An air filter and a method of air filtration using the air filter are described. The air filter may comprise a filter media adapted to capture and filter one or more impurities from air. Further, one or more sound wave generators are attached at one or more sides of the filter media. The one or more sound wave generators generate acoustic waves to be propagated into the filter media. The air filter may further comprise a plurality of sensors positioned before the filter media and after the filter media. Further at least one fan is positioned before or after the filter media. Further an IoT is configured to control frequency of the acoustic waves generated by the one or more sound waves generators, and interconnected with power signal control panel parallel, AHU to control rotational speed of the at least one fan based on value provided by the plurality of sensors.

An air filter and a method of air filtration using the air filter are described. The air filter may comprise a filter media adapted to capture and filter one or more impurities from air. Further, one or more sound wave generators are attached at one or more sides of the filter media. The one or more sound wave generators generate acoustic waves to be propagated into the filter media. The air filter may further comprise a plurality of sensors positioned before the filter media and after the filter media. Further at least one fan is positioned before or after the filter media. Further an IoT is configured to control frequency of the acoustic waves generated by the one or more sound waves generators, and interconnected with power signal control panel parallel, AHU to control rotational speed of the at least one fan based on value provided by the plurality of sensors.

An indoor unit for an air-conditioning apparatus includes a cartridge provided to an air inlet so as to be freely mountable and dismountable. The cartridge accommodates a filter so as to be freely movable in a right-and-left direction and has an opening port formed in one end portion in the right-and-left direction. A dust box is provided on a side of the end portion of the cartridge. The dust box includes a cleaning mechanism configured to clean the filter and a dust collecting portion configured to collect dust.

An air purifier includes a housing, a first blower, a second blower, and a filter. The housing has a cavity inside, an inlet and an outlet. The first blower has a first fan in the housing. The second blower has a second fan in the housing. The second blower faces the first blower in an opposing direction. The inlet is located between the first blower and the second blower in the opposing direction. The inlet opens in a direction intersecting the opposing direction. The first fan of the first blower and the second fan of the second blower generate airflow such that air flows into the cavity through the inlet, and flows from the cavity through the filter to the outlet.

An air purifier has an air filter including: a filter member including a plurality of filtration regions each having a plurality of vertical pleats extending in an up-down direction and side surfaces connected to be rotatable with respect to each other; and a frame having a plurality of supports for supporting the plurality of filtration regions. Each of the plurality of supports includes a groove having a shape corresponding to any one of an upper edge and a lower edge of each of the filtration regions. Each of the filtration regions is supported by the supports by at least a part of the upper edge or the lower edge being inserted into the groove.

An air purifier has an air filter including: a filter member including a plurality of filtration regions each having a plurality of vertical pleats extending in an up-down direction and side surfaces connected to be rotatable with respect to each other; and a frame having a plurality of supports for supporting the plurality of filtration regions. Each of the plurality of supports includes a groove having a shape corresponding to any one of an upper edge and a lower edge of each of the filtration regions. Each of the filtration regions is supported by the supports by at least a part of the upper edge or the lower edge being inserted into the groove.

A hazardous gas purification device with a built-in purification system is disclosed. The disclosed present invention is characterized in that it comprises a body case provided with an intake port for sucking hazardous gas on the upper side, provided with an exhaust port for discharging purified air to the outside on the lower side, and provided with an accommodating part provided between the intake port and the exhaust port on the inside; a pre-filter for filtering out large particles of dust and foreign substances contained in the hazardous gas introduced through the intake port; and a modular purification system, in a state of being installed in the accommodating part, for sterilizing viruses while filtering hazardous substances and fine particulate foreign substances contained in the hazardous gas introduced through the intake port, wherein the purification system consists of a three-dimensional filter for three-dimensionally filtering volatile organic compounds contained in the hazardous gas passed through the pre-filter from four directions; a pressure-feed fan, in a state of being disposed below the three-dimensional filter, for sucking hazardous gas through the intake port and forcibly discharging purified air through the exhaust port; a UV lamp disposed below the pressure-feed fan and for irradiating the pressure-feed fan and the hazardous gas with ultraviolet rays to sterilize harmful viruses; a HEPA filter disposed below the UV lamp and for filtering fine particles in the hazardous gas that is not filtered by the pre-filter; and a flat plate filter disposed below the HEPA filter and for filtering the remaining amount of volatile organic compounds that are not filtered by the three-dimensional filter.

A hazardous gas purification device with a built-in purification system is disclosed. The disclosed present invention is characterized in that it comprises a body case provided with an intake port for sucking hazardous gas on the upper side, provided with an exhaust port for discharging purified air to the outside on the lower side, and provided with an accommodating part provided between the intake port and the exhaust port on the inside; a pre-filter for filtering out large particles of dust and foreign substances contained in the hazardous gas introduced through the intake port; and a modular purification system, in a state of being installed in the accommodating part, for sterilizing viruses while filtering hazardous substances and fine particulate foreign substances contained in the hazardous gas introduced through the intake port, wherein the purification system consists of a three-dimensional filter for three-dimensionally filtering volatile organic compounds contained in the hazardous gas passed through the pre-filter from four directions; a pressure-feed fan, in a state of being disposed below the three-dimensional filter, for sucking hazardous gas through the intake port and forcibly discharging purified air through the exhaust port; a UV lamp disposed below the pressure-feed fan and for irradiating the pressure-feed fan and the hazardous gas with ultraviolet rays to sterilize harmful viruses; a HEPA filter disposed below the UV lamp and for filtering fine particles in the hazardous gas that is not filtered by the pre-filter; and a flat plate filter disposed below the HEPA filter and for filtering the remaining amount of volatile organic compounds that are not filtered by the three-dimensional filter.

An air conditioner for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The blower is disposed in the main body to guide air convection and generate a flow-guiding path. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean the air pollution source in the air guided by the blower. The gas detection module is disposed in the flow-guiding path of the main body to detect the air pollution source and transmit a gas detection data.

An air conditioner for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The blower is disposed in the main body to guide air convection and generate a flow-guiding path. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean the air pollution source in the air guided by the blower. The gas detection module is disposed in the flow-guiding path of the main body to detect the air pollution source and transmit a gas detection data.