Thread Number: 42279  /  Tag: Small Appliances
Vacuum idea
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Post# 444975   8/21/2021 at 22:27 (411 days old) by Lesinutah (Utah)        

lesinutah's profile picture
I just watched a few you tube videos and came across a couple ideas.
I'm going to use Kirby for explanation purposes. Kirby has a brushed motor. The brushes create carbon and dirty the vacuum. Brushless motors have no carbon output and are far more effecient and last longer. You change the Kirby brushed motor with a brushless motor.
The second part is to do with power. The Kirby runs power through a cord. If you took out the cord converted the vacuum to battery power. I know there's advantages to both. Lithium if managed right can provide the needed power without the overheating issue. The vacuum could have 3 or 4 batteries and once one heats up switch to the other battery. If they can run lawn mowers on lithium ion batteries why not use that technology with vacuums.
I know there are good battery powered vacuums out there. I'm thinking it would have to be robust to move a heavier vacuum.
Imagine a brushless motor no emissions released. More power and last much longer.
I'd think you could put batteries in motor housing or maybe a pack on the side.
It could be done by someone with money knowledge and patience.
Which do you guys think.


Post# 444978 , Reply# 1   8/22/2021 at 00:05 (411 days old) by tolivac (Greenville,NC)        

I was thinking the same sort of thing-RLI could look into making new Kirbys cordless. I have a Proteam cordless vacuum that uses a 92V Lithium battery pack.It could also run from line power with a cord.Figure if ProTeam could do this-how bout Kirby?With the Kirby since the motor runs at a higher speed with the hose-this could shorten the run time with a battery.

Post# 444989 , Reply# 2   8/22/2021 at 10:14 (411 days old) by human (Pines of Carolina)        
Durability?

human's profile picture
The only problem with this scenario is it would require circuit boards, which are also de facto self-destruct devices. That's great if you only expect the machine to last a couple of years but who'd pay Kirby prices for that? The ability to last for decades is a huge part of Kirby's value proposition. Take that away and you might as well go to Wally World and grab yourself a bagless plasticrap vac.

Post# 444996 , Reply# 3   8/22/2021 at 12:42 (411 days old) by Lesinutah (Utah)        
Durability

lesinutah's profile picture
Your wrong. Toyota is the biggest manufacturer of cars in the world. There quality is second to none. Robot vacuums exist and are quite durable. Self mowing battery powered lawn mowers exist.
If you continuously make quality durable items cost of production goes down.
Milwaukee makes imo the best quality tools.
If you want quality and durable items they will cost more. If the leaders in tools and automotive industry make durable items with the highest quality. The lumping circuit boards aren't not just good quality but the best quality. Toyota and Milwaukee use circuit boards. Milwaukee is number two in sales and Toyota is number 1. Quality durability using batteries and circuit boards don't equal too much money.
I buy Toyota because there not going to break down very often. Toyota costs more but #1 in the world throws the notion you base your argument on.
The reason plastic vacs at Walmart are so cheap is because they sacrifice quality and durability for mass production.
If you want the best vacuum you don't go to Walmart
If you want the best car you don't buy the cheapest. If you want the best tools you don't go to harbor freight. If you think a high quality battery powered vacuum can't be done is being close minded.
You get what you pay for. The top companies with high quality and durable items don't go bankrupt.



Post# 445028 , Reply# 4   8/22/2021 at 23:33 (410 days old) by MadMan (Chicago, IL, USA)        

madman's profile picture
Technically, a BLDC motor is kind of superfluous on a battery-powered machine. (Granted they have advantages.) A brushed permanent magnet DC motor would do the trick. I wonder what kind of motors the battery-powered lawn mowers use?

Post# 445034 , Reply# 5   8/22/2021 at 23:55 (410 days old) by tolivac (Greenville,NC)        

Battery mowers now use brushless motors.Before they used brushed motors.I have both-not much difference in performance between them.Circuit boards in cordless tools and mowers hold up quite well.Normally I am not a fan of boards either,but if they are of decent quality and properly heat sinked power components they will hold up well.Cordless tools are now going to brushless motors.I have both DeWalt and Milwaulkee corded and cordless tools-both are high quality.


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