Difference between revisions of "Reflow Oven"

From RevSpace
Jump to: navigation, search
m (link fix!)
(7 intermediate revisions by the same user not shown)
Line 1: Line 1:
Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, [[User:Smeding|smeding]] has decided we need a reflow oven.
+
Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.
  
== Donators ==
+
== Status ==
The current direction the project seems to be going (buying a new oven and modding it) we are going to need a little more funds than I can provide on my own. 100 EUR should be more than enough to cover everything, to give an idea of the funds needed. Better budget will come when decisions and designs are finalised.
+
Oven has been acquired. It is a cheap 1kW Everglades toaster oven. It remains to be seen if it is powerful enough to reflow in a sensible amount of time.
 
+
First components for the controller have been ordered.
== Oven ==
+
Haven't hunted around that much, but current best choice seems to be [http://www.block.nl/article/getArticleDetails?artNr=83550 this]. Feel free to add suggestions.
+
 
+
We probably want the following from an oven:
+
* Small volume: 15L-ish
+
* High power: 2kW-ish, preferrably top and bottom elements
+
* With exhaust fan if possible, as we'd need one anyway
+
  
 
== Controller ==
 
== Controller ==
 
To be constructed. Will probably consist of a large triac to switch the heating element and a fan on and off in a control loop with a thermocouple.
 
To be constructed. Will probably consist of a large triac to switch the heating element and a fan on and off in a control loop with a thermocouple.
 
We still need a decent fan to speed up the cooling phase. Needs to be able to withstand rather high temperatures, something from an oven would be ideal.
 
We still need a decent fan to speed up the cooling phase. Needs to be able to withstand rather high temperatures, something from an oven would be ideal.
 +
 +
{|
 +
|+ Preliminary parts spec
 +
|-
 +
 +
! Farnell order no. !! Type number !! Description !! Cost
 +
|-
 +
 +
| [http://nl.farnell.com/texas-instruments/ads1118idgsr/adc-16bit-temp-sensor-10msop/dp/1947871 1947871] || ADS1118 || thermocouple amplifier, ADC and reference || € 5.21
 +
|-
 +
 +
| [http://nl.farnell.com/_/sonde890/probe-thermocouple-k/dp/4283831 4283831] || SONDE890 || Type K thermocouple itself ||  € 4.76
 +
|-
 +
 +
| [http://nl.farnell.com/labfacility/im-k-lcf/socket-mini-single-sprung-type/dp/8598282 8598282] || - || Type K thermocouple connector
 +
|-
 +
 +
| - || - || 16x2 LCD display || around €3
 +
|-
 +
 +
| [http://nl.farnell.com/stmicroelectronics/bta41-600brg/triac-40a-600v-top-3/dp/1057288 1057288] || BTA41-600BRG || Beefy TRIAC for heater switching || € 4.66
 +
|-
 +
 +
| [http://nl.farnell.com/isocom/is620x/optocoupler-dip-6-triac-o-p/dp/1683241 1683241] || IS620X || optocoupler triac driver || € 0.49
 +
 +
|}

Revision as of 19:27, 27 November 2011

Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.

Status

Oven has been acquired. It is a cheap 1kW Everglades toaster oven. It remains to be seen if it is powerful enough to reflow in a sensible amount of time. First components for the controller have been ordered.

Controller

To be constructed. Will probably consist of a large triac to switch the heating element and a fan on and off in a control loop with a thermocouple. We still need a decent fan to speed up the cooling phase. Needs to be able to withstand rather high temperatures, something from an oven would be ideal.

Preliminary parts spec
Farnell order no. Type number Description Cost
1947871 ADS1118 thermocouple amplifier, ADC and reference € 5.21
4283831 SONDE890 Type K thermocouple itself € 4.76
8598282 - Type K thermocouple connector
- - 16x2 LCD display around €3
1057288 BTA41-600BRG Beefy TRIAC for heater switching € 4.66
1683241 IS620X optocoupler triac driver € 0.49