Lg Electronics Inc.

Jisung Lee

Yongcheol Sa

Chiwoo Song

Ilyoong Shin

Jaehwa Jung

Jiyoung Jang

Daehyoung Kim

Youngjoo Shin

Ahrae Jo

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 conditioning system and a method for controlling an air conditioning system are provided. The air conditioning system determines loads for each indoor unit of a plurality of indoor units considering capacities of the plurality of indoor units, and a length of an indoor unit pipe connected from a pump to each indoor unit, and maps the plurality of indoor units and a plurality of pumps based on the determined loads.

Air conditioning system and method for controlling air conditioning system

An air conditioning apparatus is provided that may include an outdoor unit including a compressor and an outdoor heat exchanger and through which a refrigerant is circulated, an indoor unit through which a fluid, such as water is circulated, and at least one heat exchange device including a heat exchanger in which the refrigerant and the fluid are heat-exchanged with each other. The at least one heat exchange device may include a high-pressure guide tube that extends from a high-pressure gas tube of the outdoor unit so as to be connected to a first side of the heat exchanger, a low-pressure guide tube that extends from a low-pressure gas tube of the outdoor unit so as to be combined with the high-pressure guide tube, a liquid guide tube that extends from a liquid tube of the outdoor unit so as to be connected to a second side of the heat exchanger, and a solenoid valve installed in the high-pressure guide tube or the low-pressure guide tube to perform an opening and closing operation so as to allow the refrigerant to flow in a first direction. The high-pressure gas tube and the low-pressure gas tube may be connected to each other by a single gas tube, and when the indoor unit performs a cooling operation or a heating operation, flow of refrigerant in the first direction may be blocked in a state in which power is applied to the solenoid valve.

Air conditioning apparatus

An air conditioning apparatus includes an outdoor unit configured to circulate refrigerant, an indoor unit configured to circulate water, and a heat exchange device that connects the indoor unit to the outdoor unit and that is configured to perform heat exchange between the refrigerant and the water. The heat exchange device includes a first heat exchanger and a second heat exchanger, a first refrigerant pipe and a second refrigerant pipe that are connected to the first heat exchanger, a third refrigerant pipe and a fourth refrigerant pipe that are connected to the second heat exchanger, a first expansion valve disposed at the second refrigerant pipe, a second expansion valve disposed at the fourth refrigerant pipe, a bypass pipe that connects the second refrigerant pipe to the third refrigerant pipe, and a bypass valve disposed at the bypass pipe.

An air conditioner includes a bypass pipe connecting a first bypass branch of a first connection pipe, through which high-pressure refrigerant flows, with a second bypass branch of a third connection pipe, through which low-pressure refrigerant flows, to allow bypassing of high-pressure refrigerant in the first connection pipe to the third connection pipe, and a bypass valve mounted in the bypass pipe. During a cooling operation of an indoor unit, the bypass valve is opened to allow bypassing of high-pressure refrigerant of the first connection pipe to the third connection pipe.

Provided is an air conditioning apparatus. The air conditioning apparatus includes an outdoor unit which includes a compressor and an outdoor heat exchanger and through which a refrigerant is circulated, an indoor unit through which water is circulated, a heat exchanger in which the refrigerant and the water are heat-exchanged with each other, a water tube configured to guide the water circulated through the indoor unit and the heat exchanger, a pump installed in the water tube, and a controller configured to analyze an output signal of the pump so as to calculate a ration of an air layer in the water tube, the controller being configured to control a target supercooling degree or target superheating degree of the heat exchanger according to the calculated ratio of the air layer.

An air conditioning apparatus includes a heat exchange device that connects an outdoor unit to an indoor unit and that includes a heat exchanger configured to perform heat exchange between refrigerant and water, thereby reducing an amount of refrigerant used to perform a cooling operation or a heating operation. The apparatus further includes a switching mechanism that connects the outdoor unit to the heat exchange device and that is configured to be connected to both a simultaneous outdoor unit and a switchable outdoor unit to thereby allow the heat exchange device to be installed regardless of the type of the outdoor unit.

An air conditioner and a fluid filling method for an air conditioner are provided. The method may include operating, by the air conditioner, in a fluid supply mode, to fill a group of pipes with a fluid, such as water, determining whether an amount of the fluid in the group of pipes is appropriate while continuously filling the group of pipes with the fluid, and outputting, by an output device, information indicating that filling of the fluid has been completed when it is determined that the amount of the fluid is appropriate. The fluid supply mode may include a first fluid supply mode in which fluid is supplied while the outdoor unit is stopped, and a second fluid supply mode in which the fluid is supplied while the outdoor unit is operated.

Air conditioner and fluid filling method for an air conditioner

An air conditioning apparatus includes an outdoor device that is configured to circulate refrigerant and that includes a compressor and an outdoor heat exchanger, a plurality of indoor devices configured to circulate water, and a heat exchange device connecting the outdoor device with the indoor device. The heat exchange device includes a heat exchanger configured to exchange heat between the refrigerant and the water, and a switch device configured to control flow of refrigerant between the indoor devices and the heat exchanger.

An air conditioning apparatus includes: an outdoor unit configured to circulate refrigerant; an indoor unit configured to circulate water; a heat exchange device that connects the indoor unit to the outdoor unit and that is configured to perform heat exchange between the refrigerant and the water; and a plurality of pipes and valves. The heat exchange device includes first and second heat exchangers. The air conditioning apparatus is configured to perform a cooling operation or a heating operation based on operating one or both of the first heat exchanger and the second heat exchanger and one or more of the valves.

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Seoul, South Korea

Jisung Lee