A humidification and air cleaning apparatus is provided that may include a water tank having a discharge port which is open toward an upper side, and a discharge grill disposed at the water tank and covering the discharge port. The discharge grill may have a plurality of vanes disposed at the discharge port and spaced apart from each other, and when viewed from a top, overlap each other to cover the discharge port. An edge of a vane may overlap an edge of an adjacent vane, thereby minimizing scattering of droplets to an indoor space while minimizing resistance of discharged air.

In order to provide a dust-containing gas treatment apparatus which can smoothly achieve the treatment of gas containing dust of high concentration, the apparatus is equipped with a cylindrical treatment room 1 to introduce gas containing dust and remove the dust from the gas, catcher 2 consisting of brush with the hair 22 planted in the support 21 installed in the treatment room 1 to catch the dust contained in the gas, liquid spraying mechanism 3 installed in the treatment room 1, rotary driving mechanism 6 to rotate the catcher 2 and stirrer 4, gas introducing portion 7 to introduce the gas containing dust, gas discharging portion 8 to discharge the gas, the dust removed, from the treatment room 1 and liquid discharging portion 9 to discharge the liquid containing the dust removed from the gas.

In order to provide a dust-containing gas treatment apparatus which can smoothly achieve the treatment of gas containing dust of high concentration, the apparatus is equipped with a cylindrical treatment room 1 to introduce gas containing dust and remove the dust from the gas, catcher 2 consisting of brush with the hair 22 planted in the support 21 installed in the treatment room 1 to catch the dust contained in the gas, liquid spraying mechanism 3 installed in the treatment room 1, rotary driving mechanism 6 to rotate the catcher 2 and stirrer 4, gas introducing portion 7 to introduce the gas containing dust, gas discharging portion 8 to discharge the gas, the dust removed, from the treatment room 1 and liquid discharging portion 9 to discharge the liquid containing the dust removed from the gas.

An air filter for a heating, ventilation and air conditioning, HVAC, system, the air filter comprising: a housing having an inlet opening and an outlet opening, configured for air to flow along an air flow route between the inlet opening and the outlet opening; a supply spool and a take-up spool mounted to the housing on opposite sides of the air flow route; one or more filter guides mounted to the housing between the supply spool and the take-up spool; a strip of filter medium extending from the supply spool to the take-up spool via the one or more filter guides, with a portion of the filter medium extending across the air flow route; and a driver arranged to advance the filter medium to change the portion of the filter medium extending across the airflow route. Air filtration systems, HVAC devices and HVAC systems comprising the air filter.

The air sterilization device with heating apparatus comprises a mainframe, a sterilization system, a heating system, circuits and a control system and a housing. The sterilization system includes an ultraviolet sterilization apparatus to sterilize and disinfect air; the heating system heats the air to inactivate virus; and the housing has an air inlet and an air outlet. Air can circulate into the housing through the air inlet with the action of mainframe and then the air is discharged from the air outlet into a room after the disinfection and sterilization processes are finished. The device with heating apparatus aims at the secondary inactivation of viruses by high temperature after the sterilization and disinfection processes are finished by ultraviolet sterilization apparatus and heating system, and at the decomposition of ozone produced in the process of ultraviolet disinfection to eliminate secondary air pollution by ozone.

The air sterilization device with heating apparatus comprises a mainframe, a sterilization system, a heating system, circuits and a control system and a housing. The sterilization system includes an ultraviolet sterilization apparatus to sterilize and disinfect air; the heating system heats the air to inactivate virus; and the housing has an air inlet and an air outlet. Air can circulate into the housing through the air inlet with the action of mainframe and then the air is discharged from the air outlet into a room after the disinfection and sterilization processes are finished. The device with heating apparatus aims at the secondary inactivation of viruses by high temperature after the sterilization and disinfection processes are finished by ultraviolet sterilization apparatus and heating system, and at the decomposition of ozone produced in the process of ultraviolet disinfection to eliminate secondary air pollution by ozone.

A hybrid humidity control and air purification device and method for hybrid humidity control and air purification. The hybrid device is a single unit capable of humidifying dry environmental air, dehumidifying humid environmental air and removing particulates and contaminants from the air. The device controls the outgoing air to a relative humidity setpoint between 35-50% with negligible particulate matter content. Particulate matter is transferred to water, which may be supplied and flushed by an automatic water pumping system.

A humidification and air cleaning apparatus is provided, in which a first sweep angle and a second sweep angle are formed at diffuser blades, and an included angle is formed between the first sweep angle and the second sweep angle, such that a phase difference is formed in air passing through the diffuser blades, and thus, air flow noise may be reduced.

A hybrid humidity control and air purification device and method for hybrid humidity control and air purification. The hybrid device is a single unit capable of humidifying dry environmental air, dehumidifying humid environmental air and removing particulates and contaminants from the air. The device controls the outgoing air to a relative humidity setpoint between 35-50% with negligible particulate matter content. Particulate matter is transferred to water, which may be supplied and flushed by an automatic water pumping system.

A hybrid humidity control and air purification device and method for hybrid humidity control and air purification. The hybrid device is a single unit capable of humidifying dry environmental air, dehumidifying humid environmental air and removing particulates and contaminants from the air. The device controls the outgoing air to a relative humidity setpoint between 35-50% with negligible particulate matter content. Particulate matter is transferred to water, which may be supplied and flushed by an automatic water pumping system.