Lg Electronics Inc.

Kang-Wook Cha

Young-Ju Bae

Seong-min Kang

Yang-Ho Kim

Si-Kyong Sung

In-Gyu Kim

Dong-Hyuk Lee

Kyeong-Wook Heo

Young-Ho Hong

Kyeong-Ho Kim

Tae-Geun Kim

Byung-Il Park

Jae-Hyung Koo

Ja-Hyung Koo

Seung-Jun Lee

Sang-Myung Byun

Seoung-Yeon Cho

Joon-Hong Park

Jac-Hyung Koo

Seung-Mun An

Geun-Hyoung Lee

Jin-Soo Kim

Tac-Goun Kim

Byung-II Park

Young-Yu Bae

Kycong-Ho Kim

A multi-stage rotary compressor comprises: a casing having a sealed space therein; a driving unit installed in the casing, for generating a driving force; a first compression unit and a second compression unit for receiving the driving force from the driving unit and compressing a refrigerant; and a connection unit for connecting the first and second compression units and guiding the refrigerant discharged from the second compression unit to be sucked directly in the first compression unit and then re-compressed, by which it is possible to vary capacity, even using every plurality of compression units, and to obtain power saving effect suitable for a saving mode.

Multi-stage rotary compressor

An air conditioner comprises: a first compression unit (C) and a second compression unit (C) for respectively compressing a refrigerant; an outdoor heat exchanger () provided at an outdoor unit and connected via the secondcontrol valve () to the first compression unit (C) and the second compression unit (C); and indoor heat exchanger () provided at an indoor unit is connected via the secondcontrol valve () to the first compression unit (C) and the second compression unit (C) and via the expansion valve () to the outdoor heat exchanger; and a first control valve () for controlling a refrigerant flow by selectively connecting the first compression unit (C) and the second compression unit (C) in series or in parallel. As the first compression unit (C) and the second compression unit (C) are selectively connected to each other in series or in parallel, a capacity of the air conditioner is varied according to a change of an indoor temperature and fabrication cost is minimized.

Air conditioner and driving method thereof

A capacity varying rotary compressor is provided. The compressor includes a casing that maintains a discharge pressure state, a motor installed in the casing that generates a driving force, one or more cylinder assemblies provided in the casing to compress refrigerant with a rolling piston and a vane. The rolling piston is eccentrically coupled to a rotation shaft of the motor to perform a linear motion, and a vane restricting device restricts or releases the vane from the rolling piston according to a difference in pressures applied to the vane. A structure of the compressor may be simplified, resulting in reduced production costs and enhanced productivity. Further, as the vane is restricted by a pressure differential, reliability may be enhanced.

Capacity varying type rotary compressor

A capacity varying rotary compressor is provided. The compressor includes a cylinder mounted in a casing, and a vane pressure chamber provided at a rear side of a vane that divides an inner space of the cylinder into a suction chamber and a compression chamber. A pressure controlling unit supplies a discharge pressure or a suction pressure to the vane pressure chamber to thereby restrict or release a motion of the vane. A pressure leakage preventing unit couples the cylinder and bearings positioned at opposite sides of the cylinder to form the vane pressure chamber. A capacity to compress and discharge a refrigerant may be varied according to a load, thereby reducing power consumption of the compressor and simplifying assembly. Furthermore, pressure leakage from the vane pressure chamber may be prevented, thereby enhancing a capacity varying function.

The present invention discloses a built-in type outdoor unit for an air conditioner to provide an efficient installation structure for installing the outdoor unit increased in capacity due to high air conditioning capacity in a built-in type. The built-in type outdoor unit includes a louver frame being fixedly installed on a rectangular space inner wall formed on an outer wall of a building, being divided into a suction area and a discharge area, including a plurality of louver blades in each area, and sucking and discharging air through gaps between the louver blades, an outdoor unit casing being formed in a rectangular parallelepiped shape, being fixedly installed on the inside bottom of the building to contact the louver frame, having its one surface facing the suction area and the discharge area of the louver frame opened and the other surfaces closed, and being divided into a suction unit and a discharge unit corresponding to the suction area and the discharge area of the louver frame, a compressor installed in the suction unit of the outdoor unit casing, for compressing a refrigerant gas supplied from an indoor unit through pipe lines, an air-cooled condenser installed in the suction unit of the outdoor unit casing, for condensing the refrigerant gas from the compressor, and a sirocco cooling fan installed in the discharge unit of the outdoor unit casing, for supplying external air to the air-cooled condenser through the suction area, and discharging heat exchanged air through the discharge area.

Built-in type compressor/condenser unit for air conditioner

The present invention discloses a front suction/discharge type outdoor unit for an air conditioner including: an outdoor unit casing being formed in a rectangular parallelepiped shape, having its one surface externally opened and its other surfaces closed, and being divided into a suction unit and a discharge unit; a compressor installed in the outdoor unit casing, for compressing a refrigerant gas supplied from an indoor unit through pipe lines; an air-cooled condenser positioned in the outdoor unit casing, for condensing the refrigerant gas from the compressor; and a sirocco cooling fan installed in the outdoor unit casing, for forming a diffuser opposite side part of a curvature unit of a housing as a plane unit, forming the fan housing to separate a diffuser opposite side member from a diffuser side member, supplying external air to the air-cooled condenser, and discharging heat exchanged air. A discharge direction of air from the sirocco cooling fan becomes more distant from the most adjacent outdoor unit.

Front suction/discharge type outdoor unit for air-conditioner and outdoor unit installation system using it

A built-in type compressor/condenser unit for an air conditioner with an efficient installation structure for installing an increased capacity outdoor unit is provided. The built-in type compressor/condenser unit includes a louver frame installed on a rectangular shaped space formed on an outer wall of a building. The louver frame is divided into a suction area and a discharge area, each with a plurality of louver blades. The compressor/condenser unit casing is positioned proximate the louver frame, with the surface of the casing which faces the suction area and the discharge area of the louver frame open, and the remaining surfaces of the casing closed. A compressor, an air-cooled condenser, and a cooling fan are installed in the compressor/condenser unit casing.

Built-in type outdoor unit for air conditioner

A built-in type compressor/condenser unit for an air conditioner is provided which prevents re-suction of discharged air. The built-in type compressor/condenser unit includes a louver frame which is installed on an inner portion of an outer wall of a building, and which divided into a suction area and a discharge area each having a plurality of louver blades. A compressor/condenser casing is installed in contact with the louver frame, having its surface facing the suction area and the discharge area of the louver frame opened and the other surfaces closed. The compressor/condenser unit is divided into a suction unit and a discharge unit corresponding to the suction area and the discharge area of the louver frame. The louver frame includes an isolating means for isolating air between the suction area and the discharge area so as to prevent air discharged from the discharge unit thought the discharge area from being re-ingested into the suction unit through the suction area of the louver frame.

The present invention discloses a built-in type outdoor unit for an air conditioner including: a louver frame being fixedly installed on a rectangular space inner wall formed on an outer wall of a building, being divided into a suction area and a discharge area, including a plurality of louver blades in each area, and sucking and discharging air through gaps between the louver blades; an outdoor unit casing being formed in a rectangular parallelepiped shape, being fixedly installed on the inside bottom of the building to contact with the louver frame, and having its one surface facing the suction area and the discharge area of the louver frame opened and the other surfaces closed; and means installed on at least one of the facing surfaces of the louver frame and the outdoor unit casing, for preventing external leakage of air between the louver frame and the outdoor unit casing. A compressor for compressing a refrigerant gas supplied from an indoor unit through pipe lines, an air-cooled condenser for condensing the refrigerant gas from the compressor, and a cooling fan for supplying external air to the air-cooled condenser through the suction area, and discharging heat exchanged air through the discharge area are installed in the outdoor unit casing.

The present invention relates to a front suction/discharge type outdoor unit for an air conditioner to provide an economical installation structure for efficiently installing a large capacity outdoor unit and provide services for easily transferring the outdoor unit, and examining, exchanging and repairing its components, by separating a suction casing and a discharge casing. The front suction/discharge type outdoor unit includes an outdoor unit suction casing having its one surface externally opened, and sucking external air for heat exchange, and an outdoor unit discharge casing being separated from or coupled to the outdoor unit suction casing, sucking external air through the outdoor unit suction casing, having its one surface externally opened, and discharging heat exchanged external air. Here, opened surfaces are respectively formed in the outdoor unit suction casing and the outdoor unit discharge casing to connect them to discharge the sucked external air.

Front suction/discharge type compressor/condenser unit for airconditioner

An apparatus and method for controlling louver blades of a compressor/condenser unit are provided which can improve efficiency of the compressor/condenser unit based on a position of the louver blades and peripheral conditions. The apparatus includes louver blades with a pair of connecting protrusions formed at each end thereof, and a plurality of levers which are rotatably coupled to the connecting protrusions of the louver blades formed in the same positions. A driving member opens and closes the louver blades by moving the levers, and in turn, the louver blades coupled there to. A microcomputer controls the driving member, and the louver blades are opened and closed based on a control signal from the microcomputer.

Apparatus for controlling outdoor unit's louver blades and its method

The present invention discloses an apparatus and method for controlling an operation of an outdoor unit which can efficiently control the outdoor unit by mounting sensors on the outdoor unit. The apparatus for controlling the operation of the outdoor unit includes: a pressure sensor for sensing a pressure of refrigerants in an outlet of a compressor of the outdoor unit; a temperature sensor for sensing a temperature of the refrigerants in an outlet of a condenser; and a microcomputer for comparing the pressure from the pressure sensor and the temperature from the temperature sensor with optimal pressure and temperature ranges, and controlling operation conditions of at least a blast fan and the compressor in the outdoor unit to be inversely proportional to each other according to the comparison results.

Apparatus for controlling operation of outdoor unit and its method

The present invention discloses a built-in type outdoor unit for an air conditioner to provide an efficient installation structure for installing the outdoor unit increased in capacity due to high air conditioning capacity in a built-in type. The built-in type outdoor unit includes a louver frame being fixedly installed on a rectangular space inner wall formed on an outer wall of a building, being divided into a suction area and a discharge area, having a plurality of louver blades in each area, and sucking and discharging air through gaps between the louver blades, and an outdoor unit casing being fixedly installed on the inside bottom of the building to contact the louver frame, and having its one surface facing the suction area and the discharge area of the louver frame opened and the other surfaces closed. A compressor for compressing a refrigerant gas supplied from an indoor unit through pipe lines, an air-cooled condenser for condensing the refrigerant gas from the compressor, and a cooling fan for supplying external air to the air-cooled condenser through the suction area, and discharging heat exchanged air through the discharge area are installed in the outdoor unit casing.

The present invention relates to a front suction/discharge type outdoor unit for an air conditioner which can solve problems due to increased capacity and decreased suction air. The front suction/discharge type outdoor unit includes an outdoor unit casing having its one surface externally opened and its other surfaces closed, the inside of which being divided into a suction unit and a discharge unit, a compressor installed in the suction unit of the outdoor unit casing, for compressing a refrigerant gas supplied from an indoor unit through pipe lines, an air-cooled condenser positioned in the suction unit of the outdoor unit casing to face one surface and face two surfaces contacting one surface and being positioned in parallel among the other surfaces, for inducing external air sucked through one surface to gaps from the facing surfaces for heat exchange, and condensing the refrigerant gas from the compressor by external air sucked in the direction of one surface and the facing surfaces, and a cooling fan installed in the discharge unit of the outdoor unit casing, for supplying external air to the air-cooled condenser, and discharging heat exchanged air.

Growing community of inventors

Changwon-shi, South Korea

Kang-Wook Cha