Self-build pellet burner

Present your DIY projects, your new technical ideas, your innovations to test or your self-construction work. Because doing it yourself is often more economical and can be more efficient.
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Forhorse
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View Forhorse » 19/01/14, 15:57

As I said above this is my idea. But it is not easy to find a small fan motor sorting.
The smallest I found all are already at least 200W
If this is to rotate to 10Hz normally it's not worth it.
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dede021385
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View dede021385 » 19/01/14, 17:49

It's not found, I wanted to go on a drive to the top.
My fan made 30w ...
Varying the rate will not bring you much, the oil burners in variable manners does not play on the speed of the fan but on a piloted air flap.
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sapeur3873
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View sapeur3873 » 19/01/14, 19:43

My burner Pellet plays him on the fan speed.
I think the fan is 12 or 24v and drive too.
it is easier to find.
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dede021385
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View dede021385 » 21/01/14, 12:07

Here is the latest program, after one week, is developed,
no flaws, modulation impeccable operation.

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I Citro
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View I Citro » 21/01/14, 12:30

sapeur3873 wrote:My burner Pellet plays him on the fan speed.
I think the fan is 12 or 24v and drive too.
it is easier to find.
It is also the configuration VMC Double Flow, equipped with 2 dc motors.
This choice is quieter and more economical.
It is especially more logical to play on the speed of a fan to regulate the flow rate than to ventilate "thoroughly" and to regulate with a shutter which mainly generates WASTE of energy.
:x It is on econology, damn ...

I would add that the thermal regulation should then be proportional, ie between optimum fan speed and set temperature.
A "regulation" by shutter generates hot spots that are harmful to the reliability of the assembly ...
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dede021385
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View dede021385 » 21/01/14, 13:06

My goal is to Recycling materials to make a cheap burner, I will not buy a DC turbine xxx € + regulates a system ...

The air damper is very good and inexpensive
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Forhorse
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View Forhorse » 21/01/14, 16:22

citro wrote:It is especially more logical to play on the speed of a fan to regulate the flow rate than to ventilate "thoroughly" and to regulate with a shutter which mainly generates WASTE of energy.
:x It is on econology, damn ...


Not quite, because a fan behaves more or less like a centrifugal pump.
Consumption depends on the fluid flow.
theoretically the consumption of a pump (or blower) having no flow (suction fully closed) is not higher than the idling engine consumption.

Between a fan with asynchronous motor and regulation by component, and a fan with DC motor controller + + buck, I'm not sure that performance is favorable to the latter, or if it is, it is not probably not by much.
Is this low performance gain justifies the additional components (= production + recycling) that this solution requires?

Do not forget that a DC motor requires maintenance (replacement brush)
I know whereof I speak, I work in a factory where there is still a lot of DC motor which oblige us to maintain a large stock of brooms.
Given the great difficulty for an individual to source replacement brushes, this implies a more or less regular replacement of the engine (so again maintenance and disposal of equipment requiring recycling while it is theoretically not out = waste to use) and a risk of failure if maintenance is not assured.

This may be a deformation of a professional, but I tend to banish any DC motor for my achievements.
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dede021385
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View dede021385 » 21/01/14, 16:57

Well I changed my fan modulation mode, I added a dimmer, those of our parents with the slide potentiometer.
it works great and I divided the conso by 2 modulation, by against mandatory addition of a starter condo. : Cheesy:

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I Citro
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View I Citro » 21/01/14, 22:43

Forhorse wrote:Do not forget that a DC motor requires maintenance (replacement brush).
:| Sorry, I misspoke, I thought of brushless motors ... For who need a suitable controller but are maintenance and superb performance.
... The habit of thinking "electric vehicle" therefore running on battery ... Sorry. :?
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dede021385
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View dede021385 » 22/01/14, 16:25

Small asks mods, can I change the subject title ??
"Self-construction pellet condensing boiler"
Thank you
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