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公开(公告)号：US20220090832A1
公开(公告)日：2022-03-24
申请号：US17474346
申请日：2021-09-14
Applicant: LG Electronics Inc.
Inventor： Chiwoo SONG , Yongcheol SA , Jiyoung JANG
Abstract: The present disclosure provides a multi-air conditioner for heating/cooling operation, including: at least one indoor unit which is installed in a room, and comprises an indoor heat exchanger; an outdoor unit which is connected to the indoor unit through a refrigerant pipe, and comprises an outdoor heat exchanger, a compressor, an outdoor expansion valve, and a four-way valve; at least one leakage blocking valve which is formed on the refrigerant pipe, and blocks a refrigerant flow in the refrigerant pipe when a refrigerant leak occurs from the refrigerant pipe in the room; and a buffer unit which is installed on the refrigerant pipe between the indoor unit and the outdoor unit, and collects refrigerant leaking from the refrigerant pipe. Accordingly, when the refrigerant leaks into the room, it is possible to minimize the amount of the leaking refrigerant by collecting the refrigerant in the buffer tank.
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公开(公告)号：US20210131695A1
公开(公告)日：2021-05-06
申请号：US16962929
申请日：2019-01-18
Applicant: LG ELECTRONICS INC.
Inventor： Eunjun CHO , Yongcheol SA , Jiyoung JANG
Abstract: Provided is a multi-type air conditioner, including: an outdoor unit having a liquid pipe through which a liquid refrigerant flows, and a gas pipe through which a gas refrigerant flows; a plurality of indoor units comprising a first indoor unit and a second indoor unit each connected to the liquid pipe and the gas pipe to circulate a refrigerant; a gas pipe connecting tube connecting the gas pipe and the plurality of indoor units so that a gas refrigerant flows therethrough; and a liquid pipe connecting tube connecting the liquid pipe and the plurality of indoor units so that a liquid refrigerant flows therethrough. The first indoor unit may include: a first indoor heat exchanger comprising a first heat exchanger configured to perform heat exchange between indoor air and a refrigerant, and 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 liquid pipe connecting tube and the first heat exchanger so that a refrigerant flows therethrough; a first gas branch pipe connecting the gas pipe connecting tube and the second heat exchanger so that a refrigerant flows therethrough; a first heat exchanger connecting pipe connected to the first heat exchanger so that a refrigerant flows therethrough; a second heat exchanger connecting pipe connected to the second heat exchanger so that a refrigerant flows therethrough; a return pipe having one side connected to the first gas branch pipe and the other side connected to the first heat exchanger connecting pipe and the second heat exchanger connecting pipe; 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 a controller to selectively expand a flowing refrigerant; and a first expansion valve disposed in the return pipe, wherein an opening amount of the first expansion valve is adjusted in response to an input signal from the controller to selectively expand a flowing refrigerant.
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 constantly operate the dehumidifying mode while maintaining a room temperature within a predetermined range.-
公开(公告)号：US20180259207A1
公开(公告)日：2018-09-13
申请号：US15762196
申请日：2016-05-09
Applicant: LG ELECTRONICS INC.
Inventor： Jiyoung JANG , Pilhyun YOON , Kakjoong KIM , Yongcheol SA
Abstract: An air conditioner and a method of controlling the same are disclosed. The air conditioner includes a controller configured to determine a target evaporation pressure based on information sensed by an outdoor temperature sensor. The controller determines whether the determined target evaporation pressure is changed, based on a difference between a value sensed by an indoor temperature sensor and a set temperature of an indoor space and a value sensed by an indoor humidity sensor.
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公开(公告)号：US20240230193A9
公开(公告)日：2024-07-11
申请号：US18380291
申请日：2023-10-16
Applicant: LG ELECTRONICS INC.
Inventor： Daehyoung KIM , Yongcheol SA , Jiyoung JANG , Chiwoo SONG , Jisung LEE
CPC classification number: F25B49/022 , F25B41/34 , F25B2313/0233 , F25B2600/2513
Abstract: An air conditioner may include a controller; a compressor that compresses a refrigerant; an outdoor heat exchanger through which the refrigerant discharged from the compressor flows; a plurality of expansion valves that expands the refrigerant passed through the outdoor heat exchanger; a plurality of indoor heat exchangers through which the refrigerant passed through the plurality of expansion valves flows; a plurality of connection pipes that connects the plurality of indoor heat exchangers and the compressor; and a plurality of variable valves installed in the plurality of connection pipes. An opening degree of each of the plurality of variable valves may be adjustable via the controller.
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公开(公告)号：US20220187001A1
公开(公告)日：2022-06-16
申请号：US17546212
申请日：2021-12-09
Applicant: LG ELECTRONICS INC.
Inventor： Jiyoung JANG , Yongcheol SA , Chiwoo SONG
Abstract: An air conditioner is provided that may include an outdoor unit having a compressor configured to compress a refrigerant; at least one indoor unit having an indoor heat exchanger, in which the refrigerant is heat exchanged, an indoor expansion valve that expands the refrigerant by adjusting an opening thereof, and a leak sensor that senses leakage of the refrigerant; a gaseous line that connects the outdoor unit and the at least one indoor unit and through which gaseous refrigerant flows; a liquid line that connects the outdoor unit and the at least one indoor unit and through which liquid refrigerant flows; a first shut-off valve disposed adjacent to the at least one indoor unit that opens and closes the gaseous line; a second shut-off valve disposed adjacent to the at least one indoor unit that opens and closes the liquid line; a supercooling pipe branched from the liquid line and connected to an inlet of the compressor; a supercooling expansion valve that expands refrigerant, flowing through the supercooling pipe, by adjusting an opening thereof; and a controller configured to control operation of the compressor and to control opening and closing of the first shut-off valve, the second shut-off valve, the indoor expansion valve, and the supercooling expansion valve. When the leak sensor senses the leakage of the refrigerant, the controller closes the first shut-off valve and the second shut-off valve.
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Patent Agency Ranking
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
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：US20240377109A1
公开(公告)日：2024-11-14
申请号：US18656865
申请日：2024-05-07
Applicant: LG ELECTRONICS INC.
Inventor： Jiyoung JANG , Yongcheol SA , Chiwoo SONG , Jisung LEE
IPC: F25B13/00
Abstract: An air conditioner of the present disclosure includes one or more outdoor units comprising a compressor and an outdoor heat exchanger which exchanges heat between a refrigerant flowing through the compressor and external air; and a plurality of indoor units which are connected to the outdoor unit, and have an indoor heat exchanger, wherein the plurality of indoor units include a first indoor unit group and a second indoor unit group, wherein the outdoor unit and the first indoor unit group are connected by a first gas pipe and a liquid pipe, and wherein the outdoor unit and the second indoor unit group are connected by a second gas pipe and the liquid pipe.
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公开(公告)号：US20240133605A1
公开(公告)日：2024-04-25
申请号：US18380291
申请日：2023-10-15
Applicant: LG ELECTRONICS INC.
Inventor： Daehyoung KIM , Yongcheol SA , Jiyoung JANG , Chiwoo SONG , Jisung LEE
CPC classification number: F25B49/022 , F25B41/34 , F25B2313/0233 , F25B2600/2513
Abstract: An air conditioner may include a controller; a compressor that compresses a refrigerant; an outdoor heat exchanger through which the refrigerant discharged from the compressor flows; a plurality of expansion valves that expands the refrigerant passed through the outdoor heat exchanger; a plurality of indoor heat exchangers through which the refrigerant passed through the plurality of expansion valves flows; a plurality of connection pipes that connects the plurality of indoor heat exchangers and the compressor; and a plurality of variable valves installed in the plurality of connection pipes. An opening degree of each of the plurality of variable valves may be adjustable via the controller.
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公开(公告)号：US20220018581A1
公开(公告)日：2022-01-20
申请号：US17378969
申请日：2021-07-19
Applicant: LG ELECTRONICS INC.
Inventor： Chiwoo SONG , Yongcheol SA , Jiyoung JANG
Abstract: A multi-air conditioner for heating and cooling may include at least one indoor unit for both cooling and heating including an indoor heat exchanger; an outdoor unit for both cooling and heating including a compressor, a plurality of outdoor heat exchangers, and a switching unit disposed on a discharge side of the compressor to switch a flow of refrigerant; and a distributor disposed between the outdoor unit and the at least one indoor unit, that distributes the refrigerant. The plurality of outdoor heat exchangers in the outdoor unit may include a first heat exchanger, a first end of which is connected to the switching unit, and a second end of which is connected to the distributor; a second heat exchanger disposed under the first heat exchanger, a first end of which is configured to be coupled to or decoupled from the second end of the first heat exchanger, and a second end of which is connected to the distributor; and a third heat exchanger disposed under the second heat exchanger, a first end of which is connected to the discharge side of the compressor, and a second end of which is connected to the indoor unit.
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公开(公告)号：US20170089628A1
公开(公告)日：2017-03-30
申请号：US15145875
申请日：2016-05-04
Applicant: LG ELECTRONICS INC.
Inventor： Jiyoung JANG , Yongcheol Sa
CPC classification number: F25B49/027 , F24F1/0011 , F24F1/06 , F24F1/16 , F24F1/50 , F24F1/56 , F24F11/43 , F24F11/81 , F24F2110/12
Abstract: An air conditioner and a method for controlling an air conditioner are provided. The air conditioner may include a first guide provided on at least one surface of an outdoor device of the air conditioner to guide outdoor air to an air inlet, a second guide provided on one surface of the outdoor device to guide air discharged from an air outlet to an outside, and a third guide that guides the air discharged from the air outlet to flow from the second guide to the first guide.
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