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Cyclone Vacuum Separator
James Dyson · Public domain (expired patent)
Emma

Imeundwa na

Emma

22. Septemba 2026SE
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Cyclone Vacuum Separator

Spangler's cleaner, already published, pulls air through a bag: the bag is both the filter and the bin, so suction falls away as it fills. James Dyson, who had used industrial cyclones in a sawmill, put the same idea in a cleaner - and then a second, finer cyclone behind the first, so both grit and dust come out of the air before any filter. **US 4,593,429**, "Vacuum cleaning appliance", Dyson, filed 14. August 1984, granted 10. June 1986: a lower-efficiency outer cyclone and a high-efficiency inner cyclone in series, so "dust bags are not required". **You build the outer cyclone** from a bottle and pipe on a workshop vacuum, and weigh what it separates - sawdust and flour - to find where it stops working, and how far a home-made cyclone falls short of the textbook.
Kati
3 hours

Maagizo

1

Cut the body

Cut the bottom from a 2 litre bottle: that is the cone, open end down into a jar. The neck end carries the outlet.

Vifaa kwa hatua hii:

Chupa ya plastiki ya kinywaji (lita 2)Chupa ya plastiki ya kinywaji (lita 2)1 kipande
Chupa ya KiooChupa ya Kioo1 kipande

Zana zinazohitajika:

Kisu cha kazi za mikonoKisu cha kazi za mikono
Miwani ya usalama iliyo waziMiwani ya usalama iliyo wazi
2

Tangential inlet

Cut a 20 x 45 mm slot high on the bottle's side and glue in a short PVC pipe so the air enters along the wall, not towards the middle. This is what makes the air spin.

Vifaa kwa hatua hii:

Bomba la PVCBomba la PVC1 kipande
Kizibo cha SilikoniKizibo cha Silikoni20 ml

Zana zinazohitajika:

Kisu cha kazi za mikonoKisu cha kazi za mikono
Rula ya chumaRula ya chuma
3

Vortex finder

Fit a pipe down the centre from the neck so it reaches just below the inlet slot: clean air leaves up this tube. Seal round it. Connect the vacuum to the tube and the inlet to the hose.

Vifaa kwa hatua hii:

Mkusanyiko wa Viungio vya Bomba la PVCMkusanyiko wa Viungio vya Bomba la PVC1 seti
Mrija wa vinili angavuMrija wa vinili angavu1 mita

Zana zinazohitajika:

Bastola ya gundi ya motoBastola ya gundi ya moto
Utepe wa kufunikaUtepe wa kufunika
4

A filter you can weigh

Tape a weighed coffee filter paper over the vacuum's own inlet as a catch filter. Everything the cyclone misses lands there.

Vifaa kwa hatua hii:

Vichujio vya kahawa / karatasi ya kuchujaVichujio vya kahawa / karatasi ya kuchuja2 vipande

Zana zinazohitajika:

Mizani ya dijitali ya usahihiMizani ya dijitali ya usahihi
5

Feed it two dusts

Weigh 50 g of sawdust and feed it slowly into the hose with the vacuum running. Weigh what lands in the jar and what the stocking gained. Repeat with 50 g of flour, and once more with the cyclone bypassed.

Vifaa kwa hatua hii:

Vumbi la msumenoVumbi la msumeno50 g
Unga wa ngano wa kawaidaUnga wa ngano wa kawaida50 g

Zana zinazohitajika:

Kisafisha utupu cha karakanaKisafisha utupu cha karakana
Mizani ya dijitali ya usahihiMizani ya dijitali ya usahihi
6

Cut size and your efficiency

Inapakia daftari la Jupyter…
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History & Context

**What the patent specifies:** two cyclones in series - a coarse one and a fine one - so no dust bag is needed and the air leaving is substantially clean. **Modern build (derived):** the coarse stage alone, on a workshop vacuum, with a weighed filter behind it. Cyclones were old in industry - sawmills and cement works had used them for a century - and the invention was bringing them, in series, into a domestic cleaner. Their limits: fine dust below the cut size still needs a filter, cyclones cost pressure drop, and a full bin upsets the flow.
Hatua 7 - Image 1

Vifaa

9

Zana Zinazohitajika

7

Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Spangler Vacuum Cleaner

Spangler Vacuum Cleaner

na MartinNO

TEKNOLOJIA

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