公开(公告)号：US20240142131A1

公开(公告)日：2024-05-02

申请号：US18384084

申请日：2023-10-26

Applicant: LG Electronics Inc.

Inventor： Daehyoung KIM ,  Yongcheol SA ,  Jiyoung Jang ,  Chiwoo Song ,  Jisung Lee

IPC: F24F11/84 ,  F24F1/0035 ,  F24F11/46 ,  F24F11/63

CPC classification number: F24F11/84 ,  F24F1/0035 ,  F24F11/46 ,  F24F11/63 ,  F24F2140/12

Abstract: An air conditioner is provided that may include an outdoor unit provided with a compressor; a plurality of indoor units connected to the outdoor unit, each having an indoor heat exchanger, and each disposed in a different space; a low pressure pipe that connects the indoor heat exchanger and the compressor and in which low pressure gaseous refrigerant flows; a switching device provided with a low pressure valve disposed between the indoor heat exchanger and the low pressure pipe; an indoor temperature sensor that measures a temperature of a space in which an indoor unit of the respective indoor unit is disposed; and a controller that is electrically connected to the indoor temperature sensor and adjusts an opening degree of the low pressure valve. The controller may adjust the opening degree of the low pressure valve based on a difference between a value measured by the indoor temperature sensor and a previously input set temperature. By increasing an evaporation pressure in the indoor unit, noise from the air conditioner may be suppressed or prevented and comfort improved.

公开(公告)号：US11578898B2

公开(公告)日：2023-02-14

申请号：US16808047

申请日：2020-03-03

Applicant: LG Electronics Inc.

Inventor： Ilyoong Shin ,  Yongcheol Sa ,  Chiwoo Song ,  Jisung Lee

IPC: F25B13/00

Abstract: An air conditioning apparatus includes an outdoor unit configured to circulate refrigerant, an indoor unit configured to circulate water, and a heat exchange device that connects the indoor unit to the outdoor unit and that is configured to perform heat exchange between the refrigerant and the water. The heat exchange device includes a first heat exchanger and a second heat exchanger, a first refrigerant pipe and a second refrigerant pipe that are connected to the first heat exchanger, a third refrigerant pipe and a fourth refrigerant pipe that are connected to the second heat exchanger, a first expansion valve disposed at the second refrigerant pipe, a second expansion valve disposed at the fourth refrigerant pipe, a bypass pipe that connects the second refrigerant pipe to the third refrigerant pipe, and a bypass valve disposed at the bypass pipe.

公开(公告)号：US20210278095A1

公开(公告)日：2021-09-09

申请号：US17143328

申请日：2021-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Chiwoo Song ,  Yongcheol Sa ,  Ilyoong Shin ,  Jisung Lee

IPC: F24F3/06 ,  F25B25/00 ,  F25B13/00

Abstract: An air conditioning apparatus is provided that may include an outdoor unit including a compressor and an outdoor heat exchanger and through which a refrigerant is circulated, an indoor unit through which a fluid, such as water is circulated, and at least one heat exchange device including a heat exchanger in which the refrigerant and the fluid are heat-exchanged with each other. The at least one heat exchange device may include a high-pressure guide tube that extends from a high-pressure gas tube of the outdoor unit so as to be connected to a first side of the heat exchanger, a low-pressure guide tube that extends from a low-pressure gas tube of the outdoor unit so as to be combined with the high-pressure guide tube, a liquid guide tube that extends from a liquid tube of the outdoor unit so as to be connected to a second side of the heat exchanger, and a solenoid valve installed in the high-pressure guide tube or the low-pressure guide tube to perform an opening and closing operation so as to allow the refrigerant to flow in a first direction. The high-pressure gas tube and the low-pressure gas tube may be connected to each other by a single gas tube, and when the indoor unit performs a cooling operation or a heating operation, flow of refrigerant in the first direction may be blocked in a state in which power is applied to the solenoid valve.