Abstract: Disclosed are an operation control device of a compressor, which can reduce motor loss by applying an AC power to a motor of the compressor without a switching operation of a control unit, and a method thereof. The operation control device of the compressor comprises: a capacitor electrically connected to a motor of the compressor and having a predetermined capacitance; a control unit connected in series to the motor of the compressor and applying an AC power to the motor of the compressor according to a control signal; and a controller detecting a load variation amount on the basis of a current and voltage applied to the motor of the compressor and controlling on/off of the control unit according to the detected load variation amount.

Abstract: In an overload protective apparatus of a compressor and its method capable of preventing damage of a compressor due to overload by removing an overload protector and using an operation control device operating the compressor, the overload protective apparatus includes a reference current setting unit for presetting a reference current value for operating the compressor normally; a microcomputer for generating a power cutoff signal when the detected current value is greater than the reference current value and generating a power supply signal when the detected current value is smaller than the reference current value; and a power supply unit for cutting off power applied to the compressor on the basis of the power cutoff signal or applying power to the compressor on the basis of the power supply signal.

Abstract: A driving controlling apparatus of a linear compressor and a method thereof are disclosed, in which a stroke is variably controlled at the time of a compression processing and a suction processing thus to prevent a consumption power decrease and a refrigerating capacity deficiency phenomenon and to enhance a reliability (v.u). A driving controlling method of a linear compressor, wherein a firing angle is respectively applied at the time of a compression processing and a suction processing according to a load state.

Abstract: Disclosed are an operation control device of a compressor, which can reduce motor loss by applying an AC power to a motor of the compressor without a switching operation of a control unit, and a method thereof. The operation control device of the compressor comprises: a capacitor electrically connected to a motor of the compressor and having a predetermined capacitance; a control unit connected in series to the motor of the compressor and applying an AC power to the motor of the compressor according to a control signal; and a controller detecting a load variation amount on the basis of a current and voltage applied to the motor of the compressor and controlling on/off of the control unit according to the detected load variation amount.

Abstract: A driving controlling apparatus of a linear compressor and a method thereof are disclosed, in which a stroke is variably controlled at the time of a compression processing and a suction processing thus to prevent a consumption power decrease and a refrigerating capacity deficiency phenomenon and to enhance a reliability (v.u). A driving controlling method of a linear compressor, wherein a firing angle is respectively applied at the time of a compression processing and a suction processing according to a load state.

Abstract: In an operation control apparatus and a method thereof, the compressor can be protected from overloading through a current control device instead of an OLP (Over Load Protector) and a PTC thermistor (Positive Temperature Coefficient thermistor). The operation control apparatus includes: a stroke estimated unit for estimating a stroke of the compressor on the basis of a current and a voltage applied to an interior motor of the compressor and a motor constant of the interior motor; a control unit for generating a control signal for varying a stroke of the compressor on the basis of the estimated stroke value and a preset stroke reference value; and a current control means being turned on/off so as to vary a stroke voltage applied to the interior motor of the compressor.

Abstract: A reciprocating compressor comprises an inside stator formed by piling a plurality of stator cores to have an actinomorphic cylinder shape, which is press-fitted to a frame, and a streak protection member and a burr shielding ring installed between the inner aspect of the inside stator and corresponding outer aspect of the frame. Thereby the burr generating between the frame and the inner stator by a streak is prevented previously, and even if a burr is generated, this burr is locked in a burr escape unit in the burr-shielding ring. Therefore degrading of valve function and an abrasion of a sliding unit in a compressing unit by the burr generating is prevented and the vibration noise of the compressor is reduced by assembling the frame and the inside stator strongly.

Abstract: In an overload protective apparatus of a compressor and its method capable of preventing damage of a compressor due to overload by removing an overload protector and using an operation control device operating the compressor, the overload protective apparatus includes a reference current setting unit for presetting a reference current value for operating the compressor normally; a microcomputer for generating a power cutoff signal when the detected current value is greater than the reference current value and generating a power supply signal when the detected current value is smaller than the reference current value; and a power supply unit for cutting off power applied to the compressor on the basis of the power cutoff signal or applying power to the compressor on the basis of the power supply signal.

Abstract: A reciprocating compressor includes: a reciprocating motor, an outer stator and an inner stator provided with at least one step portion at both sides thereof, and an armature linearly moving therebetween; a compression unit having a cylinder and a piston inserted in the cylinder to receive a linear and reciprocal driving force of the reciprocating motor and compress a gas; a suction unit sucking a gas into the compression unit; a discharge unit discharging the gas compressed in the compression unit to outside the container; a resonance spring unit elastically supporting the piston and the armature; and a frame unit supporting the compression unit and the reciprocating motor. Because stable driving is achieved in its operation, generation of vibration and noise can be minimized, heightening reliability. In addition, the amount of gas discharge can be accurately controlled.

Abstract: A reciprocating compressor including: a closed container (10); a reciprocating motor (20) having stators and an armature (22) disposed in the air gap between the stators (21) and making a reciprocal movement; a compression unit (30) having a piston (31) combined with the armature (22) of the reciprocating motor and a cylinder fixed inside the closed container (10); a spring unit (50) elastically supporting the armature (22) of the reciprocating motor (20) in a movement direction; and a frame unit (100) supporting the reciprocating motor (20) and the compression unit (30) having a gas hole (111) at a suitable portion thereof. Accordingly, when the armature (22) of the reciprocating motor (20) makes a reciprocal movement, the gas is compressed at the end of the armature (22), so that an increase of a flow resistance is prevented.

Abstract: A reciprocating motor for a reciprocating type compressor includes a bobbin having a coil wound inside thereof, a terminal formed at one side of the bobbin, for electrically connecting the coil and an external circuit, a core part at which a plurality of lamination sheets are radially stacked in a circumferential direction centering around the bobbin, and a fixing part for fixing at least one lamination sheet at the inner side of the core part. With this construction, the lamination sheets making the core part is prevented from vibrating and the collision between the lamination sheets and the terminal is prevented, so that when the motor operates, its noise is reduced and reliability of the operation of the motor is heightened.

Abstract: A piston support structure for a reciprocating compressor is provided that includes a piston receiving a linear reciprocating driving power generated by a reciprocating motor. The piston is in a compression space formed in a cylinder and a first resonant spring and a second resonant spring are positioned on both sides of the piston. The first resonant spring and the second resonant spring elastically support the linear reciprocating motion of the piston. The spring constant of the second resonant spring opposite to the first resonant spring is larger than the spring constant of the first resonant spring positioned on the side of the compression space of the cylinder. Accordingly, the stress concentration of the second resonant springs for elastically supporting the piston is reduced. Accordingly, it is possible to prevent the fatigue of the second resonant springs and to extend the durability of the resonant springs.

Abstract: A reciprocating compressor comprises an inside stator formed by piling a plurality of stator cores to have an actinomorphic cylinder shape, which is press-fitted to a frame, and a streak protection member and a burr shielding ring installed between the inner aspect of the inside stator and corresponding outer aspect of the frame. Thereby the burr generating between the frame and the inner stator by a streak is prevented previously, and even if a burr is generated, this burr is locked in a burr escape unit in the burr-shielding ring. Therefore degrading of valve function and an abrasion of a sliding unit in a compressing unit by the burr generating is prevented and the vibration noise of the compressor is reduced by assembling the frame and the inside stator strongly.

Abstract: A reciprocating compressor includes: a reciprocating motor installed in the container and having an outer stator and an inner stator provided with at least one step portion at both sides thereof, and an armature linearly moving therebetween; a compression unit having a cylinder and a piston inserted in the cylinder to receive a linear and reciprocal driving force of the reciprocating motor and compress a gas while making a linear and reciprocal movement; a suction unit sucking a gas sucked into the container through the gas suction pipe due to a pressure difference in the compression unit, into the compression unit; a discharge unit discharging the gas compressed in the compression unit to outside the container; a resonance spring unit elastically supporting the piston and the armature; and a frame unit supporting the compression unit and the reciprocating motor. Since the stable driving is made in its operating, generation of a vibration and a noise can be minimized, heightening a reliability.

Abstract: A reciprocating compressor including: a closed container (10); a reciprocating motor (20) having stators and an armature (22) disposed in the air gap between the stators (21) and making a reciprocal movement; a compression unit (30) having a piston (31) combined with the armature (22) of the reciprocating motor and a cylinder fixed inside the closed container (10); a spring unit (50) elastically supporting the armature (22) of the reciprocating motor (20) in a movement direction; and a frame unit (100) supporting the reciprocating motor (20) and the compression unit (30) having a gas hole (111) at a suitable portion thereof. Accordingly, when the armature (22) of the reciprocating motor (20) makes a reciprocal movement, the gas is compressed at the end of the armature (22), so that an increase of a flow resistance is prevented.

Abstract: A piston support structure of a reciprocating compressor is provided. In the piston support structure, including a piston receiving linear reciprocating driving power generated by a reciprocating motor and being in a linear reciprocating motion in a compression space formed in a cylinder and a first resonant spring and a second resonant spring positioned on both sides of the piston, the first resonant spring and the second resonant spring for elastically supporting the linear reciprocating motion of the piston, the spring constant of the second resonant spring opposite to the first resonant spring is larger than the spring constant of the first resonant spring positioned on the side of the compression space of the cylinder. In the process of the piston being in the linear reciprocating motion between the top dead center and the bottom dead center of the compression space formed in the cylinder, the stress concentration of the second resonant springs for elastically supporting the piston is reduced.

Abstract: A reciprocating motor for a reciprocating type compressor includes a bobbin having a coil wound inside thereof, a terminal formed at one side of the bobbin, for electrically connecting the coil and an external circuit, a core part at which a plurality of lamination sheets are radially stacked in a circumferential direction centering around the bobbin, and a fixing part for fixing at least one lamination sheet at the inner side of the core part. With this construction, the lamination sheets making the core part is prevented from vibrating and the collision between the lamination sheets and the terminal is prevented, so that when the motor operates, its noise is reduced and reliability of the operation of the motor is heightened.

Abstract: A refrigerator includes a fresh food compartment, a freezer compartment defined by inner walls and an outer case respectively, an insulation barrier separating the compartments, and doors for providing access to the compartments. A passageway is formed in the barrier for providing refrigerated air to the fresh food compartment. A connecting duct diverges from the passageway and extends forwardly towards the front portion of the fresh food compartment. A door duct communicating with the connecting duct when the door is closed is coupled to the door. As a result, the fresh food compartment and door-adjacent portions of the fresh food compartment are promptly and uniformly cooled.