Abstract: Disclosed are a reciprocating compressor and a refrigerating apparatus having the same, wherein a magnet bearing is inserted between facing surfaces between a cylinder block and a crank shaft and the magnet bearing so as to generate a magnetic force both in a shaft direction and in a radial direction, so that the cylinder block and the crank shaft can be supported both in the shaft direction and in the radial direction, thereby reducing a frictional loss due to an eccentric load of the crank shaft, and also, both magnets are disposed to overlap each other so as to prevent an increase in an input load due to the magnetic force between the magnets, resulting in further improvement of energy efficiency of the compressor.

Abstract: Disclosed are a reciprocating compressor and a refrigerating apparatus having the same, a ball bearing (300) can be easily stably installed between thrust surfaces (213, 227) of a cylinder block (210) and a crank shaft (220) so as to enhance efficiency of the compressor. Also, a ball bearing (300) can be installed by being inserted into thrust surfaces (213, 227) so to shorten a moment arm that much, thereby decreasing a frictional loss at a journal bearing surface (215), resulting in an energy efficiency of the reciprocating compressor and the refrigerating apparatus having the same. In addition, as an oil hole (226c) of the crank shaft (220) is veiled by the journal bearing surface (215) of the cylinder block (210), even if a ball bearing (300) is employed, oil leaked between the thrust surfaces (213, 227) can be reduced, thereby further enhancing the efficiency of the compressor and the refrigerating apparatus having the same.

Abstract: Disclosed are an anti-abrasion device and a reciprocating compressor having the same, whereby a sleeve is fabricated with an outer diameter smaller than an inner diameter of a connecting rod to be non-press-fitted, thereby facilitating an assembly of the sleeve, and also the deformation of an inner diameter of the sleeve is prevented during the assembly of the sleeve, thereby preventing beforehand an increase in an input load of a motor unit due to the deformation of the sleeve and an abrasion of a pin of a crankshaft.

Abstract: The present invention relates to a single phase induction motor, and more particularly, to a single phase induction motor, wherein a variable resistance element which can change a winding number of a main winding or an auxiliary winding capable of producing a magnetic field at the time of starting is connected in parallel to some portion of the main winding or the auxiliary winding. A single phase induction motor including a stator composed of a core, a main winding and an auxiliary winding, and a rotor rotated by a mutual electromagnetic force by the stator comprises a resistance variable element connected in parallel to some portion of the main winding.

Abstract: A compressor having a casing to which a gas suction pipe is connected; a driving motor provided in the casing; a cylinder; a valve supporting plate (210) covering the cylinder (300), the valve supporting plate (210) having a suction hole (212) for sucking gas into the cylinder (300) and two discharge holes (211) for discharging gas compressed in the cylinder (300); a piston (100) having two protrusions (101) at a pressure surface in correspondence to the two discharge holes (211) of the valve supporting plate (210), the protrusions (101) having different sized cross-sections, the piston being linearly reciprocal in the cylinder (300) by receiving a driving force of the driving motor; a suction valve coupled to the valve supporting plate (210) to open and close the suction hole (212); a discharge valve coupled to the valve supporting plate to open and close the two discharge holes (211).

Abstract: A detachable connecting rod includes a first member (410)a large end portion (411) having a trough hole (H1), and a first connection rod portion (412) extending from the large end portion (411), the first connection rod portion (412) having a pair of spaced apart arms defining a coupling groove (413) extending in the same direction as an axial direction of the through hole (H1); a second member (420) including a small end portion having a through hole (H2), and second connection rod portion (422) extending from the small end portion, the second connection rod (422) portion being inserted into the coupling groove (413) and a coupling unit for coupling the first connection rod portion (412) to the second connection rod portion inserted (412) into the coupling groove (413) of the first member (410). The detachable connecting rod is useable in a compressor.

Abstract: A multi-stage compressor is disclosed, which comprises: two motion converters driven by one driving shaft and converting a rotary motion to a straight-line reciprocating motion; first and second pistons (62) connected to one of the motion converters in opposite directions and moving reciprocatively in a straight line; and third and fourth pistons (72) connected to the other one of the motion converters in opposite directions, arranged at a predetermined angle with respect to the first and second pistons (62), and moving reciprocatively in a straight line, and which is characterized in that at least two of the four pistons operate for first-stage compression and at least one of the others operate for second-stage compression.

Abstract: A yoke structure for a compressor is disclosed, which is applied to a scotch yoke type reciprocating compressor. The yoke structure comprises a crankshaft (10); a crankpin (20) connected to the crankshaft (10), to rotate along a predetermined round trajectory which has the crankshaft at its pivot, as the crankshaft rotates; a frame having a pair of slide ways (41) formed on two parallel inner faces of the frame (40) opposing each other, one or more pistons (30) to be fixed to outer faces of the frame outside the slide (41) ways; a sliding block (30) positioned between the pair of slide ways (41) and rotatably connected to the crankpin (20); and a pair of self-lubricating materials (32) attached to the sliding block (30) so as to be in contact with opposing faces of the slide ways (41).

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A glass frit for dielectrics, a dielectric ceramic composition, a multilayer ceramic capacitor, and a method for manufacturing the same are disclosed. The glass frit has a composition represented by the formula aSiO2-bB2O3-cLi2O-dK2O-eCaO-fAl2O3-gTiO2-hZrO2, wherein the ratio of components satisfies the conditions of 20?a?35, 20?b?35, 20?c?30, 3?d?5, 2?e?12, 2?f?10, 1?g?12 and 1?h?7 in terms of mol % where a+b+c+d+e+f+g+h=100. The dielectric ceramic composition comprises 100 parts by weight of (Ca1-xRx)(Zr1-yTiy)O3, 0.5˜2.5 parts by weight of the glass frit, and 1.0˜5.0 parts by weight of a Mn compound. Additionally, the multilayer ceramic capacitor, and the method for manufacturing the same also use the glass frit having the above composition. The ratio of tetracoordinate boron to tricoordinate boron is increased in a lithium borosilicate glass, thereby enhancing structural property, and the components of Al2O3, TiO2 and ZrO2, enhance acid resistance.

Abstract: A refrigeration system comprising: a heat absorption unit (300) for absorbing heat from a peripheral portion to fluid under a predetermined constant pressure; a first compression unit (410) for sucking the fluid discharged from the heat absorption unit (300) and compressing; an intermediate cooling unit (500) for cooling the fluid compressed in the first compression unit (410); a second compression unit (420) for re-compressing the fluid discharged from the intermediate cooling unit (500); a heat radiating unit (100) for radiating heat from the fluid compressed in the second compression unit (420) and discharged to a peripheral portion under a predetermined constant pressure; an expansion unit (200) for lowering pressure of the fluid which passed through the heat radiating unit (100) by an adiabatic expansion and driving the first and second compression units by work generated from the expansion; and a cooling flow path (510) for passing the fluid discharged from the expansion unit (200) through the intermedi

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A multi-stage compressor is disclosed, which comprises: two motion converters driven by one driving shaft and converting a rotary motion to a straight-line reciprocating motion; first and second pistons (62) connected to one of the motion converters in opposite directions and moving reciprocatively in a straight line; and third and fourth pistons (72) connected to the other one of the motion converters in opposite directions, arranged at a predetermined angle with respect to the first and second pistons (62), and moving reciprocatively in a straight line, and which is characterized in that at least two of the four pistons operate for first-stage compression and at least one of the others operate for second-stage compression.