InductionHeater: Difference between revisions
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m (Typo in the link to Smeding's BOM) |
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|Pump | |Pump | ||
| | |€20 | ||
|Possibly a pump from a domestic heater (CV). | |Possibly a pump from a domestic heater (CV). Buy for around €20 on Marktplaats | ||
|Have to check whether or not normal sizes create sufficient flow through small diameter coil tubing | |Have to check whether or not normal sizes create sufficient flow through small diameter coil tubing | ||
|- | |- | ||
|Electrical connections and wiring | |Electrical connections and wiring | ||
|€ | |€ 20 | ||
|Battery connections form scrapped cars? | |Battery connections form scrapped cars? | ||
|How much current do we expect, and how long do the wires have to be? how do we connect these to the coil tubing (Earth blocks? | |How much current do we expect, and how long do the wires have to be? how do we connect these to the coil tubing (Earth blocks? | ||
|- | |||
|Tubes and other cooling connectors | |||
|15€ | |||
| | |||
| | |||
|- | |- | ||
|... | |... | ||
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|- | |- | ||
|'''Total cost''' | |'''Total cost''' | ||
|€ | |€ 85 (incomplete) | ||
|} | |||
==Total cost== | |||
{|class="wikitable" | |||
! | |||
!cost | |||
|- | |||
|Inverter | |||
|€160 | |||
|- | |||
|Hardware | |||
|€85 | |||
|- | |||
|'''Total''' | |||
|€245 | |||
|} | |} | ||
Now we need financing. | Now we need financing. The current total is '''€245''', and that isn't complete so far (although it may get close) | ||
Pledges: | Pledges: | ||
Revision as of 11:36, 5 September 2014
| Project InductionHeater | |
|---|---|
| Status | Initializing |
| Contact | smeding, gori |
| Last Update | 2014-09-05 |
Idea is to make a 3kW induction spool to smelt metals and heat steel for forging. For examples see :
Inverter circuit
Smeding had designed a circuit and made a BOM, see below:
| Component | cost |
|---|---|
| Bridge rectifier | €2.56 |
| switching transistor | €22.92 |
| Tank capacitors | 20.50 |
| DC link filter capacitor | €23.14 |
| Gate driver | €7.06 |
| Couple transformer Toroid | €20 (est.) |
| Gate drive transormer toroid | €3 |
| Estimate for components killed (see below) | €60 |
| Total | €160 |
Based on Smedings estimate Obviously, some parts may die a gruesome death during construction and testing. Worst case estimate is that the switching transistor and the driver will die twice, adding an amount of €60 to the BOM before we have a working machine.
Additional hardware
In addition to the inverter circuit, at least the following things are needed to make a working induction heater
| Component | cost | Possible sources | requirements |
|---|---|---|---|
| Coil | € 15 ? | Gas tubing, car brake tubing | Copper. Sufficient copper area to handle the current. Sufficient inner area + diameter to allow for effective cooling |
| heat exchanger | €15 ? | Car junkyard | Unsure how much heat needs to be removed and at what temperatures. Worst Case would be 3 kW. A car radiator is probably good (cheap, sufficient power and an integrated fan) |
| Pump | €20 | Possibly a pump from a domestic heater (CV). Buy for around €20 on Marktplaats | Have to check whether or not normal sizes create sufficient flow through small diameter coil tubing |
| Electrical connections and wiring | € 20 | Battery connections form scrapped cars? | How much current do we expect, and how long do the wires have to be? how do we connect these to the coil tubing (Earth blocks? |
| Tubes and other cooling connectors | 15€ | ||
| ... | |||
| Total cost | € 85 (incomplete) |
Total cost
| cost | |
|---|---|
| Inverter | €160 |
| Hardware | €85 |
| Total | €245 |
Now we need financing. The current total is €245, and that isn't complete so far (although it may get close)
Pledges: