"HAST" & "HAST-e" wingless fan & ring type blowers

  • Product Overview

    HAST and HAST-e are the world's first wingless fan-type blowers. It applies streamer technology to efficiently generate air flow. In addition, its hollow, ring-shaped structure allows for continuous ventilation without disturbing the flow of people and materials when working in closed spaces such as sewers and communal ditches, thus ensuring safe and efficient operations.
    hast-1

Features & Strengths

Improved work efficiency

hast-2
The hollow structure without blades allows workers and materials to be carried in and out of the manhole while continuing to ventilate the area, since the manhole entrance and exit are open without being blocked.

Efficient air flow generation

hast-3
The air volume discharged from the wind source is amplified tenfold through the application of streamer technology. In addition, the airflow generated by the device is a direct flow, which enables ventilation over a wide area.

Convenient handling

hast-4
Lightweight and compact, it is easy to carry.

Supports a variety of sites

hast-5
Ventilation can be tailored to the size and conditions of the work space by adjusting the air source and using deflectors.

Product Lineup

HAST HAST-e
Appearance

hast-6

hast-7
Continuous Operation
symbol used as a placeholder (either because a number of other words could be used in that position or because of censorship)
symbol used as a placeholder (either because a number of other words could be used in that position or because of censorship)
Duct
unnecessary
unnecessary
Airflow Rate (esp. radioactivity)
200m³/min
80m³/min
Power Consumption
Using 3.7m³/min air compressor
Approx. 320W
Air Volume Adjustment
symbol used as a placeholder (either because a number of other words could be used in that position or because of censorship)
○○ (2 steps)
Weight
Main unit 45kg
Main unit 13kg
Catalog

Case Studies

Reduce risk of occupational accidents

  • Municipality (Sewerage Management)

Issue

The safety of workers in sewer lines was constantly threatened by the generation of hydrogen sulfide and low oxygen levels. Conventional blowers easily blocked entrances and exits, and there was also the problem of restricted access to people and equipment.

Solution / Effect

HAST" was installed to provide forced ventilation while maintaining openings. Safety was greatly improved by distributing oxygen throughout the work space and reducing hydrogen sulfide concentration.

Efficient construction & improved working environment

  • Construction Industry

Issue

In joint trench construction, materials are frequently brought in and out, and people frequently enter and leave the site. In some cases, conventional blowers have reduced ventilation efficiency, resulting in a deteriorated site environment. Especially during long hours of work, there were growing concerns about oxygen deficiency and toxic gas retention.

Solution / Effect

HAST-e" was installed to provide continuous ventilation while securing the delivery route. Without compromising work efficiency, the air in the enclosed space can be replaced to maintain a comfortable and safe environment.

Improved worker safety

  • Shipbuilding & Marine

Issue

In storage layers and in-vessel tanks, there is an accident risk of oxygen deficiency and toxic gas poisoning during cleaning and inspection, and it is difficult to take sufficient safety measures with conventional ventilation systems.

Solution / Effect

The "HAST" is introduced to stabilize the oxygen concentration in the enclosed space by continuously blowing air during work. The featherless structure reduces the risk of contact and improves worker safety.

CONTACT

Please feel free to contact us!

Consultation and estimates for Environmental Business are free of charge. Our professional staff will be happy to assist you.
About our products
Want to know more?
I would like to consult
for introduction
I would like to check
for support and results
Contact us