单级离心鼓风机

用于曝气和干燥的大流量、低压空气。

技术参数

容积流量（FAD）: 12.6 – 160.0 m³/min
工作压力: 1,100 bar g
电机功率: 22 – 250 kW
重量: 760 – 4,600 kg
噪声级: 72 – 81 dB(A)

概述

Not every process needs high pressure. Aerating a wastewater basin, conveying grain or drying a bottle line needs a large volume of air at well under one bar, and a compressor is the wrong machine for that job.

A single-stage centrifugal blower moves that volume efficiently. With magnetic or air-foil bearings there is no oil and no contact wear, which is why they are the standard choice on large aeration plants where they run continuously for years.

主要优势

Right machine for low pressure

Efficient in the 0.3 – 1.0 bar band where a screw compressor is wasteful.

Oil-free by design

Magnetic or air-foil bearings mean no lubricant anywhere in the air stream.

Variable speed as standard

Aeration demand changes hour by hour. The blower follows it instead of throttling.

维护量极低

No contact bearings, no gearbox on direct-drive versions, no oil changes.

机器是怎么造的

鼓风机以低压输送大流量空气，这和压缩机完全是两件事，靠的是叶轮，而不是螺杆或活塞。

叶轮和蜗壳是与某个工况点匹配的。这就是为什么鼓风机必须按您的流量和压力选型，而不能按电机功率买，也是为什么偏离工况点运行的鼓风机会浪费大量电力。

这种机型气流中没有油，所以输出的空气本身洁净，不必为任何一级过滤付出压降代价。

叶轮与蜗壳按您的工况匹配
低压大流量
气流中没有油
直联传动，没有皮带要张紧
运行安静，振动小
含进气过滤与消声
可选变频
适合连续运行

控制器做的事

鼓风机的控制问题，是如何跟随需求而不把空气白白放掉。进口导叶和变频都能高效做到这一点。放空则是浪费，只作为最后手段。

流量、出口压力和电机功率都会显示，于是每单位产气所耗的功率可以直接读出来，不必靠推算。

在这种机型上，喘振保护很重要。控制器让机器远离喘振线，而不是指望操作人员知道那条线在哪里。

进口导叶调节或变频调节
放空只作为最后手段
流量、压力与功率显示在同一屏
内置喘振保护
多台鼓风机联控
以小时计的保养倒计时
用于工厂报警系统的无源触点
可选远程监控

配件与保养套件

进气滤芯、轴承和联轴器是按计划更换的项目。进气滤芯便宜，而它保护的叶轮并不便宜。

轴承按运行小时更换，每次保养都记录振动，这样在有人需要趋势之前，趋势就已经存在了。

我们每次保养都记录流量、压力和功率。在鼓风机上，这三个数字合起来，是关于它是否仍然高效的唯一诚实的说法。

按周期更换的进气滤芯
轴承按运行小时保养
联轴器检查与更换
每次保养都记录振动
记录流量、压力与功率
叶轮按计划检查
按您的序列号核对
服务方案下固定价格

机型范围

型号	电机功率	容积流量（FAD）	工作压力	噪声级	重量	外形尺寸长 x 宽 x 高
GAC-CB 121	22 kW / 30 hp	12.6 m³/min (756 m³/h)	1,100 mbar g	72 dB(A)	760 kg	1,600 × 1,000 × 1,500 mm
GAC-CB 221	37 kW / 50 hp	23.0 m³/min (1,380 m³/h)	1,100 mbar g	73 dB(A)	1,100 kg	1,900 × 1,200 × 1,700 mm
GAC-CB 410	75 kW / 100 hp	45.0 m³/min (2,700 m³/h)	1,100 mbar g	75 dB(A)	1,850 kg	2,300 × 1,500 × 2,000 mm
GAC-CB 720	110 kW / 150 hp	72.0 m³/min (4,320 m³/h)	1,100 mbar g	77 dB(A)	2,600 kg	2,700 × 1,700 × 2,200 mm
GAC-CB 1050	160 kW / 215 hp	105 m³/min (6,300 m³/h)	1,100 mbar g	79 dB(A)	3,400 kg	3,100 × 1,900 × 2,400 mm
GAC-CB 1600	250 kW / 335 hp	160 m³/min (9,600 m³/h)	1,100 mbar g	81 dB(A)	4,600 kg	3,600 × 2,100 × 2,600 mm

GAC-CB 12122 kW / 30 hp

1,100 mbar g: 12.6 m³/min (756 m³/h)

噪声级: 72 dB(A)
重量: 760 kg
外形尺寸长 x 宽 x 高: 1,600 × 1,000 × 1,500 mm

GAC-CB 22137 kW / 50 hp

1,100 mbar g: 23.0 m³/min (1,380 m³/h)

噪声级: 73 dB(A)
重量: 1,100 kg
外形尺寸长 x 宽 x 高: 1,900 × 1,200 × 1,700 mm

GAC-CB 41075 kW / 100 hp

1,100 mbar g: 45.0 m³/min (2,700 m³/h)

噪声级: 75 dB(A)
重量: 1,850 kg
外形尺寸长 x 宽 x 高: 2,300 × 1,500 × 2,000 mm

GAC-CB 720110 kW / 150 hp

1,100 mbar g: 72.0 m³/min (4,320 m³/h)

噪声级: 77 dB(A)
重量: 2,600 kg
外形尺寸长 x 宽 x 高: 2,700 × 1,700 × 2,200 mm

GAC-CB 1050160 kW / 215 hp

1,100 mbar g: 105 m³/min (6,300 m³/h)

噪声级: 79 dB(A)
重量: 3,400 kg
外形尺寸长 x 宽 x 高: 3,100 × 1,900 × 2,400 mm

GAC-CB 1600250 kW / 335 hp

1,100 mbar g: 160 m³/min (9,600 m³/h)

噪声级: 81 dB(A)
重量: 4,600 kg
外形尺寸长 x 宽 x 高: 3,600 × 2,100 × 2,600 mm

容积流量按 ISO 1217 第四版附录 C 与 E 实测，进气 1 bar(a)、20°C、湿度 0%。噪声按 ISO 2151 在自由场条件下测量，公差 ± 3 dB(A)。每款机型均有水冷版本，可向我们索取其数据表。

常见问题

What is a blower rather than a compressor?

A blower moves large volumes at low pressure: typically under 1 bar gauge. Above that you are into compressor territory and different machines.

Where are they used?

Wastewater aeration, pneumatic conveying, combustion air, drying and cooling, anywhere you need a lot of air but very little pressure.

Why not use a compressor for this?

Because compressing to 7 bar and throttling back to 0.5 wastes most of the energy. Matching the machine to the pressure is where the savings are.

How is flow controlled?

Variable speed, or inlet guide vanes on larger machines. Throttling a blower is possible but wasteful, and on aeration duty it is the commonest fault we find.

Are they oil-free?

In the air path, yes. Lubrication is confined to the bearings and gearbox, so nothing reaches the process air.

How noisy are they?

Loud at the inlet without treatment. Silencers and acoustic housing are standard on installed plant, not an optional extra.

What maintenance do they need?

Bearings, filters and lubrication, with vibration monitoring on larger units. Far less than a positive displacement machine of the same duty.

What is surge on a blower?

The same phenomenon as on a centrifugal compressor: flow reversal at low demand. The control system must keep the machine clear of it at all times.

How do I size one?

By flow at the actual site conditions and the true system pressure, including diffuser and pipe losses. Sizing on paper pressure is why so many blowers run throttled.

What saving is available on an aeration plant?

Frequently 20–30%, from correct sizing and speed control together. Aeration is usually the largest electricity user on a wastewater site.

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