Within examples, a system to provide filtered air to an enclosure for a passenger of a vehicle is described that includes a collapsible canopy hood attachable to a support structure of a vehicle, and a filter unit mounted to the support structure of the vehicle and having an output coupled to the collapsible canopy hood. The filter unit includes an air filtration component to filter air that is then output to the collapsible canopy hood.

A secondary battery according to the present invention including a battery case with an accommodation part accommodating an electrode assembly and an electrolyte, a fluid inlet/outlet port provided in the battery case to provide a moving passage through which a fluid is movable so that discharge of an inner gas and reinjection of the electrolyte are enabled, a gas discharge part restricting the discharge of the inner gas passing through the fluid inlet/outlet port, and an electrolyte reinjection part provided to reinject the electrolyte through the fluid inlet/outlet port.

A secondary battery according to the present invention including a battery case with an accommodation part accommodating an electrode assembly and an electrolyte, a fluid inlet/outlet port provided in the battery case to provide a moving passage through which a fluid is movable so that discharge of an inner gas and reinjection of the electrolyte are enabled, a gas discharge part restricting the discharge of the inner gas passing through the fluid inlet/outlet port, and an electrolyte reinjection part provided to reinject the electrolyte through the fluid inlet/outlet port.

A method of filtering indoor air pollution for filtering air pollutant in an indoor space is disclosed. A plurality of gas processing devices is provided for detecting and filtering air pollutant, and transmitting device inner gas detection data. A connection device is provided for receiving and transmitting the device inner gas detection data to a cloud processing device. The cloud processing device intelligently compares and selects to drive a closest gas processing device to filter the air pollutant and drive the gas processing devices to determine a convection path and generate at least one airflow . The airflow accelerates the movement of the air pollutant along the convection path to move the air pollutant towards the closest processing device adjacent to the air pollutant for filtering, so that the air pollutant in the indoor space can be filtered rapidly to obtain a clean, safe and breathable air condition.

Provided is an adsorption filter structure, and more specifically, an adsorption filter structure with easy detachment and increased filter efficiency. The adsorption filter structure includes a filtration unit passing external air through an internal space in a filtration direction, and filtering the external air, an external vent and an internal vent, and the helmet to which the adsorption filter structure is applied includes a protection unit into which the adsorption filter structure is interpolated and the external air entrance hole is formed, a neck packing part, a nose cast, and an exhalation port. Accordingly, the helmet, including the adsorption filter structure, is designed to be easily detached without protrusion so that a wearer's field of vision is secured, wherein the adsorption filter structure that is not restricted in actions during work is applied. The adsorption layer, the filtration layer, and the shielding layer are stacked therein so as to exhibit optimal efficiency, and thus the filtration efficiency is increased.

An incubator for cell and tissue culture under controlled atmospheric conditions has a primary air flow control device that forms a primary, preferably laminar flow, air veil across an opening that allows access to the cells or tissue cultures disposed within the incubator. Preferably, most if not all of the air in the primary (laminar flow) air veil is recirculated, and a secondary air flow control device is used that forms a secondary, preferably laminar flow, air veil between the primary (laminar flow) air veil and a user of the incubator.

A base platform with a plurality of platform legs mounted to said base platform for raising said base platform. A bedding tray is carried by said base platform with a plurality of tray legs mounted to said bedding tray raising said bedding tray above said base platform to define an air channel between said base platform and said bedding tray. A blower unit is carried by said base platform with an air duct disposed on a perimeter of said base platform receiving air from said blower unit. An air suction gap is disposed between said air duct and said bedding tray with at least one air discharge port disposed in said air duct directing air into said air channel underneath said bedding tray and drawing air downward through said air suction gap around said bedding tray.

A base platform with a plurality of platform legs mounted to said base platform for raising said base platform. A bedding tray is carried by said base platform with a plurality of tray legs mounted to said bedding tray raising said bedding tray above said base platform to define an air channel between said base platform and said bedding tray. A blower unit is carried by said base platform with an air duct disposed on a perimeter of said base platform receiving air from said blower unit. An air suction gap is disposed between said air duct and said bedding tray with at least one air discharge port disposed in said air duct directing air into said air channel underneath said bedding tray and drawing air downward through said air suction gap around said bedding tray.

The invention relates to a filter arrangement for cleaning an air stream having at least three filter elements, wherein each filter element has a bellows made of pleated filter medium, wherein the filter elements are arranged in series and any two adjacent filter elements are connected to one another by means of a connecting tab. According to the invention, a fold run-out of all end folds of all bellows is oriented in a particular direction, the connecting tabs are of two different embodiments and the different embodiments of the connecting tabs are arranged alternatingly when viewed in a longitudinal direction of the filter arrangement. Not only is a simple installation of the filter elements in a filter holder thus facilitated but also a defined seating of the filter elements in the filter holder is ensured.

The invention relates to a filter arrangement for cleaning an air stream having at least three filter elements, wherein each filter element has a bellows made of pleated filter medium, wherein the filter elements are arranged in series and any two adjacent filter elements are connected to one another by means of a connecting tab. According to the invention, a fold run-out of all end folds of all bellows is oriented in a particular direction, the connecting tabs are of two different embodiments and the different embodiments of the connecting tabs are arranged alternatingly when viewed in a longitudinal direction of the filter arrangement. Not only is a simple installation of the filter elements in a filter holder thus facilitated but also a defined seating of the filter elements in the filter holder is ensured.