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Innovation 2024: Oil and aerosol mist separator sopra1

ASPUR air solutions — Fri, 26 Jan 2024 08:00:00 GMT

Innovation 2024: Oil mist separator sopra1 attachment dev

Expansion of the aerog stationary oil mist separator product portfolio

Oil and aerosol mist separators for machining centers

ASPUR air solutions launches the sopra series of oil and aerosol mist separators as an attachment device, with new top-mounted filters for machining centers, lathes and milling machines. These extend and complement the product portfolio of the "aerog" series of stationary oil mist separators.

Baureige sopra oil mist separators are equipped with medium-pressure EC motors that work in continuous operation and still have sufficient power reserves even when the filters are heavily contaminated. The filter system consists of a 3-layer filter system for excellent separation performance with integrated HEPA H13 quality, designed for continuous operation.

All filters in ASPUR appliances and systems are equipped with filter systems that can be replaced without tools.

Integrated, large doors allow optimum access to all areas of the units.

ASPUR air solutions
26.01.2024

Innovation 2024: Stationary extraction system ASPUR centravac

ASPUR air solutions — Fri, 12 Jan 2024 08:00:00 GMT

Innovation 2024: Stationary extraction system centravac

Powerful extraction system for industrial use with pipe network

Stationary extraction systems are used to suck up or extract dust, chips and other process materials from machines and work areas via pipe networks and convey them to a central disposal point.

The central extraction system is connected to a high-pressure pipeline that extends to the previously defined work areas. This can extend over several hundred meters and several floors. Flaps with limit switches are installed at the extraction points, which start the extraction system when they are opened.

Several flaps can be opened simultaneously. The extraction capacity should be the same at every point in the system. The control cabinet with integrated frequency converter controls the side channel blower and automatically adjusts the speed to the operating point.

In this project realized by aspur, a total of 200 m of piping with 23 suction points were installed on 3 floors. Each of the suction points is equipped with an aspur damper and integrated sensor. In addition, a gate valve is installed at the end of each branch line, which opens when the suction flaps are closed. The suction system has an integrated overrun to flush the pipeline.

The filter unit of the stationary system is equipped with a rotary valve and a BigBag mounted underneath. The advantage of this system is the automatic and continuous discharge of the material into the BigBag as soon as the system is in operation.

Integrated cartridge filters of filter class M can be removed without tools and service-friendly through an access door.

The filters can be cleaned manually, differential pressure-controlled or time-controlled during operation. The JETPULSE compressed air tank is located above the filter housing and is built into the device. The system can also be optionally equipped with fire and/or explosion protection systems.

Blechexpo 2023: The ASPUR team was there in Stuttgart

ASPUR air solutions — Thu, 07 Dec 2023 08:00:00 GMT

Blechexpo 2023: We were there!

International trade fair for sheet metal working in Stuttgart

The international trade fair for sheet metal working took place from November 7-11 in Stuttgart and we were there as an exhibitor. As a young, innovative family business, we presented ourselves at this trade fair for the first time this year and introduced our new product range.

Our stationary dust extractor aero3eco plugin and storage filter airsorb2 with utility model as well as our latest product, the dust extractor aero3 mobile with 2 x 360° swiveling extraction arms and integrated automatic filter cleaning were representative of our wide product range of filter technology systems.

Did you miss the trade fair and us? No problem! Just give us a call. We will be happy to advise you and show you the right extraction technology for you.

Our exhibited products

(Brief description, special features)

Storagefilter airsorb2

Our mobile 'Storagefilter airsorb2' is characterized by a wide range of applications. Depending on requirements, various filter and disposal options can be used, including an H14 filter element, activated carbon filter, fog drain filter for oil mist and aerosol mist, demister filter as a droplet pre-separator or spark extinguisher, an F9 pre-filter element, G4 coarse filter for sticky substances, an F9 filter box with closure for low-dust disposal, or alternatively a filter bag or metal collection container. The special feature here is the simple and tool-free filter change. This patented system automatically positions and seals the main filters and enables simple, easily accessible filter replacement.

Thanks to the use of these versatile variants, the appliance can be used for extracting gases, fumes, dust, chips, oils or emulsions as well as other applications.

Other special features are the clear, minimalist design and the high-quality, industrial-grade equipment features.

Go to productdetails

Deduster aero3eco plugin

The stationary 'Deduster aero3eco plugin' is very compact thanks to the integrated 3 kW plugin motor. With a maximum volume flow of 4000 m³/h, the device can extract at several suction points, such as robot welding cells or welding workstations, at the same time. The dust extractor also has a very clean design and is therefore easy to clean.

In addition, the devices are equipped with large access doors installed on both sides and are therefore very easy to access. The filters can be changed without tools and from 2 sides of the unit.

Go to productdetails

Deduster aero3 mobile

The new mobile 'Deduster aero3 mobile' has been developed for extracting dust and fumes from welding and laser applications, for example, and is equipped with horizontal filter cartridges that can be replaced with minimal dust and without tools. The cartridges are cleaned automatically during operation. The process dust is collected in a collection container with an inserted block bottom bag. The special feature is the simple (patented) pull-out system of the container, which is simply pulled out through drawers. After emptying and inserting a new bag, the drawer is pushed shut and the collection container is automatically locked and sealed to the hopper.

The appliance can be equipped with various EC motors or centrifugal fans. A pipe or up to two large 360° rotatable extraction arms can be fitted on the suction side. High-quality and stable industrial castors allow the appliance to be moved and locked securely. All appliances are equipped with very high-quality components.

The illustration of the new product on our homepage will be published in the next few weeks.

Go to productdetails

ASPUR air solutions
07.12.2023

New product 2023: Wet vacuum cleaner fire departments

ASPUR air solutions — Fri, 22 Sep 2023 07:00:00 GMT

New product 2023: Wet vacuum cleaner for fire departments

State-of-the-art electric pump suction for continuous use in hazardous areas (fire and explosion protection areas)

Pump vacuum cleaner for hazardous areas (suitable for continuous use)

To date, compressed air-powered industrial vacuum cleaners have been used to clean leaks in Ex zones. In order to operate these, large compressed air tanks often have to be used. The duration of use of these devices is comparatively short, so that the leaks cannot be completely absorbed.

In close cooperation with a company fire department, ASPUR air solutions has developed an electrically operated pump vacuum cleaner that can be used continuously in hazardous areas like fire and explosion protection areas.

Both the suction and pumping out of liquids take place automatically. In addition, this device is equipped with a multi-stage filter to separate gases and odors; an integrated level limiter prevents unwanted overfilling.

The collection container with integrated pump can be easily decoupled and cleaned after use. In addition, this device has an integrated dead man's brake to secure the device even on sloping terrain.

ASPUR air solutions
22.09.2023

Our new project: C. & E. Fein GmbH in Bargau

ASPUR air solutions — Thu, 06 Jul 2023 07:00:00 GMT

New customer project: C. & E. Fein GmbH in Bargau

Customized solution for the extraction of process media in the new production hall

Fein is a German company based in Bargau, Baden-Württemberg. The company is a well-known manufacturer of high-quality, electric

hand tools and offers a wide range of products for professional use. Fein was founded in 1867 and over the years has earned an excellent reputation for its innovative and reliable products.

Project

In a new production hall, different processing machines and manufacturing processes were now implemented, which release various emissions. Due to its extensive expertise in the development and manufacture of industrial extraction and filter technology, ASPUR air solutions was contracted to supply three different filter systems.

In order to extract and filter chips with dust, oil mist as well as vapors and gases, the device types aero4eco, aerog4 and airsorb3 developed by aspur are used as stationary, central extraction systems. The production machines were connected to the extraction systems via widely ramified piping networks. aero4eco with an extraction capacity of 6000m³/h is a stationary extraction or dedusting system, which is equipped with the most modern motor, filter and control technology. For example, all filters can be changed without tools. The dual-door-system developed by aspur allows a service technician a quick access from two sides of the plant via full-surface access doors.

The oil mist and aerosol separator aerog4 impresses with its filter system, which consists of multi-stage filter cartridges and thus achieves a filter quality of HEPA- H13. Even the finest particles are separated on the self-draining filters, so that the exhaust air can be returned to the production halls.

Aero4 and aerog4 are designed in a modular system, so that later modifications and further adaptations of filter or discharge systems can be made. The mobile (or stationary) device airsorb3 in ATEX design is a storage filter that adsorbs vapors and gases. The device series, which is protected by a utility model, also enables filter replacement of two filters placed on top of each other without the need for tools. After opening the access door, the filter holder, similar to a drawer, in which the H14 pre-filter and HEPA filter are inserted, is pulled out. The filters can now be easily removed and replaced. In addition, the device is equipped with activated carbon filters that adsorb gases and or odors that arise. Thus, this system, like all of the ASPUR systems and devices, is suitable for returning the exhaust air to the production rooms.

The control systems of all three plants and units are equipped with filter monitors, frequency converters and a Modbus system, so that the plants can also be controlled and monitored from the customer's machine control systems.

Customer comment C. & E. Fein GmbH:

"Already in the pre-planning phase, aspur integrated itself into this project in an above-average way and independently offered suitable solutions to our requirements. This commitment, in combination with guaranteed delivery times and product quality, made our decision easier. Another plus point is the regional proximity. Cooperation with local partners is always important to C. und E. Fein GmbH is always important."

ASPUR air solutions

22.06.2023

Innovation 2023: Pinpoint extraction at a milling center

ASPUR air solutions — Thu, 23 Mar 2023 08:00:00 GMT

Innovation 2023: KSS oil mist extraction on duplex rigid board milling machines

Customized solution with pinpoint extraction of process media at a milling center

In industrial extraction technology, we talk about pinpoint extraction when emissions are captured directly at the source. It is the most efficient method and therefore crucial for effective separation of process media, especially in the case of dust, oil mist, steam or smoke. However, with automated manufacturing, there are ever-increasing challenges for implementing pinpoint extraction.

An example of this is the extraction of oil mist from the most modern duplex rigid board milling machines with a travel distance of approx. 20 meters. ASPUR has developed a mobile collection system which enables pinpoint extraction of the resulting aerosols. Two oil mist separators, each with an air volume of 10000 m³/h, are connected to the machines by an extraction duct (here, for example, installed at a height of 2.5 m). An extraction hood adapted to the machine captures the rising oil mist and guides it into the extraction duct with the aid of an extraction slide. The carriage is mounted free-running on the channel and is carried along by the movable milling gantries.

By using the latest filter technology, a separation efficiency of 99.995 % is achieved. The cleaned air and the separated oil are returned to the hall or to the machine in an energy-efficient way.

ASPUR air solutions

23.03.2023

Innovation 2022: Storagefilter ASPUR airsorb4

ASPUR air solutions — Wed, 02 Nov 2022 08:00:00 GMT

Innovation 2022: Storagefilter ASPUR airsorb4

Our latest and most powerful model

Storage filters of the ASPUR airsorb assembly have been developed to extract and safely separate gases*, fumes, odors and low-particle dusts in the manufacturing industry. In addition, these units can also be optimally used for the extraction of aerosols and oil mists (model with Fogdrain filter).

*) only with Activated Carbon filter

Our newest model ASPUR airsorb4 is the most powerful one and has a max. air flow rate of 6000 m³/h and has following special features:

ASPUR-MODULAR-DESIGN - Structure in modular assemblies, enables extensive variety of variants
ASPUR-DOOR-SYSTEM - Large doors for barrier-free access
ASPUR-NOISE-ELIMINATOR - With reduced noise level due to highly efficient sound insulation
ASPUR-EASY-FILTERCHANGE - Simple, tool-free filter change

The main filter system consists of an F9 filter (standard model) or Fogdrain filter (fd model) and H14 filter or H14 filter with integrated coalescence filter and can be very easily pulled out from final position. The user-friendly drawer system, developed by us for this purpose, is protected as an utility model. The filters can be completely extended and removed or replaced from the holder. After the filter has been inserted, they are brought into the end position and sealed automatically.

OPTIONALE EXPANSIONSN

Due to the modular design, HEPA filters, activated carbon filters, demister filters, G4 filters, F9 filters, fog drain filters, filter bags as well as various discharge systems can be added according to the customer's individual requirements and also upgraded at a later date as needed.

ASPUR air solutions

02.11.2022

Containment Transfer System (Patent pending)

ASPUR air solutions — Thu, 06 Oct 2022 07:00:00 GMT

Containment Transfer System (Patent pending)

New development for extraction systems in the pharmaceutical and chemical industry

The industry's requirements for containment are growing rapidly due to highly potent toxic agents, and with them the required OEB (=Occupational Exposure Band) protection level that extraction systems must achieve. ASPUR has set itself the goal of being able to implement the highest possible OEB level with its extraction systems, which is required above all in the pharmaceutical and chemical industries. With our new patent-pending Containment Transfer System, we achieve the highest level of protection, OEB level 6.

In order to better understand the OEB levels and the associated guide values, you will find below an overview of the 6 OEB levels with the maximum permissible loads. OEB 5 corresponds to an exposure of less than 1 µg/m³. If this were extrapolated to the size of the Empire State Building in New York, there should be no more than 1/20 of a teaspoon of the active substance in the entire building.

Overview OEB-Level (Professionsal association of chemistry)

OEB guidelines are designed according to ADE (Acceptable Daily Exposure) guideline values.

OEB Level	*Weigth/m³	*Weigth/day	Toxic potential
6	< 0,2 µg	< 0,01 mg	Extreme toxic
5	< 1 µg	< 0,1 mg	High toxic
4	< 1 - 10 µg	< 0,1 - 1 mg	Toxic
3	< 10 - 100 µg	< 1 - 10 mg	Mid toxic
2	< 100 - 1.000 µg	< 10 - 100 mg	Low toxic
1	< 1 - 5 mg	> 100 mg	Non toxic

*) max. permission load

The newly developed containment extraction system of the aerotain assembly makes it possible to extract and dispose highly effective, health-hazardous microparticles and substances dust-free. The core and special feature of the assembly is the containment transfer system. Filter changes of the main and HEPA filters are completely dust-free.

The newly developed system is available with our models aerotain2 and aerotain3:

ASPUR air solutions

06.10.2022

Source: tommyvideo (id) abstract-5719221, Pixabay.com

Funding of mobile air purifiers by government

ASPUR air solutions — Fri, 15 Apr 2022 07:00:00 GMT

Funding by government - Promotion III Plus / IV

Funding for the purchase of mobile air purifiers until June 2022.

A convincing hygiene concept is the chance to impress your customers. Effective air purification to remove viruses such as Corona and other malicious germs or bacteria is crucial. Creating trust is the key. The state and federal government are promoting their willingness to invest in air purifiers up to 100% in the event of corona-related sales losses between November 2020 and December 2021 (promotion III Plus) or January 2022 to June 2022 (promotion IV).

Until June 15th, 2022* you can apply for your investment in the purchase of air purifiers as part of a hygiene concept and have them subsidized by governments. The Deutsche Bundestag decided to extend the promotion IV for the funding period until June 30, 2022*, with largely the same conditions. The application is submitted via third-party examiners.

*) As of April 15, 2022

ASPUR air air purifiers are high-quality mobile air filtration devices designed for professional use. We offer an effective, permanent, safe and at the same time simple solution. We create trust for you.

Protection against corona in schools: ventilation or use of air purifiers

ASPUR air solutions — Tue, 22 Feb 2022 08:00:00 GMT

Protection against Corona: Ventilation or use of air purifiers in schools

Article from "Das Deutsche Schulportal" from 07/13/2021, updated on 02/11/2022

How can teaching be safe in the new school year?

How can the spread of the coronavirus through the air in the classroom be prevented? At the beginning of the 2020/2021 school year, there were already calls for air purifiers in schools - especially when temperatures dropped and forced ventilation every 20 minutes proved impractical. However, many federal states are still lagging behind when it comes to air purification devices. And there is no agreement on what is more useful - ventilation or air filter. The school portal answers the most important questions about ventilation and the use of air purifiers. And how is your school equipped with air filters? The results of our survey are sobering.

An additional 200 million EUROs were made available for the purchase of mobile purifiers in rooms that are difficult to ventilate, for example because windows can only be tilted open.

So far, only a few classrooms are equipped with air purifiers.

In order to counteract the further spread of the corona virus and to ensure safe school operations, many experts believe that air filters or air purification devices are essential. Others rely primarily on a good ventilation strategy and see mobile air filters as just a supplement.

Source: deutsches-schulportal.de/schulkultur

How do ASPUR air purifiers work

ASPUR air solutions — Wed, 26 Jan 2022 08:00:00 GMT

How do ASPUR air purifiers work?

All ASPUR AIR air purifier models meet the technical requirements for infection control ventilation in medical areas.

Filters tested according to the EN 1822 standard are used to reliably filter out viruses, bacteria, pollen, spores, germs and other particles that are hazardous to health. Up to 99.995% of all particles are safely separated via the 5 filtration levels and a high-quality high-efficiency particulate air filter (HEPA, level H14). A carbon filter (activated carbon) also adsorbs odor particles. The built-in motor technology and its efficiency corresponds to the most powerful IE4/IE5 industry standard Super Premium Efficiency Technology (EC Motor Technology).

Filteration levels (structure):

(1) Pre-filter fleece G4

(2) Pre-filter G9 fiberglass fleece

(3) HEPA H14-filter

(4) Carbon filter (activated carbon)

(5) Post-filter fleece

Mechanisms of action of particle separation

The particle separation takes place via deep-bed filters, which on the one hand influence the transport of the particles to the filter and on the other hand the deposit of the particles through various separation mechanisms. It is filtered as the air flows past the fiber or filter mesh.

Particles are separated by four different, complementary mechanisms that work depending on the particle size:

1. Sieve effect: As the name suggests, the filter works like a sieve: Particles whose diameter is larger than the distance between the individual fibers get stuck in the filter.

2. Barrier effect: Small, light particles follow the air flow. Although the movement of the particle's center of mass leads past the filter fiber, it is so close to the individual fibers that they stick due to adhesive forces.

3. Inertial effect: Larger particles have a higher mass and therefore higher inertia and follow the air flow with a certain inertia. When the airflow changes direction because it goes around a fiber, the particle's inertia causes it to maintain its direction, bouncing against the fiber and sticking there.

4. Diffusion effect: Very small particles below 1 micrometer (μm) do not follow the flow lines around the filter fiber. They collide with other molecules on their way to the airflow (Brownian motion) and then change direction, also colliding with individual glass fibers where they then stick. The size of the particles has a decisive influence on the effect of the individual separation mechanisms. Due to the diffusion effect, very small, fine particles in particular are separated, while the blocking and inertia effect mainly dominates with particles with a diameter greater than 0.5 µm. With the sieve effect, it is the large particles that are filtered.

Air purifiers reduce the risk of infection in schools

ASPUR air solutions — Fri, 19 Nov 2021 08:00:00 GMT

Air purifiers significantly reduce the risk of infection in classrooms

Study by the Frankfurt Goethe University from November 19, 2021

It doesn't have to be frozen!

Room air cleaners with Hepa filters are considered an alternative to regular airing. A new preliminary study by Frankfurt's Goethe University shows that the air purifiers can remove 90% of aerosols from classrooms in 30 minutes. This significantly reduces the risk of infection.

Good results in the classroom test.

For the study, which was published as a preprint on medrxiv.org, the research team led by Joachim Curtius tested four air purifiers in a school class with 27 students for a week. The devices used have a simple pre-filter for coarse dust and fluff as well as a HEPA and activated carbon filter. Together, the air purifier convert between 760 and 1460 cubic meters of air per hour. In addition to the aerosol pollution, the scientists determined the amount of fine dust and the CO2 concentration and examined the noise pollution caused by the device.

Even with a super spreader in the room, the risk of infection is reduced "Based on our measurement data, we made a model calculation that can be used to estimate: An air purifier reduces the amount of aerosols so much that in a closed room the risk of infection from a highly infectious person - a superspreader - would also be very significantly reduced," says curtius Noise measurements and a survey of the students and teachers showed that the noise from the devices was mostly not perceived as disturbing as long as they were not running at the highest level. "That's why we recommend that schools use HEPA air purifiers with a sufficiently high air flow rate this winter."

Source: rtl.de/news

High effectiveness of mobile air purifiers and masks

ASPUR air solutions — Sun, 11 Jul 2021 07:00:00 GMT

High effectiveness of mobile air purifiers and masks

Study on the effectiveness of reducing indoor aerosols by using air purifiers. A simulated session with 4 participants and simulated exhaled SARS-CoV-2 aerosols on July 7, 2021, U.S. Department of Health, CDC.gov

What is already known about this topic?

Air purifiers should be supplemented with mobile high-efficiency particulate air purifiers (HEPA) to reduce the number of infectious particles in the air.

What does the study find out?

A simulated infected meeting participant exhaling aerosols was placed in a room with two simulated uninfected participants and one simulated uninfected speaker. Using two HEPA air purifiers close to the aerosol source reduced the aerosol exposure of the uninfected participants and speakers by up to 65%. A combination of HEPA air purifiers and worn surgical mask reduced aerosol exposure by up to 90%.

What are the implications for public health practice?

Mobile HEPA air purifiers can significantly reduce indoor exposure to simulated SARS-CoV-2 aerosols, especially when combined with an additional surgical mask.

Source: www.cdc.gov

Professional air purifiers developed (journal of the Chamber of Industry and Commerce)

ASPUR air solutions — Fri, 12 Mar 2021 08:00:00 GMT

Professional air purifiers developed

ASPUR Air Solutions

Press article in the IHK magazine - Economy in East Württemberg - issue March 10, 2021 - page 18

The company ASPUR air solutions in Schwaebisch Gmuend (Ostalbkreis) is a manufacturer of industrial, ventilation filter devices and systems. Managing Director Joachim Ringler: "With our know-how, we have now developed professional air purifiers to make an important contribution to significantly reducing the contamination of viruses and pollutants in rooms."

Devices with air volume flows of 1000, 2000 and 4000 m³/h were brought onto the market via the subsidiary aspur-air. The models air 1000, air 2000 and air 4000 are equipped with a five-stage filter system in accordance with DIN EN 1822. Ringler: “The HEPA H14 filters used with a separation efficiency of 99.995 percent reliably filter out viruses and the finest particles. In addition, downstream activated carbon filters adsorb harmful gas molecules from the air.”

The ASPUR air purifiers are compact and only require 0.25m², 0.36m² or 0.49m² of installation space. The filters used come from the industrial filter technology used in clean rooms. In order to actually be able to achieve the H14 filter performance, the actual filter surface must be taken into account. If the filter surface load is too high (i.e. air quantity too large or filter dimensioned too small), the HEPA quality can no longer be achieved under certain circumstances.

ASPUR room air purifiers are suitable as individual devices for air purifiing in room sizes of approx. 60m², 120m² and 240m². According to Ringler, several devices can of course be set up in parallel to effectively filter air in larger rooms. The filter control automatically adjusts the power to the specified value and reports if the filter is clogged. ASPUR air purifiers are plug and play devices and can be put into operation immediately. www.aspur.de

Source: ostwuerttemberg.ihk.de

SARS-CoV-2: Air purifiers eliminate 90% of aerosols in school classrooms

ASPUR air solutions — Fri, 09 Oct 2020 16:00:00 GMT

SARS-CoV-2: Air purifiers eliminate 90% of aerosols in school classrooms

Experimental study of the medRxiv from October 6th, 2020 (published on aerzteblatt.de)

In an experimental study, the installation of 4 commercially available air purifiers reduced the concentration of aerosols in a classroom by 90% within half an hour. According to the study in medRxiv (2020; DOI: 10.1101/2020.10.02.20205633), the students and teachers came to conclusion that the noise pollution from the air purifiers are not disturbing.

SARS-CoV-2 and other respiratory viruses are transmitted via droplets, aerosols and by touching objects or people. Droplets are held back by a mouth and nose cover. Hand disinfection helps against transmission through touch. Air purifiers can be a protective measure against aerosols that are only partially retained by a mouth and nose cover.

The air purifiers accelerated the decay of the aerosols. Together, the devices converted between 760 and 1,460 m3 of air per hour, which means that the room air was filtered around 5.5 times per hour. According to the measurements, this resulted in a continuous drop in the aerosol concentration. It dropped more than 90% in 37 minutes from when the lesson started. According to the study, the reduction affected all particle sizes equally.

Source: aerzteblatt.de/nachrichten

School lessons during the SARS-CoV-2 pandemic

ASPUR air solutions — Fri, 25 Sep 2020 16:13:00 GMT

School lessons during the SARS-CoV-2 pandemic

Study by the University of the Federal Armed Forces in Munich, Institute for Fluid Mechanics and Aerodynamics from September 22nd, 2020

Result summary:

The content of the study was to examine whether mobile room air purifiers are suitable for reducing the risk of infection if free ventilation is no longer possible due to energy wastage in winter at the latest or due to a loss of well-being of people
Through the use of mobile air cleaners with high-quality class H14 filters, the aerosol concentration in a room with 80m² could be reduced to a low level within a short period of time
Mobile room air cleaners represent a very sensible technical solution to greatly reduce the indirect risk of infection from aerosols in schools, offices, shops, waiting rooms, community and club houses, lounges and dining rooms (canteens), etc
Daily heating of the filter is necessary to destroy the viruses and prevent the formation of biofilms, bacteria and fungi
In the long-term operation of such systems "no one will be able to generate an aerosol concentration of an infectious level in a room" (Prof. Dr. Kähler)
Prof. Dr. Kähler from the University of the Federal Armed Forces in Munich recommends a 6-fold air change to keep rooms at a low aerosol level.
In order to achieve fast and highly efficient filtering, a filter combination of classes F7 and H-14 is recommended
Due to the high air circulation, depending on the size of the room, the aerosol concentrations can be halved within 3-15 minutes and kept at a low level without any problems.
In contrast to free ventilation, mobile room air purifiers also ensure a real reduction in the virus load.
In buildings/rooms (e.g. waiting areas, fitness studios) in which large amounts of aerosols occur due to large crowds and high workloads, the devices can also be used to support HVAC systems

Source: researchgate.net/publications