公开(公告)号：US11988424B2

公开(公告)日：2024-05-21

申请号：US17836133

申请日：2022-06-09

Applicant: LG ELECTRONICS INC.

Inventor： Eunjun Cho ,  Minsoo Kim ,  Hojin Seo ,  Dongkeun Yang

IPC: F25B43/00 ,  F25B41/40

CPC classification number: F25B43/006 ,  F25B41/40 ,  F25B2400/04 ,  F25B2400/23 ,  F25B2500/26 ,  F25B2600/2501

Abstract: A device is provided that may include a compressor configured to compress a refrigerant, a condenser configured to condense the compressed refrigerant, an expander configured to expand the refrigerant condensed by the condenser, an evaporator configured to evaporate the refrigerant expanded by the expander, a separation mechanism connected to an outlet pipe of the evaporator to separate liquid refrigerant and gaseous refrigerant discharged from the evaporator, a bypass pipe to guide the gaseous refrigerant separated from the liquid refrigerant to the compressor, a first pipe connected to the separation mechanism and through which the liquid refrigerant discharged from the separation mechanism flows, an accumulator connected to the first pipe to separate the gaseous refrigerant, which is not separated from the liquid refrigerant by the separation mechanism, from the liquid refrigerant and discharge the separated gaseous refrigerant, and a second pipe configured to guide the gaseous refrigerant discharged from the accumulator to the compressor.

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.

公开(公告)号：US11739993B2

公开(公告)日：2023-08-29

申请号：US17184156

申请日：2021-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jihyeong Ryu ,  Eunjun Cho ,  Minsoo Kim ,  Youngmin Lee ,  Hojin Seo

IPC: F25B49/02 ,  F25B30/02 ,  F24H15/16 ,  F24D19/10

CPC classification number: F25B30/02 ,  F24D19/1006 ,  F24H15/16 ,  F25B49/022 ,  F25B2313/0315 ,  F25B2313/0316 ,  F25B2333/002 ,  F25B2333/003

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, and a controller. Based on a first sensing value of the first temperature sensor, the controller may be configured to control a compressor, control power to a boiler, and/or calculate an expected efficiency of the heat pump. Based on the expected efficiency and/or a second sensing value of a second temperature sensor, the controller may be configured to control power to the boiler.

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

IPC: F25B49/02 ,  F25B30/02 ,  F24D17/02 ,  F24D12/02 ,  F24D19/10

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.