Lg Electronics Inc.

Dong-Koo Shin

Yang-hee Cho

Cheol-Hwan Kim

Hyo-Keun Park

Byung-Kil Yoo

Nam-Kyu Cho

Cheol Hwan Kim

Byeong-Chul Lee

Jung-Sik Park

Seon-Woong Hwang

Eon-Pyo Hong

Se-Heon Choi

Myung-Kyun K Kiem

Ki-Tae Jang

Sung-Yong Ahn

Hyeong-Kook Lee

Chul-Su Jung

Jin-Young Jung

Yong-Dol Park

Yang-Hee Cho

A hermetic compressor and a refrigeration cycle device having the same are provided. An oil separator is installed either outside or inside of a casing to separate oil from a discharged refrigerant and an oil pump driven by a driving force of a motor is used to recollect the oil separated in the oil separator, whereby the separation between oil and refrigerant can effectively be performed and also a fabricating cost can be reduced. Also, an introduction of the separated refrigerant back into the compressor can be prevented so as to improve a cooling capability of the refrigeration cycle device. In addition, the oil pump is driven by the driving force of the motor, resulting in a simple configuration of the compressor and a reduction of a fabricating cost of the compressor.

Hermetic compressor and refrigeration cycle device having the same

A compressor and an oil separating device therefor are provided which are capable of always maintaining a predetermined amount of oil in the compressor without additionally providing an oil separating device along a refrigerating cycle system. This results in the refrigerating cycle system having simplified piping and the refrigerant discharged from the compressor having a constant pressure, thereby preventing a function of the refrigerating cycle system from being reduced. The compressor includes a casing, a compression device having a compression chamber disposed within the casing and configured to receive, compress, and output a refrigerant, and an oil separating device disposed within the casing. The oil separating device includes a separation chamber configured to circulate the refrigerant to separate oil therefrom, a guide member configured to direct the refrigerant discharged from the compression device, and a circulation member configured to receive the refrigerant from the guide member and direct the refrigerant into the separation chamber in a direction of circulation.

Compressor and oil separating device therefor

A compressor and oil separation device therefore are provided. The oil separation device is integrated with a compressor and includes a first case having a refrigerant inlet into which a refrigerant mixed with oil is sucked and an oil recollecting member through which oil separated from the refrigerant flows, and a second case positioned outside of the first case and having a refrigerant outlet through which refrigerant separated from an oil is discharged. With this constructions, a pipe connecting the compressor and a separate oil separation device is not required, thereby reducing fabrication costs and facilitating installation.

Compressor and oil separation device therefor

An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving motor; and a lower fixed oil guide fixedly coupled between the balance weight and the rotor, for preventing oil from being spread in a casing and guiding the oil downwardly to a bottom of the casing, whereby an oil leakage to the outside of the casing can be minimized, the number of construction components can be reduced, and assembling processes can be simplified.

Oil discharge preventing apparatus of scroll compressor

An apparatus for varying the capacity of a scroll compressor is disclosed. The apparatus for varying the capacity of a scroll compressor includes a bypass passage for connecting a compression pocket under intermediate pressure among compression pockets formed by a wrap of a fixed scroll and a wrap of a orbiting scroll and a suction side through which refrigerant is inhaled into the compression pocket to each other, an opening and closing device for opening and closing the bypass passage, and an elastic opening and closing device mounted in the bypass passage to open and close the bypass passage by the pressure of the compression pocket and the pressure and elasticity of the suction side according as the bypass passage is opened and closed by the opening and closing device. Therefore, it is possible to simplify the structure of varying the capacity of a compressor such that it is possible to reduce the size of the apparatus for varying the capacity of a scroll compressor and to thus reduce the number of parts.

Apparatus for varying capacity of scroll compressor

The present invention discloses an apparatus for varying a capacity of a scroll compressor. The apparatus comprises: a pressure control mechanism for controlling a pressure applied to the back of a orbiting scroll orbiting engaged with a fixed scroll; and a sealing varying mechanism for changing a sealing region of a orbiting scroll wrap and a sealing region of a fixed scroll wrap according to a change in the pressure applied to the back of the orbiting scroll. By this, the capacity of a refrigerant compressed by the fixed scroll and orbiting scroll using a high pressure in a casing can be varied to thus minimize the power consumption.

An apparatus for preventing overheat of a scroll compressor comprising: an overload preventing device for connecting or cut off a power source by a temperature and a current; a valve housing formed as a predetermined shape and fixedly coupled to the fixed scroll; a volume type valve movably inserted into the valve housing for opening and closing the discharge hole of the fixed scroll; and a valve pressurizing means located in the valve housing for increasing an input current by pushing the volume type valve and thus by blocking the discharge hole when temperature of discharge gas discharged to the discharge hole of the fixed scroll is more than a predetermined temperature. Accordingly, when a temperature of discharge gas is drastically or gradually increased and thus becomes a preset high temperature by several conditions at the time of driving the compressor, a driving of the overheated state is stopped by an immediate reaction thus to prevent a component damage.

Appartus for preventing overheat of scroll compressor

An oil supplying apparatus for an opposed type reciprocating compressor comprises oil kickers which are mounted on spring supporting plates coupled to armatures of respective reciprocating motors, or oil valves which are mounted on oil paths formed on a cylinder and coonnecting with a suction path, and thereby, oil in a casing can be supplied to a slant portion between the cylinder and pistons regardless of the installation type of the compressor. In addition, lack of oil in the compressor and friction caused by the lack of oil can be prevented in advance, and a reliability of the compressor can be improved.

Oil supplying apparatus for opposed type reciprocating compressor

In a cooling system for an integrated circuit chip, by including an evaporator contacted-combined with an integrated circuit chip installed onto a board and absorbing heat generated at the integrated circuit chip; a compressor connected to the evaporator by a first connection pipe; a condenser connected to the compressor by a second connection pipe; an expansion means connected to the condenser by a third connection pipe and simultaneously connected to the evaporator by a fourth connection pipe; and a mounting board installed onto the board by a board combining means and mounted with the compressor, the condenser and the expansion means, it is possible to perform the operation of the integrated circuit chip smoothly, and accordingly a reliability of a product can be improved. In addition, although an integrated circuit chip is getting even more integrated, cooling of the integrated circuit chip can be efficiently performed.

Cooling system for integrated circuit chip

The present invention is intended to prevent vibration of a piston while reciprocating the piston without frictional contact by replacing a cross head for preventing the vibration of the piston with a leaf spring fixed by a rod at the lower end of the piston and a cylinder, and applied to a stirling cycle machine.

Growing community of inventors

Seoul, South Korea

Dong-Koo Shin