Abstract: A bitline sense amplifier including: an amplifier which is connected between a first sensing bitline and a second sensing bitline, and detects and amplifies a voltage difference between a first bitline and a second bitline in response to a first control signal and a second control signal; and an equalizer which is connected between a first supply line through which the first control signal is supplied and a second supply line through which the second control signal is supplied, and pre-charges the first bitline and the second bitline with a precharge voltage in response to an equalizing control signal, wherein the equalizer includes an equalizing enable transistor in which a source terminal is connected to the first supply line and performs equalizing in response to the equalizing control signal.

Abstract: Disclosed is a steam turbine capable of reducing the load of a bearing supporting a turbine shaft transmitting rotational driving force of a plurality of nozzle-equipped rotary bodies arranged in multiple stages. The steam turbine includes a housing (110); a turbine shaft (120) pivotably supported by a bearing (121) in the housing; and a plurality of dish-shaped nozzle-equipped rotary bodies (130) integrally combined with the turbine shaft (120), provided with one or more nozzle holes (131) from which working fluid is ejected so that the nozzle rotations bodies (130) can be rotated, and stacked in an axial direction of the turbine shaft (120). The nozzle hole (131) is inclined with respect to a normal direction n of the periphery surface of the nozzle-equipped rotary body (130) and is inclined toward an axial direction c of the turbine shaft (120).

Abstract: The present invention relates to a reactive turbine apparatus that is easy to assemble. To this end, the reactive turbine apparatus includes: a rotation shaft formed of a certain length; a housing defining an inner space so as to be rotatably coupled to the rotation shaft, having an inlet formed through one side thereof through which working fluid can enter, and having an outlet formed through the other side thereof so that working fluid can be discharged to the outside; and at least one rotation unit disposed in the housing and coupled to the rotation shaft, disposed in a lengthwise direction of the rotation shaft, and rotating the rotation shaft by means of the working fluid that enters from the inlet of the housing and is discharged, wherein working fluid is prevented from leaking between the peripheral surface of the at least one rotation unit and the inner surface of the housing during the rotation of the rotation unit.

Abstract: A reaction-type turbine according to the present invention is configured in that a portion of a rotary shaft module which penetrates through a side with an inlet portion of a housing has a diameter larger than the diameters of other portions. Thus, the pressurized area in which a working fluid applies pressure to a rotary shaft in the direction opposite to the working fluid flow direction increases, thus increasing force in the direction opposite to the working fluid flow direction. As a result, axial direction force applied to the rotary shaft in the working fluid flow direction may be reduced. Therefore, the reaction-type turbine of the present invention has the advantages of eliminating the necessity of installing a separate thrust bearing for supporting axial force in the working fluid flow direction.

Abstract: Disclosed herein is a nozzle rotation body for a reaction-type steam turbine, the rotation body rotating by ejection of fluid from the nozzle. The rotation body includes: a disk-shaped body (210) having an shaft hole that is formed in the center thereof and coupled to a rotary shaft; a guide portion (220), projected in the vertical direction and integrally formed with the body (210) to have a guide side (GS) providing a plurality of exhaust flow paths (221) forming equal angles to each other in the helical direction around the shaft hole; a nozzle piece (230), positioned on each front end of the exhaust flow paths (221) and assembled with the body (210), to have a cross section of the same shape as the cross section of the exhaust flow paths (221) and have a narrow width section; and a fastening unit having at least one bolt (241) and at least one assembly pin (242) coupling the nozzle piece (230) and the body (210).

Abstract: A reaction turbine, according to the present invention, includes first and second rotor plates, which are coupled together to form an integrated rotor, and an inner flow path including a combination of first and second flow paths, which are formed on the surfaces of the first and second rotor plates that face each other, respectively, thereby enabling easier manufacturing into a form desired by a designer by eliminating the limitation of a cross-sectional shape of the inner flow path. In addition, a cross section of each of the first and second flow paths can be formed into a semicircular shape thus yielding a circular shape for the inner flow path, which is formed by combining the first and second flow paths, thereby effectively enhancing the performance of a turbine by minimizing pressure loss of a working fluid that passes through the inner flow path.

Abstract: The invention provides a displacement control valve for a variable displacement compressor comprising: a valve housing having a discharge chamber connecting space and a crank chamber connecting space; an electronic solenoid; and a valve body configured to reciprocate within the valve housing the electronic solenoid. The displacement control valve is opened and closed when the valve body moves from the discharge chamber connecting space toward the crank chamber connecting space, making it possible to enlarge a cross-sectional area of the valve body and improving productivity.

Abstract: A reaction-type turbine according to the present invention is configured in that a portion of a rotary shaft module which penetrates through a side with an inlet portion of a housing has a diameter larger than the diameters of other portions. Thus, the pressurized area in which a working fluid applies pressure to a rotary shaft in the direction opposite to the working fluid flow direction increases, thus increasing force in the direction opposite to the working fluid flow direction. As a result, axial direction force applied to the rotary shaft in the working fluid flow direction may be reduced. Therefore, the reaction-type turbine of the present invention has the advantages of eliminating the necessity of installing a separate thrust bearing for supporting axial force in the working fluid flow direction.

Abstract: The present invention relates to a reactive turbine apparatus that is easy to assemble. To this end, the reactive turbine apparatus includes: a rotation shaft formed of a certain length; a housing defining an inner space so as to be rotatably coupled to the rotation shaft, having an inlet formed through one side thereof through which working fluid can enter, and having an outlet formed through the other side thereof so that working fluid can be discharged to the outside; and at least one rotation unit disposed in the housing and coupled to the rotation shaft, disposed in a lengthwise direction of the rotation shaft, and rotating the rotation shaft by means of the working fluid that enters from the inlet of the housing and is discharged, wherein working fluid is prevented from leaking between the peripheral surface of the at least one rotation unit and the inner surface of the housing during the rotation of the rotation unit.

Abstract: An apparatus implements a method for maintaining a voice call in a communication system providing a multi-Radio Access Bearer (RAB). In the method for maintaining a voice call in an electronic device, a data call and a voice call with a wireless network are connected. When an error of the data call is detected, the connection of the data call with the wireless network is released.

Abstract: According to the present invention, a reaction-type turbine includes: a housing including a housing passage between an inlet and an outlet; a turbine shaft rotatably coupled to the housing to transmit torque; and at least one nozzle assembly coupled to the turbine shaft and rotatably provided in the housing passage. The nozzle assembly includes circumferential injection holes therein for injecting a high-pressure fluid in a circumferential direction and generating torque. Accordingly, when turbines having different capacities are manufactured, common parts can be compatibly used and assembling efficiency is improved. In addition, the eccentric rotation of the turbine shaft is prevented to significantly improve the durability of the reaction-type turbine. Furthermore, since the injection holes are long, the reaction-type turbine can be miniaturized and the efficiency thereof is improved.

Abstract: The invention provides a displacement control valve for a variable displacement compressor comprising: a valve housing having a discharge chamber connecting space and a crank chamber connecting space; an electronic solenoid; and a valve body configured to reciprocate within the valve housing the electronic solenoid. The displacement control valve is opened and closed when the valve body moves from the discharge chamber connecting space toward the crank chamber connecting space, making it possible to enlarge a cross-sectional area of the valve body and improving productivity.

Abstract: The present invention provides a displacement control valve for a variable displacement compressor, the displacement control valve including a valve housing, in which a discharge chamber passage and a crank chamber passage are provided, and a valve body for opening and closing the valve, characterized in that a motor rotates the valve body to open and close the valve. Therefore, the present invention can reduce the overall length of the displacement control valve to reduce the size of the compressor, thereby achieving a compact structure of the compressor.

Abstract: A drum washing machine having a foldable door includes a cabinet having an opening formed at a front wall of the cabinet, the foldable door provided at the front wall of the cabinet to open or close the opening, and which is separated into frames that fold when the foldable door is opened, and an opening/closing guide mechanism connected between the foldable door and the cabinet to guide the foldable door when the foldable door is being opened or closed.

Abstract: Disclosed is a scroll compressor enabling a significant height reduction to use a space of a system efficiently when the scroll compressor is applied to such systems as a refrigerator, an air conditioner, and the like. A compressor housing forms an exterior, a crankcase is fixed inside the compressor housing, a boss is formed at a central portion thereof to protrude downward, and a bearing hole is formed in a center thereof. A stator having a hollow shape is fixed to a lower side of the crankcase, and a rotor is provided to maintain a clearance between an outer circumferential surface of the stator and an inner circumferential surface thereof. A crankshaft is provided to pass through the bearing hole and is fixed to the rotor to revolve together with the rotor, wherein an eccentric pin is formed on an upper side thereof. A orbiting scroll is connected to the eccentric pin, and a fixed scroll fixed to an upper side of the crankcase to form a compression chamber together with the orbiting scroll.

Abstract: A discharge valve assembly of fluid machinery is provided. The discharge valve assembly of fluid machinery includes a valve housing connected to a discharge side of a compression chamber, forming a valve holding space for holding a valve, forming a discharge hole on one side of the valve holding space, forming a back current hole in the other side of the valve holding space to be separated from the discharge hole, and fixedly installed in a discharge chamber, and a sliding valve positioned between the discharge side of the compression chamber and the discharge hole of the valve housing so as to open and close the discharge hole while sliding according to the pressure of the compression chamber and the pressure of the discharge chamber and inserted into the valve holding space to slide. The sliding valve completely opens the discharge side of the compression chamber and the discharge hole of the valve housing when compressed refrigerant gas is discharged.

Abstract: Disclosed is a scroll compressor enabling a significant height reduction to use a space of a system efficiently when the scroll compressor is applied to such systems as a refrigerator, an air conditioner, and the like. A compressor housing forms an exterior, a crankcase is fixed inside the compressor housing, a boss is formed at a central portion thereof to protrude downward, and a bearing hole is formed in a center thereof. A stator having a hollow shape is fixed to a lower side of the crankcase, and a rotor is provided to maintain a clearance between an outer circumferential surface of the stator and an inner circumferential surface thereof. A crankshaft is provided to pass through the bearing hole and is fixed to the rotor to revolve together with the rotor, wherein an eccentric pin is formed on an upper side thereof. A orbiting scroll is connected to the eccentric pin, and a fixed scroll fixed to an upper side of the crankcase to form a compression chamber together with the orbiting scroll.

Abstract: A discharge valve assembly of fluid machinery is provided. The discharge valve assembly of fluid machinery includes a valve housing connected to a discharge side of a compression chamber, forming a valve holding space for holding a valve, forming a discharge hole on one side of the valve holding space, forming a back current hole in the other side of the valve holding space to be separated from the discharge hole, and fixedly installed in a discharge chamber, and a sliding valve positioned between the discharge side of the compression chamber and the discharge hole of the valve housing so as to open and close the discharge hole while sliding according to the pressure of the compression chamber and the pressure of the discharge chamber and inserted into the valve holding space to slide. The sliding valve completely opens the discharge side of the compression chamber and the discharge hole of the valve housing when compressed refrigerant gas is discharged.

Abstract: Scroll compressor including wraps of involute curves on opposite surfaces of an orbiting scroll and a fixed scroll engaged to each other, to form a compression chamber as the orbiting scroll orbits with respect to the fixed scroll, wherein each of the wraps on opposite surfaces of the orbiting scroll and the fixed scroll is formed from two or more involute curves each having a base circle and a point of starting different from each other, thereby permitting to secure a larger compression space for a same sized scroll compressor while reliability of the scroll compressor is not made poor, to reduce centrifugal force and noise occurring the orbiting scroll, and improving stability of the orbiting scroll.