An entirely disposable combined antimicrobial filter and flowmeter device for spirometry applications comprises a tubular body, with an inlet end portion, an outlet end portion, and an intermediate portion of enlarged diameter in the form of a discoidal shell. In the discoidal shell both an antimicrobial filtering membrane and a discoidal net of plastic material generating a pressure differential are arranged, it has an outer peripheral edge fixed to an inner annular lip of one of said bell-shaped portions of the discoidal shell, said annular lip being coaxial to said cylindrical wall. One of the filtering membrane and the pressure differential generating network has an outer peripheral edge fixed to the cylindrical wall of the discoidal shell, while the other of the filtering membrane and the pressure differential generating network has an outer peripheral edge fixed to an inner annular lip of one of the bell-shaped portions defining the discoidal shell.

The present invention provides a smart air filter blockage detection and alert communication system for use with filters in air circulation systems such as HVAC, vehicles, server systems, and dryers. The system attached to the frame of a filter comprises a light source, a light sensor, two actuators and a control unit. The control unit based on a stored program or an external command activates the actuators to place the source and the sensor devices attached to the two arms of the actuators on the two sides of the filter membrane. The sensor measures the light intensity transmitted through the filter. The control unit upon receiving the intensity data determines the filter blockage level and communicates alert to the user when the blockage exceeds a predetermined value. The system uses a 4G or a 5G IoT network capability for data collection and communication with servers and user devices.

Aspects of the disclosure provide methods of making a coated filtration material. Various methods include providing a base filter material and applying a first coating to the base filter material, the first coating being in nanoparticle form. A second coating is applied on top of the first coating, the second coating being a nanoscale inorganic material. The method further includes removing the first coating in such a way that the second coating remains on the base filter material. Methods of the disclosure can be used to manufacture coated filtration materials having a coating with a porosity of 90% or greater and a pore size in the range of 0.1-0.5 μm.

The present invention discloses a device for pulverization and explosion suppression of low carbon gas hydrate (LCGH). A feeding chamber connects with a pulverizing chamber, and the chambers communicate through a feed port. A pulverizing air pipe and the feeding chamber communicate through a feeding air pipe; two ends of a venturi connect with an entrainment chamber and a disperser respectively; and a gas-solid separation membrane (GSSM) is disposed on a discharging port and used for preventing LCGH powder from entering the entrainment chamber from the pulverizing chamber. When an explosion is triggered, the GSSM is opened to make the LCGH powder enter the entrainment chamber. The device can store and pulverize the LCGH and spray LCGH powder to achieve combustion and explosion suppression.

A filter baffle assembly, including a filter cap engageable to a mouth of a container, the filter cap including a filter vent operatively attached to a liner situated within an inner space of the filter cap, and a gas permeable baffle disposed between a mouth of the container and the filter vent, covering the filter vent, the baffle including a single perforation to permit gas exchange between an interior of the container and the filter vent, and to protect the filter vent from contact with contents housed in the interior of the container. A gas permeable point baffle for protecting a filter vent from contact with the contents of a container, including a single perforation, the point baffle being welded to a liner and covering a filter vent operatively attached to the liner, housed within a cap engageable to the mouth of the container. A method for protecting a filter vent from the contents of a container.

A breathing mask for being worn on the face includes a filtration mechanism configured to filter out particles having a diameter larger than a first predetermined value; a connecting mechanism; and a removable nano-porous hydrophobic membrane configured to be removably attached to the filtration mechanism with the connecting mechanism. The nano-porous membrane is configured to filter out particles having a diameter larger than a second predetermined value, which is different from the first predetermined value.

Provided is filtration member for use in a filtration device, said filtration member comprising a layer of woven or nonwoven fabric having two primary surfaces and a layer of chemically functionalized graphite flakes deposited on at least one of the two primary surfaces or embedded in the layer of woven or nonwoven fabric, wherein said graphite flakes comprise chemical function contain 1%-50% by weight of a non-carbon element selected from O, N, H, F, Cl, Br, I, or a combination thereof. Also provided is a face mask comprising: (a) a mask body configured to cover at least wearer's mouth and nose; and (b) a fastener to hold the mask in place on the wearer's face; wherein the mask body includes (i) an air-permeable outer layer, (ii) an inner layer located on a wearer's side when the mask is worn, and (iii) the filtration member comprising graphite flakes.

An air conditioner of the present disclosure includes a fan filter unit whose power consumption efficiency determined by the following equation is 600 kWh/(m.sup.2.Math.yr) or less when the fan filter unit is operated in such a manner that blowing efficiency η of a fan is 0.75. In the following equation, Q represents a nominal flow rate (m.sup.3/sec) of an air filter unit, ΔP represents a pressure loss (Pa) of the air filter unit measured when air passes through the air filter unit at the nominal flow rate of the unit, and S represents an opening area (m.sup.2) of the air filter unit. Equation: power consumption efficiency kWh/(m.sup.2.Math.yr)={(Q×ΔP)/(η×1000)}×(24×365)/S. The air conditioner of the present disclosure is suitable for reducing power consumption even when including the air filter unit which is large in size and has high filtration performance. An air filter unit of the present disclosure is suitable for the air conditioner of the present disclosure.

The invention relates to a system for treating hydrogen and/or oxygen gas produced by water electrolysis and serving to supply a combustion process, characterised in that it comprises at least one heat exchanger, in which the one or more gases circulate so as to be cooled or heated, said heat exchanger being submerged in a reactive compound through which the one or more gasses pass in turn.

A microporous membrane for filtering and a method for preparing the same, a flat filtering element and a gas filtering article are disclosed. The microporous membrane is composed of following raw materials in parts by weight: 100-110 parts of polyethylene, 27-30 parts of acrylonitrile, 0.1-0.2 parts of dicumyl peroxide, 2-4 parts of plasticizer, 1-2 parts of antimonous oxide, 0.8-1 part of zinc borate, 1-2 parts of antioxidant, 0.8-2 parts of heat stabilizer, 1-2 parts of octylisothiazolinone, 1-3 parts of calcium propionate, 0.7-2 parts of triglycidyl isocyanurate, 4-6 parts of diacetone alcohol, 0.7-1 part of oleic diethanolamide, 0.5-1 part of sodium myrastate and 1-2 parts of glycolic acid.