摘要:
A cyclonic cleaner which includes a cyclone unit enabling a reduction of noise generated from the cyclone unit, and reduction in pressure loss by forming a smooth air flow. The cyclone unit includes a body having an air inlet and an air outlet, a primary cyclone to primarily separate foreign matter from air drawn through the air inlet, a plurality of secondary cyclones to secondarily separate foreign matter from air discharged from the primary cyclone and to discharge the air having the foreign matter removed therefrom through discharge holes of the secondary cyclones, and a noise reduction member positioned in the discharge hole of each secondary cyclone to reduce noise. The cyclone unit also includes a guide plate to allow the air discharged through the discharge holes of the secondary cyclones to be smoothly discharged through the air outlet.
摘要:
A vacuum cleaner has a discharge flow path and a discharged-air filter optimally positioned to reduce noise. The vacuum cleaner includes a body, a dust collection unit positioned in the body to filter foreign matter, a blower fan unit including a blower fan and a motor to generate suction force, an air vent through which air drawn into the body is discharged, and a discharge flow path to guide the air discharged through a discharge port of the blower fan unit to the air vent. The discharge flow path comprises a space defined between the dust collection unit and the blower fan unit.
摘要:
A vacuum cleaner having a discharge flow path, which reduces noise generated due to resistance of the flow path, and by a motor. The vacuum cleaner includes a body, a blower fan unit including a blower fan and a motor to generate suction force in the body, an inner case surrounding the blower fan unit and having an inner flow path formed therein, an outer case surrounding the inner case, and a discharge flow path formed between the inner case and the outer case to communicate with the inner flow path. The discharge flow path including a circulation flow path branched from the inner flow path to guide air discharged from the blower fan unit, and a bent flow path branched from the inner flow path to guide the air discharged from the blower fan unit, the air is thereby bent a number of times in the bent flow path.
摘要:
A cyclone vacuum cleaner including a plurality of cyclone chambers arranged in a group. The cyclone chambers are configured such that frequency characteristics of noises generated from respective cyclone chambers are different from each other.
摘要:
A single-phase induction motor and a method for reducing noise in the same, which can eliminate unbalance between magnetomotive forces of main and auxiliary windings in a stator of the motor, thereby implementing a low noise, low vibration motor, and can also achieve balance between the magnetomotive forces of the stator windings in the entire running range of the motor, and can further achieve balance between the magnetomotive forces of the stator windings on the basis of temperature increase of the motor as it runs. The amplitude of a main-winding current flowing through the main winding in the stator is controlled to be equal to the amplitude of an auxiliary-winding current flowing through the auxiliary winding in the stator, and the phase difference between the main-winding and auxiliary-winding currents is controlled to be maintained at a predetermined value.
摘要:
A cyclone cleaner that enables noise frequencies generated in a plurality of cyclone chambers to be different from one another, thereby preventing noise from overlapping at a specific frequency bandwidth, and therefore, reducing noise. The cyclonic cleaner includes a suction unit, a cyclonic separating apparatus, and a blowing unit. The cyclonic separating apparatus includes a housing, a plurality of cyclone chambers disposed in the housing in the circumferential direction thereof, and a plurality of partitions disposed between the respective cyclone chambers to mount the cyclone chambers in a plurality of individual divided spaces, respectively. The partitions are arranged such that angles between the respective adjacent pairs of partitions are different from one another. Also, the partitions are arranged such that the intervals between the respective partitions are different from one another, and the divided spaces have different capacities.
摘要:
The present invention relates to a method for controlling handoff of a mobile terminal, and more specifically, to a method for controlling handoff of a mobile terminal in an IEEE 802.22 wireless regional area network (WRAN) communication standard for defining communication of a fixed terminal which uses a frequency band that is not regionally used among television broadcasting frequency bands.
摘要:
Provided is a nanowire manufacturing method, comprising forming a plurality of grid patterns on a substrate, forming a nanowire on the grid patterns, and separating the grid pattern and the nanowire. According to the present invention, the width and height of the nanowire can be adjusted by controlling the wet-etching process time period, and the nanowire can be manufactured at a room temperature at low cost, the nanowire can be mass-manufactured and the nanowire with regularity can be manufactured even in case of mass production.
摘要:
A data modulation method and a data error correction method are provided. The data modulation method includes generating a channel sequence for an input sequence, determining whether or not the channel sequence violates a Run Length Limit (RLL) constraint, and performing, when the channel sequence violates the RLL constraint, bit flip at a position prior to a position at which the RLL constraint is violated among positions of bits included in the channel sequence. The data error correction method includes detecting an error bit of received data using a parity check matrix, determining whether or not the error bit is an error caused by bit flip, and correcting the error bit when the error bit is an error caused by bit flip for applying an RLL constraint.
摘要:
The present invention relates to a treatment agent for diabetic complications, and a method for the treatment of diabetic complications using the same. The present invention confirmed that Osteomeles schwerinae extract and its fractions inhibited the generation of AGEs, the index for diabetic complications, inhibited the activation of aldose reductase, had anti-cataract activity, and had anti-oxidative activity. Thus, the present invention relates to a preventive and therapeutic agent for diabetic complications containing the said Osteomeles schwerinae extract and its fraction as an active ingredient.