Powered Air-Purifying Respirator: Difference between revisions
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*Typically is a belt with the power/controls/filter, then a tube to a mask/hood | *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 | *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= | =Usage= | ||
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*Also useful for welding with large amounts of flux in non well ventilated spaces etc | *Also useful for welding with large amounts of flux in non well ventilated spaces etc | ||
=Open Source= | =Industry Standards= | ||
=Existing Open Source Devices= | |||
==2020== | ==2020== | ||
<html> | <html> | ||
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==2019== | ==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> | <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> | ||
=Minimum Viable Product= | |||
==For COVID-19 Response== | |||
* | |||
==For Welding/Chemical Use== | |||
* | |||
==Biosaftey Lab/Biosaftey With High Standards, and No Emergency Need (IE NOT COVID-19) == | |||
* | |||
==Generic HAZMAT== | |||
* | |||
=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= | =See Also= | ||
Revision as of 12:55, 23 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
Existing Open Source Devices
2020
2019
Minimum Viable Product
For COVID-19 Response
For Welding/Chemical Use
Biosaftey Lab/Biosaftey With High Standards, and No Emergency Need (IE NOT COVID-19)
Generic HAZMAT
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