Lg Electronics Inc.

Sim Won Chin

In Hwa Jung

Jung Woo Lee

Dong Soo Moon

Moon Kee Chung

Seong Won Bae

Deok Huh

Chang Seon Lee

Hyun Jong Kim

Mun Kee Chung

In Cheol Yun

Cheol O Ahn

Ki Su Hong

Kee Soo Hong

Dong Su Moon

Wan Soo Kim

Jungwoo Lee

Seung Chul Park

In Kyu Kim

Ja Hyung Koo

Soo Yeon Shin

Seok Ho Choi

Bum Suk Kim

Sung Yeob Lim

In Hwa Chung

Yong Hee Jang

Byoung Jin Ryu

The air conditioner includes a first and a second heat exchanger, a plurality of compressors, a pipe for uniform distribution of oil, a plurality of oil separators, and an oil return opening. The first heat exchanger performs heat exchange between air of an indoor space and refrigerant to condition the air. The second heat exchanger is connected to the first heat exchanger through a pipe, to perform heat exchange between the refrigerant and water. The plurality of compressors is installed at one side of the second heat exchanger, to compress the refrigerant to a high temperature and a high pressure. The pipe for uniform distribution of oil communicates the plurality of compressors with each other, to guide a flow of oil within the plurality of compressors to flow between the compressors. Each oil separator is provided at an outlet of a respective compressor, to separate oil included in refrigerant discharged from the compressors. The oil return opening guides the oil separated by each of the oil separators to flow into all or any one of the plurality of compressors.

Air conditioner

A capacity-variable air conditioner is capable of controlling capacity and consumed electricity in response to operation mode. The refrigerant compression quantity of a compressor is variably adjusted by control of open/close operation modes via selective combination of open/close valves of bypass pipes and bypass valve of the compressor in response to the operation mode. The capacity-variable air conditioner discharges some of the refrigerant infused into the compressor while the bypass valve of the compressor is opened under energy saving operation mode, such that refrigerant circulation quantity can be adjustably reduced under the energy saving operation mode where load of the compressor is less than that of a normal operation mode, thereby enabling a reduction in the capacity and consumed electricity.

Capacity-variable air conditioner

A heat exchanger of an air conditioner comprising: at least one or more refrigerant inlets for connecting a compressor for compressing refrigerant to an expansion device for expanding condensed refrigerant via a piping and for receiving high temperature/pressure refrigerant coming from the compressor via a four-way valve; at least one or more refrigerant outlets for discharging the refrigerant to the expansion device, wherein the number of the refrigerant outlets is greater than that of the refrigerant inlets, such that same performances can be achieved for both the cooling and heating purposes albeit the heat exchanger being simplified in the structure thereof, and manufacturing cost can be reduced to thereby improve the productivity.

Heat exchanger of air conditioner

An air conditioner is disclosed which includes a damper adapted to select a desired path of air humidified by a moisture release portion of a desiccant wheel in accordance with a humidification or dehumidification mode. In accordance with operation of the damper, humidified air is heat-exchanged in a heat exchanger in the dehumidification mode, so that the air is dehumidified. The dehumidified air is discharged into a room. In the humidification mode, the humidified air is directly discharged to the room. Thus, the air conditioner can be used as a humidifier or dehumidifier in accordance with a user selection.

A humidity adjusting apparatus includes at least one desiccant linearly reciprocated between a dehumidifying unit and a drying unit, and a motor for driving the desiccant to be moved, thereby improving dehumidifying and humidifying efficiency.

Humidity adjusting apparatus using desiccant

Provided is a high-performance heat exchanger. A porous material is formed on one side of the heat exchanger. The porous material exchanges heat with a coolant pipe and/or a fin. Pores formed in the porous material improve exchanging heat with the air, thereby improving a heat exchanging performance of the heat exchanger.

High-performance heat exchanger

An apparatus for enhancing heat transfer efficiency of an endothermic/exothermic article includes a heat sink disposed on the endothermic/exothermic article to enhance heat transmission, a plurality of fins formed on the heat sink to enhance heat exchange, and a porous medium disposed on the fins to increase cooling efficiency of the endothermic/exothermic article by air flowing between gaps between the fins and the porous medium.

Apparatus for enhancing heat transfer efficiency of endothermic/exothermic article

A blower fan includes a shroud, a hub for guiding airflow being discharged, and a plurality of blades disposed between the shroud and the hub. A first outer diameter of a first portion, which is close to the hub, of the blade is different from a second outer diameter of a second portion, which is close to the shroud, of the blade.

Blower fan

Disclosed is an indoor unit of an air conditioner, in which at least one air inlet is formed at part of or entire bottom surface the indoor unit and an evaporator is installed between the air inlets and a blowing fan so that indoor air sucked in through air inlets passes through the evaporator and is discharged from an outlet vent formed at the front surface of the indoor unit by the operation of a blowing fan. The indoor unit of the air conditioner includes air inlets, an evaporator, a blowing fan, and an outlet vent, wherein the air inlets are formed in an opposite direction of the outlet vent for discharging cooled air; the air inlets are formed on the bottom surface of the indoor unit; indoor air flown into the indoor unit passes through the evaporator and the blowing fan and is discharge from the outlet vent; and air path from the air inlets en route to the outlet vent via the evaporator and the blowing fan is not overlapped.

Provided is an improved blower fan structure in which length of blades is increased and inlet and outlet angles of the blades are optimized for highly increasing an efficiency of the blower fan. Particularly, an outer diameter of the blades is more than or equal to two times of an inner diameter thereof, for increasing the efficiency without generating a noise.

Blower fan structure

A piping structure of an air conditioner causes a looped main piping connected to a compressor of an outdoor unit of the air conditioner to be branched into two or more branch pipings within a predetermined interval of the main piping and cause the branch pipings to be jointed at an arbitrary location. According to the piping structure, it is possible to reduce a vibration by an interference phenomenon, which is generated when either a refrigerant pulsation or a periodic vibration of the compressor is divided and then combined.

Piping structure for air conditioner

An absorption pipe structure of a compressor, capable of reducing vibration of the absorption pipe and making the machinery room small-sized, by making short the length of the absorption pipe connected with the compressor and forming the curved part formed in a proper diameter, is provided.

Absorption pipe structure of compressor

Provided is a pipe structure for an outdoor unit of an air conditioner, in which a length of an induction pipe of a compressor mounted in the outdoor unit is shorter than a connection pipe in the outdoor unit in order to decrease vibration of the outdoor unit of the air conditioner.

Pipe structure for outdoor unit of air conditioner

A pipe structure of an air conditioner, wherein the pipes inside the machinery room are concentrated on one side of the compressor to form long up-down direction so that the pipes inside the machinery room of the air conditioner may be formed in a compact manner, is provided.

Pipe structure of air conditioner

There is provided an air conditioner, and more particularly, an apparatus and method for controlling a heating operation in a heat pump system, in which a continuous heating operation is provided. 1. The apparatus for controlling a heating operation in a heat pump system includes: at least one compressor for compressing a refrigerant into a high-temperature and high-pressure refrigerant vapor; a passage switching unit for switching a refrigerant circulation passage depending on a heating mode or a cooling mode; an indoor heat exchanger for condensing the high-temperature and high-pressure refrigerant vapor for a heating operation or a defrosting/heating operation of the heating mode; an expansion unit through which the condensed refrigerant passes during the defrosting/heating operation; an outdoor heat exchanger for defrosting at least one tube region by using the condensed refrigerant discharged from the expansion unit; and a defrosting control unit for expanding and decompressing the refrigerant that flows between the tube regions, or for bypassing the refrigerant.

Growing community of inventors

Gwangmyeong-si, South Korea

Sim Won Chin