Mysterious compressor device

[dougy83]

Hi,

I found this mostly unmarked white plastic device, containing a dual-stage vacuum pump that appears to draw air through some sheets of waxy plastic/paper sheets. There is a coarse foam filter near the sheets, a cooling fan blowing on the pump, a control PCB with a few power devices and a pic16f54, and a small user interface with "Set and "On/Off" buttons, and three LEDs. The outlet is a ~4mm tube.

Any ideas what this is?

Cheers!

 

[KMoffett]

Any manufacturer/model on the bottom of the case?

Ken

 

[dougy83]

No markings on the outside, other than the user interface. Inside, there are some codes on the PCB, e.g. DZYJ, and some component IDs. Pretty blank, unfortunately.

 

[dknguyen]

Just a coarse air filter???

 

[KMoffett]

The hose fitting on the end (picture 2) looks like one for a CPAP pump, or any other medical air patient hose.

Ken

 

[dougy83]

Just a coarse air filter???

There's a replaceable coarse foam pad on the outside of the device, presumably to catch large dust and lint. I assume that the waxy sheets that the compressor's sucking through provide finer filtration. It probably is just a compressor with air filter, like you said.

The hose fitting on the end (picture 2) looks like one for a CPAP pump, or any other medical air patient hose.

The hose is tiny (like 4mm diameter), so I don't think it's a CPAP, but maybe a medical device; perhaps it's for a nebulizer or similar.

Well, that's kinda boring. The pump has a 3 phase motor with feedback, which is slightly more interesting though.

Thanks for your thoughts!

 

[kimbear]

Possibly a Aquarium Pump??