What is BFU? Application of BFU in daily life

Clean air plays a crucial role in various sectors, including education, healthcare, and industry, as it directly impacts human health. One of the most effective solutions to maintain a fresh and safe environment is using BFU equipment. So, what exactly is BFU, and why is it important? Let’s explore this topic with Puritrak in the article below!

1. What is BFU?

BFU (Blower Filter Unit) is an integrated air purifier system consisting of a centrifugal fan (blower) and a primary filter enclosed within a metal casing. BFU units operate independently at each air outlet, reducing the need for complex installation and processing.

This device is designed to deliver clean air with high airflow and pressure, making it ideal for environments that require stringent cleanliness standards, such as cleanrooms, electronics manufacturing plants, pharmaceutical facilities, and other industrial applications.

BFU, FFU, and EFU are commonly used air purifier devices, each with different features:

• BFU (Blower Filter Unit): Uses a centrifugal fan (blower) to generate airflow. It provides higher pressure and airflow, making it suitable for cleanrooms and large-scale industrial applications.
• FFU (Fan Filter Unit): Uses an axial fan to create airflow. It has lower pressure and airflow than BFU and features a compact design, making it ideal for cleanrooms and smaller-scale applications.
• EFU (Exhaust Filter Unit): Designed specifically for air exhaust and filtration. It is usually installed at the system’s outlet and focuses on handling exhaust air rather than supplying clean air.

Due to their differences in structure, filtration performance, pressure, and operation, choosing the right unit depends on the cleanroom standards and required air purity level.

2. How Does BFU Work?

2.1. BFU Structure

BFU consists of three main components: a fan, an air filter, and an air distribution box. Each part plays a crucial role in ensuring clean air circulation.

• Fan:

Provides the necessary airflow to push air through the filter at high efficiency.

Equipped with a speed control system to optimize airflow and pressure, enhancing performance while saving energy.

Operates at high speed while maintaining low noise levels, ensuring a comfortable working environment.

• Air Filtration System:

Uses advanced HEPA or ULPA filtration technology.

HEPA filters remove at least 99.97% of particles as small as 0.3 µm, while ULPA filters achieve a higher efficiency of 99.999% for particles as small as 0.12 µm.

Made from various materials such as micro-glass fiber, PTFE, or PP, each suited for specific environments and applications.

• Air Distribution Box:

Constructed from electrostatic-coated steel, providing durability, aesthetics, and protection for internal components.

Optimally designed to evenly distribute airflow within cleanroom spaces while minimizing noise from the fan.

Integrated with modern control systems, sensors, and indicator lights for easy monitoring and operation.

2.2. BFU Operating Principle

BFU is designed for large spaces, following modern cleanroom safety principles. It facilitates selective and continuous air exchange between the indoor and outdoor environment.

Contaminated air inside the room is expelled while fresh air is drawn in from outside. During this process, the HEPA filter effectively removes particles and impurities larger than 0.3 microns, ensuring that the indoor air quality meets high standards.

3. Applications of BFU in Various Fields

3.1. Healthcare and Medical Fields

– Operating rooms and hospital cleanrooms: Maintains a sterile environment, reducing the risk of infection.

– Isolation rooms: Used in infectious disease wards, particularly during COVID-19 or for airborne disease treatment.

– Pharmaceutical production and storage: Ensures contamination-free environments in pharmaceutical manufacturing facilities.

See more: Hospital air quality status

3.2. Industrial Manufacturing

– Electronics industry: Controls dust and particles in semiconductor and microchip production.

– Food and beverage industry: Maintains hygiene standards, preventing contamination from airborne particles.

– Biotechnology: Protects sensitive environments in biological research labs and vaccine production.

3.3. Residential and Office Use

– Indoor air filtration systems: Improve air quality, especially in highly polluted or fine dust areas.

– Workspaces: Enhances indoor air quality in large office spaces, reducing respiratory disease risks.

– HVAC systems: Some central air conditioning systems integrate BFU to enhance air purification.

3.4. Aerospace and Transportation

– Aircraft and train HVAC systems: Ensures clean air circulation for passengers, reducing disease transmission risks.

– Airports and train stations: Helps maintain clean environments in waiting areas and high-traffic zones.

3.5. Research and Laboratory Applications

– Chemical and biological laboratories: Maintains stable air conditions, preventing cross-contamination.

– Quality control rooms: Ensures precision in medical, food, and pharmaceutical product testing environments.

4. Benefits of Using BFU

BFU systems offer several advantages:

• Durable stainless steel casing, resistant to corrosion while maintaining an aesthetically pleasing design.
• Flexible installation options (top, bottom, horizontal) for diverse construction needs.
• Equipped with HEPA/ULPA filters, removing 99.97% of particles as small as 0.3 microns.
• Smart airflow management system, minimizing pressure loss.
• Aerodynamic design, optimizing airflow diffusion.
• Energy efficiency, reducing operational costs.
• High-performance centrifugal fan, with a lifespan of up to 50,000 hours, providing high airflow and static pressure.
• Adjustable fan speed, offering multiple control methods.
• Easy installation and maintenance.

However, BFU systems also have some limitations:

• Higher initial investment compared to conventional air filtration systems.
• Filtration efficiency may be affected by improper installation, requiring careful placement and configuration.

5. How to Choose the Right BFU System

When selecting a BFU system, consider the following crucial factors:

• Assess the space and area of the cleanroom to select the appropriate BFU capacity and size.
• Determine the required cleanroom standard (ISO 5, ISO 6, ISO 7, etc.) to choose the corresponding filtration efficiency and the suitable HEPA or ULPA filter type.
• Required airflow capacity, calculated based on the number of air changes per hour.
• Noise level considerations for environments needing quiet operation.
• Product durability and warranty policies for long-term use.
• Smart monitoring features, such as cloud-based tracking and system-wide remote control.

See more: Air purification solutions

BFU is an essential solution for high-efficiency air purification in various applications. Its flexibility and integration capabilities with HVAC systems maximize investment efficiency.

Choosing the correct specifications and installation location is crucial for optimal performance. Consulting experts and following manufacturer-recommended maintenance schedules will ensure long-lasting effectiveness and reliability.

We hope this article has provided comprehensive information for those interested in learning about BFU devices. If you are considering an air purification solution for your facility, contact Puritrak today for a free consultation with our team of experts.

Puritrak products and services:

• Puritrak air purifier
• Puritrak indoor air quality measuring device
• Puritrak outdoor air quality measuring device
• AQM solution

Contact info:

• Hotline: 0904.800.006
• Website: puritrak.com
• Email: [email protected]
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