工場内冷却&工場換気の分野における業界のリーダー

Roof Exhaust Fans

作業場を快適に保つ「空気交換」に欠かせない Roof Exhaust Fan「屋根用排気ファン」。天井に溜まる熱く汚れた空気を屋根から外に送り出します。

今すぐ問い合わせる
Roof Exhaust Fan Motor Belt-Driven Centrifugal Design Elegant Design Aluminum Housing

Roof Exhaust’s Features

美しい外観

上品な外形が屋根の輪郭線を美的に見せます。

遠心設計

静圧が高く、遠心設計されたこのファンはダクトを取付けその効果を広範囲に渡って適用することができます。

ベルト駆動

ベルト駆動を利用する設計が低速度、すなわち低ノイズでの稼働を実現します。

モータの設置場所

モーターは空気流の外側に設置してあります。特に排出される空気が埃やその他の空中浮遊粒子で汚れている場合はこれによりファンの長寿命を保証します。

アルミニウム製の筐体

ファンホイールおよび筐体にはアルミニウム合金を使用しています。軽量かつ金属製の屋根架構への荷重も最小限に抑えてあります。

溜まっている熱気を除去する最も効果的な方法

弊社のある地元の気候では、工業用鉄骨建造物の金属屋根の温度が日中で最高80 ˚Cまで上がります。この屋根がその熱を建造物の中へと放射するため、屋内に熱気の層が形成されてしまいます。この結果として生じる熱気の上層部分は屋根の中心線に合わせて設置された屋根用排気ファンで取り除くのが最も効果的であると言えます。

CFD Simulation & Finite Element Analysis Technology

Our manufacturing partner in China uses computer-aided air movement simulation model to calculate the efficiency pf the fan based on the number of blades, blade angle, with, and sound level. It also analyses and provides accurate prediction of how material is likely to respond when subjected to structural and/ or thermal loads

プロジェクト例

Versus

Wall Exhaust Fan

In our local climate, the metal roof of an industrial steel building can be heated up to 80 ˚C at the middle of the day. The roof then radiates the heat down into the interior of the building which will lead to the formation of stratified hot air within the building. 

Centrifugal Roof Fan

The resultant upper layers of hot air are most effectively removed with roof exhaust fans installed along the roof center line.Often wall exhaust fans are installed instead but they will not perform with the same effectiveness as roof exhaust fans. Wall exhaust fans are more for the purpose of creating air change in the building.
Versus

Axial Roof Fan

Electric motor is in the air stream and subject to the hot and maybe contaminated air.
Axial fan blades cause air turbulence and backward flow before air is discharged

Centrifugal Roof Fan

Electric motor is located outside the air stream.
Centrifugal fan blades delivers a smooth downward exit air flow
Versus

Wind Driven Fan

We do not consider Wind Driven Fan is an alternative to our Centrifugal Roof Fan because of the following reason:
Wind Driven Fan depends only on strong wind velocity to work.
Even under strong wind velocity, air flow through the unit is very small (200 m3/h)
When the bearing of the unit ceases up, rain water will go pass the roof.
Wind Driven Fan does work in house attic but fail badly in all industrial buildings

Centrifugal Roof Fan

We do not consider Wind Driven Fan is an alternative to our Centrifugal Roof Fan because of the following reason:
Wind Driven Fan depends only on strong wind velocity to work.
Even under strong wind velocity, air flow through the unit is very small (200 m3/h)
When the bearing of the unit ceases up, rain water will go pass the roof.
Wind Driven Fan does work in house attic but fail badly in all industrial buildings

Dimension & Weight

Models
CRF-575-0.75-GT
CRF-675-1.5-GT
CRF-750-2.2-GT
A (mm)
940
1100
1200
B (mm)
890
995
1000
C (mm)
750
900
900
D (mm)
70
53
53
Weight (kg)
62
84
92

Technical Data & Performance

Models
CRF-575-0.75-GT
CRF-675-1.5-GT
CRF-750-2.2-GT
Air Flow (m3/h)
10,000
15,000
15,000
Static Press (Pa)
50
100
100
Fan Speed (rpm)
781
725
720
Noise Level
Point A
63 dB (A)
65 dB (A)
70 dB (A)
Motor (kW)
0.75
1.50
2.20
Ph/Voltage
3Ph/380V
3Ph/380V
3Ph/380V

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