 VACUUM PUMP of AIRZERO
vacuum packaging machines |
| • Note : OIL-LESS PUMP and OIL PUMP are much bigger and heavier than EJECTOR so that it cannot be equipped to desktop type suck as AZ-450E |
| Ejector vacuum’s merit |
| AIRZERO vacuum sealer’s vacuum pumps are multi-stage ejectors. The energy supply is pressured gas, usually dry and filtered compressed air between 5~6bar. The multi-stage ejectors make better use of the energy in compressed air than a single ejector and therefore consume less energy. Large vacuum flows and high levels of vacuum are characteristic of multi-stage ejector. Energy usage can be reduced further by taking advantage of EJECTOR Energy Saving System. A pneumatic system, maintain the pumps air consumption at a minimum level by shutting off the pump when the desired vacuum level is reached. The pump restarts if the vacuum level decreases below an acceptable level. The pump must be equipped with a non-return valve.
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The merits of MULTI-STAGE EJECTOR are as below :
1. No electrical
2. Lowest noise
3. Never break down (no repair & no maintenance)
4. Fast response
5. No heat emission
6. No spark (available in chemical industry)
7. Easy to install
8. No vibrations
9. No oil mist |
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| Features |
Multi-stage Ejector |
General Ejector |
Motor Driven Pump |
| Fundamental Design and Configuration |
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| Energy Source |
Compressed Air |
Compressed Air |
Electric Motor |
| Energy Consumption |
Low particularly when using air saving kit and when pump is used only on demand |
High relative to performance |
High because pump has to run continuously regardless of application |
| Heat Production |
None |
None |
High |
| Operating Noise Level |
Low( approx. 50-60dBA) |
High(Approx 75dBA) |
High above 75dBA |
| Ease of Installation |
Easy, quick and cost effective, very little space required, lightweight and easy to mount local to requirement |
Simple |
Difficult, electrical control required for motor, large space needed with robust construction to mount motor and pump. Large control valves needed |
| Servicing |
Non required |
Not easy to dismantle |
Regular servicing required |
| Response Time |
Immediate |
Almost Immediate |
Slow |
| Ability to produce high vacuum flows combined high vacuum levels |
Possible with lots of pump options |
Not possible |
Possible but long evacuation times |
| Resilience to Corrosive and Hazardous Environments |
Very Good due to no moving parts and PPS housing |
Dependant on housing material |
Special pumps required |
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| Ejector pump VS Oil-less pump VS Oil pump |
| • Max. Vacuum is the measured when it is not attached to the body. |
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| EJECTOR PUMP |
| Model No. |
Maximum Vacuum capacity (Kpa) |
Displacement speed
(l/min) |
Con-sumed air(l/min) |
| VTX -20 |
80 |
124 |
86~96 |
| VTM -50 |
80 |
647 |
150~200 |
| * Compressor is impossible to be built-in |
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| OILLESS PUMP |
| Model No. |
Maximum Vacuum capacity (Kpa) |
Displacement speed
(l/min) |
Con-sumed electricity (W) |
| 275V |
90 |
75 |
150 |
| 2120V |
89 |
105 |
200 |
| * Compressor is possible to be built in, in the case ogf sub-stand attached model. |
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| OIL PUMP |
| Model No. |
Maximum Vacuum capacity (Kpa) |
Displacement speed
(l/min) |
Con-sumed electricity (W) |
| SVO-100 |
101.3 |
100 |
250 |
| MVO-010 |
101.3 |
200 |
450 |
| MVO-020 |
101.3 |
400 |
950 |
* Compressor is possible to be built in, in the case ogf sub-stand attached model.
* MV0-010 & MV0-020 Models are only for AZV
* Compressor built-in possible |
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- VTX-20 is used for all model but AZV-type while VTM-50 is used for AZV-type
- As you can see at the above graph, Ejector’s vacuum is very speedy even though the size is much smaller than Oil-less pump and Oil pump. So, in many cases, Ejector is better to choose than Oil-less pump and Oil pump in various views including work efficiency and maintenance convenience, etc
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