An air treatment device includes: a treater configured to capture a toxic substance contained in target air; a regenerator configured to remove the toxic substance from the treater; a detector configured to detect an index correlated with a concentration of the toxic substance contained in room air; and a control unit configured to control the regenerator according to a detection value detected by the detector.

A ventilation type air cleaner includes a housing having a central rotating shaft including a purification part, a washing part, and a sterilization part in a circumferential direction with respect to the central rotating shaft, a rotating unit installed to be rotatable about the central rotating shaft as a rotation center in the housing, a filter assembly detachably coupled to the rotating unit and configured to sequentially pass through the purification part, the washing part, and the sterilization part according to rotation of the rotating unit, an intake duct connected to the housing and configured to guide a flow of air introduced to the purification part, and an exhaust duct connected to the housing and configured to guide a flow of air discharged from the purification part.

The disclosure relates to a heat transfer assembly for a rotary regenerative heat exchanger. The assembly includes a rotor arranged between at least two separated fluid flow passages passing flow axially through the rotor, where each flow passage is connected to a sector part of the rotor. The assembly further includes a plurality of channels in the rotor for flowing a fluid through the rotor, each of the channels is enclosed by heat transfer and heat accumulating surfaces in the rotor, and the heat transfer and heat accumulating surfaces of the channels are made in a material providing an average axial thermal conductivity less than 100 W/mK arranged to reduce the Longitudinal Heat Conductivity of the rotor.

The present invention generally discloses desiccant dehumidifiers control systems. In particular, the present invention relates to solid desiccant dehumidifiers which use a rotor (commonly called a wheel) to dehumidify a process airstream. The invention provides a novel apparatus for control of desiccant dehumidifiers and to an improved method of control of such dehumidifiers, and also to dehumidifiers provided with such control systems.

A heat transfer sheet assembly for a rotary regenerative heat exchanger has first and second heat transfer sheet elements stacked one against the other with a first repeat of a first profile on one sheet element opposing a second repeat of a second profile on the other sheet element. The sheet elements are spaced apart by a plurality of wide-gauged parallel sheet spacing features of the first profile repeat RI of the second profile repeat to form a generally close sided elongate channel for gaseous flow therethrough. The second profile of repeat includes an elongate fifth sheet spacing feature in the form of a lobe contacting undulations of the adjacent first profile of repeat.

There is provided a dehumidifying device for dew point temperature adjustment that adjusts a dew point temperature of air to a temperature of about −20° C. or lower, the device including an adjusting unit that adjusts a dew point temperature by adjusting at least one driving operation that is selected from a rotational frequency of a supply fan for supplying air into the dehumidifying device for dew point temperature adjustment, a rotating speed of a dehumidifying rotor, an opening degree of a blow-out air volume adjustment damper, a rotational frequency of an exhaust fan for exhausting air, and an opening degree of an exhaust air volume adjustment damper.

An air handling unit includes an air treatment unit for treating at least a part of the fresh air via a treatment that gives rise to a pressure drop as well as a mixing damper for controlling air flow between a return air pat, and a supply air path for allowing recycling of air from a return air inlet to a supply air outlet. A supply fan sensor is used for measuring a parameter associated with air flow across the supply fan. An air treatment unit sensor is used for measuring a pressure drop across the air treatment unit in the supply air path. The air handling unit has a control system in order to determine the rate of fresh air flow, as well as optionally other control functions.

A humidifying unit that humidifies a target space includes: a casing including a first ventilation path through which air introduced from outside flows, and a second ventilation path through which air introduced from the outside flows; a moisture adsorbing material that adsorbs moisture in the air flowing through the first ventilation path, releases the moisture to the air flowing through the second ventilation path, and humidifies the air flowing through the second ventilation path; and a heater disposed in the casing and that heats the moisture adsorbing material, or the air flowing through the second ventilation path before humidification. At least a part of the casing is exposed to the target space.

An air treatment unit (100) arranged for an intake of a first flow (110) of air into a space (120) in communication with the air treatment unit, and arranged for a discharge of a second flow (130) of air from the space. The air treatment unit comprises a heat-exchanging unit (140) arranged for thermal exchange between the second flow of air and the first flow of air, and a catalyst (150) configured to capture at least one impurity of the first flow of air. The catalyst is provided on at least a portion (160) of the heat-exchanging unit arranged to come into contact with the first flow of air during operation of the air treatment unit.

A ventilation type air cleaner includes a housing having a central rotating shaft including a purification part, a washing part, and a sterilization part in a circumferential direction with respect to the central rotating shaft, a rotating unit installed to be rotatable about the central rotating shaft as a rotation center in the housing, a filter assembly detachably coupled to the rotating unit and configured to sequentially pass through the purification part, the washing part, and the sterilization part according to rotation of the rotating unit, an intake duct connected to the housing and configured to guide a flow of air introduced to the purification part, and an exhaust duct connected to the housing and configured to guide a flow of air discharged from the purification part.