Patents Examined by Edward F Landrum
  • Patent number: 11156393
    Abstract: An air-conditioning apparatus includes heat-source-side units each including a compressor and a heat-source-side heat exchanger, a load-side heat exchanger and a load-side expansion device, a first header, a second header, bypass expansion devices, circuit switching units, discharge pressure sensors, bypass pressure sensors, and a controller configured to control, in a heat-source-side unit in defrosting mode, the circuit switching unit in such a manner that a portion of refrigerant discharged from the compressor flows into the heat-source-side heat exchanger and configured to control, in the heat-source-side unit in defrosting mode, an opening degree of the bypass expansion device in the heat-source-side unit in such a manner that a value representing a difference between a value obtained by the discharge pressure sensor and a value obtained by the bypass pressure sensor is equal to or greater than a predetermined value.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: October 26, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Tadashi Ariyama
  • Patent number: 11118590
    Abstract: A circulator blower controller for a circulator blower of a heating, ventilation, and air conditioning (HVAC) system of a building includes an interface configured to receive a demand signal with an operating mode from a thermostat. A switching circuit selectively connects power to a tap of a motor of the circulator blower. A data store configured to store a mapping from a speed to the tap. For each tap, a processor observes power consumed by the circulator blower while power is connected to the tap by the switching circuit. The processor determines the mapping by sorting the taps based on observed power consumption. The processor selects a first speed based on the demand signal from the thermostat. The processor identifies a first tap from the mapping based on the first speed and generates the tap selection signal to control the switching circuit to connect power to the first tap.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 14, 2021
    Assignee: Emerson Electric Co.
    Inventors: Jeffrey N. Arensmeier, Paul Layton, Jacob Nielson
  • Patent number: 11112156
    Abstract: A refrigeration apparatus, comprising: a compressor, the compressor being provided with an air exhaust opening and an air return opening; a condenser, a first end of the condenser being connected to the air exhaust opening; an evaporator, a first end of the evaporator being connected to the air return opening, a throttling element being connected in series between a second end of the evaporator and a second end of the condenser; a first control valve, the first control valve being connected in series between the evaporator and the compressor; an air suction device, a gas port of the air suction device being connected between the first control valve and the air return opening; and a control device, the control device being connected to the compressor, the first control valve, and the air suction device.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: September 7, 2021
    Assignees: HEFEI HUALING CO., LTD., HEFEI MIDEA REFRIGERATOR CO., LTD., MIDEA GROUP CO., LTD.
    Inventors: Gaowei Xu, Huawei Zhang, Zengwu Qing, Rui Wang
  • Patent number: 11104208
    Abstract: A method for controlling torque of an air conditioner compressor is disclosed. In one example, the air conditioner compressor is a variable displacement compressor. The method may provide smooth transitions between different air conditioner compressor torques.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: August 31, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: John Eric Rollinger, Jeffrey Allen Doering, Hugh Hamilton, Brent Jacobsen, Steve Pryor Perry
  • Patent number: 11105620
    Abstract: A method for determining a pipe diameter of a liquid-side connection pipe in a refrigeration apparatus includes causing a computer to obtain a heating capacity, maximum heating load, and maximum cooling load; causing the computer to determine a pipe diameter of the liquid-side connection pipe by reducing a reference pipe diameter based on either a value obtained by dividing the maximum heating load by the maximum cooling load or a value obtained by subtracting the maximum heating load from the heating capacity; and installing the refrigeration apparatus using the liquid-side connection pipe having the determined pipe diameter.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: August 31, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro Yamada, Yuusuke Nakagawa, Masahiro Honda
  • Patent number: 11105539
    Abstract: The present disclosure relates to a heating ventilation and air conditioning (HVAC) system. The system includes a primary heat transfer loop configured to be disposed at least partially outside of a building, and the primary heat transfer loop includes a heat exchanger, a compressor configured to compress a refrigerant, where the refrigerant is reactive, a condenser configured to receive and condense the refrigerant, and an expansion device configured to reduce a temperature of the refrigerant. The system further includes a secondary heat transfer loop configured to circulate a two-phase fluid at least partially inside the building, wherein the two-phase fluid is less reactive than the refrigerant.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 31, 2021
    Assignee: Johnson Controls Technology Company
    Inventor: Douglas A. Kester
  • Patent number: 11091005
    Abstract: A method of controlling a ventilation bed having an airflow control apparatus to selectively deliver a required amount of air supplied from an air conditioning system into a region of a pad divided into a plurality of regions, a switch to select at least a portion among the regions of the pad, an airflow control portion to be rotatable and that regulates a total amount of the air discharged therefrom, includes detecting, by pressure detecting sensors, whether a pressure is applied on the regions of the pad or not, when an automatic mode is selected by a switch, determining a relative pressure ratio value of the regions of the pad, by a control portion, when the pressure is applied on the pad, and regulating the amount of the air delivered into the regions by controlling operation of the airflow control portion in accordance with the pressure ratio of the regions.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: August 17, 2021
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventor: SangJun Kim
  • Patent number: 11079129
    Abstract: An air conditioner is disclosed. The air conditioner comprises: an indoor unit having an indoor heat exchanger installed therein; a first outdoor unit having a first outdoor heat exchanger and a first compressor installed therein; a second outdoor unit having a second outdoor heat exchanger and a second compressor installed therein; an auxiliary module which connects the indoor unit, the first outdoor unit, and the second outdoor unit; a first connection line by which the auxiliary module is connected to the first outdoor unit; a second connection line by which the auxiliary module is connected to the second outdoor unit; and a two-stage compression line by which the first outdoor unit is connected to the second outdoor unit.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 3, 2021
    Assignee: LG Electronics Inc.
    Inventors: Daehyoung Kim, Junseong Park, Jaehwa Jung
  • Patent number: 11079147
    Abstract: A method for loading refrigerant fluid into an A/C system from an apparatus for recovering and regenerating refrigerant fluid includes a step of hydraulically connecting the apparatus with the A/C system by a high pressure pipe and a low pressure pipe and a step of loading refrigerant fluid present in a storage container of the apparatus into the A/C system.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: August 3, 2021
    Assignee: SNAP-ON CLIMATE SOLUTIONS S.R.L.
    Inventor: Rahhali Sanhaji
  • Patent number: 11073239
    Abstract: A thermostatic steam trap includes a lower casing; an upper casing secured with the lower casing; and a mechanism that is operatively secured with the lower casing and the upper casing and that includes a stack of bimetallic strips. The stack of bimetallic strips includes two opposed cantilevered portions separated by a neutral flexion axis thereof. A stem member slidably extends through the stack of bimetallic strips and the lower casing, and a valve portion includes a valve member that is operatively secured to a first end of the stem member and that selectively closes the valve portion with movement of the cantilevered portions of the stack of bimetallic strips.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 27, 2021
    Assignee: Velan Inc.
    Inventor: Christian Matthias Wingerath
  • Patent number: 11071305
    Abstract: A cryogenic poultry chilling system including a rotatable carousel having a plurality of stations each configured and arranged to receive a poultry carcass suspended from leg hangers, the poultry carcass having an upward facing cavity opening and a downward facing neck opening, a tundish having an outlet port corresponding to each of the stations, and an injector extending downwardly from each of the tundish outlet ports configured and arranged to deliver cryogen into the cavity opening of a carcass in the corresponding station, and a cryogen delivery apparatus configured to deliver substantially liquid cryogen into the tundish.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: July 27, 2021
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jean-P. Trembley, Nigel Cope
  • Patent number: 11073325
    Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, second elastic members, a base, and first elastic members. The compressor is disposed close to an arrangement centroid of the second elastic members.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: July 27, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
  • Patent number: 11073319
    Abstract: A control system includes processing and memory circuitry, the memory circuitry storing a temperature-based capacity control scheme for a chiller system and the processing circuitry being configured to perform the temperature-based capacity control scheme. The motor temperature-based capacity control scheme is performed as a function of a monitored temperature in a motor configured to drive a compressor of the chiller system, a first temperature threshold corresponding to the monitored temperature, and a second temperature threshold corresponding to the monitored temperature higher than the first temperature threshold.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: July 27, 2021
    Assignee: Johnson Controls Technology Company
    Inventor: Curtis Christian Crane
  • Patent number: 11060771
    Abstract: According to an embodiment of the present disclosure, an air conditioner includes an outdoor heat exchanger disposed in an outdoor unit and an indoor heat exchanger disposed in an indoor unit. The air conditioner also includes a refrigerant pipe configured to connect the outdoor heat exchanger and the indoor heat exchanger. The air conditioner also includes and a refrigerant ratio adjusting device configured adjust a ratio between a liquid refrigerant and a gaseous refrigerant passing through the refrigerant pipe.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 13, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aono Masahiro, Takeichi Hisashi, Isikawa Hideki, Kaneko Takashi, Ogasawara Tetsuya
  • Patent number: 11060767
    Abstract: A method for operating a compressor unit (2) comprising one or more compressors (8, 9, 10) is disclosed, the compressor unit (2) being arranged in a vapour compression system (1). Two or more options for distributing the available compressor capacity of the compressor unit (2) between being connected to a high pressure suction line (11) and to a medium pressure suction line (13) are defined. For each option, an expected impact on one or more operating parameters of the vapour compression system (1), resulting from distributing the available compressor capacity according to the option, is predicted. An option is selected, based on the predicted expected impact for the options, and based on current operating demands of the vapour compression system (1), and the available compressor capacity is distributed according to the selected option, e.g. by means of settings of one or more valve arrangements (14, 15).
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 13, 2021
    Assignee: DANFOSS A/S
    Inventors: Kristian Fredslund, Jan Prins, Kenneth Madsen, Frede Schmidt
  • Patent number: 11054188
    Abstract: An embodiment of the present subject matter includes a heat exchange part having heating medium channels, through which heating medium flows, and combustion gas channels, through which combustion gas burned in a burner flows, adjacently disposed in alternation in the spaces between the plurality of plates, wherein the heat exchange part surrounds the outer sides of a central combustion chamber space, a plurality of the heat exchange parts are provided in a stacked structure, and the flow direction of the heating medium is unidirectional only in a part of the heating medium channels from among the heating medium channels provided in each layer.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: July 6, 2021
    Assignee: KYUNGDONG NAVIEN CO., LTD.
    Inventors: Inchul Jeong, Jun Gil Park
  • Patent number: 11051525
    Abstract: A gas supply device is provided with a heating unit that heats gas flowing into a filter provided in a filter unit.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: July 6, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hirotaka Tagawa, Makoto Ikemiya
  • Patent number: 11052984
    Abstract: A control apparatus for a climate control system of a boat involves at least one processor, non-transitory storage accessible by the processor, and programming which, when executed by the at least one processor will cause the at least one processor to, when a water-fed climate control unit of the boat is operating A) determine a then-current depth at a current location of the boat, B) compare the then-current depth at the current location of the boat relative to a specified minimum acceptable depth, and C) when the then-current depth at the current location of the boat is less than the specified minimum acceptable depth, cause the CCU and water pump to shut off. A corresponding method is also described.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: July 6, 2021
    Assignee: SUMMIT MARINE TECHNOLOGIES, INC.
    Inventor: Mark A. Boettcher
  • Patent number: 11047592
    Abstract: An indoor unit for an air-conditioning apparatus includes a wire attachment part on which a wire is placed, a wire retainer configured to retain the wire placed on the wire attachment part, a wall part provided on one lateral side of the wire attachment part, and having a plurality of opening ports each configured to receive a protrusion part formed at one end of the wire retainer, a plurality of boss parts provided on the other lateral side of the wire attachment part, and having heights different from each other, the wire retainer having the other end to be fastened to any one of the plurality of boss parts, and a fastener configured to fasten the wire retainer to the one of the plurality of boss parts.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: June 29, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Kawai, Masato Ishikawa, Akimoto Suzuki, Masahide Kinami, Hisanori Ikeda
  • Patent number: 11047605
    Abstract: An evaporator includes: a vessel having a refrigerant inlet for receiving a refrigerant at a lower part of the vessel, and a refrigerant outlet for discharging the refrigerant in an evaporated state at an upper part of the vessel; and a plurality of heat-transfer tubes disposed so as to extend inside the vessel along a longitudinal direction of the vessel, and configured to transfer heat received from a fluid flowing inside the heat-transfer tubes to the refrigerant flowing outside the heat-transfer tubes. The plurality of heat-transfer tubes are disposed so that at least one downward flow passage is defined through the plurality of heat-transfer tubes or around the plurality of heat-transfer tubes, the at least one downward flow passage having a width larger than a representative interval between the plurality of heat-transfer tubes.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: June 29, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Yoshiyuki Kondo, Takuo Oda, Yasushi Hasegawa, Naoya Miyoshi