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无油螺杆空压机

Class 0 空气,压缩腔内任何位置都没有油。

技术参数

容积流量(FAD)
0.3 – 6.9 m³/min
工作压力
5 – 10 bar g
电机功率
15 – 37 kW
重量
624 – 995 kg
噪声级
61 – 71 dB(A)
无油螺杆空压机

概述

There is an important difference between air that has been filtered until it is nearly oil-free and air that never touched oil. If your product is food, medicine, electronics or textiles, only the second one protects you, a filter element that fails silently does not announce itself until the batch is ruined.

Green Air oil-free screw compressors use precision-timed rotors that never touch each other or any lubricant. The result is certified ISO 8573-1 Class 0 air: not a low oil content, but no measurable oil content at all.

主要优势

Certified Class 0

Independently tested to ISO 8573-1 Class 0 for total oil, including vapour. Certificate supplied with every machine.

No condensate to treat

Nothing oily leaves the machine, so there is no oil-water separator to buy, maintain or explain to an environmental inspector.

No filtration pressure drop

You are not pushing air through three stages of coalescing filters, which typically saves 0.4 bar and the energy that goes with it.

Lower risk, not just lower oil

Removes the single point of failure that ruins batches in food, pharma and electronics plants.

机器是怎么造的

两根转子在机壳内转动,彼此从不接触,之间也没有任何润滑剂。同步齿轮保持间隙,而这个间隙靠的是加工精度,不是一层油膜。

因为没有任何介质喷入压缩腔带走热量,热量只能经由机壳和中间冷却器散出。这就是为什么同样产气量的无油机在体积上比喷油机更大,也是为什么冷却设计才是决定它寿命的那一部分。

磨损件是转子涂层,不是轴承面。只要把它控制在温度限值之内,它可以用很多年;控制器存在的主要意义,就是把它控制在那里。

  • 同步转子,彼此从不接触
  • 气路中任何位置都没有润滑剂
  • 按 ISO 8573-1 Class 0 认证
  • 级间中冷
  • 风冷或水冷
  • 下游不需要油水分离器
  • 不必为聚结过滤器的压差买单
  • 可选变频

控制器做的事

控制器盯着对涂层转子而言要紧的那些温度,并在它们变得要紧之前停机——这和喷油机上控制器做的事并不是同一件工作。

压力、负载、运行小时、两级温度和保养倒计时都在主页面上。级温趋势才是工程师要读的数字,因为它远在任何部件失效之前就开始移动。

它可与其他机器联控,维持一个压力带而不是一个数字,并按班次时钟运行,这样工厂不会在凌晨三点为没有人制造 Class 0 空气。

  • 两级温度均有监测并记录趋势
  • 压力带控制
  • 以小时计的保养倒计时
  • 与其他机器联控
  • 用于启停的班次时钟
  • 标配远程监控
  • 故障记录保存在机器上
  • 断电后自动重启

配件与保养套件

无油机的保养套件主要是滤芯、密封件和轴承保养,而不是油气分离芯和油品,因为气路中根本没有油需要分离。

齿轮箱和轴承是按计划更换的项目。它们按运行小时更换,而不是按状态;按时做到这一点,正是转子涂层得以完好的原因。

每一套件都按序列号核对。我们还随机提供 Class 0 证书,并在任何可能影响它的作业之后重新出具,因为审核时会要。

  • 按周期更换的空气滤芯与密封件套件
  • 按计划进行的轴承与齿轮箱保养
  • 含中间冷却器清洗
  • 提供 Class 0 证书,并在作业后重新出具
  • 按您的序列号核对
  • 在我们做生意的每个国家都有本地库存
  • 可提供主机头置换
  • 服务方案下固定价格

机型范围

风冷

GAC-F 1515 kW / 20 hp
8 bar g
2.30 m³/min
噪声级
68 dB(A)
重量
672 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-F 2222 kW / 30 hp
8 bar g
3.50 m³/min
噪声级
68 dB(A)
重量
691 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-F 3737 kW / 50 hp
8 bar g
5.86 m³/min
噪声级
71 dB(A)
重量
960 kg
外形尺寸 长 x 宽 x 高
1686 × 886 × 1657 mm

水冷

GAC-F 1515 kW / 20 hp
8 bar g
2.30 m³/min
噪声级
65 dB(A)
重量
624 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-F 2222 kW / 30 hp
8 bar g
3.50 m³/min
噪声级
65 dB(A)
重量
643 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-F 3737 kW / 50 hp
8 bar g
5.86 m³/min
噪声级
61 dB(A)
重量
860 kg
外形尺寸 长 x 宽 x 高
1686 × 886 × 1657 mm

变频

GAC-FV 15变频15 kW / 20 hp
5 – 10 bar g
0.32 – 2.34 m³/min
噪声级
67 dB(A)
重量
687 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-FV 22变频22 kW / 30 hp
5 – 10 bar g
0.68 – 3.45 m³/min
噪声级
67 dB(A)
重量
687 kg
外形尺寸 长 x 宽 x 高
1309 × 848 × 1612 mm
GAC-FV 37变频37 kW / 50 hp
5 – 10 bar g
1.09 – 6.87 m³/min
噪声级
71 dB(A)
重量
995 kg
外形尺寸 长 x 宽 x 高
1722 × 920 × 1659 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

How do the rotors avoid touching without oil?

They are held in mesh by precision timing gears, so they never contact each other or the housing. That is why the tolerances and the price are both higher.

What certificate comes with the machine?

An ISO 8573-1 Class 0 certificate covering total oil content including vapour, issued from independent testing.

What is the rotor coating for?

It seals the small clearances and resists corrosion in place of oil. Coating condition is what the scheduled inspection actually checks.

How long do these machines last?

Comparable to an oil-injected screw when maintained correctly. The wearing items are the bearings, seals and the coating rather than an oil circuit.

Do I lose efficiency compared with oil-injected?

At full load a single-stage oil-free machine is slightly less efficient. Two-stage recovers that and more, which is why most oil-free installations above 37 kW are two-stage.

What air quality do I actually get?

No measurable oil, plus whatever particulate and dew point your downstream treatment provides. Oil-free solves one of the three ISO classes, not all three.

Can I retrofit oil-free instead of my existing machine?

Yes, and it usually simplifies the installation: you can remove the coalescing and carbon filter stages and the oil-water separator with it.

What is the noise level?

Similar to an equivalent oil-injected machine in a canopy. Gearbox noise is the difference and it is contained within the enclosure.

Is a receiver still needed?

Yes, exactly as with any compressor: to steady pressure, catch condensate and stop short-cycling on a fixed-speed unit.

What are the running costs?

Energy dominates as always. Consumables are lower than an oil-injected machine because there is no separator element and no oil, but scheduled interventions are more specialised.

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