Hi guys, I need to make a simple vacuum cleaner with a "5VDC" motor. The idea is that the motor pulls the dust, but it does not pull it in itself. There is some filter or something that protects it.

 

Have you ever looked at how a vacuum cleaner is made? There are many battery powered hand held vacuum cleaners that can be found for less money than you or anyone can make one. And just a hint, the filter goes before the vacuum motor and turbine assembly.

 

We are not really friends?

I don't want to buy 1 to disassemble it, I just need a smal "5VDC" similar device.

 

I don't know if this is good or bad, but it's under $20 and battery powered, which is probably less than you could make something comparable. And a better looking one for $25.

The two common methods are (1) pulling air through a bag or filter that filters the air, then the filtered air goes over/through the vacuum motor, and (2) physically separate the impeller and motor using a separate fan to cool the motor. The first is more common in home type vacuums, the second is more common in shop vac and wet/dry vac, maybe some small hand held vacs, etc.

Here's one that runs on USB (5V) already made, under $10!

 

The basic shape of a vacuum cleaner is: a box with a hose attached to it + a filter inside the box which allows the air in the box to get to a fan wheel. The fan wheel spins really fast to eject the air it just sucked through the filter.

You can attach your 5V motor to a fan blade such that the center of the fan is exposed to the inside of the filter and the edges of the fan eject air to the atmosphere in the room. The hard part (in my mind) is getting a fan blade which effectively uses up the power and speed of your motor. How well you manage that is how well this is going to work.

 

The vast majority of Vacuum motors are high rpm with Radial type fan, i.e. tangential discharge.
As already posted there are several out there, cheap!
https://www.banggood.com/DC-3_7V-Va...olenoid-Valve-p-1071993.html?cur_warehouse=CN
Max,

 

Grainger has quite a selection of vacuum motor/wheel combinations, but they are not 5V! The idea of creating a useful vacuum with 5V stretches my imagination.

 

We are not really friends?

I don't want to buy 1 to disassemble it, I just need a smal "5VDC" similar device.

You only think were not friends. Just because I won't let you say untrue things. You will spend more money trying to do this on your own and not have something that works near as good. But your going to do it your way, I tried.

 

Why are people always trying to reinvent the wheel ? Or the vacuum cleaner as it were? There is another post where the TS is trying to reinvent the motorized blind. There are some things better left to those that make those things for a living. Too many other projects out there that you can't just go out and buy.

 

Why are people always trying to reinvent the wheel ? Or the vacuum cleaner as it were? There is another post where the TS is trying to reinvent the motorized blind. There are some things better left to those that make those things for a living. Too many other projects out there that you can't just go out and buy.

There can be various reasons.
0. To learn how its made and gain some experience.
1. I will use it for something else.

I want a small model that will have some efficiency, enough for my needs. I don't want to buy a ready one, the whole point of being a technician is to be able to build it for yourself, cheaper. But in now a days iconomic we lost even that.

I will try to look up the ready ones, if I have time.
Thanks to everyone for their posts.

 

There can be various reasons.
0. To learn how its made and gain some experience.
1. I will use it for something else.

I want a small model that will have some efficiency, enough for my needs. I don't want to buy a ready one, the whole point of being a technician is to be able to build it for yourself, cheaper. But in now a days iconomic we lost even that.

0. There are other ways of learning how they are made and how they work, there is a wealth of knowledge today on the internet, things that weren't available when I was a boy. Unless you have a way of making things, a machine shop or for this project a tin shop, and a way of balancing the turbine wheel you are going to have a hard time doing this project. Not trying to put you down or be mean to you just stating real, practical facts.

1. Maybe you should give the requirements of your purpose?


It must be different in your part of the world, a technician here is usually responsible for keeping something working, not making them. YOU WILL NEVER BUILD THIS AS CHEAPLY AS YOU CAN BUY IT! If this is your reason for doing this you're wrong, there is a thing called 'economy of scale'. Economy of scale means that you can make thousands or millions of a thing, anything, for a smaller cost, again just cold hard facts. Even if you have complete access to the tools and materials, if your time is worth any thing at all, it's cheaper to buy something small like this and repurposed it to your needs.

 

We need an update on this thread. How is your home made vacuum working?