The difference between forward blade and backward blade of centrifugal fan impeller
The difference between forward blade and backward blade of centrifugal fan impeller
May 19, 2017
The impeller type of centrifugal fan is mainly divided into forward blade and backward blade. These two types are very different. In this article, we will compare the difference between the two types of blades. So it can be your future reference when choosing industrial centrifugal fans.
1. Pressure: When the impeller size, speed and flow are the same, the full pressure of the forward type impeller is larger than that of the backward type impeller.
2. Efficiency: Although the pressure of forward blade is the maximum, it is mainly due to the increase of the dynamic pressure of the impeller outlet. This dynamic pressure is more than 50% of total pressure. This partial dynamic pressure must be converted to static pressure in the spiral case behind the impeller. Practice proves that the efficiency of spiral case is low. In addition, the loss of the curved blade runner is larger, so the efficiency of the spiral case and the impeller is higher than that of the former.
| Blade angle | Project | ||||||||
| Efficiency | Cost | Size | Scope of work | Speed | Abrasion resistance | Corrosion resistance |
Noise | Operating Temperature | |
| Forward | low | low | small | narrow | low | poor | average | high | Medium high |
| Backward | high | high | big | wide | high | good | good | low | medium |
SIMO Blower impellers are in accordance with customer requirements and mostly apply the backward blade type. This blade can meet the needs of customers in many variety ways. At the same time, the use of the blade is longer. SIMO Blower focus on fan design and production. 60 years of service experience. Choose SIMO Blower industrial fan, because it is trustworthy!
Recent Posts
October 26, 2016
The Most Successful Engineering Contractor
Oct 19, 2016
Analysis the classification of the centrifugal fan
Oct 12, 2016
Noise Countermeasures for Boiler Fan
Aug 30, 2016
Centrifugal Fan Product Export
Contact US
Product Information
Quantity
Unit
Piece
Support order samples, customization, wholesale direct, and complete payment. If the product you look for does not have corresponding customized content, pls fill out the form below to contact us, and we will reply ASAP.