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公开(公告)号：US11649971B2
公开(公告)日：2023-05-16
申请号：US16660181
申请日：2019-10-22
Applicant: LG Electronics Inc.
Inventor： Minsoo Kim , Jihyeong Ryu , Youngmin Lee , Eunjun Cho
CPC classification number: F24D17/0036 , F24D19/1054 , F24H1/205 , F24H4/04 , F24H8/00
Abstract: A heat pump boiler is disclosed. The heat pump boiler includes a compressor. The heat pump boiler further includes an exterior heat exchanger that is configured to transfer heat between refrigerant and exterior air. The heat pump boiler further includes an interior heat exchanger that is configured to transfer heat between refrigerant and water. The heat pump boiler further includes a channel change valve that is configured to provide refrigerant compressed by the compressor to the exterior heat exchanger or the interior heat exchanger. The heat pump boiler further includes a first boiler heat exchanger that is configured to heat water that has passed through the interior heat exchanger from heat generated through combustion. The heat pump boiler further includes a second boiler heat exchanger that is configured to transfer heat between refrigerant and gas discharged from the first boiler heat exchanger.
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公开(公告)号：US11624532B2
公开(公告)日：2023-04-11
申请号：US17184059
申请日：2021-02-24
Applicant: LG ELECTRONICS INC.
Inventor： Jihyeong Ryu , Eunjun Cho , Minsoo Kim , Youngmin Lee , Hojin Seo
Abstract: A heat pump may include a compressor configured to compress a refrigerant, a first temperature sensor configured to detect an outdoor temperature, a second temperature sensor provided in heating pipes connected to a heating device that performs indoor heating and configured to detect a temperature of fluid flowing through the heating pipes, an outdoor heat exchanger configured to perform heat exchange between outdoor air and a refrigerant, a third temperature sensor configured to detect a temperature of the outdoor heat exchanger, and a controller. The controller may be configured to: control power to a boiler and/or to the compressor based on sensing values of the first, second, and third temperature sensors, calculate an expected efficiency of the heat pump based on the sensing value of the first temperature sensor and an initial target temperature, and control power to the boiler based on the expected efficiency.
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公开(公告)号：US11441793B2
公开(公告)日：2022-09-13
申请号：US16678510
申请日：2019-11-08
Applicant: LG Electronics Inc.
Inventor： Eunjun Cho , Kiwoong Park , Hyungyul Yum , Pilhyun Yoon
IPC: F24F1/16 , F24F11/81 , F24F1/0068 , F24F1/0003 , F24F1/08 , F24F1/14 , F25B41/20
Abstract: Provided is an air conditioner capable of improving heating performance in a cold region by reducing a refrigerant pressure loss in an outdoor heat exchanger in a heating operation. The air conditioner includes a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger. The outdoor heat exchanger may include a plurality of unit channels into which a refrigerant channel is partitioned, and a separating device installed in each of the plurality of unit channels and configured to separate a liquid refrigerant component and a vapor refrigerant component in each of the plurality of unit channels in a heating operation. The air conditioner may further include a compressor suction channel connecting a heating-operation outlet of the outdoor heat exchanger and an inlet of the compressor, and a bypass pipe connecting the separating device and the compressor suction channel.
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公开(公告)号：US20220011029A1
公开(公告)日：2022-01-13
申请号：US17370114
申请日：2021-07-08
Applicant: LG ELECTRONICS INC.
Inventor： Eunjun Cho , Jungmin Park , Pilhyun Yoon , Seongho Hong , Yejin Kim
Abstract: An air conditioner is provided that may include a compressor that compresses a refrigerant; a condenser that condenses the refrigerant discharged from the compressor; at least one expansion valve that expands the refrigerant passing through the condenser; a gas-liquid separator, through which the refrigerant passed through the at least one expansion valve flows, that separates and discharges the refrigerant into gas refrigerant and liquid refrigerant; an evaporator that evaporates the liquid refrigerant discharged from the gas-liquid separator; a refrigerant inflow pipe that connects the expansion valve and the gas-liquid separator; a bypass pipe that connects the gas-liquid separator and the compressor; and a refrigerant discharge pipe that connects the gas-liquid separator and the evaporator. The gas-liquid separator may include a housing in which a portion of each of the refrigerant inflow pipe, the bypass pipe, and the refrigerant discharge pipe may be disposed; a first partition wall, which is disposed in an internal space of the housing and includes a first opening formed by cutting out a portion of an outer surface thereof disposed adjacent to the refrigerant inflow pipe, and a second partition wall, which is spaced apart from the first partition wall and disposed in the internal space of the housing and includes a second opening formed by cutting out a portion of an outer surface thereof disposed adjacent to the refrigerant discharge pipe.
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公开(公告)号：US10161656B2
公开(公告)日：2018-12-25
申请号：US14688246
申请日：2015-04-16
Applicant: LG ELECTRONICS INC.
Inventor： Eunjun Cho , Beomsoo Seo , Kiwoong Park
Abstract: An air conditioner includes a heat exchanger including a plurality of refrigerant tubes, a distributor disposed on one side of the heat exchanger to divide a refrigerant so that the refrigerant flows into a plurality of flow paths, a plurality of capillary tubes extending from the distributor toward the plurality of refrigerant tubes, a guide tube guiding an introduction of the refrigerant into the distributor, an inlet tube connected to an inlet-side of the distributor, and a bending part disposed between the guide tube and the inlet tube to switch a flow direction of the refrigerant. The inlet tube extends in a horizontal direction or an inclined direction to guide a liquid refrigerant of a two-phase liquid refrigerant so that the liquid refrigerant flows into a lower portion of the inlet tube.
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Patent Agency Ranking
公开(公告)号：US12123606B2
公开(公告)日：2024-10-22
申请号：US17801956
申请日：2021-02-24
Applicant: LG ELECTRONICS INC.
Inventor： Seongho Hong , Eunjun Cho , Hojin Seo
IPC: F24F11/36
CPC classification number: F24F11/36
Abstract: A heat pump including a housing configured to be disposed outdoors; a compressor that compresses a refrigerant; a fluid refrigerant heat exchanger configured to perform heat exchange between the refrigerant and a fluid; an outdoor heat exchanger configured to perform heat exchange between the refrigerant and outdoor air; a pressure sensor configured to detect a pressure of the refrigerant flowing between the compressor and the fluid refrigerant heat exchanger; a first shut-off valve disposed in a pipe connected to a discharge of the compressor; a second shut-off valve disposed between the outdoor heat exchanger and the compressor; and a controller configured to: determine whether the refrigerant leaks, control the first shut-off valve to be closed, when the refrigerant leaks, and control the second shutoff valve to be closed, when the pressure sensed by the pressure sensor is less than a predetermined reference pressure.
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公开(公告)号：US20240068686A1
公开(公告)日：2024-02-29
申请号：US18112612
申请日：2023-02-22
Applicant: LG ELECTRONICS INC.
Inventor： Ilyoong SHIN , Chiwoo Song , Ahrae Jo , Eunjun Cho
CPC classification number: F24F11/43 , F24F1/0068 , F24F5/0035 , F24F11/64 , F24F11/84 , F24F13/30 , F24F1/005
Abstract: An air conditioner may include a case through which outdoor air flows into an indoor space is formed; a first heat exchanger that exchanges heat between the air and refrigerant; a second heat exchanger disposed downstream of the first heat exchanger, through which the refrigerant selectively flows, and that exchanges heat between the air and the refrigerant; a liquid pipe connected to each of the first and second heat exchangers; a high-pressure gas pipe connected to each of the first and second heat exchangers; a low-pressure gas pipe through which the gaseous refrigerant discharged from the first and second heat exchangers flows; a high-pressure gas pipe valve; a low-pressure gas pipe valve; an expansion valve installed in the liquid pipe; and a controller configured to control an opening degree of the low-pressure gas pipe valve, based on a temperature of the refrigerant flowing through the first heat exchanger.
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公开(公告)号：US11680740B2
公开(公告)日：2023-06-20
申请号：US17067042
申请日：2020-10-09
Applicant: LG Electronics Inc.
Inventor： Eungsu Kim , Eunjun Cho , Sungheon Ryu , Jusang Kim
CPC classification number: F25B49/02 , F25B39/00 , F25B40/02 , F25B41/22 , F25B41/40 , F25B2400/0409 , F25B2400/23 , F25B2600/2515 , F25B2700/13 , F25B2700/2106 , F25B2700/2115 , F25B2700/2116
Abstract: Provided is a gas-liquid separator, including a connection pipe connected to a refrigerant pipe in the evaporator, the refrigerant pipe in which a two-phase refrigerant flows, a header connected to the connection pipe, wherein a gas refrigerant separated from the two-phase refrigerant flows inside the header, a bypass pipe connected to the header to guide a flow of the gas refrigerant to a compressor, a flow rate control valve installed at the bypass pipe, and a controller configured to control opening and closing of the flow rate control valve based on whether a preset condition is satisfied.
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公开(公告)号：US11668501B2
公开(公告)日：2023-06-06
申请号：US17336510
申请日：2021-06-02
Applicant: LG ELECTRONICS INC.
Inventor： Eunjun Cho , Pilhyun Yoon , Seongho Hong , Jungmin Park , Yejin Kim
CPC classification number: F25B43/00 , F25B39/00 , F25B41/31 , F25B41/40 , F25B2400/23
Abstract: An air conditioner may include a compressor that compresses a refrigerant; a condenser that condenses the refrigerant discharged from the compressor; at least one expansion valve that expands the refrigerant passed through the condenser; at least one gas-liquid separation pipe through which the refrigerant passed through the at least one expansion valve flows; a gas-liquid separator, into which the refrigerant passed through the at least one gas-liquid separation pipe is introduced, that separates and discharges the refrigerant introduced into the gas-liquid separator into gas refrigerant and liquid refrigerant; and an evaporator that evaporates the liquid refrigerant discharged from the gas-liquid separator. The gas refrigerant discharged from the gas-liquid separator and the refrigerant passed through the evaporator may be provided to the compressor.
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公开(公告)号：US11530848B2
公开(公告)日：2022-12-20
申请号：US17067080
申请日：2020-10-09
Applicant: LG Electronics Inc.
Inventor： Jungmin Park , Eunjun Cho
Abstract: Provided is an air conditioner including a connection pipe connected to a refrigerant pipe disposed inside an outdoor heat exchanger that operates as a condenser during a cooling operation and as an evaporator during a heating operation, a header connected to the connection pipe, wherein a refrigerant separated from a two-phase refrigerant flowing through the refrigerant pipe flows through the header, a bypass pipe connected to the header to guide a flow of the refrigerant to a compressor, a flow rate control valve installed at the bypass pipe to control a flow velocity of the refrigerant, a subcooler configured to superheat the refrigerant flowing through the bypass pipe, and a controller configured to control an opening degree of the flow rate control valve.
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