公开(公告)号：US20210364169A1

公开(公告)日：2021-11-25

申请号：US16963300

申请日：2019-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Eunjun CHO ,  Minsoo KIM ,  Hyungyul YUM ,  Jiyoung JANG

IPC: F24F3/06 ,  F25B5/02 ,  F25B6/02 ,  F25B41/31 ,  F24F3/14

Abstract: Provided is a multi-type air conditioner, including: an outdoor unit comprising a liquid pipe through which liquid refrigerant flows and a gas pipe through which gas refrigerant flows; a plurality of indoor units comprising a first indoor unit and a second indoor unit each connected to the liquid and gas pipelines to circulate a refrigerant; a gas pipe connecting tube connecting the gas pipe and a plurality of indoor units so that a gas refrigerant flows therethrough; a first gas branch pipe connecting the first indoor unit and the gas pipe connecting tube so that a gas refrigerant flows therethrough; a second gas branch pipe connecting the second indoor unit and the gas pipe connecting tube so that a gas refrigerant flows therethrough; an indoor heat exchanger connecting pipe connecting the first indoor unit and the second indoor unit so that a liquid refrigerant flows therethrough; and a liquid pipe connecting tube connecting the first indoor unit and the liquid pipe so that a liquid refrigerant flows therethrough.
The first indoor unit may include: a first heat exchanger configured to perform heat exchange between indoor air and a refrigerant, a second heat exchanger configured to perform heat exchange between indoor air and a refrigerant and arranged in a stacked fashion with the first heat exchanger; a first indoor fan configured to blow air to the first heat exchanger and the second heat exchanger; a first liquid branch pipe connecting the indoor heat exchanger connecting pipe and the first indoor heat exchanger; a first heat exchanger connecting pipe connecting the first liquid branch pipe and the first heat exchanger of the first indoor heat exchanger; a second heat exchanger connecting pipe connecting the first liquid branch pipe and a second heat exchanger of the first indoor heat exchanger; and a first indoor expansion valve disposed at the second heat exchanger connecting pipe, wherein an opening amount of the first indoor expansion valve is adjusted in response to an input signal from the controller to selectively expand a flowing refrigerant.
The liquid pipe connecting tube may connect the first heat exchanger and a liquid pipe, and the first gas branch pipe may connect the second heat exchanger and the gas pipe.
Since the multi-type air conditioner according to the present disclosure can operate the first heat exchanger as a condenser and the second heat exchanger as an evaporator among the indoor heat exchangers, it is possible to continuously drive the dehumidification mode while maintaining the room temperature within a certain range There are advantages.

公开(公告)号：US20210254880A1

公开(公告)日：2021-08-19

申请号：US17177452

申请日：2021-02-17

Applicant: LG ELECTRONICS INC

Inventor： Hyungyul YUM ,  Eunjun CHO ,  Pilhyun YOON

IPC: F25D21/00 ,  F25B13/00 ,  F25B41/42

Abstract: An air conditioner is provided that may include a defrosting bypass valve disposed at a defrosting bypass pipe having a first end connected to a middle point of the outdoor heat exchanger and a second end connected to an inlet pipe of a compressor, and a processor configured to open and close the defrosting bypass valve according to a temperature of a refrigerant in an outdoor heat exchanger. At a beginning of a defrosting operation, the processor may open the defrosting bypass valve to bypass a portion of the refrigerant in the outdoor heat exchanger to the inlet pipe of the compressor, and if the temperature of the refrigerant in the outdoor heat exchanger exceeds a predetermined temperature, the processor may close the defrosting bypass valve, thereby achieving defrosting performance at an early stage of the defrosting operation.

公开(公告)号：US20210123646A1

公开(公告)日：2021-04-29

申请号：US17067042

申请日：2020-10-09

Applicant: LG Electronics Inc.

Inventor： Eungsu KIM ,  Eunjun CHO ,  Sungheon RYU ,  Jusang KIM

IPC: F25B49/02 ,  F25B41/00 ,  F25B41/04 ,  F25B39/00 ,  F25B40/02

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.

公开(公告)号：US20160047580A1

公开(公告)日：2016-02-18

申请号：US14688246

申请日：2015-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Eunjun CHO ,  Beomsoo SEO ,  Kiwoong PARK

IPC: F25B41/00

CPC classification number: F25B21/02 ,  F24F1/14 ,  F28F9/026 ,  F28F9/027 ,  F28F9/0275

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.

Abstract translation: 一种空气调节机，包括：多个制冷剂管的热交换器;分配器，设置在热交换器的一侧，以分配制冷剂，使制冷剂流入多个流路;多个毛细管，从分配器向着 多个制冷剂管，引导制冷剂引入分配器的引导管，连接到分配器的入口侧的入口管和设置在引导管和入口管之间的弯曲部分，以切换流动方向 的制冷剂。 入口管沿水平方向或倾斜方向延伸以引导两相液体制冷剂的液体制冷剂，使得液体制冷剂流入入口管的下部。