A fluid type, gel/wax/paraffin type, or mechanical type harmonic balancer for built-in or retrofit use with an atomizer of a SDA flue gas desulfurization system for reduced atomizer vibration within or outside of the atomizer's harmonic range is provided herein. Also provided, is a method of using the built-in or retrofit harmonic balancer with an atomizer of a SDA flue gas desulfurization system to decrease atomizer vibration within or outside the atomizer's harmonic range, to increase atomizer on-line service hours, decrease atomizer maintenance requirements, and to decrease atomizer associated costs.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a watering housing disposed inside the water tank, suctioning water of the water tank thereinto, pumping the suctioned water to an upper side when rotating, and spraying the pumped water; a watering motor providing a torque to the watering housing; and a power transmission shaft disposed inside the watering housing, connecting the watering motor and the watering housing, and delivering a torque of the watering motor to the watering housing.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a visual body forming at least a portion of the water tank and formed of a transparent material; a watering housing disposed in the water tank, suctioning water stored in the water tank to pump water to an upper side, and spraying the pumped water; a watering motor rotating the watering housing; and a watering blade formed to outwardly protrude from the watering housing. Here, when the watering housing rotates, the watering blade collides with water droplets within a radius of rotation of the watering blade to scatter water droplets.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a watering housing disposed in the water tank and suctioning water stored in the water tank to spray suctioned water to the outside; a watering motor providing a torque to the watering housing; a pump groove protruding inside the watering housing, suctioning water of the water tank into the watering housing when rotating, and pumping the suctioned water to an upper side of the watering housing; and a nozzle disposed in the watering housing and spraying the upwardly pumped water to the outside of the watering housing.

Provided is an air conditioner. The air conditioner includes a water tank to store water, a visual body disposed over the water tank and formed of a transparent material, a watering housing to draw water stored in the water tank and to spray the drawn water to the visual body, a water level sensor to measure a water level of the water tank in a multi-stage, a top cover assembly disposed over the visual body and having a water supply hole to supply water to the water tank, and a water level display unit disposed beside the water supply hole of the top cover assembly to display a water level measured by the water level sensor in a multi-stage.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a base body from which the water tank is separably disposed; a watering housing disposed inside the water tank and rotating inside the water tank; a watering motor providing a torque to the watering housing; a first coupler coupled to the watering motor; and a second coupler coupled to the watering housing, separably coupled to the first coupler, and delivering a torque of the watering motor to the first coupler when coupled to the first coupler.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a watering housing disposed in the water tank and suctioning water stored in the water tank to spray suctioned water to the outside; a watering motor providing a torque to the watering housing; a watering groove protruding inside the watering housing, suctioning water of the water tank into the watering housing when rotating, and pumping the suctioned water to an upper side of the watering housing; a nozzle disposed in the watering housing and spraying the upwardly pumped water to the outside of the watering housing; and a water curtain preventing rib disposed inside the watering housing, disposed over the watering groove, and mutually interfering with the pumped water.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes a base body including an upper body and a lower body coupled to a lower part of the upper body, a water tank disposed at an upper part of the upper body, storing water, and including a water housing spraying water to the inside, a watering motor installed at the upper body and providing a torque to the watering housing; and a blower motor installed at the lower body. Here, the lower body, the upper body, and the water tank are stacked sequentially. The blower motor, and the watering motor are disposed vertically inside the base body. The watering motor, and the blower motor are spaced a predetermined interval away from each other and disposed on the same axis.

Provided is an air conditioner. The air conditioner includes a water tank to store water, a visual body disposed over the water tank and formed of a transparent material, a watering housing to draw water stored in the water tank and to spray the drawn water to the visual body, a water level sensor to measure a water level of the water tank in a multi-stage, a top cover assembly disposed over the visual body and having a water supply hole to supply water to the water tank, and a water level display unit disposed beside the water supply hole of the top cover assembly to display a water level measured by the water level sensor in a multi-stage.

A fluid type, gel/wax/paraffin type, or mechanical type harmonic balancer for built-in or retrofit use with an atomizer of a SDA flue gas desulfurization system for reduced atomizer vibration within or outside of the atomizer's harmonic range is provided herein. Also provided, is a method of using the built-in or retrofit harmonic balancer with an atomizer of a SDA flue gas desulfurization system to decrease atomizer vibration within or outside the atomizer's harmonic range, to increase atomizer on-line service hours, decrease atomizer maintenance requirements, and to decrease atomizer associated costs.