The present disclosure relates to a portable air purifier and the fan module provided therin. In the disclosed invention, the portable air purifier includes a fan module that is disposed between a discharge surface and a filter, and suctions air having passed through the filter, in an axial direction, and discharges the air in a direction between the axial direction and a radial direction.

The present disclosure relates to a portable air purifier and the fan module provided therin. In the disclosed invention, the portable air purifier includes a fan module that is disposed between a discharge surface and a filter, and suctions air having passed through the filter, in an axial direction, and discharges the air in a direction between the axial direction and a radial direction.

Methods and systems described perform air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system by detecting a concentration of airborne contaminants in a space serviced by the HVACR system. The detected concentration of airborne contaminants is determined whether it exceeds a threshold relative to a capacity of a first air cleaner. When the detected concentration of airborne contaminants exceeds the threshold, a second air cleaner is selected and enabled to be activated in the space. When the detected concentration of airborne contaminants does not exceed the threshold, the first air cleaner is selected and enabled to be activated in the space. The first air cleaner has a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, treats the space at a lower concentration of airborne contaminants. The second air cleaner includes specifically designed cleaner modules.

A ventilation system is provided, the ventilation system comprising at least one air flow generating device, the at least one air flow generating device having a calibrated speed to produce a downward air flow capable of forcing a cloud of infectious bacterial, viral or pathogen particles or droplets out of an ingestion zone of a mouth, a nose and eyes of an individual, at least one ultraviolet C light lamp positioned proximate at least one wall of an area in a pathway of an infected air flow, the infected air flow containing the cloud of infectious bacterial, viral or pathogen particles or droplets, an ultraviolet C radiation field created by the at least one ultraviolet C light lamp, the ultraviolet C radiation field extending throughout the area from the at least one wall near a ceiling of the area and the infected air flow containing the cloud of infectious bacterial, viral or pathogen particles or droplets passing through the ultraviolet C radiation field, wherein the at least one air flow generating device is positioned to enable an upward air flow return to the at least one air flow generating device to force the infected air flow and the cloud of infectious bacterial, viral or pathogen particles or droplets out of an area and through the ultraviolet C radiation field to eradicate the infectious bacteria, virus and pathogens from the infected air flow, and wherein a fresh air flow free of infectious bacteria, viruses and pathogens is reintroduced back into the area by the downward air flow of the at least one air flow generating device.

In a state where an operator performs operation using a safety cabinet while confirming standard operating procedures and sample data, a display device such as a monitor screen provided in the safety cabinet is arranged at a position that is not subject to effects of deterioration due to diffused reflection of light from a fluorescent lamp or sterilization lamp irradiation, and that does not generate resistance in an airflow path, while also protecting the display device from decontamination operation and preventing dirt from being adhered to a portion related to display. Transparent windows are provided on both a portion of a back wall or a side wall of a work space in the safety cabinet and a portion of a rear wall or a side wall of the body of the safety cabinet separated from the back wall or the side wall of the work space by a circulation flow path, which allow the operator to see through both walls, and the display device is placed on an outer side portion of the transparent window provided at the portion of the rear wall or the side wall of the body of the safety cabinet.

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.

A system for monitoring FFUs in each of clean rooms includes a first exhaust fan disposed above the clean rooms; lines each having one end connected to the FFUs in each clean room and the other end connected to a gateway; a personal computer communicating with the gateway; gas removal units disposed under the clean rooms and connected to a second exhaust fan; an emergency damper connected to the second exhaust fan; a CO.sub.2 cylinders room disposed besides the emergency damper; and gas detectors, each communicating with the FFUs via the line, each gas detector having a connector connected to the gateway.

A plasma purification module is described. The plasma purification module includes a first electrode plate, a second electrode plate, at least one long electrode and a catchment element. The first electrode plate is configured to be connected to a first electrode of a power supply. The second electrode plate is disposed over a surface of the first electrode plate, and is configured to be connected to a second electrode of the power supply, in which the second electrode plate has a channel. The long electrode is configured to form a discharge area. The long electrode is disposed on the surface of the first electrode plate and passes through the channel. The long electrode has a tip. The catchment element is disposed adjacent to the tip, and is configured to provide the discharge area with mist or water.

A sterilization air conditioner is provided in this disclosure, which includes an indoor unit and a sterilization device. The sterilization device is arranged on the indoor unit, and the sterilization device is configured for sterilizing the air entering the indoor unit and a body of the indoor unit by releasing chemical or physical media. In view of a structure of the air conditioner, a front end of a filter screen of the air conditioner is equipped with a disinfectant dripping, drenching, sprinkling, spraying or atomizing or a plasma or ultraviolet or electrostatic negative oxygen ion sterilization device, and disinfectant or plasma or ultraviolet or negative oxygen ion is sprayed to the air conditioner for sterilization. The disclosure has advantages of simplicity, convenience and low investment, and is more suitable for sterilization of household split air conditioners and central air-conditioning fan-coil air conditioners.

A sterilization air conditioner is provided in this disclosure, which includes an indoor unit and a sterilization device. The sterilization device is arranged on the indoor unit, and the sterilization device is configured for sterilizing the air entering the indoor unit and a body of the indoor unit by releasing chemical or physical media. In view of a structure of the air conditioner, a front end of a filter screen of the air conditioner is equipped with a disinfectant dripping, drenching, sprinkling, spraying or atomizing or a plasma or ultraviolet or electrostatic negative oxygen ion sterilization device, and disinfectant or plasma or ultraviolet or negative oxygen ion is sprayed to the air conditioner for sterilization. The disclosure has advantages of simplicity, convenience and low investment, and is more suitable for sterilization of household split air conditioners and central air-conditioning fan-coil air conditioners.