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Using a ring (regenerative) blower
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progen |
Posted on 09/21/2021 12:30 PM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Has anyone used a ring or regenerative blower for their DIY fluid bed build and can you let me know the specs and batch weight? |
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renatoa |
Posted on 09/22/2021 1:29 AM
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![]() Administrator ![]() Posts: 2158 Joined: September 30, 2016 |
You mean the blower itself, or the air recirculation solution ? Any full metal turbine blower should be appropriate for this job, if the motor is outside the turbine can, and cooled by an impeller. From what I read, if the intake air for heater is 70 C degrees, the power required to perform the roast is halved. To have a reference, the air exhausted by my cyclone is 80 C degrees. Hope it helps. |
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progen |
Posted on 09/22/2021 3:59 AM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Hi Renatoa, I meant for the loft blower itself. |
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CK |
Posted on 09/22/2021 1:47 PM
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![]() 1/2 Pounder ![]() Posts: 200 Joined: December 07, 2018 |
Here's a beauty! Sputnik3. Fasten your belts and prepare for takeoff. |
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progen |
Posted on 09/23/2021 2:35 PM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Any idea of that blower's rating? |
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renatoa |
Posted on 09/23/2021 3:20 PM
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![]() Administrator ![]() Posts: 2158 Joined: September 30, 2016 |
Isn't the same as for a cold air unit ? The fact the air is hot affects the power consumption only, I think... the airflow should be the same, to get same lift... So the standard FB design guidelines are preserved. |
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CK |
Posted on 09/23/2021 9:40 PM
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![]() 1/2 Pounder ![]() Posts: 200 Joined: December 07, 2018 |
Quote Not sure, but it is easily used for their 320 grams charge weight... it was shown running at 18% on the LCD2004 in the bottom video. I think it's always better to over design prototypes because it gives more headroom for experimenting on larger capacities. |
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progen |
Posted on 09/29/2021 9:05 AM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Quote CK wrote: Quote Not sure, but it is easily used for their 320 grams charge weight... it was shown running at 18% on the LCD2004 in the bottom video. I think it's always better to over design prototypes because it gives more headroom for experimenting on larger capacities. Thanks so much for that. I did manage to contact one of them and the blower was a 750 watt 1hp one. A blower of that rating can be had at around USD160 - 170 in my country. USD70 more if I want it right away because I live within walking distance of two blower specialists. My aim is to build a 1.2 - 1.5kg green weight roaster so that should be plenty of power. |
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renatoa |
Posted on 09/29/2021 9:38 AM
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![]() Administrator ![]() Posts: 2158 Joined: September 30, 2016 |
I would try first a 500W leaf blower, they are very cheap, less than $20 here. When attempted to use mine for 500 grams beans cooling the result was a tornado of beans in my whole kitchen... ![]() But... it's hard to find if the blower has metal turbine for these models... so the regen part is under question sign. |
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progen |
Posted on 10/07/2021 12:42 PM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Quote renatoa wrote: I would try first a 500W leaf blower, they are very cheap, less than $20 here. When attempted to use mine for 500 grams beans cooling the result was a tornado of beans in my whole kitchen... ![]() But... it's hard to find if the blower has metal turbine for these models... so the regen part is under question sign. Those blowers are even cheaper in my country. Can get a 750w one for USD10. When you used your 500w one, was it on full power? |
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renatoa |
Posted on 10/07/2021 2:20 PM
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![]() Administrator ![]() Posts: 2158 Joined: September 30, 2016 |
The model I tested has a simple on-off button, not a proportional trigger, so yes, at full. Was just a capability test, immediately after purchase, just unpacked. |
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progen |
Posted on 10/08/2021 5:43 AM
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![]() Newbie ![]() Posts: 27 Joined: December 17, 2019 |
Thanks for the information, Renatoa. I did look at many of them but decided to spend a bit and get a regenerative blower since it was on sale. 750W 1HP for slightly below USD150 to my doorstep. I was looking at the three phase one actually but with the VFD, it'd have come up closer to USD250 and I already had the inline dimmer so I went with the single phase version instead. |
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CK |
Posted on 05/02/2022 10:23 AM
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![]() 1/2 Pounder ![]() Posts: 200 Joined: December 07, 2018 |
Progen, do you have any pictures or videos that you'd like to share of your machine?![]() Technivorm Moccamaster, Breville SGP, Transparent Roaster, Roaster908
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