The ring blower is one type within the broader category of air blowers. So what makes a ring blower special, and what are its construction and advantages?
In this article, Thái Khương shares information about this type of air blower, which is widely used in aquaculture and water/wastewater treatment applications.
What is a ring blower? What is its construction? What are its applications and advantages? Read on to find out!
See also: industrial ring blowers — comparison of 4 technologies (ring / Roots / screw / turbo), selection table by application, and Aerzen / Robuschi / FPZ product lines.
What Is a Ring Blower?
The ring blower takes its name and shape from the scallop or snail shell. Designed to serve a wide range of industries and applications, it is available across a broad power range — from ultra-compact units of around 100 W up to models with power outputs of several hundred kilowatts.
To better understand what a ring blower is, let us look at what makes its construction distinctive.
Construction of the Ring Blower
Discussing the construction of a ring blower — picture the shape of a scallop or snail shell to get started. The machine has a relatively simple structure, consisting of the following main components:
-
- Machine housing (casing)
- Impeller
- Inlet port
- Outlet port
- Motor
The machine housing — the outer casing — is made of stainless steel or other special materials such as high-grade plastics or carbon-based materials that are strong and durable. The casing features numerous heat-dissipation fins, enabling the machine to operate under stable conditions with controlled temperature, thus extending equipment service life.
The impeller generates airflows according to the speed of the driving motor. On certain models, the impeller can simultaneously produce both vacuum and blown air within the same housing.
In addition, to control noise, ring blowers can be fitted with silencers to reduce operating noise levels.
Working Principle of the Ring Blower
The blower has an impeller mounted inside the casing. As air enters through the inlet port, the impeller blades draw air in and accelerate it outward, delivering it through the ducting to the point of use.
As the impeller rotates and acts on the airstream, the air moves progressively faster. At the base of the casing, a discharge port redirects the air out of the housing, reducing its velocity and thereby increasing pressure.
In particular, FPZ ring blowers operate on an impulse principle. This means that kinetic energy from the rotating impeller is transferred to the pumped medium and converted into pressure. The impeller is mounted directly on the motor shaft and, together with the specially shaped casing, forms a side channel.
The pumped medium is drawn in, compressed in the side channel, and transferred to the second stage after one revolution. There it is compressed again before being discharged. In this way, a side channel blower can be used to generate both vacuum and blown air. The rated power of the motor determines the maximum differential pressure of the blower. Two silencers fitted on the inlet and outlet sides ensure quiet operation.
FPZ blowers are used across a wide range of applications: from commercial to industrial installation, food processing to pharmaceuticals, textiles to aerospace, and medical to environmental applications. Wherever efficiency and reliability are required, FPZ provides the appropriate product solution.
Advantages of the Ring Blower
Ring blowers are widely used in industrial production systems, aquaculture, and wastewater aeration. They are a preferred choice for many reasons, including:
-
- They enable stable system operation and deliver high economic efficiency.
- Their compact design allows easy transportation and installation in various positions.
- The impeller is cast as a single piece from high-precision alloy, ensuring durability over time. As a result, the machines have a long service life and require minimal maintenance.
- Built-in silencers reduce motor noise, preventing noise disturbance to the surrounding environment — particularly important in aquaculture areas.
- Available in multiple power ratings. The machine consistently delivers a stable airflow, ensuring even air distribution across multiple points — such as shrimp ponds, fish tanks, and aquaculture facilities in general.
- Simple installation and operation with easy control — an advantage of this product line. Even aquaculture farmers with limited technical knowledge can operate the equipment confidently and use it effectively in their production area.
Types of Ring Blowers
There are many versions of ring blowers available on the market today. In general, they are classified based on the number of impeller stages — that is, by their construction characteristics. We can broadly divide them into 02 basic types as follows:
-
- Single-stage ring blower: a type with only one impeller stage. Generally limited in power and well-suited to small and medium-sized applications.
- Two-stage ring blower: a type with higher power output, producing high-volume airflow at greater pressure. Some models can simultaneously generate vacuum alongside blown air, as introduced above by Thái Khương.
Considerations When Purchasing a Ring Blower
The first thing to do when purchasing a ring blower is to identify your intended use. Why? Because depending on the situation and application, a different type or brand of machine will meet your requirements.
For example: a ring blower used for microbial cultivation or aquaculture has different characteristics from one used in industrial air supply, mining, or gas transport applications.
Therefore, Thái Khương suggests several key factors to consider when selecting a suitable air blower:
-
- What application will you use it for?
- What is the installation location, and how far are the supply and discharge points?
- Do you need a continuous or intermittent airflow?
- What are the minimum and maximum power requirements for the blower?
- What is your budget for a ring blower?
Applications of the Ring Blower
Ring blowers are currently used across a wide range of industries, including:
-
- Electroplating, metallurgy
- Textiles, leather
- Wastewater, wastewater treatment
- Food processing,
- Aquaculture,
- Oil and gas, mining…
The machine provides a clean air supply free from dust and impurities that could contaminate the water source. This is why an air blower is an indispensable piece of equipment in wastewater treatment and aquaculture processes.
In gas and air handling applications, ring blowers are used to transport, distribute, and fill gas into storage tanks and transport vehicles.
In this article, Thái Khương has shared detailed and useful information about ring blowers.
Thái Khương is currently an authorized distributor of genuine air blower product lines from European and US brands, as detailed below. Please contact Thái Khương for specific consultation!
