Medium blower

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About medium blower

Types of medium blowers

A medium blower is a compact yet powerful piece of machinery that produces air at high pressure and low volume. There are many types of medium blowers with diverse applications.

  • Rotary lobe blowers:

    The prevalent type of medium blower is the rotary lobe blower. The blower compresses air using two asymmetric rotors that rotate in opposite directions. The compressed air is then pushed into the outlet. Generally, rotary lobe blowers work by displacing air. Hence, they don't suck in air. However, some models are designed to let in air compress it, and release it.

  • RIB rotary blowers:

    RIB rotary blowers are a subtype of rotary blowers. RIB blowers operate similarly to rotary blowers, but they have two rotors that have distinct lobes. The lobes look like an R and an I. This unique shape helps to trap and move the air efficiently, leading to a smooth and effective air compression and delivery process.

  • Centrifugal medium blowers:

    A centrifugal medium blower isn't a rotary blower despite the comparable working mechanism. The working mechanism is different. A centrifugal medium blower takes in air from the inlet. The impeller inside the casing rotates at high speed to increase the speed of the air. The air is then forced to move in circular motion within the housing. As the air moves circularly, it expands and gets compressed. Finally, the compression pushes the air out through the outlet. Centrifugal medium blowers are often used to aerate ponds, wastewater treatment facilities and aquaculture tanks.

  • Screw medium blowers:

    Screw medium blowers work by using two intermeshing rotors that create chambers. The chambers grow smaller as they move and push the compressed air out through the outlet. One biggest advantages of screw medium blowers is their quiet operation. Therefore, they are used in applications that require low noise level such as wood shops and boarding schools.

  • Single-stage medium blowers:

    A single-stage medium blower performs only one compression stage. The air is sucked in, compressed, and discharged in one rotor-stator set. Single-stage medium blowers are prevalent because of their simple design and efficient operation. Common applications include conveying light materials, packing line conveyors and waste water treatment aeration.

  • Multi-stage medium blowers:

    Multi-stage medium blowers have numerous rotor-stator sets inside. The blowers perform repetitive sucking, compressing and discharging of air. Multi-stage medium blowers generate a lot of pressure and are used in high-demand industries such as oil refineries and power generation facilities.

Medium blower specification and maintenance

The specifications of a medium blower show what distinct features it likely has. Pay attention to the usage scenario described. Some features can make the blowers work better in certain settings than others.

  • Applicable Environment: The applicable environments of a medium blower can lie between 0-40 degree Celsius or up to 60 degree Celsius. A standard 40 Celsius blower will work in temperatures up to 40 degree Celsius. However, a 60 Celsius variant can work in ambient temperatures up to 60 degree Celsius. The higher applicability limit of a 60 Celsius blower makes it suitable for working in more heat-intensive environments, such as close to hot machinery. However, both over and under applicability environment limits are bad for the blower's performance and longevity.
  • Air Flow Rate: Medium blowers with air flow rates above 3,000 m3/h are great for ventilation in large, confined spaces. They also transfer more air per minute. Some of them work better than those with a lower air flow rate in industrial and commercial settings. In contrast, a lower air flow rate may suit a more domestic use of the medium blower.
  • AUDIT: The blower's audit indicates how loud the machine will be during operation at a measured distance. Many medium blowers produce an air audit of about 85 dB(A). This level of air noise can disturb people within a large area, especially close to the blower's outlet. Blowers with a lower AUDIT create a more peaceful surrounding, but they may not get the job done in large spaces.

Maintenance

Regular maintenance is necessary to keep the medium blowers in good working condition for a long time. Instead of planned stoppages for complex repairs or breakdowns, regular maintenance can help to ensure efficient performance and minimal downtimes. Here's some maintenance and care tips for heavy-duty blowers:

  • Check the more critical parts of the blower and its overall condition from time to time. Examine the housing for any possible cracks, dents, or damage. More frequent checks are necessary if the environment is extremely harsh or the working hours are long, such as in a factory.
  • Clean the impeller periodically to prevent blockages, especially if it handles dusty air. Stuck debris can lead to imbalance and excessive noise during operation.
  • Lubricate the bearings regularly. Use a forceful drive and a well-calibrated pump to deposit grease only in the recommended quantity. Following the guidance helps to keep the bearings cool and prevents premature failure.
  • Fit a filter to keep dirt and foreign particles from entering the blower. Change the filter as required to get the most from this practice.
  • Carry out the recommended maintenance procedures. It is best to have a skilled technician carry out necessary maintenance instead of just following the user's manual.

Application Scenarios of Medium Blowers

  • Industrial Facilities:

    Within smelteries, mines, and cement-producing facilities, medium air-moving machines are indispensable. They facilitate the rapid and controlled cooling of mechanisms, ensure employees' well-being by comprehending cool air, and assist in the enforced pyrotechnic activity by propelling the combustion of fuels.

  • Warehouse Management:

    In the context of logistics and storage, medium air-blowers prove valuable. They are applied for the expeditious drying of products and the obliteration of dust, and they contribute to preserving the freshness of stored commodities.

  • Automotive Repair Shops:

    Within automotive service centers, medium blowers show their utility. They are applied to facilitate the process of drying after washing vehicles, undertaking repairs, and eliminating dust and debris accumulation on work surfaces and instruments.

  • Cleanrooms and Laboratories:

    In facilities demanding elevated purity levels, such as cleanrooms and laboratories, medium air-blowers are utilized. They serve to suppress the infiltration of particulate matter, ensuring the cleanliness of the environment and minimizing the risk of contamination.

  • Food Processing Industry:

    Medium blowers have diverse applications in the food processing industry. They are employed to facilitate drying processes, remove excess moisture, and prevent microbial growth, thereby extending the shelf life of food products.

  • Construction Sites:

    On construction sites, medium blowers prove useful for various tasks. They are employed to expedite drying processes for constructions, remove debris, and enhance air circulation, thereby improving the working conditions for laborers.

  • Event Venues and Entertainment Facilities:

    Within event spaces and entertainment centers, medium blowers fulfill multiple roles. They are employed to ensure the audience's comfort by providing cool air, supporting ventilation systems, and contributing to the safety and well-being of individuals present.

How to choose a medium blower

When selecting a medium-size blower for a specific need, it's important to carefully evaluate the entire feature set to see how well it matches requirements. First, look at the air volume and pressure the machine needs to generate. Is the task more about moving huge amounts of air (Cubic Feet per Minute, or CFM) or about developing enough force (Cubic Inches of Air Pressure, or PSI) to clean that particular surface? The sizes may vary depending on the application. For example, when inflating a pool or exercise ball, a simple vacuum of small CFM and PSI may suffice. But for more industrial tasks like drying carpet, a more powerful blower with higher PSI and CFM is needed. In such a case, a mid-sized blower with greater specifications should be considered. Noise is another important factor that requires attention. Fans make noise when they run, and larger ones tend to be noisier. It's important to check the decibel rating as a way to gauge the noise level. Generally, the higher the number, the louder the machine. It's also important to consider what level of noise is acceptable before purchase. Smaller fans are around 60 decibels, similar to normal conversation but more like a standard home fan. Mid-size models may be around 90 decibels, a level that's considerably loud. Industrial machines may be closer to 100 decibels, which is like the noise of a heavy truck driving by. More noise means more air and pressure, so it’s all about the trade-off. If a quieter machine is more desirable, a different model can be chosen. Power usage is also essential to think about. The fan has to run off of a power source, so it's a good idea to check what it draws from the wall in Watts. A higher draw uses more electricity and costs more to run. A smaller blower runs at around 50 Watts, while a medium-size overall could be 500-1000 Watts or more. A higher power draw is fine for larger tasks, but it’s important to consider if driving that cost for a specific need is within budget.

Medium blower Q & A

Q1: Is a medium-sized blower the same as a bushed air sealer?

A1: No. While both are used to control air movement in different spaces, a medium-sized blower is more about generating the flow, whereas a bushed air sealer focuses on stopping it by sealing the bushes.

Q2: Can a medium-sized blower improve my home's energy efficiency?

A2: Absolutely. By properly adjusting and maybe even replacing your outdated one, you can improve the energy efficiency of your medium-sized blower, which will lower the expenses related to the heating and cooling of your home.

Q3: How loud are medium-size blowers?

A3: The loudness depends on the pressure the machine is working at. Generally, the higher the pressure, the louder the noise. For exact numbers, see the specifications of each blower.

Q4: What is the difference between a medium and big air blower? 

A4: While a large air blower moves a higher volume of air, a medium one strikes a balance between air volume and portability, making it easier for everyday tasks.