Lg Electronics Inc.

Daehyoung Kim

Jaehwa Jung

Yongcheol Sa

Junseong Park

Pilhyun Yoon

Donghwi Kim

Chiwoo Song

Eunjun Cho

Ilyoong Shin

Hyungjoon Kim

Jisung Lee

Jiyoung Jang

An air conditioner may include a controller; a compressor; an outdoor heat exchanger; a plurality of indoor heat exchangers; a switching valve that selectively guides a refrigerant discharged from the compressor to the outdoor heat exchanger or the plurality of indoor heat exchangers; high pressure pipes that connect the switching valve and the plurality of indoor heat exchangers; high pressure valves installed in the high pressure pipes; low pressure pipes that connect an inlet of the compressor and the high pressure pipes. low pressure valves installed in the low pressure pipes; indoor pipes, which are opposite to the high pressure pipes with respect to the plurality of indoor heat exchangers and connected to the plurality of indoor heat exchangers; indoor expansion valves installed in the indoor pipes; a liquid pipe that connects the outdoor heat exchanger and the indoor pipes; and an outdoor expansion valve installed in the liquid pipe.

Air conditioner

An air conditioner is provided that includes a compressor that compresses a refrigerant; an accumulator that supplies the refrigerant to the compressor; a condenser that condenses the refrigerant discharged from the compressor; an expansion valve that expands the refrigerant having passed through the condenser; an evaporator that includes a heat exchange pipe through which the refrigerant having passed through the expansion valve flows, and that evaporates the refrigerant flowing through the heat exchange pipe; a gas-liquid separation pipe that connects a first point and a second point located between a first end and a second end of the heat exchange pipe; and a bypass pipe a first end of which is connected to the gas-liquid separation pipe and a second end of which is connected to the accumulator. The gas-liquid separation pipe includes a first portion a first end of which is connected to the first point and a second end of which is connected to one end of the bypass pipe; and a second portion that extends from the first point between the first end and the second end of the first portion, and is connected to the second point.

An outdoor unit for an air conditioner may include a case, a controller disposed in the case, a coupling member configured to connect the case to the controller, and a cooling pipe coupled to one side of the controller so as to perform heat-exchange with the controller. The controller may include a first controller connected to the coupling member so as to be rotatably coupled to the case, and a second controller coupled to the cooling pipe so as to be fixedly installed inside of the case.

Outdoor unit of air conditioner

The present disclosure is to provide an air conditioner, capable of performing constant air volume control regardless of the variation in a supply voltage and a method for operating the same.

Fan motor of air conditioner and operating method thereof

A multi-air conditioner for heating/cooling operations, including at least one indoor unit for heating/cooling operations including an indoor heat exchanger; and an outdoor unit for heating/cooling operations including a compressor, an outdoor heat exchanger, and a switching unit configured to be disposed in a discharge side of the compressor to switch a flow of refrigerant. The outdoor unit includes a receiver that selectively stores refrigerant or oil according to a cooling or heating operation mode and provides the stored refrigerant or oil to the compressor. Accordingly, in the accumulator of the multi-air conditioner using the receiver, the receiver which is not used in the heating mode may be converted and used for oil storage, thereby preventing oil burnout without adding structure.

Multi-air conditioner for heating and cooling operations

An air conditioning apparatus includes: an outdoor unit configured to circulated refrigerant; a first pipe and a second pipe that are connected to the outdoor unit; an indoor unit configured to circulate water; and a heat exchange device that connects the outdoor unit to the indoor unit. The heat exchange device includes a first heat exchanger and a second heat exchanger that are each configured to perform heat exchange between the refrigerant and the water, a plurality of connection pipes, a bypass pipe configured to guide the refrigerant passing through the first heat exchanger to the second heat exchanger, and a bypass valve installed at the bypass pipe.

Air conditioning apparatus

An outdoor system for an air conditioner may include at least one outdoor unit, the at least one outdoor unit including a compressor; an outdoor heat exchanger; a pair of two-stage compression lines that extends to outside of the outdoor system; a pair of connection lines that extends to the outside of the outdoor system and communicates with an indoor unit; and multiple valves that open/close the pair of two-stage compression lines and the pair of connection lines when the outdoor system is operated in a one-stage heating mode or a two-stage heating mode.

Outdoor system for air conditioner

An air conditioner is disclosed. The air conditioner comprises: an indoor unit having an indoor heat exchanger installed therein; a first outdoor unit having a first outdoor heat exchanger and a first compressor installed therein; a second outdoor unit having a second outdoor heat exchanger and a second compressor installed therein; an auxiliary module which connects the indoor unit, the first outdoor unit, and the second outdoor unit; a first connection line by which the auxiliary module is connected to the first outdoor unit; a second connection line by which the auxiliary module is connected to the second outdoor unit; and a two-stage compression line by which the first outdoor unit is connected to the second outdoor unit.

Growing community of inventors

Seoul, South Korea

Daehyoung Kim