Castle Blower, Inc.

Company profile

Products

Features

Who use our blowers

Application

Catalogue

Product Features

1. .. Vibration on bearings ≦2.5mm/s for all fans and blowers
2. .. Long Service Life
3. ...High Efficiency
4. .. Low Running Cost
5. .. Low Noise
6. .. Heavy Duty and Sturdy Construction
7. .. Oil Free

Our Insistence

1. ..V-belt: "Opti-belt", which is made in Germany, is used if driven
.. .. .by V-belt.
2. ..Bearings: "SKF"
3. ..Non-contact Dry-running gas seal would be used in gas-tight blower.
4. ..Every fan or blower must be checked by Vibration Spectrum Analyzer
.. .. /and pass our 2.5mm/s vibration standard before delivery.
.. .. /Click here for a test report.

Vibration Spectrum Levels for Fan & Blower
Band	Frequency band	Vibration unit	Control criterion
1	Overall	mm/s (0-peak)	≦2.5
2	0.3~0.8 Rotating speed	mm/s (0-peak)	≦1.2
3	0.8~1.2 Rotating speed	mm/s (0-peak)	≦2.3
4	1.2~3.5 Rotating speed	mm/s (0-peak)	≦1.3
5	3.5 Rotating speed ~ Fmax	mm/s (0-peak)	≦0.7
6	0.3 Rotating speed ~ Fmax	G's (0-peak)	≦0.5

Fmax : 50 Rotating speed


	Materials
		Carbon steel Casting iron, Casting aluminum alloy Austenite stainless steel Hastelloy INCOLOY alloy 800HT Ni-Cr alloy Ni-Cu alloy Ni-Mo-Cr alloy Ni-Si alloy Fe-Cr-Ni alloy 1.4529

Comparison of Casting & Mild Steel Blower

Item	Mild Steel Blower	Casting Blower
Scroll	Rectangular Scroll Welded and Seamed May leak	Circular Cone Scroll Seamless Mold Casting Gas Tight
Inlet Cone	With Big Gap, like a hole on duct High Back-Streaming Velocity Large Leakage High Noise	With Machining Good Concentricity Small Gap and Leakage Low Noise
Diffuser	No Diffuser Gas Blow out Roughly May Back-Stream to Suction	With Diffuser Gas Blow out Smoothly No Back-Streaming
Noise	Mild Steel Scroll Poor Absorption and Insulation May need Lagging	Thick Casting Scroll Good Absorption and Insulation
Efficiency	Capacity: 120m³/min Static Pressure: 5000mmAq Efficiency: 55% BHP: 210BHP=157kW	Capacity: 120m³/min Static Pressure: 5000mmAq Efficiency: 70% BHP: 165BHP=123kW
Conclusion	Low Efficiency High Vibration High Noise Short Life High Running Cost	High Efficiency Low Vibration Low Noise Long Life Low Running Cost