Lg Electronics Inc.

Pilhyun Yoon

Minsoo Kim

Yongcheol Sa

Chiwoo Song

Jaehwa Jung

Eunjun Cho

Kakjoong Kim

Jungmin Park

Youngmin Lee

Yejin Kim

Beomsoo Seo

Junseong Park

Daehyoung Kim

Kiwoong Park

Joonshik Yoon

Hyungyul Yum

Seongho Hong

Junho Hwang

Youngheon Kwon

Jaewon Lee

Ilyoong Shin

Jihyeong Ryu

Jiyoung Jang

Hyeri Park

Hojin Seo

Seungyup Kim

Sungheon Ryu

Sounghun Lee

A communication kit comprising a communication module configured to communicate with a thermostat, an indoor unit, and an outdoor unit; and a controller configured to generate an operation signal to be transmitted to the indoor unit and the outdoor unit, based on a signal received from the thermostat, wherein the controller is configured to determine an operation mode of the indoor unit and the outdoor unit based on an indoor temperature when a backup function of the thermostat is executed.

Communication kit

An air conditioner includes an outdoor unit, a first indoor unit having a first indoor heat exchanger connected to the outdoor unit, a first intake duct connected to an inlet opening of the first indoor unit, a first air supply duct guiding air discharged from an outlet opening of the first indoor unit to indoor room, a second indoor unit having a second indoor heat exchanger connected to the outdoor unit, a second intake duct connected to an inlet opening of the second indoor unit and a second air supply duct guiding air discharged from an outlet of the second indoor unit to indoor room. The first indoor heat exchanger and the second indoor heat exchanger include a moisture absorption layer.

Air conditioner

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

A hybrid multi-air conditioning system with no receiver is provided for optimal valve control. The hybrid multi-air conditioning system includes: a hot-water unit for exchanging heat between refrigerant and water; at least one indoor unit installed indoors and comprising an indoor heat exchanger and an indoor unit expansion valve; and an outdoor unit connected to the indoor unit and the hot-water unit via a refrigerant pipeline and comprising an outdoor heat exchanger, a compressor, and an outdoor unit expansion valve, wherein, when an abnormal refrigerant enters either the at least one indoor unit or the outdoor unit according to an operation mode, the abnormal refrigerant is shut off from the hot-water unit and the at least one indoor unit or the outdoor unit which operates as a condenser. Accordingly, the hybrid multi-air conditioning system improves heat exchange efficiency via direct heat transfer between refrigerant and water by having a coil wound on the water tank to transfer heat between refrigerant and water.

Hybrid multi-air conditioning system

An air conditioning system having an auxiliary heat source is provided and that may include an outdoor unit, an indoor heat exchanger connected to the outdoor unit, the indoor heat exchanger including a temperature sensor, an auxiliary heat source arranged as an auxiliary to the outdoor unit and operated by an energy source different from an energy source of the outdoor unit, a thermostat configured to control a temperature of an installation space supplied with cold air or warm air by the outdoor unit and the auxiliary heat source, and a communicator. The communicator may include an input unit connected to the thermostat, a first output unit connected to the auxiliary heat source, a second output unit connected to the outdoor unit, and a controller configured to process signals between the input unit, the first output unit, and the second output unit.

Air conditioning system and method for controlling air conditioning system

An air conditioner may include a compressor that compresses refrigerant; a condenser that condenses the refrigerant; at least one expansion valve that expands the refrigerant; a gas-liquid separator that separates and discharges the refrigerant into gas refrigerant and liquid refrigerant; an evaporator that evaporates the liquid refrigerant discharged from the gas-liquid separator; a refrigerant inflow pipe that connects the expansion valve and the gas-liquid separator; a bypass pipe that connects the gas-liquid separator and the compressor; and a refrigerant discharge pipe that connects the gas-liquid separator and the evaporator. The gas-liquid separator may include a housing in which a portion of the refrigerant inflow pipe, the bypass pipe, and the refrigerant discharge pipe may be disposed, and first and second partition walls disposed in the housing.

An air conditioner may include a compressor that compresses a refrigerant; a condenser that condenses the refrigerant discharged from the compressor; at least one expansion valve that expands the refrigerant passed through the condenser; at least one gas-liquid separation pipe through which the refrigerant passed through the at least one expansion valve flows; a gas-liquid separator, into which the refrigerant passed through the at least one gas-liquid separation pipe is introduced, that separates and discharges the refrigerant introduced into the gas-liquid separator into gas refrigerant and liquid refrigerant; and an evaporator that evaporates the liquid refrigerant discharged from the gas-liquid separator. The gas refrigerant discharged from the gas-liquid separator and the refrigerant passed through the evaporator may be provided to the compressor.

A heat exchanger includes heat exchange fins, refrigerant pipes are arranged across the heat exchange fins, and connecting pipes connected to the refrigerant pipes to thereby define refrigerant passages. The connecting pipes include a first pipe portion having a first end connected to one of the refrigerant pipes, a branch pipe portion that is branched from the first pipe portion, that extends parallel to the first pipe portion, and that is connected to another of the refrigerant passages, and a second pipe that is connected to the first pipe portion and that is configured to guide gas-phase refrigerant separated from the refrigerant in the first pipe portion. The second pipe includes an inner insert portion inserted into a second end of the first pipe portion and an outlet portion that extends from the inner insert portion in direction opposite to the second end of the first pipe portion.

Outdoor heat exchanger and air conditioner having the same

Provided is an air conditioner capable of improving heating performance in a cold region by reducing a refrigerant pressure loss in an outdoor heat exchanger in a heating operation. The air conditioner includes a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger. The outdoor heat exchanger may include a plurality of unit channels into which a refrigerant channel is partitioned, and a separating device installed in each of the plurality of unit channels and configured to separate a liquid refrigerant component and a vapor refrigerant component in each of the plurality of unit channels in a heating operation. The air conditioner may further include a compressor suction channel connecting a heating-operation outlet of the outdoor heat exchanger and an inlet of the compressor, and a bypass pipe connecting the separating device and the compressor suction channel.

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 conditioning system including one or more supercooling heat exchangers, a supercooling expansion device, a temperature sensor, and a pressure sensor so as to measure and control a current supercooling degree value of a fluid coolant flowing between a fluid pipe and a plurality of indoor devices.

Air conditioning system

An oil separator and an air conditioner including an oil separator are provided. The oil separator may include a housing including a suction tube that guides a refrigerant, in which an oil may be mixed, into the housing and a discharge tube that discharges refrigerant separated from the refrigerant, in which the oil may be mixed, to the outside, a first collection tube that communicates with a lower portion of the housing to discharge the oil separated from the oil to a compressor, a second collection tube that communicates with a side surface of the housing to discharge the oil separated from the refrigerant to the compressor, and a control valve provided in communication with the first collection tube or the second collection tube to control a flow of the oil through the first collection tube or the second collection tube.

Oil separator and air conditioner including an oil separator

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.

Air conditioner and method of controlling the same

An air conditioner and a control method for an air conditioner are provided. The air conditioner may include a compressor, a flow switch installed at an outlet side of the compressor, a first guide pipe extending from the flow switch to an outdoor heat exchanger, a second guide pipe extending from the flow switch to an indoor unit, a third guide pipe extending from the outdoor heat exchanger to the indoor unit, a bypass passage extending from the second guide pipe to the third guide pipe to allow at least a portion of the refrigerant in the second guide pipe to be bypassed to the third guide pipe or to allow at least a portion of the refrigerant in the third guide pipe to be bypassed to the second guide pipe, and a bypass valve installed on the bypass passage.

Air conditioner and control method therefor

A method of controlling an air conditioner, including inputting, by an operation command input part, an operation command for the air conditioner through which a refrigerating cycle circulates; sensing, by an outside temperature sensor, an outside temperature; sensing, by an outside humidity recognition part, an outside humidity; sensing, by a low pressure sensor, a low pressure of the refrigerating cycle; recognizing, by a controller, information about the outside temperature, the outside humidity, and the low pressure; entering, by the controller, a changing mode in which a first target high pressure of the refrigerating cycle is changed when the low pressure is less than a first reference low pressure; and changing, by the controller, an operation frequency of a compressor of the air conditioner in response to a range of the low pressure when the changing mode is performed.

Growing community of inventors

Seoul, South Korea

Pilhyun Yoon