Open Source PAPR: Difference between revisions
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=Basics= | |||
*The formal name is "CAPR" or Controlled-Air Purifying Respirator | |||
*A Device Mainly Used as a filtered/safe air supply in enviroments where there IS oxygen, and the user can breath normally (as in lung function isn't impaired), but a chemical/biological/particulate hazard exists/is expected | |||
*Is essentially a forced air filter, with a hose leading to a mask | |||
*Typically is a belt with the power/controls/filter, then a tube to a mask/hood | |||
*A Similar "box" can feed a [[Positive Pressure Personnel Suit]] , a type of hazmat suit for bio uses (ie doesn't protect against heat (like firefighting "bunker suits" , or from certain liquids and/or radiation like other Hazmat suits | |||
*Many DIY devices are essentially adapted [[CPAP]] machines | |||
=Usage= | |||
*Hood and hose are discarded after each use - [https://www.massgeneral.org/assets/MGH/pdf/disaster-medicine/2019-Novel-Coronavirus-(2019-nCoV)-Toolkit-version-1.29.2020.pdf] | |||
*PAPR and general PPE protocols - [https://www.massgeneral.org/assets/MGH/pdf/disaster-medicine/2019-Novel-Coronavirus-(2019-nCoV)-Toolkit-version-1.29.2020.pdf] | |||
*Used in [[Biosaftey Levels]] 3 and 4 (Medical, Bioscience, etc) | |||
*Also useful for welding with large amounts of flux in non well ventilated spaces etc | |||
=Industry Standards= | |||
==Welding== | |||
*[https://www.millerwelds.com/safety/respiratory/powered-air-purifying-respirators-m00482#!/?product-options-title=papr-with-t94i-r-264575 A Welding Helmet and Respirator System by Miller] | |||
*[https://www.3m.com/3M/en_US/speedglas-welding-helmets-us/ 3M's Speedglass line] | |||
*All these go for ~1000-3000 USD (Welding Helmet part makes up the most, but still is most likely overpriced | |||
*They typically include the welding eye protection, the air system, a hardhat, a hood, and a system of all these being integrated, and "slidable"? | |||
==Medical/Biosaftey== | |||
*[https://www.3m.com/3M/en_US/company-us/all-3m-products/~/All-3M-Products/Personal-Protective-Equipment/Powered-Supplied-Air-Respirators/?N=5002385+8711017+8720539+8720547+3294857497&rt=r3 3M's Medical/Generic Devices] | |||
=Existing Open Source Devices= | |||
==2020== | |||
*WASP version - [https://www.3dprintingmedia.network/personalized-ppe-mask/] | |||
*Snorkeling masks turned to respirators - [https://www.3dprintingmedia.network/isinnova-shares-3d-printed-adapter-to-turn-snorkeling-mask-into-a-non-invasive-ventilator/] | |||
*<html> | |||
<iframe width="560" height="315" src="https://www.youtube.com/embed/oS6GA83nbds" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html> | |||
==2019== | |||
<html><iframe width="560" height="315" src="https://www.youtube.com/embed/lmNIEDDCqSk" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html> | |||
=Basic Design= | |||
==Container== | |||
*Either a backpack, like in the video, or a 3d printed "shell" | |||
==Power Supply== | |||
*The associated electronics | |||
*Preferabbly something swappable / [[Hot Swappable]] either (For Emergency need (ie we need something that "just works" NOW this may be a lesser need, even just throw a 9/12v battery in the backpack etc) | |||
**A OTS System such as RYOBI 18V etc | |||
**OSE System with the batteries in a 3d Printed shell with inserted metal contacts | |||
==Controlls== | |||
*Should be simple enough to use an arduino | |||
*Indicators of flow and status MAY be needed to reach proper capability (if it fails you NEED to know if in a "Hot Zone") | |||
==Blower Fan== | |||
*Something with '''X M^3/H ''' airflow (without filter) and '''Y M^3/H ''' airflow (with filter) | |||
*Either OTS or a 3d printed fan with ots motor, or fully open source | |||
==Filter Mount== | |||
*A Standard mount, and 3d Printed adapters for different cartriges | |||
==Filter== | |||
*Some sort of standard cartrige | |||
*Contractor grade face mask cartriges should work for welding | |||
*Due to the "END IS NEAR" supplies and the surplus military supplies, CBRN grade CAN be used, but is overkill and thus more expensive than need be in most applications | |||
*Standard Biosaftey cartrige? | |||
==Hose Adapter== | |||
*Standard? | |||
==Face Mask== | |||
*Standard CPAP? | |||
=BOM= | |||
* | |||
=CAD= | |||
* | |||
=Code= | |||
* | |||
{{Devtemplate|0=Open Source PAPR|1=0|2=0|3=0|4=0|5=0|6=0|7=0|8=0|9=0|10=0|11=0|12=0|13=0|14=0|15=0|16=0|17=0|18=0|19=0|20=0}} | {{Devtemplate|0=Open Source PAPR|1=0|2=0|3=0|4=0|5=0|6=0|7=0|8=0|9=0|10=0|11=0|12=0|13=0|14=0|15=0|16=0|17=0|18=0|19=0|20=0}} | ||
= | =See Also= | ||
* | *[[COVID-19]] | ||
*[[Ventilator]] | |||
*[[Open Source Pressure Swing Absorbtion 99% Nitrogen/High Percentage Oxygen Device]] | |||
[[PAPR]] | |||
=Useful Links= | |||
*[[CPAP]] | |||
Revision as of 22:17, 24 March 2020
Basics
- The formal name is "CAPR" or Controlled-Air Purifying Respirator
- A Device Mainly Used as a filtered/safe air supply in enviroments where there IS oxygen, and the user can breath normally (as in lung function isn't impaired), but a chemical/biological/particulate hazard exists/is expected
- Is essentially a forced air filter, with a hose leading to a mask
- Typically is a belt with the power/controls/filter, then a tube to a mask/hood
- A Similar "box" can feed a Positive Pressure Personnel Suit , a type of hazmat suit for bio uses (ie doesn't protect against heat (like firefighting "bunker suits" , or from certain liquids and/or radiation like other Hazmat suits
- Many DIY devices are essentially adapted CPAP machines
Usage
- Hood and hose are discarded after each use - [1]
- PAPR and general PPE protocols - [2]
- Used in Biosaftey Levels 3 and 4 (Medical, Bioscience, etc)
- Also useful for welding with large amounts of flux in non well ventilated spaces etc
Industry Standards
Welding
- A Welding Helmet and Respirator System by Miller
- 3M's Speedglass line
- All these go for ~1000-3000 USD (Welding Helmet part makes up the most, but still is most likely overpriced
- They typically include the welding eye protection, the air system, a hardhat, a hood, and a system of all these being integrated, and "slidable"?
Medical/Biosaftey
Existing Open Source Devices
2020
2019
Basic Design
Container
- Either a backpack, like in the video, or a 3d printed "shell"
Power Supply
- The associated electronics
- Preferabbly something swappable / Hot Swappable either (For Emergency need (ie we need something that "just works" NOW this may be a lesser need, even just throw a 9/12v battery in the backpack etc)
- A OTS System such as RYOBI 18V etc
- OSE System with the batteries in a 3d Printed shell with inserted metal contacts
Controlls
- Should be simple enough to use an arduino
- Indicators of flow and status MAY be needed to reach proper capability (if it fails you NEED to know if in a "Hot Zone")
Blower Fan
- Something with X M^3/H airflow (without filter) and Y M^3/H airflow (with filter)
- Either OTS or a 3d printed fan with ots motor, or fully open source
Filter Mount
- A Standard mount, and 3d Printed adapters for different cartriges
Filter
- Some sort of standard cartrige
- Contractor grade face mask cartriges should work for welding
- Due to the "END IS NEAR" supplies and the surplus military supplies, CBRN grade CAN be used, but is overkill and thus more expensive than need be in most applications
- Standard Biosaftey cartrige?
Hose Adapter
- Standard?
Face Mask
- Standard CPAP?
BOM
CAD
Code
See Also
- COVID-19
- Ventilator
- Open Source Pressure Swing Absorbtion 99% Nitrogen/High Percentage Oxygen Device