Provided is a fan filter unit with which the performance of a HEPA filter can be measured at multiple points with ease and in a short time. The fan filter unit has a first HEPA filter, a second HEPA filter, and exhaust means installed between the first HEPA filter and the second HEPA filter. The first HEPA filter, the second HEPA filter, and the exhaust means are integrated by a housing.

The present invention provides an air purifier. The air purifier according to one preferred embodiment, of the present invention may comprise: a housing; a blowing unit installed in the housing so as to draw in external air; and a filter unit having filtering surfaces, through which the air passes and which are disposed in multiple directions, and an air inflow space, which has at least a part thereof surrounded by the filtering surfaces disposed in the multiple directions and into which the air discharged from, the blowing unit flows.

The present invention provides an air purifier. The air purifier according to one preferred embodiment, of the present invention may comprise: a housing; a blowing unit installed in the housing so as to draw in external air; and a filter unit having filtering surfaces, through which the air passes and which are disposed in multiple directions, and an air inflow space, which has at least a part thereof surrounded by the filtering surfaces disposed in the multiple directions and into which the air discharged from, the blowing unit flows.

An air filter and air purification technology including a frame encompassing a filter channel and a filter medium across the filter channel. The air filter and air purification technology also include one or more electrical heating components, placed in the filter channel and configured to heat the filter medium and/or air in the filter channel. Thus, the air filter has a heating function, and can heat the filter medium and the air in the filter channel according to actual working conditions and/or operations, so as to prevent moisture in the air from affecting the filtering efficiency of the filter medium. The air filter and air purification technology have the characteristics of enhancing the filtering effects and improving the service life of the filter.

Proposed is a vehicle air conditioner, which performs cooling and heating by supplying cold air and hot air in an interior of the vehicle. The vehicle air conditioner includes an intake unit installed at an engine room and configured to suction and blows internal and external air to the interior, a heat exchanger unit configured to cool or heat and supply air blown from the intake unit, a case cover installed on an outer surface of the intake unit to cover the intake unit, and a case soundproofing member installed between an intake case of the intake unit and the case cover and configured to block noise that is transmitted to the intake case from the outside of the case cover.

As an accessory to smoke or vaporizer devices or integrated into same, or to accompany smokers in general, a personal air filter comprising multiple filter mediums and technologies, and various combinations thereof, including mechanical, chemical and electrostatic principles, is disclosed. The different mediums and components are sequentially incorporated into a compact unit that can fit easily into a user's bag, purse or pocket. Importantly, harmful organic compounds are targeted as well as nanoparticles. An additional feature is that the filter device is easily disassembled to replace and/or reuse inner and outer components.

In one aspect, a modular filter assembly for filtering fluid that flows in a flow direction therethrough is disclosed. The assembly includes a first housing section having a first filter element; a second housing section having a second filter element; and a connector disposed between the first and second housing sections. A housing includes the first housing section, the connector, and the second housing section. The flow direction is through the first and second filter elements in series.

An air conditioner includes: an air blower configured to take air from an inlet, and to blow the air from an outlet; a filter configured to purify the air; a first chamber and a second chamber taking the air purified by the filter; a humidification filter provided in the second chamber, and humidifying the air taken into the second chamber; and a divider opening and closing an opening that provides communication between the first chamber and the second chamber, and adjusting a volume of the air taken from the first chamber into the second chamber. The air taken from the first chamber into the second chamber and/or the air taken into the second chamber is blown from the outlet.

An air conditioner includes: an air blower configured to take air from an inlet, and to blow the air from an outlet; a filter configured to purify the air; a first chamber and a second chamber taking the air purified by the filter; a humidification filter provided in the second chamber, and humidifying the air taken into the second chamber; and a divider opening and closing an opening that provides communication between the first chamber and the second chamber, and adjusting a volume of the air taken from the first chamber into the second chamber. The air taken from the first chamber into the second chamber and/or the air taken into the second chamber is blown from the outlet.

Disclosed are an air intake mechanism and a negative pressure system. The air intake mechanism includes a first air intake end, a first air outlet end, and a first passage provided between the first air intake end and the first air outlet end, a first air driving unit is provided on the first passage, a first filter assembly is provided between the first air intake end and the first air driving unit, and a second filter assembly is provided between the first air outlet end and the first air driving unit.