have the maximum enthalpy under similar operational temperature and use conditions, by using an integrated radiator. Therefore, it is possible to minimize air-through resistance of the radiator for cooling the stack and the electric power components and ensure smooth and stable cooling performance of the stack, electric power components, and AC condenser while improving fuel efficiency by reducing the condensation pressure of the air conditioner. Further, it is possible to improve cooling efficiency by non-repeatedly arranging heat exchangers, and reduce the weight of a vehicle, volume of the parts, and the manufacturing cost, by avoiding using too many parts, such as a radiator, a water pump, and a reservoir tank.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 10, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jaeyeon Kim, Manhee Park
  • Publication number: 20150135756
    Abstract: A multi-room air-conditioning apparatus includes an outdoor unit, a relay unit connected to an outdoor unit by first and second connection pipes, and a plurality of indoor units connected to the relay unit. The outdoor unit includes a second gas-liquid separating device provided on the suction side of the compressor. The suction side of the compressor and the second gas-liquid separating device are connected to each other by a gas-side outlet pipe and a liquid-side outlet pipe.
    Type: Application
    Filed: May 14, 2012
    Publication date: May 21, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mizuo Sakai, Soshi Ikeda, Hiroaki Nakamune, Susumu Yoshimura, Naofumi Takenaka, Hiroki Okazawa, Keisuke Hokazono, Osamu Morimoto