Abstract: The present invention relates to a supercooling method and a supercooling apparatus which can maintain an object in a supercooled state. According to the present invention, a supercooling method includes a first cooling step of cooling a stored object toward a cooling temperature below a phase transition temperature thereof, a step of judging whether the stored object is released from a supercooled state in the first cooling step, a step of thawing the stored object when the stored object is released from the supercooled state, and a second cooling step of cooling the stored object toward a cooling temperature below zero that is higher than the lowest temperature of the stored object before the release of the supercooled state, wherein the first cooling step is continuously performed when the object is maintained in the supercooled state.

Abstract: A scroll-type compressor includes a compression unit, a main frame supporting the compression unit, and a driving shaft having an oil supply path. The oil supply path is located eccentrically with the driving shaft and an upper part of the driving shaft is supported by the main frame. The compressor also has a motor for rotating the driving shaft, an oil cap located on an upper side of a rotor of the motor, and a balance member to compensate the driving shaft.

Abstract: The present invention discloses an apparatus for supercooling and a method of operating the same which can solve supercooling release of a supercooled space and prevent external exposure of energy such as an electric field. The apparatus for supercooling includes a space cooled by cool air, for maintaining an inside object in a supercooled state by supply of energy preventing the object from being converted into a solid phase, a sensing unit for sensing supercooling release of the space or the object, and a heater engaged with the sensing unit, for applying heat to the space or the object.

Abstract: A hermetic compressor is provided, including a casing, having a suction pipe and discharge pipe connected thereto, a driving motor installed within the casing, a compressing device installed within the casing and operated by the driving motor to form compression chambers, an oil separator that separates oil from a refrigerant discharged from by compressing device, and an oil collecting pipe through which the oil separator communicates with the compression chambers. With this structure, oil can be appropriately supplied to one or more compressors based on capacity, thus improving reliability of oil distribution and enhancing compressor performance.

Abstract: A fuel cell system comprises: a DBFC for generating a power by receiving a fuel; a PEMFC for generating a power by receiving hydrogen, a byproduct generated at an anode of the DBFC after a reaction, as a fuel; a supplementary power partially charged by a power generated at the DBFC and the PEMFC and discharging the charged power; a load sensing unit for sensing a load connected to the DBFC, the PEMFC, and the supplementary power; and a control unit for controlling a power of the DBFC, the PEMFC, and the supplementary power according to a load sensed by the load sensing unit and thereby selectively supplying to the load. According to this, hydrogen generated at the DBFC is recycled, and a load amount is sensed thus to stably correspond to a load variation, thereby maximizing a fuel usage efficiency and stably driving the system.

Abstract: A scroll compressor and a refrigerating machine including the same are provided. In the scroll compressor, an oil supply hole formed in an orbiting scroll guides oil from a space between a frame and the orbiting scroll to a space between a fixed scroll and the orbiting scroll, and an oil supply groove formed at the fixed scroll maintains communication with the oil supply hole, thereby rapidly supplying oil to a bearing surface between the fixed scroll and the orbiting scroll before the oil is introduced into a back pressure chamber. This enhances compressor efficiency by effectively preventing frictional losses and refrigerant leakage in such a compressor, and enhances energy efficiency for a refrigerating machine using such a compressor.

Abstract: A scroll compressor and a refrigerating machine including the scroll compressor are provided. An oil supply channel may be formed in a fixed scroll of the compressor so as to provide for communication between a back pressure chamber and compression chambers formed between the fixed scroll and an orbiting scroll. The oil supply channel enables oil to be smoothly introduced from the back pressure chamber into each compression chamber, so that frictional losses and refrigerant leakage in the compression chambers may be effectively prevented, and efficiency of the compressor and the refrigerating machine including the compressor may be enhanced.

Abstract: A fuel cell system comprises: a fuel storage means for storing a fuel; a direct borohydride fuel cell (DBFC); a fuel circulation supply means for circulation and supplying a fuel to an anode of the DBFC from the fuel storage means; a polymer electrolyte membrane fuel cell (PEMFC) for receiving hydrogen generated at the anode of the DBFC as a fuel; a hydrogen control means for controlling hydrogen generated from the anode of the DBFC in correspondence to an amount required by the PEMFC and thereby supplying the hydrogen to the PEMFC; and an air supply means for supplying air to a cathode of the DBFC and an cathode of the PEMFC.

Abstract: A rotor of a compressor includes a stack having a plurality of symmetrical flux barriers and gaseous refrigerant passages formed at sides of the flux barriers, a pair of end covers mounted on the upper and lower sides of the stack, and an oil scattering prevention device installed in the gaseous refrigerant passages and having prevention plates for preventing oil, passing through the gaseous passages, from entering gaps of the stack and from leaking out of the stack the stack due to the centrifugal force.

Abstract: Disclosed herein is an oil supply structure of a scroll compressor. The oil supply structure is provided to prevent a slender hole of an oil supply screw from being clogged with sludge, the oil supply screw being provided between a backpressure space, which is defined between an orbiting scroll and a main frame, and a space which is defined between a fixed scroll and the main frame, and adapted to supply oil from the backpressure space into the space. The oil supply screw includes an orifice having a center hole longitudinally perforated through the center of an upper portion of a screw body of the oil supply screw and a slender hole continuously perforated below the center hole to have the same axis as that of the center hole, and a sludge discharger having a non-flat-plane configuration and formed at a lower entrance end of the screw body.

Abstract: The present invention discloses an ice maker including an ice tray (51) for containing water and making ice, and at least one energy generator (54) disposed to supply energy to at least one of the water contained in the ice tray and the ice made in the ice tray, and a method of making ice.

Abstract: The present invention discloses a refrigerator including a liquid, cool air supplied to supercool the liquid, and a preventing means for preventing the liquid from existing as a solid phase, and a method of operating the refrigerator. The preventing means is at least one of an energy generator for supplying energy to the liquid supplied with the cool air to maintain the liquid in the supercooled state, a restricting member for interrupting the motion of the liquid, and a heater for converting the liquid converted into a solid phase into the liquid.

Abstract: Disclosed is a variable capacity scroll compressor in which a high-pressure fluid within a thermodynamic cycle is introduced into the inside of the compressor to increase the compression volume and also the fluid inhaled/exhausted from the compressor allows the fluid being compressed to be bypassed in multi-stages, thereby varying the capacity of the compression fluid.

Abstract: The present invention discloses an apparatus and method for supercooling which can stably maintain the contents in a supercooled state for an extended period of time by controlling energy. The apparatus for supercooling includes a means for taking energy from the contents, and a means for causing at least one of rotation, vibration and translation to water molecules of the contents, by supplying energy smaller than the taken energy. The contents arc maintained in a liquid state below a phase transition temperature.

Abstract: The present invention discloses a refrigerator which can keep the contents in a non-frozen state by an electric field generated by a radio frequency voltage. The refrigerator includes a setting unit for setting a amplitude and frequency of a voltage, a generating unit for generating an electric field according to the voltage having the set amplitude and frequency, and applying the electric field to a storing space for storing the contents, and a freezing cycle for cooling the storing space. The contents are kept in a non-frozen state below a phase transition temperature.

Abstract: A compressor is provided that includes a casing defining an inner space, a suction pipe connected to the casing, a discharge pipe connected to the casing, a motor located at the inner space of the casing, a compressing unit driven by the motor to compress a refrigerant, an oil separating unit configured to separate oil from the refrigerant discharged from the compressing unit, and an oil recollecting unit configured to pump the oil separated by the oil separating unit and recollect the separated oil into the compressor main body.

Abstract: 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.

Abstract: A scroll compressor including an oil separator is provided. The oil separator may be provided with a rotor or a shaft of a driving motor of the compressor so that refrigerant gas and oil discharged from a compression chamber may be separated by a centrifugal force. The oil separator may include a plurality of oil separation holes formed in an eccentric mass and a rotor. Rotation of the shaft/rotor and subsequent rotation of the eccentric mass generates a centrifugal force, causing separation of oil from refrigerant gas contained in the oil separation holes. Accordingly, oil is maintained in the casing, and is prevented from being discharged out of the compressor, thus preventing abrasion due to oil deficiency and a degradation in reliability of the compressor. Furthermore, oil is prevented from being discharged to a refrigerating system externally coupled to the compressor, thereby enhancing performance of the refrigerating system.

Abstract: 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.

Abstract: 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.