Creator of this project
CC_BY_SA
Mini Desktop Humidifier

Mini Desktop Humidifier

Source: Thingiverse

Summary

This 3D print requires additional parts.

See updated photos on wiring up control switch Wiring instructions:

  • Brown (-) and Green (+) from the Ultrasonic mister
  • Green wire goes in series with the switch, comes out as the red wire, joins back to the Step Down DC-DC Module (+IN)
  • Brown goes direct to -IN of Step Down module
  • Module has 2 solder holes per input, this make it easy to join the inputs (+IN and -IN) back out to the humidifier (after the switch), the switch simply becomes the ON/OFF control for everything.
  • Adjust to correct voltage (+OUT and -OUT) with your voltmeter
  • Connect +OUT and -OUT to your 30mm 12V DC Fan
  • NOTE: - IN and -OUT are effective the same connection
  • Congratulate yourself, job done!

Waterproofing your print, making it watertight Always a problem for any prints

  • On Cura, go to Expert menu -> Open expert settings (CTRL-E), increase infill overlap to 50%, try to increase infill, if possible, print 100%
  • With ABS, brush the inside with pure acetone
  • With PLA, brush with clear acrylic, e.g. Tamiya X-22, clear gloss coat*

BOM include:
1) Ultrasonic Atomiser (Search ebay for ultrasonic mist fogger, it's the black plastic version, 36mm diameter)
2) 30mm Fan (4 x 18mm screw for attachment)
3) 2 (height) x3 (diameter) mm neodydium magnets (Search ebay)
4) A Step down power converter module, (http://www.icstation.com/step-down-module-power-supply-p-2734.html)
5) Rectangle flashlight push button switch (http://www.ebay.co.uk/itm/3-Pcs-Rectangle-Flashlight-Latching-Push-Button-Switch-AC-250V-1-5A-/121759137697?hash=item1c5968ffa1:g:N3UAAOSwEetV9dkz)

You can use either a 'coke' PET bottle or Kikkoman Soy Sauce classic bottle (look nicer and it's glass).

The ultrasonic atomiser requires 18~24V, you can use any 19V laptop adpater for this purpose, old Dell and Acer's often uses regular 2.5mm DC plug.

The fan blower speed can be adjusted with the voltage step down module.

The humidifier blower is held in place simply with the magnets superglued into the inserts.

Ref: Transient high-frequency ultrasonic water atomization F. Barreras, H. Amaveda, A. Lozano http://ideafix.litec.csic.es/users/felix/2002-EinF-v33n3.pdf

Slider images
Name Date Size File
1. 67e8fad9796d3467a81fb0d18de61a77_preview_featured.JPG 2018-05-02 121.17 KiB
2. Capture_preview_featured.jpg 2018-05-02 43.28 KiB
3. DSC_1148_preview_featured.JPG 2018-05-02 78.08 KiB
4. DSC_1252_preview_featured.JPG 2018-05-02 75.99 KiB
5. DSC_1254_preview_featured.JPG 2018-05-02 87.2 KiB
6. DSC_1300_preview_featured.JPG 2018-05-02 73.69 KiB
7. Mini_humidifer_-_Kikoman_soy_suace_bottle_screw_mount_-_extended_base_preview_featured.jpg 2018-05-02 43.14 KiB
8. Mini_humidifer_-_Kikoman_soy_suace_bottle_screw_mount_preview_featured.jpg 2018-05-02 35.53 KiB
9. Mini_humidifer_-_Mouth_preview_featured.jpg 2018-05-02 40.61 KiB
10. Mini_humidifer_-_PET_2.7mm_pitch_bottle_screw_mount_-_extended_base_preview_featured.jpg 2018-05-02 41.19 KiB
11. Mini_humidifer_-_PET_2.7mm_pitch_bottle_screw_mount_preview_featured.jpg 2018-05-02 35.51 KiB
12. P1050160_preview_featured.JPG 2018-05-02 69.52 KiB
13. Psychometric_Chart_preview_featured.jpg 2018-05-02 93.26 KiB
14. a06be9765533f8ebb2a689ee243b270a_preview_featured.JPG 2018-05-02 97.24 KiB
15. b9e313264e0aba812169930be76b74cb_preview_featured.JPG 2018-05-02 84.35 KiB
16. switchbox_bottom_preview_featured.jpg 2018-05-02 32.18 KiB
17. switchbox_top_preview_featured.jpg 2018-05-02 33.54 KiB
List of Chart
Name Date Size File
1. Psychometric_Chart.pdf 2018-05-02 58.41 KiB
List of blueprints
Name Date Size File
1. Mini_humidifer_-_Kikoman_soy_suace_bottle_screw_mount.stl 2018-05-02 900.18 KiB
2. Mini_humidifer_-_Kikoman_soy_suace_bottle_screw_mount_-_extended_base.stl 2018-05-02 1.67 MiB
3. Mini_humidifer_-_Mouth.stl 2018-05-02 747.84 KiB
4. Mini_humidifer_-_PET_2.7mm_pitch_bottle_screw_mount.stl 2018-05-02 986.02 KiB
5. Mini_humidifer_-_PET_2.7mm_pitch_bottle_screw_mount_-_extended_base.stl 2018-05-02 1.14 MiB
6. switchbox_bottom.stl 2018-05-02 40.12 KiB
7. switchbox_top.stl 2018-05-02 49.01 KiB
3D Model

Copyright © 2018 ENVIENTA Association