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Optimise geometry of rotating valves for an open source ventilator project

$30-250 USD

Cancelled
Posted almost 4 years ago

$30-250 USD

Paid on delivery
I have a design for controlling the timing and duration of flows to and from a patient from a ventilator. Behind these four thin rotatable disks is a turning disk with a quarter pie shaped hole. The disk rotates from a high pressure side (inhale) to a low pressure side (exhale) and these four disks can be rotated to control the timing and duration of each side. They should not be symetrical since inhalation (aspiration) is short and fast, slight pause, and then slower exhale (expiration.) Change the holes of the four disks to give the best range based on normal breathing on a ventilator (lots of resources attached and online.) I also want you to simulate the flow and back pressure based on 100 litres per minute at a pressure of 50cmH2O and assuming a 2 meter 22mm CPAP hose and a 40mm valve disk diameter calculate the pressure drop through the small restricted opening of the short aspiration stage. Assume 1mm thick steel disks will be cut leaving sufficient material in the middle to support the disks on the central shaft. The disks will be rotated in pairs, one pair for aspiration, one for expiration. More details here: [login to view URL]
Project ID: 24791591

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6 proposals
Remote project
Active 4 yrs ago

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6 freelancers are bidding on average $177 USD for this job
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Hi there, This is Bogdan from Romania. I'm a mechanical engineer - specialized in the industrial robotic field, 3D designer, industrial designer and, 3D modeler. For some of my projects, I'm also doing the physical prototype too. I'm doing product design, industrial design, reverse engineering, ideation, etc. I have over 15 years of experience working on various systems/devices across multiple industries, from concept to launch. I would like to work on your project, but I really need some/more info about it... 1 - more info I've found on your contest :) 2 - how would you like to control the slotting of the combined valves?... in my opinion the only way to do it is to use a gear motor, but also the valves model needs to be changed - actually much improved... 3 - as you want to have both flow control and timing on the same device, you will need an electronic module to do this in accordance with the info from sensors and also working regime (peep, bipap, rs, pediatric/adult, humidity, etc, etc...) and I think an arduino or a raspberry pi could do the job (but I don't know to program any of them :( ) For any more questions, we could chat here, including the whole details of the project, final price, time frame, deliverables, etc, etc... Regards Bogdan
$140 USD in 7 days
5.0 (23 reviews)
6.4
6.4
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I have 12 years exp. in Machine and plant design for food processing industry. Help of solidworks ,autocad and creo.
$167 USD in 3 days
4.9 (5 reviews)
2.4
2.4
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hi. i am a mechanical engineer and I design alot of project on Solidworks, and completed the CFD project. i can help you in this project, please feel free to contact. BID amount is negotiable.
$250 USD in 3 days
5.0 (1 review)
1.0
1.0
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Hello Sir, I have worked on flow Analysis for more than 3 years and I sure that with my knowledge I can help you out in this project and provide you additional suggestion. In my 3 years of working, I have worked on multiple design of exhaust system design to decrease the back pressure and got success in that. My rate is negotiable so don't worry about the budget. If you are are happy with my proposal please leave me a message so that we can discuss further. Thank You
$130 USD in 7 days
0.0 (0 reviews)
0.0
0.0
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I am an algorithm developer for a large automotive OEM, will experience in optimization and simulation of mechanical systems.
$222 USD in 5 days
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Flag of CANADA
Ottawa, Canada
5.0
14
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Member since Sep 4, 2013

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