4055 results about "Air filtration" patented technology

A mobile, modular, cleanroom facility is made from one or more pre-assembled modules, transportable in their pre-assembled form. Each pre-assembled module includes an air filtration system including a ceiling plenum for providing clean air to the interior of the module. The air filtration system provides air cleaned to at least an ISO 8 classification. When the mobile, modular cleanroom facility is made of two or more modules, each of the modules is pre-assembled, and is transportable in its pre-assembled form. Each of the modules also includes an air filtrations system having a ceiling plenum for providing clean air to the interior of the module. Most preferably, the modules are connected by a connection assembly effective for providing a seamless transition from one module to the other while maintaining the appropriate clean air classification in the transition space.

An air filter device and an operating method thereof. The air filter device comprises an air filter system and a powder distribution system. The air filter system comprises an air filter chamber (1), a clean air chamber (2), and a high-pressure jet pulse powder cleaning device (3). An entrance of the air filter chamber (1) is in communication with an air inlet pipe (4); an exit of the clean air chamber (2) is in communication with an air outlet pipe (6), and the air outlet pipe (6) is in communication with an exhaust fan (9). A plurality of bag filters or filter cartridges (10) are disposed in the air filter chamber (1). An opening end of each of the bag filters or filter cartridges (10) is in communication with the clean air chamber (2), and high-pressure jet pulse powder cleaning devices (3) are disposed above the opening end of the corresponding bag filters or filter cartridges (10). The powder distribution system includes a powder storage tank (13), which is in communication, via a powder delivery tube (15), with the air inlet pipe (4) of the air filter chamber (1). The operating method comprises a first powder distribution step and a second powder distribution step, which are respectively performed according to pressure detection status of the air filter chamber (1).

A filter assembly for use in an air filtration unit, particularly for filtering cooking vapors. The assembly includes a filter disposed across an air flow and a grease pre-filter located upstream of the filter. The grease pre-filter is formed principally from wool fiber having an approximate density of 150-200 g/m2 and a loft of substantially 15-20 mm. The use of such a pre-filter substantially prolongs the service life of the filter before cleaning is required.

The present invention relates to a visual indicating device and an article for controlling odors, in particular foot, garbage, basement, cooking, pet, tobacco, feces and urine odors. The article comprises a visual indicating agent that is color sensitive to the odor, and optionally, an odor absorbing agent. The visual indicating agent changes color when the article has been exposed to a sufficient amount of odor to saturate the article. The indicating agent may be applied in differing concentrations to two or more zones so as to indicate to a user of the article how much of the odor absorbing capacity has been used, or conversely, how much of the odor absorbing capacity remains. Suitable visual indicating agents that change color in response to odors are also described. The article for controlling odors may be a disposable odor absorbing sheet, air freshening product, diaper, undergarment pad, face mask, air filtration device, sanitary napkin, tampon, panty shield or incontinence pad.

A nasal air filtration device includes a pair of either planar or concave-convex filters, a support structure incorporating a pair of generally annular bases or sleeves for supporting the filters, and a bridge that couples the bases or sleeves to maintain them in a desired spaced-apart relation and to determine a desired angular relationship. The support structure is insertable into the nasal cavities to position the filters within corresponding nasal cavities. Flexible rims maintain the support structure and the filters in spaced-apart relation to the surrounding nasal wall. The rims conform to surrounding nasal tissue to form seals. The rims can be selectively inclined to facilitate insertion and resist accidental removal. In certain embodiments the device is combined with a filter that covers the mouth to provide an air filtration system.

The invention relates to an electrospinning nano-fiber electret filtering material and its preparation method. The high-efficiency and low-resistsance nano-fiber electret filtering material having no interfibrous adhesion and having a fluffy three-dimensional netted intercommunication structure is prepared through controlling the component and the temperatures of a polymer solution in an electrospinning process and carrying out one-step forming in the nano-fiber forming rapid cooling process, wherein the gram weight of the above nanofiber layer is 0.01-70g/m<2>, and the porosity is not less than 80%. The surface electrostatic potential of the nano-fiber electret filtering material is 800-6000V, and the surface charges have lasting storage stability, the hydrophobic angle is greater than 150DEG, the filtering efficiency of the material to particles of 0.006-1[mu]m can reach above 99.999%, the piezoresistance is less than 20Pa, and the dust containing capacity is 300-3600g/m<2>. The preparation method is simple, and the filtering material has wide application prospects in the fields of individual protection mouth mask filtration, indoor air purification and filtration, and high efficiency/ultrahigh efficiency air filtration.

A adjustable nasal dilator filter incorporating unique insertable symmetrical loops with electrical and mechanical design features for improving breathing, air filtration, sleep and snoring which is adjustable, self adjusting, re-useable, comfortable, safe, economical and uses no drugs or adhesives. The device consists of two symmetric polymer loops formed by a retaining tube. The, material, size, configuration, and electrical characteristics of these loops was designed to improve nasal air filtration as well as reshape and strengthen the internal nasal breathing passageways in order to provide the stated positive benefits. The interface with the nostrils and combined functionality of this device including the air filtration feature and universal adjustability makes this device unique and superior to prior art.

A vacuum cleaner has cooling air from an agitator motor ported to a working air conduit upstream of an inlet to a fan motor assembly.

The present invention relates to an air filtration system and a method for making a photocatalytic oxidation substrate by powder coating a photocatalyst onto a metal substrate.

An onsite chemistry air filtration system to remove gaseous contaminants from air is disclosed. The onsite chemistry air filtration system of the present invention comprises: a conventional particulate filtration section, a photochemical filtration section, a static gas phase filtration section and a catalytic filtration section. The conventional particulate filtration section captures solids and condensables. In the photochemical filtration section, UV lamps generate bio-destruction and surface photochemical activity on a semiconductor catalyst material, provide a radiation source to irradiate airborne contaminant molecules and to energize their states to promote reactions and generate airborne ozone and radicals. In the static gas phase filtration section, gas phase filtration media is used to capture contaminants, concentrate them in a relatively confined space and allow airborne generated chemistries to concentrate and react in-situ, thereby creating a regeneration effect on the media. In the catalytic filtration section, catalytic media scavenges and converts airborne radicals and ozone to harmless by-products.

The present invention provides an anti-pathogenic air filtration medium comprising a fibrous substrate whose fibers are coated with coating comprising a polymer. The coating provides an environment that is destructive to airborne pathogens. In particular, the filter medium can be used in a building air handling system that both filters the air and eliminates pathogens. The filter medium also can be used to create a new bio-protective gas mask that not only offers protection against chemical warfare agents, but also provides protection against biological pathogens.

An air cleaning unit is provided. The air cleaning unit includes a housing having an air intake and an air outlet. Intermediate the air intake and air outlet is an air filtration medium. Also within the housing is at least one UV-C lamp. The air cleaning unit also includes an odor-reducing medium, such as a photocatalytic oxidation (“PCO”). filter. A method for filtering air using the air cleaning unit is also provided.

The invention relates to an air filtering device, which comprises a primary filter, a secondary filter and a tertiary filter, wherein the primary filter, the secondary filter and the tertiary filter are sequentially arranged in an air inlet passage of a gas-turbine generator set at intervals, and the secondary filter and the tertiary filter are arranged on two mutually spaced filter frames respectively. The filter frames are fixedly mounted in the air inlet passage of the gas-turbine generator set through embedded parts. Therefore, air passing through the air inlet passage of the gas-turbine generator set is bound to sequentially pass through the primary filter, the secondary filter and the tertiary filter, so that filtering precision is improved, and dust-holding capacity is increased. Besides, the filters are convenient in mounting, and the filter frames can be further used for container type generator sets, universality and interchangeability of the air filtering device are enhanced, and production arrangements and manufacturing are facilitated.

The invention is directed to a direct replacement air filtration or handler filter that is placed within an air flow channel within an air handler unit having a housing. A motor in communication with a controller and having an at least one sensor input or a timer or a transceiver and processing module. A filter media storage area is located on one end of the housing, with a pleated, folded filter media folded and compactly stored inside the filter media storage area. An exposed filter media containment area is located on an opposed end within the housing with the filter media extending therebetween. The filter media being paid out or advanced from the filter media storage area across the housing where it is exposed to air within the air flow channel as it removes contaminants from the air. The motor can be activated by said controller in response to input from the at least one sensor or based on a timed input from said timer and rotate an at least one movement member to move the filter media across the exposure area. This allows for higher efficiency operation and reduces maintenance and energy costs. The sensors and communications capability allow for the use of the filter in providing Air Quality Management (AQM). AQM allows the filter to monitor the quality of the air as it passes through the filter and interact with a network system to monitor the air quality at the point of filtration.

The invention discloses a method and a device for controlling new fan filter screen use time as well as a new fan system. The method comprises the following steps: the air pollution degree of a new fan use location in the current time interval is acquired; the conversion factor of the new fan use time is acquired according to the air pollution degree; the conversion running time of the new fan in the current time interval is calculated according to the conversion factor; sum of the conversion running time of the new fan in the current time interval and the conversion already running time of the new fan is obtained, and the total conversion running time of the new fan is acquired; and when the total conversion running time is larger than or equal to filter screen replacement time, a new fan filter screen replacement alarm is given. Calculation of the filter screen use time is combined with the specific use environment of the new fan, the time is accurately calculated, waste caused by early replacement of the filter screen under good air quality condition is avoided, and the problem that use is influenced by poor air filter effect of the new fan due to the fact that the filter screen is not replaced in time in poor use environment is solved.

A mask-type apparatus facilitates air filtration. In accordance with one or more embodiments, a mask includes a shell and a filter coupled to the shell. The shell secures the filter to a user's face, with the filter being between the shell and the user. In some implementations, the filter and shell are secured to one another via a valve that passes air between a user and an environment. With these approaches, the mask-type apparatus readily facilitates replacement of the filter while also providing a secure fitment of the filter to a user's face, for a variety of applications.

The invention discloses a cloud control platform for an intelligent indoor air purification fresh air system based on the Internet of things. The cloud control platform comprises an air filtering device which is mounted on the wall and is communicated with outdoor air, a purification system for purifying indoor air, and a fresh air system which is mounted in an indoor ceiling and is used for exchanging the indoor air with the outdoor air, wherein the fresh air system communicates with the purification system; the purification system adjusts the fresh air system according to the cleanness data of the detected indoor air and uploads processed data to a cloud server through a wireless transmission module. By use of an intelligent control technology, the purification system with detection and automatic control functions is organically combined with the fresh air system with a remote control function, so that remote control is realized, and the air purification quality can be obviously improved within short time; the respective advantages are fully used and supplement each other to realize organic combination.

A stationary plate functions as a vibration damper and has an integrated air filtration guide. In one embodiment the stationary plate is disposed between two adjacent disks, and the guide comprises one or more grooves through which rotation-induced air may flow. In another embodiment, a plurality of stationary plates may be disposed between a plurality of disks, wherein each of the plurality of stationary plates has a grooved side through which the rotation-induced air may flow. In still another embodiment, the orientation of the grooves in the stationary plate is such that the rotationally-induced airflow impinges the disk drive's voice coil motor.