cre8.appliance.v1 · fan
Pedestal fan, 400 mm
The fan passes its checks
Pedestal fan takes 67 steps from 9 raw materials: 5 run here, 23 by partners, 39 are bought. The plan makes that 12 here, 16 by partners, 39 bought. 11 inputs are still opaque.
- Mass
- 6.57 kg
- Parts
- 27
- Airflow, top speed
- 1504 cfm at 1250 rpm
- Input, top speed
- 68.9 W
- Noise at 1 m
- 55.1 dB(A)
- Efficacy
- 21.8 cfm/W
Recipe
As recipe text
cre8.appliance.v1 kind=fan base_diameter_mm=400 base_mass_kg=2.5 blade_diameter_mm=400 blade_thickness_mm=2.5 blades=3 chord_mm=120 cord_m=1.8 cord_mm2=0.824 guard=steel_wire guard_clearance_mm=25 guard_pitch_mm=12 guard_wire_mm=2 height_mm=1150 hub_diameter_mm=80 insulation=b low_rpm=1000 mains_hz=60 mains_v=120 motor=psc motor_w=75 oscillate=true pitch_deg=15 poles=4 speeds=3 style=pedestal top_rpm=1250
Checks
| Check | Reads | Holds to | |
|---|---|---|---|
| Efficacy | 21.8 cfm/W at its worst speed | at least 10 cfm/W at every speed (assumed floor) | holds |
| Stall | 8.33% of the blade span past stall at the top speed | at most 25% | holds |
| Motor speed | 1250 rpm at the top speed of 1800 rpm synchronous | at most 1656 rpm | holds |
| Overload | 68.9 W drawn at the top speed | the motor's 75 W rating | holds |
| Winding heat | 51.4 K rise at 1250 rpm, 39.3 W lost | at most 95 K for its insulation class | holds |
| Cord | 0.824 mm² carrying 0.658 A | at least 0.5 mm² | holds |
| Guard | 10 mm openings, the finger stops short: reaches 1.39 mm past the guard | less than the 24 mm to the blades (ISO 13857 would ask 80 mm, for comparison only) | holds |
| Tipping | tips at 17.7°; blowing 5.55 N·m against 11.8 N·m to stand | stands on a 10° incline and while running | holds |
| Noise | 55.1 dB(A) at 1 m; blade pass 62.5 Hz | at most 60 dB(A) (assumed) | holds |
At each speed
| rpm | cfm | Air, m/s | Thrust, N | Input, W | Current, A | cfm/W |
|---|---|---|---|---|---|---|
| 1000 | 1203 | 3.47 | 3.09 | 44.1 | 0.387 | 27.3 |
| 1125 | 1354 | 3.91 | 3.91 | 55.8 | 0.49 | 24.2 |
| 1250 | 1504 | 4.34 | 4.83 | 68.9 | 0.605 | 21.8 |
Bill of parts
| Part | Group | Count | Formed by | Each | Materials (each) |
|---|---|---|---|---|---|
| Stator | motor | 1 | laminate | 506 g | electrical steel 506 g |
| Winding | motor | 1 | wind | 202 g | magnet wire 202 g |
| Rotor core | motor | 1 | laminate | 191 g | electrical steel 191 g |
| Rotor cage | motor | 1 | cast | 78.8 g | aluminium 78.8 g |
| Shaft | motor | 1 | turn | 67.5 g | steel rod 67.5 g |
| Bearing | motor | 2 | bought | 16.9 g | bearing 16.9 g |
| End bell | motor | 2 | stamp | 22.5 g | steel strip 22.5 g |
| Blade set | rotor | 1 | mould | 185 g | polypropylene 185 g |
| Spinner | rotor | 1 | mould | 15 g | abs 15 g |
| Motor housing | head | 1 | mould | 102 g | abs 102 g |
| Rear guard | head | 1 | wire form | 475 g | steel wire 463 g, powder coat 11.6 g |
| Oscillation gearbox | head | 1 | mould | 70 g | pom 70 g |
| Oscillation crank | head | 1 | stamp | 40 g | steel strip 40 g |
| Tilt bracket | head | 1 | stamp | 120 g | steel strip 120 g |
| Run capacitor | head | 1 | bought | 30 g | run capacitor 30 g |
| Front guard | final | 1 | wire form | 528 g | steel wire 463 g, steel strip 51.5 g, powder coat 13.2 g |
| Guard ring | final | 1 | mould | 248 g | abs 248 g |
| Fasteners | final | 12 | bought | 3 g | fastener 3 g |
| Lower tube | stand | 1 | tube | 304 g | steel tube 300 g, powder coat 4.83 g |
| Upper tube | stand | 1 | tube | 229 g | steel tube 225 g, powder coat 3.67 g |
| Height clamp | stand | 1 | mould | 40 g | abs 40 g |
| Base weight | stand | 1 | stamp | 2.5 kg | steel strip 2.5 kg |
| Base cover | stand | 1 | mould | 398 g | polypropylene 398 g |
| Switch housing | controls | 1 | mould | 40 g | abs 40 g |
| Switch contact | controls | 4 | stamp | 2 g | copper strip 2 g |
| Mains cord | controls | 1 | extrude | 52.3 g | pvc cord 25.7 g, copper strand 26.6 g |
| Mains plug | controls | 1 | bought | 30 g | mains plug 30 g |
6.57 kg in all, 6.49 kg carried by the stand (the cord and plug lie on the floor).
Made from
The longest chain is 8 steps; 0 of 32 made pieces have a published plan. The graph is make:pedestal-fan.
| Material | Per fan | From |
|---|---|---|
| Copper ore | 49.4 kg | mined: porphyry copper ore, about 0.6 % Cu |
| Iron ore | 9.35 kg | mined: hematite ore, about 62 % Fe |
| Coal | 3.46 kg | mined: bituminous coal |
| Limestone | 1.47 kg | quarried: limestone |
| Crude oil | 1.28 kg | drilled: crude oil |
| Bauxite | 418 g | mined: bauxite, about 50 % alumina |
| Natural gas | 90.1 g | drilled: natural gas, mostly methane |
| Quartz | 85 g | quarried: high-purity quartz lump |
| Salt | 25.5 g | mined: rock salt or solar brine |
| Steel scrap | 1.72 kg | recovered: collected: sorted steel scrap |
| Caustic soda for the Bayer liquor | 13.4 g | recovered: taken from chlor-alkali cells, where it comes off beside chlorine |
Where buying starts
- Alloy and roll electrical steel
- Cast rod, draw and enamel magnet wire
- Electrolyse alumina to aluminium
- Roll steel rod
- Make the bearing
- Roll steel strip
- Polymerize propylene
- Graft and compound ABS
- Draw steel wire
- Trimerize and polymerize acetal
- Make the run capacitor
- Roll-form and weld steel tube
- Cast and roll copper strip
- Extrude the mains cord
- Make the mains plug
- Head, roll and plate fasteners
Still opaque
| Input | Per fan | What is missing |
|---|---|---|
| Prebaked carbon anode | 36.4 g | calcined petroleum coke and coal-tar pitch; not drawn yet |
| Polyester powder coat | 35 g | polyester resin, curing agent and pigment; not drawn yet |
| PVC plasticiser | 13.7 g | DINP or DOTP from oxo alcohols and phthalic or terephthalic acid; not drawn yet |
| Capacitor metallization and potting | 10.5 g | zinc-aluminium film metallization and potting resin; not drawn yet |
| Magnet wire enamel | 6.26 g | polyester-imide or polyamide-imide enamel; formulation not disclosed |
| Zinc for brass | 3.88 g | zinc metal; its mine and smelter are not drawn yet |
| Aluminium fluoride | 1.73 g | from fluorspar or fluorosilicic acid; not drawn yet |
| Bearing chromium, cage and grease | 1.01 g | the 1.5 % chromium of 52100 steel, the pressed cage and the grease; not drawn yet |
| PVC heat stabiliser | 0.914 g | calcium-zinc stabiliser package; formulation not disclosed |
| Zinc plating | 0.36 g | zinc and passivate chemistry; the zinc's mine is not drawn yet |
| Ziegler-Natta catalyst | 0.185 g | titanium chloride on magnesium chloride; the makers do not disclose the recipe |
Who makes it
Today 5 steps run here, 23 by partners and 39 are bought. The plan runs 12 here, 16 by partners and buys 39.
Machines here: assembly bench, cnc lathe, cnc wire bender, coil winder, tube bender. Partner capabilities wanted: die casting, injection moulding, lamination stamping, metal stamping. Standard chains use typical published yields and loadings, rounded; none is measured on a line this network runs.