Abstract: A refrigerator and a control method of the same are disclosed. A refrigerator includes a plurality of evaporators and a refrigerant path conversion device connected with the plurality of the evaporates, the refrigerant path conversion device controlling a path of refrigerant to perform defrosting operations for predetermined evaporators and cooling operations for the other evaporators.

Abstract: A vacuum cleaner set includes a vacuum cleaner and a cleaner mount. The vacuum cleaner includes a main body that is detachably mounted on a mount having a cord reel, a motor and a battery that are provided in the main body, an AC power source that is provided in the main body and connected to a power outlet by the cord reel, a charging device receiving power from the AC power source and charging the battery, and a control unit selecting one of power output from the battery and power output from the AC power source.

Abstract: An air guide apparatus includes a body installed at a discharge side of a rotary fan for sucking air, a plurality of first vanes arranged at one surface of the body to guide air sucked by the rotary fan toward the outer circumferential surface of the body, and a plurality of second vanes arranged on the other side of the body to guide air which has been guided by the first vanes from the outer circumferential surface of the body toward a central portion, formed in a spiral shape from the central portion of the body toward the outer circumferential surface of the body, and having disconnected portions formed at middle portions thereof.

Abstract: A cleaner that can automatically respond to a change in an AC voltage and a voltage of a battery. In the motor, a motor for rotating a collecting fan is driven by a motor driver. The motor driver drives the motor using a voltage from a voltage selector. The voltage selector switches between a low-level voltage of the battery and a high-level voltage derived from the AC voltage to be supplied to the motor driver.

Abstract: A refrigerator is provided, including a refrigerator body having first and second cooling chambers formed therein, partitioned by a barrier wall, an evaporator provided within the barrier wall, a first cooling fan disposed at one side of the evaporator to blow cooling air into the first cooling chamber, and a second cooling fan provided at the other side of the evaporator to blow cooling air to the second cooling chamber. First and second suction openings are formed at upper and lower surfaces of the barrier wall, respectively, such that air drawn into the barrier wall through the first and second suction openings are brought into contact with different regions of the evaporator and is not mixed, so that the first and second cooling chambers may be separately or simultaneously cooled to appropriate temperatures.

Abstract: A refrigerator having a refrigerator body including a first cooling chamber and a second cooling chamber, a barrier wall located between the first cooling chamber and the second cooling chamber, an evaporator configured to provide cooling air, a first cooling fan configured to provide cooling air of the evaporator to the first cooling chamber, and a second cooling fan configured to provide cooling air of the evaporator to the second cooling chamber is provided. A method of providing cooling air flow in a refrigerator is also provided.

Abstract: Disclosed are a bearing housing, and a motor assembly and a vacuum cleaner having the same. The motor assembly includes: a motor housing; a motor installed in the motor housing, for supplying suction force; an impeller rotatably installed on a rotation shaft of the motor; an impeller cover coupled to the motor housing, for covering the impeller; a guide vane installed between the motor and the impeller, and composed of a plurality of diffuser vanes for converting some of dynamic pressure of the air passing through the impeller into static pressure, and a plurality of return vanes formed on the bottom surfaces of the diffuser vanes, for forming passages for guiding the air with its pressure raised by the diffuser vanes to the motor side; and a bearing housing including a passage formation unit for forming passages by contacting the bottom ends of the return vanes, and a shaft support unit for supporting the rotation shaft of the motor.

Abstract: A cleaner that can have the sufficient capability of collecting pollutant particles by a battery voltage as well as a AC voltage. The cleaner uses a switched reluctance motor to rotate a collecting fan. The switched reluctance motor is driven by a motor driver in one of a PWM mode or a pulse trigger mode. The motor driver drives the switched reluctance motor using one of the battery voltage and a DC voltage converted from the AC voltage, depending on whether the AC voltage is received. The PWM mode and the trigger mode are switched depending on whether the AC voltage is received. Accordingly, the cleaner makes it possible to reduce the time taken to clean up pollutant particles using the battery voltage to the time taken to clean up the pollutant particles using the AC voltage.

Abstract: A refrigerator and a control method of the same are disclosed. A refrigerator includes a plurality of evaporators and a refrigerant path conversion device connected with the plurality of the evaporates, the refrigerant path conversion device controlling a path of refrigerant to perform defrosting operations for predetermined evaporators and cooling operations for the other evaporators.

Abstract: A refrigerator is provided. The refrigerator may include a freezing chamber positioned under a refrigerating chamber. A refrigerating chamber fan and a freezing chamber fan may be provided at a refrigerating chamber duct and a freezing chamber duct, respectively, and a damper may selectively open and close the refrigerating chamber duct. By controlling the refrigerating chamber fan, the freezing chamber fan and the damper, cold air may be selectively supplied to the refrigerating chamber and/or the freezing chamber based on individual cooling needs as appropriate.

Abstract: A vacuum cleaner set includes a vacuum cleaner and a cleaner mount. The vacuum cleaner includes a main body that is detachably mounted on a mount having a cord reel, a motor and a battery that are provided in the main body, an AC power source that is provided in the main body and connected to a power outlet by the cord reel, a charging device receiving power from the AC power source and charging the battery, and a control unit selecting one of power output from the battery and power output from the AC power source.

Abstract: A cleaner that can have the sufficient capability of collecting pollutant particles by a battery voltage as well as a AC voltage. The cleaner uses a switched reluctance motor to rotate a collecting fan. The switched reluctance motor is driven by a motor driver in one of a PWM mode or a pulse trigger mode. The motor driver drives the switched reluctance motor using one of the battery voltage and a DC voltage converted from the AC voltage, depending on whether the AC voltage is received. The PWM mode and the trigger mode are switched depending on whether the AC voltage is received. Accordingly, the cleaner makes it possible to reduce the time taken to clean up pollutant particles using the battery voltage to the time taken to clean up the pollutant particles using the AC voltage.

Abstract: A cleaner that can automatically respond to a change in an AC voltage and a voltage of a battery. In the motor, a motor for rotating a collecting fan is driven by a motor driver. The motor driver drives the motor using a voltage from a voltage selector. The voltage selector switches between a low-level voltage of the battery and a high-level voltage derived from the AC voltage to be supplied to the motor driver.

Abstract: Disclosed are a bearing housing, and a motor assembly and a vacuum cleaner having the same. The motor assembly includes: a motor housing; a motor installed in the motor housing, for supplying suction force; an impeller rotatably installed on a rotation shaft of the motor; an impeller cover coupled to the motor housing, for covering the impeller; a guide vane installed between the motor and the impeller, and composed of a plurality of diffuser vanes for converting some of dynamic pressure of the air passing through the impeller into static pressure, and a plurality of return vanes formed on the bottom surfaces of the diffuser vanes, for forming passages for guiding the air with its pressure raised by the diffuser vanes to the motor side; and a bearing housing including a passage formation unit for forming passages by contacting the bottom ends of the return vanes, and a shaft support unit for supporting the rotation shaft of the motor.