Lg Electronics Inc.

Byoungjin Ryu

Beomchan Kim

Byeongsu Kim

Younghwan Ko

Yoonho Yoo

Baikyoung Chung

Jaeheuk Choi

Yonghee Jang

Sangil Park

Taeman Yang

Choonmyun Chung

Wooho Cha

Kyungrock Kim

Chungwoo Jung

Hongjoo Yang

Beom Chan Kim

Byeong Su Kim

The present invention relates to a cooling system for a low temperature storage. The cooling system for the low temperature storage according to an embodiment of the present invention comprises: a first outdoor valve disposed between a compressor and an outdoor heat exchanger and selectively restricting an inflow of a refrigerant into the outdoor heat exchanger; and a first bypass pipe branched from an inlet side of the first outdoor valve and guiding the refrigerant to bypass the outdoor heat exchanger, so that the refrigerant can be guided to bypass the outdoor heat exchanger during defrosting operation of the cooling system.

Cooling system for low temperature storage

A refrigerant regenerating apparatus is disclosed. A refrigerant regenerating apparatus of the present disclosure includes: a regenerator into which a refrigerant flows and from which the refrigerant is discharged, the regenerator configured to separate and discharge oil contained in a refrigerant flowing in the regenerator; and a recoverer into which the refrigerant discharged from the regenerator flows, the recoverer including a compressor configured to compress a refrigerant flowing in the recoverer and a heat exchanger configured to condense a refrigerant discharged from the compressor, in which the regenerator includes: a charger configured to charge oil contained in the refrigerant flowing in the regenerator with positive ions or negative ions using corona discharge; and a collector configured to electrically collect the oil charged through the charger.

Refrigerant regenerating apparatus

An air conditioner including an outdoor unit, an air conditioning indoor unit, a showcase indoor unit, and a combination unit. The combination unit includes a first gas control unit connected to the air conditioning indoor unit gas pipe, a second gas control unit connected to the showcase indoor unit gas pipe, a first pipe which connects the outdoor unit liquid pipe and the indoor unit liquid pipe, and a second pipe which connects the first pipe and the second gas control unit. The first gas control unit and the second gas control unit are converged to be connected to the outdoor unit gas pipe, so that the air conditioning indoor unit and the showcase indoor unit can use a single outdoor unit, and heat emitted from the air conditioning indoor unit to a room during a heating operation is used as condensation heat of the showcase indoor unit.

Air conditioner

An outdoor unit is connected to a refrigerator and has two compressors that are connected in series, and a control method thereof. The outdoor unit according to an embodiment of the present invention includes a low pressure side compressor for compressing a refrigerant; a high pressure side compressor for compressing the refrigerant compressed by the low pressure side compressor; an outdoor heat exchanger for condensing the refrigerant compressed by the high pressure side compressor; a heat recovery unit for cooling the refrigerant condensed in the outdoor heat exchanger by exchanging heat with the refrigerant evaporated in the air conditioner; and a supercooler for expanding a part of the refrigerant cooled in the heat recovery unit to cool another part of the refrigerant cooled in the heat recovery unit, so that the discharge temperature of the low pressure side compressor and/or the high pressure side compressor can be reduced.

Outdoor unit and control method thereof

An air conditioner may include a continuous refrigeration apparatus including a first gas control unit connected to a first indoor heat exchanger, a second gas control unit connected to a second indoor heat exchanger, a first pipe connecting a liquid pipe of an outdoor unit and a liquid of an indoor unit, and a second pipe branched from the first pipe and connected to the first and second gas control units. The first gas control unit may include a first-first flow path connecting the first gas control unit to the second pipe; a first-second flow path connected to the first-first flow path, and through which refrigerant discharged from the first indoor heat exchanger flows during a refrigeration operation; and a first-third flow path connected in parallel with the first-second flow path, and guiding refrigerant from the compressor to the first indoor heat exchanger during a defrosting operation.

Heat pump with simultaneous cooling and defrosting of heat exchangers arranged in parallel

The present invention relates to a heat exchanger. The heat exchanger according to the present invention includes: an outer pipe; a first sub heat exchange part and a second sub heat exchange part which are disposed inside the outer pipe, and in which a second fluid flows around a first fluid pipe through which a first fluid flows; and a main heat exchange part which is disposed, inside the outer pipe, between the first sub heat exchange part and the second sub heat exchange part, and in which the first fluid flows around a plurality of narrow pipes through which the second fluid flows.

Heat exchange apparatus

A micro channel type heat exchanger in which a first heat exchange module and a second heat exchange module are stacked, the micro channel type heat exchanger including a plurality of flat tubes disposed within the first heat exchange module and the second heat exchange module, and a heat blocking member configured to form a heat blocking space by separating the first heat exchange module and the second heat exchange module, wherein the heat blocking member forms a heat blocking space between the first heat exchange module and the second heat exchange module that minimizes heat conductivity and improves thermal exchange performance of the heat exchanger.

Micro channel type heat exchanger

A micro channel type heat exchanger having a first pass disposed in some flat tubes located in a first heat exchange module and along which a refrigerant flows in one direction, a second pass disposed in some of the remaining flat tubes located in the first heat exchange module and along which the refrigerant supplied from the first pass flows in an opposite direction to that of the first pass, a third pass distributed and located in the remainder of flat tubes located in the first heat exchange module other than the first pass and the second pass and in some flat tubes located in a second heat exchange module, and a fourth pass disposed in the remainder of the flat tubes located in the second heat exchange module and along which a refrigerant supplied from the third pass flows in an opposite direction to a direction of the third pass.

An air conditioning system that includes at least one indoor unit that uses water as a working fluid, an outdoor unit that uses a refrigerant as a working fluid, the outdoor unit including a compressor compressing the refrigerant and an outdoor heat exchanger for heat-exchange with the refrigerant, and a heat collection unit connecting the at least one indoor unit to the outdoor unit, the heat collection unit including at least one heat exchange part for heat-exchanging water supplied from the at least one indoor unit with the refrigerant supplied from the outdoor unit.

Air conditioning system

An air conditioner and a method for controlling an air conditioner are provided that efficiently inject a refrigerant into a compressor. The air conditioner may include a compressor to compress a refrigerant; a condenser to condense the refrigerant compressed at the compressor; an evaporator to evaporate the refrigerant condensed at the condenser; and an injection module to selectively or simultaneously inject some or a portion of the refrigerant flowing from the condenser to the evaporator into a high pressure side and a low pressure side of the compressor.

Air conditioner and method for controlling an air conditioner

A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a main frame configured to support an upper portion of a rotating shaft; a fixed scroll coupled to the main frame and having a first wrap; an orbiting scroll provided to perform an orbiting motion with respect to the fixed scroll and having a second wrap which forms a plurality of compressions chamber between the first wrap and the second wrap; a suction port configured to enable a first refrigerant to be suctioned into the compression chamber; a first introduction port provided at a first side of the fixed scroll and configured to inject the first refrigerant into the plurality of compression chambers; a second introduction port provided at a second side of the fixed scroll and configured to inject a second refrigerant having a pressure different from a pressure of the first refrigerant into the plurality of compression chambers; and a third introduction port provided at a third side of the fixed scroll and configured to inject a third refrigerant having a pressure different from the pressure of the first refrigerant and the second refrigerant into the compression chamber. The first introduction port may be provided at a position at which injecting of the refrigerant through the first introduction port is able to be performed before suctioning of the refrigerant through the suction port is completed.

Scroll compressor and air conditioner including a scroll compressor

An air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a converting unit, a first injection module, and a second injection module. The first injection module injects a portion of refrigerant flowing from the indoor heat exchanger to the outdoor heat exchanger to the compressor in a heating operation and supercools refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger in a cooling operation. The second injection module injects a portion of refrigerant flowing from the indoor heat exchanger to the outdoor heat exchanger to the compressor in the heating operation and injects refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger to the compressor in the cooling operation.

Air conditioner and method for controlling the same

An air conditioner is provided. The air conditioner includes a compressor having a suction unit and a plurality of injection inlets, an inside heat exchanger into which refrigerant compressed in the compressor is introduced during a heating operation, an outside heat exchanger into which refrigerant compressed in the compressor is introduced during a cooling operation, a plurality of refrigerant separation devices through which refrigerant condensed in the inside heat exchanger or the outside heat exchanger pass, a plurality of injection flow paths which extends from the three refrigerant separation devices to the plurality of injection inlets, and a bypass flow path which extends from any one injection flow path among the plurality of injection flow paths to the suction unit of the compressor.

Provided are a supercooler and an air conditioner including the same. The supercooler disposed between a condenser and an evaporator of an air conditioner to supercool a refrigerant condensed in the condenser, thereby allowing the supercooled refrigerant to flow into the evaporator includes an inner tube in which a first refrigerant passing through the condenser flows, an outer tube having an inner space in which the inner tube is disposed, the outer tube allowing a second refrigerant heat-exchanged with the first refrigerant to flow by using the inner tube as a boundary, and a baffle supporting the inner tube to prevent the inner tube from being shaken within the outer tube.

Subcooler and air conditioner including the same

An air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a converting unit, an accumulator, and injection module, a supercooling valve, and an injection valve. The injection module expands and vaporizes a portion of refrigerant flowing from the indoor heat exchanger to the outdoor heat exchanger in the heating operation. The supercooling valve is disposed between the injection module and the accumulator and is opened to direct the portion of the refrigerant vaporized in the injection module to the accumulator in the heating operation and then closed after a predetermined time passes. The injection valve is disposed between the injection module and the compressor and is opened when the supercooling valve is closed in the heating operation, thereby injecting the portion of the refrigerant vaporized in the injection module to the compressor.

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Seoul, South Korea

Byoungjin Ryu